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f3b36ecb30
mri.o, relax.o): Indicate dependence on ldgram.h. * ld.h (strip_symbols_type): Add value STRIP_SOME. * ldgram.y (OPTION_RETAIN_SYMBOLS_FILE): New terminal token. (lang_add_keepsyms_file): New function. * ldlex.l: Handle "-retain-symbols-file". * ldsym.c (keepsyms_file, kept_syms): New vars. (process_keepsyms): New functihon; reads file, marks symbols for saving. (write_file_locals): File symbols should always be kept. (ldsym_write): Warn about "-retain-symbols-file" overriding "-S" and "-s". Process retain-symbols file before setting symtab. * ldsym.h (SYM_KEEP): New flag for ldsym_type flags. (keepsyms_file, kept_syms): Declare them. * ldmain.c (main): Non-fatal errors should still cause non-zero exit status even with -r.
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/* ldsym.h -
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Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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typedef struct user_symbol_struct
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{
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/* Point to next symbol in this hash chain */
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struct user_symbol_struct *link;
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/* Name of this symbol. */
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CONST char *name;
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/* Pointer to next symbol in order of symbol creation */
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struct user_symbol_struct *next;
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/* Chain of asymbols we see from input files
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note that we point to the entry in the canonical table of
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the pointer to the asymbol, *not* the asymbol. This means
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that we can run back and fix all refs to point to the
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defs nearly for free.
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*/
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asymbol **srefs_chain;
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asymbol **sdefs_chain;
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/* only ever point to the largest ever common definition -
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* all the rest are turned into refs
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* scoms and sdefs are never != NULL at same time
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*/
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asymbol **scoms_chain;
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/* If this symbol is a constructor */
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#define SYM_CONSTRUCTOR 1
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/* If this symbol is a warning symbol */
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#define SYM_WARNING 2
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/* IF this is an alias for another symbol */
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#define SYM_INDIRECT 4
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/* If this symbol explicitly should be kept, despite discarding
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most others. */
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#define SYM_KEEP 8
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int flags;
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} ldsym_type;
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extern CONST char *keepsyms_file;
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extern int kept_syms;
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PROTO(ldsym_type *, ldsym_get, (CONST char *));
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PROTO(ldsym_type *, ldsym_get_soft, (CONST char *));
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PROTO(void, ldsym_print_symbol_table,(void));
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PROTO(void, ldsym_write, (void));
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PROTO(boolean, ldsym_undefined, (CONST char *));
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#define FOR_EACH_LDSYM(x) \
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extern ldsym_type *symbol_head; \
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ldsym_type *x; \
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for (x = symbol_head; x != (ldsym_type *)NULL; x = x->next)
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void EXFUN(ldsym_init,(void));
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