want to port JIT to MIPS - which callingconvention is used here?

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https://lists.webkit.org/pipermail/webkit-dev/2009-February/006845.html

want to port JIT to MIPS - which calling convention is used here?

in JITPropertyAccess.cpp:    if (transitionWillNeedStorageRealloc(oldStructure, newStructure)) {        pop(X86::ebx);      ///pop return address, why? for exception?#if PLATFORM(X86_64)        ///which convention is this?        move(Imm32(newStructure->propertyStorageCapacity()), regT1);  //edx        move(Imm32(oldStructure->propertyStorageCapacity()), X86::esi);        move(regT0, X86::edi);        callTarget = call();#else                       ///__cdecl, yet how can I know resizePropertyStorage() use __cdecl?         push(Imm32(newStructure->propertyStorageCapacity()));        push(Imm32(oldStructure->propertyStorageCapacity()));        push(regT0);        callTarget = call();        addPtr(Imm32(3 * sizeof(void*)), X86::esp); ///clean stack#endif