[Qemu-devel] A question about qemu 0.9.1

[Qemu-devel] A question about qemu 0.9.1

[y y]

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I am learning qemu 0.9.1，and there is a question.After I complied the
project,there are some codes in "/i386-softmmu/op.h"

case INDEX_op_movl_A0_EAX: {
extern void op_movl_A0_EAX();
memcpy(gen_code_ptr, (void *)((char *)&op_movl_A0_EAX+0), 3);
gen_code_ptr += 3;
}

Where is this op_movl_A0_EAX() come from?I can't find it in the "op.c" or
even the whole project.But it does exist in the "op.o".I check the file
"Makefile.target"
op.o: op.c
$(CC) $(OP_CFLAGS) $(CPPFLAGS) -c -o $@ $<

"op.o" depends  only on "op.c",isn't it?Then where does this
op_movl_A0_EAX() come from?
Maybe I have made some mistakes.Correct me if I am wrong...
Please give me some help.I was blocked here for a long time.
Thank you very much!
                                                                --Terry

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Re: [Qemu-devel] A question about qemu 0.9.1

[Brad Hards]

On Mon, 4 Apr 2011 08:10:55 pm y y wrote:
> op_movl_A0_EAX() come from?
I think its a pre-processor generated thing. 

So to find it, I think you need to find the parts (like INDEX_op in one pre-
processor command, and the rest in another place), and how it is pasted 
together.

HTH.

Brad

Re: [Qemu-devel] A question about qemu 0.9.1

[Peter Maydell]

2011/4/4 y y <fenglei999999@gmail.com>:
> I am learning qemu 0.9.1

The obvious question here is "why are you looking at 0.9.1?"; it
is now extremely old... In particular it predates the switch to TCG
so anything you learn about the codegen process is likely to be
irrelevant to newer versions.

-- PMM