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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 // 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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839 return new Redirection(external_function, type); | 839 return new Redirection(external_function, type); |
840 } | 840 } |
841 | 841 |
842 static Redirection* FromSwiInstruction(Instruction* swi_instruction) { | 842 static Redirection* FromSwiInstruction(Instruction* swi_instruction) { |
843 char* addr_of_swi = reinterpret_cast<char*>(swi_instruction); | 843 char* addr_of_swi = reinterpret_cast<char*>(swi_instruction); |
844 char* addr_of_redirection = | 844 char* addr_of_redirection = |
845 addr_of_swi - OFFSET_OF(Redirection, swi_instruction_); | 845 addr_of_swi - OFFSET_OF(Redirection, swi_instruction_); |
846 return reinterpret_cast<Redirection*>(addr_of_redirection); | 846 return reinterpret_cast<Redirection*>(addr_of_redirection); |
847 } | 847 } |
848 | 848 |
| 849 static void* ReverseRedirection(int32_t reg) { |
| 850 Redirection* redirection = FromSwiInstruction( |
| 851 reinterpret_cast<Instruction*>(reinterpret_cast<void*>(reg))); |
| 852 return redirection->external_function(); |
| 853 } |
| 854 |
849 private: | 855 private: |
850 void* external_function_; | 856 void* external_function_; |
851 uint32_t swi_instruction_; | 857 uint32_t swi_instruction_; |
852 ExternalReference::Type type_; | 858 ExternalReference::Type type_; |
853 Redirection* next_; | 859 Redirection* next_; |
854 }; | 860 }; |
855 | 861 |
856 | 862 |
857 void* Simulator::RedirectExternalReference(void* external_function, | 863 void* Simulator::RedirectExternalReference(void* external_function, |
858 ExternalReference::Type type) { | 864 ExternalReference::Type type) { |
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1682 | 1688 |
1683 // These prototypes handle the four types of FP calls. | 1689 // These prototypes handle the four types of FP calls. |
1684 typedef int64_t (*SimulatorRuntimeCompareCall)(double darg0, double darg1); | 1690 typedef int64_t (*SimulatorRuntimeCompareCall)(double darg0, double darg1); |
1685 typedef double (*SimulatorRuntimeFPFPCall)(double darg0, double darg1); | 1691 typedef double (*SimulatorRuntimeFPFPCall)(double darg0, double darg1); |
1686 typedef double (*SimulatorRuntimeFPCall)(double darg0); | 1692 typedef double (*SimulatorRuntimeFPCall)(double darg0); |
1687 typedef double (*SimulatorRuntimeFPIntCall)(double darg0, int32_t arg0); | 1693 typedef double (*SimulatorRuntimeFPIntCall)(double darg0, int32_t arg0); |
1688 | 1694 |
1689 // This signature supports direct call in to API function native callback | 1695 // This signature supports direct call in to API function native callback |
1690 // (refer to InvocationCallback in v8.h). | 1696 // (refer to InvocationCallback in v8.h). |
1691 typedef void (*SimulatorRuntimeDirectApiCall)(int32_t arg0); | 1697 typedef void (*SimulatorRuntimeDirectApiCall)(int32_t arg0); |
1692 typedef void (*SimulatorRuntimeProfilingApiCall)(int32_t arg0, int32_t arg1); | 1698 typedef void (*SimulatorRuntimeProfilingApiCall)(int32_t arg0, void* arg1); |
1693 | 1699 |
1694 // This signature supports direct call to accessor getter callback. | 1700 // This signature supports direct call to accessor getter callback. |
1695 typedef void (*SimulatorRuntimeDirectGetterCall)(int32_t arg0, int32_t arg1); | 1701 typedef void (*SimulatorRuntimeDirectGetterCall)(int32_t arg0, int32_t arg1); |
1696 typedef void (*SimulatorRuntimeProfilingGetterCall)( | 1702 typedef void (*SimulatorRuntimeProfilingGetterCall)( |
1697 int32_t arg0, int32_t arg1, int32_t arg2); | 1703 int32_t arg0, int32_t arg1, void* arg2); |
1698 | 1704 |
1699 // Software interrupt instructions are used by the simulator to call into the | 1705 // Software interrupt instructions are used by the simulator to call into the |
1700 // C-based V8 runtime. | 1706 // C-based V8 runtime. |
1701 void Simulator::SoftwareInterrupt(Instruction* instr) { | 1707 void Simulator::SoftwareInterrupt(Instruction* instr) { |
1702 int svc = instr->SvcValue(); | 1708 int svc = instr->SvcValue(); |
1703 switch (svc) { | 1709 switch (svc) { |
1704 case kCallRtRedirected: { | 1710 case kCallRtRedirected: { |
1705 // Check if stack is aligned. Error if not aligned is reported below to | 1711 // Check if stack is aligned. Error if not aligned is reported below to |
1706 // include information on the function called. | 1712 // include information on the function called. |
1707 bool stack_aligned = | 1713 bool stack_aligned = |
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1826 PrintF("Call to host function at %p args %08x %08x", | 1832 PrintF("Call to host function at %p args %08x %08x", |
1827 reinterpret_cast<void*>(external), arg0, arg1); | 1833 reinterpret_cast<void*>(external), arg0, arg1); |
1828 if (!stack_aligned) { | 1834 if (!stack_aligned) { |
1829 PrintF(" with unaligned stack %08x\n", get_register(sp)); | 1835 PrintF(" with unaligned stack %08x\n", get_register(sp)); |
1830 } | 1836 } |
1831 PrintF("\n"); | 1837 PrintF("\n"); |
1832 } | 1838 } |
1833 CHECK(stack_aligned); | 1839 CHECK(stack_aligned); |
1834 SimulatorRuntimeProfilingApiCall target = | 1840 SimulatorRuntimeProfilingApiCall target = |
1835 reinterpret_cast<SimulatorRuntimeProfilingApiCall>(external); | 1841 reinterpret_cast<SimulatorRuntimeProfilingApiCall>(external); |
1836 target(arg0, arg1); | 1842 target(arg0, Redirection::ReverseRedirection(arg1)); |
1837 } else if ( | 1843 } else if ( |
1838 redirection->type() == ExternalReference::DIRECT_GETTER_CALL) { | 1844 redirection->type() == ExternalReference::DIRECT_GETTER_CALL) { |
1839 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { | 1845 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { |
1840 PrintF("Call to host function at %p args %08x %08x", | 1846 PrintF("Call to host function at %p args %08x %08x", |
1841 reinterpret_cast<void*>(external), arg0, arg1); | 1847 reinterpret_cast<void*>(external), arg0, arg1); |
1842 if (!stack_aligned) { | 1848 if (!stack_aligned) { |
1843 PrintF(" with unaligned stack %08x\n", get_register(sp)); | 1849 PrintF(" with unaligned stack %08x\n", get_register(sp)); |
1844 } | 1850 } |
1845 PrintF("\n"); | 1851 PrintF("\n"); |
1846 } | 1852 } |
1847 CHECK(stack_aligned); | 1853 CHECK(stack_aligned); |
1848 SimulatorRuntimeDirectGetterCall target = | 1854 SimulatorRuntimeDirectGetterCall target = |
1849 reinterpret_cast<SimulatorRuntimeDirectGetterCall>(external); | 1855 reinterpret_cast<SimulatorRuntimeDirectGetterCall>(external); |
1850 target(arg0, arg1); | 1856 target(arg0, arg1); |
1851 } else if ( | 1857 } else if ( |
1852 redirection->type() == ExternalReference::PROFILING_GETTER_CALL) { | 1858 redirection->type() == ExternalReference::PROFILING_GETTER_CALL) { |
1853 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { | 1859 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { |
1854 PrintF("Call to host function at %p args %08x %08x %08x", | 1860 PrintF("Call to host function at %p args %08x %08x %08x", |
1855 reinterpret_cast<void*>(external), arg0, arg1, arg2); | 1861 reinterpret_cast<void*>(external), arg0, arg1, arg2); |
1856 if (!stack_aligned) { | 1862 if (!stack_aligned) { |
1857 PrintF(" with unaligned stack %08x\n", get_register(sp)); | 1863 PrintF(" with unaligned stack %08x\n", get_register(sp)); |
1858 } | 1864 } |
1859 PrintF("\n"); | 1865 PrintF("\n"); |
1860 } | 1866 } |
1861 CHECK(stack_aligned); | 1867 CHECK(stack_aligned); |
1862 SimulatorRuntimeProfilingGetterCall target = | 1868 SimulatorRuntimeProfilingGetterCall target = |
1863 reinterpret_cast<SimulatorRuntimeProfilingGetterCall>( | 1869 reinterpret_cast<SimulatorRuntimeProfilingGetterCall>( |
1864 external); | 1870 external); |
1865 target(arg0, arg1, arg2); | 1871 target(arg0, arg1, Redirection::ReverseRedirection(arg2)); |
1866 } else { | 1872 } else { |
1867 // builtin call. | 1873 // builtin call. |
1868 ASSERT(redirection->type() == ExternalReference::BUILTIN_CALL); | 1874 ASSERT(redirection->type() == ExternalReference::BUILTIN_CALL); |
1869 SimulatorRuntimeCall target = | 1875 SimulatorRuntimeCall target = |
1870 reinterpret_cast<SimulatorRuntimeCall>(external); | 1876 reinterpret_cast<SimulatorRuntimeCall>(external); |
1871 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { | 1877 if (::v8::internal::FLAG_trace_sim || !stack_aligned) { |
1872 PrintF( | 1878 PrintF( |
1873 "Call to host function at %p " | 1879 "Call to host function at %p " |
1874 "args %08x, %08x, %08x, %08x, %08x, %08x", | 1880 "args %08x, %08x, %08x, %08x, %08x, %08x", |
1875 FUNCTION_ADDR(target), | 1881 FUNCTION_ADDR(target), |
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3840 uintptr_t address = *stack_slot; | 3846 uintptr_t address = *stack_slot; |
3841 set_register(sp, current_sp + sizeof(uintptr_t)); | 3847 set_register(sp, current_sp + sizeof(uintptr_t)); |
3842 return address; | 3848 return address; |
3843 } | 3849 } |
3844 | 3850 |
3845 } } // namespace v8::internal | 3851 } } // namespace v8::internal |
3846 | 3852 |
3847 #endif // USE_SIMULATOR | 3853 #endif // USE_SIMULATOR |
3848 | 3854 |
3849 #endif // V8_TARGET_ARCH_ARM | 3855 #endif // V8_TARGET_ARCH_ARM |
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