diff options
Diffstat (limited to 'JavaScriptCore/jit/JITOpcodes32_64.cpp')
| -rw-r--r-- | JavaScriptCore/jit/JITOpcodes32_64.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/JavaScriptCore/jit/JITOpcodes32_64.cpp b/JavaScriptCore/jit/JITOpcodes32_64.cpp index 035325a..1ad19b7 100644 --- a/JavaScriptCore/jit/JITOpcodes32_64.cpp +++ b/JavaScriptCore/jit/JITOpcodes32_64.cpp @@ -244,6 +244,37 @@ JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isCon restoreReturnAddressBeforeReturn(regT3); +#elif CPU(MIPS) + // Load caller frame's scope chain into this callframe so that whatever we call can + // get to its global data. + emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0); + emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0); + emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain); + + preserveReturnAddressAfterCall(regT3); // Callee preserved + emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC); + + // Calling convention: f(a0, a1, a2, a3); + // Host function signature: f(ExecState*); + + // Allocate stack space for 16 bytes (8-byte aligned) + // 16 bytes (unused) for 4 arguments + subPtr(Imm32(16), stackPointerRegister); + + // Setup arg0 + move(callFrameRegister, MIPSRegisters::a0); + + // Call + emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2); + loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2); + move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack. + call(Address(regT2, executableOffsetToFunction)); + + // Restore stack space + addPtr(Imm32(16), stackPointerRegister); + + restoreReturnAddressBeforeReturn(regT3); + #elif ENABLE(JIT_OPTIMIZE_NATIVE_CALL) #error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform." #else @@ -327,6 +358,39 @@ JIT::CodePtr JIT::privateCompileCTINativeCall(PassRefPtr<ExecutablePool> executa restoreReturnAddressBeforeReturn(regT3); +#elif CPU(MIPS) + // Load caller frame's scope chain into this callframe so that whatever we call can + // get to its global data. + emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0); + emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0); + emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain); + + preserveReturnAddressAfterCall(regT3); // Callee preserved + emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC); + + // Calling convention: f(a0, a1, a2, a3); + // Host function signature: f(ExecState*); + + // Allocate stack space for 16 bytes (8-byte aligned) + // 16 bytes (unused) for 4 arguments + subPtr(Imm32(16), stackPointerRegister); + + // Setup arg0 + move(callFrameRegister, MIPSRegisters::a0); + + // Call + emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2); + loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2); + move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack. + + // call the function + nativeCall = call(); + + // Restore stack space + addPtr(Imm32(16), stackPointerRegister); + + restoreReturnAddressBeforeReturn(regT3); + #elif ENABLE(JIT_OPTIMIZE_NATIVE_CALL) #error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform." #else |