diff options
| author | David S. Miller <davem@nuts.ninka.net> | 2003-03-24 15:04:02 -0800 |
|---|---|---|
| committer | David S. Miller <davem@nuts.ninka.net> | 2003-03-24 15:04:02 -0800 |
| commit | 431ec6ac1e320fca6af8c44b3b9feb32c3f40f5e (patch) | |
| tree | 3e6410eddd99eede469d6a35e77a0a50c1354283 /include | |
| parent | 855fb09556d2db5934a854f5de835715ccf7aeb3 (diff) | |
[SPARC64]: Uninline rwsem assembler.
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sparc64/rwsem.h | 228 |
1 files changed, 7 insertions, 221 deletions
diff --git a/include/asm-sparc64/rwsem.h b/include/asm-sparc64/rwsem.h index 7d3e788980e1..82fffac5b0b8 100644 --- a/include/asm-sparc64/rwsem.h +++ b/include/asm-sparc64/rwsem.h @@ -18,11 +18,6 @@ struct rwsem_waiter; -extern struct rw_semaphore *FASTCALL(rwsem_down_read_failed(struct rw_semaphore *sem)); -extern struct rw_semaphore *FASTCALL(rwsem_down_write_failed(struct rw_semaphore *sem)); -extern struct rw_semaphore *FASTCALL(rwsem_wake(struct rw_semaphore *)); -extern struct rw_semaphore *FASTCALL(rwsem_downgrade_wake(struct rw_semaphore *)); - struct rw_semaphore { signed int count; #define RWSEM_UNLOCKED_VALUE 0x00000000 @@ -48,222 +43,13 @@ static __inline__ void init_rwsem(struct rw_semaphore *sem) INIT_LIST_HEAD(&sem->wait_list); } -static __inline__ void __down_read(struct rw_semaphore *sem) -{ - __asm__ __volatile__( - "! beginning __down_read\n" - "1:\tlduw [%0], %%g5\n\t" - "add %%g5, 1, %%g7\n\t" - "cas [%0], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " add %%g7, 1, %%g7\n\t" - "cmp %%g7, 0\n\t" - "bl,pn %%icc, 3f\n\t" - " membar #StoreLoad | #StoreStore\n" - "2:\n\t" - ".subsection 2\n" - "3:\tmov %0, %%g5\n\t" - "save %%sp, -160, %%sp\n\t" - "mov %%g1, %%l1\n\t" - "mov %%g2, %%l2\n\t" - "mov %%g3, %%l3\n\t" - "call %1\n\t" - " mov %%g5, %%o0\n\t" - "mov %%l1, %%g1\n\t" - "mov %%l2, %%g2\n\t" - "ba,pt %%xcc, 2b\n\t" - " restore %%l3, %%g0, %%g3\n\t" - ".previous\n\t" - "! ending __down_read" - : : "r" (sem), "i" (rwsem_down_read_failed) - : "g5", "g7", "memory", "cc"); -} - -static __inline__ int __down_read_trylock(struct rw_semaphore *sem) -{ - int result; - - __asm__ __volatile__( - "! beginning __down_read_trylock\n" - "1:\tlduw [%1], %%g5\n\t" - "add %%g5, 1, %%g7\n\t" - "cmp %%g7, 0\n\t" - "bl,pn %%icc, 2f\n\t" - " mov 0, %0\n\t" - "cas [%1], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " mov 1, %0\n\t" - "membar #StoreLoad | #StoreStore\n" - "2:\n\t" - "! ending __down_read_trylock" - : "=&r" (result) - : "r" (sem) - : "g5", "g7", "memory", "cc"); - - return result; -} - -static __inline__ void __down_write(struct rw_semaphore *sem) -{ - __asm__ __volatile__( - "! beginning __down_write\n\t" - "sethi %%hi(%2), %%g1\n\t" - "or %%g1, %%lo(%2), %%g1\n" - "1:\tlduw [%0], %%g5\n\t" - "add %%g5, %%g1, %%g7\n\t" - "cas [%0], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " cmp %%g7, 0\n\t" - "bne,pn %%icc, 3f\n\t" - " membar #StoreLoad | #StoreStore\n" - "2:\n\t" - ".subsection 2\n" - "3:\tmov %0, %%g5\n\t" - "save %%sp, -160, %%sp\n\t" - "mov %%g2, %%l2\n\t" - "mov %%g3, %%l3\n\t" - "call %1\n\t" - " mov %%g5, %%o0\n\t" - "mov %%l2, %%g2\n\t" - "ba,pt %%xcc, 2b\n\t" - " restore %%l3, %%g0, %%g3\n\t" - ".previous\n\t" - "! ending __down_write" - : : "r" (sem), "i" (rwsem_down_write_failed), - "i" (RWSEM_ACTIVE_WRITE_BIAS) - : "g1", "g5", "g7", "memory", "cc"); -} - -static __inline__ int __down_write_trylock(struct rw_semaphore *sem) -{ - int result; - - __asm__ __volatile__( - "! beginning __down_write_trylock\n\t" - "sethi %%hi(%2), %%g1\n\t" - "or %%g1, %%lo(%2), %%g1\n" - "1:\tlduw [%1], %%g5\n\t" - "cmp %%g5, 0\n\t" - "bne,pn %%icc, 2f\n\t" - " mov 0, %0\n\t" - "add %%g5, %%g1, %%g7\n\t" - "cas [%1], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " mov 1, %0\n\t" - "membar #StoreLoad | #StoreStore\n" - "2:\n\t" - "! ending __down_write_trylock" - : "=&r" (result) - : "r" (sem), "i" (RWSEM_ACTIVE_WRITE_BIAS) - : "g1", "g5", "g7", "memory", "cc"); - - return result; -} - -static __inline__ void __up_read(struct rw_semaphore *sem) -{ - __asm__ __volatile__( - "! beginning __up_read\n\t" - "1:\tlduw [%0], %%g5\n\t" - "sub %%g5, 1, %%g7\n\t" - "cas [%0], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " cmp %%g7, 0\n\t" - "bl,pn %%icc, 3f\n\t" - " membar #StoreLoad | #StoreStore\n" - "2:\n\t" - ".subsection 2\n" - "3:\tsethi %%hi(%2), %%g1\n\t" - "sub %%g7, 1, %%g7\n\t" - "or %%g1, %%lo(%2), %%g1\n\t" - "andcc %%g7, %%g1, %%g0\n\t" - "bne,pn %%icc, 2b\n\t" - " mov %0, %%g5\n\t" - "save %%sp, -160, %%sp\n\t" - "mov %%g2, %%l2\n\t" - "mov %%g3, %%l3\n\t" - "call %1\n\t" - " mov %%g5, %%o0\n\t" - "mov %%l2, %%g2\n\t" - "ba,pt %%xcc, 2b\n\t" - " restore %%l3, %%g0, %%g3\n\t" - ".previous\n\t" - "! ending __up_read" - : : "r" (sem), "i" (rwsem_wake), - "i" (RWSEM_ACTIVE_MASK) - : "g1", "g5", "g7", "memory", "cc"); -} - -static __inline__ void __up_write(struct rw_semaphore *sem) -{ - __asm__ __volatile__( - "! beginning __up_write\n\t" - "sethi %%hi(%2), %%g1\n\t" - "or %%g1, %%lo(%2), %%g1\n" - "1:\tlduw [%0], %%g5\n\t" - "sub %%g5, %%g1, %%g7\n\t" - "cas [%0], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " sub %%g7, %%g1, %%g7\n\t" - "cmp %%g7, 0\n\t" - "bl,pn %%icc, 3f\n\t" - " membar #StoreLoad | #StoreStore\n" - "2:\n\t" - ".subsection 2\n" - "3:\tmov %0, %%g5\n\t" - "save %%sp, -160, %%sp\n\t" - "mov %%g2, %%l2\n\t" - "mov %%g3, %%l3\n\t" - "call %1\n\t" - " mov %%g5, %%o0\n\t" - "mov %%l2, %%g2\n\t" - "ba,pt %%xcc, 2b\n\t" - " restore %%l3, %%g0, %%g3\n\t" - ".previous\n\t" - "! ending __up_write" - : : "r" (sem), "i" (rwsem_wake), - "i" (RWSEM_ACTIVE_WRITE_BIAS) - : "g1", "g5", "g7", "memory", "cc"); -} - -static __inline__ void __downgrade_write(struct rw_semaphore *sem) -{ - __asm__ __volatile__( - "! beginning __up_write\n\t" - "sethi %%hi(%2), %%g1\n\t" - "or %%g1, %%lo(%2), %%g1\n" - "1:\tlduw [%0], %%g5\n\t" - "sub %%g5, %%g1, %%g7\n\t" - "cas [%0], %%g5, %%g7\n\t" - "cmp %%g5, %%g7\n\t" - "bne,pn %%icc, 1b\n\t" - " sub %%g7, %%g1, %%g7\n\t" - "cmp %%g7, 0\n\t" - "bl,pn %%icc, 3f\n\t" - " membar #StoreLoad | #StoreStore\n" - "2:\n\t" - ".subsection 2\n" - "3:\tmov %0, %%g5\n\t" - "save %%sp, -160, %%sp\n\t" - "mov %%g2, %%l2\n\t" - "mov %%g3, %%l3\n\t" - "call %1\n\t" - " mov %%g5, %%o0\n\t" - "mov %%l2, %%g2\n\t" - "ba,pt %%xcc, 2b\n\t" - " restore %%l3, %%g0, %%g3\n\t" - ".previous\n\t" - "! ending __up_write" - : : "r" (sem), "i" (rwsem_downgrade_wake), - "i" (RWSEM_WAITING_BIAS) - : "g1", "g5", "g7", "memory", "cc"); -} +extern void __down_read(struct rw_semaphore *sem); +extern int __down_read_trylock(struct rw_semaphore *sem); +extern void __down_write(struct rw_semaphore *sem); +extern int __down_write_trylock(struct rw_semaphore *sem); +extern void __up_read(struct rw_semaphore *sem); +extern void __up_write(struct rw_semaphore *sem); +extern void __downgrade_write(struct rw_semaphore *sem); static __inline__ int rwsem_atomic_update(int delta, struct rw_semaphore *sem) { |
