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// context tapset
// Copyright (C) 2005, 2006 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
function print_regs () %{
if (CONTEXT->regs) {
_stp_print_regs (CONTEXT->regs);
}
%}
function print_backtrace () %{
if (CONTEXT->regs) {
_stp_stack_print(CONTEXT->regs);
}
%}
function backtrace:string () %{ /* pure */
if (CONTEXT->regs) {
/* XXX: this won't be necessary when runtime and translator */
/* agree on what a string is. */
String str = _stp_string_init (0);
_stp_stack_sprint (str, CONTEXT->regs, 0);
strlcpy (THIS->__retvalue, _stp_string_ptr(str), MAXSTRINGLEN);
} else
strlcpy (THIS->__retvalue, "", MAXSTRINGLEN);
%}
function execname:string () %{ /* pure */
strlcpy (THIS->__retvalue, current->comm, MAXSTRINGLEN);
%}
function pid:long () %{ /* pure */
THIS->__retvalue = current->tgid;
%}
function tid:long () %{ /* pure */
THIS->__retvalue = current->pid;
%}
function ppid:long () %{ /* pure */
THIS->__retvalue = current->parent->tgid;
%}
function pexecname:string () %{ /* pure */
strlcpy (THIS->__retvalue, current->parent->comm, MAXSTRINGLEN);
%}
function gid:long () %{ /* pure */
THIS->__retvalue = current->gid;
%}
function egid:long () %{ /* pure */
THIS->__retvalue = current->egid;
%}
function uid:long () %{ /* pure */
THIS->__retvalue = current->uid;
%}
function euid:long () %{ /* pure */
THIS->__retvalue = current->euid;
%}
function cpuid:long () %{ /* pure */
THIS->__retvalue = current->thread_info->cpu;
%}
function cpu:long () %{ /* pure */
THIS->__retvalue = current->thread_info->cpu; /* smp_processor_id()? */
%}
function print_stack(stk:string) %{
char *ptr = THIS->stk;
char *tok = strsep(&ptr, " ");
while (tok && *tok) {
_stp_print_cstr(" ");
_stp_symbol_print (simple_strtol(tok, NULL, 16));
_stp_print_cstr("\n");
tok = strsep(&ptr, " ");
}
%}
function pp:string () %{ /* pure */
strlcpy (THIS->__retvalue, CONTEXT->probe_point, MAXSTRINGLEN);
%}
function probefunc:string () %{ /* pure */
char *dst, *ptr, *start;
String str;
int len = MAXSTRINGLEN;
start = strstr(CONTEXT->probe_point, "function(\"");
ptr = start + 10;
if (!start) {
start = strstr(CONTEXT->probe_point, "inline(\"");
ptr = start + 8;
}
if (start) {
dst = THIS->__retvalue;
while (*ptr != '@' && --len > 0 && *ptr)
*dst++ = *ptr++;
*dst = 0;
goto done;
}
if (CONTEXT->regs) {
str = _stp_string_init (0);
_stp_symbol_sprint(str, REG_IP(CONTEXT->regs));
start = strstr(_stp_string_ptr(str), " : ");
if (start) {
dst = THIS->__retvalue;
ptr = start+3;
while (*ptr != '+' && --len > 0 && *ptr)
*dst++ = *ptr++;
*dst = 0;
}
else {
strlcpy(THIS->__retvalue, _stp_string_ptr(str),MAXSTRINGLEN);
}
goto done;
}
THIS->__retvalue[0] = '\0';
done: ;
%}
function is_return:long () %{ /* pure */
char *ptr = strrchr(CONTEXT->probe_point, '.');
if (ptr) {
if (strcmp(ptr+1,"return") == 0)
THIS->__retvalue = 1;
}
%}
function target:long () %{ /* pure */
THIS->__retvalue = _stp_target;
%}
function returnval () { return retval () } # deprecated
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