MCStreamer.cpp revision 5d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962
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" 15484291c27319668ad99cb87def000254357736fbRafael Espindola#include "llvm/Support/ErrorHandling.h" 16d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner#include "llvm/Support/raw_ostream.h" 1758bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner#include "llvm/ADT/SmallString.h" 1858bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner#include "llvm/ADT/Twine.h" 193580dea910d622f2a6dbb72e97f5f7d0ef979542Chris Lattner#include <cstdlib> 20a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbarusing namespace llvm; 21a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar 227768a9dce14431018133cd586f5c8ce3e057f069Rafael EspindolaMCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx) { 237d0805dcb82e9ba1d90ce8d702169683b9caded7Joerg Sonnenberger const MCSection *section = NULL; 247d0805dcb82e9ba1d90ce8d702169683b9caded7Joerg Sonnenberger SectionStack.push_back(std::make_pair(section, section)); 25a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar} 26a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar 27a11af531ec48ad84f790b9511f003ac5c934a999Daniel DunbarMCStreamer::~MCStreamer() { 28a11af531ec48ad84f790b9511f003ac5c934a999Daniel Dunbar} 29ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner 30d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattnerraw_ostream &MCStreamer::GetCommentOS() { 31d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner // By default, discard comments. 32d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner return nulls(); 33d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner} 34d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner 3532a006e606742b1c5401e49607e33717bb5441f0Rafael Espindolavoid MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, 3632a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola const MCSymbol *Label, int PointerSize) { 3732a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola // emit the sequence to set the address 3832a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitIntValue(dwarf::DW_LNS_extended_op, 1); 3932a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitULEB128IntValue(PointerSize + 1); 4032a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitIntValue(dwarf::DW_LNE_set_address, 1); 4132a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola EmitSymbolValue(Label, PointerSize); 4232a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola 4332a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola // emit the sequence for the LineDelta (from 1) and a zero address delta. 4432a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola MCDwarfLineAddr::Emit(this, LineDelta, 0); 4532a006e606742b1c5401e49607e33717bb5441f0Rafael Espindola} 46d79d9dce47d505369662ae5111dba24f9ccdef68Chris Lattner 4732ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner/// EmitIntValue - Special case of EmitValue that avoids the client having to 4832ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner/// pass in a MCExpr for constant integers. 4932ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattnervoid MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 5032ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner unsigned AddrSpace) { 51dea914bed9fb1d5c08e944557989ccddb6849000Devang Patel assert(Size <= 8 && "Invalid size"); 52818b5f5dd7979b097564f829896353df286127ffMatt Beaumont-Gay assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && 53818b5f5dd7979b097564f829896353df286127ffMatt Beaumont-Gay "Invalid size"); 542df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola char buf[8]; 552df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola // FIXME: Endianness assumption. 562df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola for (unsigned i = 0; i != Size; ++i) 572df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola buf[i] = uint8_t(Value >> (i * 8)); 582df042cb32ecb8d2e1d499dfa27d5074c8b40e13Rafael Espindola EmitBytes(StringRef(buf, Size), AddrSpace); 5932ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner} 6032ae3fe0ba469240753e2342e36485f7c9acfb5cChris Lattner 613ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the 623ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// client having to pass in a MCExpr for constant integers. 633ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindolavoid MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace) { 64660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola SmallString<32> Tmp; 65660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola raw_svector_ostream OSE(Tmp); 66660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola MCObjectWriter::EncodeULEB128(Value, OSE); 67660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola EmitBytes(OSE.str(), AddrSpace); 68c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby} 69c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby 703ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the 713ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindola/// client having to pass in a MCExpr for constant integers. 723ff57094a7d176a759ddb1e1668489d89064f56cRafael Espindolavoid MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { 73660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola SmallString<32> Tmp; 74660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola raw_svector_ostream OSE(Tmp); 75660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola MCObjectWriter::EncodeSLEB128(Value, OSE); 76660b5fc4d019bf22fbe14dfb81c5b59444fa3506Rafael Espindola EmitBytes(OSE.str(), AddrSpace); 77c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby} 78c095793b4ab027181605c79c9808df12afe45d63Kevin Enderby 790bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindolavoid MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, 800bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola unsigned AddrSpace) { 8190a5a0cd7c353651c953020b1e41b4c6e2f21883Rafael Espindola if (getContext().getAsmInfo().hasAggressiveSymbolFolding()) { 820bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitValue(Value, Size, AddrSpace); 830bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola return; 840bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola } 850bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola MCSymbol *ABS = getContext().CreateTempSymbol(); 860bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitAssignment(ABS, Value); 870bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola EmitSymbolValue(ABS, Size, AddrSpace); 880bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola} 890bbe0b440ee2cef47dcb7b281825eb70341c16ddRafael Espindola 9089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 9189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, 9289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola unsigned AddrSpace) { 9389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitValueImpl(Value, Size, false, AddrSpace); 9489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 9589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 9689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitPCRelValue(const MCExpr *Value, unsigned Size, 9789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola unsigned AddrSpace) { 9889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitValueImpl(Value, Size, true, AddrSpace); 9989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 10089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 10189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 10289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola bool isPCRel, unsigned AddrSpace) { 10389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, isPCRel, 10489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola AddrSpace); 10589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 10689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 1076cde3e6e993126df756e3be5b9ef43540b904644Chris Lattnervoid MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 1086cde3e6e993126df756e3be5b9ef43540b904644Chris Lattner unsigned AddrSpace) { 10989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitSymbolValue(Sym, Size, false, AddrSpace); 11089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 11189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 11289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EmitPCRelSymbolValue(const MCSymbol *Sym, unsigned Size, 11389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola unsigned AddrSpace) { 11489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitSymbolValue(Sym, Size, true, AddrSpace); 1156cde3e6e993126df756e3be5b9ef43540b904644Chris Lattner} 1166cde3e6e993126df756e3be5b9ef43540b904644Chris Lattner 1173e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindolavoid MCStreamer::EmitGPRel32Value(const MCExpr *Value) { 1183e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola report_fatal_error("unsupported directive in streamer"); 1193e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola} 1203e03211625bba5bbb70a193c140ebf4dd8388bb7Rafael Espindola 121ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner/// EmitFill - Emit NumBytes bytes worth of the value specified by 122ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner/// FillValue. This implements directives such as '.space'. 123aaec205b87637cd0d59d4f11630db603686eb73dChris Lattnervoid MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, 124aaec205b87637cd0d59d4f11630db603686eb73dChris Lattner unsigned AddrSpace) { 125ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); 126ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner for (uint64_t i = 0, e = NumBytes; i != e; ++i) 127aaec205b87637cd0d59d4f11630db603686eb73dChris Lattner EmitValue(E, 1, AddrSpace); 128ddf6bdde44287b5b559bc403a02ff971e15e8303Chris Lattner} 12991bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner 130af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindolabool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, 131af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola StringRef Filename) { 132af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola return getContext().GetDwarfFile(Filename, FileNo) == 0; 133af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola} 134af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola 135af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindolavoid MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, 136af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola unsigned Column, unsigned Flags, 137af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola unsigned Isa, 138af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola unsigned Discriminator) { 139af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa, 140af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola Discriminator); 141af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola} 142af6b5808756d6ce335df9eb158efa33894b401c4Rafael Espindola 14389b9372605db2ce3b0085c84089e389f7bc1fbddRafael EspindolaMCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { 14489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola if (FrameInfos.empty()) 14589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola return NULL; 14689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola return &FrameInfos.back(); 14789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 14889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 14989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindolavoid MCStreamer::EnsureValidFrame() { 15089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 15189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola if (!CurFrame || CurFrame->End) 15289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola report_fatal_error("No open frame"); 15389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola} 15489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola 155cdfecc8759941c2996214070478d30084b79d463Rafael Espindolabool MCStreamer::EmitCFIStartProc() { 15689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 15789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola if (CurFrame && !CurFrame->End) { 15889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola report_fatal_error("Starting a frame before finishing the previous one!"); 15989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola return true; 16089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola } 1615bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCDwarfFrameInfo Frame; 16289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola Frame.Begin = getContext().CreateTempSymbol(); 16389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitLabel(Frame.Begin); 16489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola FrameInfos.push_back(Frame); 165cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 166cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 167cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 168cdfecc8759941c2996214070478d30084b79d463Rafael Espindolabool MCStreamer::EmitCFIEndProc() { 16989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 17089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 17189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->End = getContext().CreateTempSymbol(); 17289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EmitLabel(CurFrame->End); 173cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 174cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 175cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 176b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindolabool MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { 177b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola EnsureValidFrame(); 178b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 179b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 180b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola EmitLabel(Label); 181b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 182b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MachineLocation Source(Register, -Offset); 183b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 184b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola CurFrame->Instructions.push_back(Instruction); 185b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola return false; 186b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola} 187b40a71fda188f8ca564e606ac2cb051a44ada311Rafael Espindola 188cdfecc8759941c2996214070478d30084b79d463Rafael Espindolabool MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { 18989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 1905bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 1915bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 1925bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola EmitLabel(Label); 1935bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 1945bba08425374ca36fe5fbc7423ce1a09858e4097Rafael Espindola MachineLocation Source(MachineLocation::VirtualFP, -Offset); 195fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 196fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 197cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 198cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 199cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 2005d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindolavoid MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { 2015d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola EnsureValidFrame(); 2025d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 2035d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 2045d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola EmitLabel(Label); 2055d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MachineLocation Dest(MachineLocation::VirtualFP); 2065d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MachineLocation Source(MachineLocation::VirtualFP, Adjustment); 2075d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 2085d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola CurFrame->Instructions.push_back(Instruction); 2095d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola} 2105d7dcd3335234d2a2bc16dc69f86fbb5dcaa8962Rafael Espindola 211cdfecc8759941c2996214070478d30084b79d463Rafael Espindolabool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { 21289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 213b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 214b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 215b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola EmitLabel(Label); 216b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MachineLocation Dest(Register); 217b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MachineLocation Source(MachineLocation::VirtualFP); 218b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 219b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola CurFrame->Instructions.push_back(Instruction); 220b4601bd2ffdde372f1323f6b6ec98acd433501ceRafael Espindola return false; 221cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 222cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 223cdfecc8759941c2996214070478d30084b79d463Rafael Espindolabool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { 22489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 225b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 226b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 227b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola EmitLabel(Label); 228b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MachineLocation Dest(Register, Offset); 229b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MachineLocation Source(Register, Offset); 230b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola MCCFIInstruction Instruction(Label, Dest, Source); 231b790a17efba26f4365b5ffb847dd53fde063c48dRafael Espindola CurFrame->Instructions.push_back(Instruction); 232cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 233cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 234cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 23525f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindolavoid MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { 23625f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola EnsureValidFrame(); 23725f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 23825f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 23925f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola EmitLabel(Label); 24025f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MachineLocation Dest(Register, Offset); 24125f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MachineLocation Source(Register, Offset); 24225f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 24325f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola CurFrame->Instructions.push_back(Instruction); 24425f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola} 24525f492e77858dc5a95fcd7180e73aff47925b668Rafael Espindola 2463a83c40ab61d5ca624f2bbadd70237c6adbdb304Rafael Espindolabool MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, 2473a83c40ab61d5ca624f2bbadd70237c6adbdb304Rafael Espindola unsigned Encoding) { 24889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 24989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 25089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->Personality = Sym; 2513a83c40ab61d5ca624f2bbadd70237c6adbdb304Rafael Espindola CurFrame->PersonalityEncoding = Encoding; 252cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 253cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 254cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 255bdc3167c086dd4358e24692075db5e7784140843Rafael Espindolabool MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { 25689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola EnsureValidFrame(); 25789b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 25889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola CurFrame->Lsda = Sym; 259bdc3167c086dd4358e24692075db5e7784140843Rafael Espindola CurFrame->LsdaEncoding = Encoding; 260cdfecc8759941c2996214070478d30084b79d463Rafael Espindola return false; 261cdfecc8759941c2996214070478d30084b79d463Rafael Espindola} 262cdfecc8759941c2996214070478d30084b79d463Rafael Espindola 263fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindolabool MCStreamer::EmitCFIRememberState() { 264fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EnsureValidFrame(); 265fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 266fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 267fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EmitLabel(Label); 268fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label); 269fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 270fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola return false; 271fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola} 272fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola 273fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindolabool MCStreamer::EmitCFIRestoreState() { 274fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola // FIXME: Error if there is no matching cfi_remember_state. 275fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EnsureValidFrame(); 276fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 277fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 278fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola EmitLabel(Label); 279fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label); 280fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola CurFrame->Instructions.push_back(Instruction); 281fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola return false; 282fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola} 283fe024d0a624404ada11fb330e7360abc5f88742eRafael Espindola 284c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindolavoid MCStreamer::EmitCFISameValue(int64_t Register) { 285c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola EnsureValidFrame(); 286c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 287c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCSymbol *Label = getContext().CreateTempSymbol(); 288c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola EmitLabel(Label); 289c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); 290c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola CurFrame->Instructions.push_back(Instruction); 291c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola} 292c57543964d1382d3d3a5005f415b6c0f49671b3aRafael Espindola 293b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitFnStart() { 294b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 295b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 296b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 297b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 298b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitFnEnd() { 299b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 300b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 301b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 302b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 303b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitCantUnwind() { 304b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 305b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 306b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 307b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 308b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitHandlerData() { 309b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 310b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 311b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 312b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 313b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikovvoid MCStreamer::EmitPersonality(const MCSymbol *Personality) { 314b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov errs() << "Not implemented yet\n"; 315b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov abort(); 316b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov} 317b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov 31857caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { 31957caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 32057caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 32157caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 32257caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 32357caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitPad(int64_t Offset) { 32457caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 32557caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 32657caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 32757caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 32857caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikovvoid MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { 32957caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov errs() << "Not implemented yet\n"; 33057caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov abort(); 33157caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov} 33257caad7a33ff145b71545f10dcfbbf2fd0f595d3Anton Korobeynikov 333ab3b3651add0915a5a051b177029ad117a877f52Matt Fleming/// EmitRawText - If this file is backed by an assembly streamer, this dumps 33491bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner/// the specified string in the output .s file. This capability is 33591bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner/// indicated by the hasRawTextSupport() predicate. 33691bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattnervoid MCStreamer::EmitRawText(StringRef String) { 33791bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner errs() << "EmitRawText called on an MCStreamer that doesn't support it, " 33891bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner " something must not be fully mc'ized\n"; 33991bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner abort(); 34091bead790518fcf5cb26019fb1ebf2372e8a5b3fChris Lattner} 34158bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner 34258bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattnervoid MCStreamer::EmitRawText(const Twine &T) { 34358bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner SmallString<128> Str; 34458bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner T.toVector(Str); 34558bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner EmitRawText(Str.str()); 34658bc4dd4a91443ddd3120b0a2f1801ad4d6aae1cChris Lattner} 347