On 08/06/2010 11:11 AM, Wei Yongjun wrote:
> Signed-off-by: Wei Yongjun<yjwei@xxxxxxxxxxxxxx>
>
> diff --git a/x86/emulator.c b/x86/emulator.c
> index e278812..5c8093e 100644
> --- a/x86/emulator.c
> +++ b/x86/emulator.c
> @@ -375,6 +375,44 @@ void test_btc(void *mem)
> report("btcl reg, r/m", a[0] == 1&& a[1] == 2&& a[2] == 0x80000004);
> }
>
> +void test_setcc(void *mem)
> +{
> + unsigned char *memb = mem;
> +
> + asm ("seto %0":"=m"(*memb));
> + report("seto r/m8", *memb == 0);
> + asm ("setno %0":"=m"(*memb));
> + report("setno r/m8", *memb == 1);
> + asm ("setc %0":"=m"(*memb));
> + report("setc r/m8", *memb == 0);
> + asm ("setnc %0":"=m"(*memb));
> + report("setnc r/m8", *memb == 1);
> + asm ("sete %0":"=m"(*memb));
> + report("setz r/m8", *memb == 0);
> + asm ("setne %0":"=m"(*memb));
> + report("setnz r/m8", *memb == 1);
> + asm ("seta %0":"=m"(*memb));
> + report("seta r/m8", *memb == 1);
> + asm ("setna %0":"=m"(*memb));
> + report("setna r/m8", *memb == 0);
> + asm ("sets %0":"=m"(*memb));
> + report("sets r/m8", *memb == 0);
> + asm ("setns %0":"=m"(*memb));
> + report("setns r/m8", *memb == 1);
> + asm ("setp %0":"=m"(*memb));
> + report("setp r/m8", *memb == 0);
> + asm ("setnp %0":"=m"(*memb));
> + report("setnp r/m8", *memb == 1);
> + asm ("setl %0":"=m"(*memb));
> + report("setl r/m8", *memb == 0);
> + asm ("setnl %0":"=m"(*memb));
> + report("setnl r/m8", *memb == 1);
> + asm ("setle %0":"=m"(*memb));
> + report("setle r/m8", *memb == 0);
> + asm ("setnle %0":"=m"(*memb));
> + report("setnle r/m8", *memb == 1);
> +}
These results depend on the environment, since you do not know which
instruction last set the flags. You can add a mov+cmp pair before the
setcc instruction to guarantee that the flags are set correctly.
Paolo
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