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| author | Stelian Pop <stelian@popies.net> | 2007-03-15 16:54:27 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-03-15 20:39:16 +0000 |
| commit | 0803c30c23d39e1db88d06ef59c30fa5ef6c3ada (patch) | |
| tree | ad49bc8abc07ce2d8e985b727e3df71548bd49ce | |
| parent | 66fb8bd209926140844830762164a44afdbf44ef (diff) | |
| download | linux-3.10-0803c30c23d39e1db88d06ef59c30fa5ef6c3ada.tar.gz linux-3.10-0803c30c23d39e1db88d06ef59c30fa5ef6c3ada.tar.bz2 linux-3.10-0803c30c23d39e1db88d06ef59c30fa5ef6c3ada.zip | |
[ARM] 4264/1: ldrex/strex syntax errors with recent compilers
Trying to build some code using atomic_clear_mask() on a ARM v6
processor with a recent compiler (tried with gcc version 4.1.1
(CodeSourcery ARM Sourcery G++ 2006q3-26), but
all gcc > 4.1 might be affected) results in the following:
/tmp/ccWKLJV8.s: Assembler messages:
/tmp/ccWKLJV8.s:581: Error: instruction does not accept this addressing
mode -- `ldrex r0,r3'
/tmp/ccWKLJV8.s:583: Error: instruction does not accept this addressing
mode -- `strex r1,r0,r3'
Older gcc (like gcc version 4.0.0 (DENX ELDK 4.1 4.0.0)) have no problem
with this.
The patch below fixes the compile error. I also verified that gcc-4.0.0 generates identical code using both forms.
Signed-off-by: Stelian Pop <stelian@popies.net>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | include/asm-arm/atomic.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-arm/atomic.h b/include/asm-arm/atomic.h index ea88aa6bfc7..f266c279512 100644 --- a/include/asm-arm/atomic.h +++ b/include/asm-arm/atomic.h @@ -103,9 +103,9 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) unsigned long tmp, tmp2; __asm__ __volatile__("@ atomic_clear_mask\n" -"1: ldrex %0, %2\n" +"1: ldrex %0, [%2]\n" " bic %0, %0, %3\n" -" strex %1, %0, %2\n" +" strex %1, %0, [%2]\n" " teq %1, #0\n" " bne 1b" : "=&r" (tmp), "=&r" (tmp2) |