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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 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
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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1909 | 1909 |
1910 // Call the native; it returns -1 (less), 0 (equal), or 1 (greater) | 1910 // Call the native; it returns -1 (less), 0 (equal), or 1 (greater) |
1911 // tagged as a small integer. | 1911 // tagged as a small integer. |
1912 __ InvokeBuiltin(builtin, JUMP_FUNCTION); | 1912 __ InvokeBuiltin(builtin, JUMP_FUNCTION); |
1913 | 1913 |
1914 __ bind(&miss); | 1914 __ bind(&miss); |
1915 GenerateMiss(masm); | 1915 GenerateMiss(masm); |
1916 } | 1916 } |
1917 | 1917 |
1918 | 1918 |
1919 static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub) { | 1919 static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub, |
| 1920 bool is_super) { |
1920 // eax : number of arguments to the construct function | 1921 // eax : number of arguments to the construct function |
1921 // ebx : Feedback vector | 1922 // ebx : feedback vector |
1922 // edx : slot in feedback vector (Smi) | 1923 // edx : slot in feedback vector (Smi) |
1923 // edi : the function to call | 1924 // edi : the function to call |
1924 FrameScope scope(masm, StackFrame::INTERNAL); | 1925 // esp[0]: original receiver (for IsSuperConstructorCall) |
| 1926 if (is_super) { |
| 1927 __ pop(ecx); |
| 1928 } |
1925 | 1929 |
1926 // Number-of-arguments register must be smi-tagged to call out. | 1930 { |
1927 __ SmiTag(eax); | 1931 FrameScope scope(masm, StackFrame::INTERNAL); |
1928 __ push(eax); | |
1929 __ push(edi); | |
1930 __ push(edx); | |
1931 __ push(ebx); | |
1932 | 1932 |
1933 __ CallStub(stub); | 1933 // Number-of-arguments register must be smi-tagged to call out. |
| 1934 __ SmiTag(eax); |
| 1935 __ push(eax); |
| 1936 __ push(edi); |
| 1937 __ push(edx); |
| 1938 __ push(ebx); |
| 1939 if (is_super) { |
| 1940 __ push(ecx); |
| 1941 } |
1934 | 1942 |
1935 __ pop(ebx); | 1943 __ CallStub(stub); |
1936 __ pop(edx); | 1944 |
1937 __ pop(edi); | 1945 if (is_super) { |
1938 __ pop(eax); | 1946 __ pop(ecx); |
1939 __ SmiUntag(eax); | 1947 } |
| 1948 __ pop(ebx); |
| 1949 __ pop(edx); |
| 1950 __ pop(edi); |
| 1951 __ pop(eax); |
| 1952 __ SmiUntag(eax); |
| 1953 } |
| 1954 |
| 1955 if (is_super) { |
| 1956 __ push(ecx); |
| 1957 } |
1940 } | 1958 } |
1941 | 1959 |
1942 | 1960 |
1943 static void GenerateRecordCallTarget(MacroAssembler* masm) { | 1961 static void GenerateRecordCallTarget(MacroAssembler* masm, bool is_super) { |
1944 // Cache the called function in a feedback vector slot. Cache states | 1962 // Cache the called function in a feedback vector slot. Cache states |
1945 // are uninitialized, monomorphic (indicated by a JSFunction), and | 1963 // are uninitialized, monomorphic (indicated by a JSFunction), and |
1946 // megamorphic. | 1964 // megamorphic. |
1947 // eax : number of arguments to the construct function | 1965 // eax : number of arguments to the construct function |
1948 // ebx : Feedback vector | 1966 // ebx : feedback vector |
1949 // edx : slot in feedback vector (Smi) | 1967 // edx : slot in feedback vector (Smi) |
1950 // edi : the function to call | 1968 // edi : the function to call |
| 1969 // esp[0]: original receiver (for IsSuperConstructorCall) |
1951 Isolate* isolate = masm->isolate(); | 1970 Isolate* isolate = masm->isolate(); |
1952 Label initialize, done, miss, megamorphic, not_array_function; | 1971 Label initialize, done, miss, megamorphic, not_array_function; |
1953 | 1972 |
1954 // Load the cache state into ecx. | 1973 // Load the cache state into ecx. |
1955 __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size, | 1974 __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size, |
1956 FixedArray::kHeaderSize)); | 1975 FixedArray::kHeaderSize)); |
1957 | 1976 |
1958 // A monomorphic cache hit or an already megamorphic state: invoke the | 1977 // A monomorphic cache hit or an already megamorphic state: invoke the |
1959 // function without changing the state. | 1978 // function without changing the state. |
1960 // We don't know if ecx is a WeakCell or a Symbol, but it's harmless to read | 1979 // We don't know if ecx is a WeakCell or a Symbol, but it's harmless to read |
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2009 if (!FLAG_pretenuring_call_new) { | 2028 if (!FLAG_pretenuring_call_new) { |
2010 // Make sure the function is the Array() function | 2029 // Make sure the function is the Array() function |
2011 __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx); | 2030 __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx); |
2012 __ cmp(edi, ecx); | 2031 __ cmp(edi, ecx); |
2013 __ j(not_equal, ¬_array_function); | 2032 __ j(not_equal, ¬_array_function); |
2014 | 2033 |
2015 // The target function is the Array constructor, | 2034 // The target function is the Array constructor, |
2016 // Create an AllocationSite if we don't already have it, store it in the | 2035 // Create an AllocationSite if we don't already have it, store it in the |
2017 // slot. | 2036 // slot. |
2018 CreateAllocationSiteStub create_stub(isolate); | 2037 CreateAllocationSiteStub create_stub(isolate); |
2019 CallStubInRecordCallTarget(masm, &create_stub); | 2038 CallStubInRecordCallTarget(masm, &create_stub, is_super); |
2020 __ jmp(&done); | 2039 __ jmp(&done); |
2021 | 2040 |
2022 __ bind(¬_array_function); | 2041 __ bind(¬_array_function); |
2023 } | 2042 } |
2024 | 2043 |
2025 CreateWeakCellStub create_stub(isolate); | 2044 CreateWeakCellStub create_stub(isolate); |
2026 CallStubInRecordCallTarget(masm, &create_stub); | 2045 CallStubInRecordCallTarget(masm, &create_stub, is_super); |
2027 __ bind(&done); | 2046 __ bind(&done); |
2028 } | 2047 } |
2029 | 2048 |
2030 | 2049 |
2031 static void EmitContinueIfStrictOrNative(MacroAssembler* masm, Label* cont) { | 2050 static void EmitContinueIfStrictOrNative(MacroAssembler* masm, Label* cont) { |
2032 // Do not transform the receiver for strict mode functions. | 2051 // Do not transform the receiver for strict mode functions. |
2033 __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); | 2052 __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
2034 __ test_b(FieldOperand(ecx, SharedFunctionInfo::kStrictModeByteOffset), | 2053 __ test_b(FieldOperand(ecx, SharedFunctionInfo::kStrictModeByteOffset), |
2035 1 << SharedFunctionInfo::kStrictModeBitWithinByte); | 2054 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
2036 __ j(not_equal, cont); | 2055 __ j(not_equal, cont); |
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2156 __ push(ecx); | 2175 __ push(ecx); |
2157 } | 2176 } |
2158 | 2177 |
2159 // Check that function is not a smi. | 2178 // Check that function is not a smi. |
2160 __ JumpIfSmi(edi, &non_function_call); | 2179 __ JumpIfSmi(edi, &non_function_call); |
2161 // Check that function is a JSFunction. | 2180 // Check that function is a JSFunction. |
2162 __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); | 2181 __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); |
2163 __ j(not_equal, &slow); | 2182 __ j(not_equal, &slow); |
2164 | 2183 |
2165 if (RecordCallTarget()) { | 2184 if (RecordCallTarget()) { |
2166 GenerateRecordCallTarget(masm); | 2185 GenerateRecordCallTarget(masm, IsSuperConstructorCall()); |
2167 | 2186 |
2168 if (FLAG_pretenuring_call_new) { | 2187 if (FLAG_pretenuring_call_new) { |
2169 // Put the AllocationSite from the feedback vector into ebx. | 2188 // Put the AllocationSite from the feedback vector into ebx. |
2170 // By adding kPointerSize we encode that we know the AllocationSite | 2189 // By adding kPointerSize we encode that we know the AllocationSite |
2171 // entry is at the feedback vector slot given by edx + 1. | 2190 // entry is at the feedback vector slot given by edx + 1. |
2172 __ mov(ebx, FieldOperand(ebx, edx, times_half_pointer_size, | 2191 __ mov(ebx, FieldOperand(ebx, edx, times_half_pointer_size, |
2173 FixedArray::kHeaderSize + kPointerSize)); | 2192 FixedArray::kHeaderSize + kPointerSize)); |
2174 } else { | 2193 } else { |
2175 Label feedback_register_initialized; | 2194 Label feedback_register_initialized; |
2176 // Put the AllocationSite from the feedback vector into ebx, or undefined. | 2195 // Put the AllocationSite from the feedback vector into ebx, or undefined. |
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2198 Register jmp_reg = ecx; | 2217 Register jmp_reg = ecx; |
2199 __ mov(jmp_reg, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); | 2218 __ mov(jmp_reg, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
2200 __ mov(jmp_reg, FieldOperand(jmp_reg, | 2219 __ mov(jmp_reg, FieldOperand(jmp_reg, |
2201 SharedFunctionInfo::kConstructStubOffset)); | 2220 SharedFunctionInfo::kConstructStubOffset)); |
2202 __ lea(jmp_reg, FieldOperand(jmp_reg, Code::kHeaderSize)); | 2221 __ lea(jmp_reg, FieldOperand(jmp_reg, Code::kHeaderSize)); |
2203 __ jmp(jmp_reg); | 2222 __ jmp(jmp_reg); |
2204 | 2223 |
2205 // edi: called object | 2224 // edi: called object |
2206 // eax: number of arguments | 2225 // eax: number of arguments |
2207 // ecx: object map | 2226 // ecx: object map |
2208 // esp[0]: original receiver | 2227 // esp[0]: original receiver (for IsSuperConstructorCall) |
2209 Label do_call; | 2228 Label do_call; |
2210 __ bind(&slow); | 2229 __ bind(&slow); |
2211 __ CmpInstanceType(ecx, JS_FUNCTION_PROXY_TYPE); | 2230 __ CmpInstanceType(ecx, JS_FUNCTION_PROXY_TYPE); |
2212 __ j(not_equal, &non_function_call); | 2231 __ j(not_equal, &non_function_call); |
2213 __ GetBuiltinEntry(edx, Builtins::CALL_FUNCTION_PROXY_AS_CONSTRUCTOR); | 2232 __ GetBuiltinEntry(edx, Builtins::CALL_FUNCTION_PROXY_AS_CONSTRUCTOR); |
2214 __ jmp(&do_call); | 2233 __ jmp(&do_call); |
2215 | 2234 |
2216 __ bind(&non_function_call); | 2235 __ bind(&non_function_call); |
2217 __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); | 2236 __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); |
2218 __ bind(&do_call); | 2237 __ bind(&do_call); |
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5485 Operand(ebp, 7 * kPointerSize), NULL); | 5504 Operand(ebp, 7 * kPointerSize), NULL); |
5486 } | 5505 } |
5487 | 5506 |
5488 | 5507 |
5489 #undef __ | 5508 #undef __ |
5490 | 5509 |
5491 } // namespace internal | 5510 } // namespace internal |
5492 } // namespace v8 | 5511 } // namespace v8 |
5493 | 5512 |
5494 #endif // V8_TARGET_ARCH_IA32 | 5513 #endif // V8_TARGET_ARCH_IA32 |
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