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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/compiler.h" | 9 #include "vm/compiler.h" |
10 #include "vm/dart_entry.h" | 10 #include "vm/dart_entry.h" |
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1854 __ pushl(raw_null); // Room for result. | 1854 __ pushl(raw_null); // Room for result. |
1855 __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0); | 1855 __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0); |
1856 __ popl(EAX); // Address of original stub. | 1856 __ popl(EAX); // Address of original stub. |
1857 __ popl(EDX); // Restore arguments. | 1857 __ popl(EDX); // Restore arguments. |
1858 __ popl(ECX); | 1858 __ popl(ECX); |
1859 __ LeaveFrame(); | 1859 __ LeaveFrame(); |
1860 __ jmp(EAX); // Jump to original stub. | 1860 __ jmp(EAX); // Jump to original stub. |
1861 } | 1861 } |
1862 | 1862 |
1863 | 1863 |
1864 // ECX: Inline cache data array. | |
1865 // TOS(0): return address (Dart code). | |
1866 void StubCode::GenerateBreakpointDynamicStub(Assembler* assembler) { | |
1867 // Create a stub frame as we are pushing some objects on the stack before | |
1868 // calling into the runtime. | |
1869 __ EnterStubFrame(); | |
1870 __ pushl(ECX); | |
1871 __ CallRuntime(kBreakpointDynamicHandlerRuntimeEntry, 0); | |
1872 __ popl(ECX); | |
1873 __ LeaveFrame(); | |
1874 | |
1875 // Find out which dispatch stub to call. | |
1876 Label test_two, test_three, test_four; | |
1877 __ movl(EBX, FieldAddress(ECX, ICData::num_args_tested_offset())); | |
1878 __ cmpl(EBX, Immediate(1)); | |
1879 __ j(NOT_EQUAL, &test_two, Assembler::kNearJump); | |
1880 __ jmp(&StubCode::OneArgCheckInlineCacheLabel()); | |
1881 __ Bind(&test_two); | |
1882 __ cmpl(EBX, Immediate(2)); | |
1883 __ j(NOT_EQUAL, &test_three, Assembler::kNearJump); | |
1884 __ jmp(&StubCode::TwoArgsCheckInlineCacheLabel()); | |
1885 __ Bind(&test_three); | |
1886 __ cmpl(EBX, Immediate(3)); | |
1887 __ j(NOT_EQUAL, &test_four, Assembler::kNearJump); | |
1888 __ jmp(&StubCode::ThreeArgsCheckInlineCacheLabel()); | |
1889 __ Bind(&test_four); | |
1890 __ Stop("Unsupported number of arguments tested."); | |
1891 } | |
1892 | |
1893 | |
1894 // Called only from unoptimized code. | 1864 // Called only from unoptimized code. |
1895 void StubCode::GenerateDebugStepCheckStub(Assembler* assembler) { | 1865 void StubCode::GenerateDebugStepCheckStub(Assembler* assembler) { |
1896 // Check single stepping. | 1866 // Check single stepping. |
1897 Label not_stepping; | 1867 Label not_stepping; |
1898 __ movl(EAX, FieldAddress(CTX, Context::isolate_offset())); | 1868 __ movl(EAX, FieldAddress(CTX, Context::isolate_offset())); |
1899 __ movzxb(EAX, Address(EAX, Isolate::single_step_offset())); | 1869 __ movzxb(EAX, Address(EAX, Isolate::single_step_offset())); |
1900 __ cmpl(EAX, Immediate(0)); | 1870 __ cmpl(EAX, Immediate(0)); |
1901 __ j(EQUAL, ¬_stepping, Assembler::kNearJump); | 1871 __ j(EQUAL, ¬_stepping, Assembler::kNearJump); |
1902 | 1872 |
1903 __ EnterStubFrame(); | 1873 __ EnterStubFrame(); |
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2180 const Register temp = ECX; | 2150 const Register temp = ECX; |
2181 __ movl(left, Address(ESP, 2 * kWordSize)); | 2151 __ movl(left, Address(ESP, 2 * kWordSize)); |
2182 __ movl(right, Address(ESP, 1 * kWordSize)); | 2152 __ movl(right, Address(ESP, 1 * kWordSize)); |
2183 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp); | 2153 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp); |
2184 __ ret(); | 2154 __ ret(); |
2185 } | 2155 } |
2186 | 2156 |
2187 } // namespace dart | 2157 } // namespace dart |
2188 | 2158 |
2189 #endif // defined TARGET_ARCH_IA32 | 2159 #endif // defined TARGET_ARCH_IA32 |
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