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- /* Size of rel file utility (`size') for GNU.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
- 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 1, 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, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <stdio.h>
- #include <ar.h>
- #include <sys/types.h>
- #include <sys/file.h>
-
- #if !defined(A_OUT) && !defined(MACH_O)
- #define A_OUT
- #endif
-
- #ifdef A_OUT
- #ifdef COFF_ENCAPSULATE
- #include "a.out.encap.h"
- #else
- /* On native BSD systems, use the system's own a.out.h. */
- #include <a.out.h>
- #endif
- #endif
-
- #ifdef MACH_O
- #include <sys/loader.h>
- #endif
-
- #ifdef USG
- #include <fcntl.h>
- #include <string.h>
- #else
- #include <strings.h>
- #endif
-
- /* Number of input file names specified. */
-
- int number_of_files;
-
- /* Current file's name */
-
- char *input_name;
-
- /* Current member's name, or 0 if processing a non-library file. */
-
- char *input_member;
-
- /* Offset within archive of the current member,
- if we are processing an archive. */
-
- int member_offset;
-
- char *malloc ();
-
- void do_one_file (), do_one_rel_file ();
- char *xmalloc ();
- char *concat ();
-
- main (argc, argv)
- char **argv;
- int argc;
- {
- int i;
-
- number_of_files = argc - 1;
-
- printf ("text\tdata\tbss\tdec\thex\n");
-
- /* Now scan and describe the files. */
-
- if (number_of_files == 0)
- do_one_file ("a.out");
- else
- for (i = 1; i < argc; i++)
- do_one_file (argv[i]);
- exit (0);
- }
-
- /* Print the filename of the current file on 'outfile' (a stdio stream). */
-
- print_file_name (outfile)
- FILE *outfile;
- {
- fprintf (outfile, "%s", input_name);
- if (input_member)
- fprintf (outfile, "(%s)", input_member);
- }
-
- /* process one input file */
- void scan_library ();
-
- void
- do_one_file (name)
- char *name;
- {
- int len, desc;
- char armag[SARMAG];
-
- desc = open (name, O_RDONLY, 0);
-
- if (desc < 0)
- {
- perror_name (name);
- return;
- }
-
- input_name = name;
- input_member = 0;
-
- if (SARMAG != read (desc, armag, SARMAG) || strncmp (armag, ARMAG, SARMAG))
- do_one_rel_file (desc, 0L);
- else
- scan_library (desc);
-
- close (desc);
- }
-
- /* Read in the archive data about one member.
- subfile_offset is the address within the archive of the start of that data.
- The value returned is the length of the member's contents, which does
- not include the archive data about the member.
-
- If there are no more valid members, zero is returned. */
-
- int
- decode_library_subfile (desc, subfile_offset)
- int desc;
- int subfile_offset;
- {
- int bytes_read;
- int namelen;
- int member_length;
- char *name;
- struct ar_hdr hdr1;
-
- lseek (desc, subfile_offset, 0);
-
- bytes_read = read (desc, &hdr1, sizeof hdr1);
- if (!bytes_read)
- ; /* end of archive */
-
- else if (sizeof hdr1 != bytes_read)
- error_with_file ("malformed library archive");
-
- else if (sscanf (hdr1.ar_size, "%d", &member_length) != 1)
- error_with_file ("malformatted header of archive member");
-
- else
- {
- for (namelen = 0;
- hdr1.ar_name[namelen] != 0
- && hdr1.ar_name[namelen] != ' '
- && hdr1.ar_name[namelen] != '/';
- namelen++)
- ;
- name = (char *) xmalloc (namelen+1);
- strncpy (name, hdr1.ar_name, namelen);
- *(name + namelen) = 0;
-
- input_member = name;
-
- return member_length;
- }
- return 0; /* tell caller to exit loop */
- }
-
- /* Scan a library and describe each member. */
-
- void
- scan_library (desc)
- int desc;
- {
- int this_subfile_offset = SARMAG;
- int member_length;
-
- while (member_length = decode_library_subfile (desc, this_subfile_offset))
- {
- /* describe every member except the ranlib data if any */
- if (strcmp (input_member, "__.SYMDEF"))
- do_one_rel_file (desc, this_subfile_offset + sizeof (struct ar_hdr));
-
- this_subfile_offset += ((member_length + sizeof (struct ar_hdr)) + 1) & -2;
- }
- }
-
- /* Read a file's header and fill in various pieces of information.
- Return 0 on failure. */
-
- int
- read_header_info (desc, offset, tsize, dsize, bsize)
- int desc;
- long int offset;
- unsigned int *tsize;
- unsigned int *dsize;
- unsigned int *bsize;
- {
- int len;
-
- #ifdef A_OUT
- {
- struct exec hdr;
-
- lseek (desc, offset, 0);
- #ifdef HEADER_SEEK_FD
- /* Skip the headers that encapsulate our data in some other format
- such as COFF. */
- HEADER_SEEK_FD (desc);
- #endif
- len = read (desc, (char *) &hdr, sizeof (struct exec));
- if (len == sizeof (struct exec) && !N_BADMAG (hdr))
- {
- *tsize = hdr.a_text;
- *dsize = hdr.a_data;
- *bsize = hdr.a_bss;
- return 1;
- }
- }
- #endif
-
- #ifdef MACH_O
- {
- struct mach_header mach_header;
- char *hdrbuf;
- struct load_command *load_command;
- struct segment_command *segment_command;
- struct section *section;
- int len, cmd, seg;
-
- lseek (desc, offset, 0);
- len = read (desc, (char *) &mach_header, sizeof (struct mach_header));
- if (len == sizeof (struct mach_header) && mach_header.magic == MH_MAGIC)
- {
- hdrbuf = xmalloc (mach_header.sizeofcmds);
- len = read (desc, hdrbuf, mach_header.sizeofcmds);
- if (len != mach_header.sizeofcmds)
- {
- error_with_file ("failure reading Mach-O load commands");
- return 0;
- }
- load_command = (struct load_command *) hdrbuf;
- for (cmd = 0; cmd < mach_header.ncmds; ++cmd)
- {
- if (load_command->cmd == LC_SEGMENT)
- {
- segment_command = (struct segment_command *) load_command;
- section = (struct section *) ((char *) (segment_command + 1));
- for (seg = 0; seg < segment_command->nsects; ++seg, ++section)
- {
- if (!strncmp(SECT_TEXT, section->sectname, sizeof section->sectname))
- *tsize = section->size;
- else if (!strncmp(SECT_DATA, section->sectname, sizeof section->sectname))
- *dsize = section->size;
- else if (!strncmp(SECT_BSS, section->sectname, sizeof section->sectname))
- *bsize = section->size;
- }
- }
- load_command = (struct load_command *)
- ((char *) load_command + load_command->cmdsize);
- }
- free (hdrbuf);
- return 1;
- }
- }
- #endif
-
- return 0;
- }
-
- void
- do_one_rel_file (desc, offset)
- int desc;
- long int offset;
- {
- unsigned int tsize, dsize, bsize, total;
-
- if (read_header_info (desc, offset, &tsize, &dsize, &bsize))
- {
- total = tsize + dsize + bsize;
- printf ("%u\t%u\t%u\t%u\t%x", tsize, dsize, bsize, total, total);
- }
- else
- {
- error_with_file ("malformed input file (not rel or archive)");
- return;
- }
-
- if (number_of_files > 1 || input_member)
- {
- printf ("\t");
- print_file_name (stdout);
- }
- printf ("\n");
- }
-
- /* Report a fatal error.
- STRING is a printf format string and ARG is one arg for it. */
-
- fatal (string, arg)
- char *string, *arg;
- {
- fprintf (stderr, "size: ");
- fprintf (stderr, string, arg);
- fprintf (stderr, "\n");
- exit (1);
- }
-
- /* Report a nonfatal error.
- STRING is a printf format string and ARG is one arg for it. */
-
- error (string, arg)
- char *string, *arg;
- {
- fprintf (stderr, "size: ");
- fprintf (stderr, string, arg);
- fprintf (stderr, "\n");
- }
-
- /* Report a nonfatal error.
- STRING is printed, followed by the current file name. */
-
- error_with_file (string)
- char *string;
- {
- fprintf (stderr, "size: ");
- print_file_name (stderr);
- fprintf (stderr, ": ");
- fprintf (stderr, string);
- fprintf (stderr, "\n");
- }
-
- /* Report an error using the message for the last failed system call,
- followed by the string NAME. */
-
- perror_name (name)
- char *name;
- {
- extern int errno, sys_nerr;
- extern char *sys_errlist[];
- char *s;
-
- if (errno < sys_nerr)
- s = concat (name, ": ", sys_errlist[errno]);
- else
- s = concat (name, ": ", "unknown error");
- error (s, name);
- }
-
- /* Like malloc but get fatal error if memory is exhausted. */
-
- char *
- xmalloc (size)
- int size;
- {
- char *result = malloc (size);
- if (!result)
- fatal ("virtual memory exhausted", 0);
- return result;
- }
-
- /* Return a newly-allocated string
- whose contents concatenate those of S1, S2, S3. */
-
- char *
- concat (s1, s2, s3)
- char *s1, *s2, *s3;
- {
- int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
- char *result = (char *) xmalloc (len1 + len2 + len3 + 1);
-
- strcpy (result, s1);
- strcpy (result + len1, s2);
- strcpy (result + len1 + len2, s3);
- result[len1 + len2 + len3] = 0;
-
- return result;
- }
-