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 MCA.setELFHeaderEFlags(EFlags);
308 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
309 if (!isMicroMipsEnabled())
311 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
312 uint8_t Type = MCELF::GetType(Data);
313 if (Type != ELF::STT_FUNC)
316 // The "other" values are stored in the last 6 bits of the second byte
317 // The traditional defines for STO values assume the full byte and thus
318 // the shift to pack it.
319 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
322 void MipsTargetELFStreamer::finish() {
323 MCAssembler &MCA = getStreamer().getAssembler();
324 MCContext &Context = MCA.getContext();
325 MCStreamer &OS = getStreamer();
326 const MCObjectFileInfo &OFI = *Context.getObjectFileInfo();
327 Triple T(STI.getTargetTriple());
328 uint64_t Features = STI.getFeatureBits();
330 // .bss, .text and .data are always at least 16-byte aligned.
331 MCSectionData &TextSectionData =
332 MCA.getOrCreateSectionData(*OFI.getTextSection());
333 MCSectionData &DataSectionData =
334 MCA.getOrCreateSectionData(*OFI.getDataSection());
335 MCSectionData &BSSSectionData =
336 MCA.getOrCreateSectionData(*OFI.getBSSSection());
338 TextSectionData.setAlignment(std::max(16u, TextSectionData.getAlignment()));
339 DataSectionData.setAlignment(std::max(16u, DataSectionData.getAlignment()));
340 BSSSectionData.setAlignment(std::max(16u, BSSSectionData.getAlignment()));
342 if (T.isArch64Bit() && (Features & Mips::FeatureN64)) {
343 // The EntrySize value of 1 seems strange since the records are neither
344 // 1-byte long nor fixed length but it matches the value GAS emits.
345 const MCSectionELF *Sec =
346 Context.getELFSection(".MIPS.options", ELF::SHT_MIPS_OPTIONS,
347 ELF::SHF_ALLOC | ELF::SHF_MIPS_NOSTRIP,
348 SectionKind::getMetadata(), 1, "");
349 MCA.getOrCreateSectionData(*Sec).setAlignment(8);
350 OS.SwitchSection(Sec);
352 OS.EmitIntValue(1, 1); // kind
353 OS.EmitIntValue(40, 1); // size
354 OS.EmitIntValue(0, 2); // section
355 OS.EmitIntValue(0, 4); // info
356 OS.EmitIntValue(0, 4); // ri_gprmask
357 OS.EmitIntValue(0, 4); // pad
358 OS.EmitIntValue(0, 4); // ri_cpr[0]mask
359 OS.EmitIntValue(0, 4); // ri_cpr[1]mask
360 OS.EmitIntValue(0, 4); // ri_cpr[2]mask
361 OS.EmitIntValue(0, 4); // ri_cpr[3]mask
362 OS.EmitIntValue(0, 8); // ri_gp_value
364 const MCSectionELF *Sec =
365 Context.getELFSection(".reginfo", ELF::SHT_MIPS_REGINFO, ELF::SHF_ALLOC,
366 SectionKind::getMetadata(), 24, "");
367 MCA.getOrCreateSectionData(*Sec).setAlignment(4);
368 OS.SwitchSection(Sec);
370 OS.EmitIntValue(0, 4); // ri_gprmask
371 OS.EmitIntValue(0, 4); // ri_cpr[0]mask
372 OS.EmitIntValue(0, 4); // ri_cpr[1]mask
373 OS.EmitIntValue(0, 4); // ri_cpr[2]mask
374 OS.EmitIntValue(0, 4); // ri_cpr[3]mask
375 OS.EmitIntValue(0, 4); // ri_gp_value
380 void MipsTargetELFStreamer::emitAssignment(MCSymbol *Symbol,
381 const MCExpr *Value) {
382 // If on rhs is micromips symbol then mark Symbol as microMips.
383 if (Value->getKind() != MCExpr::SymbolRef)
385 const MCSymbol &RhsSym =
386 static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
387 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(&RhsSym);
388 uint8_t Type = MCELF::GetType(Data);
389 if ((Type != ELF::STT_FUNC) ||
390 !(MCELF::getOther(Data) & (ELF::STO_MIPS_MICROMIPS >> 2)))
393 MCSymbolData &SymbolData = getStreamer().getOrCreateSymbolData(Symbol);
394 // The "other" values are stored in the last 6 bits of the second byte.
395 // The traditional defines for STO values assume the full byte and thus
396 // the shift to pack it.
397 MCELF::setOther(SymbolData, ELF::STO_MIPS_MICROMIPS >> 2);
400 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
401 return static_cast<MCELFStreamer &>(Streamer);
404 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
405 MicroMipsEnabled = true;
407 MCAssembler &MCA = getStreamer().getAssembler();
408 unsigned Flags = MCA.getELFHeaderEFlags();
409 Flags |= ELF::EF_MIPS_MICROMIPS;
410 MCA.setELFHeaderEFlags(Flags);
413 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
414 MicroMipsEnabled = false;
415 setCanHaveModuleDir(false);
418 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
419 MCAssembler &MCA = getStreamer().getAssembler();
420 unsigned Flags = MCA.getELFHeaderEFlags();
421 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
422 MCA.setELFHeaderEFlags(Flags);
423 setCanHaveModuleDir(false);
426 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
428 setCanHaveModuleDir(false);
431 void MipsTargetELFStreamer::emitDirectiveSetReorder() {
433 setCanHaveModuleDir(false);
436 void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
437 MCAssembler &MCA = getStreamer().getAssembler();
438 unsigned Flags = MCA.getELFHeaderEFlags();
439 Flags |= ELF::EF_MIPS_NOREORDER;
440 MCA.setELFHeaderEFlags(Flags);
441 setCanHaveModuleDir(false);
444 void MipsTargetELFStreamer::emitDirectiveSetMacro() {
446 setCanHaveModuleDir(false);
449 void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
451 setCanHaveModuleDir(false);
454 void MipsTargetELFStreamer::emitDirectiveSetAt() {
456 setCanHaveModuleDir(false);
459 void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
461 setCanHaveModuleDir(false);
464 void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
468 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
472 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
473 MCAssembler &MCA = getStreamer().getAssembler();
474 unsigned Flags = MCA.getELFHeaderEFlags();
475 Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
476 MCA.setELFHeaderEFlags(Flags);
479 void MipsTargetELFStreamer::emitDirectiveNaN2008() {
480 MCAssembler &MCA = getStreamer().getAssembler();
481 unsigned Flags = MCA.getELFHeaderEFlags();
482 Flags |= ELF::EF_MIPS_NAN2008;
483 MCA.setELFHeaderEFlags(Flags);
486 void MipsTargetELFStreamer::emitDirectiveNaNLegacy() {
487 MCAssembler &MCA = getStreamer().getAssembler();
488 unsigned Flags = MCA.getELFHeaderEFlags();
489 Flags &= ~ELF::EF_MIPS_NAN2008;
490 MCA.setELFHeaderEFlags(Flags);
493 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
494 MCAssembler &MCA = getStreamer().getAssembler();
495 unsigned Flags = MCA.getELFHeaderEFlags();
496 // This option overrides other PIC options like -KPIC.
498 Flags &= ~ELF::EF_MIPS_PIC;
499 MCA.setELFHeaderEFlags(Flags);
502 void MipsTargetELFStreamer::emitDirectiveOptionPic2() {
503 MCAssembler &MCA = getStreamer().getAssembler();
504 unsigned Flags = MCA.getELFHeaderEFlags();
506 // NOTE: We are following the GAS behaviour here which means the directive
507 // 'pic2' also sets the CPIC bit in the ELF header. This is different from
508 // what is stated in the SYSV ABI which consider the bits EF_MIPS_PIC and
509 // EF_MIPS_CPIC to be mutually exclusive.
510 Flags |= ELF::EF_MIPS_PIC | ELF::EF_MIPS_CPIC;
511 MCA.setELFHeaderEFlags(Flags);
514 void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
515 unsigned ReturnReg) {
519 void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
520 int CPUTopSavedRegOff) {
524 void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
525 int FPUTopSavedRegOff) {
529 void MipsTargetELFStreamer::emitDirectiveSetMips32R2() {
530 setCanHaveModuleDir(false);
533 void MipsTargetELFStreamer::emitDirectiveSetMips64() {
534 setCanHaveModuleDir(false);
537 void MipsTargetELFStreamer::emitDirectiveSetMips64R2() {
538 setCanHaveModuleDir(false);
541 void MipsTargetELFStreamer::emitDirectiveSetDsp() {
542 setCanHaveModuleDir(false);
545 void MipsTargetELFStreamer::emitDirectiveCpload(unsigned RegNo) {
547 // This directive expands to:
548 // lui $gp, %hi(_gp_disp)
549 // addui $gp, $gp, %lo(_gp_disp)
550 // addu $gp, $gp, $reg
551 // when support for position independent code is enabled.
552 if (!Pic || (isN32() || isN64()))
555 // There's a GNU extension controlled by -mno-shared that allows
556 // locally-binding symbols to be accessed using absolute addresses.
557 // This is currently not supported. When supported -mno-shared makes
558 // .cpload expand to:
559 // lui $gp, %hi(__gnu_local_gp)
560 // addiu $gp, $gp, %lo(__gnu_local_gp)
562 StringRef SymName("_gp_disp");
563 MCAssembler &MCA = getStreamer().getAssembler();
564 MCSymbol *GP_Disp = MCA.getContext().GetOrCreateSymbol(SymName);
565 MCA.getOrCreateSymbolData(*GP_Disp);
568 TmpInst.setOpcode(Mips::LUi);
569 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
570 const MCSymbolRefExpr *HiSym = MCSymbolRefExpr::Create(
571 "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_HI, MCA.getContext());
572 TmpInst.addOperand(MCOperand::CreateExpr(HiSym));
573 getStreamer().EmitInstruction(TmpInst, STI);
577 TmpInst.setOpcode(Mips::ADDiu);
578 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
579 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
580 const MCSymbolRefExpr *LoSym = MCSymbolRefExpr::Create(
581 "_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_LO, MCA.getContext());
582 TmpInst.addOperand(MCOperand::CreateExpr(LoSym));
583 getStreamer().EmitInstruction(TmpInst, STI);
587 TmpInst.setOpcode(Mips::ADDu);
588 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
589 TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
590 TmpInst.addOperand(MCOperand::CreateReg(RegNo));
591 getStreamer().EmitInstruction(TmpInst, STI);
593 setCanHaveModuleDir(false);
596 void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
600 // Only N32 and N64 emit anything for .cpsetup iff PIC is set.
601 if (!Pic || !(isN32() || isN64()))
604 MCAssembler &MCA = getStreamer().getAssembler();
607 // Either store the old $gp in a register or on the stack
609 // move $save, $gpreg
610 Inst.setOpcode(Mips::DADDu);
611 Inst.addOperand(MCOperand::CreateReg(RegOrOffset));
612 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
613 Inst.addOperand(MCOperand::CreateReg(Mips::ZERO));
615 // sd $gpreg, offset($sp)
616 Inst.setOpcode(Mips::SD);
617 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
618 Inst.addOperand(MCOperand::CreateReg(Mips::SP));
619 Inst.addOperand(MCOperand::CreateImm(RegOrOffset));
621 getStreamer().EmitInstruction(Inst, STI);
624 const MCSymbolRefExpr *HiExpr = MCSymbolRefExpr::Create(
625 Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_HI, MCA.getContext());
626 const MCSymbolRefExpr *LoExpr = MCSymbolRefExpr::Create(
627 Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_LO, MCA.getContext());
628 // lui $gp, %hi(%neg(%gp_rel(funcSym)))
629 Inst.setOpcode(Mips::LUi);
630 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
631 Inst.addOperand(MCOperand::CreateExpr(HiExpr));
632 getStreamer().EmitInstruction(Inst, STI);
635 // addiu $gp, $gp, %lo(%neg(%gp_rel(funcSym)))
636 Inst.setOpcode(Mips::ADDiu);
637 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
638 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
639 Inst.addOperand(MCOperand::CreateExpr(LoExpr));
640 getStreamer().EmitInstruction(Inst, STI);
643 // daddu $gp, $gp, $funcreg
644 Inst.setOpcode(Mips::DADDu);
645 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
646 Inst.addOperand(MCOperand::CreateReg(Mips::GP));
647 Inst.addOperand(MCOperand::CreateReg(RegNo));
648 getStreamer().EmitInstruction(Inst, STI);
650 setCanHaveModuleDir(false);
653 void MipsTargetELFStreamer::emitMipsAbiFlags() {
654 MCAssembler &MCA = getStreamer().getAssembler();
655 MCContext &Context = MCA.getContext();
656 MCStreamer &OS = getStreamer();
657 const MCSectionELF *Sec =
658 Context.getELFSection(".MIPS.abiflags", ELF::SHT_MIPS_ABIFLAGS,
659 ELF::SHF_ALLOC, SectionKind::getMetadata(), 24, "");
660 MCSectionData &ABIShndxSD = MCA.getOrCreateSectionData(*Sec);
661 ABIShndxSD.setAlignment(8);
662 OS.SwitchSection(Sec);
664 OS << ABIFlagsSection;
667 void MipsTargetELFStreamer::emitDirectiveModuleOddSPReg(bool Enabled,
669 MipsTargetStreamer::emitDirectiveModuleOddSPReg(Enabled, IsO32ABI);
671 ABIFlagsSection.OddSPReg = Enabled;