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- /* Describe symbol table of a rel file.
- Copyright (C) 1986, 1988 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>
- #include "getopt.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
- #ifndef A_OUT
- #include <nlist.h>
- #ifndef N_TEXT
- #define N_TEXT 4
- #define N_DATA 6
- #define N_BSS 8
- #endif
- #ifndef N_FN
- #define N_FN 15
- #endif
- #endif
- #include <sys/loader.h>
- #endif
-
- /* Always use the GNU version of debugging symbol type codes, if possible. */
- #include "stab.h"
-
- /* Struct or union for header of object file. */
-
- #ifdef USG
- #include <string.h>
- /* You might need to compile with -I/usr/include/sys if your fcntl.h
- isn't in /usr/include (which is where it should be according to POSIX). */
- #include <fcntl.h>
- #else
- #include <strings.h>
- #endif
-
- /* Alloca definitions and includes... */
-
- /* If compiled with GNU C, use the built-in alloca */
- #ifdef __GNUC__
- #define alloca __builtin_alloca
- #else
- /* If on a sun 4, make sure to include the right definition. */
- #if defined(sun) && defined(sparc)
- #include "alloca.h"
- #else
- char *alloca ();
- #endif
- #endif
-
- char *malloc (), *realloc ();
-
- char *xmalloc (), *xrealloc ();
-
- /* C++ demangler stuff. */
- char *cplus_demangle ();
-
- /* Print NAME on STREAM, demangling if necessary. */
- void
- fprint_name (stream, name)
- FILE *stream;
- char *name;
- {
- char *demangled = cplus_demangle (name);
- if (demangled == NULL)
- fputs (name, stream);
- else
- {
- fputs (demangled, stream);
- free (demangled);
- }
- }
-
- /* Special global symbol types understood by GNU LD. */
-
- /* The following type indicates the definition of a symbol as being
- an indirect reference to another symbol. The other symbol
- appears as an undefined reference, immediately following this symbol.
-
- Indirection is asymmetrical. The other symbol's value will be used
- to satisfy requests for the indirect symbol, but not vice versa.
- If the other symbol does not have a definition, libraries will
- be searched to find a definition. */
- #ifndef N_INDR
- #define N_INDR 0xa
- #endif
-
- /* Warning message symbol. The name of this symbol will be printed if
- any symbols from it's file are required by the linker. */
- #ifndef N_WARNING
- #define N_WARNING 0x1e
- #endif
-
-
- /* The following symbols refer to set elements.
- All the N_SET[ATDB] symbols with the same name form one set.
- Space is allocated for the set in the text section, and each set
- element's value is stored into one word of the space.
- The first word of the space is the length of the set (number of elements).
-
- The address of the set is made into an N_SETV symbol
- whose name is the same as the name of the set.
- This symbol acts like a N_DATA global symbol
- in that it can satisfy undefined external references. */
-
- #ifndef N_SETA
- #define N_SETA 0x14 /* Absolute set element symbol */
- #endif /* This is input to LD, in a .o file. */
-
- #ifndef N_SETT
- #define N_SETT 0x16 /* Text set element symbol */
- #endif /* This is input to LD, in a .o file. */
-
- #ifndef N_SETD
- #define N_SETD 0x18 /* Data set element symbol */
- #endif /* This is input to LD, in a .o file. */
-
- #ifndef N_SETB
- #define N_SETB 0x1A /* Bss set element symbol */
- #endif /* This is input to LD, in a .o file. */
-
- /* Macros dealing with the set element symbols defined in a.out.h */
- #define SET_ELEMENT_P(x) ((x)>=N_SETA&&(x)<=(N_SETB|N_EXT))
- #define TYPE_OF_SET_ELEMENT(x) ((x)-N_SETA+N_ABS)
-
- #ifndef N_SETV
- #define N_SETV 0x1C /* Pointer to set vector in text area. */
- #endif /* This is output from LD. */
-
- #ifndef __GNU_STAB__
-
- /* Line number for the data section. This is to be used to describe
- the source location of a variable declaration. */
- #ifndef N_DSLINE
- #define N_DSLINE (N_SLINE+N_DATA-N_TEXT)
- #endif
-
- /* Line number for the bss section. This is to be used to describe
- the source location of a variable declaration. */
- #ifndef N_BSLINE
- #define N_BSLINE (N_SLINE+N_BSS-N_TEXT)
- #endif
-
- #endif /* not __GNU_STAB__ */
-
- /* Name of this program. */
-
- char *program_name;
-
- /* Number of input files 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;
-
- #ifdef MACH_O
- /* Section ordinals for N_SECT references. */
- int text_section;
- int data_section;
- int bss_section;
- #endif
-
- /* Offset within archive of the current member,
- if we are processing an archive. */
-
- int member_offset;
-
- /* Command options. */
-
- int external_only; /* nonzero means print external symbols only. */
- int sort_numerically; /* sort in numerical order rather than alphabetic */
- int reverse_sort; /* sort in downward (alphabetic or numeric) order. */
- int no_sort; /* don't sort; print symbols in order in the file. */
- int undefined_only; /* print undefined symbols only. */
- int file_on_each_line; /* print file name on each line. */
- int debugger_syms; /* print the debugger-only symbols. */
- int print_symdefs; /* describe the __.SYMDEF data in any archive file specified. */
-
- /* The __.SYMDEF member of an archive has the following format:
- 1) A longword saying the size of the symdef data that follows
- 2) Zero or more struct symdef filling that many bytes
- 3) A longword saying how many bytes of strings follow
- 4) That many bytes of string data.
- */
-
- struct symdef
- {
- long stringoffset; /* Offset of this symbol's name in the string data */
- long offset; /* Offset in the archive of the header-data for the member that
- defines this symbol. */
- };
-
- /* Create a table of debugging stab-codes and corresponding names. */
- #ifdef __GNU_STAB__
- #define __define_stab(NAME, CODE, STRING) {NAME, STRING},
- struct {enum __stab_debug_code code; char *string;} stab_names[]
- = {
- #include "stab.def"
- };
- #undef __define_stab
- #endif
-
- void decode_switch ();
- int decode_arg ();
- void do_one_file (), do_one_rel_file (), do_symdef_member ();
- char *concat ();
-
- main (argc, argv)
- char **argv;
- int argc;
- {
- int i;
- int c;
- extern int optind;
- int ind;
- static struct option long_options[] =
- {
- {"all", 0, &debugger_syms, 1},
- {"extern-only", 0, &external_only, 1},
- {"numeric-sort", 0, &sort_numerically, 1},
- {"print-file-name", 0, &file_on_each_line,1},
- {"no-sort", 0, &no_sort, 1},
- {"reverse", 0, &reverse_sort, 1},
- {"print-symdefs", 0, &print_symdefs, 1},
- {"undefined-only",0, &undefined_only, 1},
- {NULL, 0, NULL, 0}
- };
-
- program_name = argv[0];
-
- number_of_files = 0;
- external_only = 0;
- sort_numerically = 0;
- reverse_sort = 0;
- no_sort = 0;
- undefined_only = 0;
- file_on_each_line = 0;
- debugger_syms = 0;
- print_symdefs = 0;
-
- while ((c = getopt_long (argc, argv, "agnoprsu", long_options, &ind)) != EOF)
- switch (c)
- {
- case 0:
- break;
-
- case 'a':
- debugger_syms = 1;
- break;
-
- case 'g':
- external_only = 1;
- break;
-
- case 'n':
- sort_numerically = 1;
- break;
-
- case 'o':
- file_on_each_line = 1;
- break;
-
- case 'p':
- no_sort = 1;
- break;
-
- case 'r':
- reverse_sort = 1;
- break;
-
- case 's':
- print_symdefs = 1;
- break;
-
- case 'u':
- undefined_only = 1;
- break;
-
- default:
- fprintf (stderr, "\
- Usage: %s [-agnoprsu] [+all] [+extern-only] [+numeric-sort]\n\
- [+print-file-name] [+no-sort] [+reverse] [+print-symdefs]\n\
- [+undefined-only] [file...]\n", program_name);
- exit (1);
- break;
- }
-
- number_of_files = argc - optind;
-
- /* Now scan again and print the files. */
-
- if (argc == optind)
- do_one_file ("a.out");
- else
- for (i = optind; 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, nchars;
- char armag[SARMAG];
-
- desc = open (name, O_RDONLY, 0);
-
- if (desc < 0)
- {
- perror_name (name);
- return;
- }
-
- input_name = name;
- input_member = 0;
-
- nchars = read (desc, armag, SARMAG);
- if (nchars == SARMAG && !strncmp(armag, ARMAG, SARMAG))
- scan_library (desc);
- else
- do_one_rel_file (desc, 0);
-
- 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.
- A pointer to the member's name is stored into *MEMBER_NAME_PTR.
-
- If there are no more valid members, zero is returned. */
-
- int
- decode_library_subfile (desc, subfile_offset, member_name_ptr)
- int desc;
- int subfile_offset;
- char **member_name_ptr;
- {
- 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 in ");
-
- else
- {
- for (namelen = 0; ; namelen++)
- if (hdr1.ar_name[namelen] == 0 || hdr1.ar_name[namelen] == ' '
- /* Some systems use a slash? Strange. */
- || hdr1.ar_name[namelen] == '/')
- break;
-
- name = (char *) xmalloc (namelen+1);
- strncpy (name, hdr1.ar_name, namelen);
- name[namelen] = 0;
-
- *member_name_ptr = 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;
-
- if (!file_on_each_line)
- printf ("\n%s:\n", input_name);
-
- while (1)
- {
- member_length
- = decode_library_subfile (desc, this_subfile_offset, &input_member);
- if (member_length == 0)
- break;
-
- /* 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));
- else if (print_symdefs)
- do_symdef_member (desc, this_subfile_offset + sizeof (struct ar_hdr), member_length);
-
- 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, syms_offset, syms_size, strs_offset, strs_size)
- int desc;
- long int offset;
- long int *syms_offset;
- unsigned int *syms_size;
- long int *strs_offset;
- unsigned int *strs_size;
- {
- 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))
- {
- *syms_offset = N_SYMOFF(hdr);
- *syms_size = hdr.a_syms;
- *strs_offset = N_STROFF(hdr);
- lseek(desc, N_STROFF(hdr) + offset, 0);
- if (read (desc, (char *) strs_size, sizeof *strs_size) != sizeof *strs_size)
- {
- error_with_file ("cannot read string table size in ");
- return 0;
- }
- 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;
- struct symtab_command *symtab_command;
- int symtab_seen;
- int len, cmd, seg, ordinal;
-
- symtab_seen = 0;
-
- 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 in ");
- return 0;
- }
- load_command = (struct load_command *) hdrbuf;
- ordinal = 1;
- for (cmd = 0; cmd < mach_header.ncmds; ++cmd)
- {
- switch (load_command->cmd)
- {
- case 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, ++ordinal)
- {
- if (!strncmp(SECT_TEXT, section->sectname, sizeof section->sectname))
- text_section = ordinal;
- else if (!strncmp(SECT_DATA, section->sectname, sizeof section->sectname))
- data_section = ordinal;
- else if (!strncmp(SECT_BSS, section->sectname, sizeof section->sectname))
- bss_section = ordinal;
- }
- break;
- case LC_SYMTAB:
- if (symtab_seen)
- error_with_file ("more than one LC_SYMTAB in ");
- else
- {
- symtab_seen = 1;
- symtab_command = (struct symtab_command *) load_command;
- *syms_offset = symtab_command->symoff;
- *syms_size = symtab_command->nsyms * sizeof (struct nlist);
- *strs_offset = symtab_command->stroff;
- *strs_size = symtab_command->strsize;
- }
- break;
- }
- load_command = (struct load_command *)
- ((char *) load_command + load_command->cmdsize);
- }
- free (hdrbuf);
- return 1;
- }
- }
- #endif
-
- return 0;
- }
-
- void print_symbols (), print_one_symbol ();
- void read_header ();
- int alphacompare (), valuecompare ();
- int filter_symbols ();
-
- void
- do_one_rel_file (desc, offset)
- int desc;
- int offset;
- {
- struct nlist *symbols_and_strings;
- int symcount;
- int totalsize;
- char *strings;
- long int syms_offset, strs_offset;
- unsigned int syms_size, strs_size;
-
- if (!read_header_info (desc, offset, &syms_offset, &syms_size, &strs_offset, &strs_size))
- {
- error_with_file ("malformed input (not a rel file or archive) in ");
- return;
- }
-
- /* Number of symbol entries in the file. */
- symcount = syms_size / sizeof (struct nlist);
-
- totalsize = strs_size + syms_size;
-
- /* Allocate space for symbol entries and string table. */
- symbols_and_strings = (struct nlist *) xmalloc (totalsize);
- strings = (char *) symbols_and_strings + syms_size;
-
- /* Read them both in. */
- lseek (desc, syms_offset + offset, 0);
- if (syms_size != read (desc, (char *) symbols_and_strings, syms_size))
- {
- error_with_file ("premature end of file in symbols of ");
- return;
- }
- lseek (desc, strs_offset + offset, 0);
- if (strs_size != read (desc, (char *) strings, strs_size))
- {
- error_with_file ("premature end of file in strings of ");
- return;
- }
-
- /* Identify this file, if desired. */
-
- if (!file_on_each_line && (number_of_files > 1 || input_member))
- printf ("\n%s:\n", input_member ? input_member : input_name);
-
- /* Discard the symbols we don't want to print; compact the rest down. */
-
- symcount = filter_symbols (symbols_and_strings, symcount, strings);
-
- /* Modify each symbol entry to point directly at the symbol name.
- This is so the sort routine does not need to be passed
- the value of `strings' separately. */
-
- {
- struct nlist *p = symbols_and_strings;
- struct nlist *end = symbols_and_strings + symcount;
-
- for (; p < end; p++)
- {
- /* A zero index means there is no string. */
- if (p->n_un.n_strx != 0)
- {
- if (p->n_un.n_strx > 0 && p->n_un.n_strx < strs_size)
- p->n_un.n_name = strings + p->n_un.n_strx;
- else
- {
- error_with_file ("bad string table offset in ");
- return;
- }
- }
- }
- }
-
- /* Sort the symbols if desired. */
-
- if (!no_sort)
- qsort (symbols_and_strings, symcount, sizeof (struct nlist),
- sort_numerically ? valuecompare : alphacompare);
-
- /* Print the symbols in the order they are now in. */
-
- print_symbols (symbols_and_strings, symcount);
-
- free (symbols_and_strings);
- }
-
- /* Choose which symbol entries to print;
- compact them downward to get rid of the rest.
- Return the number of symbols to be printed. */
-
- int
- filter_symbols (syms, symcount, strings)
- struct nlist *syms;
- int symcount;
- char *strings;
- {
- struct nlist *from = syms, *to = syms;
- struct nlist *end = syms + symcount;
-
- while (from < end)
- {
- int keep = 0;
-
- /* undefined sym or common sym */
- if (from->n_type == N_EXT) keep = !undefined_only || !from->n_value;
- /* global defined sym */
- else if (from->n_type & N_EXT) keep = !undefined_only;
- /* debugger sym: normally don't print */
- else if (from->n_type & ~(N_TYPE | N_EXT)) keep = debugger_syms;
- /* local sym */
- else keep = !external_only && !undefined_only;
-
- if (keep)
- *to++ = *from;
- from++;
- }
-
- return to - syms;
- }
-
- /* Comparison functions for sorting symbols. */
-
- int
- alphacompare (sym1, sym2)
- struct nlist *sym1, *sym2;
- {
- if (reverse_sort)
- {
- if (!sym2->n_un.n_name)
- {
- if (sym1->n_un.n_name) return -1;
- else return 0;
- }
- if (!sym1->n_un.n_name) return 1;
- return strcmp (sym2->n_un.n_name, sym1->n_un.n_name);
- }
- else
- {
- if (!sym1->n_un.n_name)
- {
- if (sym2->n_un.n_name) return -1;
- else return 0;
- }
- if (!sym2->n_un.n_name) return 1;
- return strcmp (sym1->n_un.n_name, sym2->n_un.n_name);
- }
- }
-
-
- int
- valuecompare (sym1, sym2)
- struct nlist *sym1, *sym2;
- {
- if (reverse_sort)
- return sym2->n_value - sym1->n_value;
- else
- return sym1->n_value - sym2->n_value;
- }
-
- void
- print_symbols (syms, symcount)
- struct nlist *syms;
- int symcount;
- {
- int i;
-
- for (i = 0; i < symcount; i++)
- print_one_symbol (&syms[i]);
- }
-
- void
- print_one_symbol (sym)
- struct nlist *sym;
- {
- if (file_on_each_line)
- {
- print_file_name (stdout);
- printf (":");
- }
-
- if (undefined_only)
- {
- if (sym->n_type == N_EXT && !sym->n_value)
- {
- fprint_name (stdout, sym->n_un.n_name);
- printf ("\n");
- }
- return;
- }
-
- if (sym->n_type & ~N_EXT || sym->n_value)
- printf ("%08x ", sym->n_value);
- else printf (" ");
-
- switch (sym->n_type)
- {
- case N_EXT:
- if (sym->n_value) printf ("C");
- else printf ("U");
- break;
-
- case 0:
- if (sym->n_value) printf ("c");
- else printf ("u");
- break;
-
- case N_ABS | N_EXT:
- printf ("A");
- break;
-
- case N_ABS:
- printf ("a");
- break;
-
- case N_TEXT | N_EXT:
- printf ("T");
- break;
-
- case N_TEXT:
- printf ("t");
- break;
-
- case N_DATA | N_EXT:
- printf ("D");
- break;
-
- case N_DATA:
- printf ("d");
- break;
-
- case N_BSS | N_EXT:
- printf ("B");
- break;
-
- case N_BSS:
- printf ("b");
- break;
-
- case N_SETV | N_EXT:
- printf ("V");
- break;
-
- case N_SETV:
- printf ("v");
- break;
-
- case N_SETA | N_EXT:
- printf ("L");
- break;
-
- case N_SETA:
- printf ("l");
- break;
-
- case N_SETT | N_EXT:
- printf ("X");
- break;
-
- case N_SETT:
- printf ("x");
- break;
-
- case N_SETD | N_EXT:
- printf ("Z");
- break;
-
- case N_SETD:
- printf ("z");
- break;
-
- case N_SETB | N_EXT:
- printf ("S");
- break;
-
- case N_SETB:
- printf ("s");
- break;
-
- case N_INDR | N_EXT:
- printf ("I");
- break;
-
- case N_INDR:
- printf ("i");
- break;
-
- case N_WARNING | N_EXT:
- printf ("W");
- break;
-
- case N_WARNING:
- printf ("w");
- break;
-
- #ifdef N_SECT
- case N_SECT:
- if (sym->n_sect == text_section)
- printf ("t");
- else if (sym->n_sect == data_section)
- printf ("d");
- else if (sym->n_sect == bss_section)
- printf ("b");
- else
- printf ("%d", sym->n_sect);
- break;
-
- case N_SECT | N_EXT:
- if (sym->n_sect == text_section)
- printf ("T");
- else if (sym->n_sect == data_section)
- printf ("D");
- else if (sym->n_sect == bss_section)
- printf ("B");
- else
- printf ("%d", sym->n_sect);
- break;
- #endif
-
- default:
- {
- char *s;
- int i;
- #ifdef __GNU_STAB__
- s = "";
- for (i = sizeof (stab_names) / sizeof (stab_names[0]) - 1;
- i >= 0; i--)
- {
- if (stab_names[i].code
- == (enum __stab_debug_code) sym->n_type)
- {
- s = stab_names[i].string;
- break;
- }
- }
- #else /* not __GNU_STAB__ */
- switch (sym->n_type)
- {
- case N_GSYM:
- s = "GSYM";
- break;
- case N_FNAME:
- s = "FNAME";
- break;
- case N_FUN:
- s = "FUN";
- break;
- case N_STSYM:
- s = "STSYM";
- break;
- case N_LCSYM:
- s = "LCSYM";
- break;
- case N_RSYM:
- s = "RSYM";
- break;
- case N_SLINE:
- s = "SLINE";
- break;
- case N_DSLINE:
- s = "DSLINE";
- break;
- case N_BSLINE:
- s = "BSLINE";
- break;
- case N_SSYM:
- s = "SSYM";
- break;
- case N_SO:
- s = "SO";
- break;
- case N_LSYM:
- s = "LSYM";
- break;
- case N_SOL:
- s = "SOL";
- break;
- case N_PSYM:
- s = "PSYM";
- break;
- case N_ENTRY:
- s = "ENTRY";
- break;
- case N_LBRAC:
- s = "LBRAC";
- break;
- case N_RBRAC:
- s = "RBRAC";
- break;
- case N_BCOMM:
- s = "BCOMM";
- break;
- case N_ECOMM:
- s = "ECOMM";
- break;
- case N_ECOML:
- s = "ECOML";
- break;
- case N_LENG:
- s = "LENG";
- break;
- default:
- s = "";
- }
- #endif /* not __GNU_STAB__ */
- /* %x treats them as unsigned anyway, so if we didn't cast
- them we'd get 0xffffffff for all 1's instead of 0xff
- or 0xffff. */
- printf ("- %02x %04x %5s",
- #ifdef N_SECT
- (unsigned char) sym->n_sect,
- #else
- (unsigned char) sym->n_other,
- #endif
- (unsigned short) sym->n_desc, s);
- }
- }
-
- printf (" ");
-
- if (sym->n_un.n_name)
- fprint_name (stdout, sym->n_un.n_name);
-
- printf ("\n");
- }
-
- void
- do_symdef_member (desc, offset, member_length)
- int desc;
- int offset;
- int member_length;
- {
- int symdef_size;
- int nsymdefs;
- struct symdef *symdefs;
- int stringsize;
- char *strings;
- int i;
- char *member_name;
- int member_offset;
-
- /* read the string-table-length out of the file */
-
- lseek (desc, offset, 0);
- if (sizeof symdef_size != read (desc, &symdef_size, sizeof symdef_size))
- {
- error_with_file ("premature eof in ");
- return;
- }
-
- if (symdef_size < 0)
- {
- error_with_file ("invalid size value in ");
- return;
- }
-
- nsymdefs = symdef_size / sizeof (struct symdef);
- symdefs = (struct symdef *) alloca (symdef_size);
- if (symdef_size != read (desc, symdefs, symdef_size))
- {
- error_with_file ("premature eof in ");
- return;
- }
-
- if (stringsize < 0)
- {
- error_with_file ("invalid size value in ");
- return;
- }
-
- if (sizeof stringsize != read (desc, &stringsize, sizeof stringsize))
- {
- error_with_file ("premature eof in ");
- return;
- }
-
- strings = (char *) alloca (stringsize);
- if (stringsize != read (desc, strings, stringsize))
- {
- error_with_file ("premature eof in ");
- return;
- }
-
- if (stringsize + symdef_size + sizeof stringsize + sizeof symdef_size != member_length)
- {
- error_with_file ("size of data isn't what the data calls for in ");
- return;
- }
-
- if (!file_on_each_line && (number_of_files > 1 || input_member))
- printf ("\n%s:\n", input_member ? input_member : input_name);
-
- member_offset = -1;
- for (i = 0; i < nsymdefs; i++)
- {
- if (symdefs[i].stringoffset < 0 || symdefs[i].stringoffset >= stringsize)
- {
- error_with_file ("invalid entry in ");
- return;
- }
- if (member_offset != symdefs[i].offset)
- {
- member_offset = symdefs[i].offset;
- decode_library_subfile (desc, member_offset, &member_name);
- }
- if (file_on_each_line)
- {
- print_file_name (stdout);
- printf (":");
- }
- printf ("%s in %s\n", symdefs[i].stringoffset + strings, member_name);
- }
- }
-
- /* 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, "%s: ", program_name);
- 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, "%s: ", program_name);
- 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, "%s: ", program_name);
- fprintf (stderr, string);
- print_file_name (stderr);
- fprintf (stderr, "\n");
- }
-
- /* Report a fatal 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 ("", sys_errlist[errno], " for %s");
- else
- s = "cannot open %s";
- 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;
- }
-
- /* Like realloc but get fatal error if out of memory. */
- char *
- xrealloc (p, size)
- char *p;
- int size;
- {
- char *result = realloc(p, 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;
- }
-