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Issue 140793010: Eliminate another debugger stub (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 6 years, 11 months ago
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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"
(...skipping 1843 matching lines...) Expand 10 before | Expand all | Expand 10 after
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();
(...skipping 306 matching lines...) Expand 10 before | Expand all | Expand 10 after
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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