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| author | Jim Keniston <jkenisto@us.ibm.com> | 2008-05-29 17:13:38 -0700 |
|---|---|---|
| committer | Jim Keniston <jkenisto@us.ibm.com> | 2008-05-29 17:13:38 -0700 |
| commit | af26b140348ba9989c63f36bb553862a0f75ffeb (patch) | |
| tree | f0285387a59482c498a80377a7537216c45db2f4 /stapfuncs.5.in | |
| parent | 8437928b8d07b6b77fc5f886b6900eb9cfd4a0d0 (diff) | |
| download | systemtap-steved-af26b140348ba9989c63f36bb553862a0f75ffeb.tar.gz systemtap-steved-af26b140348ba9989c63f36bb553862a0f75ffeb.tar.xz systemtap-steved-af26b140348ba9989c63f36bb553862a0f75ffeb.zip | |
Fix PR 6582: verify CONTEXT->regs in [u_]register()
Diffstat (limited to 'stapfuncs.5.in')
| -rw-r--r-- | stapfuncs.5.in | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/stapfuncs.5.in b/stapfuncs.5.in index 04e5ea17..6d4546ab 100644 --- a/stapfuncs.5.in +++ b/stapfuncs.5.in @@ -345,6 +345,11 @@ Return the maximum number of file handles for the given task. .SS CPU REGISTERS .TP +registers_valid:long () +Return 1 if register() and u_register() can be used +in the current context, or 0 otherwise. +For example, registers_valid() returns 0 when called from a begin or end probe. +.TP register:long (name:string) Return the value of the named CPU register, as it was saved when the current probe point was hit. @@ -368,7 +373,7 @@ segment registers: xcs/cs, xss/ss. For powerpc, the following names are recognized: r1, r2... r31, nip, msr, orig_gpr3, ctr, link, xer, ccr, softe, trap, -dar, dsisr, result; +dar, dsisr, result. .TP u_register:long (name:string) |