PERFORCE change 135121 for review
John Birrell
jb at FreeBSD.org
Sat Feb 9 13:26:11 PST 2008
http://perforce.freebsd.org/chv.cgi?CH=135121
Change 135121 by jb at jb_freebsd1 on 2008/02/09 21:25:41
Change a comment to reflect the fact that the Statically
Defined Tracing (sdt) implementation for FreeBSD doesn't
use breakpoints.
Affected files ...
.. //depot/projects/dtrace/src/sys/amd64/amd64/exception.S#9 edit
Differences ...
==== //depot/projects/dtrace/src/sys/amd64/amd64/exception.S#9 (text+ko) ====
@@ -188,10 +188,10 @@
FAKE_MCOUNT(TF_RIP(%rsp))
#ifdef KDTRACE_HOOKS
/*
- * DTrace Function Boundary Trace (fbt) and Statically Defined
- * Trace (sdt) probes are triggered by int3 (0xcc) which causes
- * the #BP (T_BPTFLT) breakpoint interrupt. For all other trap
- * types, just handle them in the usual way.
+ * DTrace Function Boundary Trace (fbt) probes are triggered
+ * by int3 (0xcc) which causes the #BP (T_BPTFLT) breakpoint
+ * interrupt. For all other trap types, just handle them in
+ * the usual way.
*/
cmpq $T_BPTFLT,TF_TRAPNO(%rsp)
jne calltrap
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