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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: Code review changes Created 4 years, 11 months 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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492 size_t MoveRelocatableFixup::emit(GlobalContext *Ctx, 492 size_t MoveRelocatableFixup::emit(GlobalContext *Ctx,
493 const Assembler &Asm) const { 493 const Assembler &Asm) const {
494 if (!BuildDefs::dump()) 494 if (!BuildDefs::dump())
495 return InstARM32::InstSize; 495 return InstARM32::InstSize;
496 Ostream &Str = Ctx->getStrEmit(); 496 Ostream &Str = Ctx->getStrEmit();
497 IValueT Inst = Asm.load<IValueT>(position()); 497 IValueT Inst = Asm.load<IValueT>(position());
498 Str << "\t" 498 Str << "\t"
499 "mov" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "w" : "t") << "\t" 499 "mov" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "w" : "t") << "\t"
500 << RegARM32::getRegName((Inst >> kRdShift) & 0xF) 500 << RegARM32::getRegName((Inst >> kRdShift) & 0xF)
501 << ", #:" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "lower" : "upper") 501 << ", #:" << (kind() == llvm::ELF::R_ARM_MOVW_ABS_NC ? "lower" : "upper")
502 << "16:" << symbol(Ctx) << "\t@ .word " 502 << "16:" << symbol(Ctx, &Asm) << "\t@ .word "
503 << llvm::format_hex_no_prefix(Inst, 8) << "\n"; 503 << llvm::format_hex_no_prefix(Inst, 8) << "\n";
504 return InstARM32::InstSize; 504 return InstARM32::InstSize;
505 } 505 }
506 506
507 MoveRelocatableFixup *AssemblerARM32::createMoveFixup(bool IsMovW, 507 MoveRelocatableFixup *AssemblerARM32::createMoveFixup(bool IsMovW,
508 const Constant *Value) { 508 const Constant *Value) {
509 MoveRelocatableFixup *F = 509 MoveRelocatableFixup *F =
510 new (allocate<MoveRelocatableFixup>()) MoveRelocatableFixup(); 510 new (allocate<MoveRelocatableFixup>()) MoveRelocatableFixup();
511 F->set_kind(IsMovW ? llvm::ELF::R_ARM_MOVW_ABS_NC 511 F->set_kind(IsMovW ? llvm::ELF::R_ARM_MOVW_ABS_NC
512 : llvm::ELF::R_ARM_MOVT_ABS); 512 : llvm::ELF::R_ARM_MOVT_ABS);
513 F->set_value(Value); 513 F->set_value(Value);
514 Buffer.installFixup(F); 514 Buffer.installFixup(F);
515 return F; 515 return F;
516 } 516 }
517 517
518 size_t BlRelocatableFixup::emit(GlobalContext *Ctx, 518 size_t BlRelocatableFixup::emit(GlobalContext *Ctx,
519 const Assembler &Asm) const { 519 const Assembler &Asm) const {
520 if (!BuildDefs::dump()) 520 if (!BuildDefs::dump())
521 return InstARM32::InstSize; 521 return InstARM32::InstSize;
522 Ostream &Str = Ctx->getStrEmit(); 522 Ostream &Str = Ctx->getStrEmit();
523 IValueT Inst = Asm.load<IValueT>(position()); 523 IValueT Inst = Asm.load<IValueT>(position());
524 Str << "\t" 524 Str << "\t"
525 "bl\t" << symbol(Ctx) << "\t@ .word " 525 "bl\t" << symbol(Ctx, &Asm) << "\t@ .word "
526 << llvm::format_hex_no_prefix(Inst, 8) << "\n"; 526 << llvm::format_hex_no_prefix(Inst, 8) << "\n";
527 return InstARM32::InstSize; 527 return InstARM32::InstSize;
528 } 528 }
529 529
530 void AssemblerARM32::padWithNop(intptr_t Padding) { 530 void AssemblerARM32::padWithNop(intptr_t Padding) {
531 constexpr intptr_t InstWidth = sizeof(IValueT); 531 constexpr intptr_t InstWidth = sizeof(IValueT);
532 assert(Padding % InstWidth == 0 && 532 assert(Padding % InstWidth == 0 &&
533 "Padding not multiple of instruction size"); 533 "Padding not multiple of instruction size");
534 for (intptr_t i = 0; i < Padding; i += InstWidth) 534 for (intptr_t i = 0; i < Padding; i += InstWidth)
535 nop(); 535 nop();
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2051 // cccc11010D101101dddd1010iiiiiiii where cccc=Cond, ddddD=BaseReg, and 2051 // cccc11010D101101dddd1010iiiiiiii where cccc=Cond, ddddD=BaseReg, and
2052 // iiiiiiii=NumConsecRegs. 2052 // iiiiiiii=NumConsecRegs.
2053 constexpr const char *VpushName = "vpush"; 2053 constexpr const char *VpushName = "vpush";
2054 constexpr IValueT VpushOpcode = 2054 constexpr IValueT VpushOpcode =
2055 B27 | B26 | B24 | B21 | B19 | B18 | B16 | B11 | B9; 2055 B27 | B26 | B24 | B21 | B19 | B18 | B16 | B11 | B9;
2056 emitVStackOp(Cond, VpushOpcode, OpBaseReg, NumConsecRegs, VpushName); 2056 emitVStackOp(Cond, VpushOpcode, OpBaseReg, NumConsecRegs, VpushName);
2057 } 2057 }
2058 2058
2059 } // end of namespace ARM32 2059 } // end of namespace ARM32
2060 } // end of namespace Ice 2060 } // end of namespace Ice
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