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