From aac8aa7717a23a9bf8740dbfb59755b1d62f04bf Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Tue, 14 Jun 2005 17:35:03 +0000 Subject: [PATCH] Enable a suitable ISA for the assembler around ll/sc so that code builds even for processors that don't support the instructions. Plus minor formatting fixes. Signed-off-by: Ralf Baechle --- arch/mips/kernel/semaphore.c | 12 ++++-- include/asm-mips/atomic.h | 40 +++++++++++++++++++ include/asm-mips/bitops.h | 74 ++++++++++++++++++++++++------------ include/asm-mips/system.h | 24 ++++++++++-- 4 files changed, 118 insertions(+), 32 deletions(-) diff --git a/arch/mips/kernel/semaphore.c b/arch/mips/kernel/semaphore.c index 9c40fe5a8e..dbb145ee00 100644 --- a/arch/mips/kernel/semaphore.c +++ b/arch/mips/kernel/semaphore.c @@ -42,24 +42,28 @@ static inline int __sem_update_count(struct semaphore *sem, int incr) if (cpu_has_llsc && R10000_LLSC_WAR) { __asm__ __volatile__( - "1: ll %0, %2 \n" + " .set mips2 \n" + "1: ll %0, %2 # __sem_update_count \n" " sra %1, %0, 31 \n" " not %1 \n" " and %1, %0, %1 \n" - " add %1, %1, %3 \n" + " addu %1, %1, %3 \n" " sc %1, %2 \n" " beqzl %1, 1b \n" + " .set mips0 \n" : "=&r" (old_count), "=&r" (tmp), "=m" (sem->count) : "r" (incr), "m" (sem->count)); } else if (cpu_has_llsc) { __asm__ __volatile__( - "1: ll %0, %2 \n" + " .set mips2 \n" + "1: ll %0, %2 # __sem_update_count \n" " sra %1, %0, 31 \n" " not %1 \n" " and %1, %0, %1 \n" - " add %1, %1, %3 \n" + " addu %1, %1, %3 \n" " sc %1, %2 \n" " beqz %1, 1b \n" + " .set mips0 \n" : "=&r" (old_count), "=&r" (tmp), "=m" (sem->count) : "r" (incr), "m" (sem->count)); } else { diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h index c0bd8d014e..80ea3fbd3e 100644 --- a/include/asm-mips/atomic.h +++ b/include/asm-mips/atomic.h @@ -62,20 +62,24 @@ static __inline__ void atomic_add(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %1 # atomic_add \n" " addu %0, %2 \n" " sc %0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else if (cpu_has_llsc) { unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %1 # atomic_add \n" " addu %0, %2 \n" " sc %0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else { @@ -100,20 +104,24 @@ static __inline__ void atomic_sub(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %1 # atomic_sub \n" " subu %0, %2 \n" " sc %0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else if (cpu_has_llsc) { unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %1 # atomic_sub \n" " subu %0, %2 \n" " sc %0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else { @@ -136,12 +144,14 @@ static __inline__ int atomic_add_return(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_add_return \n" " addu %0, %1, %3 \n" " sc %0, %2 \n" " beqzl %0, 1b \n" " addu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -149,12 +159,14 @@ static __inline__ int atomic_add_return(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_add_return \n" " addu %0, %1, %3 \n" " sc %0, %2 \n" " beqz %0, 1b \n" " addu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -179,12 +191,14 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_sub_return \n" " subu %0, %1, %3 \n" " sc %0, %2 \n" " beqzl %0, 1b \n" " subu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -192,12 +206,14 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_sub_return \n" " subu %0, %1, %3 \n" " sc %0, %2 \n" " beqz %0, 1b \n" " subu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -229,6 +245,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_sub_if_positive\n" " subu %0, %1, %3 \n" " bltz %0, 1f \n" @@ -236,6 +253,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) " beqzl %0, 1b \n" " sync \n" "1: \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -243,6 +261,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips2 \n" "1: ll %1, %2 # atomic_sub_if_positive\n" " subu %0, %1, %3 \n" " bltz %0, 1f \n" @@ -250,6 +269,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) " beqz %0, 1b \n" " sync \n" "1: \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -367,20 +387,24 @@ static __inline__ void atomic64_add(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %1 # atomic64_add \n" " addu %0, %2 \n" " scd %0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else if (cpu_has_llsc) { unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %1 # atomic64_add \n" " addu %0, %2 \n" " scd %0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else { @@ -405,20 +429,24 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %1 # atomic64_sub \n" " subu %0, %2 \n" " scd %0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else if (cpu_has_llsc) { unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %1 # atomic64_sub \n" " subu %0, %2 \n" " scd %0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter)); } else { @@ -441,12 +469,14 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_add_return \n" " addu %0, %1, %3 \n" " scd %0, %2 \n" " beqzl %0, 1b \n" " addu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -454,12 +484,14 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_add_return \n" " addu %0, %1, %3 \n" " scd %0, %2 \n" " beqz %0, 1b \n" " addu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -484,12 +516,14 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_sub_return \n" " subu %0, %1, %3 \n" " scd %0, %2 \n" " beqzl %0, 1b \n" " subu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -497,12 +531,14 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_sub_return \n" " subu %0, %1, %3 \n" " scd %0, %2 \n" " beqz %0, 1b \n" " subu %0, %1, %3 \n" " sync \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -534,6 +570,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_sub_if_positive\n" " dsubu %0, %1, %3 \n" " bltz %0, 1f \n" @@ -541,6 +578,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) " beqzl %0, 1b \n" " sync \n" "1: \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); @@ -548,6 +586,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) unsigned long temp; __asm__ __volatile__( + " .set mips3 \n" "1: lld %1, %2 # atomic64_sub_if_positive\n" " dsubu %0, %1, %3 \n" " bltz %0, 1f \n" @@ -555,6 +594,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) " beqz %0, 1b \n" " sync \n" "1: \n" + " .set mips0 \n" : "=&r" (result), "=&r" (temp), "=m" (v->counter) : "Ir" (i), "m" (v->counter) : "memory"); diff --git a/include/asm-mips/bitops.h b/include/asm-mips/bitops.h index eb8d79dba1..1dc35879b3 100644 --- a/include/asm-mips/bitops.h +++ b/include/asm-mips/bitops.h @@ -18,14 +18,16 @@ #if (_MIPS_SZLONG == 32) #define SZLONG_LOG 5 #define SZLONG_MASK 31UL -#define __LL "ll " -#define __SC "sc " +#define __LL "ll " +#define __SC "sc " +#define __SET_MIPS ".set mips2 " #define cpu_to_lelongp(x) cpu_to_le32p((__u32 *) (x)) #elif (_MIPS_SZLONG == 64) #define SZLONG_LOG 6 #define SZLONG_MASK 63UL -#define __LL "lld " -#define __SC "scd " +#define __LL "lld " +#define __SC "scd " +#define __SET_MIPS ".set mips3 " #define cpu_to_lelongp(x) cpu_to_le64p((__u64 *) (x)) #endif @@ -72,18 +74,22 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr) if (cpu_has_llsc && R10000_LLSC_WAR) { __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # set_bit \n" " or %0, %2 \n" - " "__SC "%0, %1 \n" + " " __SC "%0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m)); } else if (cpu_has_llsc) { __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # set_bit \n" " or %0, %2 \n" - " "__SC "%0, %1 \n" + " " __SC "%0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m)); } else { @@ -132,18 +138,22 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr) if (cpu_has_llsc && R10000_LLSC_WAR) { __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # clear_bit \n" " and %0, %2 \n" " " __SC "%0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (~(1UL << (nr & SZLONG_MASK))), "m" (*m)); } else if (cpu_has_llsc) { __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # clear_bit \n" " and %0, %2 \n" " " __SC "%0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (~(1UL << (nr & SZLONG_MASK))), "m" (*m)); } else { @@ -191,10 +201,12 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr) unsigned long temp; __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # change_bit \n" " xor %0, %2 \n" - " "__SC "%0, %1 \n" + " " __SC "%0, %1 \n" " beqzl %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m)); } else if (cpu_has_llsc) { @@ -202,10 +214,12 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr) unsigned long temp; __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # change_bit \n" " xor %0, %2 \n" - " "__SC "%0, %1 \n" + " " __SC "%0, %1 \n" " beqz %0, 1b \n" + " .set mips0 \n" : "=&r" (temp), "=m" (*m) : "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m)); } else { @@ -253,14 +267,16 @@ static inline int test_and_set_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # test_and_set_bit \n" " or %2, %0, %3 \n" " " __SC "%2, %1 \n" " beqzl %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP - "sync \n" + " sync \n" #endif + " .set mips0 \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); @@ -271,16 +287,18 @@ static inline int test_and_set_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( - " .set noreorder # test_and_set_bit \n" - "1: " __LL "%0, %1 \n" + " .set push \n" + " .set noreorder \n" + " " __SET_MIPS " \n" + "1: " __LL "%0, %1 # test_and_set_bit \n" " or %2, %0, %3 \n" " " __SC "%2, %1 \n" " beqz %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP - "sync \n" + " sync \n" #endif - ".set\treorder" + " .set pop \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); @@ -343,15 +361,17 @@ static inline int test_and_clear_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( + " " __SET_MIPS " \n" "1: " __LL "%0, %1 # test_and_clear_bit \n" " or %2, %0, %3 \n" " xor %2, %3 \n" - __SC "%2, %1 \n" + " " __SC "%2, %1 \n" " beqzl %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); @@ -362,17 +382,19 @@ static inline int test_and_clear_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( - " .set noreorder # test_and_clear_bit \n" - "1: " __LL "%0, %1 \n" + " .set push \n" + " .set noreorder \n" + " " __SET_MIPS " \n" + "1: " __LL "%0, %1 # test_and_clear_bit \n" " or %2, %0, %3 \n" " xor %2, %3 \n" - __SC "%2, %1 \n" + " " __SC "%2, %1 \n" " beqz %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP " sync \n" #endif - " .set reorder \n" + " .set pop \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); @@ -435,14 +457,16 @@ static inline int test_and_change_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( - "1: " __LL " %0, %1 # test_and_change_bit \n" + " " __SET_MIPS " \n" + "1: " __LL "%0, %1 # test_and_change_bit \n" " xor %2, %0, %3 \n" - " "__SC "%2, %1 \n" + " " __SC "%2, %1 \n" " beqzl %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); @@ -453,16 +477,18 @@ static inline int test_and_change_bit(unsigned long nr, unsigned long temp, res; __asm__ __volatile__( - " .set noreorder # test_and_change_bit \n" - "1: " __LL " %0, %1 \n" + " .set push \n" + " .set noreorder \n" + " " __SET_MIPS " \n" + "1: " __LL "%0, %1 # test_and_change_bit \n" " xor %2, %0, %3 \n" - " "__SC "\t%2, %1 \n" + " " __SC "\t%2, %1 \n" " beqz %2, 1b \n" " and %2, %0, %3 \n" #ifdef CONFIG_SMP " sync \n" #endif - " .set reorder \n" + " .set pop \n" : "=&r" (temp), "=m" (*m), "=&r" (res) : "r" (1UL << (nr & SZLONG_MASK)), "m" (*m) : "memory"); diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h index cd3a6bca7a..ec29c9349e 100644 --- a/include/asm-mips/system.h +++ b/include/asm-mips/system.h @@ -176,6 +176,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) unsigned long dummy; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %3 # xchg_u32 \n" " move %2, %z4 \n" " sc %2, %1 \n" @@ -184,6 +185,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); @@ -191,6 +193,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) unsigned long dummy; __asm__ __volatile__( + " .set mips2 \n" "1: ll %0, %3 # xchg_u32 \n" " move %2, %z4 \n" " sc %2, %1 \n" @@ -198,6 +201,7 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); @@ -222,6 +226,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) unsigned long dummy; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %3 # xchg_u64 \n" " move %2, %z4 \n" " scd %2, %1 \n" @@ -230,6 +235,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); @@ -237,6 +243,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) unsigned long dummy; __asm__ __volatile__( + " .set mips3 \n" "1: lld %0, %3 # xchg_u64 \n" " move %2, %z4 \n" " scd %2, %1 \n" @@ -244,6 +251,7 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val) #ifdef CONFIG_SMP " sync \n" #endif + " .set mips0 \n" : "=&r" (retval), "=m" (*m), "=&r" (dummy) : "R" (*m), "Jr" (val) : "memory"); @@ -291,7 +299,9 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old, if (cpu_has_llsc && R10000_LLSC_WAR) { __asm__ __volatile__( + " .set push \n" " .set noat \n" + " .set mips2 \n" "1: ll %0, %2 # __cmpxchg_u32 \n" " bne %0, %z3, 2f \n" " move $1, %z4 \n" @@ -302,13 +312,15 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old, " sync \n" #endif "2: \n" - " .set at \n" + " .set pop \n" : "=&r" (retval), "=m" (*m) : "R" (*m), "Jr" (old), "Jr" (new) : "memory"); } else if (cpu_has_llsc) { __asm__ __volatile__( + " .set push \n" " .set noat \n" + " .set mips2 \n" "1: ll %0, %2 # __cmpxchg_u32 \n" " bne %0, %z3, 2f \n" " move $1, %z4 \n" @@ -318,7 +330,7 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old, " sync \n" #endif "2: \n" - " .set at \n" + " .set pop \n" : "=&r" (retval), "=m" (*m) : "R" (*m), "Jr" (old), "Jr" (new) : "memory"); @@ -343,7 +355,9 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old, if (cpu_has_llsc) { __asm__ __volatile__( + " .set push \n" " .set noat \n" + " .set mips3 \n" "1: lld %0, %2 # __cmpxchg_u64 \n" " bne %0, %z3, 2f \n" " move $1, %z4 \n" @@ -354,13 +368,15 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old, " sync \n" #endif "2: \n" - " .set at \n" + " .set pop \n" : "=&r" (retval), "=m" (*m) : "R" (*m), "Jr" (old), "Jr" (new) : "memory"); } else if (cpu_has_llsc) { __asm__ __volatile__( + " .set push \n" " .set noat \n" + " .set mips2 \n" "1: lld %0, %2 # __cmpxchg_u64 \n" " bne %0, %z3, 2f \n" " move $1, %z4 \n" @@ -370,7 +386,7 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old, " sync \n" #endif "2: \n" - " .set at \n" + " .set pop \n" : "=&r" (retval), "=m" (*m) : "R" (*m), "Jr" (old), "Jr" (new) : "memory"); -- 2.39.5