diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
| commit | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch) | |
| tree | 2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/x86_64/hp-timing.h | |
| parent | 7d58530341304d403a6626d7f7a1913165fe2f32 (diff) | |
2.5-18.1
Diffstat (limited to 'sysdeps/x86_64/hp-timing.h')
| -rw-r--r-- | sysdeps/x86_64/hp-timing.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sysdeps/x86_64/hp-timing.h b/sysdeps/x86_64/hp-timing.h index e015ff79db..59a29abd45 100644 --- a/sysdeps/x86_64/hp-timing.h +++ b/sysdeps/x86_64/hp-timing.h @@ -1,5 +1,5 @@ /* High precision, low overhead timing functions. x86-64 version. - Copyright (C) 2002, 2004 Free Software Foundation, Inc. + Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -31,7 +31,11 @@ /* The funny business for 32-bit mode is not required here. */ # undef HP_TIMING_ACCUM -# define HP_TIMING_ACCUM(Sum, Diff) ((Sum) += (Diff)) - +# define HP_TIMING_ACCUM(Sum, Diff) \ + do { \ + hp_timing_t __diff = (Diff) - GLRO(dl_hp_timing_overhead); \ + __asm__ __volatile__ ("lock; addq %1, %0" \ + : "=m" (Sum) : "r" (__diff), "m" (Sum)); \ + } while (0) #endif /* hp-timing.h */ |