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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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40 | 40 |
41 namespace v8 { | 41 namespace v8 { |
42 namespace internal { | 42 namespace internal { |
43 | 43 |
44 | 44 |
45 #define __ ACCESS_MASM(masm_) | 45 #define __ ACCESS_MASM(masm_) |
46 | 46 |
47 | 47 |
48 class JumpPatchSite BASE_EMBEDDED { | 48 class JumpPatchSite BASE_EMBEDDED { |
49 public: | 49 public: |
50 explicit JumpPatchSite(MacroAssembler* masm) | 50 explicit JumpPatchSite(MacroAssembler* masm) : masm_(masm) { |
51 : masm_(masm) { | |
52 #ifdef DEBUG | 51 #ifdef DEBUG |
53 info_emitted_ = false; | 52 info_emitted_ = false; |
54 #endif | 53 #endif |
55 } | 54 } |
56 | 55 |
57 ~JumpPatchSite() { | 56 ~JumpPatchSite() { |
58 ASSERT(patch_site_.is_bound() == info_emitted_); | 57 ASSERT(patch_site_.is_bound() == info_emitted_); |
59 } | 58 } |
60 | 59 |
61 void EmitJumpIfNotSmi(Register reg, NearLabel* target) { | 60 void EmitJumpIfNotSmi(Register reg, NearLabel* target) { |
62 __ test(reg, Immediate(kSmiTagMask)); | 61 __ test(reg, Immediate(kSmiTagMask)); |
63 EmitJump(not_carry, target); // Always taken before patched. | 62 EmitJump(not_carry, target); // Always taken before patched. |
64 } | 63 } |
65 | 64 |
66 void EmitJumpIfSmi(Register reg, NearLabel* target) { | 65 void EmitJumpIfSmi(Register reg, NearLabel* target) { |
67 __ test(reg, Immediate(kSmiTagMask)); | 66 __ test(reg, Immediate(kSmiTagMask)); |
68 EmitJump(carry, target); // Never taken before patched. | 67 EmitJump(carry, target); // Never taken before patched. |
69 } | 68 } |
70 | 69 |
71 void EmitPatchInfo() { | 70 void EmitPatchInfo() { |
72 int delta_to_patch_site = masm_->SizeOfCodeGeneratedSince(&patch_site_); | 71 int delta_to_patch_site = masm_->SizeOfCodeGeneratedSince(&patch_site_); |
73 ASSERT(is_int8(delta_to_patch_site)); | 72 ASSERT(is_int8(delta_to_patch_site)); |
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4399 // And return. | 4398 // And return. |
4400 __ ret(0); | 4399 __ ret(0); |
4401 } | 4400 } |
4402 | 4401 |
4403 | 4402 |
4404 #undef __ | 4403 #undef __ |
4405 | 4404 |
4406 } } // namespace v8::internal | 4405 } } // namespace v8::internal |
4407 | 4406 |
4408 #endif // V8_TARGET_ARCH_IA32 | 4407 #endif // V8_TARGET_ARCH_IA32 |
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