/* Native-dependent code for FreeBSD.
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/* Native-dependent code for FreeBSD.
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Copyright (C) 2002, 2003, 2004, 2007, 2008, 2009, 2010
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Copyright (C) 2002, 2003, 2004, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "regcache.h"
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#include "regcache.h"
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#include "regset.h"
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#include "regset.h"
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#include "gdbthread.h"
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#include "gdbthread.h"
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#include "gdb_assert.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/procfs.h>
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#include <sys/procfs.h>
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#include <sys/sysctl.h>
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#include <sys/sysctl.h>
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#include "elf-bfd.h"
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#include "elf-bfd.h"
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#include "fbsd-nat.h"
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#include "fbsd-nat.h"
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/* Return a the name of file that can be opened to get the symbols for
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/* Return a the name of file that can be opened to get the symbols for
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the child process identified by PID. */
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the child process identified by PID. */
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char *
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char *
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fbsd_pid_to_exec_file (int pid)
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fbsd_pid_to_exec_file (int pid)
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{
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{
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size_t len = MAXPATHLEN;
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size_t len = MAXPATHLEN;
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char *buf = xcalloc (len, sizeof (char));
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char *buf = xcalloc (len, sizeof (char));
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char *path;
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char *path;
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#ifdef KERN_PROC_PATHNAME
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#ifdef KERN_PROC_PATHNAME
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int mib[4];
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int mib[4];
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mib[0] = CTL_KERN;
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_PATHNAME;
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mib[2] = KERN_PROC_PATHNAME;
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mib[3] = pid;
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mib[3] = pid;
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if (sysctl (mib, 4, buf, &len, NULL, 0) == 0)
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if (sysctl (mib, 4, buf, &len, NULL, 0) == 0)
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return buf;
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return buf;
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#endif
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#endif
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path = xstrprintf ("/proc/%d/file", pid);
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path = xstrprintf ("/proc/%d/file", pid);
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if (readlink (path, buf, MAXPATHLEN) == -1)
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if (readlink (path, buf, MAXPATHLEN) == -1)
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{
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{
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xfree (buf);
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xfree (buf);
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buf = NULL;
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buf = NULL;
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}
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}
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xfree (path);
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xfree (path);
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return buf;
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return buf;
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}
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}
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static int
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static int
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fbsd_read_mapping (FILE *mapfile, unsigned long *start, unsigned long *end,
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fbsd_read_mapping (FILE *mapfile, unsigned long *start, unsigned long *end,
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char *protection)
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char *protection)
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{
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{
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/* FreeBSD 5.1-RELEASE uses a 256-byte buffer. */
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/* FreeBSD 5.1-RELEASE uses a 256-byte buffer. */
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char buf[256];
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char buf[256];
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int resident, privateresident;
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int resident, privateresident;
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unsigned long obj;
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unsigned long obj;
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int ret = EOF;
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int ret = EOF;
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/* As of FreeBSD 5.0-RELEASE, the layout is described in
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/* As of FreeBSD 5.0-RELEASE, the layout is described in
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/usr/src/sys/fs/procfs/procfs_map.c. Somewhere in 5.1-CURRENT a
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/usr/src/sys/fs/procfs/procfs_map.c. Somewhere in 5.1-CURRENT a
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new column was added to the procfs map. Therefore we can't use
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new column was added to the procfs map. Therefore we can't use
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fscanf since we need to support older releases too. */
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fscanf since we need to support older releases too. */
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if (fgets (buf, sizeof buf, mapfile) != NULL)
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if (fgets (buf, sizeof buf, mapfile) != NULL)
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ret = sscanf (buf, "%lx %lx %d %d %lx %s", start, end,
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ret = sscanf (buf, "%lx %lx %d %d %lx %s", start, end,
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&resident, &privateresident, &obj, protection);
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&resident, &privateresident, &obj, protection);
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return (ret != 0 && ret != EOF);
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return (ret != 0 && ret != EOF);
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}
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}
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/* Iterate over all the memory regions in the current inferior,
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/* Iterate over all the memory regions in the current inferior,
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calling FUNC for each memory region. OBFD is passed as the last
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calling FUNC for each memory region. OBFD is passed as the last
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argument to FUNC. */
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argument to FUNC. */
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int
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int
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fbsd_find_memory_regions (int (*func) (CORE_ADDR, unsigned long,
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fbsd_find_memory_regions (int (*func) (CORE_ADDR, unsigned long,
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int, int, int, void *),
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int, int, int, void *),
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void *obfd)
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void *obfd)
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{
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{
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pid_t pid = ptid_get_pid (inferior_ptid);
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pid_t pid = ptid_get_pid (inferior_ptid);
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char *mapfilename;
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char *mapfilename;
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FILE *mapfile;
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FILE *mapfile;
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unsigned long start, end, size;
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unsigned long start, end, size;
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char protection[4];
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char protection[4];
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int read, write, exec;
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int read, write, exec;
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struct cleanup *cleanup;
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struct cleanup *cleanup;
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mapfilename = xstrprintf ("/proc/%ld/map", (long) pid);
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mapfilename = xstrprintf ("/proc/%ld/map", (long) pid);
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cleanup = make_cleanup (xfree, mapfilename);
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cleanup = make_cleanup (xfree, mapfilename);
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mapfile = fopen (mapfilename, "r");
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mapfile = fopen (mapfilename, "r");
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if (mapfile == NULL)
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if (mapfile == NULL)
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error (_("Couldn't open %s."), mapfilename);
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error (_("Couldn't open %s."), mapfilename);
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make_cleanup_fclose (mapfile);
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make_cleanup_fclose (mapfile);
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if (info_verbose)
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if (info_verbose)
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fprintf_filtered (gdb_stdout,
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fprintf_filtered (gdb_stdout,
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"Reading memory regions from %s\n", mapfilename);
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"Reading memory regions from %s\n", mapfilename);
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/* Now iterate until end-of-file. */
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/* Now iterate until end-of-file. */
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while (fbsd_read_mapping (mapfile, &start, &end, &protection[0]))
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while (fbsd_read_mapping (mapfile, &start, &end, &protection[0]))
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{
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{
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size = end - start;
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size = end - start;
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read = (strchr (protection, 'r') != 0);
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read = (strchr (protection, 'r') != 0);
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write = (strchr (protection, 'w') != 0);
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write = (strchr (protection, 'w') != 0);
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exec = (strchr (protection, 'x') != 0);
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exec = (strchr (protection, 'x') != 0);
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if (info_verbose)
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if (info_verbose)
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{
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{
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fprintf_filtered (gdb_stdout,
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fprintf_filtered (gdb_stdout,
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"Save segment, %ld bytes at %s (%c%c%c)\n",
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"Save segment, %ld bytes at %s (%c%c%c)\n",
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size, paddress (target_gdbarch, start),
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size, paddress (target_gdbarch, start),
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read ? 'r' : '-',
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read ? 'r' : '-',
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write ? 'w' : '-',
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write ? 'w' : '-',
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exec ? 'x' : '-');
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exec ? 'x' : '-');
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}
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}
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/* Invoke the callback function to create the corefile segment. */
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/* Invoke the callback function to create the corefile segment. */
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func (start, size, read, write, exec, obfd);
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func (start, size, read, write, exec, obfd);
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}
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}
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do_cleanups (cleanup);
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do_cleanups (cleanup);
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return 0;
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return 0;
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}
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}
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static int
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static int
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find_signalled_thread (struct thread_info *info, void *data)
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find_signalled_thread (struct thread_info *info, void *data)
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{
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{
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if (info->stop_signal != TARGET_SIGNAL_0
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if (info->stop_signal != TARGET_SIGNAL_0
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&& ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid))
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&& ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid))
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return 1;
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return 1;
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return 0;
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return 0;
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}
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}
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static enum target_signal
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static enum target_signal
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find_stop_signal (void)
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find_stop_signal (void)
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{
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{
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struct thread_info *info =
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struct thread_info *info =
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iterate_over_threads (find_signalled_thread, NULL);
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iterate_over_threads (find_signalled_thread, NULL);
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if (info)
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if (info)
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return info->stop_signal;
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return info->stop_signal;
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else
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else
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return TARGET_SIGNAL_0;
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return TARGET_SIGNAL_0;
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}
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}
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/* Create appropriate note sections for a corefile, returning them in
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/* Create appropriate note sections for a corefile, returning them in
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allocated memory. */
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allocated memory. */
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char *
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char *
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fbsd_make_corefile_notes (bfd *obfd, int *note_size)
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fbsd_make_corefile_notes (bfd *obfd, int *note_size)
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{
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{
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const struct regcache *regcache = get_current_regcache ();
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const struct regcache *regcache = get_current_regcache ();
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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gregset_t gregs;
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gregset_t gregs;
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fpregset_t fpregs;
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fpregset_t fpregs;
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char *note_data = NULL;
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char *note_data = NULL;
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Elf_Internal_Ehdr *i_ehdrp;
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Elf_Internal_Ehdr *i_ehdrp;
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const struct regset *regset;
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const struct regset *regset;
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size_t size;
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size_t size;
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/* Put a "FreeBSD" label in the ELF header. */
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/* Put a "FreeBSD" label in the ELF header. */
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i_ehdrp = elf_elfheader (obfd);
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i_ehdrp = elf_elfheader (obfd);
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i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
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i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
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gdb_assert (gdbarch_regset_from_core_section_p (gdbarch));
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gdb_assert (gdbarch_regset_from_core_section_p (gdbarch));
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size = sizeof gregs;
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size = sizeof gregs;
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regset = gdbarch_regset_from_core_section (gdbarch, ".reg", size);
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regset = gdbarch_regset_from_core_section (gdbarch, ".reg", size);
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gdb_assert (regset && regset->collect_regset);
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gdb_assert (regset && regset->collect_regset);
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regset->collect_regset (regset, regcache, -1, &gregs, size);
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regset->collect_regset (regset, regcache, -1, &gregs, size);
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note_data = elfcore_write_prstatus (obfd, note_data, note_size,
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note_data = elfcore_write_prstatus (obfd, note_data, note_size,
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ptid_get_pid (inferior_ptid),
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ptid_get_pid (inferior_ptid),
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find_stop_signal (), &gregs);
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find_stop_signal (), &gregs);
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size = sizeof fpregs;
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size = sizeof fpregs;
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regset = gdbarch_regset_from_core_section (gdbarch, ".reg2", size);
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regset = gdbarch_regset_from_core_section (gdbarch, ".reg2", size);
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gdb_assert (regset && regset->collect_regset);
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gdb_assert (regset && regset->collect_regset);
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regset->collect_regset (regset, regcache, -1, &fpregs, size);
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regset->collect_regset (regset, regcache, -1, &fpregs, size);
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note_data = elfcore_write_prfpreg (obfd, note_data, note_size,
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note_data = elfcore_write_prfpreg (obfd, note_data, note_size,
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&fpregs, sizeof (fpregs));
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&fpregs, sizeof (fpregs));
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if (get_exec_file (0))
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if (get_exec_file (0))
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{
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{
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char *fname = strrchr (get_exec_file (0), '/') + 1;
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char *fname = strrchr (get_exec_file (0), '/') + 1;
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char *psargs = xstrdup (fname);
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char *psargs = xstrdup (fname);
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if (get_inferior_args ())
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if (get_inferior_args ())
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psargs = reconcat (psargs, psargs, " ", get_inferior_args (), NULL);
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psargs = reconcat (psargs, psargs, " ", get_inferior_args (), NULL);
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note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
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note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
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fname, psargs);
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fname, psargs);
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}
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}
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make_cleanup (xfree, note_data);
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make_cleanup (xfree, note_data);
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return note_data;
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return note_data;
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}
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}
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