Re: [PATCH kvm-unit-tests] realmode: test AAM, XLAT, SALC

[Gleb Natapov <gleb@redhat.com>]

On Thu, May 09, 2013 at 10:53:37AM +0200, Paolo Bonzini wrote:
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  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?

> +
> +    inregs.eax = 0x12345678;
> +    exec_in_big_real_mode(&insn_clc_salc);
> +    report("salc (1)", R_AX, outregs.eax == 0x12345600);
> +    exec_in_big_real_mode(&insn_stc_salc);
> +    report("salc (2)", R_AX, outregs.eax == 0x123456ff);
> +}
> +
>  static void test_fninit(void)
>  {
>  	u16 fcw = -1, fsw = -1;
> @@ -1443,6 +1480,9 @@ void realmode_start(void)
>  	test_movzx_movsx();
>  	test_bswap();
>  	test_aad();
> +	test_aam();
> +	test_xlat();
> +	test_salc();
>  	test_fninit();
>  
>  	exit(0);
> -- 
> 1.8.1.4

--
			Gleb.