diff options
Diffstat (limited to 'gnu/usr.bin/ld/symbol.c')
| -rw-r--r-- | gnu/usr.bin/ld/symbol.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/gnu/usr.bin/ld/symbol.c b/gnu/usr.bin/ld/symbol.c deleted file mode 100644 index 350b23b..0000000 --- a/gnu/usr.bin/ld/symbol.c +++ /dev/null @@ -1,194 +0,0 @@ -/*- - * This code is derived from software copyrighted by the Free Software - * Foundation. - * - * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. - * - * Modified 1993 by Paul Kranenburg, Erasmus University - */ - -/* Derived from ld.c: "@(#)ld.c 6.10 (Berkeley) 5/22/91"; */ - -/* Linker `ld' for GNU - Copyright (C) 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. */ - -/* Written by Richard Stallman with some help from Eric Albert. - Set, indirect, and warning symbol features added by Randy Smith. */ - -/* - * symbol table routines - * $FreeBSD$ - */ - -/* Create the symbol table entries for `etext', `edata' and `end'. */ - -#include <sys/param.h> -#include <sys/types.h> -#include <fcntl.h> -#include <a.out.h> -#include <stab.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "ld.h" -#include "dynamic.h" - -symbol *symtab[SYMTABSIZE]; /* The symbol table. */ -int num_hash_tab_syms; /* Number of symbols in symbol hash table. */ - -symbol *edata_symbol; /* the symbol _edata */ -symbol *etext_symbol; /* the symbol _etext */ -symbol *end_symbol; /* the symbol _end */ -symbol *got_symbol; /* the symbol __GLOBAL_OFFSET_TABLE_ */ -symbol *dynamic_symbol; /* the symbol __DYNAMIC */ - -void -symtab_init(relocatable_output) - int relocatable_output; -{ - /* - * Put linker reserved symbols into symbol table. - */ -#ifndef nounderscore -#define ETEXT_SYM "_etext" -#define EDATA_SYM "_edata" -#define END_SYM "_end" -#define DYN_SYM "__DYNAMIC" -#define GOT_SYM "__GLOBAL_OFFSET_TABLE_" -#else -#define ETEXT_SYM "etext" -#define EDATA_SYM "edata" -#define END_SYM "end" -#define DYN_SYM "_DYNAMIC" -#define GOT_SYM "_GLOBAL_OFFSET_TABLE_" -#endif - - dynamic_symbol = getsym(DYN_SYM); - dynamic_symbol->defined = relocatable_output?N_UNDF:(N_DATA | N_EXT); - - got_symbol = getsym(GOT_SYM); - got_symbol->defined = N_DATA | N_EXT; - - if (relocatable_output) - return; - - etext_symbol = getsym(ETEXT_SYM); - edata_symbol = getsym(EDATA_SYM); - end_symbol = getsym(END_SYM); - - etext_symbol->defined = N_TEXT | N_EXT; - edata_symbol->defined = N_DATA | N_EXT; - end_symbol->defined = N_BSS | N_EXT; - - etext_symbol->flags |= GS_REFERENCED; - edata_symbol->flags |= GS_REFERENCED; - end_symbol->flags |= GS_REFERENCED; -} - -/* - * Compute the hash code for symbol name KEY. - */ - -int -hash_string (key) - char *key; -{ - register char *cp; - register int k; - - cp = key; - k = 0; - while (*cp) - k = (((k << 1) + (k >> 14)) ^ (*cp++)) & 0x3fff; - - return k; -} - -/* - * Get the symbol table entry for the global symbol named KEY. - * Create one if there is none. - */ - -symbol * -getsym(key) - char *key; -{ - register int hashval; - register symbol *bp; - - /* Determine the proper bucket. */ - hashval = hash_string(key) % SYMTABSIZE; - - /* Search the bucket. */ - for (bp = symtab[hashval]; bp; bp = bp->link) - if (strcmp(key, bp->name) == 0) - return bp; - - /* Nothing was found; create a new symbol table entry. */ - bp = (symbol *)xmalloc(sizeof(symbol)); - bp->name = (char *)xmalloc(strlen(key) + 1); - strcpy (bp->name, key); - bp->refs = 0; - bp->defined = 0; - bp->value = 0; - bp->common_size = 0; - bp->warning = 0; - bp->undef_refs = 0; - bp->mult_defs = 0; - bp->alias = 0; - bp->setv_count = 0; - bp->symbolnum = 0; - bp->rrs_symbolnum = 0; - - bp->size = 0; - bp->aux = 0; - bp->sorefs = 0; - bp->so_defined = 0; - bp->def_lsp = 0; - bp->jmpslot_offset = -1; - bp->gotslot_offset = -1; - bp->flags = 0; - - /* Add the entry to the bucket. */ - bp->link = symtab[hashval]; - symtab[hashval] = bp; - - ++num_hash_tab_syms; - - return bp; -} - -/* Like `getsym' but return 0 if the symbol is not already known. */ - -symbol * -getsym_soft (key) - char *key; -{ - register int hashval; - register symbol *bp; - - /* Determine which bucket. */ - hashval = hash_string(key) % SYMTABSIZE; - - /* Search the bucket. */ - for (bp = symtab[hashval]; bp; bp = bp->link) - if (strcmp(key, bp->name) == 0) - return bp; - - return 0; -} |
