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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_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
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1818 | 1818 |
1819 | 1819 |
1820 // Jump to the exception or error handler. | 1820 // Jump to the exception or error handler. |
1821 // LR: return address. | 1821 // LR: return address. |
1822 // R0: program_counter. | 1822 // R0: program_counter. |
1823 // R1: stack_pointer. | 1823 // R1: stack_pointer. |
1824 // R2: frame_pointer. | 1824 // R2: frame_pointer. |
1825 // R3: error object. | 1825 // R3: error object. |
1826 // SP + 0: address of stacktrace object. | 1826 // SP + 0: address of stacktrace object. |
1827 // SP + 4: thread. | 1827 // SP + 4: thread. |
1828 // SP + 8: pool pointer | |
1829 // Does not return. | 1828 // Does not return. |
1830 void StubCode::GenerateJumpToExceptionHandlerStub(Assembler* assembler) { | 1829 void StubCode::GenerateJumpToExceptionHandlerStub(Assembler* assembler) { |
1831 ASSERT(kExceptionObjectReg == R0); | 1830 ASSERT(kExceptionObjectReg == R0); |
1832 ASSERT(kStackTraceObjectReg == R1); | 1831 ASSERT(kStackTraceObjectReg == R1); |
1833 __ mov(IP, Operand(R1)); // Copy Stack pointer into IP. | 1832 __ mov(IP, Operand(R1)); // Copy Stack pointer into IP. |
1834 __ mov(LR, Operand(R0)); // Program counter. | 1833 __ mov(LR, Operand(R0)); // Program counter. |
1835 __ mov(R0, Operand(R3)); // Exception object. | 1834 __ mov(R0, Operand(R3)); // Exception object. |
1836 __ ldr(R1, Address(SP, 0)); // StackTrace object. | 1835 __ ldr(R1, Address(SP, 0)); // StackTrace object. |
1837 __ ldr(THR, Address(SP, 4)); // Thread. | 1836 __ ldr(THR, Address(SP, 4)); // Thread. |
1838 __ ldr(PP, Address(SP, 8)); // Pool pointer. | |
1839 __ mov(FP, Operand(R2)); // Frame_pointer. | 1837 __ mov(FP, Operand(R2)); // Frame_pointer. |
1840 __ mov(SP, Operand(IP)); // Set Stack pointer. | 1838 __ mov(SP, Operand(IP)); // Set Stack pointer. |
1841 // Set the tag. | 1839 // Set the tag. |
1842 __ LoadImmediate(R2, VMTag::kDartTagId); | 1840 __ LoadImmediate(R2, VMTag::kDartTagId); |
1843 __ StoreToOffset(kWord, R2, THR, Thread::vm_tag_offset()); | 1841 __ StoreToOffset(kWord, R2, THR, Thread::vm_tag_offset()); |
1844 // Clear top exit frame. | 1842 // Clear top exit frame. |
1845 __ LoadImmediate(R2, 0); | 1843 __ LoadImmediate(R2, 0); |
1846 __ StoreToOffset(kWord, R2, THR, Thread::top_exit_frame_info_offset()); | 1844 __ StoreToOffset(kWord, R2, THR, Thread::top_exit_frame_info_offset()); |
| 1845 // Restore the pool pointer. |
| 1846 __ RestoreCodePointer(); |
| 1847 __ LoadPoolPointer(); |
1847 __ bx(LR); // Jump to the exception handler code. | 1848 __ bx(LR); // Jump to the exception handler code. |
1848 } | 1849 } |
1849 | 1850 |
1850 | 1851 |
1851 // Calls to the runtime to optimize the given function. | 1852 // Calls to the runtime to optimize the given function. |
1852 // R8: function to be reoptimized. | 1853 // R8: function to be reoptimized. |
1853 // R4: argument descriptor (preserved). | 1854 // R4: argument descriptor (preserved). |
1854 void StubCode::GenerateOptimizeFunctionStub(Assembler* assembler) { | 1855 void StubCode::GenerateOptimizeFunctionStub(Assembler* assembler) { |
1855 __ EnterStubFrame(); | 1856 __ EnterStubFrame(); |
1856 __ Push(R4); | 1857 __ Push(R4); |
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2217 } | 2218 } |
2218 | 2219 |
2219 | 2220 |
2220 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { | 2221 void StubCode::GenerateFrameAwaitingMaterializationStub(Assembler* assembler) { |
2221 __ bkpt(0); | 2222 __ bkpt(0); |
2222 } | 2223 } |
2223 | 2224 |
2224 } // namespace dart | 2225 } // namespace dart |
2225 | 2226 |
2226 #endif // defined TARGET_ARCH_ARM | 2227 #endif // defined TARGET_ARCH_ARM |
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