want to port JIT to MIPS - IEEE ques
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want to port JIT to MIPS - IEEE ques
http://marc.info/?l=webkit-dev&m=123362331100323&w=2
In Generator::generateEnter(), there is comment "On gcc the function is regparm(3)...", how to understand that?WREC JIT generates a function with a C calling convention that implements the regular expression. The entry and exitfrom the function are generated by the generateEnter() and generateReturn*() methods.On OS X x86, the JIT generated function implements a regparm(3) calling convention (see WREC.h, the generated code is called through a CompiledRegExp function pointer).The function has no argument, why we peek four arguments from stack(input,output,length,index)?> These calls are not peeking values from the stack at the time they are called; they are emitting JIT code that willread values from the stack, when the JIT function has been generated and is run.> The JIT generated regular expression function is passed these four arguments (again see WREC.h).
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