633 lines
13 KiB
C
633 lines
13 KiB
C
/* CYGNUS LOCAL: whole file jason */
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/* Scan linker error messages for missing template instantiations and provide
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them.
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Copyright (C) 1995 Free Software Foundation, Inc.
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Contributed by Jason Merrill (jason@cygnus.com).
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This file is part of GNU CC.
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GNU CC 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, or (at your option)
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any later version.
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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <ctype.h>
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#include "config.h"
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#include "hash.h"
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#include "demangle.h"
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#define MAX_ITERATIONS 17
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/* Obstack allocation and deallocation routines. */
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#define obstack_chunk_alloc xmalloc
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#define obstack_chunk_free free
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extern char * xmalloc PARAMS((unsigned));
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extern void free ();
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extern char * getenv ();
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/* Defined in collect2.c. */
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extern int vflag, debug;
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extern char *ldout;
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extern char *c_file_name;
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extern struct obstack temporary_obstack;
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extern struct obstack permanent_obstack;
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extern char * temporary_firstobj;
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/* Defined in the automatically-generated underscore.c. */
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extern int prepends_underscore;
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static int tlink_verbose;
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/* Hash table code. */
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typedef struct symbol_hash_entry
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{
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struct hash_entry root;
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struct file_hash_entry *file;
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int chosen;
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int tweaking;
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int tweaked;
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} symbol;
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typedef struct file_hash_entry
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{
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struct hash_entry root;
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const char *args;
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const char *dir;
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const char *main;
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int tweaking;
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} file;
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typedef struct demangled_hash_entry
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{
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struct hash_entry root;
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const char *mangled;
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} demangled;
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static struct hash_table symbol_table;
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static struct hash_entry *
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symbol_hash_newfunc (entry, table, string)
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struct hash_entry *entry;
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struct hash_table *table;
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const char *string;
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{
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struct symbol_hash_entry *ret = (struct symbol_hash_entry *) entry;
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if (ret == NULL)
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{
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ret = ((struct symbol_hash_entry *)
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hash_allocate (table, sizeof (struct symbol_hash_entry)));
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if (ret == NULL)
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return NULL;
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}
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ret = ((struct symbol_hash_entry *)
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hash_newfunc ((struct hash_entry *) ret, table, string));
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ret->file = NULL;
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ret->chosen = 0;
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ret->tweaking = 0;
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ret->tweaked = 0;
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return (struct hash_entry *) ret;
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}
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static struct symbol_hash_entry *
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symbol_hash_lookup (string, create)
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const char *string;
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boolean create;
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{
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return ((struct symbol_hash_entry *)
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hash_lookup (&symbol_table, string, create, true));
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}
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static struct hash_table file_table;
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static struct hash_entry *
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file_hash_newfunc (entry, table, string)
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struct hash_entry *entry;
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struct hash_table *table;
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const char *string;
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{
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struct file_hash_entry *ret = (struct file_hash_entry *) entry;
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if (ret == NULL)
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{
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ret = ((struct file_hash_entry *)
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hash_allocate (table, sizeof (struct file_hash_entry)));
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if (ret == NULL)
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return NULL;
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}
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ret = ((struct file_hash_entry *)
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hash_newfunc ((struct hash_entry *) ret, table, string));
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ret->args = NULL;
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ret->dir = NULL;
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ret->main = NULL;
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ret->tweaking = 0;
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return (struct hash_entry *) ret;
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}
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static struct file_hash_entry *
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file_hash_lookup (string)
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const char *string;
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{
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return ((struct file_hash_entry *)
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hash_lookup (&file_table, string, true, true));
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}
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static struct hash_table demangled_table;
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static struct hash_entry *
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demangled_hash_newfunc (entry, table, string)
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struct hash_entry *entry;
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struct hash_table *table;
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const char *string;
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{
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struct demangled_hash_entry *ret = (struct demangled_hash_entry *) entry;
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if (ret == NULL)
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{
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ret = ((struct demangled_hash_entry *)
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hash_allocate (table, sizeof (struct demangled_hash_entry)));
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if (ret == NULL)
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return NULL;
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}
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ret = ((struct demangled_hash_entry *)
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hash_newfunc ((struct hash_entry *) ret, table, string));
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ret->mangled = NULL;
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return (struct hash_entry *) ret;
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}
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static struct demangled_hash_entry *
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demangled_hash_lookup (string, create)
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const char *string;
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boolean create;
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{
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return ((struct demangled_hash_entry *)
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hash_lookup (&demangled_table, string, create, true));
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}
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/* Stack code. */
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struct symbol_stack_entry
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{
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symbol *value;
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struct symbol_stack_entry *next;
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};
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struct obstack symbol_stack_obstack;
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struct symbol_stack_entry *symbol_stack;
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struct file_stack_entry
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{
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file *value;
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struct file_stack_entry *next;
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};
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struct obstack file_stack_obstack;
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struct file_stack_entry *file_stack;
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static void
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symbol_push (p)
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symbol *p;
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{
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struct symbol_stack_entry *ep = (struct symbol_stack_entry *) obstack_alloc
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(&symbol_stack_obstack, sizeof (struct symbol_stack_entry));
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ep->value = p;
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ep->next = symbol_stack;
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symbol_stack = ep;
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}
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static symbol *
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symbol_pop ()
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{
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struct symbol_stack_entry *ep = symbol_stack;
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symbol *p;
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if (ep == NULL)
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return NULL;
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p = ep->value;
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symbol_stack = ep->next;
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obstack_free (&symbol_stack_obstack, ep);
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return p;
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}
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static void
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file_push (p)
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file *p;
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{
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struct file_stack_entry *ep;
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if (p->tweaking)
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return;
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ep = (struct file_stack_entry *) obstack_alloc
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(&file_stack_obstack, sizeof (struct file_stack_entry));
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ep->value = p;
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ep->next = file_stack;
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file_stack = ep;
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p->tweaking = 1;
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}
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static file *
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file_pop ()
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{
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struct file_stack_entry *ep = file_stack;
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file *p;
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if (ep == NULL)
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return NULL;
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p = ep->value;
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file_stack = ep->next;
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obstack_free (&file_stack_obstack, ep);
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p->tweaking = 0;
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return p;
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}
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/* Other machinery. */
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static void
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tlink_init ()
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{
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char *p;
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hash_table_init (&symbol_table, symbol_hash_newfunc);
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hash_table_init (&file_table, file_hash_newfunc);
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hash_table_init (&demangled_table, demangled_hash_newfunc);
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obstack_begin (&symbol_stack_obstack, 0);
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obstack_begin (&file_stack_obstack, 0);
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p = getenv ("TLINK_VERBOSE");
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if (p)
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tlink_verbose = atoi (p);
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else
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{
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tlink_verbose = 1;
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if (vflag)
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tlink_verbose = 2;
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if (debug)
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tlink_verbose = 3;
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}
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}
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static int
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tlink_execute (prog, argv, redir)
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char *prog;
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char **argv;
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char *redir;
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{
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collect_execute (prog, argv, redir);
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return collect_wait (prog);
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}
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static char *
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frob_extension (s, ext)
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char *s, *ext;
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{
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char *p = (char *) rindex (s, '/');
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if (! p)
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p = s;
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p = (char *) rindex (p, '.');
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if (! p)
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p = s + strlen (s);
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obstack_grow (&temporary_obstack, s, p - s);
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return obstack_copy0 (&temporary_obstack, ext, strlen (ext));
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}
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static char *
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obstack_fgets (stream, ob)
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FILE *stream;
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struct obstack *ob;
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{
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int c;
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while ((c = getc (stream)) != EOF && c != '\n')
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obstack_1grow (ob, c);
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if (obstack_object_size (ob) == 0)
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return NULL;
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obstack_1grow (ob, '\0');
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return obstack_finish (ob);
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}
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static char *
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tfgets (stream)
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FILE *stream;
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{
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return obstack_fgets (stream, &temporary_obstack);
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}
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static char *
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pfgets (stream)
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FILE *stream;
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{
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return obstack_fgets (stream, &permanent_obstack);
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}
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/* Real tlink code. */
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static void
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freadsym (stream, f, chosen)
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FILE *stream;
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file *f;
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int chosen;
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{
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symbol *sym;
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{
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char *name = tfgets (stream);
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sym = symbol_hash_lookup (name, true);
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}
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if (sym->file == NULL)
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{
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symbol_push (sym);
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sym->file = f;
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sym->chosen = chosen;
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}
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else if (chosen)
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{
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if (sym->chosen && sym->file != f)
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{
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if (sym->chosen == 1)
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file_push (sym->file);
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else
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{
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file_push (f);
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f = sym->file;
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chosen = sym->chosen;
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}
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}
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sym->file = f;
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sym->chosen = chosen;
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}
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}
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static void
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read_repo_file (f)
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file *f;
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{
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char c;
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FILE *stream = fopen (f->root.string, "r");
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if (tlink_verbose >= 2)
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fprintf (stderr, "collect: reading %s\n", f->root.string);
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while (fscanf (stream, "%c ", &c) == 1)
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{
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switch (c)
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{
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case 'A':
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f->args = pfgets (stream);
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break;
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case 'D':
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f->dir = pfgets (stream);
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break;
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case 'M':
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f->main = pfgets (stream);
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break;
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case 'P':
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freadsym (stream, f, 2);
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break;
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case 'C':
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freadsym (stream, f, 1);
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break;
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case 'O':
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freadsym (stream, f, 0);
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break;
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}
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obstack_free (&temporary_obstack, temporary_firstobj);
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}
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fclose (stream);
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if (f->args == NULL)
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f->args = getenv ("COLLECT_GCC_OPTIONS");
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if (f->dir == NULL)
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f->dir = ".";
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}
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static void
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maybe_tweak (line, f)
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char *line;
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file *f;
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{
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symbol *sym = symbol_hash_lookup (line + 2, false);
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if ((sym->file == f && sym->tweaking)
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|| (sym->file != f && line[0] == 'C'))
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{
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sym->tweaking = 0;
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sym->tweaked = 1;
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if (line[0] == 'O')
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line[0] = 'C';
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else
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line[0] = 'O';
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}
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}
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static int
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recompile_files ()
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{
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file *f;
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while ((f = file_pop ()) != NULL)
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{
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char *line, *command;
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FILE *stream = fopen (f->root.string, "r");
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char *outname = frob_extension (f->root.string, ".rnw");
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FILE *output = fopen (outname, "w");
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while ((line = tfgets (stream)) != NULL)
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{
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switch (line[0])
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{
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case 'C':
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case 'O':
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maybe_tweak (line, f);
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}
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fprintf (output, "%s\n", line);
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}
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fclose (stream);
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fclose (output);
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rename (outname, f->root.string);
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obstack_grow (&temporary_obstack, "cd ", 3);
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obstack_grow (&temporary_obstack, f->dir, strlen (f->dir));
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obstack_grow (&temporary_obstack, "; ", 2);
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obstack_grow (&temporary_obstack, c_file_name, strlen (c_file_name));
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obstack_1grow (&temporary_obstack, ' ');
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obstack_grow (&temporary_obstack, f->args, strlen (f->args));
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obstack_1grow (&temporary_obstack, ' ');
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command = obstack_copy0 (&temporary_obstack, f->main, strlen (f->main));
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if (tlink_verbose)
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fprintf (stderr, "collect: recompiling %s\n", f->main);
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if (tlink_verbose >= 3)
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fprintf (stderr, "%s\n", command);
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if (system (command) != 0)
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return 0;
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read_repo_file (f);
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obstack_free (&temporary_obstack, temporary_firstobj);
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}
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return 1;
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}
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static int
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read_repo_files (object_lst)
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char **object_lst;
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{
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char **object = object_lst;
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for (; *object; object++)
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{
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char *p = frob_extension (*object, ".rpo");
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file *f;
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if (! file_exists (p))
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continue;
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f = file_hash_lookup (p);
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read_repo_file (f);
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}
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if (file_stack != NULL && ! recompile_files ())
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return 0;
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return (symbol_stack != NULL);
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}
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static void
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demangle_new_symbols ()
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{
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symbol *sym;
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while ((sym = symbol_pop ()) != NULL)
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{
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demangled *dem;
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char *p = cplus_demangle (sym->root.string, DMGL_PARAMS | DMGL_ANSI);
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if (! p)
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continue;
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dem = demangled_hash_lookup (p, true);
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dem->mangled = sym->root.string;
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}
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}
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static int
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scan_linker_output (fname)
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char *fname;
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{
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FILE *stream = fopen (fname, "r");
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char *line;
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while ((line = tfgets (stream)) != NULL)
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{
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char *p = line, *q;
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symbol *sym;
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int end;
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while (*p && isspace (*p))
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++p;
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if (! *p)
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continue;
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for (q = p; *q && ! isspace (*q); ++q)
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;
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/* Try the first word on the line. */
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if (*p == '.')
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++p;
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if (*p == '_' && prepends_underscore)
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++p;
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end = ! *q;
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*q = 0;
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sym = symbol_hash_lookup (p, false);
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if (! sym && ! end)
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/* Try a mangled name in `quotes'. */
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{
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demangled *dem = 0;
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p = (char *) index (q+1, '`');
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q = 0;
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#define MUL "multiple definition of "
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#define UND "undefined reference to "
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if (p && (p - line > sizeof (MUL)))
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{
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char *beg = p - sizeof (MUL) + 1;
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*p = 0;
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if (!strcmp (beg, MUL) || !strcmp (beg, UND))
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p++, q = (char *) index (p, '\'');
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}
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if (q)
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*q = 0, dem = demangled_hash_lookup (p, false);
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if (dem)
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sym = symbol_hash_lookup (dem->mangled, false);
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}
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if (sym && sym->tweaked)
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return 0;
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if (sym && !sym->tweaking)
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{
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if (tlink_verbose >= 2)
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fprintf (stderr, "collect: tweaking %s in %s\n",
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sym->root.string, sym->file->root.string);
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sym->tweaking = 1;
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file_push (sym->file);
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}
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obstack_free (&temporary_obstack, temporary_firstobj);
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}
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return (file_stack != NULL);
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}
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void
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do_tlink (ld_argv, object_lst)
|
||
char **ld_argv, **object_lst;
|
||
{
|
||
int exit = tlink_execute ("ld", ld_argv, ldout);
|
||
|
||
tlink_init ();
|
||
|
||
if (exit)
|
||
{
|
||
int i = 0;
|
||
|
||
/* Until collect does a better job of figuring out which are object
|
||
files, assume that everything on the command line could be. */
|
||
if (read_repo_files (ld_argv))
|
||
while (exit && i++ < MAX_ITERATIONS)
|
||
{
|
||
if (tlink_verbose >= 3)
|
||
dump_file (ldout);
|
||
demangle_new_symbols ();
|
||
if (! scan_linker_output (ldout))
|
||
break;
|
||
if (! recompile_files ())
|
||
break;
|
||
if (tlink_verbose)
|
||
fprintf (stderr, "collect: relinking\n");
|
||
exit = tlink_execute ("ld", ld_argv, ldout);
|
||
}
|
||
}
|
||
|
||
dump_file (ldout);
|
||
unlink (ldout);
|
||
if (exit)
|
||
{
|
||
error ("ld returned %d exit status", exit);
|
||
collect_exit (exit);
|
||
}
|
||
}
|