| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* atomic.S: Move this stuff here for better ICACHE hit rates. |
| 2 | * | ||||
| 3 | * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) | ||||
| 4 | */ | ||||
| 5 | |||||
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include <asm/ptrace.h> |
| 7 | #include <asm/psr.h> | ||||
| 8 | |||||
| 9 | .text | ||||
| 10 | .align 4 | ||||
| 11 | |||||
| 12 | .globl __atomic_begin | ||||
| 13 | __atomic_begin: | ||||
| 14 | |||||
| 15 | #ifndef CONFIG_SMP | ||||
| 16 | .globl ___xchg32_sun4c | ||||
| 17 | ___xchg32_sun4c: | ||||
| 18 | rd %psr, %g3 | ||||
| 19 | andcc %g3, PSR_PIL, %g0 | ||||
| 20 | bne 1f | ||||
| 21 | nop | ||||
| 22 | wr %g3, PSR_PIL, %psr | ||||
| 23 | nop; nop; nop | ||||
| 24 | 1: | ||||
| 25 | andcc %g3, PSR_PIL, %g0 | ||||
| 26 | ld [%g1], %g7 | ||||
| 27 | bne 1f | ||||
| 28 | st %g2, [%g1] | ||||
| 29 | wr %g3, 0x0, %psr | ||||
| 30 | nop; nop; nop | ||||
| 31 | 1: | ||||
| 32 | mov %g7, %g2 | ||||
| 33 | jmpl %o7 + 8, %g0 | ||||
| 34 | mov %g4, %o7 | ||||
| 35 | |||||
| 36 | .globl ___xchg32_sun4md | ||||
| 37 | ___xchg32_sun4md: | ||||
| 38 | swap [%g1], %g2 | ||||
| 39 | jmpl %o7 + 8, %g0 | ||||
| 40 | mov %g4, %o7 | ||||
| 41 | #endif | ||||
| 42 | |||||
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | .globl __atomic_end |
| 44 | __atomic_end: | ||||