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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-02-26 21:37:31 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-02-26 21:37:30 (GMT) |
| commit | 987bcdacb18a3adc2a48d85c9b005069c2f4dd7b (patch) | |
| tree | 65da88589e2c95a4677090b570f49402e870e573 /arch/s390/include/asm/processor.h | |
| parent | d1bf85902c28dd990c08f1703ea94109223549a7 (diff) | |
| download | linux-fsl-qoriq-987bcdacb18a3adc2a48d85c9b005069c2f4dd7b.tar.xz | |
[S390] use inline assembly contraints available with gcc 3.3.3
Drop support to compile the kernel with gcc versions older than 3.3.3.
This allows us to use the "Q" inline assembly contraint on some more
inline assemblies without duplicating a lot of complex code (e.g. __xchg
and __cmpxchg). The distinction for older gcc versions can be removed
which saves a few lines and simplifies the code.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index b427154..73e2598 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -28,7 +28,7 @@ static inline void get_cpu_id(struct cpuid *ptr) { - asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr)); + asm volatile("stidp %0" : "=Q" (*ptr)); } extern void s390_adjust_jiffies(void); @@ -184,9 +184,9 @@ static inline void psw_set_key(unsigned int key) static inline void __load_psw(psw_t psw) { #ifndef __s390x__ - asm volatile("lpsw 0(%0)" : : "a" (&psw), "m" (psw) : "cc"); + asm volatile("lpsw %0" : : "Q" (psw) : "cc"); #else - asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc"); + asm volatile("lpswe %0" : : "Q" (psw) : "cc"); #endif } @@ -206,17 +206,17 @@ static inline void __load_psw_mask (unsigned long mask) asm volatile( " basr %0,0\n" "0: ahi %0,1f-0b\n" - " st %0,4(%1)\n" - " lpsw 0(%1)\n" + " st %0,%O1+4(%R1)\n" + " lpsw %1\n" "1:" - : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc"); + : "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc"); #else /* __s390x__ */ asm volatile( " larl %0,1f\n" - " stg %0,8(%1)\n" - " lpswe 0(%1)\n" + " stg %0,%O1+8(%R1)\n" + " lpswe %1\n" "1:" - : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc"); + : "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc"); #endif /* __s390x__ */ } |