From patchwork Wed Jul 21 16:06:12 2010
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Subject: [ARM] soft/hard-float preprocessor symbol
Date: Wed, 21 Jul 2010 06:06:12 -0000
From: Chung-Lin Tang <cltang@codesourcery.com>
X-Patchwork-Id: 59452
Message-Id: <4C471AF4.4000302@codesourcery.com>
To: gcc-patches <gcc-patches@gcc.gnu.org>

Hi, this patch adds built-in preprocessor symbols __ARM_PCS, 
__ARM_PCS_VFP to indicate the current soft/hard-float calling 
convention, as described in the draft ACLE.

If approved, please help to apply to trunk, as I don't have commit 
rights yet.

Thanks,
Chung-Lin

2010-07-22  Chung-Lin Tang  <cltang@codesourcery.com>

	* config/arm/arm.h (TARGET_CPU_CPP_BUILTINS): Define __ARM_PCS or
	__ARM_PCS_VFP to indicate soft/hard-float calling convention.


Index: arm.h
===================================================================
--- arm.h	(revision 162381)
+++ arm.h	(working copy)
@@ -94,7 +94,13 @@
 	if (arm_arch_iwmmxt)				\
 	  builtin_define ("__IWMMXT__");		\
 	if (TARGET_AAPCS_BASED)				\
-	  builtin_define ("__ARM_EABI__");		\
+	  {						\
+	    if (TARGET_VFP && TARGET_HARD_FLOAT_ABI)	\
+	      builtin_define ("__ARM_PCS_VFP");		\
+	    else					\
+	      builtin_define ("__ARM_PCS");		\
+	    builtin_define ("__ARM_EABI__");		\
+	  }						\
     } while (0)
 
 /* The various ARM cores.  */