MCStreamer.cpp revision debd7e4e8bc5cfe61bfb71835ce2b1a3fbccc2be
1a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===// 2a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// 3a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// The LLVM Compiler Infrastructure 4a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// 5a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// This file is distributed under the University of Illinois Open Source 6a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// License. See LICENSE.TXT for details. 7a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar// 8a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar//===----------------------------------------------------------------------===// 9a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar 100bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola#include "llvm/MC/MCAsmInfo.h" 11af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola#include "llvm/MC/MCContext.h" 12a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar#include "llvm/MC/MCStreamer.h" 13ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner#include "llvm/MC/MCExpr.h" 14c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby#include "llvm/MC/MCObjectWriter.h" 15ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola#include "llvm/MC/MCSymbol.h" 16484291c27319668ad99cb87def000254357736fbRafael Espindola#include "llvm/Support/ErrorHandling.h" 17d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner#include "llvm/Support/raw_ostream.h" 1858bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner#include "llvm/ADT/SmallString.h" 1958bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner#include "llvm/ADT/Twine.h" 203580dea910d622f2a6dbb72e97f5f7d0ef979542Chris Lattner#include <cstdlib> 21a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbarusing namespace llvm; 22a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar 237768a9dce14431018133cd586f5c8ce3e057f069Rafael EspindolaMCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx) { 247d0805dcb82e9ba1d90ce8d702169683b9caded7Joerg Sonnenberger const MCSection *section = NULL; 257d0805dcb82e9ba1d90ce8d702169683b9caded7Joerg Sonnenberger SectionStack.push_back(std::make_pair(section, section)); 26a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar} 27a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar 28a11af531ec48ad84f790b9511f003ac5c934a999Daniel DunbarMCStreamer::~MCStreamer() { 29a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar} 30ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner 31a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindolaconst MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, 32a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola const MCSymbol *A, 33a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola const MCSymbol *B) { 34a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None; 35a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola const MCExpr *ARef = 36a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCSymbolRefExpr::Create(A, Variant, Context); 37a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola const MCExpr *BRef = 38a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCSymbolRefExpr::Create(B, Variant, Context); 39a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola const MCExpr *AddrDelta = 40a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context); 41a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola return AddrDelta; 42a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola} 43a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola 44a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindolaconst MCExpr *MCStreamer::ForceExpAbs(MCStreamer *Streamer, 45a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCContext &Context, const MCExpr* Expr) { 46a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola if (Context.getAsmInfo().hasAggressiveSymbolFolding()) 47a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola return Expr; 48a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola 49a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola MCSymbol *ABS = Context.CreateTempSymbol(); 50a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola Streamer->EmitAssignment(ABS, Expr); 51a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola return MCSymbolRefExpr::Create(ABS, Context); 52a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola} 53a37bd1d02c0e3d93474fdf30352bf4a425cbe25bRafael Espindola 54d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattnerraw_ostream &MCStreamer::GetCommentOS() { 55d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner // By default, discard comments. 56d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner return nulls(); 57d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner} 58d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner 5932a006e606742b1c5401e49607e33717bb5441f0Rafael Espindolavoid MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, 6032a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola const MCSymbol *Label, int PointerSize) { 6132a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola // emit the sequence to set the address 6232a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitIntValue(dwarf::DW_LNS_extended_op, 1); 6332a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitULEB128IntValue(PointerSize + 1); 6432a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitIntValue(dwarf::DW_LNE_set_address, 1); 6532a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitSymbolValue(Label, PointerSize); 6632a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola 6732a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola // emit the sequence for the LineDelta (from 1) and a zero address delta. 6832a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola MCDwarfLineAddr::Emit(this, LineDelta, 0); 6932a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola} 70d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner 7132ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner/// EmitIntValue - Special case of EmitValue that avoids the client having to 7232ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner/// pass in a MCExpr for constant integers. 7332ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattnervoid MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 7432ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner unsigned AddrSpace) { 75dea914bed9fb1d5c08e944557989ccddb6849000Devang Patel assert(Size <= 8 && "Invalid size"); 76818b5f5dd7979b097564f829896353df286127ffMatt Beaumont-Gay assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && 77818b5f5dd7979b097564f829896353df286127ffMatt Beaumont-Gay "Invalid size"); 782df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola char buf[8]; 792df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola // FIXME: Endianness assumption. 802df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola for (unsigned i = 0; i != Size; ++i) 812df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola buf[i] = uint8_t(Value >> (i * 8)); 822df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola EmitBytes(StringRef(buf, Size), AddrSpace); 8332ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner} 8432ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner 853ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the 863ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// client having to pass in a MCExpr for constant integers. 873ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindolavoid MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace) { 88660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola SmallString<32> Tmp; 89660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola raw_svector_ostream OSE(Tmp); 90660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola MCObjectWriter::EncodeULEB128(Value, OSE); 91660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola EmitBytes(OSE.str(), AddrSpace); 92c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby} 93c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby 943ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the 953ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// client having to pass in a MCExpr for constant integers. 963ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindolavoid MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { 97660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola SmallString<32> Tmp; 98660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola raw_svector_ostream OSE(Tmp); 99660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola MCObjectWriter::EncodeSLEB128(Value, OSE); 100660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola EmitBytes(OSE.str(), AddrSpace); 101c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby} 102c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby 1030bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindolavoid MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, 1040bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola unsigned AddrSpace) { 10590a5a0cd7c353651c953020b1e41b4c6e2f21883Rafael Espindola if (getContext().getAsmInfo().hasAggressiveSymbolFolding()) { 1060bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitValue(Value, Size, AddrSpace); 1070bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola return; 1080bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola } 1090bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola MCSymbol *ABS = getContext().CreateTempSymbol(); 1100bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitAssignment(ABS, Value); 1110bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitSymbolValue(ABS, Size, AddrSpace); 1120bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola} 1130bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola 11489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 11589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, 11689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola unsigned AddrSpace) { 117debd7e4e8bc5cfe61bfb71835ce2b1a3fbccc2beRafael Espindola EmitValueImpl(Value, Size, AddrSpace); 11889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 11989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 12089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 121debd7e4e8bc5cfe61bfb71835ce2b1a3fbccc2beRafael Espindola unsigned AddrSpace) { 122debd7e4e8bc5cfe61bfb71835ce2b1a3fbccc2beRafael Espindola EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, 12389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola AddrSpace); 12489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 12589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 1263e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindolavoid MCStreamer::EmitGPRel32Value(const MCExpr *Value) { 1273e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola report_fatal_error("unsupported directive in streamer"); 1283e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola} 1293e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola 130ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner/// EmitFill - Emit NumBytes bytes worth of the value specified by 131ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner/// FillValue. This implements directives such as '.space'. 132aaec205b87637cd0d59d4f11630db603686eb73dChris Lattnervoid MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, 133aaec205b87637cd0d59d4f11630db603686eb73dChris Lattner unsigned AddrSpace) { 134ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); 135ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner for (uint64_t i = 0, e = NumBytes; i != e; ++i) 136aaec205b87637cd0d59d4f11630db603686eb73dChris Lattner EmitValue(E, 1, AddrSpace); 137ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner} 13891bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner 139af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindolabool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, 140af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola StringRef Filename) { 141af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola return getContext().GetDwarfFile(Filename, FileNo) == 0; 142af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola} 143af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola 144af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindolavoid MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, 145af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola unsigned Column, unsigned Flags, 146af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola unsigned Isa, 1473f3bf9387b75f4c932e4c59bd7af719d26ae4b99Devang Patel unsigned Discriminator, 1483f3bf9387b75f4c932e4c59bd7af719d26ae4b99Devang Patel StringRef FileName) { 149af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa, 150af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola Discriminator); 151af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola} 152af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola 15389b9372605db2ce3b0085c84089e389f7bc1fbddRafael EspindolaMCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { 15489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola if (FrameInfos.empty()) 15589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola return NULL; 15689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola return &FrameInfos.back(); 15789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 15889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 15989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EnsureValidFrame() { 16089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 16189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola if (!CurFrame || CurFrame->End) 16289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola report_fatal_error("No open frame"); 16389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 16489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 1658bca4106dfc2945723251db10e340183f3e372ddRafael Espindolavoid MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, 1668bca4106dfc2945723251db10e340183f3e372ddRafael Espindola MCSymbol *EHSymbol) { 1678bca4106dfc2945723251db10e340183f3e372ddRafael Espindola} 1688bca4106dfc2945723251db10e340183f3e372ddRafael Espindola 169ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindolavoid MCStreamer::EmitLabel(MCSymbol *Symbol) { 170ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); 171ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola assert(getCurrentSection() && "Cannot emit before setting section!"); 172ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola Symbol->setSection(*getCurrentSection()); 173ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola 174ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix(); 175ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola if (!Symbol->getName().startswith(Prefix)) 176ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola LastNonPrivate = Symbol; 177ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola} 178ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola 179066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIStartProc() { 18089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 181066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindola if (CurFrame && !CurFrame->End) 18289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola report_fatal_error("Starting a frame before finishing the previous one!"); 1835bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCDwarfFrameInfo Frame; 18489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola Frame.Begin = getContext().CreateTempSymbol(); 185ed708f9c1facb9928ef2f79503e7030c8f25b00dRafael Espindola Frame.Function = LastNonPrivate; 18689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitLabel(Frame.Begin); 18789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola FrameInfos.push_back(Frame); 188cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 189cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 190066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIEndProc() { 19189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 19289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 19389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->End = getContext().CreateTempSymbol(); 19489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitLabel(CurFrame->End); 195cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 196cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 197066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { 198b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola EnsureValidFrame(); 199b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 200b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 201b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola EmitLabel(Label); 202b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 203b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MachineLocation Source(Register, -Offset); 204b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 205b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola CurFrame->Instructions.push_back(Instruction); 206b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola} 207b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola 208066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { 20989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 2105bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 2115bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 2125bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola EmitLabel(Label); 2135bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 2145bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MachineLocation Source(MachineLocation::VirtualFP, -Offset); 215fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 216fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 217cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 218cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 2195d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindolavoid MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { 2205d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola EnsureValidFrame(); 2215d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 2225d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 2235d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola EmitLabel(Label); 2245d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 2255d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MachineLocation Source(MachineLocation::VirtualFP, Adjustment); 2265d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 2275d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola CurFrame->Instructions.push_back(Instruction); 2285d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola} 2295d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola 230066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { 23189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 232b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 233b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 234b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola EmitLabel(Label); 235b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MachineLocation Dest(Register); 236b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MachineLocation Source(MachineLocation::VirtualFP); 237b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 238b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola CurFrame->Instructions.push_back(Instruction); 239cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 240cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 241066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { 24289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 243b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 244b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 245b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola EmitLabel(Label); 246b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MachineLocation Dest(Register, Offset); 247b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MachineLocation Source(Register, Offset); 248b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 249b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola CurFrame->Instructions.push_back(Instruction); 250cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 251cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 25225f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindolavoid MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { 25325f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola EnsureValidFrame(); 25425f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 25525f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 25625f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola EmitLabel(Label); 25725f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MachineLocation Dest(Register, Offset); 25825f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MachineLocation Source(Register, Offset); 25925f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 26025f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola CurFrame->Instructions.push_back(Instruction); 26125f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola} 26225f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola 263066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, 2643a83c40ab61d5ca624f2bbadd70237c6adbdb304Rafael Espindola unsigned Encoding) { 26589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 26689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 26789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->Personality = Sym; 2683a83c40ab61d5ca624f2bbadd70237c6adbdb304Rafael Espindola CurFrame->PersonalityEncoding = Encoding; 269cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 270cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 271066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { 27289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 27389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 27489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->Lsda = Sym; 275bdc3167c086dd4358e24692075db5e7784140843Rafael Espindola CurFrame->LsdaEncoding = Encoding; 276cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 277cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 278066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIRememberState() { 279fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EnsureValidFrame(); 280fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 281fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 282fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EmitLabel(Label); 283fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label); 284fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 285fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola} 286fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola 287066c2f495ae396ce5335e374c45b1e4ace4f2470Rafael Espindolavoid MCStreamer::EmitCFIRestoreState() { 288fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola // FIXME: Error if there is no matching cfi_remember_state. 289fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EnsureValidFrame(); 290fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 291fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 292fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EmitLabel(Label); 293fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label); 294fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 295fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola} 296fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola 297c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindolavoid MCStreamer::EmitCFISameValue(int64_t Register) { 298c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola EnsureValidFrame(); 299c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 300c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 301c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola EmitLabel(Label); 302c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); 303c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola CurFrame->Instructions.push_back(Instruction); 304c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola} 305c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola 306b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitFnStart() { 307b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 308b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 309b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 310b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 311b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitFnEnd() { 312b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 313b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 314b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 315b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 316b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitCantUnwind() { 317b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 318b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 319b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 320b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 321b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitHandlerData() { 322b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 323b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 324b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 325b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 326b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitPersonality(const MCSymbol *Personality) { 327b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 328b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 329b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 330b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 33157caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { 33257caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 33357caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 33457caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 33557caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 33657caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitPad(int64_t Offset) { 33757caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 33857caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 33957caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 34057caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 34157caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { 34257caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 34357caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 34457caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 34557caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 346ab3b3651add0915a5a051b177029ad117a877f52Matt Fleming/// EmitRawText - If this file is backed by an assembly streamer, this dumps 34791bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner/// the specified string in the output .s file. This capability is 34891bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner/// indicated by the hasRawTextSupport() predicate. 34991bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattnervoid MCStreamer::EmitRawText(StringRef String) { 35091bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner errs() << "EmitRawText called on an MCStreamer that doesn't support it, " 35191bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner " something must not be fully mc'ized\n"; 35291bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner abort(); 35391bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner} 35458bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner 35558bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattnervoid MCStreamer::EmitRawText(const Twine &T) { 35658bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner SmallString<128> Str; 35758bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner T.toVector(Str); 35858bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner EmitRawText(Str.str()); 35958bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner} 360