Re: [PATCH] Bug 21053: sh: Reduce namespace pollution from sys/ucontext.h

[Adhemerval Zanella <adhemerval dot zanella at linaro dot org>]

This is a similar fix for similar issue for ARM [1] and I think it is
straightforward enough for inclusion for 2.25.  Any objections?

[1] https://sourceware.org/ml/libc-ports/2011-12/msg00032.html

On 17/01/2017 21:57, James Clarke wrote:
> 	* sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym: Use new REG_R*
> 	constants instead of the old R* ones.
> 	* sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym: Likewise.
> 	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h (NGPREG): Rename...
> 	(NGREG): ... to this, to fit in with other architectures.
> 	(gpregset_t): Use new NGREG macro.
> 	[__USE_GNU]: Remove condition; all architectures other than tile
> 	are unconditional.
> 	(R*): Rename to REG_R*.
> ---
>  sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym | 32 ++++++------
>  sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym | 32 ++++++------
>  sysdeps/unix/sysv/linux/sh/sys/ucontext.h     | 70 +++++++++++++--------------
>  3 files changed, 66 insertions(+), 68 deletions(-)
> 
> diff --git a/sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym b/sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym
> index 17397c5511..25f914a93b 100644
> --- a/sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym
> +++ b/sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.sym
> @@ -13,22 +13,22 @@ SIG_SETMASK
>  oLINK		ucontext (uc_link)
>  oSS_SP		ucontext (uc_stack.ss_sp)
>  oSS_SIZE	ucontext (uc_stack.ss_size)
> -oR0		mcontext (gregs[R0])
> -oR1		mcontext (gregs[R1])
> -oR2		mcontext (gregs[R2])
> -oR3		mcontext (gregs[R3])
> -oR4		mcontext (gregs[R4])
> -oR5		mcontext (gregs[R5])
> -oR6		mcontext (gregs[R6])
> -oR7		mcontext (gregs[R7])
> -oR8		mcontext (gregs[R8])
> -oR9		mcontext (gregs[R9])
> -oR10		mcontext (gregs[R10])
> -oR11		mcontext (gregs[R11])
> -oR12		mcontext (gregs[R12])
> -oR13		mcontext (gregs[R13])
> -oR14		mcontext (gregs[R14])
> -oR15		mcontext (gregs[R15])
> +oR0		mcontext (gregs[REG_R0])
> +oR1		mcontext (gregs[REG_R1])
> +oR2		mcontext (gregs[REG_R2])
> +oR3		mcontext (gregs[REG_R3])
> +oR4		mcontext (gregs[REG_R4])
> +oR5		mcontext (gregs[REG_R5])
> +oR6		mcontext (gregs[REG_R6])
> +oR7		mcontext (gregs[REG_R7])
> +oR8		mcontext (gregs[REG_R8])
> +oR9		mcontext (gregs[REG_R9])
> +oR10		mcontext (gregs[REG_R10])
> +oR11		mcontext (gregs[REG_R11])
> +oR12		mcontext (gregs[REG_R12])
> +oR13		mcontext (gregs[REG_R13])
> +oR14		mcontext (gregs[REG_R14])
> +oR15		mcontext (gregs[REG_R15])
>  oPC		mcontext (pc)
>  oPR		mcontext (pr)
>  oSR		mcontext (sr)
> diff --git a/sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym b/sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym
> index 65633fbcf4..130f60cd96 100644
> --- a/sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym
> +++ b/sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym
> @@ -13,22 +13,22 @@ SIG_SETMASK
>  oLINK		ucontext (uc_link)
>  oSS_SP		ucontext (uc_stack.ss_sp)
>  oSS_SIZE	ucontext (uc_stack.ss_size)
> -oR0		mcontext (gregs[R0])
> -oR1		mcontext (gregs[R1])
> -oR2		mcontext (gregs[R2])
> -oR3		mcontext (gregs[R3])
> -oR4		mcontext (gregs[R4])
> -oR5		mcontext (gregs[R5])
> -oR6		mcontext (gregs[R6])
> -oR7		mcontext (gregs[R7])
> -oR8		mcontext (gregs[R8])
> -oR9		mcontext (gregs[R9])
> -oR10		mcontext (gregs[R10])
> -oR11		mcontext (gregs[R11])
> -oR12		mcontext (gregs[R12])
> -oR13		mcontext (gregs[R13])
> -oR14		mcontext (gregs[R14])
> -oR15		mcontext (gregs[R15])
> +oR0		mcontext (gregs[REG_R0])
> +oR1		mcontext (gregs[REG_R1])
> +oR2		mcontext (gregs[REG_R2])
> +oR3		mcontext (gregs[REG_R3])
> +oR4		mcontext (gregs[REG_R4])
> +oR5		mcontext (gregs[REG_R5])
> +oR6		mcontext (gregs[REG_R6])
> +oR7		mcontext (gregs[REG_R7])
> +oR8		mcontext (gregs[REG_R8])
> +oR9		mcontext (gregs[REG_R9])
> +oR10		mcontext (gregs[REG_R10])
> +oR11		mcontext (gregs[REG_R11])
> +oR12		mcontext (gregs[REG_R12])
> +oR13		mcontext (gregs[REG_R13])
> +oR14		mcontext (gregs[REG_R14])
> +oR15		mcontext (gregs[REG_R15])
>  oPC		mcontext (pc)
>  oPR		mcontext (pr)
>  oSR		mcontext (sr)
> diff --git a/sysdeps/unix/sysv/linux/sh/sys/ucontext.h b/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
> index 3cad368709..9fa479c151 100644
> --- a/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
> +++ b/sysdeps/unix/sysv/linux/sh/sys/ucontext.h
> @@ -32,49 +32,47 @@
>  typedef int greg_t;
>  
>  /* Number of general registers.  */
> -#define NGPREG	16
> +#define NGREG	16
>  
>  /* Container for all general registers.  */
> -typedef greg_t gregset_t[NGPREG];
> +typedef greg_t gregset_t[NGREG];
>  
> -#ifdef __USE_GNU
>  /* Number of each register is the `gregset_t' array.  */
>  enum
>  {
> -  R0 = 0,
> -#define R0	R0
> -  R1 = 1,
> -#define R1	R1
> -  R2 = 2,
> -#define R2	R2
> -  R3 = 3,
> -#define R3	R3
> -  R4 = 4,
> -#define R4	R4
> -  R5 = 5,
> -#define R5	R5
> -  R6 = 6,
> -#define R6	R6
> -  R7 = 7,
> -#define R7	R7
> -  R8 = 8,
> -#define R8	R8
> -  R9 = 9,
> -#define R9	R9
> -  R10 = 10,
> -#define R10	R10
> -  R11 = 11,
> -#define R11	R11
> -  R12 = 12,
> -#define R12	R12
> -  R13 = 13,
> -#define R13	R13
> -  R14 = 14,
> -#define R14	R14
> -  R15 = 15,
> -#define R15	R15
> +  REG_R0 = 0,
> +#define REG_R0	REG_R0
> +  REG_R1 = 1,
> +#define REG_R1	REG_R1
> +  REG_R2 = 2,
> +#define REG_R2	REG_R2
> +  REG_R3 = 3,
> +#define REG_R3	REG_R3
> +  REG_R4 = 4,
> +#define REG_R4	REG_R4
> +  REG_R5 = 5,
> +#define REG_R5	REG_R5
> +  REG_R6 = 6,
> +#define REG_R6	REG_R6
> +  REG_R7 = 7,
> +#define REG_R7	REG_R7
> +  REG_R8 = 8,
> +#define REG_R8	REG_R8
> +  REG_R9 = 9,
> +#define REG_R9	REG_R9
> +  REG_R10 = 10,
> +#define REG_R10	REG_R10
> +  REG_R11 = 11,
> +#define REG_R11	REG_R11
> +  REG_R12 = 12,
> +#define REG_R12	REG_R12
> +  REG_R13 = 13,
> +#define REG_R13	REG_R13
> +  REG_R14 = 14,
> +#define REG_R14	REG_R14
> +  REG_R15 = 15,
> +#define REG_R15	REG_R15
>  };
> -#endif
>  
>  typedef int freg_t;
>  
>