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[ARM] Add predefined macro when unaligned access is available.

Message ID 000f01cc7384$4ddfed60$e99fc820$@greenhalgh@arm.com
State New
Headers show

Commit Message

James Greenhalgh Sept. 15, 2011, 8:48 a.m. UTC 
Hi,

This patch adds a predefined macro __ARM_FEATURE_UNALIGNED
which is set when unaligned access is supported in hardware and
enabled by users.

Thanks,
James Greenhalgh

gcc/

2011-09-14  James Greenhalgh  <james.greenhalgh@arm.com>

	* config/arm/arm.h (TARGET_CPU_CPP_BUILTINS):
	New builtin macro.

Comments

Richard Earnshaw Sept. 15, 2011, 10:28 a.m. UTC | #1 
On 15/09/11 09:48, James Greenhalgh wrote:
> Hi,
> 
> This patch adds a predefined macro __ARM_FEATURE_UNALIGNED
> which is set when unaligned access is supported in hardware and
> enabled by users.
> 
> Thanks,
> James Greenhalgh
> 
> gcc/
> 
> 2011-09-14  James Greenhalgh  <james.greenhalgh@arm.com>
> 
> 	* config/arm/arm.h (TARGET_CPU_CPP_BUILTINS):
> 	New builtin macro.
> 

OK.

R.
diff mbox

Patch

diff --git gcc/config/arm/arm.h gcc/config/arm/arm.h
index 208ee51..a76988e 100644
--- gcc/config/arm/arm.h
+++ gcc/config/arm/arm.h
@@ -47,6 +47,8 @@  extern char arm_arch_name[];
     {							\
 	if (TARGET_DSP_MULTIPLY)			\
 	   builtin_define ("__ARM_FEATURE_DSP");	\
+	if (unaligned_access)				\
+	  builtin_define ("__ARM_FEATURE_UNALIGNED");	\
 	/* Define __arm__ even when in thumb mode, for	\
 	   consistency with armcc.  */			\
 	builtin_define ("__arm__");			\