On 08/06/2010 11:11 AM, Wei Yongjun wrote: > Signed-off-by: Wei Yongjun<[email protected]> > > 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 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
