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struct task_struct;
#include "../sym.h"
#include <assert.h>
#include <elfutils/libdwfl.h>
typedef struct
{
char *fn;
unsigned long offset;
} module_args;
static int
module_callback (Dwfl_Module *mod, void **userdata __attribute__((unused)),
const char *name, Dwarf_Addr start, void *arg)
{
module_args *modargs = (module_args*)arg;
if (strcmp (modargs->fn, name) == 0)
{
modargs->offset += start;
return DWARF_CB_ABORT;
}
return DWARF_CB_OK;
}
static unsigned long _stp_umodule_relocate(const char *path,
unsigned long offset,
struct task_struct *task)
{
static char *debuginfo_path;
static const Dwfl_Callbacks proc_callbacks =
{
.find_debuginfo = dwfl_standard_find_debuginfo,
.debuginfo_path = &debuginfo_path,
.find_elf = dwfl_linux_proc_find_elf,
};
Dwfl *dwfl = dwfl_begin (&proc_callbacks);
if (dwfl == NULL)
_stp_error ("dwfl_begin: %s", dwfl_errmsg (-1));
int result = dwfl_linux_proc_report (dwfl, getpid());
if (result < 0)
_stp_error ("dwfl_linux_proc_report: %s", dwfl_errmsg (-1));
else if (result > 0)
_stp_error ("dwfl_linux_proc_report");
if (dwfl_report_end (dwfl, NULL, NULL) != 0)
_stp_error ("dwfl_report_end: %s", dwfl_errmsg (-1));
module_args modargs =
{
.fn = (char*)path,
.offset = offset
};
if (dwfl_getmodules (dwfl, module_callback, &modargs, 0) == -1)
_stp_error ("dwfl_getmodules: %s", dwfl_errmsg (-1));
dwfl_end (dwfl);
return modargs.offset;
}
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