diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/profil-counter.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/profil-counter.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/profil-counter.h b/sysdeps/unix/sysv/linux/ia64/profil-counter.h index 1cc0390b8f..a3e501dd89 100644 --- a/sysdeps/unix/sysv/linux/ia64/profil-counter.h +++ b/sysdeps/unix/sysv/linux/ia64/profil-counter.h @@ -23,5 +23,10 @@ static void profil_counter (int signr, int code, struct sigcontext *scp) { - profil_count ((void *) scp->sc_ip); + unsigned long ip = scp->sc_ip & ~0X3ULL, slot = scp->sc_ip & 0x3ull; + + /* Note: Linux/ia64 encodes the slot number in bits 0 and 1. We + want to multiply the slot number by four so we can use bins of + width 4 to get accurate instruction-level profiling. */ + profil_count ((void *) (ip + 4*slot)); } |