On Thu, May 09, 2013 at 11:18:07AM +0200, Paolo Bonzini wrote:
> Il 09/05/2013 11:13, Gleb Natapov ha scritto:
> > On Thu, May 09, 2013 at 10:53:37AM +0200, Paolo Bonzini wrote:
> >> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> >> ---
> >> x86/realmode.c | 40 ++++++++++++++++++++++++++++++++++++++++
> >> 1 file changed, 40 insertions(+)
> >>
> >> diff --git a/x86/realmode.c b/x86/realmode.c
> >> index 91c93a9..35ace08 100644
> >> --- a/x86/realmode.c
> >> +++ b/x86/realmode.c
> >> @@ -1391,6 +1391,43 @@ static void test_aad(void)
> >> report("aad", R_AX, outregs.eax == 0x123400d4);
> >> }
> >>
> >> +static void test_aam(void)
> >> +{
> >> + MK_INSN(aam, "aam");
> >> +
> >> + inregs.eax = 0x76543210;
> >> + exec_in_big_real_mode(&insn_aam);
> >> + report("aam", R_AX, outregs.eax == 0x76540106);
> >> +}
> >> +
> >> +static void test_xlat(void)
> >> +{
> >> + MK_INSN(xlat, "xlat");
> >> + u8 table[256];
> >> + int i;
> >> +
> >> + for (i = 0; i < 256; i++) {
> >> + table[i] = i + 1;
> >> + }
> >> +
> >> + inregs.eax = 0x89abcdef;
> >> + inregs.ebx = (u32)table;
> >> + exec_in_big_real_mode(&insn_xlat);
> >> + report("xlat", R_AX, outregs.eax == 0x89abcdf0);
> >> +}
> >> +
> >> +static void test_salc(void)
> >> +{
> >> + MK_INSN(clc_salc, "clc; .byte 0xd6");
> >> + MK_INSN(stc_salc, "stc; .byte 0xd6");
> > Heh, who uses that?
>
> Some real-mode programs do. Plus, the "N" in the opcode table looked
> really bad. :)
>
Ah, I thought sgabios use that one too.
--
Gleb.
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