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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
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1978 } | 1978 } |
1979 } | 1979 } |
1980 | 1980 |
1981 | 1981 |
1982 void Assembler::PopRegister(Register r) { | 1982 void Assembler::PopRegister(Register r) { |
1983 popl(r); | 1983 popl(r); |
1984 } | 1984 } |
1985 | 1985 |
1986 | 1986 |
1987 void Assembler::AddImmediate(Register reg, const Immediate& imm) { | 1987 void Assembler::AddImmediate(Register reg, const Immediate& imm) { |
1988 intptr_t value = imm.value(); | 1988 const intptr_t value = imm.value(); |
1989 if (value > 0) { | 1989 if (value == 0) { |
| 1990 return; |
| 1991 } |
| 1992 if ((value > 0) || (value == kMinInt32)) { |
1990 if (value == 1) { | 1993 if (value == 1) { |
1991 incl(reg); | 1994 incl(reg); |
1992 } else if (value != 0) { | 1995 } else { |
1993 addl(reg, imm); | 1996 addl(reg, imm); |
1994 } | 1997 } |
1995 } else if (value < 0) { | 1998 } else { |
1996 value = -value; | 1999 SubImmediate(reg, Immediate(-value)); |
1997 if (value == 1) { | |
1998 decl(reg); | |
1999 } else if (value != 0) { | |
2000 subl(reg, Immediate(value)); | |
2001 } | |
2002 } | 2000 } |
2003 } | 2001 } |
2004 | 2002 |
| 2003 |
| 2004 void Assembler::SubImmediate(Register reg, const Immediate& imm) { |
| 2005 const intptr_t value = imm.value(); |
| 2006 if (value == 0) { |
| 2007 return; |
| 2008 } |
| 2009 if ((value > 0) || (value == kMinInt32)) { |
| 2010 if (value == 1) { |
| 2011 decl(reg); |
| 2012 } else { |
| 2013 subl(reg, imm); |
| 2014 } |
| 2015 } else { |
| 2016 AddImmediate(reg, Immediate(-value)); |
| 2017 } |
| 2018 } |
| 2019 |
2005 | 2020 |
2006 void Assembler::Drop(intptr_t stack_elements) { | 2021 void Assembler::Drop(intptr_t stack_elements) { |
2007 ASSERT(stack_elements >= 0); | 2022 ASSERT(stack_elements >= 0); |
2008 if (stack_elements > 0) { | 2023 if (stack_elements > 0) { |
2009 addl(ESP, Immediate(stack_elements * kWordSize)); | 2024 addl(ESP, Immediate(stack_elements * kWordSize)); |
2010 } | 2025 } |
2011 } | 2026 } |
2012 | 2027 |
2013 | 2028 |
2014 void Assembler::LoadObject(Register dst, const Object& object) { | 2029 void Assembler::LoadObject(Register dst, const Object& object) { |
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2659 | 2674 |
2660 const char* Assembler::FpuRegisterName(FpuRegister reg) { | 2675 const char* Assembler::FpuRegisterName(FpuRegister reg) { |
2661 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); | 2676 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); |
2662 return xmm_reg_names[reg]; | 2677 return xmm_reg_names[reg]; |
2663 } | 2678 } |
2664 | 2679 |
2665 | 2680 |
2666 } // namespace dart | 2681 } // namespace dart |
2667 | 2682 |
2668 #endif // defined TARGET_ARCH_IA32 | 2683 #endif // defined TARGET_ARCH_IA32 |
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