On Tue, 3 Aug 2010, David Daney wrote:

quoted text
> diff --git a/arch/mips/include/asm/inst.h b/arch/mips/include/asm/inst.h
> index 6489f00..444ff71 100644
> --- a/arch/mips/include/asm/inst.h
> +++ b/arch/mips/include/asm/inst.h
> @@ -247,6 +247,12 @@ struct ma_format {	/* FPU multipy and add format (MIPS IV) */
>  	unsigned int fmt : 2;
>  };
>  
> +struct b_format { /* BREAK and SYSCALL */
> +	unsigned int opcode:6;
> +	unsigned int code:20;
> +	unsigned int func:6;
> +};
> +
>  #elif defined(__MIPSEL__)
>  
>  struct j_format {	/* Jump format */

 Please note the code field of the BREAK instruction is by toolchain 
convention (bug-compatibility with the original MIPS assembler or 
suchlike) treated as a pair of swapped 10-bit fields -- you may want to 
double-check consistency of interpretation with usage elsewhere.

  Maciej
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