[committed][gdb/testsuite] Fix gdb.reverse/i387-env-reverse.exp for -pie

[Tom de Vries <tdevries@suse.de>]

On 6/22/22 15:05, Tom de Vries wrote:
> Hi,
> 
> When running test-case gdb.reverse/i387-env-reverse.exp for x86_64-linux with
> target board unix/-m32/-fPIE/-pie, we run into:
> ...
> (gdb) PASS: gdb.reverse/i387-env-reverse.exp: push st0
> info register eax^M
> eax            0x56550000          1448411136^M
> (gdb) FAIL: gdb.reverse/i387-env-reverse.exp: verify eax == 0x8040000
> ...
> 
> The problem is that the tested instruction (fstsw) only sets $ax, not $eax.
> 
> Fix this by verifying $ax instead of $eax.
> 
> Tested on x86_64-linux with target boards unix/-m32 and unix/-m32/-fPIE/-pie.
> 
> Any comments?

Committed.

Thanks,
- Tom

> [gdb/testsuite] Fix gdb.reverse/i387-env-reverse.exp for -pie
> 
> ---
>   gdb/testsuite/gdb.reverse/i387-env-reverse.exp | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/gdb/testsuite/gdb.reverse/i387-env-reverse.exp b/gdb/testsuite/gdb.reverse/i387-env-reverse.exp
> index a0a79c22ed0..53fee0986df 100644
> --- a/gdb/testsuite/gdb.reverse/i387-env-reverse.exp
> +++ b/gdb/testsuite/gdb.reverse/i387-env-reverse.exp
> @@ -64,7 +64,7 @@ with_test_prefix "forward" {
>       gdb_test "n" "asm.*fstsw.*"               "store status word in EAX"
>       gdb_test "n" "asm.*fld1.*"                "push st0"
>   
> -    gdb_test "info register eax" "eax *0x8040000.*\[ \t\]+.*"  "verify eax == 0x8040000"
> +    gdb_test "info register ax" "ax *0x0.*\[ \t\]+.*"  "verify eax == 0x0"
>       gdb_test "info register fstat" "fstat *0.*\[ \t\]+.*"      "verify fstat == 0"
>       gdb_test "info register ftag" "ftag *0xffff.*\[ \t\]+.*"   "verify ftag == 0xffff"
>