diff options
| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 1999-06-22 22:12:59 +0000 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 1999-06-22 22:12:59 +0000 |
| commit | 52273a23c9a84336b93a35e4847fc88fac7eb0e4 (patch) | |
| tree | 77ff0727779f408a0824168988235cf2b0f806fd /include | |
| parent | 43ff5e29a8d29c9c8da2d67f83fe6441a390a1dd (diff) | |
added little endian version of new semaphore code. Probably still buggy:-(
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-mips/semaphore-helper.h | 30 | ||||
| -rw-r--r-- | include/asm-mips/semaphore.h | 27 |
2 files changed, 54 insertions, 3 deletions
diff --git a/include/asm-mips/semaphore-helper.h b/include/asm-mips/semaphore-helper.h index 59337b898..95210135f 100644 --- a/include/asm-mips/semaphore-helper.h +++ b/include/asm-mips/semaphore-helper.h @@ -92,7 +92,35 @@ waking_non_zero_interruptible(struct semaphore *sem, struct task_struct *tsk) #endif #ifdef __MIPSEL__ -#error "FIXME: waking_non_zero_interruptible doesn't support little endian machines yet." + __asm__ __volatile__(" + .set mips3 + .set push + .set noat +0: lld %1,%2 + li %0,0 + + bltz %1, 1f + dli $1, 0xffffffff00000000 + daddu %1, $1 + li %0, 1 + b 2f +1: + + beqz %3, 1f + addiu $1, %1, 1 + dsrl32 %1, %1, 0 + dsll32 %1, %1, 0 + or %1, $1 + li %0, %4 + b 2f +1: + scd %1, %2 +2: + beqz %1,0b + .set pop + .set mips0" + : "=&r"(ret), "=&r"(tmp), "=m"(*sem) + : "r"(signal_pending(tsk)), "i"(-EINTR)); #endif return ret; diff --git a/include/asm-mips/semaphore.h b/include/asm-mips/semaphore.h index 302f4ff7d..1f713fe49 100644 --- a/include/asm-mips/semaphore.h +++ b/include/asm-mips/semaphore.h @@ -1,4 +1,4 @@ -/* $Id: semaphore.h,v 1.7 1999/06/11 14:30:15 ralf Exp $ +/* $Id: semaphore.h,v 1.6 1999/06/17 13:30:38 ralf Exp $ * * SMP- and interrupt-safe semaphores.. * @@ -133,7 +133,30 @@ extern inline int down_trylock(struct semaphore * sem) #endif #ifdef __MIPSEL__ -#error "FIXME: down_trylock doesn't support little endian machines yet." + __asm__ __volatile__(" + .set mips3 + 0: lld %1, %4 + dli %3, 0x0000000100000000 + sltu %0, %1, $0 + + bltz %1, 1f + move %3, $0 + 1: + + sltu %2, %1, $0 + and %0, %0, %2 + bnez %0, 2f + + subu %0, %3 + scd %1, %4 + + beqz %1, 0b + 2: + + .set mips0" + : "=&r"(ret), "=&r"(tmp), "=&r"(tmp2), "=&r"(sub) + : "m"(*sem) + : "memory"); #endif return ret; |