1 //===-- MipsTargetStreamer.cpp - Mips Target Streamer Methods -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file provides Mips specific target streamer methods.
12 //===----------------------------------------------------------------------===//
14 #include "InstPrinter/MipsInstPrinter.h"
15 #include "MipsMCTargetDesc.h"
16 #include "MipsTargetObjectFile.h"
17 #include "MipsTargetStreamer.h"
18 #include "llvm/MC/MCContext.h"
19 #include "llvm/MC/MCELF.h"
20 #include "llvm/MC/MCSectionELF.h"
21 #include "llvm/MC/MCSubtargetInfo.h"
22 #include "llvm/MC/MCSymbol.h"
23 #include "llvm/Support/CommandLine.h"
24 #include "llvm/Support/ELF.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/FormattedStream.h"
30 MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S)
31 : MCTargetStreamer(S), canHaveModuleDirective(true) {}
32 void MipsTargetStreamer::emitDirectiveSetMicroMips() {}
33 void MipsTargetStreamer::emitDirectiveSetNoMicroMips() {}
34 void MipsTargetStreamer::emitDirectiveSetMips16() {}
35 void MipsTargetStreamer::emitDirectiveSetNoMips16() {}
36 void MipsTargetStreamer::emitDirectiveSetReorder() {}
37 void MipsTargetStreamer::emitDirectiveSetNoReorder() {}
38 void MipsTargetStreamer::emitDirectiveSetMacro() {}
39 void MipsTargetStreamer::emitDirectiveSetNoMacro() {}
40 void MipsTargetStreamer::emitDirectiveSetAt() {}
41 void MipsTargetStreamer::emitDirectiveSetNoAt() {}
42 void MipsTargetStreamer::emitDirectiveEnd(StringRef Name) {}
43 void MipsTargetStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {}
44 void MipsTargetStreamer::emitDirectiveAbiCalls() {}
45 void MipsTargetStreamer::emitDirectiveNaN2008() {}
46 void MipsTargetStreamer::emitDirectiveNaNLegacy() {}
47 void MipsTargetStreamer::emitDirectiveOptionPic0() {}
48 void MipsTargetStreamer::emitDirectiveOptionPic2() {}
49 void MipsTargetStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
50 unsigned ReturnReg) {}
51 void MipsTargetStreamer::emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) {}
52 void MipsTargetStreamer::emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) {
54 void MipsTargetStreamer::emitDirectiveSetMips32R2() {}
55 void MipsTargetStreamer::emitDirectiveSetMips64() {}
56 void MipsTargetStreamer::emitDirectiveSetMips64R2() {}
57 void MipsTargetStreamer::emitDirectiveSetDsp() {}
58 void MipsTargetStreamer::emitDirectiveCpload(unsigned RegNo) {}
59 void MipsTargetStreamer::emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
60 const MCSymbol &Sym, bool IsReg) {
62 void MipsTargetStreamer::emitDirectiveModuleOddSPReg(bool Enabled,
64 if (!Enabled && !IsO32ABI)
65 report_fatal_error("+nooddspreg is only valid for O32");
68 MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
69 formatted_raw_ostream &OS)
70 : MipsTargetStreamer(S), OS(OS) {}
72 void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
73 OS << "\t.set\tmicromips\n";
74 setCanHaveModuleDir(false);
77 void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
78 OS << "\t.set\tnomicromips\n";
79 setCanHaveModuleDir(false);
82 void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
83 OS << "\t.set\tmips16\n";
84 setCanHaveModuleDir(false);
87 void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
88 OS << "\t.set\tnomips16\n";
89 setCanHaveModuleDir(false);
92 void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
93 OS << "\t.set\treorder\n";
94 setCanHaveModuleDir(false);
97 void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
98 OS << "\t.set\tnoreorder\n";
99 setCanHaveModuleDir(false);
102 void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
103 OS << "\t.set\tmacro\n";
104 setCanHaveModuleDir(false);
107 void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
108 OS << "\t.set\tnomacro\n";
109 setCanHaveModuleDir(false);
112 void MipsTargetAsmStreamer::emitDirectiveSetAt() {
113 OS << "\t.set\tat\n";
114 setCanHaveModuleDir(false);
117 void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
118 OS << "\t.set\tnoat\n";
119 setCanHaveModuleDir(false);
122 void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
123 OS << "\t.end\t" << Name << '\n';
126 void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
127 OS << "\t.ent\t" << Symbol.getName() << '\n';
130 void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
132 void MipsTargetAsmStreamer::emitDirectiveNaN2008() { OS << "\t.nan\t2008\n"; }
134 void MipsTargetAsmStreamer::emitDirectiveNaNLegacy() {
135 OS << "\t.nan\tlegacy\n";
138 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
139 OS << "\t.option\tpic0\n";
142 void MipsTargetAsmStreamer::emitDirectiveOptionPic2() {
143 OS << "\t.option\tpic2\n";
146 void MipsTargetAsmStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
147 unsigned ReturnReg) {
149 << StringRef(MipsInstPrinter::getRegisterName(StackReg)).lower() << ","
151 << StringRef(MipsInstPrinter::getRegisterName(ReturnReg)).lower() << '\n';
154 void MipsTargetAsmStreamer::emitDirectiveSetMips32R2() {
155 OS << "\t.set\tmips32r2\n";
156 setCanHaveModuleDir(false);
159 void MipsTargetAsmStreamer::emitDirectiveSetMips64() {
160 OS << "\t.set\tmips64\n";
161 setCanHaveModuleDir(false);
164 void MipsTargetAsmStreamer::emitDirectiveSetMips64R2() {
165 OS << "\t.set\tmips64r2\n";
166 setCanHaveModuleDir(false);
169 void MipsTargetAsmStreamer::emitDirectiveSetDsp() {
170 OS << "\t.set\tdsp\n";
171 setCanHaveModuleDir(false);
173 // Print a 32 bit hex number with all numbers.
174 static void printHex32(unsigned Value, raw_ostream &OS) {
176 for (int i = 7; i >= 0; i--)
177 OS.write_hex((Value & (0xF << (i * 4))) >> (i * 4));
180 void MipsTargetAsmStreamer::emitMask(unsigned CPUBitmask,
181 int CPUTopSavedRegOff) {
183 printHex32(CPUBitmask, OS);
184 OS << ',' << CPUTopSavedRegOff << '\n';
187 void MipsTargetAsmStreamer::emitFMask(unsigned FPUBitmask,
188 int FPUTopSavedRegOff) {
190 printHex32(FPUBitmask, OS);
191 OS << "," << FPUTopSavedRegOff << '\n';
194 void MipsTargetAsmStreamer::emitDirectiveCpload(unsigned RegNo) {
196 << StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << "\n";
197 setCanHaveModuleDir(false);
200 void MipsTargetAsmStreamer::emitDirectiveCpsetup(unsigned RegNo,
204 OS << "\t.cpsetup\t$"
205 << StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << ", ";
209 << StringRef(MipsInstPrinter::getRegisterName(RegOrOffset)).lower();
215 OS << Sym.getName() << "\n";
216 setCanHaveModuleDir(false);
219 void MipsTargetAsmStreamer::emitDirectiveModuleFP(
220 MipsABIFlagsSection::FpABIKind Value, bool Is32BitABI) {
221 MipsTargetStreamer::emitDirectiveModuleFP(Value, Is32BitABI);
223 StringRef ModuleValue;
224 OS << "\t.module\tfp=";
225 OS << ABIFlagsSection.getFpABIString(Value) << "\n";
228 void MipsTargetAsmStreamer::emitDirectiveSetFp(
229 MipsABIFlagsSection::FpABIKind Value) {
230 StringRef ModuleValue;
232 OS << ABIFlagsSection.getFpABIString(Value) << "\n";
235 void MipsTargetAsmStreamer::emitMipsAbiFlags() {
236 // No action required for text output.
239 void MipsTargetAsmStreamer::emitDirectiveModuleOddSPReg(bool Enabled,
241 MipsTargetStreamer::emitDirectiveModuleOddSPReg(Enabled, IsO32ABI);
243 OS << "\t.module\t" << (Enabled ? "" : "no") << "oddspreg\n";
246 // This part is for ELF object output.
247 MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
248 const MCSubtargetInfo &STI)
249 : MipsTargetStreamer(S), MicroMipsEnabled(false), STI(STI) {
250 MCAssembler &MCA = getStreamer().getAssembler();
251 uint64_t Features = STI.getFeatureBits();
252 Triple T(STI.getTargetTriple());
253 Pic = (MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_)
257 // Update e_header flags
261 if (Features & Mips::FeatureMips64r6)
262 EFlags |= ELF::EF_MIPS_ARCH_64R6;
263 else if (Features & Mips::FeatureMips64r2)
264 EFlags |= ELF::EF_MIPS_ARCH_64R2;
265 else if (Features & Mips::FeatureMips64)
266 EFlags |= ELF::EF_MIPS_ARCH_64;
267 else if (Features & Mips::FeatureMips5)
268 EFlags |= ELF::EF_MIPS_ARCH_5;
269 else if (Features & Mips::FeatureMips4)
270 EFlags |= ELF::EF_MIPS_ARCH_4;
271 else if (Features & Mips::FeatureMips3)
272 EFlags |= ELF::EF_MIPS_ARCH_3;
273 else if (Features & Mips::FeatureMips32r6)
274 EFlags |= ELF::EF_MIPS_ARCH_32R6;
275 else if (Features & Mips::FeatureMips32r2)
276 EFlags |= ELF::EF_MIPS_ARCH_32R2;
277 else if (Features & Mips::FeatureMips32)
278 EFlags |= ELF::EF_MIPS_ARCH_32;
279 else if (Features & Mips::FeatureMips2)
280 EFlags |= ELF::EF_MIPS_ARCH_2;
282 EFlags |= ELF::EF_MIPS_ARCH_1;
284 if (T.isArch64Bit()) {
285 if (Features & Mips::FeatureN32)
286 EFlags |= ELF::EF_MIPS_ABI2;
287 else if (Features & Mips::FeatureO32) {
288 EFlags |= ELF::EF_MIPS_ABI_O32;
289 EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
291 // No need to set any bit for N64 which is the default ABI at the moment
292 // for 64-bit Mips architectures.
294 if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
295 EFlags |= ELF::EF_MIPS_32BITMODE;
298 EFlags |= ELF::EF_MIPS_ABI_O32;
302 if (Features & Mips::FeatureNaN2008)
303 EFlags |= ELF::EF_MIPS_NAN2008;
305 // -mabicalls and -mplt are not implemented but we should act as if they were
307 EFlags |= ELF::EF_MIPS_CPIC;
308 if (Features & Mips::FeatureN64)
309 EFlags |= ELF::EF_MIPS_PIC;
311 MCA.setELFHeaderEFlags(EFlags);
314 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
315 if (!isMicroMipsEnabled())
317 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
318 uint8_t Type = MCELF::GetType(Data);
319 if (Type != ELF::STT_FUNC)
322 // The "other" values are stored in the last 6 bits of the second byte
323 // The traditional defines for STO values assume the full byte and thus
324 // the shift to pack it.
325 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
328 void MipsTargetELFStreamer::finish() {
329 MCAssembler &MCA = getStreamer().getAssembler();
330 MCContext &Context = MCA.getContext();
331 MCStreamer &OS = getStreamer();
332 const MCObjectFileInfo &OFI = *Context.getObjectFileInfo();
333 Triple T(STI.getTargetTriple());
334 uint64_t Features = STI.getFeatureBits();
336 // .bss, .text and .data are always at least 16-byte aligned.
337 MCSectionData &TextSectionData =
338 MCA.getOrCreateSectionData(*OFI.getTextSection());
339 MCSectionData &DataSectionData =
340 MCA.getOrCreateSectionData(*OFI.getDataSection());
341 MCSectionData &BSSSectionData =
342 MCA.getOrCreateSectionData(*OFI.getBSSSection());
344 TextSectionData.setAlignment(std::max(16u, TextSectionData.getAlignment()));
345 DataSectionData.setAlignment(std::max(16u, DataSectionData.getAlignment()));
346 BSSSectionData.setAlignment(std::max(16u, BSSSectionData.getAlignment()));
348 if (T.isArch64Bit() && (Features & Mips::FeatureN64)) {
349 // The EntrySize value of 1 seems strange since the records are neither
350 // 1-byte long nor fixed length but it matches the value GAS emits.
351 const MCSectionELF *Sec =
352 Context.getELFSection(".MIPS.options", ELF::SHT_MIPS_OPTIONS,
353 ELF::SHF_ALLOC | ELF::SHF_MIPS_NOSTRIP,
354 SectionKind::getMetadata(), 1, "");
355 MCA.getOrCreateSectionData(*Sec).setAlignment(8);
356 OS.SwitchSection(Sec);
358 OS.EmitIntValue(1, 1); // kind
359 OS.EmitIntValue(40, 1); // size
360 OS.EmitIntValue(0, 2); // section
361 OS.EmitIntValue(0, 4); // info
362 OS.EmitIntValue(0, 4); // ri_gprmask
363 OS.EmitIntValue(0, 4); // pad
364 OS.EmitIntValue(0, 4); // ri_cpr[0]mask
365 OS.EmitIntValue(0, 4); // ri_cpr[1]mask
366 OS.EmitIntValue(0, 4); // ri_cpr[2]mask
367 OS.EmitIntValue(0, 4); // ri_cpr[3]mask
368 OS.EmitIntValue(0, 8); // ri_gp_value
370 const MCSectionELF *Sec =
371 Context.getELFSection(".reginfo", ELF::SHT_MIPS_REGINFO, ELF::SHF_ALLOC,
372 SectionKind::getMetadata(), 24, "");
373 MCA.getOrCreateSectionData(*Sec).setAlignment(4);
374 OS.SwitchSection(Sec);
376 OS.EmitIntValue(0, 4); // ri_gprmask
377 OS.EmitIntValue(0, 4); // ri_cpr[0]mask
378 OS.EmitIntValue(0, 4); // ri_cpr[1]mask
379 OS.EmitIntValue(0, 4); // ri_cpr[2]mask
380 OS.EmitIntValue(0, 4); // ri_cpr[3]mask
381 OS.EmitIntValue(0, 4); // ri_gp_value
386 void MipsTargetELFStreamer::emitAssignment(MCSymbol *Symbol,
387 const MCExpr *Value) {
388 // If on rhs is micromips symbol then mark Symbol as microMips.
389 if (Value->getKind() != MCExpr::SymbolRef)
391 const MCSymbol &RhsSym =
392 static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
393 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(&RhsSym);
394 uint8_t Type = MCELF::GetType(Data);
395 if ((Type != ELF::STT_FUNC) ||
396 !(MCELF::getOther(Data) & (ELF::STO_MIPS_MICROMIPS >> 2)))
399 MCSymbolData &SymbolData = getStreamer().getOrCreateSymbolData(Symbol);
400 // The "other" values are stored in the last 6 bits of the second byte.
401 // The traditional defines for STO values assume the full byte and thus
402 // the shift to pack it.
403 MCELF::setOther(SymbolData, ELF::STO_MIPS_MICROMIPS >> 2);
406 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
407 return static_cast<MCELFStreamer &>(Streamer);
410 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
411 MicroMipsEnabled = true;
413 MCAssembler &MCA = getStreamer().getAssembler();
414 unsigned Flags = MCA.getELFHeaderEFlags();
415 Flags |= ELF::EF_MIPS_MICROMIPS;
416 MCA.setELFHeaderEFlags(Flags);
419 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
420 MicroMipsEnabled = false;
421 setCanHaveModuleDir(false);
424 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
425 MCAssembler &MCA = getStreamer().getAssembler();
426 unsigned Flags = MCA.getELFHeaderEFlags();
427 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
428 MCA.setELFHeaderEFlags(Flags);
429 setCanHaveModuleDir(false);
432 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
434 setCanHaveModuleDir(false);
437 void MipsTargetELFStreamer::emitDirectiveSetReorder() {
439 setCanHaveModuleDir(false);
442 void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
443 MCAssembler &MCA = getStreamer().getAssembler();
444 unsigned Flags = MCA.getELFHeaderEFlags();
445 Flags |= ELF::EF_MIPS_NOREORDER;
446 MCA.setELFHeaderEFlags(Flags);
447 setCanHaveModuleDir(false);
450 void MipsTargetELFStreamer::emitDirectiveSetMacro() {
452 setCanHaveModuleDir(false);
455 void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
457 setCanHaveModuleDir(false);
460 void MipsTargetELFStreamer::emitDirectiveSetAt() {
462 setCanHaveModuleDir(false);
465 void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
467 setCanHaveModuleDir(false);
470 void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
474 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
478 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
479 MCAssembler &MCA = getStreamer().getAssembler();
480 unsigned Flags = MCA.getELFHeaderEFlags();
481 Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
482 MCA.setELFHeaderEFlags(Flags);
485 void MipsTargetELFStreamer::emitDirectiveNaN2008() {
486 MCAssembler &MCA = getStreamer().getAssembler();
487 unsigned Flags = MCA.getELFHeaderEFlags();
488 Flags |= ELF::EF_MIPS_NAN2008;
489 MCA.setELFHeaderEFlags(Flags);
492 void MipsTargetELFStreamer::emitDirectiveNaNLegacy() {
493 MCAssembler &MCA = getStreamer().getAssembler();
494 unsigned Flags = MCA.getELFHeaderEFlags();
495 Flags &= ~ELF::EF_MIPS_NAN2008;
496 MCA.setELFHeaderEFlags(Flags);
499 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
500 MCAssembler &MCA = getStreamer().getAssembler();
501 unsigned Flags = MCA.getELFHeaderEFlags();
502 // This option overrides other PIC options like -KPIC.
504 Flags &= ~ELF::EF_MIPS_PIC;
505 MCA.setELFHeaderEFlags(Flags);
508 void MipsTargetELFStreamer::emitDirectiveOptionPic2() {
509 MCAssembler &MCA = getStreamer().getAssembler();
510 unsigned Flags = MCA.getELFHeaderEFlags();
512 // NOTE: We are following the GAS behaviour here which means the directive
513 // 'pic2' also sets the CPIC bit in the ELF header. This is different from
514 // what is stated in the SYSV ABI which consider the bits EF_MIPS_PIC and
515 // EF_MIPS_CPIC to be mutually exclusive.
516 Flags |= ELF::EF_MIPS_PIC | ELF::EF_MIPS_CPIC;
517 MCA.setELFHeaderEFlags(Flags);
520 void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
521 unsigned ReturnReg) {
525 void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
526 int CPUTopSavedRegOff) {
530 void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
531 int FPUTopSavedRegOff) {
535 void MipsTargetELFStreamer::emitDirectiveSetMips32R2() {
536 setCanHaveModuleDir(false);
539 void MipsTargetELFStreamer::emitDirectiveSetMips64() {
540 setCanHaveModuleDir(false);
543 void MipsTargetELFStreamer::emitDirectiveSetMips64R2() {
544 setCanHaveModuleDir(false);
547 void MipsTargetELFStreamer::emitDirectiveSetDsp() {
548 setCanHaveModuleDir(false);
551 void MipsTargetELFStreamer::emitDirectiveCpload(unsigned RegNo) {
553 // This directive expands to:
554 // lui $gp, %hi(_gp_disp)
555 // addui $gp, $gp, %lo(_gp_disp)
556 // addu $gp, $gp, $reg
557 // when support for position independent code is enabled.
558 if (!Pic || (isN32() || isN64()))
561 // There's a GNU extension controlled by -mno-shared that allows
562 // locally-binding symbols to be accessed using absolute addresses.
563 // This is currently not supported. When supported -mno-shared makes
564 // .cpload expand to:
565 // lui $gp, %hi(__gnu_local_gp)
566 // addiu $gp, $gp, %lo(__gnu_local_gp)
568 StringRef SymName("_gp_disp");
569 MCAssembler &MCA = getStreamer().getAssembler();
570 MCSymbol *GP_Disp = MCA.getContext().GetOrCreateSymbol(SymName);
571 MCA.getOrCreateSymbolData(*GP_Disp);
574 TmpInst.setOpcode(Mips::LUi);
575 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
576 const MCSymbolRefExpr *HiSym = MCSymbolRefExpr::Create(
577 "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_HI, MCA.getContext());
578 TmpInst.addOperand(MCOperand::CreateExpr(HiSym));
579 getStreamer().EmitInstruction(TmpInst, STI);
583 TmpInst.setOpcode(Mips::ADDiu);
584 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
585 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
586 const MCSymbolRefExpr *LoSym = MCSymbolRefExpr::Create(
587 "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_LO, MCA.getContext());
588 TmpInst.addOperand(MCOperand::CreateExpr(LoSym));
589 getStreamer().EmitInstruction(TmpInst, STI);
593 TmpInst.setOpcode(Mips::ADDu);
594 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
595 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
596 TmpInst.addOperand(MCOperand::CreateReg(RegNo));
597 getStreamer().EmitInstruction(TmpInst, STI);
599 setCanHaveModuleDir(false);
602 void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
606 // Only N32 and N64 emit anything for .cpsetup iff PIC is set.
607 if (!Pic || !(isN32() || isN64()))
610 MCAssembler &MCA = getStreamer().getAssembler();
613 // Either store the old $gp in a register or on the stack
615 // move $save, $gpreg
616 Inst.setOpcode(Mips::DADDu);
617 Inst.addOperand(MCOperand::CreateReg(RegOrOffset));
618 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
619 Inst.addOperand(MCOperand::CreateReg(Mips::ZERO));
621 // sd $gpreg, offset($sp)
622 Inst.setOpcode(Mips::SD);
623 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
624 Inst.addOperand(MCOperand::CreateReg(Mips::SP));
625 Inst.addOperand(MCOperand::CreateImm(RegOrOffset));
627 getStreamer().EmitInstruction(Inst, STI);
630 const MCSymbolRefExpr *HiExpr = MCSymbolRefExpr::Create(
631 Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_HI, MCA.getContext());
632 const MCSymbolRefExpr *LoExpr = MCSymbolRefExpr::Create(
633 Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_LO, MCA.getContext());
634 // lui $gp, %hi(%neg(%gp_rel(funcSym)))
635 Inst.setOpcode(Mips::LUi);
636 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
637 Inst.addOperand(MCOperand::CreateExpr(HiExpr));
638 getStreamer().EmitInstruction(Inst, STI);
641 // addiu $gp, $gp, %lo(%neg(%gp_rel(funcSym)))
642 Inst.setOpcode(Mips::ADDiu);
643 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
644 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
645 Inst.addOperand(MCOperand::CreateExpr(LoExpr));
646 getStreamer().EmitInstruction(Inst, STI);
649 // daddu $gp, $gp, $funcreg
650 Inst.setOpcode(Mips::DADDu);
651 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
652 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
653 Inst.addOperand(MCOperand::CreateReg(RegNo));
654 getStreamer().EmitInstruction(Inst, STI);
656 setCanHaveModuleDir(false);
659 void MipsTargetELFStreamer::emitMipsAbiFlags() {
660 MCAssembler &MCA = getStreamer().getAssembler();
661 MCContext &Context = MCA.getContext();
662 MCStreamer &OS = getStreamer();
663 const MCSectionELF *Sec =
664 Context.getELFSection(".MIPS.abiflags", ELF::SHT_MIPS_ABIFLAGS,
665 ELF::SHF_ALLOC, SectionKind::getMetadata(), 24, "");
666 MCSectionData &ABIShndxSD = MCA.getOrCreateSectionData(*Sec);
667 ABIShndxSD.setAlignment(8);
668 OS.SwitchSection(Sec);
670 OS << ABIFlagsSection;
673 void MipsTargetELFStreamer::emitDirectiveModuleOddSPReg(bool Enabled,
675 MipsTargetStreamer::emitDirectiveModuleOddSPReg(Enabled, IsO32ABI);
677 ABIFlagsSection.OddSPReg = Enabled;