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Side by Side Diff: src/mips/simulator-mips.cc

Issue 9227007: Version 3.8.6 (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 8 years, 11 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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881 } 881 }
882 882
883 883
884 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) { 884 Simulator::Simulator(Isolate* isolate) : isolate_(isolate) {
885 i_cache_ = isolate_->simulator_i_cache(); 885 i_cache_ = isolate_->simulator_i_cache();
886 if (i_cache_ == NULL) { 886 if (i_cache_ == NULL) {
887 i_cache_ = new v8::internal::HashMap(&ICacheMatch); 887 i_cache_ = new v8::internal::HashMap(&ICacheMatch);
888 isolate_->set_simulator_i_cache(i_cache_); 888 isolate_->set_simulator_i_cache(i_cache_);
889 } 889 }
890 Initialize(isolate); 890 Initialize(isolate);
891 // Setup simulator support first. Some of this information is needed to 891 // Set up simulator support first. Some of this information is needed to
892 // setup the architecture state. 892 // setup the architecture state.
893 stack_ = reinterpret_cast<char*>(malloc(stack_size_)); 893 stack_ = reinterpret_cast<char*>(malloc(stack_size_));
894 pc_modified_ = false; 894 pc_modified_ = false;
895 icount_ = 0; 895 icount_ = 0;
896 break_count_ = 0; 896 break_count_ = 0;
897 break_pc_ = NULL; 897 break_pc_ = NULL;
898 break_instr_ = 0; 898 break_instr_ = 0;
899 899
900 // Setup architecture state. 900 // Set up architecture state.
901 // All registers are initialized to zero to start with. 901 // All registers are initialized to zero to start with.
902 for (int i = 0; i < kNumSimuRegisters; i++) { 902 for (int i = 0; i < kNumSimuRegisters; i++) {
903 registers_[i] = 0; 903 registers_[i] = 0;
904 } 904 }
905 for (int i = 0; i < kNumFPURegisters; i++) { 905 for (int i = 0; i < kNumFPURegisters; i++) {
906 FPUregisters_[i] = 0; 906 FPUregisters_[i] = 0;
907 } 907 }
908 FCSR_ = 0; 908 FCSR_ = 0;
909 909
910 // The sp is initialized to point to the bottom (high address) of the 910 // The sp is initialized to point to the bottom (high address) of the
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1937 1937
1938 // For break and trap instructions. 1938 // For break and trap instructions.
1939 bool do_interrupt = false; 1939 bool do_interrupt = false;
1940 1940
1941 // For jr and jalr. 1941 // For jr and jalr.
1942 // Get current pc. 1942 // Get current pc.
1943 int32_t current_pc = get_pc(); 1943 int32_t current_pc = get_pc();
1944 // Next pc 1944 // Next pc
1945 int32_t next_pc = 0; 1945 int32_t next_pc = 0;
1946 1946
1947 // Setup the variables if needed before executing the instruction. 1947 // Set up the variables if needed before executing the instruction.
1948 ConfigureTypeRegister(instr, 1948 ConfigureTypeRegister(instr,
1949 alu_out, 1949 alu_out,
1950 i64hilo, 1950 i64hilo,
1951 u64hilo, 1951 u64hilo,
1952 next_pc, 1952 next_pc,
1953 do_interrupt); 1953 do_interrupt);
1954 1954
1955 // ---------- Raise exceptions triggered. 1955 // ---------- Raise exceptions triggered.
1956 SignalExceptions(); 1956 SignalExceptions();
1957 1957
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2704 } 2704 }
2705 program_counter = get_pc(); 2705 program_counter = get_pc();
2706 } 2706 }
2707 } 2707 }
2708 } 2708 }
2709 2709
2710 2710
2711 int32_t Simulator::Call(byte* entry, int argument_count, ...) { 2711 int32_t Simulator::Call(byte* entry, int argument_count, ...) {
2712 va_list parameters; 2712 va_list parameters;
2713 va_start(parameters, argument_count); 2713 va_start(parameters, argument_count);
2714 // Setup arguments. 2714 // Set up arguments.
2715 2715
2716 // First four arguments passed in registers. 2716 // First four arguments passed in registers.
2717 ASSERT(argument_count >= 4); 2717 ASSERT(argument_count >= 4);
2718 set_register(a0, va_arg(parameters, int32_t)); 2718 set_register(a0, va_arg(parameters, int32_t));
2719 set_register(a1, va_arg(parameters, int32_t)); 2719 set_register(a1, va_arg(parameters, int32_t));
2720 set_register(a2, va_arg(parameters, int32_t)); 2720 set_register(a2, va_arg(parameters, int32_t));
2721 set_register(a3, va_arg(parameters, int32_t)); 2721 set_register(a3, va_arg(parameters, int32_t));
2722 2722
2723 // Remaining arguments passed on stack. 2723 // Remaining arguments passed on stack.
2724 int original_stack = get_register(sp); 2724 int original_stack = get_register(sp);
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2751 int32_t s2_val = get_register(s2); 2751 int32_t s2_val = get_register(s2);
2752 int32_t s3_val = get_register(s3); 2752 int32_t s3_val = get_register(s3);
2753 int32_t s4_val = get_register(s4); 2753 int32_t s4_val = get_register(s4);
2754 int32_t s5_val = get_register(s5); 2754 int32_t s5_val = get_register(s5);
2755 int32_t s6_val = get_register(s6); 2755 int32_t s6_val = get_register(s6);
2756 int32_t s7_val = get_register(s7); 2756 int32_t s7_val = get_register(s7);
2757 int32_t gp_val = get_register(gp); 2757 int32_t gp_val = get_register(gp);
2758 int32_t sp_val = get_register(sp); 2758 int32_t sp_val = get_register(sp);
2759 int32_t fp_val = get_register(fp); 2759 int32_t fp_val = get_register(fp);
2760 2760
2761 // Setup the callee-saved registers with a known value. To be able to check 2761 // Set up the callee-saved registers with a known value. To be able to check
2762 // that they are preserved properly across JS execution. 2762 // that they are preserved properly across JS execution.
2763 int32_t callee_saved_value = icount_; 2763 int32_t callee_saved_value = icount_;
2764 set_register(s0, callee_saved_value); 2764 set_register(s0, callee_saved_value);
2765 set_register(s1, callee_saved_value); 2765 set_register(s1, callee_saved_value);
2766 set_register(s2, callee_saved_value); 2766 set_register(s2, callee_saved_value);
2767 set_register(s3, callee_saved_value); 2767 set_register(s3, callee_saved_value);
2768 set_register(s4, callee_saved_value); 2768 set_register(s4, callee_saved_value);
2769 set_register(s5, callee_saved_value); 2769 set_register(s5, callee_saved_value);
2770 set_register(s6, callee_saved_value); 2770 set_register(s6, callee_saved_value);
2771 set_register(s7, callee_saved_value); 2771 set_register(s7, callee_saved_value);
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2827 } 2827 }
2828 2828
2829 2829
2830 #undef UNSUPPORTED 2830 #undef UNSUPPORTED
2831 2831
2832 } } // namespace v8::internal 2832 } } // namespace v8::internal
2833 2833
2834 #endif // USE_SIMULATOR 2834 #endif // USE_SIMULATOR
2835 2835
2836 #endif // V8_TARGET_ARCH_MIPS 2836 #endif // V8_TARGET_ARCH_MIPS
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