diff options
Diffstat (limited to 'src/runtime/atomic_arm64.s')
| -rw-r--r-- | src/runtime/atomic_arm64.s | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/src/runtime/atomic_arm64.s b/src/runtime/atomic_arm64.s index d3ab2a121c..4704aa6ffc 100644 --- a/src/runtime/atomic_arm64.s +++ b/src/runtime/atomic_arm64.s @@ -4,114 +4,6 @@ #include "textflag.h" -// uint32 runtime·atomicload(uint32 volatile* addr) -TEXT ·atomicload(SB),NOSPLIT,$-8-12 - MOVD ptr+0(FP), R0 - LDARW (R0), R0 - MOVW R0, ret+8(FP) - RET - -// uint64 runtime·atomicload64(uint64 volatile* addr) -TEXT ·atomicload64(SB),NOSPLIT,$-8-16 - MOVD ptr+0(FP), R0 - LDAR (R0), R0 - MOVD R0, ret+8(FP) - RET - -// void *runtime·atomicloadp(void *volatile *addr) -TEXT ·atomicloadp(SB),NOSPLIT,$-8-16 - MOVD ptr+0(FP), R0 - LDAR (R0), R0 - MOVD R0, ret+8(FP) - RET - -TEXT runtime·atomicstorep1(SB), NOSPLIT, $0-16 - B runtime·atomicstore64(SB) - -TEXT runtime·atomicstore(SB), NOSPLIT, $0-12 - MOVD ptr+0(FP), R0 - MOVW val+8(FP), R1 - STLRW R1, (R0) - RET - -TEXT runtime·atomicstore64(SB), NOSPLIT, $0-16 - MOVD ptr+0(FP), R0 - MOVD val+8(FP), R1 - STLR R1, (R0) - RET - -TEXT runtime·xchg(SB), NOSPLIT, $0-20 -again: - MOVD ptr+0(FP), R0 - MOVW new+8(FP), R1 - LDAXRW (R0), R2 - STLXRW R1, (R0), R3 - CBNZ R3, again - MOVW R2, ret+16(FP) - RET - -TEXT runtime·xchg64(SB), NOSPLIT, $0-24 -again: - MOVD ptr+0(FP), R0 - MOVD new+8(FP), R1 - LDAXR (R0), R2 - STLXR R1, (R0), R3 - CBNZ R3, again - MOVD R2, ret+16(FP) - RET - -// bool runtime·cas64(uint64 *ptr, uint64 old, uint64 new) -// Atomically: -// if(*val == *old){ -// *val = new; -// return 1; -// } else { -// return 0; -// } -TEXT runtime·cas64(SB), NOSPLIT, $0-25 - MOVD ptr+0(FP), R0 - MOVD old+8(FP), R1 - MOVD new+16(FP), R2 -again: - LDAXR (R0), R3 - CMP R1, R3 - BNE ok - STLXR R2, (R0), R3 - CBNZ R3, again -ok: - CSET EQ, R0 - MOVB R0, ret+24(FP) - RET - -// uint32 xadd(uint32 volatile *ptr, int32 delta) -// Atomically: -// *val += delta; -// return *val; -TEXT runtime·xadd(SB), NOSPLIT, $0-20 -again: - MOVD ptr+0(FP), R0 - MOVW delta+8(FP), R1 - LDAXRW (R0), R2 - ADDW R2, R1, R2 - STLXRW R2, (R0), R3 - CBNZ R3, again - MOVW R2, ret+16(FP) - RET - -TEXT runtime·xadd64(SB), NOSPLIT, $0-24 -again: - MOVD ptr+0(FP), R0 - MOVD delta+8(FP), R1 - LDAXR (R0), R2 - ADD R2, R1, R2 - STLXR R2, (R0), R3 - CBNZ R3, again - MOVD R2, ret+16(FP) - RET - -TEXT runtime·xchguintptr(SB), NOSPLIT, $0-24 - B runtime·xchg64(SB) - TEXT ·publicationBarrier(SB),NOSPLIT,$-8-0 DMB $0xe // DMB ST RET |