Re: [PATCH] Test case of emulating multibyte NOP

[Gleb Natapov <gleb@redhat.com>]

On Wed, Jun 05, 2013 at 05:41:41PM +0800, 李春奇 <Arthur Chunqi Li> wrote:
> Add multibyte NOP test case to kvm-unit-tests. This version adds test
> cases into  x86/realmode.c. This can test one of bugs when booting
> RHEL5.9 64-bit.
> 
The patch is mangled. Lines are wrapped, tabs are replaced with spaces.

> Signed-off-by: Arthur Chunqi Li <yzt356@gmail.com>
> ---
>  x86/realmode.c |   24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/x86/realmode.c b/x86/realmode.c
> index 981be08..e6e48c9 100644
> --- a/x86/realmode.c
> +++ b/x86/realmode.c
> @@ -1504,6 +1504,29 @@ static void test_fninit(void)
>   report("fninit", 0, fsw == 0 && (fcw & 0x103f) == 0x003f);
>  }
> 
> +static void test_nopl(void)
> +{
> +        MK_INSN(nopl1, ".byte 0x90\n\r"); // 1 byte nop
> +        MK_INSN(nopl2, ".byte 0x66, 0x90\n\r"); // 2 bytes nop
> +        MK_INSN(nopl3, ".byte 0x0f, 0x1f, 0x00\n\r"); // 3 bytes nop
> +        MK_INSN(nopl4, ".byte 0x0f, 0x1f, 0x40, 0x00\n\r"); // 4 bytes nop
> +        MK_INSN(nopl5, ".byte 0x0f, 0x1f, 0x44, 0x00, 0x00\n\r"); //
> 5 bytes nop
> +        MK_INSN(nopl6, ".byte 0x66, 0x0f, 0x1f, 0x44, 0x00,
> 0x00\n\r"); // 6 bytes nop
> +        MK_INSN(nopl7, ".byte 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00,
> 0x00\n\r"); // 7 bytes nop
> +        MK_INSN(nopl8, ".byte 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00,
> 0x00, 0x00\n\r"); // 8 bytes nop
> +        MK_INSN(nopl9, ".byte 0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00,
> 0x00, 0x00, 0x00\n\r"); // 9 bytes nop
> +        exec_in_big_real_mode(&insn_nopl1);
> +        exec_in_big_real_mode(&insn_nopl2);
> +        exec_in_big_real_mode(&insn_nopl3);
> +        exec_in_big_real_mode(&insn_nopl4);
> +        exec_in_big_real_mode(&insn_nopl5);
> +        exec_in_big_real_mode(&insn_nopl6);
> +        exec_in_big_real_mode(&insn_nopl7);
> +        exec_in_big_real_mode(&insn_nopl8);
> +        exec_in_big_real_mode(&insn_nopl9);
> +        report("nopl", 0, 1);
> +}
> +
>  void realmode_start(void)
>  {
>   test_null();
> @@ -1548,6 +1571,7 @@ void realmode_start(void)
>   test_xlat();
>   test_salc();
>   test_fninit();
> + test_nopl();
> 
>   exit(0);
>  }
> --
> 1.7.9.5

--
			Gleb.