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Re: [PATCH 1/2 roland/arm-sfi-macros] ARM: sfi_breg assembler macro


On Wed, 13 Mar 2013, Roland McGrath wrote:

> 	* sysdeps/arm/sysdep.h [!ARM_SFI_MACROS]
> 	(ARM_SFI_MACROS): Define it.
> 	(sfi_breg, sfi_pld): New assembler macros.
> 	* sysdeps/arm/__longjmp.S: Use them for all memory references not
> 	through the pc or sp registers.
> 	* sysdeps/arm/add_n.S: Likewise.
> 	* sysdeps/arm/addmul_1.S: Likewise.
> 	* sysdeps/arm/arm-mcount.S: Likewise.
> 	* sysdeps/arm/armv6/rawmemchr.S: Likewise.
> 	* sysdeps/arm/armv6/strchr.S: Likewise.
> 	* sysdeps/arm/armv6/strcpy.S: Likewise.
> 	* sysdeps/arm/armv6/strlen.S: Likewise.
> 	* sysdeps/arm/armv6/strrchr.S: Likewise.
> 	* sysdeps/arm/armv6t2/memchr.S: Likewise.
> 	* sysdeps/arm/memcpy.S: Likewise.
> 	* sysdeps/arm/memmove.S: Likewise.
> 	* sysdeps/arm/memset.S: Likewise.
> 	* sysdeps/arm/setjmp.S: Likewise.
> 	* sysdeps/arm/strlen.S: Likewise.
> 	* sysdeps/arm/submul_1.S: Likewise.

OK, supposing that the changes to the iWMMXt code in setjmp / longjmp are 
deliberate to avoid potential confusion from parts of a source file using 
this pattern and other parts not using it.  (Given that the document 
pointed to implies that NaCl will define ARM_ASSUME_NO_IWMMXT, so the 
iWMMXt code won't ever actually be built with the non-null version of this 
macro.)

-- 
Joseph S. Myers
joseph@codesourcery.com


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