diff options
| -rw-r--r-- | sys/src/libc/arm64/atom.s | 10 | ||||
| -rw-r--r-- | sys/src/libc/arm64/tas.s | 1 |
2 files changed, 7 insertions, 4 deletions
diff --git a/sys/src/libc/arm64/atom.s b/sys/src/libc/arm64/atom.s index f1fbc522a..004ebf7d6 100644 --- a/sys/src/libc/arm64/atom.s +++ b/sys/src/libc/arm64/atom.s @@ -3,6 +3,12 @@ * int cas(uint *p, int ov, int nv); * int casl(ulong *p, ulong ov, ulong nv); */ +TEXT cas0(SB), 1, $-4 +_cas0: + CLREX + MOVW $0, R0 + RETURN + TEXT cas32(SB), 1, $-4 TEXT cas(SB), 1, $-4 TEXT casl(SB), 1, $-4 @@ -16,10 +22,6 @@ _cas1: CBNZ R4, _cas1 MOVW $1, R0 B _barrier(SB) -_cas0: - CLREX - MOVW $0, R0 - RETURN TEXT casp(SB), 1, $-4 MOV ov+8(FP), R1 diff --git a/sys/src/libc/arm64/tas.s b/sys/src/libc/arm64/tas.s index 090037c81..c083b1604 100644 --- a/sys/src/libc/arm64/tas.s +++ b/sys/src/libc/arm64/tas.s @@ -5,6 +5,7 @@ _tas1: STXRW R2, (R0), R3 CBNZ R3, _tas1 MOVW R1, R0 + B _barrier(SB) TEXT _barrier(SB), 1, $-4 DMB $0xB // ISH |