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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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810 // r2: preserved | 810 // r2: preserved |
811 | 811 |
812 // Drop the execution stack down to the frame pointer and restore | 812 // Drop the execution stack down to the frame pointer and restore |
813 // the caller frame pointer and return address. | 813 // the caller frame pointer and return address. |
814 mov(sp, fp); | 814 mov(sp, fp); |
815 ldm(ia_w, sp, fp.bit() | lr.bit()); | 815 ldm(ia_w, sp, fp.bit() | lr.bit()); |
816 } | 816 } |
817 | 817 |
818 | 818 |
819 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { | 819 void MacroAssembler::EnterExitFrame(bool save_doubles, int stack_space) { |
820 // Setup the frame structure on the stack. | 820 // Set up the frame structure on the stack. |
821 ASSERT_EQ(2 * kPointerSize, ExitFrameConstants::kCallerSPDisplacement); | 821 ASSERT_EQ(2 * kPointerSize, ExitFrameConstants::kCallerSPDisplacement); |
822 ASSERT_EQ(1 * kPointerSize, ExitFrameConstants::kCallerPCOffset); | 822 ASSERT_EQ(1 * kPointerSize, ExitFrameConstants::kCallerPCOffset); |
823 ASSERT_EQ(0 * kPointerSize, ExitFrameConstants::kCallerFPOffset); | 823 ASSERT_EQ(0 * kPointerSize, ExitFrameConstants::kCallerFPOffset); |
824 Push(lr, fp); | 824 Push(lr, fp); |
825 mov(fp, Operand(sp)); // Setup new frame pointer. | 825 mov(fp, Operand(sp)); // Set up new frame pointer. |
826 // Reserve room for saved entry sp and code object. | 826 // Reserve room for saved entry sp and code object. |
827 sub(sp, sp, Operand(2 * kPointerSize)); | 827 sub(sp, sp, Operand(2 * kPointerSize)); |
828 if (emit_debug_code()) { | 828 if (emit_debug_code()) { |
829 mov(ip, Operand(0)); | 829 mov(ip, Operand(0)); |
830 str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); | 830 str(ip, MemOperand(fp, ExitFrameConstants::kSPOffset)); |
831 } | 831 } |
832 mov(ip, Operand(CodeObject())); | 832 mov(ip, Operand(CodeObject())); |
833 str(ip, MemOperand(fp, ExitFrameConstants::kCodeOffset)); | 833 str(ip, MemOperand(fp, ExitFrameConstants::kCodeOffset)); |
834 | 834 |
835 // Save the frame pointer and the context in top. | 835 // Save the frame pointer and the context in top. |
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3666 void CodePatcher::EmitCondition(Condition cond) { | 3666 void CodePatcher::EmitCondition(Condition cond) { |
3667 Instr instr = Assembler::instr_at(masm_.pc_); | 3667 Instr instr = Assembler::instr_at(masm_.pc_); |
3668 instr = (instr & ~kCondMask) | cond; | 3668 instr = (instr & ~kCondMask) | cond; |
3669 masm_.emit(instr); | 3669 masm_.emit(instr); |
3670 } | 3670 } |
3671 | 3671 |
3672 | 3672 |
3673 } } // namespace v8::internal | 3673 } } // namespace v8::internal |
3674 | 3674 |
3675 #endif // V8_TARGET_ARCH_ARM | 3675 #endif // V8_TARGET_ARCH_ARM |
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