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authorClaudio Scordino <claudio@evidence.eu.com>2009-10-30 07:06:05 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-11-02 11:59:45 -0500
commit6603a4fd5195a004dec5f9568e38ff76bae630c1 (patch)
treea623de325bbe8e4ba024daee6bc8263f6da69180 /arch
parent426fcd2a351e4bf662fee9fa2cf2603a48223164 (diff)
ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
ARM unwind is known to compile only with EABI and not-buggy compilers. The problem is not the unwinding information but the -fno-frame-pointer option added as a result of !CONFIG_FRAME_POINTER. Now we check the compiler and raise a #warning in case of wrong compiler. Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/unwind.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 39baf1128bfa..786ac2b6914a 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -26,6 +26,15 @@
26 * http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html 26 * http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html
27 */ 27 */
28 28
29#if !defined (__ARM_EABI__)
30#warning Your compiler does not have EABI support.
31#warning ARM unwind is known to compile only with EABI compilers.
32#warning Change compiler or disable ARM_UNWIND option.
33#elif (__GNUC__ == 4 && __GNUC_MINOR__ <= 2)
34#warning Your compiler is too buggy; it is known to not compile ARM unwind support.
35#warning Change compiler or disable ARM_UNWIND option.
36#endif
37
29#include <linux/kernel.h> 38#include <linux/kernel.h>
30#include <linux/init.h> 39#include <linux/init.h>
31#include <linux/module.h> 40#include <linux/module.h>