ref: 2450db511ea8911e52168e3a5f895a89e963dc57
dir: /atomics9_amd64.s/
TEXT atomic_fetch_add(SB), 1, $0 afap: MOVL (RARG), AX /* exp */ MOVL AX, CX MOVL AX, BX ADDL d+8(FP), BX /* new */ LOCK; CMPXCHGL BX, (RARG) JNZ afap MOVL CX, AX RET TEXT atomic_fetch_sub(SB), 1, $0 afsp: MOVL (RARG), AX /* exp */ MOVL AX, CX MOVL AX, BX SUBL d+8(FP), BX /* new */ LOCK; CMPXCHGL BX, (RARG) JNZ afsp MOVL CX, AX RET TEXT atomic_fetch_and(SB), 1, $0 afandp: MOVL (RARG), AX /* exp */ MOVL AX, CX MOVL AX, BX ANDL d+8(FP), BX /* new */ LOCK; CMPXCHGL BX, (RARG) JNZ afandp MOVL CX, AX RET TEXT atomic_fetch_or(SB), 1, $0 aforp: MOVL (RARG), AX /* exp */ MOVL AX, CX MOVL AX, BX ORL d+8(FP), BX /* new */ LOCK; CMPXCHGL BX, (RARG) JNZ aforp MOVL CX, AX RET TEXT atomic_fetch_xor(SB), 1, $0 afxorp: MOVL (RARG), AX /* exp */ MOVL AX, CX MOVL AX, BX XORL d+8(FP), BX /* new */ LOCK; CMPXCHGL BX, (RARG) JNZ afxorp MOVL CX, AX RET TEXT atomic_exchange(SB), 1, $0 afexp: MOVL (RARG), AX /* exp */ MOVL AX, CX LOCK; CMPXCHGL AX, (RARG) JNZ afexp MOVL CX, AX RET