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| author | Andreas Schwab <schwab@suse.de> | 2003-03-31 16:01:09 +0000 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2003-03-31 16:01:09 +0000 |
| commit | e8b113e51752dae10e780e511ce08a1840bcdc63 (patch) | |
| tree | f24628862c1d0628e3461f838793e4ff3f1c0624 /sysdeps/m68k | |
| parent | 0a9d1b3b819ea1a43ca39185f6bf77816592fc8b (diff) | |
| download | glibc-e8b113e51752dae10e780e511ce08a1840bcdc63.tar.gz glibc-e8b113e51752dae10e780e511ce08a1840bcdc63.tar.xz glibc-e8b113e51752dae10e780e511ce08a1840bcdc63.zip | |
(atomic_increment_and_test): Define. (atomic_decrement_and_test): Fix test.
Diffstat (limited to 'sysdeps/m68k')
| -rw-r--r-- | sysdeps/m68k/m68020/bits/atomic.h | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/sysdeps/m68k/m68020/bits/atomic.h b/sysdeps/m68k/m68020/bits/atomic.h index 80b5b8f3bf..6978b27cde 100644 --- a/sysdeps/m68k/m68020/bits/atomic.h +++ b/sysdeps/m68k/m68020/bits/atomic.h @@ -179,18 +179,52 @@ typedef uintmax_t uatomic_max_t; } \ }) +#define atomic_increment_and_test(mem) \ + ({ char __result; \ + if (sizeof (*(mem)) == 1) \ + __asm __volatile ("addq%.b %#1,%1; seq %0" \ + : "=dm" (__result), "=m" (*(mem)) \ + : "1" (*(mem))); \ + else if (sizeof (*(mem)) == 2) \ + __asm __volatile ("addq%.w %#1,%1; seq %0" \ + : "=dm" (__result), "=m" (*(mem)) \ + : "1" (*(mem))); \ + else if (sizeof (*(mem)) == 4) \ + __asm __volatile ("addq%.l %#1,%1; seq %0" \ + : "=dm" (__result), "=m" (*(mem)) \ + : "1" (*(mem))); \ + else \ + { \ + __typeof (mem) __memp = (mem); \ + __typeof (*(mem)) __oldval = *__memp; \ + __typeof (*(mem)) __temp; \ + __asm __volatile ("1: move%.l %1,%2;" \ + " move%.l %R1,%R2;" \ + " addq%.l %#1,%2;" \ + " addx%.l %5,%R2;" \ + " seq %0;" \ + " cas2%.l %1:%R1,%2:%R2,(%3):(%4);" \ + " jbne 1b" \ + : "=&dm" (__result), "=d" (__oldval), \ + "=&d" (__temp) \ + : "r" (__memp), "r" ((char *) __memp + 4), \ + "d" (0), "1" (__oldval) \ + : "memory"); \ + } \ + __result; }) + #define atomic_decrement_and_test(mem) \ ({ char __result; \ if (sizeof (*(mem)) == 1) \ - __asm __volatile ("subq%.b %#1,%1; scs %0" \ + __asm __volatile ("subq%.b %#1,%1; seq %0" \ : "=dm" (__result), "=m" (*(mem)) \ : "1" (*(mem))); \ else if (sizeof (*(mem)) == 2) \ - __asm __volatile ("subq%.w %#1,%1; scs %0" \ + __asm __volatile ("subq%.w %#1,%1; seq %0" \ : "=dm" (__result), "=m" (*(mem)) \ : "1" (*(mem))); \ else if (sizeof (*(mem)) == 4) \ - __asm __volatile ("subq%.l %#1,%1; scs %0" \ + __asm __volatile ("subq%.l %#1,%1; seq %0" \ : "=dm" (__result), "=m" (*(mem)) \ : "1" (*(mem))); \ else \ @@ -202,7 +236,7 @@ typedef uintmax_t uatomic_max_t; " move%.l %R1,%R2;" \ " subq%.l %#1,%2;" \ " subx%.l %5,%R2;" \ - " scs %0;" \ + " seq %0;" \ " cas2%.l %1:%R1,%2:%R2,(%3):(%4);" \ " jbne 1b" \ : "=&dm" (__result), "=d" (__oldval), \ |