fnbounds_static.c

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// -*-Mode: C++;-*- // technically C99

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//*********************************************************************
// system includes
//*********************************************************************

#include <assert.h>

//*********************************************************************
// local includes
//*********************************************************************

#include "fnbounds_interface.h"
#include "fnbounds_file_header.h"

#include <loadmap.h>
#include <files.h>

//*********************************************************************

//-------------------------------------------------------------------------
// the external variables below will be defined in a 
// machine-generated file
//-------------------------------------------------------------------------

// TODO:tallent: abstract with hpcfnbounds (cf. dump_file_symbols())
// and fnbounds_read_nm_file()
extern unsigned long hpcrun_nm_addrs[];
extern unsigned long hpcrun_nm_addrs_len;
extern unsigned long hpcrun_reference_offset;
extern int           hpcrun_is_relocatable;

//-------------------------------------------------------------------------
// local data
//-------------------------------------------------------------------------

static load_module_t* fnbounds_executable_dso = NULL;



//-------------------------------------------------------------------------
// interface functions
//-------------------------------------------------------------------------
int
fnbounds_init()
{
  void *lm_beg_fn = (void*)hpcrun_nm_addrs[0];
  void *lm_end_fn = (void*)hpcrun_nm_addrs[hpcrun_nm_addrs_len - 1];
  long lm_size = lm_end_fn - lm_beg_fn;

  struct fnbounds_file_header fh;
  fh.num_entries = hpcrun_nm_addrs_len;
  fh.reference_offset = hpcrun_reference_offset;
  fh.is_relocatable = hpcrun_is_relocatable;
  fh.mmap_size = 0;

  dso_info_t *dso =
    hpcrun_dso_make(hpcrun_files_executable_pathname(), (void*)hpcrun_nm_addrs, 
                    &fh, lm_beg_fn, lm_end_fn, lm_size);
  fnbounds_executable_dso = hpcrun_loadmap_map(dso);

  return 0;
}


fnbounds_table_t
fnbounds_fetch_executable_table(void)
{
  return (fnbounds_table_t)
    { .table = (void**) hpcrun_nm_addrs, .len = hpcrun_nm_addrs_len};
}


int
fnbounds_query(void *pc)
{
  assert(0);
  return 0;
}


int
fnbounds_add(char *module_name, void *start, void *end)
{
  assert(0);
  return 0;
}


bool
fnbounds_enclosing_addr(void *ip, void **start, void **end, load_module_t **lm)
{
  load_module_t* lm_ = fnbounds_executable_dso;
  int ret = fnbounds_table_lookup((void*)hpcrun_nm_addrs, hpcrun_nm_addrs_len,
                                  ip, start, end);
  if (lm) {
    *lm = lm_;
  }
  return (ret == 0);
}


void 
fnbounds_fini()
{
}


void
fnbounds_release_lock(void)
{
}