Current File : //usr/share/systemtap/runtime/dyninst/uprobes.c
/* -*- linux-c -*-
* Common functions for using dyninst-based uprobes
* Copyright (C) 2012-2013 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.
*/
#ifndef _UPROBES_DYNINST_C_
#define _UPROBES_DYNINST_C_
/* STAPDU: SystemTap Dyninst Uprobes */
// loc2c-generated code assumes pt_regs are available, so use this to make
// sure we always have *something* for it to dereference...
static struct pt_regs stapdu_dummy_uregs = {};
/* These functions implement the ABI in stapdyn.h
*
* NB: The translator will generate two arrays used here:
* struct stapdu_target stapdu_targets[];
* struct stapdu_probe stapdu_probes[];
*/
uint64_t stp_dyninst_target_count(void)
{
return ARRAY_SIZE(stapdu_targets);
}
const char* stp_dyninst_target_path(uint64_t index)
{
if (index >= stp_dyninst_target_count())
return NULL;
return stapdu_targets[index].path;
}
uint64_t stp_dyninst_probe_count(void)
{
return ARRAY_SIZE(stapdu_probes);
}
uint64_t stp_dyninst_probe_target(uint64_t index)
{
if (index >= stp_dyninst_probe_count())
return (uint64_t)-1;
return stapdu_probes[index].target;
}
uint64_t stp_dyninst_probe_offset(uint64_t index)
{
if (index >= stp_dyninst_probe_count())
return (uint64_t)-1;
return stapdu_probes[index].offset;
}
uint64_t stp_dyninst_probe_semaphore(uint64_t index)
{
if (index >= stp_dyninst_probe_count())
return (uint64_t)-1;
return stapdu_probes[index].semaphore;
}
uint64_t stp_dyninst_probe_flags(uint64_t index)
{
if (index >= stp_dyninst_probe_count())
return (uint64_t)-1;
return stapdu_probes[index].flags;
}
#endif /* _UPROBES_DYNINST_C_ */
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