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-rw-r--r--usr.bin/nm/nm.c657
1 files changed, 0 insertions, 657 deletions
diff --git a/usr.bin/nm/nm.c b/usr.bin/nm/nm.c
deleted file mode 100644
index 7a8f086..0000000
--- a/usr.bin/nm/nm.c
+++ /dev/null
@@ -1,657 +0,0 @@
-/*
- * Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Hans Huebner.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static const char copyright[] =
-"@(#) Copyright (c) 1989, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)nm.c 8.1 (Berkeley) 6/6/93";
-#endif
-#endif /* not lint */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-
-#include <arpa/inet.h>
-
-#include <a.out.h>
-#include <ar.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <err.h>
-#include <ranlib.h>
-#include <stab.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-int ignore_bad_archive_entries = 1;
-int print_only_external_symbols;
-int print_only_undefined_symbols;
-int print_all_symbols;
-int print_file_each_line;
-int print_weak_symbols;
-int fcount;
-
-int rev, table;
-const char *typestring(u_char);
-
-/* some macros for symbol type (nlist.n_type) handling */
-#define IS_DEBUGGER_SYMBOL(x) ((x) & N_STAB)
-#define IS_EXTERNAL(x) ((x) & N_EXT)
-#define SYMBOL_TYPE(x) ((x) & (N_TYPE | N_STAB))
-#define SYMBOL_BIND(x) (((x) >> 4) & 0xf)
-
-static void usage(void);
-int process_file(const char *);
-int show_archive(const char *, FILE *);
-int show_objfile(const char *, FILE *);
-void print_symbol(const char *, struct nlist *);
-char typeletter(u_char);
-int fname(const void *, const void *);
-int rname(const void *, const void *);
-int value(const void *, const void *);
-
-int (*sfunc)(const void *, const void *) = fname;
-
-/*
- * main()
- * parse command line, execute process_file() for each file
- * specified on the command line.
- */
-int
-main(int argc, char *argv[])
-{
- int ch, errors;
-
- while ((ch = getopt(argc, argv, "agnoprtuwW")) != -1) {
- switch (ch) {
- case 'a':
- print_all_symbols = 1;
- break;
- case 'g':
- print_only_external_symbols = 1;
- break;
- case 'n':
- sfunc = value;
- break;
- case 'o':
- print_file_each_line = 1;
- break;
- case 'p':
- sfunc = NULL;
- break;
- case 'r':
- rev = 1;
- break;
- case 't':
- table = 1;
- break;
- case 'u':
- print_only_undefined_symbols = 1;
- break;
- case 'w':
- ignore_bad_archive_entries = 0;
- break;
- case 'W':
- print_weak_symbols = 1;
- break;
- case '?':
- default:
- usage();
- }
- }
- fcount = argc - optind;
- argv += optind;
-
- if (rev && sfunc == fname)
- sfunc = rname;
-
- if (!fcount)
- errors = process_file("a.out");
- else {
- errors = 0;
- do {
- errors |= process_file(*argv);
- } while (*++argv);
- }
- exit(errors);
-}
-
-/*
- * process_file()
- * show symbols in the file given as an argument. Accepts archive and
- * object files as input.
- */
-int
-process_file(const char *fn)
-{
- struct exec exec_head;
- FILE *fp;
- int retval;
- char magic[SARMAG];
-
- if (!(fp = fopen(fn, "r"))) {
- warnx("cannot read %s", fn);
- return(1);
- }
-
- if (fcount > 1 && !table)
- (void)printf("\n%s:\n", fn);
-
- /*
- * First check whether this is an object file - read an object
- * header, and skip back to the beginning.
- */
- if (fread((char *)&exec_head, sizeof(exec_head), (size_t)1, fp) != 1) {
- warnx("%s: bad format", fn);
- (void)fclose(fp);
- return(1);
- }
- rewind(fp);
-
- /* this could be an archive */
- if (N_BADMAG(exec_head)) {
- if (fread(magic, sizeof(magic), (size_t)1, fp) != 1 ||
- strncmp(magic, ARMAG, SARMAG)) {
- warnx("%s: not object file or archive", fn);
- (void)fclose(fp);
- return(1);
- }
- retval = show_archive(fn, fp);
- } else
- retval = show_objfile(fn, fp);
- (void)fclose(fp);
- return(retval);
-}
-
-/* scat: concatenate strings, returning new concatenation point
- * and permitting overlap.
- */
-static char
-*scat(char *dest, const char *src)
-{
- char *end;
- int l1 = strlen(dest), l2 = strlen(src);
-
- memmove(dest + l1, src, l2);
- end = dest + l1 + l2;
- *end = 0;
-
- return end;
-}
-
-/*
- * show_archive()
- * show symbols in the given archive file
- */
-int
-show_archive(const char *fn, FILE *fp)
-{
- struct ar_hdr ar_head;
- struct exec exec_head;
- int i, rval;
- long last_ar_off;
- char *p, *name, *ar_name;
- int extra = strlen(fn) + 3;
-
- if ((name = malloc(MAXNAMLEN + extra)) == NULL)
- err(1, NULL);
- ar_name = name + extra;
-
- rval = 0;
-
- /* while there are more entries in the archive */
- while (fread((char *)&ar_head, sizeof(ar_head), (size_t)1, fp) == 1) {
- /* bad archive entry - stop processing this archive */
- if (strncmp(ar_head.ar_fmag, ARFMAG, sizeof(ar_head.ar_fmag))) {
- warnx("%s: bad format archive header", fn);
- (void)free(name);
- return(1);
- }
-
- /* remember start position of current archive object */
- last_ar_off = ftell(fp);
-
- /* skip ranlib entries */
- if (!bcmp(ar_head.ar_name, RANLIBMAG, sizeof(RANLIBMAG) - 1))
- goto skip;
-
- /* handle long names. If one is present, read it in at the
- * end of the "name" buffer.
- */
- if (!bcmp(ar_head.ar_name, AR_EFMT1, sizeof(AR_EFMT1) - 1))
- {
- size_t len = atoi(ar_head.ar_name + sizeof(AR_EFMT1) - 1);
-
- if (len <= 0 || len > MAXNAMLEN)
- {
- warnx("illegal length for format 1 long name");
- goto skip;
- }
- if (fread(ar_name, 1, len, fp) != len)
- {
- warnx("EOF reading format 1 long name");
- (void)free(name);
- return(1);
- }
- ar_name[len] = 0;
- }
- else
- {
- p = ar_head.ar_name;
- for (i = 0; i < (int)sizeof(ar_head.ar_name) && p[i] && p[i] != ' '; i++)
- ar_name[i] = p[i];
- ar_name[i] = 0;
- }
-
- /*
- * construct a name of the form "archive.a:obj.o:" for the
- * current archive entry if the object name is to be printed
- * on each output line
- */
- p = name;
- *p = 0;
- if (print_file_each_line && !table)
- {
- p = scat(p, fn);
- p = scat(p, ":");
- }
- p = scat(p, ar_name);
-
- /* get and check current object's header */
- if (fread((char *)&exec_head, sizeof(exec_head), (size_t)1, fp) != 1) {
- warnx("%s: premature EOF", name);
- (void)free(name);
- return(1);
- }
-
- if (N_BADMAG(exec_head)) {
- if (!ignore_bad_archive_entries) {
- warnx("%s: bad format", name);
- rval = 1;
- }
- } else {
- (void)fseek(fp, -(long)sizeof(exec_head),
- SEEK_CUR);
- if (!print_file_each_line && !table)
- (void)printf("\n%s:\n", name);
- rval |= show_objfile(name, fp);
- }
-
- /*
- * skip to next archive object - it starts at the next
- * even byte boundary
- */
-#define even(x) (((x) + 1) & ~1)
-skip: if (fseek(fp, last_ar_off + even(atol(ar_head.ar_size)),
- SEEK_SET)) {
- warn("%s", fn);
- (void)free(name);
- return(1);
- }
- }
- (void)free(name);
- return(rval);
-}
-
-/*
- * show_objfile()
- * show symbols from the object file pointed to by fp. The current
- * file pointer for fp is expected to be at the beginning of an a.out
- * header.
- */
-int
-show_objfile(const char *objname, FILE *fp)
-{
- struct nlist *names, *np;
- int i, nnames, nrawnames;
- struct exec head;
- int32_t stabsize;
- char *stab;
-
- /* read a.out header */
- if (fread((char *)&head, sizeof(head), (size_t)1, fp) != 1) {
- warnx("%s: cannot read header", objname);
- return(1);
- }
-
- /*
- * skip back to the header - the N_-macros return values relative
- * to the beginning of the a.out header
- */
- if (fseek(fp, -(long)sizeof(head), SEEK_CUR)) {
- warn("%s", objname);
- return(1);
- }
-
- /* stop if this is no valid object file */
- if (N_BADMAG(head)) {
- warnx("%s: bad format", objname);
- return(1);
- }
-
- /* stop if the object file contains no symbol table */
- if (!head.a_syms) {
- warnx("%s: no name list", objname);
- return(1);
- }
-
- if (fseek(fp, (long)N_SYMOFF(head), SEEK_CUR)) {
- warn("%s", objname);
- return(1);
- }
-
- /* get memory for the symbol table */
- if ((names = malloc((size_t)head.a_syms)) == NULL)
- err(1, NULL);
- nrawnames = head.a_syms / sizeof(*names);
- if (fread((char *)names, (size_t)head.a_syms, (size_t)1, fp) != 1) {
- warnx("%s: cannot read symbol table", objname);
- (void)free((char *)names);
- return(1);
- }
-
- /*
- * Following the symbol table comes the string table. The first
- * 4-byte-integer gives the total size of the string table
- * _including_ the size specification itself.
- */
- if (fread((char *)&stabsize, sizeof(stabsize), (size_t)1, fp) != 1) {
- warnx("%s: cannot read stab size", objname);
- (void)free((char *)names);
- return(1);
- }
- if ((stab = malloc((size_t)stabsize)) == NULL)
- err(1, NULL);
-
- /*
- * read the string table offset by 4 - all indices into the string
- * table include the size specification.
- */
- stabsize -= 4; /* we already have the size */
- if (fread(stab + 4, (size_t)stabsize, (size_t)1, fp) != 1) {
- warnx("%s: stab truncated..", objname);
- (void)free((char *)names);
- (void)free(stab);
- return(1);
- }
-
- /*
- * fix up the symbol table and filter out unwanted entries
- *
- * common symbols are characterized by a n_type of N_UNDF and a
- * non-zero n_value -- change n_type to N_COMM for all such
- * symbols to make life easier later.
- *
- * filter out all entries which we don't want to print anyway
- */
- for (np = names, i = nnames = 0; i < nrawnames; np++, i++) {
- if (SYMBOL_TYPE(np->n_type) == N_UNDF && np->n_value)
- np->n_type = N_COMM | (np->n_type & N_EXT);
- if (!print_all_symbols && IS_DEBUGGER_SYMBOL(np->n_type))
- continue;
- if (print_only_external_symbols && !IS_EXTERNAL(np->n_type))
- continue;
- if (print_only_undefined_symbols &&
- SYMBOL_TYPE(np->n_type) != N_UNDF)
- continue;
-
- /*
- * make n_un.n_name a character pointer by adding the string
- * table's base to n_un.n_strx
- *
- * don't mess with zero offsets
- */
- if (np->n_un.n_strx)
- np->n_un.n_name = stab + np->n_un.n_strx;
- else
- np->n_un.n_name = strdup("");
- names[nnames++] = *np;
- }
-
- /* sort the symbol table if applicable */
- if (sfunc)
- qsort((char *)names, (size_t)nnames, sizeof(*names), sfunc);
-
- /* print out symbols */
- for (np = names, i = 0; i < nnames; np++, i++)
- print_symbol(objname, np);
-
- (void)free((char *)names);
- (void)free(stab);
- return(0);
-}
-
-/*
- * print_symbol()
- * show one symbol
- */
-void
-print_symbol(const char *objname, struct nlist *sym)
-{
- if (table) {
- printf("%s|", objname);
- if (SYMBOL_TYPE(sym->n_type) != N_UNDF)
- (void)printf("%08lx", (u_long)sym->n_value);
- (void)printf("|");
- if (IS_DEBUGGER_SYMBOL(sym->n_type))
- (void)printf("-|%02x %04x %5s|", sym->n_other,
- sym->n_desc&0xffff, typestring(sym->n_type));
- else {
- putchar(typeletter(sym->n_type));
- if (print_weak_symbols && SYMBOL_BIND(sym->n_other)== 2)
- putchar('W');
- putchar('|');
- }
-
- /* print the symbol's name */
- (void)printf("%s\n",sym->n_un.n_name);
- return;
- }
- if (print_file_each_line)
- (void)printf("%s:", objname);
-
- /*
- * handle undefined-only format separately (no space is
- * left for symbol values, no type field is printed)
- */
- if (print_only_undefined_symbols) {
- (void)puts(sym->n_un.n_name);
- return;
- }
-
- /* print symbol's value */
- if (SYMBOL_TYPE(sym->n_type) == N_UNDF)
- (void)printf(" ");
- else
- (void)printf("%08lx", (u_long)sym->n_value);
-
- /* print type information */
- if (IS_DEBUGGER_SYMBOL(sym->n_type))
- (void)printf(" - %02x %04x %5s ", sym->n_other,
- sym->n_desc&0xffff, typestring(sym->n_type));
- else {
- putchar(' ');
- putchar(typeletter(sym->n_type));
- if (print_weak_symbols) {
- if (SYMBOL_BIND(sym->n_other) == 2)
- putchar('W');
- else
- putchar(' ');
- }
- putchar(' ');
- }
-
- /* print the symbol's name */
- (void)puts(sym->n_un.n_name);
-}
-
-/*
- * typestring()
- * return the a description string for an STAB entry
- */
-const char *
-typestring(u_char type)
-{
- switch(type) {
- case N_BCOMM:
- return("BCOMM");
- case N_ECOML:
- return("ECOML");
- case N_ECOMM:
- return("ECOMM");
- case N_ENTRY:
- return("ENTRY");
- case N_FNAME:
- return("FNAME");
- case N_FUN:
- return("FUN");
- case N_GSYM:
- return("GSYM");
- case N_LBRAC:
- return("LBRAC");
- case N_LCSYM:
- return("LCSYM");
- case N_LENG:
- return("LENG");
- case N_LSYM:
- return("LSYM");
- case N_PC:
- return("PC");
- case N_PSYM:
- return("PSYM");
- case N_RBRAC:
- return("RBRAC");
- case N_RSYM:
- return("RSYM");
- case N_SLINE:
- return("SLINE");
- case N_SO:
- return("SO");
- case N_SOL:
- return("SOL");
- case N_SSYM:
- return("SSYM");
- case N_STSYM:
- return("STSYM");
- }
- return("???");
-}
-
-/*
- * typeletter()
- * return a description letter for the given basic type code of an
- * symbol table entry. The return value will be upper case for
- * external, lower case for internal symbols.
- */
-char
-typeletter(u_char type)
-{
- switch(SYMBOL_TYPE(type)) {
- case N_ABS:
- return(IS_EXTERNAL(type) ? 'A' : 'a');
- case N_BSS:
- return(IS_EXTERNAL(type) ? 'B' : 'b');
- case N_COMM:
- return(IS_EXTERNAL(type) ? 'C' : 'c');
- case N_DATA:
- return(IS_EXTERNAL(type) ? 'D' : 'd');
- case N_FN:
- /* This one is overloaded. EXT = Filename, INT = warn refs */
- return(IS_EXTERNAL(type) ? 'F' : 'w');
- case N_INDR:
- return(IS_EXTERNAL(type) ? 'I' : 'i');
- case N_TEXT:
- return(IS_EXTERNAL(type) ? 'T' : 't');
- case N_UNDF:
- return(IS_EXTERNAL(type) ? 'U' : 'u');
- }
- return('?');
-}
-
-int
-fname(const void *a0, const void *b0)
-{
- const struct nlist *a = a0, *b = b0;
-
- return(strcmp(a->n_un.n_name, b->n_un.n_name));
-}
-
-int
-rname(const void *a0, const void *b0)
-{
- const struct nlist *a = a0, *b = b0;
-
- return(strcmp(b->n_un.n_name, a->n_un.n_name));
-}
-
-int
-value(const void *a0, const void *b0)
-{
- const struct nlist *a = a0, *b = b0;
-
- if (SYMBOL_TYPE(a->n_type) == N_UNDF)
- if (SYMBOL_TYPE(b->n_type) == N_UNDF)
- return(0);
- else
- return(-1);
- else if (SYMBOL_TYPE(b->n_type) == N_UNDF)
- return(1);
- if (rev) {
- if (a->n_value == b->n_value)
- return(rname(a0, b0));
- return(b->n_value > a->n_value ? 1 : -1);
- } else {
- if (a->n_value == b->n_value)
- return(fname(a0, b0));
- return(a->n_value > b->n_value ? 1 : -1);
- }
-}
-
-static void
-usage(void)
-{
- (void)fprintf(stderr, "usage: nm [-agnoprtuwW] [file ...]\n");
- exit(1);
-}
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