mips64 profiling support

[Andreas Jaeger]

Alexandre Oliva <aoliva@redhat.com> writes:

>  /* Call __mcount with our the return PC for our caller,
>     and the return PC our caller will return to.  */

While you're at it, please correct the above comment - and also the
copy of it that you did.  The sentence does not make sense.

>  #ifdef __PIC__
> -#define CPLOAD ".cpload $25;"
> -#define CPRESTORE ".cprestore 44\n\t"
> +# define CPLOAD ".cpload $25;"
> +# define CPRESTORE ".cprestore 44\n\t"
>  #else
> -#define CPLOAD
> -#define CPRESTORE
> +# define CPLOAD
> +# define CPRESTORE
>  #endif
>  
>  #define MCOUNT asm(\
> @@ -66,3 +69,72 @@ static void __attribute_used__ __mcount 
>          ".set reorder;\n\t" \
>          ".set at\n\t" \
>          ".end _mcount");
> +
> +#else
> +
> +/* Call __mcount with our the return PC for our caller,
> +   and the return PC our caller will return to.  */
> +#ifdef __PIC__
> +# define CPSETUP ".cpsetup $25, 88, _mcount;"
> +# define CPRETURN ".cpreturn;"
> +#else
> +# define CPSETUP
> +# define CPRETURN
> +#endif
> +
> +#if defined _ABIN32 && _MIPS_SIM == _ABIN32
> +# define PTR_ADDU_STRING "add" /* no u */
> +# define PTR_SUBU_STRING "sub" /* no u */
> +#elif defined _ABI64 && _MIPS_SIM == _ABI64
> +# define PTR_ADDU_STRING "daddu"
> +# define PTR_SUBU_STRING "dsubu"
> +#else
> +# error "Unknown ABI"
> +#endif
> +
> +#define MCOUNT asm(\
> +	".globl _mcount;\n\t" \
> +	".align 3;\n\t" \
> +	".type _mcount,@function;\n\t" \
> +	".ent _mcount\n\t" \
> +        "_mcount:\n\t" \
> +        ".frame $sp,88,$31\n\t" \
> +        ".set noreorder;\n\t" \
> +        ".set noat;\n\t" \
> +        PTR_SUBU_STRING " $29,$29,96;\n\t" \
> +        CPSETUP \
> +        "sd $4,24($29);\n\t" \
> +        "sd $5,32($29);\n\t" \
> +        "sd $6,40($29);\n\t" \
> +        "sd $7,48($29);\n\t" \
> +        "sd $8,56($29);\n\t" \
> +        "sd $9,64($29);\n\t" \
> +        "sd $10,72($29);\n\t" \
> +        "sd $11,80($29);\n\t" \
> +        "sd $2,16($29);\n\t" \
> +        "sd $1,0($29);\n\t" \
> +        "sd $31,8($29);\n\t" \
> +        "move $5,$31;\n\t" \
> +        "move $4,$1;\n\t" \
> +        "jal __mcount;\n\t" \
> +        "nop;\n\t" \
> +        "ld $4,24($29);\n\t" \
> +        "ld $5,32($29);\n\t" \
> +        "ld $6,40($29);\n\t" \
> +        "ld $7,48($29);\n\t" \
> +        "ld $8,56($29);\n\t" \
> +        "ld $9,64($29);\n\t" \
> +        "ld $10,72($29);\n\t" \
> +        "ld $11,80($29);\n\t" \
> +        "ld $2,16($29);\n\t" \
> +        "ld $31,8($29);\n\t" \
> +        "ld $1,0($29);\n\t" \
> +        CPRETURN \
> +        PTR_ADDU_STRING " $29,$29,96;\n\t" \
> +        "j $31;\n\t" \
> +        "move $31,$1;\n\t" \
> +        ".set reorder;\n\t" \
> +        ".set at\n\t" \
> +        ".end _mcount");
> +
> +#endif

Ok,
Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj