diff options
Diffstat (limited to 'gdb/symtab.c')
| -rw-r--r-- | gdb/symtab.c | 3788 |
1 files changed, 0 insertions, 3788 deletions
diff --git a/gdb/symtab.c b/gdb/symtab.c deleted file mode 100644 index 18bea05e392..00000000000 --- a/gdb/symtab.c +++ /dev/null @@ -1,3788 +0,0 @@ -/* Symbol table lookup for the GNU debugger, GDB. - - Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, - 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software - Foundation, Inc. - - This file is part of GDB. - - 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 2 of the License, 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "symtab.h" -#include "gdbtypes.h" -#include "gdbcore.h" -#include "frame.h" -#include "target.h" -#include "value.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdbcmd.h" -#include "call-cmds.h" -#include "gdb_regex.h" -#include "expression.h" -#include "language.h" -#include "demangle.h" -#include "inferior.h" -#include "linespec.h" -#include "filenames.h" /* for FILENAME_CMP */ - -#include "obstack.h" - -#include <sys/types.h> -#include <fcntl.h> -#include "gdb_string.h" -#include "gdb_stat.h" -#include <ctype.h> -#include "cp-abi.h" - -/* Prototype for one function in parser-defs.h, - instead of including that entire file. */ - -extern char *find_template_name_end (char *); - -/* Prototypes for local functions */ - -static void completion_list_add_name (char *, char *, int, char *, char *); - -static void rbreak_command (char *, int); - -static void types_info (char *, int); - -static void functions_info (char *, int); - -static void variables_info (char *, int); - -static void sources_info (char *, int); - -static void output_source_filename (char *, int *); - -static int find_line_common (struct linetable *, int, int *); - -/* This one is used by linespec.c */ - -char *operator_chars (char *p, char **end); - -static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *, - const char *, int, - namespace_enum); - -static struct symbol *lookup_symbol_aux (const char *name, const - struct block *block, const - namespace_enum namespace, int - *is_a_field_of_this, struct - symtab **symtab); - - -static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr); - -/* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */ -/* Signals the presence of objects compiled by HP compilers */ -int hp_som_som_object_present = 0; - -static void fixup_section (struct general_symbol_info *, struct objfile *); - -static int file_matches (char *, char **, int); - -static void print_symbol_info (namespace_enum, - struct symtab *, struct symbol *, int, char *); - -static void print_msymbol_info (struct minimal_symbol *); - -static void symtab_symbol_info (char *, namespace_enum, int); - -static void overload_list_add_symbol (struct symbol *sym, char *oload_name); - -void _initialize_symtab (void); - -/* */ - -/* The single non-language-specific builtin type */ -struct type *builtin_type_error; - -/* Block in which the most recently searched-for symbol was found. - Might be better to make this a parameter to lookup_symbol and - value_of_this. */ - -const struct block *block_found; - -/* While the C++ support is still in flux, issue a possibly helpful hint on - using the new command completion feature on single quoted demangled C++ - symbols. Remove when loose ends are cleaned up. FIXME -fnf */ - -static void -cplusplus_hint (char *name) -{ - while (*name == '\'') - name++; - printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name); - printf_filtered ("(Note leading single quote.)\n"); -} - -/* Check for a symtab of a specific name; first in symtabs, then in - psymtabs. *If* there is no '/' in the name, a match after a '/' - in the symtab filename will also work. */ - -struct symtab * -lookup_symtab (const char *name) -{ - register struct symtab *s; - register struct partial_symtab *ps; - register struct objfile *objfile; - char *real_path = NULL; - - /* Here we are interested in canonicalizing an absolute path, not - absolutizing a relative path. */ - if (IS_ABSOLUTE_PATH (name)) - real_path = gdb_realpath (name); - -got_symtab: - - /* First, search for an exact match */ - - ALL_SYMTABS (objfile, s) - { - if (FILENAME_CMP (name, s->filename) == 0) - { - xfree (real_path); - return s; - } - /* If the user gave us an absolute path, try to find the file in - this symtab and use its absolute path. */ - if (real_path != NULL) - { - char *rp = symtab_to_filename (s); - if (FILENAME_CMP (real_path, rp) == 0) - { - xfree (real_path); - return s; - } - } - } - - xfree (real_path); - - /* Now, search for a matching tail (only if name doesn't have any dirs) */ - - if (lbasename (name) == name) - ALL_SYMTABS (objfile, s) - { - if (FILENAME_CMP (lbasename (s->filename), name) == 0) - return s; - } - - /* Same search rules as above apply here, but now we look thru the - psymtabs. */ - - ps = lookup_partial_symtab (name); - if (!ps) - return (NULL); - - if (ps->readin) - error ("Internal: readin %s pst for `%s' found when no symtab found.", - ps->filename, name); - - s = PSYMTAB_TO_SYMTAB (ps); - - if (s) - return s; - - /* At this point, we have located the psymtab for this file, but - the conversion to a symtab has failed. This usually happens - when we are looking up an include file. In this case, - PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has - been created. So, we need to run through the symtabs again in - order to find the file. - XXX - This is a crock, and should be fixed inside of the the - symbol parsing routines. */ - goto got_symtab; -} - -/* Lookup the partial symbol table of a source file named NAME. - *If* there is no '/' in the name, a match after a '/' - in the psymtab filename will also work. */ - -struct partial_symtab * -lookup_partial_symtab (const char *name) -{ - register struct partial_symtab *pst; - register struct objfile *objfile; - char *real_path = NULL; - - /* Here we are interested in canonicalizing an absolute path, not - absolutizing a relative path. */ - if (IS_ABSOLUTE_PATH (name)) - real_path = gdb_realpath (name); - - ALL_PSYMTABS (objfile, pst) - { - if (FILENAME_CMP (name, pst->filename) == 0) - { - xfree (real_path); - return (pst); - } - /* If the user gave us an absolute path, try to find the file in - this symtab and use its absolute path. */ - if (real_path != NULL) - { - if (pst->fullname == NULL) - source_full_path_of (pst->filename, &pst->fullname); - if (pst->fullname != NULL - && FILENAME_CMP (real_path, pst->fullname) == 0) - { - xfree (real_path); - return pst; - } - } - } - - xfree (real_path); - - /* Now, search for a matching tail (only if name doesn't have any dirs) */ - - if (lbasename (name) == name) - ALL_PSYMTABS (objfile, pst) - { - if (FILENAME_CMP (lbasename (pst->filename), name) == 0) - return (pst); - } - - return (NULL); -} - -/* Mangle a GDB method stub type. This actually reassembles the pieces of the - full method name, which consist of the class name (from T), the unadorned - method name from METHOD_ID, and the signature for the specific overload, - specified by SIGNATURE_ID. Note that this function is g++ specific. */ - -char * -gdb_mangle_name (struct type *type, int method_id, int signature_id) -{ - int mangled_name_len; - char *mangled_name; - struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); - struct fn_field *method = &f[signature_id]; - char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); - char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); - char *newname = type_name_no_tag (type); - - /* Does the form of physname indicate that it is the full mangled name - of a constructor (not just the args)? */ - int is_full_physname_constructor; - - int is_constructor; - int is_destructor = is_destructor_name (physname); - /* Need a new type prefix. */ - char *const_prefix = method->is_const ? "C" : ""; - char *volatile_prefix = method->is_volatile ? "V" : ""; - char buf[20]; - int len = (newname == NULL ? 0 : strlen (newname)); - - if (is_operator_name (field_name)) - return xstrdup (physname); - - is_full_physname_constructor = is_constructor_name (physname); - - is_constructor = - is_full_physname_constructor || (newname && STREQ (field_name, newname)); - - if (!is_destructor) - is_destructor = (strncmp (physname, "__dt", 4) == 0); - - if (is_destructor || is_full_physname_constructor) - { - mangled_name = (char *) xmalloc (strlen (physname) + 1); - strcpy (mangled_name, physname); - return mangled_name; - } - - if (len == 0) - { - sprintf (buf, "__%s%s", const_prefix, volatile_prefix); - } - else if (physname[0] == 't' || physname[0] == 'Q') - { - /* The physname for template and qualified methods already includes - the class name. */ - sprintf (buf, "__%s%s", const_prefix, volatile_prefix); - newname = NULL; - len = 0; - } - else - { - sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); - } - mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) - + strlen (buf) + len + strlen (physname) + 1); - - { - mangled_name = (char *) xmalloc (mangled_name_len); - if (is_constructor) - mangled_name[0] = '\0'; - else - strcpy (mangled_name, field_name); - } - strcat (mangled_name, buf); - /* If the class doesn't have a name, i.e. newname NULL, then we just - mangle it using 0 for the length of the class. Thus it gets mangled - as something starting with `::' rather than `classname::'. */ - if (newname != NULL) - strcat (mangled_name, newname); - - strcat (mangled_name, physname); - return (mangled_name); -} - - - -/* Find which partial symtab on contains PC and SECTION. Return 0 if none. */ - -struct partial_symtab * -find_pc_sect_psymtab (CORE_ADDR pc, asection *section) -{ - register struct partial_symtab *pst; - register struct objfile *objfile; - struct minimal_symbol *msymbol; - - /* If we know that this is not a text address, return failure. This is - necessary because we loop based on texthigh and textlow, which do - not include the data ranges. */ - msymbol = lookup_minimal_symbol_by_pc_section (pc, section); - if (msymbol - && (msymbol->type == mst_data - || msymbol->type == mst_bss - || msymbol->type == mst_abs - || msymbol->type == mst_file_data - || msymbol->type == mst_file_bss)) - return NULL; - - ALL_PSYMTABS (objfile, pst) - { - if (pc >= pst->textlow && pc < pst->texthigh) - { - struct partial_symtab *tpst; - - /* An objfile that has its functions reordered might have - many partial symbol tables containing the PC, but - we want the partial symbol table that contains the - function containing the PC. */ - if (!(objfile->flags & OBJF_REORDERED) && - section == 0) /* can't validate section this way */ - return (pst); - - if (msymbol == NULL) - return (pst); - - for (tpst = pst; tpst != NULL; tpst = tpst->next) - { - if (pc >= tpst->textlow && pc < tpst->texthigh) - { - struct partial_symbol *p; - - p = find_pc_sect_psymbol (tpst, pc, section); - if (p != NULL - && SYMBOL_VALUE_ADDRESS (p) - == SYMBOL_VALUE_ADDRESS (msymbol)) - return (tpst); - } - } - return (pst); - } - } - return (NULL); -} - -/* Find which partial symtab contains PC. Return 0 if none. - Backward compatibility, no section */ - -struct partial_symtab * -find_pc_psymtab (CORE_ADDR pc) -{ - return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc)); -} - -/* Find which partial symbol within a psymtab matches PC and SECTION. - Return 0 if none. Check all psymtabs if PSYMTAB is 0. */ - -struct partial_symbol * -find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, - asection *section) -{ - struct partial_symbol *best = NULL, *p, **pp; - CORE_ADDR best_pc; - - if (!psymtab) - psymtab = find_pc_sect_psymtab (pc, section); - if (!psymtab) - return 0; - - /* Cope with programs that start at address 0 */ - best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; - - /* Search the global symbols as well as the static symbols, so that - find_pc_partial_function doesn't use a minimal symbol and thus - cache a bad endaddr. */ - for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; - (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) - < psymtab->n_global_syms); - pp++) - { - p = *pp; - if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE - && SYMBOL_CLASS (p) == LOC_BLOCK - && pc >= SYMBOL_VALUE_ADDRESS (p) - && (SYMBOL_VALUE_ADDRESS (p) > best_pc - || (psymtab->textlow == 0 - && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) - { - if (section) /* match on a specific section */ - { - fixup_psymbol_section (p, psymtab->objfile); - if (SYMBOL_BFD_SECTION (p) != section) - continue; - } - best_pc = SYMBOL_VALUE_ADDRESS (p); - best = p; - } - } - - for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; - (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) - < psymtab->n_static_syms); - pp++) - { - p = *pp; - if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE - && SYMBOL_CLASS (p) == LOC_BLOCK - && pc >= SYMBOL_VALUE_ADDRESS (p) - && (SYMBOL_VALUE_ADDRESS (p) > best_pc - || (psymtab->textlow == 0 - && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) - { - if (section) /* match on a specific section */ - { - fixup_psymbol_section (p, psymtab->objfile); - if (SYMBOL_BFD_SECTION (p) != section) - continue; - } - best_pc = SYMBOL_VALUE_ADDRESS (p); - best = p; - } - } - - return best; -} - -/* Find which partial symbol within a psymtab matches PC. Return 0 if none. - Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */ - -struct partial_symbol * -find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc) -{ - return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc)); -} - -/* Debug symbols usually don't have section information. We need to dig that - out of the minimal symbols and stash that in the debug symbol. */ - -static void -fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile) -{ - struct minimal_symbol *msym; - msym = lookup_minimal_symbol (ginfo->name, NULL, objfile); - - if (msym) - { - ginfo->bfd_section = SYMBOL_BFD_SECTION (msym); - ginfo->section = SYMBOL_SECTION (msym); - } -} - -struct symbol * -fixup_symbol_section (struct symbol *sym, struct objfile *objfile) -{ - if (!sym) - return NULL; - - if (SYMBOL_BFD_SECTION (sym)) - return sym; - - fixup_section (&sym->ginfo, objfile); - - return sym; -} - -struct partial_symbol * -fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) -{ - if (!psym) - return NULL; - - if (SYMBOL_BFD_SECTION (psym)) - return psym; - - fixup_section (&psym->ginfo, objfile); - - return psym; -} - -/* Find the definition for a specified symbol name NAME - in namespace NAMESPACE, visible from lexical block BLOCK. - Returns the struct symbol pointer, or zero if no symbol is found. - If SYMTAB is non-NULL, store the symbol table in which the - symbol was found there, or NULL if not found. - C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if - NAME is a field of the current implied argument `this'. If so set - *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. - BLOCK_FOUND is set to the block in which NAME is found (in the case of - a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ - -/* This function has a bunch of loops in it and it would seem to be - attractive to put in some QUIT's (though I'm not really sure - whether it can run long enough to be really important). But there - are a few calls for which it would appear to be bad news to quit - out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and - nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++ - code below which can error(), but that probably doesn't affect - these calls since they are looking for a known variable and thus - can probably assume it will never hit the C++ code). */ - -struct symbol * -lookup_symbol (const char *name, const struct block *block, - const namespace_enum namespace, int *is_a_field_of_this, - struct symtab **symtab) -{ - char *modified_name = NULL; - char *modified_name2 = NULL; - int needtofreename = 0; - struct symbol *returnval; - - if (case_sensitivity == case_sensitive_off) - { - char *copy; - int len, i; - - len = strlen (name); - copy = (char *) alloca (len + 1); - for (i= 0; i < len; i++) - copy[i] = tolower (name[i]); - copy[len] = 0; - modified_name = copy; - } - else - modified_name = (char *) name; - - /* If we are using C++ language, demangle the name before doing a lookup, so - we can always binary search. */ - if (current_language->la_language == language_cplus) - { - modified_name2 = cplus_demangle (modified_name, DMGL_ANSI | DMGL_PARAMS); - if (modified_name2) - { - modified_name = modified_name2; - needtofreename = 1; - } - } - - returnval = lookup_symbol_aux (modified_name, block, namespace, - is_a_field_of_this, symtab); - if (needtofreename) - xfree (modified_name2); - - return returnval; -} - -static struct symbol * -lookup_symbol_aux (const char *name, const struct block *block, - const namespace_enum namespace, int *is_a_field_of_this, - struct symtab **symtab) -{ - register struct symbol *sym; - register struct symtab *s = NULL; - register struct partial_symtab *ps; - register struct blockvector *bv; - register struct objfile *objfile = NULL; - register struct block *b; - register struct minimal_symbol *msymbol; - - - /* Search specified block and its superiors. */ - - while (block != 0) - { - sym = lookup_block_symbol (block, name, namespace); - if (sym) - { - block_found = block; - if (symtab != NULL) - { - /* Search the list of symtabs for one which contains the - address of the start of this block. */ - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - if (BLOCK_START (b) <= BLOCK_START (block) - && BLOCK_END (b) > BLOCK_START (block)) - goto found; - } - found: - *symtab = s; - } - - return fixup_symbol_section (sym, objfile); - } - block = BLOCK_SUPERBLOCK (block); - } - - /* FIXME: this code is never executed--block is always NULL at this - point. What is it trying to do, anyway? We already should have - checked the STATIC_BLOCK above (it is the superblock of top-level - blocks). Why is VAR_NAMESPACE special-cased? */ - /* Don't need to mess with the psymtabs; if we have a block, - that file is read in. If we don't, then we deal later with - all the psymtab stuff that needs checking. */ - /* Note (RT): The following never-executed code looks unnecessary to me also. - * If we change the code to use the original (passed-in) - * value of 'block', we could cause it to execute, but then what - * would it do? The STATIC_BLOCK of the symtab containing the passed-in - * 'block' was already searched by the above code. And the STATIC_BLOCK's - * of *other* symtabs (those files not containing 'block' lexically) - * should not contain 'block' address-wise. So we wouldn't expect this - * code to find any 'sym''s that were not found above. I vote for - * deleting the following paragraph of code. - */ - if (namespace == VAR_NAMESPACE && block != NULL) - { - struct block *b; - /* Find the right symtab. */ - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - if (BLOCK_START (b) <= BLOCK_START (block) - && BLOCK_END (b) > BLOCK_START (block)) - { - sym = lookup_block_symbol (b, name, VAR_NAMESPACE); - if (sym) - { - block_found = b; - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - } - } - } - - - /* C++: If requested to do so by the caller, - check to see if NAME is a field of `this'. */ - if (is_a_field_of_this) - { - struct value *v = value_of_this (0); - - *is_a_field_of_this = 0; - if (v && check_field (v, name)) - { - *is_a_field_of_this = 1; - if (symtab != NULL) - *symtab = NULL; - return NULL; - } - } - - /* Now search all global blocks. Do the symtab's first, then - check the psymtab's. If a psymtab indicates the existence - of the desired name as a global, then do psymtab-to-symtab - conversion on the fly and return the found symbol. */ - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (sym) - { - block_found = block; - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - } - -#ifndef HPUXHPPA - - /* Check for the possibility of the symbol being a function or - a mangled variable that is stored in one of the minimal symbol tables. - Eventually, all global symbols might be resolved in this way. */ - - if (namespace == VAR_NAMESPACE) - { - msymbol = lookup_minimal_symbol (name, NULL, NULL); - if (msymbol != NULL) - { - s = find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol), - SYMBOL_BFD_SECTION (msymbol)); - if (s != NULL) - { - /* This is a function which has a symtab for its address. */ - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), - namespace); - /* We kept static functions in minimal symbol table as well as - in static scope. We want to find them in the symbol table. */ - if (!sym) - { - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), - namespace); - } - - /* sym == 0 if symbol was found in the minimal symbol table - but not in the symtab. - Return 0 to use the msymbol definition of "foo_". - - This happens for Fortran "foo_" symbols, - which are "foo" in the symtab. - - This can also happen if "asm" is used to make a - regular symbol but not a debugging symbol, e.g. - asm(".globl _main"); - asm("_main:"); - */ - - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - else if (MSYMBOL_TYPE (msymbol) != mst_text - && MSYMBOL_TYPE (msymbol) != mst_file_text - && !STREQ (name, SYMBOL_NAME (msymbol))) - { - /* This is a mangled variable, look it up by its - mangled name. */ - return lookup_symbol_aux (SYMBOL_NAME (msymbol), block, - namespace, is_a_field_of_this, symtab); - } - /* There are no debug symbols for this file, or we are looking - for an unmangled variable. - Try to find a matching static symbol below. */ - } - } - -#endif - - ALL_PSYMTABS (objfile, ps) - { - if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace)) - { - s = PSYMTAB_TO_SYMTAB (ps); - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (!sym) - { - /* This shouldn't be necessary, but as a last resort - * try looking in the statics even though the psymtab - * claimed the symbol was global. It's possible that - * the psymtab gets it wrong in some cases. - */ - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (!sym) - error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ -%s may be an inlined function, or may be a template function\n\ -(if a template, try specifying an instantiation: %s<type>).", - name, ps->filename, name, name); - } - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - } - - /* Now search all static file-level symbols. - Not strictly correct, but more useful than an error. - Do the symtabs first, then check the psymtabs. - If a psymtab indicates the existence - of the desired name as a file-level static, then do psymtab-to-symtab - conversion on the fly and return the found symbol. */ - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (sym) - { - block_found = block; - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - } - - ALL_PSYMTABS (objfile, ps) - { - if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace)) - { - s = PSYMTAB_TO_SYMTAB (ps); - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (!sym) - { - /* This shouldn't be necessary, but as a last resort - * try looking in the globals even though the psymtab - * claimed the symbol was static. It's possible that - * the psymtab gets it wrong in some cases. - */ - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, namespace); - if (!sym) - error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ -%s may be an inlined function, or may be a template function\n\ -(if a template, try specifying an instantiation: %s<type>).", - name, ps->filename, name, name); - } - if (symtab != NULL) - *symtab = s; - return fixup_symbol_section (sym, objfile); - } - } - -#ifdef HPUXHPPA - - /* Check for the possibility of the symbol being a function or - a global variable that is stored in one of the minimal symbol tables. - The "minimal symbol table" is built from linker-supplied info. - - RT: I moved this check to last, after the complete search of - the global (p)symtab's and static (p)symtab's. For HP-generated - symbol tables, this check was causing a premature exit from - lookup_symbol with NULL return, and thus messing up symbol lookups - of things like "c::f". It seems to me a check of the minimal - symbol table ought to be a last resort in any case. I'm vaguely - worried about the comment below which talks about FORTRAN routines "foo_" - though... is it saying we need to do the "minsym" check before - the static check in this case? - */ - - if (namespace == VAR_NAMESPACE) - { - msymbol = lookup_minimal_symbol (name, NULL, NULL); - if (msymbol != NULL) - { - /* OK, we found a minimal symbol in spite of not - * finding any symbol. There are various possible - * explanations for this. One possibility is the symbol - * exists in code not compiled -g. Another possibility - * is that the 'psymtab' isn't doing its job. - * A third possibility, related to #2, is that we were confused - * by name-mangling. For instance, maybe the psymtab isn't - * doing its job because it only know about demangled - * names, but we were given a mangled name... - */ - - /* We first use the address in the msymbol to try to - * locate the appropriate symtab. Note that find_pc_symtab() - * has a side-effect of doing psymtab-to-symtab expansion, - * for the found symtab. - */ - s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); - if (s != NULL) - { - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), - namespace); - /* We kept static functions in minimal symbol table as well as - in static scope. We want to find them in the symbol table. */ - if (!sym) - { - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol), - namespace); - } - /* If we found one, return it */ - if (sym) - { - if (symtab != NULL) - *symtab = s; - return sym; - } - - /* If we get here with sym == 0, the symbol was - found in the minimal symbol table - but not in the symtab. - Fall through and return 0 to use the msymbol - definition of "foo_". - (Note that outer code generally follows up a call - to this routine with a call to lookup_minimal_symbol(), - so a 0 return means we'll just flow into that other routine). - - This happens for Fortran "foo_" symbols, - which are "foo" in the symtab. - - This can also happen if "asm" is used to make a - regular symbol but not a debugging symbol, e.g. - asm(".globl _main"); - asm("_main:"); - */ - } - - /* If the lookup-by-address fails, try repeating the - * entire lookup process with the symbol name from - * the msymbol (if different from the original symbol name). - */ - else if (MSYMBOL_TYPE (msymbol) != mst_text - && MSYMBOL_TYPE (msymbol) != mst_file_text - && !STREQ (name, SYMBOL_NAME (msymbol))) - { - return lookup_symbol_aux (SYMBOL_NAME (msymbol), block, - namespace, is_a_field_of_this, symtab); - } - } - } - -#endif - - if (symtab != NULL) - *symtab = NULL; - return 0; -} - -/* Look, in partial_symtab PST, for symbol NAME. Check the global - symbols if GLOBAL, the static symbols if not */ - -static struct partial_symbol * -lookup_partial_symbol (struct partial_symtab *pst, const char *name, int global, - namespace_enum namespace) -{ - struct partial_symbol *temp; - struct partial_symbol **start, **psym; - struct partial_symbol **top, **bottom, **center; - int length = (global ? pst->n_global_syms : pst->n_static_syms); - int do_linear_search = 1; - - if (length == 0) - { - return (NULL); - } - start = (global ? - pst->objfile->global_psymbols.list + pst->globals_offset : - pst->objfile->static_psymbols.list + pst->statics_offset); - - if (global) /* This means we can use a binary search. */ - { - do_linear_search = 0; - - /* Binary search. This search is guaranteed to end with center - pointing at the earliest partial symbol with the correct - name. At that point *all* partial symbols with that name - will be checked against the correct namespace. */ - - bottom = start; - top = start + length - 1; - while (top > bottom) - { - center = bottom + (top - bottom) / 2; - if (!(center < top)) - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - if (!do_linear_search - && (SYMBOL_LANGUAGE (*center) == language_java)) - { - do_linear_search = 1; - } - if (strcmp (SYMBOL_SOURCE_NAME (*center), name) >= 0) - { - top = center; - } - else - { - bottom = center + 1; - } - } - if (!(top == bottom)) - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - - /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so - we don't have to force a linear search on C++. Probably holds true - for JAVA as well, no way to check.*/ - while (SYMBOL_MATCHES_NAME (*top,name)) - { - if (SYMBOL_NAMESPACE (*top) == namespace) - { - return (*top); - } - top++; - } - } - - /* Can't use a binary search or else we found during the binary search that - we should also do a linear search. */ - - if (do_linear_search) - { - for (psym = start; psym < start + length; psym++) - { - if (namespace == SYMBOL_NAMESPACE (*psym)) - { - if (SYMBOL_MATCHES_NAME (*psym, name)) - { - return (*psym); - } - } - } - } - - return (NULL); -} - -/* Look up a type named NAME in the struct_namespace. The type returned - must not be opaque -- i.e., must have at least one field defined - - This code was modelled on lookup_symbol -- the parts not relevant to looking - up types were just left out. In particular it's assumed here that types - are available in struct_namespace and only at file-static or global blocks. */ - - -struct type * -lookup_transparent_type (const char *name) -{ - register struct symbol *sym; - register struct symtab *s = NULL; - register struct partial_symtab *ps; - struct blockvector *bv; - register struct objfile *objfile; - register struct block *block; - - /* Now search all the global symbols. Do the symtab's first, then - check the psymtab's. If a psymtab indicates the existence - of the desired name as a global, then do psymtab-to-symtab - conversion on the fly and return the found symbol. */ - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) - { - return SYMBOL_TYPE (sym); - } - } - - ALL_PSYMTABS (objfile, ps) - { - if (!ps->readin && lookup_partial_symbol (ps, name, 1, STRUCT_NAMESPACE)) - { - s = PSYMTAB_TO_SYMTAB (ps); - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (!sym) - { - /* This shouldn't be necessary, but as a last resort - * try looking in the statics even though the psymtab - * claimed the symbol was global. It's possible that - * the psymtab gets it wrong in some cases. - */ - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (!sym) - error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ -%s may be an inlined function, or may be a template function\n\ -(if a template, try specifying an instantiation: %s<type>).", - name, ps->filename, name, name); - } - if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) - return SYMBOL_TYPE (sym); - } - } - - /* Now search the static file-level symbols. - Not strictly correct, but more useful than an error. - Do the symtab's first, then - check the psymtab's. If a psymtab indicates the existence - of the desired name as a file-level static, then do psymtab-to-symtab - conversion on the fly and return the found symbol. - */ - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) - { - return SYMBOL_TYPE (sym); - } - } - - ALL_PSYMTABS (objfile, ps) - { - if (!ps->readin && lookup_partial_symbol (ps, name, 0, STRUCT_NAMESPACE)) - { - s = PSYMTAB_TO_SYMTAB (ps); - bv = BLOCKVECTOR (s); - block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (!sym) - { - /* This shouldn't be necessary, but as a last resort - * try looking in the globals even though the psymtab - * claimed the symbol was static. It's possible that - * the psymtab gets it wrong in some cases. - */ - block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - sym = lookup_block_symbol (block, name, STRUCT_NAMESPACE); - if (!sym) - error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ -%s may be an inlined function, or may be a template function\n\ -(if a template, try specifying an instantiation: %s<type>).", - name, ps->filename, name, name); - } - if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) - return SYMBOL_TYPE (sym); - } - } - return (struct type *) 0; -} - - -/* Find the psymtab containing main(). */ -/* FIXME: What about languages without main() or specially linked - executables that have no main() ? */ - -struct partial_symtab * -find_main_psymtab (void) -{ - register struct partial_symtab *pst; - register struct objfile *objfile; - - ALL_PSYMTABS (objfile, pst) - { - if (lookup_partial_symbol (pst, main_name (), 1, VAR_NAMESPACE)) - { - return (pst); - } - } - return (NULL); -} - -/* Search BLOCK for symbol NAME in NAMESPACE. - - Note that if NAME is the demangled form of a C++ symbol, we will fail - to find a match during the binary search of the non-encoded names, but - for now we don't worry about the slight inefficiency of looking for - a match we'll never find, since it will go pretty quick. Once the - binary search terminates, we drop through and do a straight linear - search on the symbols. Each symbol which is marked as being a C++ - symbol (language_cplus set) has both the encoded and non-encoded names - tested for a match. */ - -struct symbol * -lookup_block_symbol (register const struct block *block, const char *name, - const namespace_enum namespace) -{ - register int bot, top, inc; - register struct symbol *sym; - register struct symbol *sym_found = NULL; - register int do_linear_search = 1; - - /* If the blocks's symbols were sorted, start with a binary search. */ - - if (BLOCK_SHOULD_SORT (block)) - { - /* Reset the linear search flag so if the binary search fails, we - won't do the linear search once unless we find some reason to - do so */ - - do_linear_search = 0; - top = BLOCK_NSYMS (block); - bot = 0; - - /* Advance BOT to not far before the first symbol whose name is NAME. */ - - while (1) - { - inc = (top - bot + 1); - /* No need to keep binary searching for the last few bits worth. */ - if (inc < 4) - { - break; - } - inc = (inc >> 1) + bot; - sym = BLOCK_SYM (block, inc); - if (!do_linear_search && (SYMBOL_LANGUAGE (sym) == language_java)) - { - do_linear_search = 1; - } - if (SYMBOL_SOURCE_NAME (sym)[0] < name[0]) - { - bot = inc; - } - else if (SYMBOL_SOURCE_NAME (sym)[0] > name[0]) - { - top = inc; - } - else if (strcmp (SYMBOL_SOURCE_NAME (sym), name) < 0) - { - bot = inc; - } - else - { - top = inc; - } - } - - /* Now scan forward until we run out of symbols, find one whose - name is greater than NAME, or find one we want. If there is - more than one symbol with the right name and namespace, we - return the first one; I believe it is now impossible for us - to encounter two symbols with the same name and namespace - here, because blocks containing argument symbols are no - longer sorted. */ - - top = BLOCK_NSYMS (block); - while (bot < top) - { - sym = BLOCK_SYM (block, bot); - if (SYMBOL_NAMESPACE (sym) == namespace && - SYMBOL_MATCHES_NAME (sym, name)) - { - return sym; - } - if (SYMBOL_SOURCE_NAME (sym)[0] > name[0]) - { - break; - } - bot++; - } - } - - /* Here if block isn't sorted, or we fail to find a match during the - binary search above. If during the binary search above, we find a - symbol which is a Java symbol, then we have re-enabled the linear - search flag which was reset when starting the binary search. - - This loop is equivalent to the loop above, but hacked greatly for speed. - - Note that parameter symbols do not always show up last in the - list; this loop makes sure to take anything else other than - parameter symbols first; it only uses parameter symbols as a - last resort. Note that this only takes up extra computation - time on a match. */ - - if (do_linear_search) - { - top = BLOCK_NSYMS (block); - bot = 0; - while (bot < top) - { - sym = BLOCK_SYM (block, bot); - if (SYMBOL_NAMESPACE (sym) == namespace && - SYMBOL_MATCHES_NAME (sym, name)) - { - /* If SYM has aliases, then use any alias that is active - at the current PC. If no alias is active at the current - PC, then use the main symbol. - - ?!? Is checking the current pc correct? Is this routine - ever called to look up a symbol from another context? - - FIXME: No, it's not correct. If someone sets a - conditional breakpoint at an address, then the - breakpoint's `struct expression' should refer to the - `struct symbol' appropriate for the breakpoint's - address, which may not be the PC. - - Even if it were never called from another context, - it's totally bizarre for lookup_symbol's behavior to - depend on the value of the inferior's current PC. We - should pass in the appropriate PC as well as the - block. The interface to lookup_symbol should change - to require the caller to provide a PC. */ - - if (SYMBOL_ALIASES (sym)) - sym = find_active_alias (sym, read_pc ()); - - sym_found = sym; - if (SYMBOL_CLASS (sym) != LOC_ARG && - SYMBOL_CLASS (sym) != LOC_LOCAL_ARG && - SYMBOL_CLASS (sym) != LOC_REF_ARG && - SYMBOL_CLASS (sym) != LOC_REGPARM && - SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR && - SYMBOL_CLASS (sym) != LOC_BASEREG_ARG) - { - break; - } - } - bot++; - } - } - return (sym_found); /* Will be NULL if not found. */ -} - -/* Given a main symbol SYM and ADDR, search through the alias - list to determine if an alias is active at ADDR and return - the active alias. - - If no alias is active, then return SYM. */ - -static struct symbol * -find_active_alias (struct symbol *sym, CORE_ADDR addr) -{ - struct range_list *r; - struct alias_list *aliases; - - /* If we have aliases, check them first. */ - aliases = SYMBOL_ALIASES (sym); - - while (aliases) - { - if (!SYMBOL_RANGES (aliases->sym)) - return aliases->sym; - for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next) - { - if (r->start <= addr && r->end > addr) - return aliases->sym; - } - aliases = aliases->next; - } - - /* Nothing found, return the main symbol. */ - return sym; -} - - -/* Return the symbol for the function which contains a specified - lexical block, described by a struct block BL. */ - -struct symbol * -block_function (struct block *bl) -{ - while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0) - bl = BLOCK_SUPERBLOCK (bl); - - return BLOCK_FUNCTION (bl); -} - -/* Find the symtab associated with PC and SECTION. Look through the - psymtabs and read in another symtab if necessary. */ - -struct symtab * -find_pc_sect_symtab (CORE_ADDR pc, asection *section) -{ - register struct block *b; - struct blockvector *bv; - register struct symtab *s = NULL; - register struct symtab *best_s = NULL; - register struct partial_symtab *ps; - register struct objfile *objfile; - CORE_ADDR distance = 0; - struct minimal_symbol *msymbol; - - /* If we know that this is not a text address, return failure. This is - necessary because we loop based on the block's high and low code - addresses, which do not include the data ranges, and because - we call find_pc_sect_psymtab which has a similar restriction based - on the partial_symtab's texthigh and textlow. */ - msymbol = lookup_minimal_symbol_by_pc_section (pc, section); - if (msymbol - && (msymbol->type == mst_data - || msymbol->type == mst_bss - || msymbol->type == mst_abs - || msymbol->type == mst_file_data - || msymbol->type == mst_file_bss)) - return NULL; - - /* Search all symtabs for the one whose file contains our address, and which - is the smallest of all the ones containing the address. This is designed - to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 - and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from - 0x1000-0x4000, but for address 0x2345 we want to return symtab b. - - This happens for native ecoff format, where code from included files - gets its own symtab. The symtab for the included file should have - been read in already via the dependency mechanism. - It might be swifter to create several symtabs with the same name - like xcoff does (I'm not sure). - - It also happens for objfiles that have their functions reordered. - For these, the symtab we are looking for is not necessarily read in. */ - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - - if (BLOCK_START (b) <= pc - && BLOCK_END (b) > pc - && (distance == 0 - || BLOCK_END (b) - BLOCK_START (b) < distance)) - { - /* For an objfile that has its functions reordered, - find_pc_psymtab will find the proper partial symbol table - and we simply return its corresponding symtab. */ - /* In order to better support objfiles that contain both - stabs and coff debugging info, we continue on if a psymtab - can't be found. */ - if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) - { - ps = find_pc_sect_psymtab (pc, section); - if (ps) - return PSYMTAB_TO_SYMTAB (ps); - } - if (section != 0) - { - int i; - - for (i = 0; i < b->nsyms; i++) - { - fixup_symbol_section (b->sym[i], objfile); - if (section == SYMBOL_BFD_SECTION (b->sym[i])) - break; - } - if (i >= b->nsyms) - continue; /* no symbol in this symtab matches section */ - } - distance = BLOCK_END (b) - BLOCK_START (b); - best_s = s; - } - } - - if (best_s != NULL) - return (best_s); - - s = NULL; - ps = find_pc_sect_psymtab (pc, section); - if (ps) - { - if (ps->readin) - /* Might want to error() here (in case symtab is corrupt and - will cause a core dump), but maybe we can successfully - continue, so let's not. */ - warning ("\ -(Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n", - paddr_nz (pc)); - s = PSYMTAB_TO_SYMTAB (ps); - } - return (s); -} - -/* Find the symtab associated with PC. Look through the psymtabs and - read in another symtab if necessary. Backward compatibility, no section */ - -struct symtab * -find_pc_symtab (CORE_ADDR pc) -{ - return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); -} - - -#if 0 - -/* Find the closest symbol value (of any sort -- function or variable) - for a given address value. Slow but complete. (currently unused, - mainly because it is too slow. We could fix it if each symtab and - psymtab had contained in it the addresses ranges of each of its - sections, which also would be required to make things like "info - line *0x2345" cause psymtabs to be converted to symtabs). */ - -struct symbol * -find_addr_symbol (CORE_ADDR addr, struct symtab **symtabp, CORE_ADDR *symaddrp) -{ - struct symtab *symtab, *best_symtab; - struct objfile *objfile; - register int bot, top; - register struct symbol *sym; - register CORE_ADDR sym_addr; - struct block *block; - int blocknum; - - /* Info on best symbol seen so far */ - - register CORE_ADDR best_sym_addr = 0; - struct symbol *best_sym = 0; - - /* FIXME -- we should pull in all the psymtabs, too! */ - ALL_SYMTABS (objfile, symtab) - { - /* Search the global and static blocks in this symtab for - the closest symbol-address to the desired address. */ - - for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++) - { - QUIT; - block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum); - top = BLOCK_NSYMS (block); - for (bot = 0; bot < top; bot++) - { - sym = BLOCK_SYM (block, bot); - switch (SYMBOL_CLASS (sym)) - { - case LOC_STATIC: - case LOC_LABEL: - sym_addr = SYMBOL_VALUE_ADDRESS (sym); - break; - - case LOC_INDIRECT: - sym_addr = SYMBOL_VALUE_ADDRESS (sym); - /* An indirect symbol really lives at *sym_addr, - * so an indirection needs to be done. - * However, I am leaving this commented out because it's - * expensive, and it's possible that symbolization - * could be done without an active process (in - * case this read_memory will fail). RT - sym_addr = read_memory_unsigned_integer - (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT); - */ - break; - - case LOC_BLOCK: - sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); - break; - - default: - continue; - } - - if (sym_addr <= addr) - if (sym_addr > best_sym_addr) - { - /* Quit if we found an exact match. */ - best_sym = sym; - best_sym_addr = sym_addr; - best_symtab = symtab; - if (sym_addr == addr) - goto done; - } - } - } - } - -done: - if (symtabp) - *symtabp = best_symtab; - if (symaddrp) - *symaddrp = best_sym_addr; - return best_sym; -} -#endif /* 0 */ - -/* Find the source file and line number for a given PC value and SECTION. - Return a structure containing a symtab pointer, a line number, - and a pc range for the entire source line. - The value's .pc field is NOT the specified pc. - NOTCURRENT nonzero means, if specified pc is on a line boundary, - use the line that ends there. Otherwise, in that case, the line - that begins there is used. */ - -/* The big complication here is that a line may start in one file, and end just - before the start of another file. This usually occurs when you #include - code in the middle of a subroutine. To properly find the end of a line's PC - range, we must search all symtabs associated with this compilation unit, and - find the one whose first PC is closer than that of the next line in this - symtab. */ - -/* If it's worth the effort, we could be using a binary search. */ - -struct symtab_and_line -find_pc_sect_line (CORE_ADDR pc, struct sec *section, int notcurrent) -{ - struct symtab *s; - register struct linetable *l; - register int len; - register int i; - register struct linetable_entry *item; - struct symtab_and_line val; - struct blockvector *bv; - struct minimal_symbol *msymbol; - struct minimal_symbol *mfunsym; - - /* Info on best line seen so far, and where it starts, and its file. */ - - struct linetable_entry *best = NULL; - CORE_ADDR best_end = 0; - struct symtab *best_symtab = 0; - - /* Store here the first line number - of a file which contains the line at the smallest pc after PC. - If we don't find a line whose range contains PC, - we will use a line one less than this, - with a range from the start of that file to the first line's pc. */ - struct linetable_entry *alt = NULL; - struct symtab *alt_symtab = 0; - - /* Info on best line seen in this file. */ - - struct linetable_entry *prev; - - /* If this pc is not from the current frame, - it is the address of the end of a call instruction. - Quite likely that is the start of the following statement. - But what we want is the statement containing the instruction. - Fudge the pc to make sure we get that. */ - - INIT_SAL (&val); /* initialize to zeroes */ - - /* It's tempting to assume that, if we can't find debugging info for - any function enclosing PC, that we shouldn't search for line - number info, either. However, GAS can emit line number info for - assembly files --- very helpful when debugging hand-written - assembly code. In such a case, we'd have no debug info for the - function, but we would have line info. */ - - if (notcurrent) - pc -= 1; - - /* elz: added this because this function returned the wrong - information if the pc belongs to a stub (import/export) - to call a shlib function. This stub would be anywhere between - two functions in the target, and the line info was erroneously - taken to be the one of the line before the pc. - */ - /* RT: Further explanation: - - * We have stubs (trampolines) inserted between procedures. - * - * Example: "shr1" exists in a shared library, and a "shr1" stub also - * exists in the main image. - * - * In the minimal symbol table, we have a bunch of symbols - * sorted by start address. The stubs are marked as "trampoline", - * the others appear as text. E.g.: - * - * Minimal symbol table for main image - * main: code for main (text symbol) - * shr1: stub (trampoline symbol) - * foo: code for foo (text symbol) - * ... - * Minimal symbol table for "shr1" image: - * ... - * shr1: code for shr1 (text symbol) - * ... - * - * So the code below is trying to detect if we are in the stub - * ("shr1" stub), and if so, find the real code ("shr1" trampoline), - * and if found, do the symbolization from the real-code address - * rather than the stub address. - * - * Assumptions being made about the minimal symbol table: - * 1. lookup_minimal_symbol_by_pc() will return a trampoline only - * if we're really in the trampoline. If we're beyond it (say - * we're in "foo" in the above example), it'll have a closer - * symbol (the "foo" text symbol for example) and will not - * return the trampoline. - * 2. lookup_minimal_symbol_text() will find a real text symbol - * corresponding to the trampoline, and whose address will - * be different than the trampoline address. I put in a sanity - * check for the address being the same, to avoid an - * infinite recursion. - */ - msymbol = lookup_minimal_symbol_by_pc (pc); - if (msymbol != NULL) - if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) - { - mfunsym = lookup_minimal_symbol_text (SYMBOL_NAME (msymbol), NULL, NULL); - if (mfunsym == NULL) - /* I eliminated this warning since it is coming out - * in the following situation: - * gdb shmain // test program with shared libraries - * (gdb) break shr1 // function in shared lib - * Warning: In stub for ... - * In the above situation, the shared lib is not loaded yet, - * so of course we can't find the real func/line info, - * but the "break" still works, and the warning is annoying. - * So I commented out the warning. RT */ - /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; - /* fall through */ - else if (SYMBOL_VALUE (mfunsym) == SYMBOL_VALUE (msymbol)) - /* Avoid infinite recursion */ - /* See above comment about why warning is commented out */ - /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ; - /* fall through */ - else - return find_pc_line (SYMBOL_VALUE (mfunsym), 0); - } - - - s = find_pc_sect_symtab (pc, section); - if (!s) - { - /* if no symbol information, return previous pc */ - if (notcurrent) - pc++; - val.pc = pc; - return val; - } - - bv = BLOCKVECTOR (s); - - /* Look at all the symtabs that share this blockvector. - They all have the same apriori range, that we found was right; - but they have different line tables. */ - - for (; s && BLOCKVECTOR (s) == bv; s = s->next) - { - /* Find the best line in this symtab. */ - l = LINETABLE (s); - if (!l) - continue; - len = l->nitems; - if (len <= 0) - { - /* I think len can be zero if the symtab lacks line numbers - (e.g. gcc -g1). (Either that or the LINETABLE is NULL; - I'm not sure which, and maybe it depends on the symbol - reader). */ - continue; - } - - prev = NULL; - item = l->item; /* Get first line info */ - - /* Is this file's first line closer than the first lines of other files? - If so, record this file, and its first line, as best alternate. */ - if (item->pc > pc && (!alt || item->pc < alt->pc)) - { - alt = item; - alt_symtab = s; - } - - for (i = 0; i < len; i++, item++) - { - /* Leave prev pointing to the linetable entry for the last line - that started at or before PC. */ - if (item->pc > pc) - break; - - prev = item; - } - - /* At this point, prev points at the line whose start addr is <= pc, and - item points at the next line. If we ran off the end of the linetable - (pc >= start of the last line), then prev == item. If pc < start of - the first line, prev will not be set. */ - - /* Is this file's best line closer than the best in the other files? - If so, record this file, and its best line, as best so far. */ - - if (prev && (!best || prev->pc > best->pc)) - { - best = prev; - best_symtab = s; - - /* Discard BEST_END if it's before the PC of the current BEST. */ - if (best_end <= best->pc) - best_end = 0; - } - - /* If another line (denoted by ITEM) is in the linetable and its - PC is after BEST's PC, but before the current BEST_END, then - use ITEM's PC as the new best_end. */ - if (best && i < len && item->pc > best->pc - && (best_end == 0 || best_end > item->pc)) - best_end = item->pc; - } - - if (!best_symtab) - { - if (!alt_symtab) - { /* If we didn't find any line # info, just - return zeros. */ - val.pc = pc; - } - else - { - val.symtab = alt_symtab; - val.line = alt->line - 1; - - /* Don't return line 0, that means that we didn't find the line. */ - if (val.line == 0) - ++val.line; - - val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); - val.end = alt->pc; - } - } - else - { - val.symtab = best_symtab; - val.line = best->line; - val.pc = best->pc; - if (best_end && (!alt || best_end < alt->pc)) - val.end = best_end; - else if (alt) - val.end = alt->pc; - else - val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); - } - val.section = section; - return val; -} - -/* Backward compatibility (no section) */ - -struct symtab_and_line -find_pc_line (CORE_ADDR pc, int notcurrent) -{ - asection *section; - - section = find_pc_overlay (pc); - if (pc_in_unmapped_range (pc, section)) - pc = overlay_mapped_address (pc, section); - return find_pc_sect_line (pc, section, notcurrent); -} - -/* Find line number LINE in any symtab whose name is the same as - SYMTAB. - - If found, return the symtab that contains the linetable in which it was - found, set *INDEX to the index in the linetable of the best entry - found, and set *EXACT_MATCH nonzero if the value returned is an - exact match. - - If not found, return NULL. */ - -struct symtab * -find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) -{ - int exact; - - /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE - so far seen. */ - - int best_index; - struct linetable *best_linetable; - struct symtab *best_symtab; - - /* First try looking it up in the given symtab. */ - best_linetable = LINETABLE (symtab); - best_symtab = symtab; - best_index = find_line_common (best_linetable, line, &exact); - if (best_index < 0 || !exact) - { - /* Didn't find an exact match. So we better keep looking for - another symtab with the same name. In the case of xcoff, - multiple csects for one source file (produced by IBM's FORTRAN - compiler) produce multiple symtabs (this is unavoidable - assuming csects can be at arbitrary places in memory and that - the GLOBAL_BLOCK of a symtab has a begin and end address). */ - - /* BEST is the smallest linenumber > LINE so far seen, - or 0 if none has been seen so far. - BEST_INDEX and BEST_LINETABLE identify the item for it. */ - int best; - - struct objfile *objfile; - struct symtab *s; - - if (best_index >= 0) - best = best_linetable->item[best_index].line; - else - best = 0; - - ALL_SYMTABS (objfile, s) - { - struct linetable *l; - int ind; - - if (!STREQ (symtab->filename, s->filename)) - continue; - l = LINETABLE (s); - ind = find_line_common (l, line, &exact); - if (ind >= 0) - { - if (exact) - { - best_index = ind; - best_linetable = l; - best_symtab = s; - goto done; - } - if (best == 0 || l->item[ind].line < best) - { - best = l->item[ind].line; - best_index = ind; - best_linetable = l; - best_symtab = s; - } - } - } - } -done: - if (best_index < 0) - return NULL; - - if (index) - *index = best_index; - if (exact_match) - *exact_match = exact; - - return best_symtab; -} - -/* Set the PC value for a given source file and line number and return true. - Returns zero for invalid line number (and sets the PC to 0). - The source file is specified with a struct symtab. */ - -int -find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) -{ - struct linetable *l; - int ind; - - *pc = 0; - if (symtab == 0) - return 0; - - symtab = find_line_symtab (symtab, line, &ind, NULL); - if (symtab != NULL) - { - l = LINETABLE (symtab); - *pc = l->item[ind].pc; - return 1; - } - else - return 0; -} - -/* Find the range of pc values in a line. - Store the starting pc of the line into *STARTPTR - and the ending pc (start of next line) into *ENDPTR. - Returns 1 to indicate success. - Returns 0 if could not find the specified line. */ - -int -find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, - CORE_ADDR *endptr) -{ - CORE_ADDR startaddr; - struct symtab_and_line found_sal; - - startaddr = sal.pc; - if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) - return 0; - - /* This whole function is based on address. For example, if line 10 has - two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then - "info line *0x123" should say the line goes from 0x100 to 0x200 - and "info line *0x355" should say the line goes from 0x300 to 0x400. - This also insures that we never give a range like "starts at 0x134 - and ends at 0x12c". */ - - found_sal = find_pc_sect_line (startaddr, sal.section, 0); - if (found_sal.line != sal.line) - { - /* The specified line (sal) has zero bytes. */ - *startptr = found_sal.pc; - *endptr = found_sal.pc; - } - else - { - *startptr = found_sal.pc; - *endptr = found_sal.end; - } - return 1; -} - -/* Given a line table and a line number, return the index into the line - table for the pc of the nearest line whose number is >= the specified one. - Return -1 if none is found. The value is >= 0 if it is an index. - - Set *EXACT_MATCH nonzero if the value returned is an exact match. */ - -static int -find_line_common (register struct linetable *l, register int lineno, - int *exact_match) -{ - register int i; - register int len; - - /* BEST is the smallest linenumber > LINENO so far seen, - or 0 if none has been seen so far. - BEST_INDEX identifies the item for it. */ - - int best_index = -1; - int best = 0; - - if (lineno <= 0) - return -1; - if (l == 0) - return -1; - - len = l->nitems; - for (i = 0; i < len; i++) - { - register struct linetable_entry *item = &(l->item[i]); - - if (item->line == lineno) - { - /* Return the first (lowest address) entry which matches. */ - *exact_match = 1; - return i; - } - - if (item->line > lineno && (best == 0 || item->line < best)) - { - best = item->line; - best_index = i; - } - } - - /* If we got here, we didn't get an exact match. */ - - *exact_match = 0; - return best_index; -} - -int -find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) -{ - struct symtab_and_line sal; - sal = find_pc_line (pc, 0); - *startptr = sal.pc; - *endptr = sal.end; - return sal.symtab != 0; -} - -/* Given a function symbol SYM, find the symtab and line for the start - of the function. - If the argument FUNFIRSTLINE is nonzero, we want the first line - of real code inside the function. */ - -struct symtab_and_line -find_function_start_sal (struct symbol *sym, int funfirstline) -{ - CORE_ADDR pc; - struct symtab_and_line sal; - - pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); - fixup_symbol_section (sym, NULL); - if (funfirstline) - { /* skip "first line" of function (which is actually its prologue) */ - asection *section = SYMBOL_BFD_SECTION (sym); - /* If function is in an unmapped overlay, use its unmapped LMA - address, so that SKIP_PROLOGUE has something unique to work on */ - if (section_is_overlay (section) && - !section_is_mapped (section)) - pc = overlay_unmapped_address (pc, section); - - pc += FUNCTION_START_OFFSET; - pc = SKIP_PROLOGUE (pc); - - /* For overlays, map pc back into its mapped VMA range */ - pc = overlay_mapped_address (pc, section); - } - sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); - -#ifdef PROLOGUE_FIRSTLINE_OVERLAP - /* Convex: no need to suppress code on first line, if any */ - sal.pc = pc; -#else - /* Check if SKIP_PROLOGUE left us in mid-line, and the next - line is still part of the same function. */ - if (sal.pc != pc - && BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end - && sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) - { - /* First pc of next line */ - pc = sal.end; - /* Recalculate the line number (might not be N+1). */ - sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); - } - sal.pc = pc; -#endif - - return sal; -} - -/* If P is of the form "operator[ \t]+..." where `...' is - some legitimate operator text, return a pointer to the - beginning of the substring of the operator text. - Otherwise, return "". */ -char * -operator_chars (char *p, char **end) -{ - *end = ""; - if (strncmp (p, "operator", 8)) - return *end; - p += 8; - - /* Don't get faked out by `operator' being part of a longer - identifier. */ - if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') - return *end; - - /* Allow some whitespace between `operator' and the operator symbol. */ - while (*p == ' ' || *p == '\t') - p++; - - /* Recognize 'operator TYPENAME'. */ - - if (isalpha (*p) || *p == '_' || *p == '$') - { - register char *q = p + 1; - while (isalnum (*q) || *q == '_' || *q == '$') - q++; - *end = q; - return p; - } - - while (*p) - switch (*p) - { - case '\\': /* regexp quoting */ - if (p[1] == '*') - { - if (p[2] == '=') /* 'operator\*=' */ - *end = p + 3; - else /* 'operator\*' */ - *end = p + 2; - return p; - } - else if (p[1] == '[') - { - if (p[2] == ']') - error ("mismatched quoting on brackets, try 'operator\\[\\]'"); - else if (p[2] == '\\' && p[3] == ']') - { - *end = p + 4; /* 'operator\[\]' */ - return p; - } - else - error ("nothing is allowed between '[' and ']'"); - } - else - { - /* Gratuitous qoute: skip it and move on. */ - p++; - continue; - } - break; - case '!': - case '=': - case '*': - case '/': - case '%': - case '^': - if (p[1] == '=') - *end = p + 2; - else - *end = p + 1; - return p; - case '<': - case '>': - case '+': - case '-': - case '&': - case '|': - if (p[0] == '-' && p[1] == '>') - { - /* Struct pointer member operator 'operator->'. */ - if (p[2] == '*') - { - *end = p + 3; /* 'operator->*' */ - return p; - } - else if (p[2] == '\\') - { - *end = p + 4; /* Hopefully 'operator->\*' */ - return p; - } - else - { - *end = p + 2; /* 'operator->' */ - return p; - } - } - if (p[1] == '=' || p[1] == p[0]) - *end = p + 2; - else - *end = p + 1; - return p; - case '~': - case ',': - *end = p + 1; - return p; - case '(': - if (p[1] != ')') - error ("`operator ()' must be specified without whitespace in `()'"); - *end = p + 2; - return p; - case '?': - if (p[1] != ':') - error ("`operator ?:' must be specified without whitespace in `?:'"); - *end = p + 2; - return p; - case '[': - if (p[1] != ']') - error ("`operator []' must be specified without whitespace in `[]'"); - *end = p + 2; - return p; - default: - error ("`operator %s' not supported", p); - break; - } - - *end = ""; - return *end; -} - - -/* If FILE is not already in the table of files, return zero; - otherwise return non-zero. Optionally add FILE to the table if ADD - is non-zero. If *FIRST is non-zero, forget the old table - contents. */ -static int -filename_seen (const char *file, int add, int *first) -{ - /* Table of files seen so far. */ - static const char **tab = NULL; - /* Allocated size of tab in elements. - Start with one 256-byte block (when using GNU malloc.c). - 24 is the malloc overhead when range checking is in effect. */ - static int tab_alloc_size = (256 - 24) / sizeof (char *); - /* Current size of tab in elements. */ - static int tab_cur_size; - const char **p; - - if (*first) - { - if (tab == NULL) - tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab)); - tab_cur_size = 0; - } - - /* Is FILE in tab? */ - for (p = tab; p < tab + tab_cur_size; p++) - if (strcmp (*p, file) == 0) - return 1; - - /* No; maybe add it to tab. */ - if (add) - { - if (tab_cur_size == tab_alloc_size) - { - tab_alloc_size *= 2; - tab = (const char **) xrealloc ((char *) tab, - tab_alloc_size * sizeof (*tab)); - } - tab[tab_cur_size++] = file; - } - - return 0; -} - -/* Slave routine for sources_info. Force line breaks at ,'s. - NAME is the name to print and *FIRST is nonzero if this is the first - name printed. Set *FIRST to zero. */ -static void -output_source_filename (char *name, int *first) -{ - /* Since a single source file can result in several partial symbol - tables, we need to avoid printing it more than once. Note: if - some of the psymtabs are read in and some are not, it gets - printed both under "Source files for which symbols have been - read" and "Source files for which symbols will be read in on - demand". I consider this a reasonable way to deal with the - situation. I'm not sure whether this can also happen for - symtabs; it doesn't hurt to check. */ - - /* Was NAME already seen? */ - if (filename_seen (name, 1, first)) - { - /* Yes; don't print it again. */ - return; - } - /* No; print it and reset *FIRST. */ - if (*first) - { - *first = 0; - } - else - { - printf_filtered (", "); - } - - wrap_here (""); - fputs_filtered (name, gdb_stdout); -} - -static void -sources_info (char *ignore, int from_tty) -{ - register struct symtab *s; - register struct partial_symtab *ps; - register struct objfile *objfile; - int first; - - if (!have_full_symbols () && !have_partial_symbols ()) - { - error ("No symbol table is loaded. Use the \"file\" command."); - } - - printf_filtered ("Source files for which symbols have been read in:\n\n"); - - first = 1; - ALL_SYMTABS (objfile, s) - { - output_source_filename (s->filename, &first); - } - printf_filtered ("\n\n"); - - printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); - - first = 1; - ALL_PSYMTABS (objfile, ps) - { - if (!ps->readin) - { - output_source_filename (ps->filename, &first); - } - } - printf_filtered ("\n"); -} - -static int -file_matches (char *file, char *files[], int nfiles) -{ - int i; - - if (file != NULL && nfiles != 0) - { - for (i = 0; i < nfiles; i++) - { - if (strcmp (files[i], lbasename (file)) == 0) - return 1; - } - } - else if (nfiles == 0) - return 1; - return 0; -} - -/* Free any memory associated with a search. */ -void -free_search_symbols (struct symbol_search *symbols) -{ - struct symbol_search *p; - struct symbol_search *next; - - for (p = symbols; p != NULL; p = next) - { - next = p->next; - xfree (p); - } -} - -static void -do_free_search_symbols_cleanup (void *symbols) -{ - free_search_symbols (symbols); -} - -struct cleanup * -make_cleanup_free_search_symbols (struct symbol_search *symbols) -{ - return make_cleanup (do_free_search_symbols_cleanup, symbols); -} - - -/* Search the symbol table for matches to the regular expression REGEXP, - returning the results in *MATCHES. - - Only symbols of KIND are searched: - FUNCTIONS_NAMESPACE - search all functions - TYPES_NAMESPACE - search all type names - METHODS_NAMESPACE - search all methods NOT IMPLEMENTED - VARIABLES_NAMESPACE - search all symbols, excluding functions, type names, - and constants (enums) - - free_search_symbols should be called when *MATCHES is no longer needed. - */ -void -search_symbols (char *regexp, namespace_enum kind, int nfiles, char *files[], - struct symbol_search **matches) -{ - register struct symtab *s; - register struct partial_symtab *ps; - register struct blockvector *bv; - struct blockvector *prev_bv = 0; - register struct block *b; - register int i = 0; - register int j; - register struct symbol *sym; - struct partial_symbol **psym; - struct objfile *objfile; - struct minimal_symbol *msymbol; - char *val; - int found_misc = 0; - static enum minimal_symbol_type types[] - = - {mst_data, mst_text, mst_abs, mst_unknown}; - static enum minimal_symbol_type types2[] - = - {mst_bss, mst_file_text, mst_abs, mst_unknown}; - static enum minimal_symbol_type types3[] - = - {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; - static enum minimal_symbol_type types4[] - = - {mst_file_bss, mst_text, mst_abs, mst_unknown}; - enum minimal_symbol_type ourtype; - enum minimal_symbol_type ourtype2; - enum minimal_symbol_type ourtype3; - enum minimal_symbol_type ourtype4; - struct symbol_search *sr; - struct symbol_search *psr; - struct symbol_search *tail; - struct cleanup *old_chain = NULL; - - if (kind < VARIABLES_NAMESPACE) - error ("must search on specific namespace"); - - ourtype = types[(int) (kind - VARIABLES_NAMESPACE)]; - ourtype2 = types2[(int) (kind - VARIABLES_NAMESPACE)]; - ourtype3 = types3[(int) (kind - VARIABLES_NAMESPACE)]; - ourtype4 = types4[(int) (kind - VARIABLES_NAMESPACE)]; - - sr = *matches = NULL; - tail = NULL; - - if (regexp != NULL) - { - /* Make sure spacing is right for C++ operators. - This is just a courtesy to make the matching less sensitive - to how many spaces the user leaves between 'operator' - and <TYPENAME> or <OPERATOR>. */ - char *opend; - char *opname = operator_chars (regexp, &opend); - if (*opname) - { - int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ - if (isalpha (*opname) || *opname == '_' || *opname == '$') - { - /* There should 1 space between 'operator' and 'TYPENAME'. */ - if (opname[-1] != ' ' || opname[-2] == ' ') - fix = 1; - } - else - { - /* There should 0 spaces between 'operator' and 'OPERATOR'. */ - if (opname[-1] == ' ') - fix = 0; - } - /* If wrong number of spaces, fix it. */ - if (fix >= 0) - { - char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); - sprintf (tmp, "operator%.*s%s", fix, " ", opname); - regexp = tmp; - } - } - - if (0 != (val = re_comp (regexp))) - error ("Invalid regexp (%s): %s", val, regexp); - } - - /* Search through the partial symtabs *first* for all symbols - matching the regexp. That way we don't have to reproduce all of - the machinery below. */ - - ALL_PSYMTABS (objfile, ps) - { - struct partial_symbol **bound, **gbound, **sbound; - int keep_going = 1; - - if (ps->readin) - continue; - - gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; - sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; - bound = gbound; - - /* Go through all of the symbols stored in a partial - symtab in one loop. */ - psym = objfile->global_psymbols.list + ps->globals_offset; - while (keep_going) - { - if (psym >= bound) - { - if (bound == gbound && ps->n_static_syms != 0) - { - psym = objfile->static_psymbols.list + ps->statics_offset; - bound = sbound; - } - else - keep_going = 0; - continue; - } - else - { - QUIT; - - /* If it would match (logic taken from loop below) - load the file and go on to the next one */ - if (file_matches (ps->filename, files, nfiles) - && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym)) - && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (*psym) != LOC_TYPEDEF - && SYMBOL_CLASS (*psym) != LOC_BLOCK) - || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK) - || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_TYPEDEF) - || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (*psym) == LOC_BLOCK)))) - { - PSYMTAB_TO_SYMTAB (ps); - keep_going = 0; - } - } - psym++; - } - } - - /* Here, we search through the minimal symbol tables for functions - and variables that match, and force their symbols to be read. - This is in particular necessary for demangled variable names, - which are no longer put into the partial symbol tables. - The symbol will then be found during the scan of symtabs below. - - For functions, find_pc_symtab should succeed if we have debug info - for the function, for variables we have to call lookup_symbol - to determine if the variable has debug info. - If the lookup fails, set found_misc so that we will rescan to print - any matching symbols without debug info. - */ - - if (nfiles == 0 && (kind == VARIABLES_NAMESPACE || kind == FUNCTIONS_NAMESPACE)) - { - ALL_MSYMBOLS (objfile, msymbol) - { - if (MSYMBOL_TYPE (msymbol) == ourtype || - MSYMBOL_TYPE (msymbol) == ourtype2 || - MSYMBOL_TYPE (msymbol) == ourtype3 || - MSYMBOL_TYPE (msymbol) == ourtype4) - { - if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) - { - if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) - { - if (kind == FUNCTIONS_NAMESPACE - || lookup_symbol (SYMBOL_NAME (msymbol), - (struct block *) NULL, - VAR_NAMESPACE, - 0, (struct symtab **) NULL) == NULL) - found_misc = 1; - } - } - } - } - } - - ALL_SYMTABS (objfile, s) - { - bv = BLOCKVECTOR (s); - /* Often many files share a blockvector. - Scan each blockvector only once so that - we don't get every symbol many times. - It happens that the first symtab in the list - for any given blockvector is the main file. */ - if (bv != prev_bv) - for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) - { - b = BLOCKVECTOR_BLOCK (bv, i); - /* Skip the sort if this block is always sorted. */ - if (!BLOCK_SHOULD_SORT (b)) - sort_block_syms (b); - for (j = 0; j < BLOCK_NSYMS (b); j++) - { - QUIT; - sym = BLOCK_SYM (b, j); - if (file_matches (s->filename, files, nfiles) - && ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym)) - && ((kind == VARIABLES_NAMESPACE && SYMBOL_CLASS (sym) != LOC_TYPEDEF - && SYMBOL_CLASS (sym) != LOC_BLOCK - && SYMBOL_CLASS (sym) != LOC_CONST) - || (kind == FUNCTIONS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK) - || (kind == TYPES_NAMESPACE && SYMBOL_CLASS (sym) == LOC_TYPEDEF) - || (kind == METHODS_NAMESPACE && SYMBOL_CLASS (sym) == LOC_BLOCK)))) - { - /* match */ - psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); - psr->block = i; - psr->symtab = s; - psr->symbol = sym; - psr->msymbol = NULL; - psr->next = NULL; - if (tail == NULL) - { - sr = psr; - old_chain = make_cleanup_free_search_symbols (sr); - } - else - tail->next = psr; - tail = psr; - } - } - } - prev_bv = bv; - } - - /* If there are no eyes, avoid all contact. I mean, if there are - no debug symbols, then print directly from the msymbol_vector. */ - - if (found_misc || kind != FUNCTIONS_NAMESPACE) - { - ALL_MSYMBOLS (objfile, msymbol) - { - if (MSYMBOL_TYPE (msymbol) == ourtype || - MSYMBOL_TYPE (msymbol) == ourtype2 || - MSYMBOL_TYPE (msymbol) == ourtype3 || - MSYMBOL_TYPE (msymbol) == ourtype4) - { - if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol)) - { - /* Functions: Look up by address. */ - if (kind != FUNCTIONS_NAMESPACE || - (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) - { - /* Variables/Absolutes: Look up by name */ - if (lookup_symbol (SYMBOL_NAME (msymbol), - (struct block *) NULL, VAR_NAMESPACE, - 0, (struct symtab **) NULL) == NULL) - { - /* match */ - psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); - psr->block = i; - psr->msymbol = msymbol; - psr->symtab = NULL; - psr->symbol = NULL; - psr->next = NULL; - if (tail == NULL) - { - sr = psr; - old_chain = make_cleanup_free_search_symbols (sr); - } - else - tail->next = psr; - tail = psr; - } - } - } - } - } - } - - *matches = sr; - if (sr != NULL) - discard_cleanups (old_chain); -} - -/* Helper function for symtab_symbol_info, this function uses - the data returned from search_symbols() to print information - regarding the match to gdb_stdout. - */ -static void -print_symbol_info (namespace_enum kind, struct symtab *s, struct symbol *sym, - int block, char *last) -{ - if (last == NULL || strcmp (last, s->filename) != 0) - { - fputs_filtered ("\nFile ", gdb_stdout); - fputs_filtered (s->filename, gdb_stdout); - fputs_filtered (":\n", gdb_stdout); - } - - if (kind != TYPES_NAMESPACE && block == STATIC_BLOCK) - printf_filtered ("static "); - - /* Typedef that is not a C++ class */ - if (kind == TYPES_NAMESPACE - && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE) - typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); - /* variable, func, or typedef-that-is-c++-class */ - else if (kind < TYPES_NAMESPACE || - (kind == TYPES_NAMESPACE && - SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE)) - { - type_print (SYMBOL_TYPE (sym), - (SYMBOL_CLASS (sym) == LOC_TYPEDEF - ? "" : SYMBOL_SOURCE_NAME (sym)), - gdb_stdout, 0); - - printf_filtered (";\n"); - } - else - { -#if 0 - /* Tiemann says: "info methods was never implemented." */ - char *demangled_name; - c_type_print_base (TYPE_FN_FIELD_TYPE (t, block), - gdb_stdout, 0, 0); - c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t, block), - gdb_stdout, 0); - if (TYPE_FN_FIELD_STUB (t, block)) - check_stub_method (TYPE_DOMAIN_TYPE (type), j, block); - demangled_name = - cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t, block), - DMGL_ANSI | DMGL_PARAMS); - if (demangled_name == NULL) - fprintf_filtered (stream, "<badly mangled name %s>", - TYPE_FN_FIELD_PHYSNAME (t, block)); - else - { - fputs_filtered (demangled_name, stream); - xfree (demangled_name); - } -#endif - } -} - -/* This help function for symtab_symbol_info() prints information - for non-debugging symbols to gdb_stdout. - */ -static void -print_msymbol_info (struct minimal_symbol *msymbol) -{ - char *tmp; - - if (TARGET_ADDR_BIT <= 32) - tmp = longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol) - & (CORE_ADDR) 0xffffffff, - "08l"); - else - tmp = longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol), - "016l"); - printf_filtered ("%s %s\n", - tmp, SYMBOL_SOURCE_NAME (msymbol)); -} - -/* This is the guts of the commands "info functions", "info types", and - "info variables". It calls search_symbols to find all matches and then - print_[m]symbol_info to print out some useful information about the - matches. - */ -static void -symtab_symbol_info (char *regexp, namespace_enum kind, int from_tty) -{ - static char *classnames[] - = - {"variable", "function", "type", "method"}; - struct symbol_search *symbols; - struct symbol_search *p; - struct cleanup *old_chain; - char *last_filename = NULL; - int first = 1; - - /* must make sure that if we're interrupted, symbols gets freed */ - search_symbols (regexp, kind, 0, (char **) NULL, &symbols); - old_chain = make_cleanup_free_search_symbols (symbols); - - printf_filtered (regexp - ? "All %ss matching regular expression \"%s\":\n" - : "All defined %ss:\n", - classnames[(int) (kind - VARIABLES_NAMESPACE)], regexp); - - for (p = symbols; p != NULL; p = p->next) - { - QUIT; - - if (p->msymbol != NULL) - { - if (first) - { - printf_filtered ("\nNon-debugging symbols:\n"); - first = 0; - } - print_msymbol_info (p->msymbol); - } - else - { - print_symbol_info (kind, - p->symtab, - p->symbol, - p->block, - last_filename); - last_filename = p->symtab->filename; - } - } - - do_cleanups (old_chain); -} - -static void -variables_info (char *regexp, int from_tty) -{ - symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty); -} - -static void -functions_info (char *regexp, int from_tty) -{ - symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty); -} - - -static void -types_info (char *regexp, int from_tty) -{ - symtab_symbol_info (regexp, TYPES_NAMESPACE, from_tty); -} - -#if 0 -/* Tiemann says: "info methods was never implemented." */ -static void -methods_info (char *regexp) -{ - symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty); -} -#endif /* 0 */ - -/* Breakpoint all functions matching regular expression. */ - -void -rbreak_command_wrapper (char *regexp, int from_tty) -{ - rbreak_command (regexp, from_tty); -} - -static void -rbreak_command (char *regexp, int from_tty) -{ - struct symbol_search *ss; - struct symbol_search *p; - struct cleanup *old_chain; - - search_symbols (regexp, FUNCTIONS_NAMESPACE, 0, (char **) NULL, &ss); - old_chain = make_cleanup_free_search_symbols (ss); - - for (p = ss; p != NULL; p = p->next) - { - if (p->msymbol == NULL) - { - char *string = (char *) alloca (strlen (p->symtab->filename) - + strlen (SYMBOL_NAME (p->symbol)) - + 4); - strcpy (string, p->symtab->filename); - strcat (string, ":'"); - strcat (string, SYMBOL_NAME (p->symbol)); - strcat (string, "'"); - break_command (string, from_tty); - print_symbol_info (FUNCTIONS_NAMESPACE, - p->symtab, - p->symbol, - p->block, - p->symtab->filename); - } - else - { - break_command (SYMBOL_NAME (p->msymbol), from_tty); - printf_filtered ("<function, no debug info> %s;\n", - SYMBOL_SOURCE_NAME (p->msymbol)); - } - } - - do_cleanups (old_chain); -} - - -/* Return Nonzero if block a is lexically nested within block b, - or if a and b have the same pc range. - Return zero otherwise. */ -int -contained_in (struct block *a, struct block *b) -{ - if (!a || !b) - return 0; - return BLOCK_START (a) >= BLOCK_START (b) - && BLOCK_END (a) <= BLOCK_END (b); -} - - -/* Helper routine for make_symbol_completion_list. */ - -static int return_val_size; -static int return_val_index; -static char **return_val; - -#define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ - do { \ - if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \ - /* Put only the mangled name on the list. */ \ - /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \ - /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \ - completion_list_add_name \ - (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \ - else \ - completion_list_add_name \ - (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \ - } while (0) - -/* Test to see if the symbol specified by SYMNAME (which is already - demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN - characters. If so, add it to the current completion list. */ - -static void -completion_list_add_name (char *symname, char *sym_text, int sym_text_len, - char *text, char *word) -{ - int newsize; - int i; - - /* clip symbols that cannot match */ - - if (strncmp (symname, sym_text, sym_text_len) != 0) - { - return; - } - - /* We have a match for a completion, so add SYMNAME to the current list - of matches. Note that the name is moved to freshly malloc'd space. */ - - { - char *new; - if (word == sym_text) - { - new = xmalloc (strlen (symname) + 5); - strcpy (new, symname); - } - else if (word > sym_text) - { - /* Return some portion of symname. */ - new = xmalloc (strlen (symname) + 5); - strcpy (new, symname + (word - sym_text)); - } - else - { - /* Return some of SYM_TEXT plus symname. */ - new = xmalloc (strlen (symname) + (sym_text - word) + 5); - strncpy (new, word, sym_text - word); - new[sym_text - word] = '\0'; - strcat (new, symname); - } - - if (return_val_index + 3 > return_val_size) - { - newsize = (return_val_size *= 2) * sizeof (char *); - return_val = (char **) xrealloc ((char *) return_val, newsize); - } - return_val[return_val_index++] = new; - return_val[return_val_index] = NULL; - } -} - -/* Return a NULL terminated array of all symbols (regardless of class) - which begin by matching TEXT. If the answer is no symbols, then - the return value is an array which contains only a NULL pointer. - - Problem: All of the symbols have to be copied because readline frees them. - I'm not going to worry about this; hopefully there won't be that many. */ - -char ** -make_symbol_completion_list (char *text, char *word) -{ - register struct symbol *sym; - register struct symtab *s; - register struct partial_symtab *ps; - register struct minimal_symbol *msymbol; - register struct objfile *objfile; - register struct block *b, *surrounding_static_block = 0; - register int i, j; - struct partial_symbol **psym; - /* The symbol we are completing on. Points in same buffer as text. */ - char *sym_text; - /* Length of sym_text. */ - int sym_text_len; - - /* Now look for the symbol we are supposed to complete on. - FIXME: This should be language-specific. */ - { - char *p; - char quote_found; - char *quote_pos = NULL; - - /* First see if this is a quoted string. */ - quote_found = '\0'; - for (p = text; *p != '\0'; ++p) - { - if (quote_found != '\0') - { - if (*p == quote_found) - /* Found close quote. */ - quote_found = '\0'; - else if (*p == '\\' && p[1] == quote_found) - /* A backslash followed by the quote character - doesn't end the string. */ - ++p; - } - else if (*p == '\'' || *p == '"') - { - quote_found = *p; - quote_pos = p; - } - } - if (quote_found == '\'') - /* A string within single quotes can be a symbol, so complete on it. */ - sym_text = quote_pos + 1; - else if (quote_found == '"') - /* A double-quoted string is never a symbol, nor does it make sense - to complete it any other way. */ - { - return_val = (char **) xmalloc (sizeof (char *)); - return_val[0] = NULL; - return return_val; - } - else - { - /* It is not a quoted string. Break it based on the characters - which are in symbols. */ - while (p > text) - { - if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') - --p; - else - break; - } - sym_text = p; - } - } - - sym_text_len = strlen (sym_text); - - return_val_size = 100; - return_val_index = 0; - return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); - return_val[0] = NULL; - - /* Look through the partial symtabs for all symbols which begin - by matching SYM_TEXT. Add each one that you find to the list. */ - - ALL_PSYMTABS (objfile, ps) - { - /* If the psymtab's been read in we'll get it when we search - through the blockvector. */ - if (ps->readin) - continue; - - for (psym = objfile->global_psymbols.list + ps->globals_offset; - psym < (objfile->global_psymbols.list + ps->globals_offset - + ps->n_global_syms); - psym++) - { - /* If interrupted, then quit. */ - QUIT; - COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); - } - - for (psym = objfile->static_psymbols.list + ps->statics_offset; - psym < (objfile->static_psymbols.list + ps->statics_offset - + ps->n_static_syms); - psym++) - { - QUIT; - COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); - } - } - - /* At this point scan through the misc symbol vectors and add each - symbol you find to the list. Eventually we want to ignore - anything that isn't a text symbol (everything else will be - handled by the psymtab code above). */ - - ALL_MSYMBOLS (objfile, msymbol) - { - QUIT; - COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); - } - - /* Search upwards from currently selected frame (so that we can - complete on local vars. */ - - for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) - { - if (!BLOCK_SUPERBLOCK (b)) - { - surrounding_static_block = b; /* For elmin of dups */ - } - - /* Also catch fields of types defined in this places which match our - text string. Only complete on types visible from current context. */ - - ALL_BLOCK_SYMBOLS (b, i, sym) - { - COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); - if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) - { - struct type *t = SYMBOL_TYPE (sym); - enum type_code c = TYPE_CODE (t); - - if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) - { - for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) - { - if (TYPE_FIELD_NAME (t, j)) - { - completion_list_add_name (TYPE_FIELD_NAME (t, j), - sym_text, sym_text_len, text, word); - } - } - } - } - } - } - - /* Go through the symtabs and check the externs and statics for - symbols which match. */ - - ALL_SYMTABS (objfile, s) - { - QUIT; - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); - ALL_BLOCK_SYMBOLS (b, i, sym) - { - COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); - } - } - - ALL_SYMTABS (objfile, s) - { - QUIT; - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); - /* Don't do this block twice. */ - if (b == surrounding_static_block) - continue; - ALL_BLOCK_SYMBOLS (b, i, sym) - { - COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); - } - } - - return (return_val); -} - -/* Like make_symbol_completion_list, but returns a list of symbols - defined in a source file FILE. */ - -char ** -make_file_symbol_completion_list (char *text, char *word, char *srcfile) -{ - register struct symbol *sym; - register struct symtab *s; - register struct block *b; - register int i; - /* The symbol we are completing on. Points in same buffer as text. */ - char *sym_text; - /* Length of sym_text. */ - int sym_text_len; - - /* Now look for the symbol we are supposed to complete on. - FIXME: This should be language-specific. */ - { - char *p; - char quote_found; - char *quote_pos = NULL; - - /* First see if this is a quoted string. */ - quote_found = '\0'; - for (p = text; *p != '\0'; ++p) - { - if (quote_found != '\0') - { - if (*p == quote_found) - /* Found close quote. */ - quote_found = '\0'; - else if (*p == '\\' && p[1] == quote_found) - /* A backslash followed by the quote character - doesn't end the string. */ - ++p; - } - else if (*p == '\'' || *p == '"') - { - quote_found = *p; - quote_pos = p; - } - } - if (quote_found == '\'') - /* A string within single quotes can be a symbol, so complete on it. */ - sym_text = quote_pos + 1; - else if (quote_found == '"') - /* A double-quoted string is never a symbol, nor does it make sense - to complete it any other way. */ - { - return_val = (char **) xmalloc (sizeof (char *)); - return_val[0] = NULL; - return return_val; - } - else - { - /* It is not a quoted string. Break it based on the characters - which are in symbols. */ - while (p > text) - { - if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') - --p; - else - break; - } - sym_text = p; - } - } - - sym_text_len = strlen (sym_text); - - return_val_size = 10; - return_val_index = 0; - return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); - return_val[0] = NULL; - - /* Find the symtab for SRCFILE (this loads it if it was not yet read - in). */ - s = lookup_symtab (srcfile); - if (s == NULL) - { - /* Maybe they typed the file with leading directories, while the - symbol tables record only its basename. */ - const char *tail = lbasename (srcfile); - - if (tail > srcfile) - s = lookup_symtab (tail); - } - - /* If we have no symtab for that file, return an empty list. */ - if (s == NULL) - return (return_val); - - /* Go through this symtab and check the externs and statics for - symbols which match. */ - - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); - ALL_BLOCK_SYMBOLS (b, i, sym) - { - COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); - } - - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); - ALL_BLOCK_SYMBOLS (b, i, sym) - { - COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); - } - - return (return_val); -} - -/* A helper function for make_source_files_completion_list. It adds - another file name to a list of possible completions, growing the - list as necessary. */ - -static void -add_filename_to_list (const char *fname, char *text, char *word, - char ***list, int *list_used, int *list_alloced) -{ - char *new; - size_t fnlen = strlen (fname); - - if (*list_used + 1 >= *list_alloced) - { - *list_alloced *= 2; - *list = (char **) xrealloc ((char *) *list, - *list_alloced * sizeof (char *)); - } - - if (word == text) - { - /* Return exactly fname. */ - new = xmalloc (fnlen + 5); - strcpy (new, fname); - } - else if (word > text) - { - /* Return some portion of fname. */ - new = xmalloc (fnlen + 5); - strcpy (new, fname + (word - text)); - } - else - { - /* Return some of TEXT plus fname. */ - new = xmalloc (fnlen + (text - word) + 5); - strncpy (new, word, text - word); - new[text - word] = '\0'; - strcat (new, fname); - } - (*list)[*list_used] = new; - (*list)[++*list_used] = NULL; -} - -static int -not_interesting_fname (const char *fname) -{ - static const char *illegal_aliens[] = { - "_globals_", /* inserted by coff_symtab_read */ - NULL - }; - int i; - - for (i = 0; illegal_aliens[i]; i++) - { - if (strcmp (fname, illegal_aliens[i]) == 0) - return 1; - } - return 0; -} - -/* Return a NULL terminated array of all source files whose names - begin with matching TEXT. The file names are looked up in the - symbol tables of this program. If the answer is no matchess, then - the return value is an array which contains only a NULL pointer. */ - -char ** -make_source_files_completion_list (char *text, char *word) -{ - register struct symtab *s; - register struct partial_symtab *ps; - register struct objfile *objfile; - int first = 1; - int list_alloced = 1; - int list_used = 0; - size_t text_len = strlen (text); - char **list = (char **) xmalloc (list_alloced * sizeof (char *)); - const char *base_name; - - list[0] = NULL; - - if (!have_full_symbols () && !have_partial_symbols ()) - return list; - - ALL_SYMTABS (objfile, s) - { - if (not_interesting_fname (s->filename)) - continue; - if (!filename_seen (s->filename, 1, &first) -#if HAVE_DOS_BASED_FILE_SYSTEM - && strncasecmp (s->filename, text, text_len) == 0 -#else - && strncmp (s->filename, text, text_len) == 0 -#endif - ) - { - /* This file matches for a completion; add it to the current - list of matches. */ - add_filename_to_list (s->filename, text, word, - &list, &list_used, &list_alloced); - } - else - { - /* NOTE: We allow the user to type a base name when the - debug info records leading directories, but not the other - way around. This is what subroutines of breakpoint - command do when they parse file names. */ - base_name = lbasename (s->filename); - if (base_name != s->filename - && !filename_seen (base_name, 1, &first) -#if HAVE_DOS_BASED_FILE_SYSTEM - && strncasecmp (base_name, text, text_len) == 0 -#else - && strncmp (base_name, text, text_len) == 0 -#endif - ) - add_filename_to_list (base_name, text, word, - &list, &list_used, &list_alloced); - } - } - - ALL_PSYMTABS (objfile, ps) - { - if (not_interesting_fname (ps->filename)) - continue; - if (!ps->readin) - { - if (!filename_seen (ps->filename, 1, &first) -#if HAVE_DOS_BASED_FILE_SYSTEM - && strncasecmp (ps->filename, text, text_len) == 0 -#else - && strncmp (ps->filename, text, text_len) == 0 -#endif - ) - { - /* This file matches for a completion; add it to the - current list of matches. */ - add_filename_to_list (ps->filename, text, word, - &list, &list_used, &list_alloced); - - } - else - { - base_name = lbasename (ps->filename); - if (base_name != ps->filename - && !filename_seen (base_name, 1, &first) -#if HAVE_DOS_BASED_FILE_SYSTEM - && strncasecmp (base_name, text, text_len) == 0 -#else - && strncmp (base_name, text, text_len) == 0 -#endif - ) - add_filename_to_list (base_name, text, word, - &list, &list_used, &list_alloced); - } - } - } - - return list; -} - -/* Determine if PC is in the prologue of a function. The prologue is the area - between the first instruction of a function, and the first executable line. - Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. - - If non-zero, func_start is where we think the prologue starts, possibly - by previous examination of symbol table information. - */ - -int -in_prologue (CORE_ADDR pc, CORE_ADDR func_start) -{ - struct symtab_and_line sal; - CORE_ADDR func_addr, func_end; - - /* We have several sources of information we can consult to figure - this out. - - Compilers usually emit line number info that marks the prologue - as its own "source line". So the ending address of that "line" - is the end of the prologue. If available, this is the most - reliable method. - - The minimal symbols and partial symbols, which can usually tell - us the starting and ending addresses of a function. - - If we know the function's start address, we can call the - architecture-defined SKIP_PROLOGUE function to analyze the - instruction stream and guess where the prologue ends. - - Our `func_start' argument; if non-zero, this is the caller's - best guess as to the function's entry point. At the time of - this writing, handle_inferior_event doesn't get this right, so - it should be our last resort. */ - - /* Consult the partial symbol table, to find which function - the PC is in. */ - if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) - { - CORE_ADDR prologue_end; - - /* We don't even have minsym information, so fall back to using - func_start, if given. */ - if (! func_start) - return 1; /* We *might* be in a prologue. */ - - prologue_end = SKIP_PROLOGUE (func_start); - - return func_start <= pc && pc < prologue_end; - } - - /* If we have line number information for the function, that's - usually pretty reliable. */ - sal = find_pc_line (func_addr, 0); - - /* Now sal describes the source line at the function's entry point, - which (by convention) is the prologue. The end of that "line", - sal.end, is the end of the prologue. - - Note that, for functions whose source code is all on a single - line, the line number information doesn't always end up this way. - So we must verify that our purported end-of-prologue address is - *within* the function, not at its start or end. */ - if (sal.line == 0 - || sal.end <= func_addr - || func_end <= sal.end) - { - /* We don't have any good line number info, so use the minsym - information, together with the architecture-specific prologue - scanning code. */ - CORE_ADDR prologue_end = SKIP_PROLOGUE (func_addr); - - return func_addr <= pc && pc < prologue_end; - } - - /* We have line number info, and it looks good. */ - return func_addr <= pc && pc < sal.end; -} - - -/* Begin overload resolution functions */ -/* Helper routine for make_symbol_completion_list. */ - -static int sym_return_val_size; -static int sym_return_val_index; -static struct symbol **sym_return_val; - -/* Test to see if the symbol specified by SYMNAME (which is already - demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN - characters. If so, add it to the current completion list. */ - -static void -overload_list_add_symbol (struct symbol *sym, char *oload_name) -{ - int newsize; - int i; - - /* Get the demangled name without parameters */ - char *sym_name = cplus_demangle (SYMBOL_NAME (sym), DMGL_ARM | DMGL_ANSI); - if (!sym_name) - { - sym_name = (char *) xmalloc (strlen (SYMBOL_NAME (sym)) + 1); - strcpy (sym_name, SYMBOL_NAME (sym)); - } - - /* skip symbols that cannot match */ - if (strcmp (sym_name, oload_name) != 0) - { - xfree (sym_name); - return; - } - - /* If there is no type information, we can't do anything, so skip */ - if (SYMBOL_TYPE (sym) == NULL) - return; - - /* skip any symbols that we've already considered. */ - for (i = 0; i < sym_return_val_index; ++i) - if (!strcmp (SYMBOL_NAME (sym), SYMBOL_NAME (sym_return_val[i]))) - return; - - /* We have a match for an overload instance, so add SYM to the current list - * of overload instances */ - if (sym_return_val_index + 3 > sym_return_val_size) - { - newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *); - sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize); - } - sym_return_val[sym_return_val_index++] = sym; - sym_return_val[sym_return_val_index] = NULL; - - xfree (sym_name); -} - -/* Return a null-terminated list of pointers to function symbols that - * match name of the supplied symbol FSYM. - * This is used in finding all overloaded instances of a function name. - * This has been modified from make_symbol_completion_list. */ - - -struct symbol ** -make_symbol_overload_list (struct symbol *fsym) -{ - register struct symbol *sym; - register struct symtab *s; - register struct partial_symtab *ps; - register struct objfile *objfile; - register struct block *b, *surrounding_static_block = 0; - register int i; - /* The name we are completing on. */ - char *oload_name = NULL; - /* Length of name. */ - int oload_name_len = 0; - - /* Look for the symbol we are supposed to complete on. - * FIXME: This should be language-specific. */ - - oload_name = cplus_demangle (SYMBOL_NAME (fsym), DMGL_ARM | DMGL_ANSI); - if (!oload_name) - { - oload_name = (char *) xmalloc (strlen (SYMBOL_NAME (fsym)) + 1); - strcpy (oload_name, SYMBOL_NAME (fsym)); - } - oload_name_len = strlen (oload_name); - - sym_return_val_size = 100; - sym_return_val_index = 0; - sym_return_val = (struct symbol **) xmalloc ((sym_return_val_size + 1) * sizeof (struct symbol *)); - sym_return_val[0] = NULL; - - /* Look through the partial symtabs for all symbols which begin - by matching OLOAD_NAME. Make sure we read that symbol table in. */ - - ALL_PSYMTABS (objfile, ps) - { - struct partial_symbol **psym; - - /* If the psymtab's been read in we'll get it when we search - through the blockvector. */ - if (ps->readin) - continue; - - for (psym = objfile->global_psymbols.list + ps->globals_offset; - psym < (objfile->global_psymbols.list + ps->globals_offset - + ps->n_global_syms); - psym++) - { - /* If interrupted, then quit. */ - QUIT; - /* This will cause the symbol table to be read if it has not yet been */ - s = PSYMTAB_TO_SYMTAB (ps); - } - - for (psym = objfile->static_psymbols.list + ps->statics_offset; - psym < (objfile->static_psymbols.list + ps->statics_offset - + ps->n_static_syms); - psym++) - { - QUIT; - /* This will cause the symbol table to be read if it has not yet been */ - s = PSYMTAB_TO_SYMTAB (ps); - } - } - - /* Search upwards from currently selected frame (so that we can - complete on local vars. */ - - for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b)) - { - if (!BLOCK_SUPERBLOCK (b)) - { - surrounding_static_block = b; /* For elimination of dups */ - } - - /* Also catch fields of types defined in this places which match our - text string. Only complete on types visible from current context. */ - - ALL_BLOCK_SYMBOLS (b, i, sym) - { - overload_list_add_symbol (sym, oload_name); - } - } - - /* Go through the symtabs and check the externs and statics for - symbols which match. */ - - ALL_SYMTABS (objfile, s) - { - QUIT; - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); - ALL_BLOCK_SYMBOLS (b, i, sym) - { - overload_list_add_symbol (sym, oload_name); - } - } - - ALL_SYMTABS (objfile, s) - { - QUIT; - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); - /* Don't do this block twice. */ - if (b == surrounding_static_block) - continue; - ALL_BLOCK_SYMBOLS (b, i, sym) - { - overload_list_add_symbol (sym, oload_name); - } - } - - xfree (oload_name); - - return (sym_return_val); -} - -/* End of overload resolution functions */ - -struct symtabs_and_lines -decode_line_spec (char *string, int funfirstline) -{ - struct symtabs_and_lines sals; - if (string == 0) - error ("Empty line specification."); - sals = decode_line_1 (&string, funfirstline, - current_source_symtab, current_source_line, - (char ***) NULL); - if (*string) - error ("Junk at end of line specification: %s", string); - return sals; -} - -/* Track MAIN */ -static char *name_of_main; - -void -set_main_name (const char *name) -{ - if (name_of_main != NULL) - { - xfree (name_of_main); - name_of_main = NULL; - } - if (name != NULL) - { - name_of_main = xstrdup (name); - } -} - -char * -main_name (void) -{ - if (name_of_main != NULL) - return name_of_main; - else - return "main"; -} - - -void -_initialize_symtab (void) -{ - add_info ("variables", variables_info, - "All global and static variable names, or those matching REGEXP."); - if (dbx_commands) - add_com ("whereis", class_info, variables_info, - "All global and static variable names, or those matching REGEXP."); - - add_info ("functions", functions_info, - "All function names, or those matching REGEXP."); - - - /* FIXME: This command has at least the following problems: - 1. It prints builtin types (in a very strange and confusing fashion). - 2. It doesn't print right, e.g. with - typedef struct foo *FOO - type_print prints "FOO" when we want to make it (in this situation) - print "struct foo *". - I also think "ptype" or "whatis" is more likely to be useful (but if - there is much disagreement "info types" can be fixed). */ - add_info ("types", types_info, - "All type names, or those matching REGEXP."); - -#if 0 - add_info ("methods", methods_info, - "All method names, or those matching REGEXP::REGEXP.\n\ -If the class qualifier is omitted, it is assumed to be the current scope.\n\ -If the first REGEXP is omitted, then all methods matching the second REGEXP\n\ -are listed."); -#endif - add_info ("sources", sources_info, - "Source files in the program."); - - add_com ("rbreak", class_breakpoint, rbreak_command, - "Set a breakpoint for all functions matching REGEXP."); - - if (xdb_commands) - { - add_com ("lf", class_info, sources_info, "Source files in the program"); - add_com ("lg", class_info, variables_info, - "All global and static variable names, or those matching REGEXP."); - } - - /* Initialize the one built-in type that isn't language dependent... */ - builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0, - "<unknown type>", (struct objfile *) NULL); -} |