[PATCH v4] MIPS: Sync elf.h from binutils

[Ying Huang]

Hi Maciej,

>> @@ -1703,6 +1713,35 @@ typedef struct
>>  #define EF_MIPS_ARCH_64		0x60000000 /* MIPS64 code.  */
>>  #define EF_MIPS_ARCH_32R2	0x70000000 /* MIPS32r2 code.  */
>>  #define EF_MIPS_ARCH_64R2	0x80000000 /* MIPS64r2 code.  */
>> +#define E_MIPS_ARCH_32R6	0x90000000 /* -mips32r6 code.  */
>> +#define E_MIPS_ARCH_64R6	0xa0000000 /* -mips64r6 code.  */
>  I think all new additions are supposed to start with EF_ rather than E_.  
> IIUC the existence of E_ macros has something to do with the old SVR4 ABI 
> registry maintained by SCO long ago: you could only add new EF_ macros 
> once they've been registered with SCO (someone please correct me if I'm 
> wrong).
>
>  Also I think the new comments will best be spelt MIPS32r6/MIPS64r6 rather 
> than -mips32r6/-mips64r6 for consistency with MIPS32r2/MIPS64r2 above.
>
Because we did not plan to change binutils E_* to EF_* and hope to sync them to libc, so I would only change related comments.

Thanks for all your suggestions.

Ying