[ARM] 4264/1: ldrex/strex syntax errors with recent compilers
commit0803c30c23d39e1db88d06ef59c30fa5ef6c3ada
authorStelian Pop <stelian@popies.net>
Thu, 15 Mar 2007 15:54:27 +0000 (15 16:54 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Thu, 15 Mar 2007 20:39:16 +0000 (15 20:39 +0000)
treead49bc8abc07ce2d8e985b727e3df71548bd49ce
parent66fb8bd209926140844830762164a44afdbf44ef
[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>
include/asm-arm/atomic.h