1 /* FreeBSD-specific methods for using the /proc file system.
2 Copyright 2002 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
26 #include <sys/procfs.h>
27 #include <sys/types.h>
34 child_pid_to_exec_file (int pid
)
39 xasprintf (&path
, "/proc/%d/file", pid
);
40 buf
= xcalloc (MAXPATHLEN
, sizeof (char));
41 make_cleanup (xfree
, path
);
42 make_cleanup (xfree
, buf
);
44 if (readlink (path
, buf
, MAXPATHLEN
) > 0)
51 read_mapping (FILE *mapfile
,
56 int resident
, privateresident
;
58 int ref_count
, shadow_count
;
60 char cow
[5], access
[4];
64 /* The layout is described in /usr/src/miscfs/procfs/procfs_map.c. */
65 ret
= fscanf (mapfile
, "%lx %lx %d %d %lx %s %d %d %x %s %s %s\n",
67 &resident
, &privateresident
, &obj
,
69 &ref_count
, &shadow_count
, &flags
, cow
, access
, type
);
71 return (ret
!= 0 && ret
!= EOF
);
75 fbsd_find_memory_regions (int (*func
) (CORE_ADDR
,
81 pid_t pid
= ptid_get_pid (inferior_ptid
);
84 unsigned long start
, end
, size
;
86 int read
, write
, exec
;
88 xasprintf (&mapfilename
, "/proc/%ld/map", (long) pid
);
89 mapfile
= fopen (mapfilename
, "r");
91 error ("Couldn't open %s\n", mapfilename
);
94 fprintf_filtered (gdb_stdout
,
95 "Reading memory regions from %s\n", mapfilename
);
97 /* Now iterate until end-of-file. */
98 while (read_mapping (mapfile
, &start
, &end
, &protection
[0]))
102 read
= (strchr (protection
, 'r') != 0);
103 write
= (strchr (protection
, 'w') != 0);
104 exec
= (strchr (protection
, 'x') != 0);
108 fprintf_filtered (gdb_stdout
,
109 "Save segment, %ld bytes at 0x%s (%c%c%c)\n",
110 size
, paddr_nz (start
),
116 /* Invoke the callback function to create the corefile segment. */
117 func (start
, size
, read
, write
, exec
, obfd
);
125 fbsd_make_corefile_notes (bfd
*obfd
, int *note_size
)
129 char *note_data
= NULL
;
130 Elf_Internal_Ehdr
*i_ehdrp
;
132 /* Put a "FreeBSD" label in the ELF header. */
133 i_ehdrp
= elf_elfheader (obfd
);
134 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_FREEBSD
;
136 fill_gregset (&gregs
, -1);
137 note_data
= elfcore_write_prstatus (obfd
, note_data
, note_size
,
138 ptid_get_pid (inferior_ptid
),
139 stop_signal
, &gregs
);
141 fill_fpregset (&fpregs
, -1);
142 note_data
= elfcore_write_prfpreg (obfd
, note_data
, note_size
,
143 &fpregs
, sizeof (fpregs
));
145 if (get_exec_file (0))
147 char *fname
= strrchr (get_exec_file (0), '/') + 1;
148 char *psargs
= xstrdup (fname
);
150 if (get_inferior_args ())
151 psargs
= reconcat (psargs
, psargs
, " ", get_inferior_args (), NULL
);
153 note_data
= elfcore_write_prpsinfo (obfd
, note_data
, note_size
,
157 make_cleanup (xfree
, note_data
);
163 _initialize_fbsd_proc (void)
165 extern void inftarg_set_find_memory_regions ();
166 extern void inftarg_set_make_corefile_notes ();
168 inftarg_set_find_memory_regions (fbsd_find_memory_regions
);
169 inftarg_set_make_corefile_notes (fbsd_make_corefile_notes
);
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