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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: ICData (unoptimized static call). | |
| 1865 // TOS(0): return address (Dart code). | |
| 1866 void StubCode::GenerateBreakpointStaticStub(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); // Preserve ICData for unoptimized call. | |
| 1871 const Immediate& raw_null = | |
| 1872 Immediate(reinterpret_cast<intptr_t>(Object::null())); | |
| 1873 __ pushl(raw_null); // Room for result. | |
| 1874 __ CallRuntime(kBreakpointStaticHandlerRuntimeEntry, 0); | |
| 1875 __ popl(EAX); // Code object. | |
| 1876 __ popl(ECX); // Restore ICData. | |
| 1877 __ LeaveFrame(); | |
| 1878 | |
| 1879 // Load arguments descriptor into EDX. | |
| 1880 __ movl(EDX, FieldAddress(ECX, ICData::arguments_descriptor_offset())); | |
| 1881 // Now call the static function. The breakpoint handler function | |
| 1882 // ensures that the call target is compiled. | |
| 1883 // Note that we can't just jump to the CallStatic function stub | |
| 1884 // here since that stub would patch the call site with the | |
| 1885 // static function address. | |
| 1886 __ movl(ECX, FieldAddress(EAX, Code::instructions_offset())); | |
| 1887 __ addl(ECX, Immediate(Instructions::HeaderSize() - kHeapObjectTag)); | |
| 1888 __ jmp(ECX); | |
| 1889 } | |
| 1890 | |
| 1891 | |
| 1892 // ECX: Inline cache data array. | 1864 // ECX: Inline cache data array. |
| 1893 // TOS(0): return address (Dart code). | 1865 // TOS(0): return address (Dart code). |
| 1894 void StubCode::GenerateBreakpointDynamicStub(Assembler* assembler) { | 1866 void StubCode::GenerateBreakpointDynamicStub(Assembler* assembler) { |
| 1895 // Create a stub frame as we are pushing some objects on the stack before | 1867 // Create a stub frame as we are pushing some objects on the stack before |
| 1896 // calling into the runtime. | 1868 // calling into the runtime. |
| 1897 __ EnterStubFrame(); | 1869 __ EnterStubFrame(); |
| 1898 __ pushl(ECX); | 1870 __ pushl(ECX); |
| 1899 __ CallRuntime(kBreakpointDynamicHandlerRuntimeEntry, 0); | 1871 __ CallRuntime(kBreakpointDynamicHandlerRuntimeEntry, 0); |
| 1900 __ popl(ECX); | 1872 __ popl(ECX); |
| 1901 __ LeaveFrame(); | 1873 __ LeaveFrame(); |
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| 2208 const Register temp = ECX; | 2180 const Register temp = ECX; |
| 2209 __ movl(left, Address(ESP, 2 * kWordSize)); | 2181 __ movl(left, Address(ESP, 2 * kWordSize)); |
| 2210 __ movl(right, Address(ESP, 1 * kWordSize)); | 2182 __ movl(right, Address(ESP, 1 * kWordSize)); |
| 2211 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp); | 2183 GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp); |
| 2212 __ ret(); | 2184 __ ret(); |
| 2213 } | 2185 } |
| 2214 | 2186 |
| 2215 } // namespace dart | 2187 } // namespace dart |
| 2216 | 2188 |
| 2217 #endif // defined TARGET_ARCH_IA32 | 2189 #endif // defined TARGET_ARCH_IA32 |
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