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| author | marcel <marcel@FreeBSD.org> | 2004-08-25 07:42:34 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2004-08-25 07:42:34 +0000 |
| commit | 52736a0a13c8e6e526a15ae80cb713785a0e54e9 (patch) | |
| tree | 96140b7210ea2a78aca4308ffa0ac64699660fe9 /sys/ia64/include/cpu.h | |
| parent | a2bb055310854876373f4978c9077436ae388a9b (diff) | |
| download | FreeBSD-src-52736a0a13c8e6e526a15ae80cb713785a0e54e9.zip FreeBSD-src-52736a0a13c8e6e526a15ae80cb713785a0e54e9.tar.gz | |
Make profiling actually work. The gcc compiler emits a call to the
_mcount() stub when profiling is enabled. Emit this code sequence
for assembly routines as welli (MCOUNT definition in <machine/asm.h>.
We do not pass the GOT entry however as the 4th argument, because it's
not used. The _mcount() stub calls __mcount(), which does the actual
work. Define _MCOUNT_DECL to define __mcount. We do not have an
implementation of mcount(), so we define MCOUNT as empty, but have a
weak alias to _mcount() in _mcount.S.
Note that the _mcount() stub in the kernel is slightly different from
the stub in userland. This is because we do not have to worry about
nested routines in the kernel.
Diffstat (limited to 'sys/ia64/include/cpu.h')
| -rw-r--r-- | sys/ia64/include/cpu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/ia64/include/cpu.h b/sys/ia64/include/cpu.h index c7a4603..da33f82 100644 --- a/sys/ia64/include/cpu.h +++ b/sys/ia64/include/cpu.h @@ -78,6 +78,11 @@ struct clockframe { #ifdef _KERNEL +#ifdef GPROF +extern char btext[]; +extern char etext[]; +#endif + /* * Return contents of in-cpu fast counter as a sort of "bogo-time" * for non-critical timing. |
