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/* Copyright (C) 2021-2024 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "config.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <i18n.h>
#include <Elf.h>
#include <collctrl.h>
#include <StringBuilder.h>
#include "collect.h"
#include "libiberty.h"
/* get_count_data -- format exec of bit to do the real work */
void
collect::get_count_data ()
{
char command[8192];
char *s;
struct stat statbuf;
// reserve space for original args, plus 30 arguments to bit
nargs = origargc + 30;
char **narglist = (char **) xcalloc (nargs, sizeof (char *));
arglist = narglist;
// construct the command for bit
snprintf (command, sizeof (command), NTXT ("%s"), run_dir);
s = strstr_r (command, NTXT ("/bin"));
if (s != NULL)
{
// build command line for launching it
snprintf (s, sizeof (command) - (s - command), NTXT ("/lib/compilers/bit"));
if (stat (command, &statbuf) == -1)
{
// if bit command does not exist there
char *first_look = xstrdup (command);
snprintf (command, sizeof (command), NTXT ("%s"), run_dir);
s = strstr (command, NTXT ("/bin"));
snprintf (s, sizeof (command) - (s - command), NTXT ("/prod/bin/bit"));
if (stat (command, &statbuf) == -1)
{
// if bit command does not exist
dbe_write (2, GTXT ("bit is not installed as `%s' or `%s'\nNo experiment is possible\n"), first_look, command);
exit (2);
}
free (first_look);
}
*arglist++ = xstrdup (command);
}
else
{
dbe_write (2, GTXT ("collect can't find install bin directory\n"));
exit (1);
}
// Tell it to collect data
*arglist++ = NTXT ("collect");
// add the flag for real-data vs. static data
switch (cc->get_count ())
{
case -1:
*arglist++ = NTXT ("-i");
*arglist++ = NTXT ("static");
*arglist++ = NTXT ("-M");
break;
case 1:
*arglist++ = NTXT ("-M");
*arglist++ = NTXT ("-u");
break;
default:
abort ();
}
// tell bit to produce an experiment
*arglist++ = NTXT ("-e");
// now copy an edited list of collect options to the arglist
char **oargv = origargv;
// skip the "collect"
oargv++;
int argc = 1;
while (argc != targ_index)
{
char *p = *oargv;
switch (p[1])
{
// pass these arguments along, with parameter
case 'o':
case 'd':
case 'g':
case 'A':
case 'C':
case 'O':
case 'N':
*arglist++ = *oargv++;
*arglist++ = *oargv++;
argc = argc + 2;
break;
case 'I':
*arglist++ = *oargv++; // set the -I flag
*arglist++ = *oargv; // and the directory name
*arglist++ = NTXT ("-d"); // and the -d flag
*arglist++ = *oargv++; // to the same directory name
argc = argc + 2;
break;
case 'n':
case 'v':
// pass these arguments along as is
*arglist++ = *oargv++;
argc = argc + 1;
break;
case 'x':
// skip one argument
oargv++;
argc++;
break;
case 'c':
case 'L':
case 'y':
case 'l':
case 'F':
case 'j':
case 'J':
case 'p':
case 's':
case 'h':
case 'S':
case 'm':
case 'M':
case 'H':
case 'r':
case 'i':
// skip two arguments
oargv++;
oargv++;
argc = argc + 2;
break;
case 'R':
case 'Z':
default:
// these should never get this far
dbe_write (2, GTXT ("unexpected argument %s\n"), p);
abort ();
}
}
// now copy the target and its arguments
if (access (prog_name, X_OK) != 0) // not found
*arglist++ = *oargv++;
else
{
oargv++;
*arglist++ = prog_name;
}
while (*oargv != NULL)
*arglist++ = *oargv++;
/* now we have the full argument list composed; if verbose, print it */
if ((verbose == 1) || (disabled))
{
/* describe the experiment */
char *ccret = cc->show (0);
if (ccret != NULL)
{
writeStr (2, ccret);
free (ccret);
}
ccret = cc->show_expt ();
if (ccret != NULL)
{
/* write this to stdout */
writeStr (1, ccret);
free (ccret);
}
/* print the arguments to bit */
arglist = narglist;
StringBuilder sb;
sb.append (NTXT ("Exec argv[] = "));
for (int ret = 0; ret < nargs; ret++)
{
if (narglist[ret] == NULL)
break;
if (ret > 0)
sb.append (NTXT (" "));
sb.append (narglist[ret]);
}
sb.append (NTXT ("\n\n"));
write (2, sb.toString (), sb.length ());
}
/* check for dry run */
if (disabled)
exit (0);
/* ensure original outputs restored for target */
reset_output ();
/* now exec the bit to instrument and run the target ... */
// (void) execve( *narglist, narglist, origenvp);
(void) execvp (*narglist, narglist);
/* exec failed; no experiment to delete */
/* restore output for collector */
set_output ();
char *em = strerror (errno);
if (em == NULL)
dbe_write (2, GTXT ("execve of %s failed: errno = %d\n"), narglist[0], errno);
else
dbe_write (2, GTXT ("execve of %s failed: %s\n"), narglist[0], em);
exit (1);
}
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