diff options
| author | Stefan Agner <stefan@agner.ch> | 2019-01-24 21:43:40 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2019-02-01 21:44:15 +0000 |
| commit | eb7ff9023e4f2998d527b37bffe794759800332a (patch) | |
| tree | 878af160c3f54133610c71dd74f7256fee8e9edf | |
| parent | 32fdb046ac43aa884d960165072ca37b26d78543 (diff) | |
| download | lwn-eb7ff9023e4f2998d527b37bffe794759800332a.tar.gz lwn-eb7ff9023e4f2998d527b37bffe794759800332a.zip | |
ARM: 8829/1: spinlock: use unified assembler language syntax
Convert the conditional infix to a postfix to make sure this inline
assembly is unified syntax. Since gcc assumes non-unified syntax
when emitting ARM instructions, make sure to define the syntax as
unified.
This allows to use LLVM's integrated assembler.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/spinlock.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h index 099c78fcf62d..8f009e788ad4 100644 --- a/arch/arm/include/asm/spinlock.h +++ b/arch/arm/include/asm/spinlock.h @@ -210,11 +210,12 @@ static inline void arch_read_lock(arch_rwlock_t *rw) prefetchw(&rw->lock); __asm__ __volatile__( +" .syntax unified\n" "1: ldrex %0, [%2]\n" " adds %0, %0, #1\n" " strexpl %1, %0, [%2]\n" WFE("mi") -" rsbpls %0, %1, #0\n" +" rsbspl %0, %1, #0\n" " bmi 1b" : "=&r" (tmp), "=&r" (tmp2) : "r" (&rw->lock) |