diff options
Diffstat (limited to 'sys/sparc64/include/asmacros.h')
| -rw-r--r-- | sys/sparc64/include/asmacros.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/sparc64/include/asmacros.h b/sys/sparc64/include/asmacros.h index 2fd5143..a0e317b 100644 --- a/sys/sparc64/include/asmacros.h +++ b/sys/sparc64/include/asmacros.h @@ -69,6 +69,17 @@ mov r3, r2 /* + * Atomically increment an u_long in memory. + */ +#define ATOMIC_INC_ULONG(r1, r2, r3) \ + ldx [r1], r2 ; \ +9: add r2, 1, r3 ; \ + casxa [r1] ASI_N, r2, r3 ; \ + cmp r2, r3 ; \ + bne,pn %icc, 9b ; \ + mov r3, r2 + +/* * Atomically clear a number of bits of an integer in memory. */ #define ATOMIC_CLEAR_INT(r1, r2, r3, bits) \ |
