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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_X87 | 5 #if V8_TARGET_ARCH_X87 |
6 | 6 |
7 #include "src/code-stubs.h" | 7 #include "src/code-stubs.h" |
8 #include "src/api-arguments.h" | 8 #include "src/api-arguments.h" |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/bootstrapper.h" | 10 #include "src/bootstrapper.h" |
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2164 // ebx: instance type | 2164 // ebx: instance type |
2165 // ecx: sub string length (smi) | 2165 // ecx: sub string length (smi) |
2166 // edx: from index (smi) | 2166 // edx: from index (smi) |
2167 StringCharAtGenerator generator(eax, edx, ecx, eax, &runtime, &runtime, | 2167 StringCharAtGenerator generator(eax, edx, ecx, eax, &runtime, &runtime, |
2168 &runtime, RECEIVER_IS_STRING); | 2168 &runtime, RECEIVER_IS_STRING); |
2169 generator.GenerateFast(masm); | 2169 generator.GenerateFast(masm); |
2170 __ ret(3 * kPointerSize); | 2170 __ ret(3 * kPointerSize); |
2171 generator.SkipSlow(masm, &runtime); | 2171 generator.SkipSlow(masm, &runtime); |
2172 } | 2172 } |
2173 | 2173 |
2174 | |
2175 void ToNumberStub::Generate(MacroAssembler* masm) { | |
2176 // The ToNumber stub takes one argument in eax. | |
2177 Label not_smi; | |
2178 __ JumpIfNotSmi(eax, ¬_smi, Label::kNear); | |
2179 __ Ret(); | |
2180 __ bind(¬_smi); | |
2181 | |
2182 Label not_heap_number; | |
2183 __ CompareMap(eax, masm->isolate()->factory()->heap_number_map()); | |
2184 __ j(not_equal, ¬_heap_number, Label::kNear); | |
2185 __ Ret(); | |
2186 __ bind(¬_heap_number); | |
2187 | |
2188 NonNumberToNumberStub stub(masm->isolate()); | |
2189 __ TailCallStub(&stub); | |
2190 } | |
2191 | |
2192 void NonNumberToNumberStub::Generate(MacroAssembler* masm) { | |
2193 // The NonNumberToNumber stub takes one argument in eax. | |
2194 __ AssertNotNumber(eax); | |
2195 | |
2196 Label not_string; | |
2197 __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edi); | |
2198 // eax: object | |
2199 // edi: object map | |
2200 __ j(above_equal, ¬_string, Label::kNear); | |
2201 __ Jump(isolate()->builtins()->StringToNumber(), RelocInfo::CODE_TARGET); | |
2202 __ bind(¬_string); | |
2203 | |
2204 Label not_oddball; | |
2205 __ CmpInstanceType(edi, ODDBALL_TYPE); | |
2206 __ j(not_equal, ¬_oddball, Label::kNear); | |
2207 __ mov(eax, FieldOperand(eax, Oddball::kToNumberOffset)); | |
2208 __ Ret(); | |
2209 __ bind(¬_oddball); | |
2210 | |
2211 __ pop(ecx); // Pop return address. | |
2212 __ push(eax); // Push argument. | |
2213 __ push(ecx); // Push return address. | |
2214 __ TailCallRuntime(Runtime::kToNumber); | |
2215 } | |
2216 | |
2217 void ToStringStub::Generate(MacroAssembler* masm) { | 2174 void ToStringStub::Generate(MacroAssembler* masm) { |
2218 // The ToString stub takes one argument in eax. | 2175 // The ToString stub takes one argument in eax. |
2219 Label is_number; | 2176 Label is_number; |
2220 __ JumpIfSmi(eax, &is_number, Label::kNear); | 2177 __ JumpIfSmi(eax, &is_number, Label::kNear); |
2221 | 2178 |
2222 Label not_string; | 2179 Label not_string; |
2223 __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edi); | 2180 __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edi); |
2224 // eax: receiver | 2181 // eax: receiver |
2225 // edi: receiver map | 2182 // edi: receiver map |
2226 __ j(above_equal, ¬_string, Label::kNear); | 2183 __ j(above_equal, ¬_string, Label::kNear); |
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5370 kStackUnwindSpace, nullptr, return_value_operand, | 5327 kStackUnwindSpace, nullptr, return_value_operand, |
5371 NULL); | 5328 NULL); |
5372 } | 5329 } |
5373 | 5330 |
5374 #undef __ | 5331 #undef __ |
5375 | 5332 |
5376 } // namespace internal | 5333 } // namespace internal |
5377 } // namespace v8 | 5334 } // namespace v8 |
5378 | 5335 |
5379 #endif // V8_TARGET_ARCH_X87 | 5336 #endif // V8_TARGET_ARCH_X87 |
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