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Side by Side Diff: src/IceAssemblerARM32.cpp

Issue 1506653002: Subzero: Add Non-SFI support for x86-32. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Fill in part of the lit test Created 5 years ago
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1 //===- subzero/src/IceAssemblerARM32.cpp - Assembler for ARM32 --*- C++ -*-===// 1 //===- subzero/src/IceAssemblerARM32.cpp - Assembler for ARM32 --*- C++ -*-===//
2 // 2 //
3 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 3 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
4 // for details. All rights reserved. Use of this source code is governed by a 4 // for details. All rights reserved. Use of this source code is governed by a
5 // BSD-style license that can be found in the LICENSE file. 5 // BSD-style license that can be found in the LICENSE file.
6 // 6 //
7 // Modified by the Subzero authors. 7 // Modified by the Subzero authors.
8 // 8 //
9 //===----------------------------------------------------------------------===// 9 //===----------------------------------------------------------------------===//
10 // 10 //
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483 size_t MoveRelocatableFixup::emit(GlobalContext *Ctx, 483 size_t MoveRelocatableFixup::emit(GlobalContext *Ctx,
484 const Assembler &Asm) const { 484 const Assembler &Asm) const {
485 if (!BuildDefs::dump()) 485 if (!BuildDefs::dump())
486 return InstARM32::InstSize; 486 return InstARM32::InstSize;
487 Ostream &Str = Ctx->getStrEmit(); 487 Ostream &Str = Ctx->getStrEmit();
488 IValueT Inst = Asm.load<IValueT>(position()); 488 IValueT Inst = Asm.load<IValueT>(position());
489 Str << "\t" 489 Str << "\t"
490 "mov" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "w" : "t") << "\t" 490 "mov" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "w" : "t") << "\t"
491 << RegARM32::RegNames[(Inst >> kRdShift) & 0xF] 491 << RegARM32::RegNames[(Inst >> kRdShift) & 0xF]
492 << ", #:" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "lower" : "upper") 492 << ", #:" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "lower" : "upper")
493 << "16:" << symbol(Ctx) << "\t@ .word " 493 << "16:" << symbol(Ctx, &Asm) << "\t@ .word "
494 << llvm::format_hex_no_prefix(Inst, 8) << "\n"; 494 << llvm::format_hex_no_prefix(Inst, 8) << "\n";
495 return InstARM32::InstSize; 495 return InstARM32::InstSize;
496 } 496 }
497 497
498 MoveRelocatableFixup *AssemblerARM32::createMoveFixup(bool IsMovW, 498 MoveRelocatableFixup *AssemblerARM32::createMoveFixup(bool IsMovW,
499 const Constant *Value) { 499 const Constant *Value) {
500 MoveRelocatableFixup *F = 500 MoveRelocatableFixup *F =
501 new (allocate<MoveRelocatableFixup>()) MoveRelocatableFixup(); 501 new (allocate<MoveRelocatableFixup>()) MoveRelocatableFixup();
502 F->set_kind(IsMovW ? llvm::ELF::R_ARM_MOVW_ABS_NC 502 F->set_kind(IsMovW ? llvm::ELF::R_ARM_MOVW_ABS_NC
503 : llvm::ELF::R_ARM_MOVT_ABS); 503 : llvm::ELF::R_ARM_MOVT_ABS);
504 F->set_value(Value); 504 F->set_value(Value);
505 Buffer.installFixup(F); 505 Buffer.installFixup(F);
506 return F; 506 return F;
507 } 507 }
508 508
509 size_t BlRelocatableFixup::emit(GlobalContext *Ctx, 509 size_t BlRelocatableFixup::emit(GlobalContext *Ctx,
510 const Assembler &Asm) const { 510 const Assembler &Asm) const {
511 if (!BuildDefs::dump()) 511 if (!BuildDefs::dump())
512 return InstARM32::InstSize; 512 return InstARM32::InstSize;
513 Ostream &Str = Ctx->getStrEmit(); 513 Ostream &Str = Ctx->getStrEmit();
514 IValueT Inst = Asm.load<IValueT>(position()); 514 IValueT Inst = Asm.load<IValueT>(position());
515 Str << "\t" 515 Str << "\t"
516 "bl\t" << symbol(Ctx) << "\t@ .word " 516 "bl\t" << symbol(Ctx, &Asm) << "\t@ .word "
517 << llvm::format_hex_no_prefix(Inst, 8) << "\n"; 517 << llvm::format_hex_no_prefix(Inst, 8) << "\n";
518 return InstARM32::InstSize; 518 return InstARM32::InstSize;
519 } 519 }
520 520
521 void AssemblerARM32::padWithNop(intptr_t Padding) { 521 void AssemblerARM32::padWithNop(intptr_t Padding) {
522 constexpr intptr_t InstWidth = sizeof(IValueT); 522 constexpr intptr_t InstWidth = sizeof(IValueT);
523 assert(Padding % InstWidth == 0 && 523 assert(Padding % InstWidth == 0 &&
524 "Padding not multiple of instruction size"); 524 "Padding not multiple of instruction size");
525 for (intptr_t i = 0; i < Padding; i += InstWidth) 525 for (intptr_t i = 0; i < Padding; i += InstWidth)
526 nop(); 526 nop();
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1956 1956
1957 void AssemblerARM32::uxt(const Operand *OpRd, const Operand *OpSrc0, 1957 void AssemblerARM32::uxt(const Operand *OpRd, const Operand *OpSrc0,
1958 CondARM32::Cond Cond) { 1958 CondARM32::Cond Cond) {
1959 constexpr const char *UxtName = "uxt"; 1959 constexpr const char *UxtName = "uxt";
1960 constexpr IValueT UxtOpcode = B26 | B25 | B23 | B22 | B21; 1960 constexpr IValueT UxtOpcode = B26 | B25 | B23 | B22 | B21;
1961 emitSignExtend(Cond, UxtOpcode, OpRd, OpSrc0, UxtName); 1961 emitSignExtend(Cond, UxtOpcode, OpRd, OpSrc0, UxtName);
1962 } 1962 }
1963 1963
1964 } // end of namespace ARM32 1964 } // end of namespace ARM32
1965 } // end of namespace Ice 1965 } // end of namespace Ice
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