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ABI problem #42

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huangguiyang opened this issue Aug 16, 2017 · 2 comments
Open

ABI problem #42

huangguiyang opened this issue Aug 16, 2017 · 2 comments

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@huangguiyang
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struct S {
    int a, b;
};
void bar(struct S);
void foo() {
    struct S s;
    bar(s);
}

According to the amd64 ABI，the whole s is passed by register rdi. 😒
@wgtdkp
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wgtdkp commented Aug 16, 2017

yes, I passed its address~~~~~

@wgtdkp
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wgtdkp commented Aug 16, 2017

It is tooooooooo complicate of AMD64 ABI to pass a struct......

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@huangguiyang @wgtdkp