1b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch// Copyright 2010 the V8 project authors. All rights reserved. 2b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch// found in the LICENSE file. 4b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 5b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#ifdef ENABLE_GDB_JIT_INTERFACE 6b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/v8.h" 7b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 8b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/base/bits.h" 9b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/base/platform/platform.h" 10b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/bootstrapper.h" 11b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/compiler.h" 12b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/frames-inl.h" 13b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/frames.h" 14b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/gdb-jit.h" 15b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/global-handles.h" 16b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/messages.h" 17b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/natives.h" 18b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/ostreams.h" 19b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#include "src/scopes.h" 20b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 21b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochnamespace v8 { 22b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochnamespace internal { 23b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef __APPLE__ 253fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#define __MACH_O 263fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass MachO; 273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass MachOSection; 283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochtypedef MachO DebugObject; 293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochtypedef MachOSection DebugSection; 303fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#define __ELF 32b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass ELF; 333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass ELFSection; 343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochtypedef ELF DebugObject; 353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochtypedef ELFSection DebugSection; 363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 37b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 38b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass Writer BASE_EMBEDDED { 39b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch explicit Writer(DebugObject* debug_object) 413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : debug_object_(debug_object), 42b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch position_(0), 43b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch capacity_(1024), 44b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch buffer_(reinterpret_cast<byte*>(malloc(capacity_))) { 45b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 46b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 47b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ~Writer() { 48b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch free(buffer_); 49b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 50b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 51b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t position() const { 52b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return position_; 53b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 54b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 55b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 56b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch class Slot { 57b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 58b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Slot(Writer* w, uintptr_t offset) : w_(w), offset_(offset) { } 59b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 60b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch T* operator-> () { 61b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return w_->RawSlotAt<T>(offset_); 62b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 63b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 64b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void set(const T& value) { 65b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch *w_->RawSlotAt<T>(offset_) = value; 66b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 67b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 68b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Slot<T> at(int i) { 69b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return Slot<T>(w_, offset_ + sizeof(T) * i); 70b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 71b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 72b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 73b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer* w_; 74b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t offset_; 75b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 76b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 77b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 78b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void Write(const T& val) { 79b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Ensure(position_ + sizeof(T)); 80b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch *RawSlotAt<T>(position_) = val; 81b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch position_ += sizeof(T); 82b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 83b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 84b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 85b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Slot<T> SlotAt(uintptr_t offset) { 86b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Ensure(offset + sizeof(T)); 87b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return Slot<T>(this, offset); 88b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 89b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 90b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 91b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Slot<T> CreateSlotHere() { 92b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return CreateSlotsHere<T>(1); 93b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 94b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 95b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 96b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Slot<T> CreateSlotsHere(uint32_t count) { 97b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t slot_position = position_; 98b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch position_ += sizeof(T) * count; 99b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Ensure(position_); 100b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return SlotAt<T>(slot_position); 101b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 102b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 103b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void Ensure(uintptr_t pos) { 104b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (capacity_ < pos) { 105b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch while (capacity_ < pos) capacity_ *= 2; 106b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch buffer_ = reinterpret_cast<byte*>(realloc(buffer_, capacity_)); 107b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 108b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 109b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1103fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DebugObject* debug_object() { return debug_object_; } 111b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 112b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch byte* buffer() { return buffer_; } 113b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 114b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void Align(uintptr_t align) { 115b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t delta = position_ % align; 116b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (delta == 0) return; 117b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t padding = align - delta; 118b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Ensure(position_ += padding); 119b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK((position_ % align) == 0); 120b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 121b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 122b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteULEB128(uintptr_t value) { 123b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch do { 124b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t byte = value & 0x7F; 125b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch value >>= 7; 126b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (value != 0) byte |= 0x80; 127b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Write<uint8_t>(byte); 128b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } while (value != 0); 129b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 130b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 131b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteSLEB128(intptr_t value) { 132b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch bool more = true; 133b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch while (more) { 134b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int8_t byte = value & 0x7F; 135b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch bool byte_sign = byte & 0x40; 136b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch value >>= 7; 137b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 138b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if ((value == 0 && !byte_sign) || (value == -1 && byte_sign)) { 139b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch more = false; 140b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 141b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch byte |= 0x80; 142b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 143b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 144b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Write<int8_t>(byte); 145b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 146b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 147b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 148b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteString(const char* str) { 149b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch do { 150b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Write<char>(*str); 151b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } while (*str++); 152b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 153b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 154b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 155b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> friend class Slot; 156b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 157b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch template<typename T> 158b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch T* RawSlotAt(uintptr_t offset) { 159b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(offset < capacity_ && offset + sizeof(T) <= capacity_); 160b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return reinterpret_cast<T*>(&buffer_[offset]); 161b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 162b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DebugObject* debug_object_; 164b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t position_; 165b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t capacity_; 166b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch byte* buffer_; 167b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 168b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 169b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochclass ELFStringTable; 170b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochtemplate<typename THeader> 1723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass DebugSectionBase : public ZoneObject { 173b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 1743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch virtual ~DebugSectionBase() { } 1753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch virtual void WriteBody(Writer::Slot<THeader> header, Writer* writer) { 1773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t start = writer->position(); 178b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (WriteBodyInternal(writer)) { 1793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t end = writer->position(); 1803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->offset = start; 1813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__MACH_O) 1823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->addr = 0; 1833fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 1843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->size = end - start; 1853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 1863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 1873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 188b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch virtual bool WriteBodyInternal(Writer* writer) { 1893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return false; 1903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 1913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch typedef THeader Header; 1933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 1943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochstruct MachOSectionHeader { 1973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch char sectname[16]; 1983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch char segname[16]; 199b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 2003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t addr; 2013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t size; 2023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 2033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t addr; 2043fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t size; 2053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 2063fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t offset; 2073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t align; 2083fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t reloff; 2093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t nreloc; 2103fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t flags; 2113fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t reserved1; 2123fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t reserved2; 2133fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 2143fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2153fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2163fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass MachOSection : public DebugSectionBase<MachOSectionHeader> { 2173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch public: 2183fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch enum Type { 2193fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch S_REGULAR = 0x0u, 2203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch S_ATTR_COALESCED = 0xbu, 2213fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch S_ATTR_SOME_INSTRUCTIONS = 0x400u, 2223fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch S_ATTR_DEBUG = 0x02000000u, 2233fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch S_ATTR_PURE_INSTRUCTIONS = 0x80000000u 224b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 225b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 226b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch MachOSection(const char* name, const char* segment, uint32_t align, 2273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t flags) 228b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch : name_(name), segment_(segment), align_(align), flags_(flags) { 2293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (align_ != 0) { 230b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(base::bits::IsPowerOfTwo32(align)); 2313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch align_ = WhichPowerOf2(align_); 2323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 2333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 2343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch virtual ~MachOSection() { } 2363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2373fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch virtual void PopulateHeader(Writer::Slot<Header> header) { 2383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->addr = 0; 2393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->size = 0; 2403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->offset = 0; 2413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->align = align_; 2423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->reloff = 0; 2433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->nreloc = 0; 2443fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->flags = flags_; 2453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->reserved1 = 0; 2463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->reserved2 = 0; 2473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch memset(header->sectname, 0, sizeof(header->sectname)); 2483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch memset(header->segname, 0, sizeof(header->segname)); 249b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(strlen(name_) < sizeof(header->sectname)); 250b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(strlen(segment_) < sizeof(header->segname)); 2513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch strncpy(header->sectname, name_, sizeof(header->sectname)); 2523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch strncpy(header->segname, segment_, sizeof(header->segname)); 2533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 2543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2553fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch private: 2563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch const char* name_; 2573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch const char* segment_; 258b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch uint32_t align_; 2593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t flags_; 2603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 2613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochstruct ELFSectionHeader { 2643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t name; 2653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t type; 2663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t flags; 2673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t address; 2683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t offset; 2693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t size; 2703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t link; 2713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t info; 2723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t alignment; 2733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t entry_size; 2743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 2753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 2773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__ELF) 2783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass ELFSection : public DebugSectionBase<ELFSectionHeader> { 2793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch public: 280b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum Type { 281b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_NULL = 0, 282b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_PROGBITS = 1, 283b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_SYMTAB = 2, 284b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_STRTAB = 3, 285b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_RELA = 4, 286b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_HASH = 5, 287b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_DYNAMIC = 6, 288b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_NOTE = 7, 289b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_NOBITS = 8, 290b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_REL = 9, 291b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_SHLIB = 10, 292b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_DYNSYM = 11, 293b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_LOPROC = 0x70000000, 2941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block TYPE_X86_64_UNWIND = 0x70000001, 295b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_HIPROC = 0x7fffffff, 296b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_LOUSER = 0x80000000, 297b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_HIUSER = 0xffffffff 298b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 299b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 300b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum Flags { 301b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch FLAG_WRITE = 1, 302b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch FLAG_ALLOC = 2, 303b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch FLAG_EXEC = 4 304b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 305b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 306b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum SpecialIndexes { 307b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch INDEX_ABSOLUTE = 0xfff1 308b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 309b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 310b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSection(const char* name, Type type, uintptr_t align) 311b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : name_(name), type_(type), align_(align) { } 312b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 313b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual ~ELFSection() { } 314b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 315b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void PopulateHeader(Writer::Slot<Header> header, ELFStringTable* strtab); 316b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 317b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void WriteBody(Writer::Slot<Header> header, Writer* w) { 318b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t start = w->position(); 319b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (WriteBodyInternal(w)) { 320b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t end = w->position(); 321b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->offset = start; 322b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->size = end - start; 323b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 324b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 325b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 326b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch virtual bool WriteBodyInternal(Writer* w) { 327b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return false; 328b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 329b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 330b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t index() const { return index_; } 331b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void set_index(uint16_t index) { index_ = index; } 332b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 333b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch protected: 334b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void PopulateHeader(Writer::Slot<Header> header) { 335b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->flags = 0; 336b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->address = 0; 337b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->offset = 0; 338b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->size = 0; 339b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->link = 0; 340b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->info = 0; 341b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->entry_size = 0; 342b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 343b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 344b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 345b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const char* name_; 346b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Type type_; 347b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t align_; 348b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t index_; 349b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 3503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__ELF) 351b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 352b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 3533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__MACH_O) 3543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass MachOTextSection : public MachOSection { 3553fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch public: 3563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOTextSection(uintptr_t align, 3573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t addr, 3583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t size) 3593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : MachOSection("__text", 3603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch "__TEXT", 3613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch align, 3623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_REGULAR | 3633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_ATTR_SOME_INSTRUCTIONS | 3643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_ATTR_PURE_INSTRUCTIONS), 3653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch addr_(addr), 3663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch size_(size) { } 3673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 3683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch protected: 3693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch virtual void PopulateHeader(Writer::Slot<Header> header) { 3703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::PopulateHeader(header); 3713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->addr = addr_; 3723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->size = size_; 3733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 3743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 3753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch private: 3763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t addr_; 3773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t size_; 3783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 3793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__MACH_O) 3803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 3813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 3823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__ELF) 383b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass FullHeaderELFSection : public ELFSection { 384b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 385b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch FullHeaderELFSection(const char* name, 386b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Type type, 387b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t align, 388b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t addr, 389b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t offset, 390b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size, 391b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t flags) 392b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : ELFSection(name, type, align), 393b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch addr_(addr), 394b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch offset_(offset), 395b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size_(size), 396b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch flags_(flags) { } 397b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 398b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch protected: 399b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void PopulateHeader(Writer::Slot<Header> header) { 400b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSection::PopulateHeader(header); 401b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->address = addr_; 402b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->offset = offset_; 403b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->size = size_; 404b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->flags = flags_; 405b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 406b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 407b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 408b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t addr_; 409b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t offset_; 410b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size_; 411b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t flags_; 412b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 413b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 414b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 415b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochclass ELFStringTable : public ELFSection { 416b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 417b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch explicit ELFStringTable(const char* name) 418b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : ELFSection(name, TYPE_STRTAB, 1), writer_(NULL), offset_(0), size_(0) { 419b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 420b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 421b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t Add(const char* str) { 422b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (*str == '\0') return 0; 423b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 424b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t offset = size_; 425b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteString(str); 426b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return offset; 427b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 428b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 429b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void AttachWriter(Writer* w) { 430b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch writer_ = w; 431b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch offset_ = writer_->position(); 432b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 433b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // First entry in the string table should be an empty string. 434b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteString(""); 435b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 436b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 437b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void DetachWriter() { 438b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch writer_ = NULL; 439b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 440b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 441b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void WriteBody(Writer::Slot<Header> header, Writer* w) { 442b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(writer_ == NULL); 443b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->offset = offset_; 444b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->size = size_; 445b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 446b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 447b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 448b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteString(const char* str) { 449b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t written = 0; 450b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch do { 451b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch writer_->Write(*str); 452b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch written++; 453b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } while (*str++); 454b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size_ += written; 455b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 456b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 457b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer* writer_; 458b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 459b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t offset_; 460b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size_; 461b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 462b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 463b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 464b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid ELFSection::PopulateHeader(Writer::Slot<ELFSection::Header> header, 465b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFStringTable* strtab) { 466b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->name = strtab->Add(name_); 467b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->type = type_; 468b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->alignment = align_; 469b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch PopulateHeader(header); 470b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 4713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__ELF) 4723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 4733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 4743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__MACH_O) 4753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass MachO BASE_EMBEDDED { 4763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch public: 477b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch explicit MachO(Zone* zone) : zone_(zone), sections_(6, zone) { } 4783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 4793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t AddSection(MachOSection* section) { 480b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch sections_.Add(section, zone_); 4813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return sections_.length() - 1; 4823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 4833fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 4843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch void Write(Writer* w, uintptr_t code_start, uintptr_t code_size) { 4853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOHeader> header = WriteHeader(w); 4863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t load_command_start = w->position(); 4873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOSegmentCommand> cmd = WriteSegmentCommand(w, 4883fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch code_start, 4893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch code_size); 4903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteSections(w, cmd, header, load_command_start); 4913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 4923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 4933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch private: 4943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch struct MachOHeader { 4953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t magic; 4963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t cputype; 4973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t cpusubtype; 4983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t filetype; 4993fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t ncmds; 5003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t sizeofcmds; 5013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t flags; 502b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 5033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t reserved; 5043fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 5053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch }; 5063fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch struct MachOSegmentCommand { 5083fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t cmd; 5093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t cmdsize; 5103fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch char segname[16]; 511b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 5123fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t vmaddr; 5133fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t vmsize; 5143fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t fileoff; 5153fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t filesize; 5163fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 5173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t vmaddr; 5183fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t vmsize; 5193fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t fileoff; 5203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint64_t filesize; 5213fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 5223fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t maxprot; 5233fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t initprot; 5243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t nsects; 5253fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t flags; 5263fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch }; 5273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch enum MachOLoadCommandCmd { 5293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch LC_SEGMENT_32 = 0x00000001u, 5303fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch LC_SEGMENT_64 = 0x00000019u 5313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch }; 5323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOHeader> WriteHeader(Writer* w) { 535b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(w->position() == 0); 5363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOHeader> header = w->CreateSlotHere<MachOHeader>(); 537b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 5383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->magic = 0xFEEDFACEu; 5393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->cputype = 7; // i386 5403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->cpusubtype = 3; // CPU_SUBTYPE_I386_ALL 541b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_X64 5423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->magic = 0xFEEDFACFu; 5433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->cputype = 7 | 0x01000000; // i386 | 64-bit ABI 5443fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->cpusubtype = 3; // CPU_SUBTYPE_I386_ALL 5453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->reserved = 0; 5463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 5473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#error Unsupported target architecture. 5483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 5493fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->filetype = 0x1; // MH_OBJECT 5503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->ncmds = 1; 5513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->sizeofcmds = 0; 5523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->flags = 0; 5533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return header; 5543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 555b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 556b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 5573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOSegmentCommand> WriteSegmentCommand(Writer* w, 5583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t code_start, 5593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t code_size) { 5603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOSegmentCommand> cmd = 5613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->CreateSlotHere<MachOSegmentCommand>(); 562b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 5633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->cmd = LC_SEGMENT_32; 5643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 5653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->cmd = LC_SEGMENT_64; 5663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 5673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->vmaddr = code_start; 5683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->vmsize = code_size; 5693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->fileoff = 0; 5703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->filesize = 0; 5713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->maxprot = 7; 5723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->initprot = 7; 5733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->flags = 0; 5743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->nsects = sections_.length(); 5753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch memset(cmd->segname, 0, 16); 5763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->cmdsize = sizeof(MachOSegmentCommand) + sizeof(MachOSection::Header) * 5773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->nsects; 5783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return cmd; 5793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 5803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 5823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch void WriteSections(Writer* w, 5833fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOSegmentCommand> cmd, 5843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOHeader> header, 5853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t load_command_start) { 5863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<MachOSection::Header> headers = 5873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->CreateSlotsHere<MachOSection::Header>(sections_.length()); 5883fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->fileoff = w->position(); 5893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch header->sizeofcmds = w->position() - load_command_start; 5903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int section = 0; section < sections_.length(); ++section) { 5913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch sections_[section]->PopulateHeader(headers.at(section)); 5923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch sections_[section]->WriteBody(headers.at(section), w); 5933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 5943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch cmd->filesize = w->position() - (uintptr_t)cmd->fileoff; 5953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 5963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 597b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone* zone_; 5983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch ZoneList<MachOSection*> sections_; 5993fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch}; 6003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__MACH_O) 6013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 6023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 6033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__ELF) 604b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass ELF BASE_EMBEDDED { 605b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 606b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch explicit ELF(Zone* zone) : zone_(zone), sections_(6, zone) { 607b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch sections_.Add(new(zone) ELFSection("", ELFSection::TYPE_NULL, 0), zone); 608b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch sections_.Add(new(zone) ELFStringTable(".shstrtab"), zone); 609b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 610b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 611b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void Write(Writer* w) { 612b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteHeader(w); 613b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteSectionTable(w); 614b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteSections(w); 615b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 616b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 617b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSection* SectionAt(uint32_t index) { 618b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return sections_[index]; 619b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 620b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 621b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t AddSection(ELFSection* section) { 622b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch sections_.Add(section, zone_); 623b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch section->set_index(sections_.length() - 1); 624b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return sections_.length() - 1; 625b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 626b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 627b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 628b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch struct ELFHeader { 629b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t ident[16]; 630b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t type; 631b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t machine; 632b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t version; 633b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t entry; 634b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t pht_offset; 635b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t sht_offset; 636b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t flags; 637b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t header_size; 638b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t pht_entry_size; 639b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t pht_entry_num; 640b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t sht_entry_size; 641b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t sht_entry_num; 642b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t sht_strtab_index; 643b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 644b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 645b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 646b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteHeader(Writer* w) { 647b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(w->position() == 0); 648b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<ELFHeader> header = w->CreateSlotHere<ELFHeader>(); 649b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if (V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X87 || \ 650b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT)) 651b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const uint8_t ident[16] = 652b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch { 0x7f, 'E', 'L', 'F', 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 653b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_64_BIT 654b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const uint8_t ident[16] = 655b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch { 0x7f, 'E', 'L', 'F', 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 656b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#else 657b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#error Unsupported target architecture. 658b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#endif 659b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch memcpy(header->ident, ident, 16); 660b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->type = 1; 661b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 662b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->machine = 3; 663b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_X64 664b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Processor identification value for x64 is 62 as defined in 665b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // System V ABI, AMD64 Supplement 666b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // http://www.x86-64.org/documentation/abi.pdf 667b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->machine = 62; 668b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_ARM 669e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Set to EM_ARM, defined as 40, in "ARM ELF File Format" at 670e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // infocenter.arm.com/help/topic/com.arm.doc.dui0101a/DUI0101A_Elf.pdf 671e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch header->machine = 40; 672b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#else 673b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#error Unsupported target architecture. 674b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#endif 675b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->version = 1; 676b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->entry = 0; 677b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->pht_offset = 0; 678b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->sht_offset = sizeof(ELFHeader); // Section table follows header. 679b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->flags = 0; 680b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->header_size = sizeof(ELFHeader); 681b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->pht_entry_size = 0; 682b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->pht_entry_num = 0; 683b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->sht_entry_size = sizeof(ELFSection::Header); 684b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->sht_entry_num = sections_.length(); 685b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->sht_strtab_index = 1; 686b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 687b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 688b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteSectionTable(Writer* w) { 689b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Section headers table immediately follows file header. 690b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(w->position() == sizeof(ELFHeader)); 691b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 692b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<ELFSection::Header> headers = 693b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->CreateSlotsHere<ELFSection::Header>(sections_.length()); 694b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 695b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // String table for section table is the first section. 696b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFStringTable* strtab = static_cast<ELFStringTable*>(SectionAt(1)); 697b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch strtab->AttachWriter(w); 698b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch for (int i = 0, length = sections_.length(); 699b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i < length; 700b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i++) { 701b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch sections_[i]->PopulateHeader(headers.at(i), strtab); 702b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 703b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch strtab->DetachWriter(); 704b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 705b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 706b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int SectionHeaderPosition(uint32_t section_index) { 707b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return sizeof(ELFHeader) + sizeof(ELFSection::Header) * section_index; 708b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 709b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 710b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteSections(Writer* w) { 711b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<ELFSection::Header> headers = 712b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->SlotAt<ELFSection::Header>(sizeof(ELFHeader)); 713b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 714b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch for (int i = 0, length = sections_.length(); 715b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i < length; 716b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i++) { 717b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch sections_[i]->WriteBody(headers.at(i), w); 718b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 719b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 720b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 721b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone* zone_; 722b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ZoneList<ELFSection*> sections_; 723b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 724b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 725b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 726b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass ELFSymbol BASE_EMBEDDED { 727b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 728b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum Type { 729b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_NOTYPE = 0, 730b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_OBJECT = 1, 731b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_FUNC = 2, 732b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_SECTION = 3, 733b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_FILE = 4, 734b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_LOPROC = 13, 735b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch TYPE_HIPROC = 15 736b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 737b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 738b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum Binding { 739b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch BIND_LOCAL = 0, 740b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch BIND_GLOBAL = 1, 741b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch BIND_WEAK = 2, 742b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch BIND_LOPROC = 13, 743b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch BIND_HIPROC = 15 744b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 745b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 746b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol(const char* name, 747b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value, 748b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size, 749b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Binding binding, 750b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Type type, 751b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section) 752b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : name(name), 753b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch value(value), 754b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size(size), 755b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch info((binding << 4) | type), 756b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch other(0), 757b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch section(section) { 758b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 759b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 760b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Binding binding() const { 761b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return static_cast<Binding>(info >> 4); 762b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 763b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if (V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X87 || \ 764b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT)) 765b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch struct SerializedLayout { 766b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch SerializedLayout(uint32_t name, 767b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value, 768b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size, 769b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Binding binding, 770b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Type type, 771b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section) 772b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : name(name), 773b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch value(value), 774b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size(size), 775b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch info((binding << 4) | type), 776b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch other(0), 777b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch section(section) { 778b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 779b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 780b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t name; 781b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value; 782b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size; 783b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t info; 784b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t other; 785b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section; 786b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 787b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_64_BIT 788b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch struct SerializedLayout { 789b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch SerializedLayout(uint32_t name, 790b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value, 791b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size, 792b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Binding binding, 793b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Type type, 794b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section) 795b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : name(name), 796b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch info((binding << 4) | type), 797b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch other(0), 798b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch section(section), 799b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch value(value), 800b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size(size) { 801b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 802b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 803b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t name; 804b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t info; 805b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t other; 806b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section; 807b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value; 808b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size; 809b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 810b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#endif 811b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 812b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void Write(Writer::Slot<SerializedLayout> s, ELFStringTable* t) { 813b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Convert symbol names from strings to indexes in the string table. 814b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->name = t->Add(name); 815b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->value = value; 816b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->size = size; 817b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->info = info; 818b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->other = other; 819b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch s->section = section; 820b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 821b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 822b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 823b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const char* name; 824b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t value; 825b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t size; 826b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t info; 827b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint8_t other; 828b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint16_t section; 829b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 830b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 831b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 832b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass ELFSymbolTable : public ELFSection { 833b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 834b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFSymbolTable(const char* name, Zone* zone) 835b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : ELFSection(name, TYPE_SYMTAB, sizeof(uintptr_t)), 836b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch locals_(1, zone), 837b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch globals_(1, zone) { 838b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 839b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 840b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void WriteBody(Writer::Slot<Header> header, Writer* w) { 841b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Align(header->alignment); 842b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int total_symbols = locals_.length() + globals_.length() + 1; 843b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->offset = w->position(); 844b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 845b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<ELFSymbol::SerializedLayout> symbols = 846b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->CreateSlotsHere<ELFSymbol::SerializedLayout>(total_symbols); 847b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 848b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->size = w->position() - header->offset; 849b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 850b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // String table for this symbol table should follow it in the section table. 851b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFStringTable* strtab = 852b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch static_cast<ELFStringTable*>(w->debug_object()->SectionAt(index() + 1)); 853b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch strtab->AttachWriter(w); 854b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch symbols.at(0).set(ELFSymbol::SerializedLayout(0, 855b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0, 856b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0, 857b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::BIND_LOCAL, 858b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::TYPE_NOTYPE, 859b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0)); 860b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteSymbolsList(&locals_, symbols.at(1), strtab); 861b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteSymbolsList(&globals_, symbols.at(locals_.length() + 1), strtab); 862b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch strtab->DetachWriter(); 863b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 864b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 865b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void Add(const ELFSymbol& symbol, Zone* zone) { 866b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (symbol.binding() == ELFSymbol::BIND_LOCAL) { 867b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch locals_.Add(symbol, zone); 868b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 869b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch globals_.Add(symbol, zone); 870b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 871b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 872b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 873b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch protected: 874b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch virtual void PopulateHeader(Writer::Slot<Header> header) { 875b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSection::PopulateHeader(header); 876b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // We are assuming that string table will follow symbol table. 877b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->link = index() + 1; 878b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->info = locals_.length() + 1; 879b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch header->entry_size = sizeof(ELFSymbol::SerializedLayout); 880b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 881b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 882b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 883b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteSymbolsList(const ZoneList<ELFSymbol>* src, 884b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<ELFSymbol::SerializedLayout> dst, 885b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFStringTable* strtab) { 886b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch for (int i = 0, len = src->length(); 887b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i < len; 888b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch i++) { 889b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch src->at(i).Write(dst.at(i), strtab); 890b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 891b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 892b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 893b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ZoneList<ELFSymbol> locals_; 894b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ZoneList<ELFSymbol> globals_; 895b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 8963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__ELF) 897b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 898b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 899b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochclass LineInfo : public Malloced { 900b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch public: 901b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo() : pc_info_(10) {} 902b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 903b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void SetPosition(intptr_t pc, int pos, bool is_statement) { 904b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch AddPCInfo(PCInfo(pc, pos, is_statement)); 905b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 906b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 907b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch struct PCInfo { 908b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch PCInfo(intptr_t pc, int pos, bool is_statement) 909b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch : pc_(pc), pos_(pos), is_statement_(is_statement) {} 910b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 911b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch intptr_t pc_; 912b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int pos_; 913b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch bool is_statement_; 914b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch }; 915b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 916b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch List<PCInfo>* pc_info() { return &pc_info_; } 917b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 918b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch private: 919b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void AddPCInfo(const PCInfo& pc_info) { pc_info_.Add(pc_info); } 920b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 921b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch List<PCInfo> pc_info_; 922b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch}; 923b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 924b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 925b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochclass CodeDescription BASE_EMBEDDED { 926b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 927b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 9281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block enum StackState { 9291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block POST_RBP_PUSH, 9301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block POST_RBP_SET, 9311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block POST_RBP_POP, 9321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block STACK_STATE_MAX 9331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block }; 9341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif 9351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 936b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch CodeDescription(const char* name, Code* code, Handle<Script> script, 937b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* lineinfo, GDBJITInterface::CodeTag tag, 9383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompilationInfo* info) 9391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block : name_(name), 9401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block code_(code), 9411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block script_(script), 9421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block lineinfo_(lineinfo), 9433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch tag_(tag), 944b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch info_(info) {} 945b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 9461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block const char* name() const { 947b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return name_; 948b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 949b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 950b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* lineinfo() const { return lineinfo_; } 9511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 9521e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block GDBJITInterface::CodeTag tag() const { 9531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return tag_; 9541e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 9551e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 9563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompilationInfo* info() const { 9573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return info_; 9583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 9593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 9603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool IsInfoAvailable() const { 9613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch return info_ != NULL; 9623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 9633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 9641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t CodeStart() const { 9651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return reinterpret_cast<uintptr_t>(code_->instruction_start()); 966b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 967b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 9681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t CodeEnd() const { 9691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return reinterpret_cast<uintptr_t>(code_->instruction_end()); 970b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 971b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 9721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t CodeSize() const { 9731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return CodeEnd() - CodeStart(); 9741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 9751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 9761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block bool IsLineInfoAvailable() { 977b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return !script_.is_null() && 978b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch script_->source()->IsString() && 979b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch script_->HasValidSource() && 980b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch script_->name()->IsString() && 981b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch lineinfo_ != NULL; 982b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 983b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 984b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 9851e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t GetStackStateStartAddress(StackState state) const { 986b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(state < STACK_STATE_MAX); 9871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return stack_state_start_addresses_[state]; 9881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 989b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 9901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block void SetStackStateStartAddress(StackState state, uintptr_t addr) { 991b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(state < STACK_STATE_MAX); 9921e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block stack_state_start_addresses_[state] = addr; 9931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 9941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif 9951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 996589d6979ff2ef66fca2d8fa51404c369ca5e9250Ben Murdoch SmartArrayPointer<char> GetFilename() { 997b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return String::cast(script_->name())->ToCString(); 998b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 999b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1000b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int GetScriptLineNumber(int pos) { 1001b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return script_->GetLineNumber(pos) + 1; 1002b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1003b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 10041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1005b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 1006b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch const char* name_; 1007b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code* code_; 1008b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Handle<Script> script_; 1009b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* lineinfo_; 10101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block GDBJITInterface::CodeTag tag_; 10113fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompilationInfo* info_; 1012b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 10131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t stack_state_start_addresses_[STACK_STATE_MAX]; 10141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif 1015b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 1016b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 10173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__ELF) 1018b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic void CreateSymbolsTable(CodeDescription* desc, 1019b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone* zone, 1020b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELF* elf, 1021b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int text_section_index) { 1022b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFSymbolTable* symtab = new(zone) ELFSymbolTable(".symtab", zone); 1023b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFStringTable* strtab = new(zone) ELFStringTable(".strtab"); 1024b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1025b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Symbol table should be followed by the linked string table. 1026b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch elf->AddSection(symtab); 1027b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch elf->AddSection(strtab); 1028b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1029b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch symtab->Add(ELFSymbol("V8 Code", 1030b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0, 1031b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0, 1032b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::BIND_LOCAL, 1033b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::TYPE_FILE, 1034b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFSection::INDEX_ABSOLUTE), 1035b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch zone); 1036b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 10371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block symtab->Add(ELFSymbol(desc->name(), 1038b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 0, 10391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeSize(), 1040b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::BIND_GLOBAL, 1041b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch ELFSymbol::TYPE_FUNC, 1042b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch text_section_index), 1043b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch zone); 1044b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 10453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif // defined(__ELF) 1046b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1047b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 10483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass DebugInfoSection : public DebugSection { 1049b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 1050b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch explicit DebugInfoSection(CodeDescription* desc) 10513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#if defined(__ELF) 10523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : ELFSection(".debug_info", TYPE_PROGBITS, 1), 10533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 10543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : MachOSection("__debug_info", 10553fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch "__DWARF", 10563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1, 10573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_REGULAR | MachOSection::S_ATTR_DEBUG), 10583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 10593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch desc_(desc) { } 10603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 10613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // DWARF2 standard 10623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch enum DWARF2LocationOp { 10633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg0 = 0x50, 10643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg1 = 0x51, 10653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg2 = 0x52, 10663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg3 = 0x53, 10673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg4 = 0x54, 10683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg5 = 0x55, 10693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg6 = 0x56, 10703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_reg7 = 0x57, 10713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_OP_fbreg = 0x91 // 1 param: SLEB128 offset 10723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch }; 10733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 10743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch enum DWARF2Encoding { 10753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_ATE_ADDRESS = 0x1, 10763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_ATE_SIGNED = 0x5 10773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch }; 1078b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1079b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch bool WriteBodyInternal(Writer* w) { 10803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t cu_start = w->position(); 1081b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<uint32_t> size = w->CreateSlotHere<uint32_t>(); 1082b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t start = w->position(); 1083b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint16_t>(2); // DWARF version. 1084b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint32_t>(0); // Abbreviation table offset. 1085b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(sizeof(intptr_t)); 1086b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1087b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(1); // Abbreviation code. 1088b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->WriteString(desc_->GetFilename().get()); 10891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<intptr_t>(desc_->CodeStart()); 10901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<intptr_t>(desc_->CodeStart() + desc_->CodeSize()); 1091b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint32_t>(0); 10923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 10933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uint32_t ty_offset = static_cast<uint32_t>(w->position() - cu_start); 10943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(3); 10953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(kPointerSize); 10963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString("v8value"); 10973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 10983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (desc_->IsInfoAvailable()) { 1099b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Scope* scope = desc_->info()->scope(); 11003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(2); 11013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(desc_->name()); 11023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<intptr_t>(desc_->CodeStart()); 11033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<intptr_t>(desc_->CodeStart() + desc_->CodeSize()); 11043fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<uint32_t> fb_block_size = w->CreateSlotHere<uint32_t>(); 11053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t fb_block_start = w->position(); 1106b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87 11073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_reg5); // The frame pointer's here on ia32 1108b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_X64 11093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_reg6); // and here on x64. 1110b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_ARM 1111b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch UNIMPLEMENTED(); 1112b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_MIPS 1113b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch UNIMPLEMENTED(); 1114b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#elif V8_TARGET_ARCH_MIPS64 1115b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch UNIMPLEMENTED(); 11163fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 11173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#error Unsupported target architecture. 11183fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 11193fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch fb_block_size.set(static_cast<uint32_t>(w->position() - fb_block_start)); 11203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1121b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int params = scope->num_parameters(); 1122b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int slots = scope->num_stack_slots(); 1123b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int context_slots = scope->ContextLocalCount(); 11243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // The real slot ID is internal_slots + context_slot_id. 11253fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int internal_slots = Context::MIN_CONTEXT_SLOTS; 1126b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int locals = scope->StackLocalCount(); 11273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int current_abbreviation = 4; 11283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int param = 0; param < params; ++param) { 11303fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString( 1132b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch scope->parameter(param)->name()->ToCString(DISALLOW_NULLS).get()); 11333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint32_t>(ty_offset); 11343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<uint32_t> block_size = w->CreateSlotHere<uint32_t>(); 11353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t block_start = w->position(); 11363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_fbreg); 11373fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteSLEB128( 11383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch JavaScriptFrameConstants::kLastParameterOffset + 11393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch kPointerSize * (params - param - 1)); 11403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch block_size.set(static_cast<uint32_t>(w->position() - block_start)); 11413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 11423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch EmbeddedVector<char, 256> buffer; 11443fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch StringBuilder builder(buffer.start(), buffer.length()); 11453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int slot = 0; slot < slots; ++slot) { 11473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch builder.Reset(); 11493fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch builder.AddFormatted("slot%d", slot); 11503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(builder.Finalize()); 11513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 11523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // See contexts.h for more information. 1154b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(Context::MIN_CONTEXT_SLOTS == 4); 1155b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(Context::CLOSURE_INDEX == 0); 1156b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(Context::PREVIOUS_INDEX == 1); 1157b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(Context::EXTENSION_INDEX == 2); 1158b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(Context::GLOBAL_OBJECT_INDEX == 3); 11593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(".closure"); 11613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(".previous"); 11633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(".extension"); 11653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(".global"); 11673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int context_slot = 0; 11693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch context_slot < context_slots; 11703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch ++context_slot) { 11713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch builder.Reset(); 11733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch builder.AddFormatted("context_slot%d", context_slot + internal_slots); 11743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString(builder.Finalize()); 11753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 11763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1177b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ZoneList<Variable*> stack_locals(locals, scope->zone()); 1178b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ZoneList<Variable*> context_locals(context_slots, scope->zone()); 1179b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch scope->CollectStackAndContextLocals(&stack_locals, &context_locals); 11803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int local = 0; local < locals; ++local) { 11813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString( 1183b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch stack_locals[local]->name()->ToCString(DISALLOW_NULLS).get()); 11843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint32_t>(ty_offset); 11853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<uint32_t> block_size = w->CreateSlotHere<uint32_t>(); 11863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t block_start = w->position(); 11873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_fbreg); 11883fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteSLEB128( 11893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch JavaScriptFrameConstants::kLocal0Offset - 11903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch kPointerSize * local); 11913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch block_size.set(static_cast<uint32_t>(w->position() - block_start)); 11923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 11933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 11943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch { 11953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 11963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString("__function"); 11973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint32_t>(ty_offset); 11983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<uint32_t> block_size = w->CreateSlotHere<uint32_t>(); 11993fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t block_start = w->position(); 12003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_fbreg); 12013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteSLEB128(JavaScriptFrameConstants::kFunctionOffset); 12023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch block_size.set(static_cast<uint32_t>(w->position() - block_start)); 12033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 12043fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 12053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch { 12063fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 12073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteString("__context"); 12083fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint32_t>(ty_offset); 12093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer::Slot<uint32_t> block_size = w->CreateSlotHere<uint32_t>(); 12103fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch uintptr_t block_start = w->position(); 12113fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_OP_fbreg); 12123fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteSLEB128(StandardFrameConstants::kContextOffset); 12133fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch block_size.set(static_cast<uint32_t>(w->position() - block_start)); 12143fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 1215b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 1216b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->WriteULEB128(0); // Terminate the sub program. 12173fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 12183fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1219b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->WriteULEB128(0); // Terminate the compile unit. 1220b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size.set(static_cast<uint32_t>(w->position() - start)); 1221b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return true; 1222b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1223b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1224b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 1225b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch CodeDescription* desc_; 1226b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 1227b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1228b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 12293fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass DebugAbbrevSection : public DebugSection { 1230b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 12313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch explicit DebugAbbrevSection(CodeDescription* desc) 12323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef __ELF 12333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : ELFSection(".debug_abbrev", TYPE_PROGBITS, 1), 12343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 12353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : MachOSection("__debug_abbrev", 12363fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch "__DWARF", 12373fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1, 12383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_REGULAR | MachOSection::S_ATTR_DEBUG), 12393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 12403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch desc_(desc) { } 1241b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1242b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF2 standard, figure 14. 1243b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2Tags { 12443fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_FORMAL_PARAMETER = 0x05, 12453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_POINTER_TYPE = 0xf, 12463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_COMPILE_UNIT = 0x11, 12473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_STRUCTURE_TYPE = 0x13, 12483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_BASE_TYPE = 0x24, 12493fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_SUBPROGRAM = 0x2e, 12503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_TAG_VARIABLE = 0x34 1251b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1252b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1253b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF2 standard, figure 16. 1254b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2ChildrenDetermination { 1255b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_CHILDREN_NO = 0, 1256b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_CHILDREN_YES = 1 1257b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1258b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1259b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF standard, figure 17. 1260b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2Attribute { 12613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_LOCATION = 0x2, 1262b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_AT_NAME = 0x3, 12633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_BYTE_SIZE = 0xb, 1264b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_AT_STMT_LIST = 0x10, 1265b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_AT_LOW_PC = 0x11, 12663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_HIGH_PC = 0x12, 12673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_ENCODING = 0x3e, 12683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_FRAME_BASE = 0x40, 12693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_AT_TYPE = 0x49 1270b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1271b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1272b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF2 standard, figure 19. 1273b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2AttributeForm { 1274b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_FORM_ADDR = 0x1, 12753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_BLOCK4 = 0x4, 1276b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_FORM_STRING = 0x8, 12773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_DATA4 = 0x6, 12783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_BLOCK = 0x9, 12793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_DATA1 = 0xb, 12803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_FLAG = 0xc, 12813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch DW_FORM_REF4 = 0x13 1282b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1283b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 12843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch void WriteVariableAbbreviation(Writer* w, 12853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int abbreviation_code, 12863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool has_value, 12873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool is_parameter) { 12883fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(abbreviation_code); 12893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(is_parameter ? DW_TAG_FORMAL_PARAMETER : DW_TAG_VARIABLE); 12903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_CHILDREN_NO); 12913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_NAME); 12923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_STRING); 12933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (has_value) { 12943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_TYPE); 12953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_REF4); 12963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_LOCATION); 12973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_BLOCK4); 12983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 12993fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1303b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch bool WriteBodyInternal(Writer* w) { 13043fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int current_abbreviation = 1; 13053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool extra_info = desc_->IsInfoAvailable(); 1306b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(desc_->IsLineInfoAvailable()); 13073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 1308b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_TAG_COMPILE_UNIT); 13093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(extra_info ? DW_CHILDREN_YES : DW_CHILDREN_NO); 1310b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_AT_NAME); 1311b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_FORM_STRING); 1312b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_AT_LOW_PC); 1313b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_FORM_ADDR); 1314b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_AT_HIGH_PC); 1315b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_FORM_ADDR); 1316b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_AT_STMT_LIST); 1317b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(DW_FORM_DATA4); 1318b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(0); 1319b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(0); 13203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13213fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (extra_info) { 1322b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Scope* scope = desc_->info()->scope(); 1323b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int params = scope->num_parameters(); 1324b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int slots = scope->num_stack_slots(); 1325b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int context_slots = scope->ContextLocalCount(); 13263fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // The real slot ID is internal_slots + context_slot_id. 13273fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch int internal_slots = Context::MIN_CONTEXT_SLOTS; 1328b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch int locals = scope->StackLocalCount(); 1329b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch // Total children is params + slots + context_slots + internal_slots + 1330b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch // locals + 2 (__function and __context). 13313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // The extra duplication below seems to be necessary to keep 13333fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // gdb from getting upset on OSX. 13343fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); // Abbreviation code. 13353fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_TAG_SUBPROGRAM); 1336b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->Write<uint8_t>(DW_CHILDREN_YES); 13373fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_NAME); 13383fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_STRING); 13393fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_LOW_PC); 13403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_ADDR); 13413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_HIGH_PC); 13423fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_ADDR); 13433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_FRAME_BASE); 13443fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_BLOCK4); 13453fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13483fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(current_abbreviation++); 13493fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_TAG_STRUCTURE_TYPE); 13503fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->Write<uint8_t>(DW_CHILDREN_NO); 13513fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_BYTE_SIZE); 13523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_DATA1); 13533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_AT_NAME); 13543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(DW_FORM_STRING); 13553fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); 13573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int param = 0; param < params; ++param) { 13593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, true, true); 13603fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int slot = 0; slot < slots; ++slot) { 13633fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, false, false); 13643fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13653fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13663fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int internal_slot = 0; 13673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch internal_slot < internal_slots; 13683fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch ++internal_slot) { 13693fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, false, false); 13703fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int context_slot = 0; 13733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch context_slot < context_slots; 13743fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch ++context_slot) { 13753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, false, false); 13763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13773fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13783fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch for (int local = 0; local < locals; ++local) { 13793fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, true, false); 13803fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13813fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13823fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // The function. 13833fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, true, false); 13843fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13853fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch // The context. 13863fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch WriteVariableAbbreviation(w, current_abbreviation++, true, false); 13873fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1388b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->WriteULEB128(0); // Terminate the sibling list. 13893fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 13903fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13913fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch w->WriteULEB128(0); // Terminate the table. 1392b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return true; 1393b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 13943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 13953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch private: 13963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CodeDescription* desc_; 1397b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 1398b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1399b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 14003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass DebugLineSection : public DebugSection { 1401b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch public: 1402b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch explicit DebugLineSection(CodeDescription* desc) 14033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef __ELF 1404b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : ELFSection(".debug_line", TYPE_PROGBITS, 1), 14053fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 14063fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : MachOSection("__debug_line", 14073fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch "__DWARF", 14083fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1, 14093fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_REGULAR | MachOSection::S_ATTR_DEBUG), 14103fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 1411b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch desc_(desc) { } 1412b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1413b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF2 standard, figure 34. 1414b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2Opcodes { 1415b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_COPY = 1, 1416b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_ADVANCE_PC = 2, 1417b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_ADVANCE_LINE = 3, 1418b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_SET_FILE = 4, 1419b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_SET_COLUMN = 5, 1420b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNS_NEGATE_STMT = 6 1421b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1422b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1423b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // DWARF2 standard, figure 35. 1424b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch enum DWARF2ExtendedOpcode { 1425b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNE_END_SEQUENCE = 1, 1426b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNE_SET_ADDRESS = 2, 1427b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DW_LNE_DEFINE_FILE = 3 1428b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1429b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1430b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch bool WriteBodyInternal(Writer* w) { 1431b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Write prologue. 1432b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<uint32_t> total_length = w->CreateSlotHere<uint32_t>(); 1433b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t start = w->position(); 1434b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1435e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Used for special opcodes 1436e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const int8_t line_base = 1; 1437e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const uint8_t line_range = 7; 1438e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const int8_t max_line_incr = (line_base + line_range - 1); 1439e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch const uint8_t opcode_base = DW_LNS_NEGATE_STMT + 1; 1440e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1441b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint16_t>(2); // Field version. 1442b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer::Slot<uint32_t> prologue_length = w->CreateSlotHere<uint32_t>(); 1443b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t prologue_start = w->position(); 1444b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // Field minimum_instruction_length. 1445b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // Field default_is_stmt. 1446e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<int8_t>(line_base); // Field line_base. 1447e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(line_range); // Field line_range. 1448e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(opcode_base); // Field opcode_base. 1449b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(0); // DW_LNS_COPY operands count. 1450b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // DW_LNS_ADVANCE_PC operands count. 1451b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // DW_LNS_ADVANCE_LINE operands count. 1452b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // DW_LNS_SET_FILE operands count. 1453b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(1); // DW_LNS_SET_COLUMN operands count. 1454b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(0); // DW_LNS_NEGATE_STMT operands count. 1455b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(0); // Empty include_directories sequence. 1456b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch w->WriteString(desc_->GetFilename().get()); // File name. 1457b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(0); // Current directory. 1458b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(0); // Unknown modification time. 1459b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(0); // Unknown file size. 1460b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(0); 1461b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch prologue_length.set(static_cast<uint32_t>(w->position() - prologue_start)); 1462b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1463b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteExtendedOpcode(w, DW_LNE_SET_ADDRESS, sizeof(intptr_t)); 14641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<intptr_t>(desc_->CodeStart()); 1465e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(DW_LNS_COPY); 1466b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1467b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch intptr_t pc = 0; 1468b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch intptr_t line = 1; 1469b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch bool is_statement = true; 1470b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1471b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch List<LineInfo::PCInfo>* pc_info = desc_->lineinfo()->pc_info(); 1472b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch pc_info->Sort(&ComparePCInfo); 1473e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1474e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch int pc_info_length = pc_info->length(); 1475e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch for (int i = 0; i < pc_info_length; i++) { 1476b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo::PCInfo* info = &pc_info->at(i); 1477b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(info->pc_ >= pc); 1478e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1479e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Reduce bloating in the debug line table by removing duplicate line 1480e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // entries (per DWARF2 standard). 1481e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch intptr_t new_line = desc_->GetScriptLineNumber(info->pos_); 1482e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (new_line == line) { 1483e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch continue; 1484b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1485e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1486e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Mark statement boundaries. For a better debugging experience, mark 1487e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // the last pc address in the function as a statement (e.g. "}"), so that 1488e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // a user can see the result of the last line executed in the function, 1489e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // should control reach the end. 1490e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if ((i+1) == pc_info_length) { 1491e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (!is_statement) { 1492e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(DW_LNS_NEGATE_STMT); 1493e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1494e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else if (is_statement != info->is_statement_) { 1495b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(DW_LNS_NEGATE_STMT); 1496b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch is_statement = !is_statement; 1497b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1498e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1499e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Generate special opcodes, if possible. This results in more compact 1500e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // debug line tables. See the DWARF 2.0 standard to learn more about 1501e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // special opcodes. 1502e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch uintptr_t pc_diff = info->pc_ - pc; 1503e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch intptr_t line_diff = new_line - line; 1504e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1505e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Compute special opcode (see DWARF 2.0 standard) 1506e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch intptr_t special_opcode = (line_diff - line_base) + 1507e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch (line_range * pc_diff) + opcode_base; 1508e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1509e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // If special_opcode is less than or equal to 255, it can be used as a 1510e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // special opcode. If line_diff is larger than the max line increment 1511e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // allowed for a special opcode, or if line_diff is less than the minimum 1512e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // line that can be added to the line register (i.e. line_base), then 1513e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // special_opcode can't be used. 1514e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if ((special_opcode >= opcode_base) && (special_opcode <= 255) && 1515e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch (line_diff <= max_line_incr) && (line_diff >= line_base)) { 1516e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(special_opcode); 1517e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } else { 1518e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(DW_LNS_ADVANCE_PC); 1519e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->WriteSLEB128(pc_diff); 1520e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(DW_LNS_ADVANCE_LINE); 1521e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->WriteSLEB128(line_diff); 1522b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(DW_LNS_COPY); 1523b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1524e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1525e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Increment the pc and line operands. 1526e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch pc += pc_diff; 1527e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch line += line_diff; 1528b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1529e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // Advance the pc to the end of the routine, since the end sequence opcode 1530e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // requires this. 1531e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->Write<uint8_t>(DW_LNS_ADVANCE_PC); 1532e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch w->WriteSLEB128(desc_->CodeSize() - pc); 1533b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch WriteExtendedOpcode(w, DW_LNE_END_SEQUENCE, 0); 1534b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch total_length.set(static_cast<uint32_t>(w->position() - start)); 1535b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return true; 1536b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1537b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1538b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch private: 1539b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void WriteExtendedOpcode(Writer* w, 1540b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DWARF2ExtendedOpcode op, 1541b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch size_t operands_size) { 1542b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(0); 1543b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->WriteULEB128(operands_size + 1); 1544b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch w->Write<uint8_t>(op); 1545b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1546b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1547b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch static int ComparePCInfo(const LineInfo::PCInfo* a, 1548b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch const LineInfo::PCInfo* b) { 1549b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (a->pc_ == b->pc_) { 1550b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (a->is_statement_ != b->is_statement_) { 1551b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return b->is_statement_ ? +1 : -1; 1552b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1553b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return 0; 1554b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else if (a->pc_ > b->pc_) { 1555b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return +1; 1556b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 1557b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return -1; 1558b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1559b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1560b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1561b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch CodeDescription* desc_; 1562b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch}; 1563b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1564b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1565b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 15661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15673fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochclass UnwindInfoSection : public DebugSection { 15681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block public: 15693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch explicit UnwindInfoSection(CodeDescription* desc); 1570b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch virtual bool WriteBodyInternal(Writer* w); 15711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int WriteCIE(Writer* w); 15733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteFDE(Writer* w, int); 15741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteFDEStateOnEntry(Writer* w); 15763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteFDEStateAfterRBPPush(Writer* w); 15773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteFDEStateAfterRBPSet(Writer* w); 15783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteFDEStateAfterRBPPop(Writer* w); 15791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch void WriteLength(Writer* w, 15811e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Writer::Slot<uint32_t>* length_slot, 15821e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int initial_position); 15831e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block private: 15853ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CodeDescription* desc_; 15861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 15871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // DWARF3 Specification, Table 7.23 15881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block enum CFIInstructions { 15891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_ADVANCE_LOC = 0x40, 15901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_OFFSET = 0x80, 15911e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_RESTORE = 0xC0, 15921e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_NOP = 0x00, 15931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_SET_LOC = 0x01, 15941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_ADVANCE_LOC1 = 0x02, 15951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_ADVANCE_LOC2 = 0x03, 15961e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_ADVANCE_LOC4 = 0x04, 15971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_OFFSET_EXTENDED = 0x05, 15981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_RESTORE_EXTENDED = 0x06, 15991e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_UNDEFINED = 0x07, 16001e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_SAME_VALUE = 0x08, 16011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_REGISTER = 0x09, 16021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_REMEMBER_STATE = 0x0A, 16031e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_RESTORE_STATE = 0x0B, 16041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA = 0x0C, 16051e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA_REGISTER = 0x0D, 16061e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA_OFFSET = 0x0E, 16071e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16081e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA_EXPRESSION = 0x0F, 16091e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_EXPRESSION = 0x10, 16101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_OFFSET_EXTENDED_SF = 0x11, 16111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA_SF = 0x12, 16121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_DEF_CFA_OFFSET_SF = 0x13, 16131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_VAL_OFFSET = 0x14, 16141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_VAL_OFFSET_SF = 0x15, 16151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DW_CFA_VAL_EXPRESSION = 0x16 16161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block }; 16171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // System V ABI, AMD64 Supplement, Version 0.99.5, Figure 3.36 16191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block enum RegisterMapping { 16201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Only the relevant ones have been added to reduce clutter. 16211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block AMD64_RBP = 6, 16221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block AMD64_RSP = 7, 16231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block AMD64_RA = 16 16241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block }; 16251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block enum CFIConstants { 16271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block CIE_ID = 0, 16281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block CIE_VERSION = 1, 16291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block CODE_ALIGN_FACTOR = 1, 16301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block DATA_ALIGN_FACTOR = 1, 16311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block RETURN_ADDRESS_REGISTER = AMD64_RA 16321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block }; 16331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block}; 16341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteLength(Writer* w, 16371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Writer::Slot<uint32_t>* length_slot, 16381e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int initial_position) { 16391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uint32_t align = (w->position() - initial_position) % kPointerSize; 16401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (align != 0) { 16421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block for (uint32_t i = 0; i < (kPointerSize - align); i++) { 16431e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_NOP); 16441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 16451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 16461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1647b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK((w->position() - initial_position) % kPointerSize == 0); 16481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block length_slot->set(w->position() - initial_position); 16491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 16501e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16523ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochUnwindInfoSection::UnwindInfoSection(CodeDescription* desc) 16533fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef __ELF 16543fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : ELFSection(".eh_frame", TYPE_X86_64_UNWIND, 1), 16553fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 16563fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch : MachOSection("__eh_frame", "__TEXT", sizeof(uintptr_t), 16573fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch MachOSection::S_REGULAR), 16583fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 16593fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch desc_(desc) { } 16601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochint UnwindInfoSection::WriteCIE(Writer* w) { 16621e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Writer::Slot<uint32_t> cie_length_slot = w->CreateSlotHere<uint32_t>(); 16631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uint32_t cie_position = w->position(); 16641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Write out the CIE header. Currently no 'common instructions' are 16661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // emitted onto the CIE; every FDE has its own set of instructions. 16671e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint32_t>(CIE_ID); 16691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(CIE_VERSION); 16701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(0); // Null augmentation string. 16711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(CODE_ALIGN_FACTOR); 16721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(DATA_ALIGN_FACTOR); 16731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(RETURN_ADDRESS_REGISTER); 16741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteLength(w, &cie_length_slot, cie_position); 16761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16771e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return cie_position; 16781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 16791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteFDE(Writer* w, int cie_position) { 16821e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The only FDE for this function. The CFA is the current RBP. 16831e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block Writer::Slot<uint32_t> fde_length_slot = w->CreateSlotHere<uint32_t>(); 16841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block int fde_position = w->position(); 16851e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<int32_t>(fde_position - cie_position + 4); 16861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uintptr_t>(desc_->CodeStart()); 16881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uintptr_t>(desc_->CodeSize()); 16891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteFDEStateOnEntry(w); 16911e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteFDEStateAfterRBPPush(w); 16921e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteFDEStateAfterRBPSet(w); 16931e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteFDEStateAfterRBPPop(w); 16941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16951e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteLength(w, &fde_length_slot, fde_position); 16961e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 16971e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16981e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 16993ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteFDEStateOnEntry(Writer* w) { 17001e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The first state, just after the control has been transferred to the the 17011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // function. 17021e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17031e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // RBP for this function will be the value of RSP after pushing the RBP 17041e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // for the previous function. The previous RBP has not been pushed yet. 17051e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_DEF_CFA_SF); 17061e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RSP); 17071e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(-kPointerSize); 17081e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17091e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The RA is stored at location CFA + kCallerPCOffset. This is an invariant, 17101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // and hence omitted from the next states. 17111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_OFFSET_EXTENDED); 17121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RA); 17131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(StandardFrameConstants::kCallerPCOffset); 17141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The RBP of the previous function is still in RBP. 17161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_SAME_VALUE); 17171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RBP); 17181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Last location described by this entry. 17201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_SET_LOC); 17211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint64_t>( 17221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc_->GetStackStateStartAddress(CodeDescription::POST_RBP_PUSH)); 17231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteFDEStateAfterRBPPush(Writer* w) { 17271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The second state, just after RBP has been pushed. 17281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // RBP / CFA for this function is now the current RSP, so just set the 17301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // offset from the previous rule (from -8) to 0. 17311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_DEF_CFA_OFFSET); 17321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(0); 17331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The previous RBP is stored at CFA + kCallerFPOffset. This is an invariant 17351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // in this and the next state, and hence omitted in the next state. 17361e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_OFFSET_EXTENDED); 17371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RBP); 17381e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(StandardFrameConstants::kCallerFPOffset); 17391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Last location described by this entry. 17411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_SET_LOC); 17421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint64_t>( 17431e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc_->GetStackStateStartAddress(CodeDescription::POST_RBP_SET)); 17441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteFDEStateAfterRBPSet(Writer* w) { 17481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The third state, after the RBP has been set. 17491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17501e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The CFA can now directly be set to RBP. 17511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_DEF_CFA); 17521e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RBP); 17531e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(0); 17541e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17551e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Last location described by this entry. 17561e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_SET_LOC); 17571e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint64_t>( 17581e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc_->GetStackStateStartAddress(CodeDescription::POST_RBP_POP)); 17591e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17611e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid UnwindInfoSection::WriteFDEStateAfterRBPPop(Writer* w) { 17631e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The fourth (final) state. The RBP has been popped (just before issuing a 17641e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // return). 17651e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17661e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The CFA can is now calculated in the same way as in the first state. 17671e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_DEF_CFA_SF); 17681e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RSP); 17691e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(-kPointerSize); 17701e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17711e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // The RBP 17721e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_OFFSET_EXTENDED); 17731e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteULEB128(AMD64_RBP); 17741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->WriteSLEB128(StandardFrameConstants::kCallerFPOffset); 17751e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17761e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // Last location described by this entry. 17771e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint8_t>(DW_CFA_SET_LOC); 17781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block w->Write<uint64_t>(desc_->CodeEnd()); 17791e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17801e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17811e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1782b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochbool UnwindInfoSection::WriteBodyInternal(Writer* w) { 17831e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uint32_t cie_position = WriteCIE(w); 17841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block WriteFDE(w, cie_position); 17851e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block return true; 17861e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 17871e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17881e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 17891e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif // V8_TARGET_ARCH_X64 17901e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 1791b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic void CreateDWARFSections(CodeDescription* desc, 1792b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone* zone, 1793b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DebugObject* obj) { 17941e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (desc->IsLineInfoAvailable()) { 1795b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch obj->AddSection(new(zone) DebugInfoSection(desc)); 1796b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch obj->AddSection(new(zone) DebugAbbrevSection(desc)); 1797b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch obj->AddSection(new(zone) DebugLineSection(desc)); 1798b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1799b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 1800b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch obj->AddSection(new(zone) UnwindInfoSection(desc)); 18011e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif 1802b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1803b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1804b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1805b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch// ------------------------------------------------------------------- 1806b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch// Binary GDB JIT Interface as described in 1807b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch// http://sourceware.org/gdb/onlinedocs/gdb/Declarations.html 1808b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochextern "C" { 1809b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch typedef enum { 1810b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JIT_NOACTION = 0, 1811b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JIT_REGISTER_FN, 1812b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JIT_UNREGISTER_FN 1813b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } JITAction; 1814b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1815b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch struct JITCodeEntry { 1816b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JITCodeEntry* next_; 1817b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JITCodeEntry* prev_; 1818b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Address symfile_addr_; 1819b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint64_t symfile_size_; 1820b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1821b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1822b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch struct JITDescriptor { 1823b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t version_; 1824b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uint32_t action_flag_; 18253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JITCodeEntry* relevant_entry_; 18263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch JITCodeEntry* first_entry_; 1827b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch }; 1828b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1829b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // GDB will place breakpoint into this function. 1830b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // To prevent GCC from inlining or removing it we place noinline attribute 1831b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // and inline assembler statement inside. 1832b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch void __attribute__((noinline)) __jit_debug_register_code() { 1833b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __asm__(""); 1834b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1835b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1836b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // GDB will inspect contents of this descriptor. 1837b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // Static initialization is necessary to prevent GDB from seeing 1838b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch // uninitialized descriptor. 1839b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JITDescriptor __jit_debug_descriptor = { 1, 0, 0, 0 }; 18403fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 18413fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef OBJECT_PRINT 1842b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch void __gdb_print_v8_object(Object* object) { 1843b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch OFStream os(stdout); 1844b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch object->Print(os); 1845b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch os << flush; 18463fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 18473fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 1848b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1849b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1850b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1851b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic JITCodeEntry* CreateCodeEntry(Address symfile_addr, 1852b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t symfile_size) { 1853b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JITCodeEntry* entry = static_cast<JITCodeEntry*>( 1854b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch malloc(sizeof(JITCodeEntry) + symfile_size)); 1855b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1856b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->symfile_addr_ = reinterpret_cast<Address>(entry + 1); 1857b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->symfile_size_ = symfile_size; 1858b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch MemCopy(entry->symfile_addr_, symfile_addr, symfile_size); 1859b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1860b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->prev_ = entry->next_ = NULL; 1861b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1862b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return entry; 1863b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1864b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1865b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1866b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic void DestroyCodeEntry(JITCodeEntry* entry) { 1867b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch free(entry); 1868b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1869b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1870b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 18713fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdochstatic void RegisterCodeEntry(JITCodeEntry* entry, 18723fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool dump_if_enabled, 18733fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch const char* name_hint) { 1874b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if defined(DEBUG) && !V8_OS_WIN 1875e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch static int file_num = 0; 18763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (FLAG_gdbjit_dump && dump_if_enabled) { 1877e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch static const int kMaxFileNameSize = 64; 1878e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch static const char* kElfFilePrefix = "/tmp/elfdump"; 1879e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch static const char* kObjFileExt = ".o"; 1880e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch char file_name[64]; 1881e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1882b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch SNPrintF(Vector<char>(file_name, kMaxFileNameSize), 1883b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch "%s%s%d%s", 1884b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch kElfFilePrefix, 1885b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch (name_hint != NULL) ? name_hint : "", 1886b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch file_num++, 1887b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch kObjFileExt); 1888e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch WriteBytes(file_name, entry->symfile_addr_, entry->symfile_size_); 1889e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1890e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch#endif 1891e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 1892b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->next_ = __jit_debug_descriptor.first_entry_; 1893b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (entry->next_ != NULL) entry->next_->prev_ = entry; 1894b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.first_entry_ = 1895b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.relevant_entry_ = entry; 1896b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1897b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.action_flag_ = JIT_REGISTER_FN; 1898b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_register_code(); 1899b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1900b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1901b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1902b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic void UnregisterCodeEntry(JITCodeEntry* entry) { 1903b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (entry->prev_ != NULL) { 1904b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->prev_->next_ = entry->next_; 1905b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 1906b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.first_entry_ = entry->next_; 1907b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1908b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1909b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (entry->next_ != NULL) { 1910b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch entry->next_->prev_ = entry->prev_; 1911b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 1912b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1913b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.relevant_entry_ = entry; 1914b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_descriptor.action_flag_ = JIT_UNREGISTER_FN; 1915b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch __jit_debug_register_code(); 1916b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1917b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1918b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1919b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic JITCodeEntry* CreateELFObject(CodeDescription* desc, Isolate* isolate) { 19203fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#ifdef __MACH_O 1921b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone zone(isolate); 1922b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch MachO mach_o(&zone); 19233fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Writer w(&mach_o); 19243fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1925b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch mach_o.AddSection(new(&zone) MachOTextSection(kCodeAlignment, 1926b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch desc->CodeStart(), 1927b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch desc->CodeSize())); 19283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 1929b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch CreateDWARFSections(desc, &zone, &mach_o); 1930b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 19313fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch mach_o.Write(&w, desc->CodeStart(), desc->CodeSize()); 19323fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#else 1933b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone zone(isolate); 1934b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELF elf(&zone); 1935b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Writer w(&elf); 1936b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1937b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch int text_section_index = elf.AddSection( 1938b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch new(&zone) FullHeaderELFSection( 1939b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ".text", 1940b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFSection::TYPE_NOBITS, 1941b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch kCodeAlignment, 1942b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch desc->CodeStart(), 1943b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 0, 1944b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch desc->CodeSize(), 1945b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ELFSection::FLAG_ALLOC | ELFSection::FLAG_EXEC)); 1946b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1947b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch CreateSymbolsTable(desc, &zone, &elf, text_section_index); 1948b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1949b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch CreateDWARFSections(desc, &zone, &elf); 1950b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1951b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch elf.Write(&w); 19523fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch#endif 1953b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1954b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return CreateCodeEntry(w.buffer(), w.position()); 1955b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1956b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1957b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1958b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic bool SameCodeObjects(void* key1, void* key2) { 1959b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return key1 == key2; 1960b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1961b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1962b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1963e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdochstatic HashMap* GetEntries() { 1964e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch static HashMap* entries = NULL; 1965e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch if (entries == NULL) { 1966e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch entries = new HashMap(&SameCodeObjects); 1967e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch } 1968e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch return entries; 1969e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch} 1970b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1971b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1972b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic uint32_t HashForCodeObject(Code* code) { 1973b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch static const uintptr_t kGoldenRatio = 2654435761u; 1974b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch uintptr_t hash = reinterpret_cast<uintptr_t>(code->address()); 1975b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return static_cast<uint32_t>((hash >> kCodeAlignmentBits) * kGoldenRatio); 1976b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1977b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1978b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1979b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic const intptr_t kLineInfoTag = 0x1; 1980b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1981b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1982b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochstatic bool IsLineInfoTagged(void* ptr) { 1983b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return 0 != (reinterpret_cast<intptr_t>(ptr) & kLineInfoTag); 1984b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1985b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1986b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1987b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic void* TagLineInfo(LineInfo* ptr) { 1988b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return reinterpret_cast<void*>( 1989b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch reinterpret_cast<intptr_t>(ptr) | kLineInfoTag); 1990b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1991b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1992b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1993b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic LineInfo* UntagLineInfo(void* ptr) { 1994b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return reinterpret_cast<LineInfo*>(reinterpret_cast<intptr_t>(ptr) & 1995b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ~kLineInfoTag); 1996b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 1997b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1998b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 1999b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvoid GDBJITInterface::AddCode(Handle<Name> name, 2000b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Handle<Script> script, 20013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Handle<Code> code, 20023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompilationInfo* info) { 2003b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (!FLAG_gdbjit) return; 2004b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2005b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Script::InitLineEnds(script); 2006b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2007b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (!name.is_null() && name->IsString()) { 2008b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch SmartArrayPointer<char> name_cstring = 2009b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Handle<String>::cast(name)->ToCString(DISALLOW_NULLS); 2010b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch AddCode(name_cstring.get(), *code, GDBJITInterface::FUNCTION, *script, 2011b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch info); 20121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } else { 20133fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch AddCode("", *code, GDBJITInterface::FUNCTION, *script, info); 20141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block } 20151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 20161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 2017b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 20183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochstatic void AddUnwindInfo(CodeDescription* desc) { 2019b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch#if V8_TARGET_ARCH_X64 20201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (desc->tag() == GDBJITInterface::FUNCTION) { 20211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block // To avoid propagating unwinding information through 2022e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // compilation pipeline we use an approximation. 2023e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch // For most use cases this should not affect usability. 20241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static const int kFramePointerPushOffset = 1; 20251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static const int kFramePointerSetOffset = 4; 20261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block static const int kFramePointerPopOffset = -3; 20271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 20281e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t frame_pointer_push_address = 20291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeStart() + kFramePointerPushOffset; 20301e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 20311e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t frame_pointer_set_address = 20321e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeStart() + kFramePointerSetOffset; 20331e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 20341e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block uintptr_t frame_pointer_pop_address = 20351e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeEnd() + kFramePointerPopOffset; 20361e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 20371e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_PUSH, 20381e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block frame_pointer_push_address); 20391e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_SET, 20401e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block frame_pointer_set_address); 20411e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_POP, 20421e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block frame_pointer_pop_address); 2043b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 20441e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_PUSH, 20451e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeStart()); 20461e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_SET, 20471e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeStart()); 20481e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->SetStackStateStartAddress(CodeDescription::POST_RBP_POP, 20491e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block desc->CodeEnd()); 2050b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 20511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block#endif // V8_TARGET_ARCH_X64 2052b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 2053b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2054b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2055b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic base::LazyMutex mutex = LAZY_MUTEX_INITIALIZER; 20568b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch 20578b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch 2058b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid GDBJITInterface::AddCode(const char* name, 2059b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch Code* code, 20601e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block GDBJITInterface::CodeTag tag, 20613fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch Script* script, 20623fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch CompilationInfo* info) { 2063b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch base::LockGuard<base::Mutex> lock_guard(mutex.Pointer()); 2064b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DisallowHeapAllocation no_gc; 2065b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2066e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true); 2067b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (e->value != NULL && !IsLineInfoTagged(e->value)) return; 2068b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2069b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* lineinfo = UntagLineInfo(e->value); 2070b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch CodeDescription code_desc(name, 2071b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch code, 2072b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch script != NULL ? Handle<Script>(script) 2073b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch : Handle<Script>(), 20741e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block lineinfo, 20753fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch tag, 20763fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch info); 2077b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 20781e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block if (!FLAG_gdbjit_full && !code_desc.IsLineInfoAvailable()) { 2079b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch delete lineinfo; 2080e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch GetEntries()->Remove(code, HashForCodeObject(code)); 2081b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch return; 2082b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 2083b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 20841e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block AddUnwindInfo(&code_desc); 2085b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Isolate* isolate = code->GetIsolate(); 2086b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch JITCodeEntry* entry = CreateELFObject(&code_desc, isolate); 2087b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(!IsLineInfoTagged(entry)); 2088b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2089b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch delete lineinfo; 2090b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch e->value = entry; 2091b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 20923fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch const char* name_hint = NULL; 20933fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch bool should_dump = false; 20943fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (FLAG_gdbjit_dump) { 20953fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch if (strlen(FLAG_gdbjit_dump_filter) == 0) { 20963fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch name_hint = name; 20973fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch should_dump = true; 20983fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } else if (name != NULL) { 20993fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch name_hint = strstr(name, FLAG_gdbjit_dump_filter); 21003fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch should_dump = (name_hint != NULL); 21013fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 21023fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch } 21033fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch RegisterCodeEntry(entry, should_dump, name_hint); 2104b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 2105b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2106b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2107b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdochvoid GDBJITInterface::RemoveCode(Code* code) { 2108b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (!FLAG_gdbjit) return; 2109b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2110b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch base::LockGuard<base::Mutex> lock_guard(mutex.Pointer()); 2111e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HashMap::Entry* e = GetEntries()->Lookup(code, 2112e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HashForCodeObject(code), 2113e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch false); 2114b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (e == NULL) return; 2115b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2116b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch if (IsLineInfoTagged(e->value)) { 2117b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch delete UntagLineInfo(e->value); 2118b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } else { 2119b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch JITCodeEntry* entry = static_cast<JITCodeEntry*>(e->value); 2120b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch UnregisterCodeEntry(entry); 2121b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch DestroyCodeEntry(entry); 2122b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch } 2123b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch e->value = NULL; 2124e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch GetEntries()->Remove(code, HashForCodeObject(code)); 2125b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 2126b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2127b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2128b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvoid GDBJITInterface::RemoveCodeRange(Address start, Address end) { 2129b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch HashMap* entries = GetEntries(); 2130b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Zone zone(Isolate::Current()); 2131b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch ZoneList<Code*> dead_codes(1, &zone); 2132b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2133b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch for (HashMap::Entry* e = entries->Start(); e != NULL; e = entries->Next(e)) { 2134b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Code* code = reinterpret_cast<Code*>(e->key); 2135b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (code->address() >= start && code->address() < end) { 2136b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch dead_codes.Add(code, &zone); 2137b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2138b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2139b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2140b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch for (int i = 0; i < dead_codes.length(); i++) { 2141b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch RemoveCode(dead_codes.at(i)); 2142b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2143b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch} 2144b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2145b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2146b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochstatic void RegisterDetailedLineInfo(Code* code, LineInfo* line_info) { 2147b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch base::LockGuard<base::Mutex> lock_guard(mutex.Pointer()); 2148b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(!IsLineInfoTagged(line_info)); 2149e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true); 2150b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch DCHECK(e->value == NULL); 2151b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch e->value = TagLineInfo(line_info); 2152b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} 2153b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2154b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch 2155b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochvoid GDBJITInterface::EventHandler(const v8::JitCodeEvent* event) { 2156b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (!FLAG_gdbjit) return; 2157b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch switch (event->type) { 2158b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_ADDED: { 2159b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Code* code = Code::GetCodeFromTargetAddress( 2160b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch reinterpret_cast<Address>(event->code_start)); 2161b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch if (code->kind() == Code::OPTIMIZED_FUNCTION || 2162b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch code->kind() == Code::FUNCTION) { 2163b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2164b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2165b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch EmbeddedVector<char, 256> buffer; 2166b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch StringBuilder builder(buffer.start(), buffer.length()); 2167b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch builder.AddSubstring(event->name.str, static_cast<int>(event->name.len)); 2168b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch AddCode(builder.Finalize(), code, NON_FUNCTION, NULL, NULL); 2169b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2170b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2171b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_MOVED: 2172b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2173b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_REMOVED: { 2174b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Code* code = Code::GetCodeFromTargetAddress( 2175b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch reinterpret_cast<Address>(event->code_start)); 2176b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch RemoveCode(code); 2177b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2178b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2179b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_ADD_LINE_POS_INFO: { 2180b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* line_info = reinterpret_cast<LineInfo*>(event->user_data); 2181b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch line_info->SetPosition(static_cast<intptr_t>(event->line_info.offset), 2182b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch static_cast<int>(event->line_info.pos), 2183b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch event->line_info.position_type == 2184b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch v8::JitCodeEvent::STATEMENT_POSITION); 2185b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2186b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2187b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_START_LINE_INFO_RECORDING: { 2188b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch v8::JitCodeEvent* mutable_event = const_cast<v8::JitCodeEvent*>(event); 2189b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch mutable_event->user_data = new LineInfo(); 2190b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2191b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2192b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch case v8::JitCodeEvent::CODE_END_LINE_INFO_RECORDING: { 2193b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch LineInfo* line_info = reinterpret_cast<LineInfo*>(event->user_data); 2194b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch Code* code = Code::GetCodeFromTargetAddress( 2195b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch reinterpret_cast<Address>(event->code_start)); 2196b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch RegisterDetailedLineInfo(code, line_info); 2197b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch break; 2198b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2199b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch } 2200b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch} 2201b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2202b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 2203b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch} } // namespace v8::internal 2204b8e0da25ee8efac3bb05cd6b2730aafbd96119f4Ben Murdoch#endif 2205