124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner//===-- DWARFLocationDescription.cpp ----------------------------*- C++ -*-===// 224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// The LLVM Compiler Infrastructure 424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// This file is distributed under the University of Illinois Open Source 624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// License. See LICENSE.TXT for details. 724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner//===----------------------------------------------------------------------===// 924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 1024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include "DWARFLocationDescription.h" 1124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include "DWARFDefines.h" 1224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include "lldb/lldb-private.h" 1324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include "lldb/Core/Stream.h" 1424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 1524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 1624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerusing namespace lldb_private; 1724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 1836da2aa6dc5ad9994b638ed09eb81c44cc05540bGreg Claytonstatic int print_dwarf_exp_op (Stream &s, const DataExtractor& data, lldb::offset_t *offset_ptr, int address_size, int dwarf_ref_size); 1924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 2024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerint 21169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Inghamprint_dwarf_expression (Stream &s, 2224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner const DataExtractor& data, 2324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int address_size, 2424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int dwarf_ref_size, 2524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner bool location_expression) 2624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner{ 2724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int op_count = 0; 2836da2aa6dc5ad9994b638ed09eb81c44cc05540bGreg Clayton lldb::offset_t offset = 0; 2924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner while (data.ValidOffset(offset)) 3024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 3124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (location_expression && op_count > 0) 3224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 3324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner // err (baton, "Dwarf location expressions may only have one operand!"); 3424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 1; 3524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 3624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (op_count > 0) 3724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 38169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Ingham s.PutCString(", "); 3924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 4024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (print_dwarf_exp_op (s, data, &offset, address_size, dwarf_ref_size) == 1) 4124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 1; 4224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner op_count++; 4324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 4424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 4524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 0; 4624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner} 4724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 4824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerstatic int 49169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Inghamprint_dwarf_exp_op (Stream &s, 5024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner const DataExtractor& data, 5136da2aa6dc5ad9994b638ed09eb81c44cc05540bGreg Clayton lldb::offset_t *offset_ptr, 5224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int address_size, 5324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int dwarf_ref_size) 5424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner{ 5524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner uint8_t opcode = data.GetU8(offset_ptr); 5624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner DRC_class opcode_class; 5724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner uint64_t uint; 5824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int64_t sint; 5924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 6024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner int size; 6124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 6224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner opcode_class = DW_OP_value_to_class (opcode) & (~DRC_DWARFv3); 6324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 64169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Ingham s.Printf("%s ", DW_OP_value_to_name (opcode)); 6524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 6624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner /* Does this take zero parameters? If so we can shortcut this function. */ 6724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (opcode_class == DRC_ZEROOPERANDS) 6824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 0; 6924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 7024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (opcode_class == DRC_TWOOPERANDS && opcode == DW_OP_bregx) 7124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 7224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner uint = data.GetULEB128(offset_ptr); 7324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner sint = data.GetSLEB128(offset_ptr); 745f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea s.Printf("%" PRIu64 " %" PRIi64, uint, sint); 7524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 0; 7624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 7724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner if (opcode_class != DRC_ONEOPERAND) 7824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 79169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Ingham s.Printf("UNKNOWN OP %u", opcode); 8024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 1; 8124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 8224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 8324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner switch (opcode) 8424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 8524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_addr: size = address_size; break; 8624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const1u: size = 1; break; 8724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const1s: size = -1; break; 8824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const2u: size = 2; break; 8924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const2s: size = -2; break; 9024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const4u: size = 4; break; 9124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const4s: size = -4; break; 9224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const8u: size = 8; break; 9324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_const8s: size = -8; break; 9424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_constu: size = 128; break; 9524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_consts: size = -128; break; 9624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_fbreg: size = -128; break; 9724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg0: 9824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg1: 9924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg2: 10024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg3: 10124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg4: 10224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg5: 10324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg6: 10424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg7: 10524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg8: 10624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg9: 10724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg10: 10824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg11: 10924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg12: 11024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg13: 11124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg14: 11224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg15: 11324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg16: 11424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg17: 11524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg18: 11624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg19: 11724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg20: 11824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg21: 11924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg22: 12024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg23: 12124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg24: 12224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg25: 12324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg26: 12424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg27: 12524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg28: 12624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg29: 12724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg30: 12824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_breg31: 12924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = -128; break; 13024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_pick: 13124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 1; break; 13224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_deref_size: 13324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 1; break; 13424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_xderef_size: 13524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 1; break; 13624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_plus_uconst: 13724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 128; break; 13824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_skip: 13924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = -2; break; 14024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_bra: 14124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = -2; break; 14224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_call2: 14324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 2; break; 14424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_call4: 14524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 4; break; 14624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_call_ref: 14724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = dwarf_ref_size; break; 14824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_piece: 14924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 128; break; 15024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner case DW_OP_regx: 15124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner size = 128; break; 15224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner default: 153169c5fbc8cac8a0bd724bd18fd9d816ca3d6486aJim Ingham s.Printf("UNKNOWN ONE-OPERAND OPCODE, #%u", opcode); 15424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 1; 15524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 15624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 15724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner switch (size) 15824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner { 1595f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case -1: sint = (int8_t) data.GetU8(offset_ptr); s.Printf("%+" PRIi64, sint); break; 1605f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case -2: sint = (int16_t) data.GetU16(offset_ptr); s.Printf("%+" PRIi64, sint); break; 1615f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case -4: sint = (int32_t) data.GetU32(offset_ptr); s.Printf("%+" PRIi64, sint); break; 1625f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case -8: sint = (int64_t) data.GetU64(offset_ptr); s.Printf("%+" PRIi64, sint); break; 1635f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case -128: sint = data.GetSLEB128(offset_ptr); s.Printf("%+" PRIi64, sint); break; 1645f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case 1: uint = data.GetU8(offset_ptr); s.Printf("0x%2.2" PRIx64, uint); break; 1655f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case 2: uint = data.GetU16(offset_ptr); s.Printf("0x%4.4" PRIx64, uint); break; 1665f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case 4: uint = data.GetU32(offset_ptr); s.Printf("0x%8.8" PRIx64, uint); break; 1675f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case 8: uint = data.GetU64(offset_ptr); s.Printf("0x%16.16" PRIx64, uint); break; 1685f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea case 128: uint = data.GetULEB128(offset_ptr); s.Printf("0x%" PRIx64, uint); break; 16924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner } 17024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 17124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner return 0; 17224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner} 173