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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_ARM | 7 #if V8_TARGET_ARCH_ARM |
8 | 8 |
9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
10 #include "src/debug/debug.h" | 10 #include "src/debug/debug.h" |
11 #include "src/deoptimizer.h" | 11 #include "src/deoptimizer.h" |
12 #include "src/full-codegen/full-codegen.h" | 12 #include "src/full-codegen/full-codegen.h" |
13 #include "src/interpreter/bytecodes.h" | |
14 #include "src/runtime/runtime.h" | 13 #include "src/runtime/runtime.h" |
15 | 14 |
16 namespace v8 { | 15 namespace v8 { |
17 namespace internal { | 16 namespace internal { |
18 | 17 |
19 | 18 |
20 #define __ ACCESS_MASM(masm) | 19 #define __ ACCESS_MASM(masm) |
21 | 20 |
22 | 21 |
23 void Builtins::Generate_Adaptor(MacroAssembler* masm, | 22 void Builtins::Generate_Adaptor(MacroAssembler* masm, |
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920 // Do a stack check to ensure we don't go over the limit. | 919 // Do a stack check to ensure we don't go over the limit. |
921 Label ok; | 920 Label ok; |
922 __ sub(r9, sp, Operand(r4)); | 921 __ sub(r9, sp, Operand(r4)); |
923 __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); | 922 __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); |
924 __ cmp(r9, Operand(r2)); | 923 __ cmp(r9, Operand(r2)); |
925 __ b(hs, &ok); | 924 __ b(hs, &ok); |
926 __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); | 925 __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); |
927 __ bind(&ok); | 926 __ bind(&ok); |
928 | 927 |
929 // If ok, push undefined as the initial value for all register file entries. | 928 // If ok, push undefined as the initial value for all register file entries. |
930 // Note: there should always be at least one stack slot for the return | |
931 // register in the register file. | |
932 Label loop_header; | 929 Label loop_header; |
| 930 Label loop_check; |
933 __ LoadRoot(r9, Heap::kUndefinedValueRootIndex); | 931 __ LoadRoot(r9, Heap::kUndefinedValueRootIndex); |
| 932 __ b(&loop_check, al); |
934 __ bind(&loop_header); | 933 __ bind(&loop_header); |
935 // TODO(rmcilroy): Consider doing more than one push per loop iteration. | 934 // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
936 __ push(r9); | 935 __ push(r9); |
937 // Continue loop if not done. | 936 // Continue loop if not done. |
| 937 __ bind(&loop_check); |
938 __ sub(r4, r4, Operand(kPointerSize), SetCC); | 938 __ sub(r4, r4, Operand(kPointerSize), SetCC); |
939 __ b(&loop_header, ne); | 939 __ b(&loop_header, ge); |
940 } | 940 } |
941 | 941 |
942 // TODO(rmcilroy): List of things not currently dealt with here but done in | 942 // TODO(rmcilroy): List of things not currently dealt with here but done in |
943 // fullcodegen's prologue: | 943 // fullcodegen's prologue: |
944 // - Support profiler (specifically profiling_counter). | 944 // - Support profiler (specifically profiling_counter). |
945 // - Call ProfileEntryHookStub when isolate has a function_entry_hook. | 945 // - Call ProfileEntryHookStub when isolate has a function_entry_hook. |
946 // - Allow simulator stop operations if FLAG_stop_at is set. | 946 // - Allow simulator stop operations if FLAG_stop_at is set. |
947 // - Deal with sloppy mode functions which need to replace the | 947 // - Deal with sloppy mode functions which need to replace the |
948 // receiver with the global proxy when called as functions (without an | 948 // receiver with the global proxy when called as functions (without an |
949 // explicit receiver object). | 949 // explicit receiver object). |
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963 // Perform stack guard check. | 963 // Perform stack guard check. |
964 { | 964 { |
965 Label ok; | 965 Label ok; |
966 __ LoadRoot(ip, Heap::kStackLimitRootIndex); | 966 __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
967 __ cmp(sp, Operand(ip)); | 967 __ cmp(sp, Operand(ip)); |
968 __ b(hs, &ok); | 968 __ b(hs, &ok); |
969 __ CallRuntime(Runtime::kStackGuard, 0); | 969 __ CallRuntime(Runtime::kStackGuard, 0); |
970 __ bind(&ok); | 970 __ bind(&ok); |
971 } | 971 } |
972 | 972 |
973 // Load bytecode offset and dispatch table into registers. | 973 // Load accumulator, register file, bytecode offset, dispatch table into |
| 974 // registers. |
| 975 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
| 976 __ sub(kInterpreterRegisterFileRegister, fp, |
| 977 Operand(kPointerSize + StandardFrameConstants::kFixedFrameSizeFromFp)); |
974 __ mov(kInterpreterBytecodeOffsetRegister, | 978 __ mov(kInterpreterBytecodeOffsetRegister, |
975 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); | 979 Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
976 __ LoadRoot(kInterpreterDispatchTableRegister, | 980 __ LoadRoot(kInterpreterDispatchTableRegister, |
977 Heap::kInterpreterTableRootIndex); | 981 Heap::kInterpreterTableRootIndex); |
978 __ add(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, | 982 __ add(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, |
979 Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 983 Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
980 | 984 |
981 // Dispatch to the first bytecode handler for the function. | 985 // Dispatch to the first bytecode handler for the function. |
982 __ ldrb(r0, MemOperand(kInterpreterBytecodeArrayRegister, | 986 __ ldrb(r1, MemOperand(kInterpreterBytecodeArrayRegister, |
983 kInterpreterBytecodeOffsetRegister)); | 987 kInterpreterBytecodeOffsetRegister)); |
984 __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r0, LSL, | 988 __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r1, LSL, |
985 kPointerSizeLog2)); | 989 kPointerSizeLog2)); |
986 // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging | 990 // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging |
987 // and header removal. | 991 // and header removal. |
988 __ add(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); | 992 __ add(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
989 __ Jump(ip); | 993 __ Call(ip); |
990 } | 994 } |
991 | 995 |
992 | 996 |
993 void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { | 997 void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { |
994 // TODO(rmcilroy): List of things not currently dealt with here but done in | 998 // TODO(rmcilroy): List of things not currently dealt with here but done in |
995 // fullcodegen's EmitReturnSequence. | 999 // fullcodegen's EmitReturnSequence. |
996 // - Supporting FLAG_trace for Runtime::TraceExit. | 1000 // - Supporting FLAG_trace for Runtime::TraceExit. |
997 // - Support profiler (specifically decrementing profiling_counter | 1001 // - Support profiler (specifically decrementing profiling_counter |
998 // appropriately and calling out to HandleInterrupts if necessary). | 1002 // appropriately and calling out to HandleInterrupts if necessary). |
999 | 1003 |
1000 // Load return value into r0. | 1004 // The return value is in accumulator, which is already in r0. |
1001 __ ldr(r0, MemOperand(fp, -kPointerSize - | 1005 |
1002 StandardFrameConstants::kFixedFrameSizeFromFp)); | |
1003 // Leave the frame (also dropping the register file). | 1006 // Leave the frame (also dropping the register file). |
1004 __ LeaveFrame(StackFrame::JAVA_SCRIPT); | 1007 __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
1005 // Drop receiver + arguments. | 1008 // Drop receiver + arguments. |
1006 __ Drop(1); // TODO(rmcilroy): Get number of arguments from BytecodeArray. | 1009 __ Drop(1); // TODO(rmcilroy): Get number of arguments from BytecodeArray. |
1007 __ Jump(lr); | 1010 __ Jump(lr); |
1008 } | 1011 } |
1009 | 1012 |
1010 | 1013 |
1011 void Builtins::Generate_CompileLazy(MacroAssembler* masm) { | 1014 void Builtins::Generate_CompileLazy(MacroAssembler* masm) { |
1012 CallRuntimePassFunction(masm, Runtime::kCompileLazy); | 1015 CallRuntimePassFunction(masm, Runtime::kCompileLazy); |
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1866 } | 1869 } |
1867 } | 1870 } |
1868 | 1871 |
1869 | 1872 |
1870 #undef __ | 1873 #undef __ |
1871 | 1874 |
1872 } // namespace internal | 1875 } // namespace internal |
1873 } // namespace v8 | 1876 } // namespace v8 |
1874 | 1877 |
1875 #endif // V8_TARGET_ARCH_ARM | 1878 #endif // V8_TARGET_ARCH_ARM |
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