| /* Symbol table lookup for the GNU debugger, GDB. |
| Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
| 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 "gnu-regex.h" |
| #include "expression.h" |
| #include "language.h" |
| #include "demangle.h" |
| #include "inferior.h" |
| |
| #include "obstack.h" |
| |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #include "gdb_string.h" |
| #include "gdb_stat.h" |
| #include <ctype.h> |
| |
| /* Prototype for one function in parser-defs.h, |
| instead of including that entire file. */ |
| |
| extern char *find_template_name_end PARAMS ((char *)); |
| |
| /* Prototypes for local functions */ |
| |
| static int find_methods PARAMS ((struct type *, char *, struct symbol **)); |
| |
| static void completion_list_add_name PARAMS ((char *, char *, int, char *, |
| char *)); |
| |
| static void build_canonical_line_spec PARAMS ((struct symtab_and_line *, |
| char *, char ***)); |
| |
| static struct symtabs_and_lines decode_line_2 PARAMS ((struct symbol *[], |
| int, int, char ***)); |
| |
| static void rbreak_command PARAMS ((char *, int)); |
| |
| static void types_info PARAMS ((char *, int)); |
| |
| static void functions_info PARAMS ((char *, int)); |
| |
| static void variables_info PARAMS ((char *, int)); |
| |
| static void sources_info PARAMS ((char *, int)); |
| |
| static void output_source_filename PARAMS ((char *, int *)); |
| |
| char *operator_chars PARAMS ((char *, char **)); |
| |
| static int find_line_common PARAMS ((struct linetable *, int, int *)); |
| |
| static struct partial_symbol *lookup_partial_symbol PARAMS |
| ((struct partial_symtab *, const char *, |
| int, namespace_enum)); |
| |
| static struct partial_symbol *fixup_psymbol_section PARAMS ((struct |
| partial_symbol *, struct objfile *)); |
| |
| static struct symtab *lookup_symtab_1 PARAMS ((char *)); |
| |
| static void cplusplus_hint PARAMS ((char *)); |
| |
| static struct symbol *find_active_alias PARAMS ((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 PARAMS ((struct general_symbol_info *, |
| struct objfile *)); |
| |
| static int file_matches PARAMS ((char *, char **, int)); |
| |
| static void print_symbol_info PARAMS ((namespace_enum, |
| struct symtab *, struct symbol *, |
| int, char *)); |
| |
| static void print_msymbol_info PARAMS ((struct minimal_symbol *)); |
| |
| static void symtab_symbol_info PARAMS ((char *, namespace_enum, int)); |
| |
| static void overload_list_add_symbol PARAMS ((struct symbol * sym, |
| char *oload_name)); |
| |
| void _initialize_symtab PARAMS ((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; |
| |
| char no_symtab_msg[] = "No symbol table is loaded. Use the \"file\" command."; |
| |
| /* 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 (name) |
| 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. */ |
| |
| static struct symtab * |
| lookup_symtab_1 (name) |
| char *name; |
| { |
| register struct symtab *s; |
| register struct partial_symtab *ps; |
| register char *slash; |
| register struct objfile *objfile; |
| |
| got_symtab: |
| |
| /* First, search for an exact match */ |
| |
| ALL_SYMTABS (objfile, s) |
| if (STREQ (name, s->filename)) |
| return s; |
| |
| slash = strchr (name, '/'); |
| |
| /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
| |
| if (!slash) |
| ALL_SYMTABS (objfile, s) |
| { |
| char *p = s->filename; |
| char *tail = strrchr (p, '/'); |
| |
| if (tail) |
| p = tail + 1; |
| |
| if (STREQ (p, name)) |
| 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 symbol table of a source file named NAME. Try a couple |
| of variations if the first lookup doesn't work. */ |
| |
| struct symtab * |
| lookup_symtab (name) |
| char *name; |
| { |
| register struct symtab *s; |
| #if 0 |
| register char *copy; |
| #endif |
| |
| s = lookup_symtab_1 (name); |
| if (s) |
| return s; |
| |
| #if 0 |
| /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab |
| "tree.c". */ |
| |
| /* If name not found as specified, see if adding ".c" helps. */ |
| /* Why is this? Is it just a user convenience? (If so, it's pretty |
| questionable in the presence of C++, FORTRAN, etc.). It's not in |
| the GDB manual. */ |
| |
| copy = (char *) alloca (strlen (name) + 3); |
| strcpy (copy, name); |
| strcat (copy, ".c"); |
| s = lookup_symtab_1 (copy); |
| if (s) |
| return s; |
| #endif /* 0 */ |
| |
| /* We didn't find anything; die. */ |
| return 0; |
| } |
| |
| /* 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 (name) |
| char *name; |
| { |
| register struct partial_symtab *pst; |
| register struct objfile *objfile; |
| |
| ALL_PSYMTABS (objfile, pst) |
| { |
| if (STREQ (name, pst->filename)) |
| { |
| return (pst); |
| } |
| } |
| |
| /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
| |
| if (!strchr (name, '/')) |
| ALL_PSYMTABS (objfile, pst) |
| { |
| char *p = pst->filename; |
| char *tail = strrchr (p, '/'); |
| |
| if (tail) |
| p = tail + 1; |
| |
| if (STREQ (p, name)) |
| 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 (type, method_id, signature_id) |
| struct type *type; |
| int method_id, 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 = DESTRUCTOR_PREFIX_P (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)); |
| |
| is_full_physname_constructor = |
| ((physname[0] == '_' && physname[1] == '_' && |
| (isdigit (physname[2]) || physname[2] == 'Q' || physname[2] == 't')) |
| || (strncmp (physname, "__ct", 4) == 0)); |
| |
| 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); |
| |
| /* Only needed for GNU-mangled names. ANSI-mangled names |
| work with the normal mechanisms. */ |
| if (OPNAME_PREFIX_P (field_name)) |
| { |
| const char *opname = cplus_mangle_opname (field_name + 3, 0); |
| if (opname == NULL) |
| error ("No mangling for \"%s\"", field_name); |
| mangled_name_len += strlen (opname); |
| mangled_name = (char *) xmalloc (mangled_name_len); |
| |
| strncpy (mangled_name, field_name, 3); |
| mangled_name[3] = '\0'; |
| strcat (mangled_name, opname); |
| } |
| else |
| { |
| 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 (pc, section) |
| CORE_ADDR pc; |
| asection *section; |
| { |
| register struct partial_symtab *pst; |
| register struct objfile *objfile; |
| |
| ALL_PSYMTABS (objfile, pst) |
| { |
| if (pc >= pst->textlow && pc < pst->texthigh) |
| { |
| struct minimal_symbol *msymbol; |
| 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); |
| |
| msymbol = lookup_minimal_symbol_by_pc_section (pc, section); |
| 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 (pc) |
| 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 (psymtab, pc, section) |
| 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 (psymtab, pc) |
| 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 (ginfo, objfile) |
| 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); |
| } |
| |
| struct symbol * |
| fixup_symbol_section (sym, objfile) |
| struct symbol *sym; |
| struct objfile *objfile; |
| { |
| if (!sym) |
| return NULL; |
| |
| if (SYMBOL_BFD_SECTION (sym)) |
| return sym; |
| |
| fixup_section (&sym->ginfo, objfile); |
| |
| return sym; |
| } |
| |
| static struct partial_symbol * |
| fixup_psymbol_section (psym, objfile) |
| 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 (name, block, namespace, is_a_field_of_this, symtab) |
| const char *name; |
| register 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; |
| 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 (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 (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 (pst, name, global, namespace) |
| struct partial_symtab *pst; |
| const char *name; |
| int global; |
| namespace_enum namespace; |
| { |
| 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)) |
| abort (); |
| if (!do_linear_search |
| && (SYMBOL_LANGUAGE (*center) == language_cplus |
| || SYMBOL_LANGUAGE (*center) == language_java |
| )) |
| { |
| do_linear_search = 1; |
| } |
| if (STRCMP (SYMBOL_NAME (*center), name) >= 0) |
| { |
| top = center; |
| } |
| else |
| { |
| bottom = center + 1; |
| } |
| } |
| if (!(top == bottom)) |
| abort (); |
| while (STREQ (SYMBOL_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 (name) |
| 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 () |
| { |
| register struct partial_symtab *pst; |
| register struct objfile *objfile; |
| |
| ALL_PSYMTABS (objfile, pst) |
| { |
| if (lookup_partial_symbol (pst, "main", 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 (block, name, namespace) |
| 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, such as finding a C++ symbol during the binary search. |
| Note that for C++ modules, ALL the symbols in a block should |
| end up marked as C++ symbols. */ |
| |
| 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_cplus |
| || SYMBOL_LANGUAGE (sym) == language_java |
| )) |
| { |
| do_linear_search = 1; |
| } |
| if (SYMBOL_NAME (sym)[0] < name[0]) |
| { |
| bot = inc; |
| } |
| else if (SYMBOL_NAME (sym)[0] > name[0]) |
| { |
| top = inc; |
| } |
| else if (STRCMP (SYMBOL_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); |
| inc = SYMBOL_NAME (sym)[0] - name[0]; |
| if (inc == 0) |
| { |
| inc = STRCMP (SYMBOL_NAME (sym), name); |
| } |
| if (inc == 0 && SYMBOL_NAMESPACE (sym) == namespace) |
| { |
| return (sym); |
| } |
| if (inc > 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 C++ 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 (sym, addr) |
| 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 (bl) |
| 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 (pc, section) |
| 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; |
| |
| /* 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. */ |
| /* FIXME-32x64: assumes pc fits in a long */ |
| warning ("\ |
| (Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n", |
| (unsigned long) 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 (pc) |
| 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 (addr, symtabp, symaddrp) |
| 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 (pc, section, notcurrent) |
| 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 */ |
| |
| 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; |
| /* If another line is in the linetable, and its PC is closer |
| than the best_end we currently have, take it as best_end. */ |
| if (i < len && (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 (pc, notcurrent) |
| 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); |
| } |
| |
| |
| static struct symtab *find_line_symtab PARAMS ((struct symtab *, int, |
| int *, int *)); |
| |
| /* 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. */ |
| |
| static struct symtab * |
| find_line_symtab (symtab, line, index, exact_match) |
| 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 (symtab, 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 (sal, startptr, endptr) |
| struct symtab_and_line sal; |
| CORE_ADDR *startptr, *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 (l, lineno, exact_match) |
| 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 (pc, startptr, endptr) |
| CORE_ADDR pc; |
| CORE_ADDR *startptr, *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. */ |
| |
| static struct symtab_and_line |
| find_function_start_sal PARAMS ((struct symbol * sym, int)); |
| |
| static struct symtab_and_line |
| find_function_start_sal (sym, funfirstline) |
| 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 (p, end) |
| 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; |
| } |
| |
| switch (*p) |
| { |
| 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[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; |
| } |
| |
| /* Return the number of methods described for TYPE, including the |
| methods from types it derives from. This can't be done in the symbol |
| reader because the type of the baseclass might still be stubbed |
| when the definition of the derived class is parsed. */ |
| |
| static int total_number_of_methods PARAMS ((struct type * type)); |
| |
| static int |
| total_number_of_methods (type) |
| struct type *type; |
| { |
| int n; |
| int count; |
| |
| CHECK_TYPEDEF (type); |
| if (TYPE_CPLUS_SPECIFIC (type) == NULL) |
| return 0; |
| count = TYPE_NFN_FIELDS_TOTAL (type); |
| |
| for (n = 0; n < TYPE_N_BASECLASSES (type); n++) |
| count += total_number_of_methods (TYPE_BASECLASS (type, n)); |
| |
| return count; |
| } |
| |
| /* Recursive helper function for decode_line_1. |
| Look for methods named NAME in type T. |
| Return number of matches. |
| Put matches in SYM_ARR, which should have been allocated with |
| a size of total_number_of_methods (T) * sizeof (struct symbol *). |
| Note that this function is g++ specific. */ |
| |
| static int |
| find_methods (t, name, sym_arr) |
| struct type *t; |
| char *name; |
| struct symbol **sym_arr; |
| { |
| int i1 = 0; |
| int ibase; |
| struct symbol *sym_class; |
| char *class_name = type_name_no_tag (t); |
| |
| /* Ignore this class if it doesn't have a name. This is ugly, but |
| unless we figure out how to get the physname without the name of |
| the class, then the loop can't do any good. */ |
| if (class_name |
| && (sym_class = lookup_symbol (class_name, |
| (struct block *) NULL, |
| STRUCT_NAMESPACE, |
| (int *) NULL, |
| (struct symtab **) NULL))) |
| { |
| int method_counter; |
| |
| /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */ |
| t = SYMBOL_TYPE (sym_class); |
| |
| /* Loop over each method name. At this level, all overloads of a name |
| are counted as a single name. There is an inner loop which loops over |
| each overload. */ |
| |
| for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| method_counter >= 0; |
| --method_counter) |
| { |
| int field_counter; |
| char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| char dem_opname[64]; |
| |
| if (strncmp (method_name, "__", 2) == 0 || |
| strncmp (method_name, "op", 2) == 0 || |
| strncmp (method_name, "type", 4) == 0) |
| { |
| if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) |
| method_name = dem_opname; |
| else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
| method_name = dem_opname; |
| } |
| |
| if (STREQ (name, method_name)) |
| /* Find all the overloaded methods with that name. */ |
| for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; |
| field_counter >= 0; |
| --field_counter) |
| { |
| struct fn_field *f; |
| char *phys_name; |
| |
| f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| |
| if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| { |
| char *tmp_name; |
| |
| tmp_name = gdb_mangle_name (t, |
| method_counter, |
| field_counter); |
| phys_name = alloca (strlen (tmp_name) + 1); |
| strcpy (phys_name, tmp_name); |
| free (tmp_name); |
| } |
| else |
| phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| |
| /* Destructor is handled by caller, dont add it to the list */ |
| if (DESTRUCTOR_PREFIX_P (phys_name)) |
| continue; |
| |
| sym_arr[i1] = lookup_symbol (phys_name, |
| NULL, VAR_NAMESPACE, |
| (int *) NULL, |
| (struct symtab **) NULL); |
| if (sym_arr[i1]) |
| i1++; |
| else |
| { |
| /* This error message gets printed, but the method |
| still seems to be found |
| fputs_filtered("(Cannot find method ", gdb_stdout); |
| fprintf_symbol_filtered (gdb_stdout, phys_name, |
| language_cplus, |
| DMGL_PARAMS | DMGL_ANSI); |
| fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
| */ |
| } |
| } |
| } |
| } |
| |
| /* Only search baseclasses if there is no match yet, since names in |
| derived classes override those in baseclasses. |
| |
| FIXME: The above is not true; it is only true of member functions |
| if they have the same number of arguments (??? - section 13.1 of the |
| ARM says the function members are not in the same scope but doesn't |
| really spell out the rules in a way I understand. In any case, if |
| the number of arguments differ this is a case in which we can overload |
| rather than hiding without any problem, and gcc 2.4.5 does overload |
| rather than hiding in this case). */ |
| |
| if (i1 == 0) |
| for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); |
| |
| return i1; |
| } |
| |
| /* Helper function for decode_line_1. |
| Build a canonical line spec in CANONICAL if it is non-NULL and if |
| the SAL has a symtab. |
| If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
| If SYMNAME is NULL the line number from SAL is used and the canonical |
| line spec is `filename:linenum'. */ |
| |
| static void |
| build_canonical_line_spec (sal, symname, canonical) |
| struct symtab_and_line *sal; |
| char *symname; |
| char ***canonical; |
| { |
| char **canonical_arr; |
| char *canonical_name; |
| char *filename; |
| struct symtab *s = sal->symtab; |
| |
| if (s == (struct symtab *) NULL |
| || s->filename == (char *) NULL |
| || canonical == (char ***) NULL) |
| return; |
| |
| canonical_arr = (char **) xmalloc (sizeof (char *)); |
| *canonical = canonical_arr; |
| |
| filename = s->filename; |
| if (symname != NULL) |
| { |
| canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
| sprintf (canonical_name, "%s:%s", filename, symname); |
| } |
| else |
| { |
| canonical_name = xmalloc (strlen (filename) + 30); |
| sprintf (canonical_name, "%s:%d", filename, sal->line); |
| } |
| canonical_arr[0] = canonical_name; |
| } |
| |
| /* Parse a string that specifies a line number. |
| Pass the address of a char * variable; that variable will be |
| advanced over the characters actually parsed. |
| |
| The string can be: |
| |
| LINENUM -- that line number in current file. PC returned is 0. |
| FILE:LINENUM -- that line in that file. PC returned is 0. |
| FUNCTION -- line number of openbrace of that function. |
| PC returned is the start of the function. |
| VARIABLE -- line number of definition of that variable. |
| PC returned is 0. |
| FILE:FUNCTION -- likewise, but prefer functions in that file. |
| *EXPR -- line in which address EXPR appears. |
| |
| This may all be followed by an "if EXPR", which we ignore. |
| |
| FUNCTION may be an undebuggable function found in minimal symbol table. |
| |
| If the argument FUNFIRSTLINE is nonzero, we want the first line |
| of real code inside a function when a function is specified, and it is |
| not OK to specify a variable or type to get its line number. |
| |
| DEFAULT_SYMTAB specifies the file to use if none is specified. |
| It defaults to current_source_symtab. |
| DEFAULT_LINE specifies the line number to use for relative |
| line numbers (that start with signs). Defaults to current_source_line. |
| If CANONICAL is non-NULL, store an array of strings containing the canonical |
| line specs there if necessary. Currently overloaded member functions and |
| line numbers or static functions without a filename yield a canonical |
| line spec. The array and the line spec strings are allocated on the heap, |
| it is the callers responsibility to free them. |
| |
| Note that it is possible to return zero for the symtab |
| if no file is validly specified. Callers must check that. |
| Also, the line number returned may be invalid. */ |
| |
| /* We allow single quotes in various places. This is a hideous |
| kludge, which exists because the completer can't yet deal with the |
| lack of single quotes. FIXME: write a linespec_completer which we |
| can use as appropriate instead of make_symbol_completion_list. */ |
| |
| struct symtabs_and_lines |
| decode_line_1 (argptr, funfirstline, default_symtab, default_line, canonical) |
| char **argptr; |
| int funfirstline; |
| struct symtab *default_symtab; |
| int default_line; |
| char ***canonical; |
| { |
| struct symtabs_and_lines values; |
| #ifdef HPPA_COMPILER_BUG |
| /* FIXME: The native HP 9000/700 compiler has a bug which appears |
| when optimizing this file with target i960-vxworks. I haven't |
| been able to construct a simple test case. The problem is that |
| in the second call to SKIP_PROLOGUE below, the compiler somehow |
| does not realize that the statement val = find_pc_line (...) will |
| change the values of the fields of val. It extracts the elements |
| into registers at the top of the block, and does not update the |
| registers after the call to find_pc_line. You can check this by |
| inserting a printf at the end of find_pc_line to show what values |
| it is returning for val.pc and val.end and another printf after |
| the call to see what values the function actually got (remember, |
| this is compiling with cc -O, with this patch removed). You can |
| also examine the assembly listing: search for the second call to |
| skip_prologue; the LDO statement before the next call to |
| find_pc_line loads the address of the structure which |
| find_pc_line will return; if there is a LDW just before the LDO, |
| which fetches an element of the structure, then the compiler |
| still has the bug. |
| |
| Setting val to volatile avoids the problem. We must undef |
| volatile, because the HPPA native compiler does not define |
| __STDC__, although it does understand volatile, and so volatile |
| will have been defined away in defs.h. */ |
| #undef volatile |
| volatile struct symtab_and_line val; |
| #define volatile /*nothing */ |
| #else |
| struct symtab_and_line val; |
| #endif |
| register char *p, *p1; |
| char *q, *pp, *ii, *p2; |
| #if 0 |
| char *q1; |
| #endif |
| register struct symtab *s; |
| |
| register struct symbol *sym; |
| /* The symtab that SYM was found in. */ |
| struct symtab *sym_symtab; |
| |
| register CORE_ADDR pc; |
| register struct minimal_symbol *msymbol; |
| char *copy; |
| struct symbol *sym_class; |
| int i1; |
| int is_quoted; |
| int is_quote_enclosed; |
| int has_parens; |
| int has_if = 0; |
| int has_comma = 0; |
| struct symbol **sym_arr; |
| struct type *t; |
| char *saved_arg = *argptr; |
| extern char *gdb_completer_quote_characters; |
| |
| INIT_SAL (&val); /* initialize to zeroes */ |
| |
| /* Defaults have defaults. */ |
| |
| if (default_symtab == 0) |
| { |
| default_symtab = current_source_symtab; |
| default_line = current_source_line; |
| } |
| |
| /* See if arg is *PC */ |
| |
| if (**argptr == '*') |
| { |
| (*argptr)++; |
| pc = parse_and_eval_address_1 (argptr); |
| |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| |
| values.nelts = 1; |
| values.sals[0] = find_pc_line (pc, 0); |
| values.sals[0].pc = pc; |
| values.sals[0].section = find_pc_overlay (pc); |
| |
| return values; |
| } |
| |
| /* 'has_if' is for the syntax: |
| * (gdb) break foo if (a==b) |
| */ |
| if ((ii = strstr (*argptr, " if ")) != NULL || |
| (ii = strstr (*argptr, "\tif ")) != NULL || |
| (ii = strstr (*argptr, " if\t")) != NULL || |
| (ii = strstr (*argptr, "\tif\t")) != NULL || |
| (ii = strstr (*argptr, " if(")) != NULL || |
| (ii = strstr (*argptr, "\tif( ")) != NULL) |
| has_if = 1; |
| /* Temporarily zap out "if (condition)" to not |
| * confuse the parenthesis-checking code below. |
| * This is undone below. Do not change ii!! |
| */ |
| if (has_if) |
| { |
| *ii = '\0'; |
| } |
| |
| /* Set various flags. |
| * 'has_parens' is important for overload checking, where |
| * we allow things like: |
| * (gdb) break c::f(int) |
| */ |
| |
| /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ |
| |
| is_quoted = (**argptr |
| && strchr (gdb_completer_quote_characters, **argptr) != NULL); |
| |
| has_parens = ((pp = strchr (*argptr, '(')) != NULL |
| && (pp = strrchr (pp, ')')) != NULL); |
| |
| /* Now that we're safely past the has_parens check, |
| * put back " if (condition)" so outer layers can see it |
| */ |
| if (has_if) |
| *ii = ' '; |
| |
| /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
| and we must isolate the first half. Outer layers will call again later |
| for the second half */ |
| if ((ii = strchr (*argptr, ',')) != NULL) |
| has_comma = 1; |
| /* Temporarily zap out second half to not |
| * confuse the code below. |
| * This is undone below. Do not change ii!! |
| */ |
| if (has_comma) |
| { |
| *ii = '\0'; |
| } |
| |
| /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ |
| /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ |
| /* Look for ':', but ignore inside of <> */ |
| |
| s = NULL; |
| p = *argptr; |
| if (p[0] == '"') |
| { |
| is_quote_enclosed = 1; |
| p++; |
| } |
| else |
| is_quote_enclosed = 0; |
| for (; *p; p++) |
| { |
| if (p[0] == '<') |
| { |
| char *temp_end = find_template_name_end (p); |
| if (!temp_end) |
| error ("malformed template specification in command"); |
| p = temp_end; |
| } |
| /* Check for the end of the first half of the linespec. End of line, |
| a tab, a double colon or the last single colon, or a space. But |
| if enclosed in double quotes we do not break on enclosed spaces */ |
| if (!*p |
| || p[0] == '\t' |
| || ((p[0] == ':') |
| && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) |
| || ((p[0] == ' ') && !is_quote_enclosed)) |
| break; |
| if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ |
| { |
| /* Find the *last* '.', since the others are package qualifiers. */ |
| for (p1 = p; *p1; p1++) |
| { |
| if (*p1 == '.') |
| p = p1; |
| } |
| break; |
| } |
| } |
| while (p[0] == ' ' || p[0] == '\t') |
| p++; |
| /* if the closing double quote was left at the end, remove it */ |
| if (is_quote_enclosed && ((pp = strchr (p, '"')) != NULL)) |
| if (!*(pp + 1)) |
| *pp = '\0'; |
| |
| /* Now that we've safely parsed the first half, |
| * put back ',' so outer layers can see it |
| */ |
| if (has_comma) |
| *ii = ','; |
| |
| if ((p[0] == ':' || p[0] == '.') && !has_parens) |
| { |
| /* C++ */ |
| /* ... or Java */ |
| if (is_quoted) |
| *argptr = *argptr + 1; |
| if (p[0] == '.' || p[1] == ':') |
| { |
| char *saved_arg2 = *argptr; |
| char *temp_end; |
| /* First check for "global" namespace specification, |
| of the form "::foo". If found, skip over the colons |
| and jump to normal symbol processing */ |
| if ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t')) |
| saved_arg2 += 2; |
| |
| /* We have what looks like a class or namespace |
| scope specification (A::B), possibly with many |
| levels of namespaces or classes (A::B::C::D). |
| |
| Some versions of the HP ANSI C++ compiler (as also possibly |
| other compilers) generate class/function/member names with |
| embedded double-colons if they are inside namespaces. To |
| handle this, we loop a few times, considering larger and |
| larger prefixes of the string as though they were single |
| symbols. So, if the initially supplied string is |
| A::B::C::D::foo, we have to look up "A", then "A::B", |
| then "A::B::C", then "A::B::C::D", and finally |
| "A::B::C::D::foo" as single, monolithic symbols, because |
| A, B, C or D may be namespaces. |
| |
| Note that namespaces can nest only inside other |
| namespaces, and not inside classes. So we need only |
| consider *prefixes* of the string; there is no need to look up |
| "B::C" separately as a symbol in the previous example. */ |
| |
| p2 = p; /* save for restart */ |
| while (1) |
| { |
| /* Extract the class name. */ |
| p1 = p; |
| while (p != *argptr && p[-1] == ' ') |
| --p; |
| copy = (char *) alloca (p - *argptr + 1); |
| memcpy (copy, *argptr, p - *argptr); |
| copy[p - *argptr] = 0; |
| |
| /* Discard the class name from the arg. */ |
| p = p1 + (p1[0] == ':' ? 2 : 1); |
| while (*p == ' ' || *p == '\t') |
| p++; |
| *argptr = p; |
| |
| sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, |
| (struct symtab **) NULL); |
| |
| if (sym_class && |
| (t = check_typedef (SYMBOL_TYPE (sym_class)), |
| (TYPE_CODE (t) == TYPE_CODE_STRUCT |
| || TYPE_CODE (t) == TYPE_CODE_UNION))) |
| { |
| /* Arg token is not digits => try it as a function name |
| Find the next token(everything up to end or next blank). */ |
| if (**argptr |
| && strchr (gdb_completer_quote_characters, **argptr) != NULL) |
| { |
| p = skip_quoted (*argptr); |
| *argptr = *argptr + 1; |
| } |
| else |
| { |
| p = *argptr; |
| while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') |
| p++; |
| } |
| /* |
| q = operator_chars (*argptr, &q1); |
| if (q1 - q) |
| { |
| char *opname; |
| char *tmp = alloca (q1 - q + 1); |
| memcpy (tmp, q, q1 - q); |
| tmp[q1 - q] = '\0'; |
| opname = cplus_mangle_opname (tmp, DMGL_ANSI); |
| if (opname == NULL) |
| { |
| error_begin (); |
| printf_filtered ("no mangling for \"%s\"\n", tmp); |
| cplusplus_hint (saved_arg); |
| return_to_top_level (RETURN_ERROR); |
| } |
| copy = (char*) alloca (3 + strlen(opname)); |
| sprintf (copy, "__%s", opname); |
| p = q1; |
| } |
| else |
| */ |
| { |
| copy = (char *) alloca (p - *argptr + 1); |
| memcpy (copy, *argptr, p - *argptr); |
| copy[p - *argptr] = '\0'; |
| if (p != *argptr |
| && copy[p - *argptr - 1] |
| && strchr (gdb_completer_quote_characters, |
| copy[p - *argptr - 1]) != NULL) |
| copy[p - *argptr - 1] = '\0'; |
| } |
| |
| /* no line number may be specified */ |
| while (*p == ' ' || *p == '\t') |
| p++; |
| *argptr = p; |
| |
| sym = 0; |
| i1 = 0; /* counter for the symbol array */ |
| sym_arr = (struct symbol **) alloca (total_number_of_methods (t) |
| * sizeof (struct symbol *)); |
| |
| if (destructor_name_p (copy, t)) |
| { |
| /* Destructors are a special case. */ |
| int m_index, f_index; |
| |
| if (get_destructor_fn_field (t, &m_index, &f_index)) |
| { |
| struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); |
| |
| sym_arr[i1] = |
| lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), |
| NULL, VAR_NAMESPACE, (int *) NULL, |
| (struct symtab **) NULL); |
| if (sym_arr[i1]) |
| i1++; |
| } |
| } |
| else |
| i1 = find_methods (t, copy, sym_arr); |
| if (i1 == 1) |
| { |
| /* There is exactly one field with that name. */ |
| sym = sym_arr[0]; |
| |
| if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| { |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| values.nelts = 1; |
| values.sals[0] = find_function_start_sal (sym, |
| funfirstline); |
| } |
| else |
| { |
| values.nelts = 0; |
| } |
| return values; |
| } |
| if (i1 > 0) |
| { |
| /* There is more than one field with that name |
| (overloaded). Ask the user which one to use. */ |
| return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
| } |
| else |
| { |
| char *tmp; |
| |
| if (OPNAME_PREFIX_P (copy)) |
| { |
| tmp = (char *) alloca (strlen (copy + 3) + 9); |
| strcpy (tmp, "operator "); |
| strcat (tmp, copy + 3); |
| } |
| else |
| tmp = copy; |
| error_begin (); |
| if (tmp[0] == '~') |
| printf_filtered |
| ("the class `%s' does not have destructor defined\n", |
| SYMBOL_SOURCE_NAME (sym_class)); |
| else |
| printf_filtered |
| ("the class %s does not have any method named %s\n", |
| SYMBOL_SOURCE_NAME (sym_class), tmp); |
| cplusplus_hint (saved_arg); |
| return_to_top_level (RETURN_ERROR); |
| } |
| } |
| |
| /* Move pointer up to next possible class/namespace token */ |
| p = p2 + 1; /* restart with old value +1 */ |
| /* Move pointer ahead to next double-colon */ |
| while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
| { |
| if (p[0] == '<') |
| { |
| temp_end = find_template_name_end (p); |
| if (!temp_end) |
| error ("malformed template specification in command"); |
| p = temp_end; |
| } |
| else if ((p[0] == ':') && (p[1] == ':')) |
| break; /* found double-colon */ |
| else |
| p++; |
| } |
| |
| if (*p != ':') |
| break; /* out of the while (1) */ |
| |
| p2 = p; /* save restart for next time around */ |
| *argptr = saved_arg2; /* restore argptr */ |
| } /* while (1) */ |
| |
| /* Last chance attempt -- check entire name as a symbol */ |
| /* Use "copy" in preparation for jumping out of this block, |
| to be consistent with usage following the jump target */ |
| copy = (char *) alloca (p - saved_arg2 + 1); |
| memcpy (copy, saved_arg2, p - saved_arg2); |
| /* Note: if is_quoted should be true, we snuff out quote here anyway */ |
| copy[p - saved_arg2] = '\000'; |
| /* Set argptr to skip over the name */ |
| *argptr = (*p == '\'') ? p + 1 : p; |
| /* Look up entire name */ |
| sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| s = (struct symtab *) 0; |
| /* Prepare to jump: restore the " if (condition)" so outer layers see it */ |
| /* Symbol was found --> jump to normal symbol processing. |
| Code following "symbol_found" expects "copy" to have the |
| symbol name, "sym" to have the symbol pointer, "s" to be |
| a specified file's symtab, and sym_symtab to be the symbol's |
| symtab. */ |
| /* By jumping there we avoid falling through the FILE:LINE and |
| FILE:FUNC processing stuff below */ |
| if (sym) |
| goto symbol_found; |
| |
| /* Couldn't find any interpretation as classes/namespaces, so give up */ |
| error_begin (); |
| /* The quotes are important if copy is empty. */ |
| printf_filtered |
| ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy); |
| cplusplus_hint (saved_arg); |
| return_to_top_level (RETURN_ERROR); |
| } |
| /* end of C++ */ |
| |
| |
| /* Extract the file name. */ |
| p1 = p; |
| while (p != *argptr && p[-1] == ' ') |
| --p; |
| if ((*p == '"') && is_quote_enclosed) |
| --p; |
| copy = (char *) alloca (p - *argptr + 1); |
| if ((**argptr == '"') && is_quote_enclosed) |
| { |
| memcpy (copy, *argptr + 1, p - *argptr - 1); |
| /* It may have the ending quote right after the file name */ |
| if (copy[p - *argptr - 2] == '"') |
| copy[p - *argptr - 2] = 0; |
| else |
| copy[p - *argptr - 1] = 0; |
| } |
| else |
| { |
| memcpy (copy, *argptr, p - *argptr); |
| copy[p - *argptr] = 0; |
| } |
| |
| /* Find that file's data. */ |
| s = lookup_symtab (copy); |
| if (s == 0) |
| { |
| if (!have_full_symbols () && !have_partial_symbols ()) |
| error (no_symtab_msg); |
| error ("No source file named %s.", copy); |
| } |
| |
| /* Discard the file name from the arg. */ |
| p = p1 + 1; |
| while (*p == ' ' || *p == '\t') |
| p++; |
| *argptr = p; |
| } |
| #if 0 |
| /* No one really seems to know why this was added. It certainly |
| breaks the command line, though, whenever the passed |
| name is of the form ClassName::Method. This bit of code |
| singles out the class name, and if funfirstline is set (for |
| example, you are setting a breakpoint at this function), |
| you get an error. This did not occur with earlier |
| verions, so I am ifdef'ing this out. 3/29/99 */ |
| else |
| { |
| /* Check if what we have till now is a symbol name */ |
| |
| /* We may be looking at a template instantiation such |
| as "foo<int>". Check here whether we know about it, |
| instead of falling through to the code below which |
| handles ordinary function names, because that code |
| doesn't like seeing '<' and '>' in a name -- the |
| skip_quoted call doesn't go past them. So see if we |
| can figure it out right now. */ |
| |
| copy = (char *) alloca (p - *argptr + 1); |
| memcpy (copy, *argptr, p - *argptr); |
| copy[p - *argptr] = '\000'; |
| sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| if (sym) |
| { |
| /* Yes, we have a symbol; jump to symbol processing */ |
| /* Code after symbol_found expects S, SYM_SYMTAB, SYM, |
| and COPY to be set correctly */ |
| *argptr = (*p == '\'') ? p + 1 : p; |
| s = (struct symtab *) 0; |
| goto symbol_found; |
| } |
| /* Otherwise fall out from here and go to file/line spec |
| processing, etc. */ |
| } |
| #endif |
| |
| /* S is specified file's symtab, or 0 if no file specified. |
| arg no longer contains the file name. */ |
| |
| /* Check whether arg is all digits (and sign) */ |
| |
| q = *argptr; |
| if (*q == '-' || *q == '+') |
| q++; |
| while (*q >= '0' && *q <= '9') |
| q++; |
| |
| if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) |
| { |
| /* We found a token consisting of all digits -- at least one digit. */ |
| enum sign |
| { |
| none, plus, minus |
| } |
| sign = none; |
| |
| /* We might need a canonical line spec if no file was specified. */ |
| int need_canonical = (s == 0) ? 1 : 0; |
| |
| /* This is where we need to make sure that we have good defaults. |
| We must guarantee that this section of code is never executed |
| when we are called with just a function name, since |
| select_source_symtab calls us with such an argument */ |
| |
| if (s == 0 && default_symtab == 0) |
| { |
| select_source_symtab (0); |
| default_symtab = current_source_symtab; |
| default_line = current_source_line; |
| } |
| |
| if (**argptr == '+') |
| sign = plus, (*argptr)++; |
| else if (**argptr == '-') |
| sign = minus, (*argptr)++; |
| val.line = atoi (*argptr); |
| switch (sign) |
| { |
| case plus: |
| if (q == *argptr) |
| val.line = 5; |
| if (s == 0) |
| val.line = default_line + val.line; |
| break; |
| case minus: |
| if (q == *argptr) |
| val.line = 15; |
| if (s == 0) |
| val.line = default_line - val.line; |
| else |
| val.line = 1; |
| break; |
| case none: |
| break; /* No need to adjust val.line. */ |
| } |
| |
| while (*q == ' ' || *q == '\t') |
| q++; |
| *argptr = q; |
| if (s == 0) |
| s = default_symtab; |
| |
| /* It is possible that this source file has more than one symtab, |
| and that the new line number specification has moved us from the |
| default (in s) to a new one. */ |
| val.symtab = find_line_symtab (s, val.line, NULL, NULL); |
| if (val.symtab == 0) |
| val.symtab = s; |
| |
| val.pc = 0; |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| values.sals[0] = val; |
| values.nelts = 1; |
| if (need_canonical) |
| build_canonical_line_spec (values.sals, NULL, canonical); |
| return values; |
| } |
| |
| /* Arg token is not digits => try it as a variable name |
| Find the next token (everything up to end or next whitespace). */ |
| |
| if (**argptr == '$') /* May be a convenience variable */ |
| p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ |
| else if (is_quoted) |
| { |
| p = skip_quoted (*argptr); |
| if (p[-1] != '\'') |
| error ("Unmatched single quote."); |
| } |
| else if (has_parens) |
| { |
| p = pp + 1; |
| } |
| else |
| { |
| p = skip_quoted (*argptr); |
| } |
| |
| copy = (char *) alloca (p - *argptr + 1); |
| memcpy (copy, *argptr, p - *argptr); |
| copy[p - *argptr] = '\0'; |
| if (p != *argptr |
| && copy[0] |
| && copy[0] == copy[p - *argptr - 1] |
| && strchr (gdb_completer_quote_characters, copy[0]) != NULL) |
| { |
| copy[p - *argptr - 1] = '\0'; |
| copy++; |
| } |
| while (*p == ' ' || *p == '\t') |
| p++; |
| *argptr = p; |
| |
| /* If it starts with $: may be a legitimate variable or routine name |
| (e.g. HP-UX millicode routines such as $$dyncall), or it may |
| be history value, or it may be a convenience variable */ |
| |
| if (*copy == '$') |
| { |
| value_ptr valx; |
| int index = 0; |
| int need_canonical = 0; |
| |
| p = (copy[1] == '$') ? copy + 2 : copy + 1; |
| while (*p >= '0' && *p <= '9') |
| p++; |
| if (!*p) /* reached end of token without hitting non-digit */ |
| { |
| /* We have a value history reference */ |
| sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
| valx = access_value_history ((copy[1] == '$') ? -index : index); |
| if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) |
| error ("History values used in line specs must have integer values."); |
| } |
| else |
| { |
| /* Not all digits -- may be user variable/function or a |
| convenience variable */ |
| |
| /* Look up entire name as a symbol first */ |
| sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
| s = (struct symtab *) 0; |
| need_canonical = 1; |
| /* Symbol was found --> jump to normal symbol processing. |
| Code following "symbol_found" expects "copy" to have the |
| symbol name, "sym" to have the symbol pointer, "s" to be |
| a specified file's symtab, and sym_symtab to be the symbol's |
| symtab. */ |
| if (sym) |
| goto symbol_found; |
| |
| /* If symbol was not found, look in minimal symbol tables */ |
| msymbol = lookup_minimal_symbol (copy, 0, 0); |
| /* Min symbol was found --> jump to minsym processing. */ |
| if (msymbol) |
| goto minimal_symbol_found; |
| |
| /* Not a user variable or function -- must be convenience variable */ |
| need_canonical = (s == 0) ? 1 : 0; |
| valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
| if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) |
| error ("Convenience variables used in line specs must have integer values."); |
| } |
| |
| /* Either history value or convenience value from above, in valx */ |
| val.symtab = s ? s : default_symtab; |
| val.line = value_as_long (valx); |
| val.pc = 0; |
| |
| values.sals = (struct symtab_and_line *) xmalloc (sizeof val); |
| values.sals[0] = val; |
| values.nelts = 1; |
| |
| if (need_canonical) |
| build_canonical_line_spec (values.sals, NULL, canonical); |
| |
| return values; |
| } |
| |
| |
| /* Look up that token as a variable. |
| If file specified, use that file's per-file block to start with. */ |
| |
| sym = lookup_symbol (copy, |
| (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) |
| : get_selected_block ()), |
| VAR_NAMESPACE, 0, &sym_symtab); |
| |
| symbol_found: /* We also jump here from inside the C++ class/namespace |
| code on finding a symbol of the form "A::B::C" */ |
| |
| if (sym != NULL) |
| { |
| if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| { |
| /* Arg is the name of a function */ |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| values.sals[0] = find_function_start_sal (sym, funfirstline); |
| values.nelts = 1; |
| |
| /* Don't use the SYMBOL_LINE; if used at all it points to |
| the line containing the parameters or thereabouts, not |
| the first line of code. */ |
| |
| /* We might need a canonical line spec if it is a static |
| function. */ |
| if (s == 0) |
| { |
| struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
| struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL) |
| build_canonical_line_spec (values.sals, copy, canonical); |
| } |
| return values; |
| } |
| else |
| { |
| if (funfirstline) |
| error ("\"%s\" is not a function", copy); |
| else if (SYMBOL_LINE (sym) != 0) |
| { |
| /* We know its line number. */ |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| values.nelts = 1; |
| memset (&values.sals[0], 0, sizeof (values.sals[0])); |
| values.sals[0].symtab = sym_symtab; |
| values.sals[0].line = SYMBOL_LINE (sym); |
| return values; |
| } |
| else |
| /* This can happen if it is compiled with a compiler which doesn't |
| put out line numbers for variables. */ |
| /* FIXME: Shouldn't we just set .line and .symtab to zero |
| and return? For example, "info line foo" could print |
| the address. */ |
| error ("Line number not known for symbol \"%s\"", copy); |
| } |
| } |
| |
| msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
| |
| minimal_symbol_found: /* We also jump here from the case for variables |
| that begin with '$' */ |
| |
| if (msymbol != NULL) |
| { |
| values.sals = (struct symtab_and_line *) |
| xmalloc (sizeof (struct symtab_and_line)); |
| values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), |
| (struct sec *) 0, 0); |
| values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); |
| if (funfirstline) |
| { |
| values.sals[0].pc += FUNCTION_START_OFFSET; |
| values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); |
| } |
| values.nelts = 1; |
| return values; |
| } |
| |
| if (!have_full_symbols () && |
| !have_partial_symbols () && !have_minimal_symbols ()) |
| error (no_symtab_msg); |
| |
| error ("Function \"%s\" not defined.", copy); |
| return values; /* for lint */ |
| } |
| |
| struct symtabs_and_lines |
| decode_line_spec (string, funfirstline) |
| 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; |
| } |
| |
| /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
| operate on (ask user if necessary). |
| If CANONICAL is non-NULL return a corresponding array of mangled names |
| as canonical line specs there. */ |
| |
| static struct symtabs_and_lines |
| decode_line_2 (sym_arr, nelts, funfirstline, canonical) |
| struct symbol *sym_arr[]; |
| int nelts; |
| int funfirstline; |
| char ***canonical; |
| { |
| struct symtabs_and_lines values, return_values; |
| char *args, *arg1; |
| int i; |
| char *prompt; |
| char *symname; |
| struct cleanup *old_chain; |
| char **canonical_arr = (char **) NULL; |
| |
| values.sals = (struct symtab_and_line *) |
| alloca (nelts * sizeof (struct symtab_and_line)); |
| return_values.sals = (struct symtab_and_line *) |
| xmalloc (nelts * sizeof (struct symtab_and_line)); |
| old_chain = make_cleanup (free, return_values.sals); |
| |
| if (canonical) |
| { |
| canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
| make_cleanup (free, canonical_arr); |
| memset (canonical_arr, 0, nelts * sizeof (char *)); |
| *canonical = canonical_arr; |
| } |
| |
| i = 0; |
| printf_unfiltered ("[0] cancel\n[1] all\n"); |
| while (i < nelts) |
| { |
| INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ |
| INIT_SAL (&values.sals[i]); |
| if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
| { |
| values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
| printf_unfiltered ("[%d] %s at %s:%d\n", |
| (i + 2), |
| SYMBOL_SOURCE_NAME (sym_arr[i]), |
| values.sals[i].symtab->filename, |
| values.sals[i].line); |
| } |
| else |
| printf_unfiltered ("?HERE\n"); |
| i++; |
| } |
| |
| if ((prompt = getenv ("PS2")) == NULL) |
| { |
| prompt = "> "; |
| } |
| args = command_line_input (prompt, 0, "overload-choice"); |
| |
| if (args == 0 || *args == 0) |
| error_no_arg ("one or more choice numbers"); |
| |
| i = 0; |
| while (*args) |
| { |
| int num; |
| |
| arg1 = args; |
| while (*arg1 >= '0' && *arg1 <= '9') |
| arg1++; |
| if (*arg1 && *arg1 != ' ' && *arg1 != '\t') |
| error ("Arguments must be choice numbers."); |
| |
| num = atoi (args); |
| |
| if (num == 0) |
| error ("cancelled"); |
| else if (num == 1) |
| { |
| if (canonical_arr) |
| { |
| for (i = 0; i < nelts; i++) |
| { |
| if (canonical_arr[i] == NULL) |
| { |
| symname = SYMBOL_NAME (sym_arr[i]); |
| canonical_arr[i] = savestring (symname, strlen (symname)); |
| } |
| } |
| } |
| memcpy (return_values.sals, values.sals, |
| (nelts * sizeof (struct symtab_and_line))); |
| return_values.nelts = nelts; |
| discard_cleanups (old_chain); |
| return return_values; |
| } |
| |
| if (num >= nelts + 2) |
| { |
| printf_unfiltered ("No choice number %d.\n", num); |
| } |
| else |
| { |
| num -= 2; |
| if (values.sals[num].pc) |
| { |
| if (canonical_arr) |
| { |
| symname = SYMBOL_NAME (sym_arr[num]); |
| make_cleanup (free, symname); |
| canonical_arr[i] = savestring (symname, strlen (symname)); |
| } |
| return_values.sals[i++] = values.sals[num]; |
| values.sals[num].pc = 0; |
| } |
| else |
| { |
| printf_unfiltered ("duplicate request for %d ignored.\n", num); |
| } |
| } |
| |
| args = arg1; |
| while (*args == ' ' || *args == '\t') |
| args++; |
| } |
| return_values.nelts = i; |
| discard_cleanups (old_chain); |
| return return_values; |
| } |
| |
| |
| /* 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 (name, first) |
| char *name; |
| int *first; |
| { |
| /* Table of files printed so far. 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. */ |
| static 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; |
| |
| char **p; |
| |
| if (*first) |
| { |
| if (tab == NULL) |
| tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
| tab_cur_size = 0; |
| } |
| |
| /* Is NAME in tab? */ |
| for (p = tab; p < tab + tab_cur_size; p++) |
| if (STREQ (*p, name)) |
| /* Yes; don't print it again. */ |
| return; |
| /* No; add it to tab. */ |
| if (tab_cur_size == tab_alloc_size) |
| { |
| tab_alloc_size *= 2; |
| tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab)); |
| } |
| tab[tab_cur_size++] = name; |
| |
| if (*first) |
| { |
| *first = 0; |
| } |
| else |
| { |
| printf_filtered (", "); |
| } |
| |
| wrap_here (""); |
| fputs_filtered (name, gdb_stdout); |
| } |
| |
| static void |
| sources_info (ignore, from_tty) |
| 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_symtab_msg); |
| } |
| |
| 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 (file, files, nfiles) |
| char *file; |
| char *files[]; |
| int nfiles; |
| { |
| int i; |
| |
| if (file != NULL && nfiles != 0) |
| { |
| for (i = 0; i < nfiles; i++) |
| { |
| if (strcmp (files[i], basename (file)) == 0) |
| return 1; |
| } |
| } |
| else if (nfiles == 0) |
| return 1; |
| return 0; |
| } |
| |
| /* Free any memory associated with a search. */ |
| void |
| free_search_symbols (symbols) |
| struct symbol_search *symbols; |
| { |
| struct symbol_search *p; |
| struct symbol_search *next; |
| |
| for (p = symbols; p != NULL; p = next) |
| { |
| next = p->next; |
| free (p); |
| } |
| } |
| |
| /* 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 (regexp, kind, nfiles, files, matches) |
| 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 < LABEL_NAMESPACE) |
| error ("must search on specific namespace"); |
| |
| ourtype = types[(int) (kind - LABEL_NAMESPACE)]; |
| ourtype2 = types2[(int) (kind - LABEL_NAMESPACE)]; |
| ourtype3 = types3[(int) (kind - LABEL_NAMESPACE)]; |
| ourtype4 = types4[(int) (kind - LABEL_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 (opend - opname + 10); |
| 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 ((make_cleanup_func) |
| 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 ((make_cleanup_func) |
| 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 (kind, s, sym, block, last) |
| 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) |
| c_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); |
| free (demangled_name); |
| } |
| #endif |
| } |
| } |
| |
| /* This help function for symtab_symbol_info() prints information |
| for non-debugging symbols to gdb_stdout. |
| */ |
| static void |
| print_msymbol_info (msymbol) |
| struct minimal_symbol *msymbol; |
| { |
| printf_filtered (" %08lx %s\n", |
| (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol), |
| 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 (regexp, kind, from_tty) |
| 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 ((make_cleanup_func) free_search_symbols, symbols); |
| |
| printf_filtered (regexp |
| ? "All %ss matching regular expression \"%s\":\n" |
| : "All defined %ss:\n", |
| classnames[(int) (kind - LABEL_NAMESPACE - 1)], 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 (regexp, from_tty) |
| char *regexp; |
| int from_tty; |
| { |
| symtab_symbol_info (regexp, VARIABLES_NAMESPACE, from_tty); |
| } |
| |
| static void |
| functions_info (regexp, from_tty) |
| char *regexp; |
| int from_tty; |
| { |
| symtab_symbol_info (regexp, FUNCTIONS_NAMESPACE, from_tty); |
| } |
| |
| static void |
| types_info (regexp, from_tty) |
| 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 (regexp) |
| char *regexp; |
| { |
| symtab_symbol_info (regexp, METHODS_NAMESPACE, 0, from_tty); |
| } |
| #endif /* 0 */ |
| |
| /* Breakpoint all functions matching regular expression. */ |
| static void |
| rbreak_command (regexp, from_tty) |
| 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 ((make_cleanup_func) 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 (a, b) |
| struct block *a, *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 (symname, sym_text, sym_text_len, text, word) |
| 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; |
| } |
| |
| /* Clip any symbol names that we've already considered. (This is a |
| time optimization) */ |
| |
| for (i = 0; i < return_val_index; ++i) |
| { |
| if (STREQ (symname, return_val[i])) |
| { |
| 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); |
| } |
| |
| /* Recheck for duplicates if we intend to add a modified symbol. */ |
| if (word != sym_text) |
| { |
| for (i = 0; i < return_val_index; ++i) |
| { |
| if (STREQ (new, return_val[i])) |
| { |
| free (new); |
| return; |
| } |
| } |
| } |
| |
| 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 (text, word) |
| 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 NULL; |
| 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. */ |
| |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| 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); |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| 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; |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
| } |
| } |
| |
| return (return_val); |
| } |
| |
| /* 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 (pc, func_start) |
| CORE_ADDR pc; |
| CORE_ADDR func_start; |
| { |
| struct symtab_and_line sal; |
| CORE_ADDR func_addr, func_end; |
| |
| if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) |
| goto nosyms; /* Might be in prologue */ |
| |
| sal = find_pc_line (func_addr, 0); |
| |
| if (sal.line == 0) |
| goto nosyms; |
| |
| /* sal.end is the address of the first instruction past sal.line. */ |
| if (sal.end > func_addr |
| && sal.end <= func_end) /* Is prologue in function? */ |
| return pc < sal.end; /* Yes, is pc in prologue? */ |
| |
| /* The line after the prologue seems to be outside the function. In this |
| case, tell the caller to find the prologue the hard way. */ |
| |
| return 1; |
| |
| /* Come here when symtabs don't contain line # info. In this case, it is |
| likely that the user has stepped into a library function w/o symbols, or |
| is doing a stepi/nexti through code without symbols. */ |
| |
| nosyms: |
| |
| /* If func_start is zero (meaning unknown) then we don't know whether pc is |
| in the prologue or not. I.E. it might be. */ |
| |
| if (!func_start) |
| return 1; |
| |
| /* We need to call the target-specific prologue skipping functions with the |
| function's start address because PC may be pointing at an instruction that |
| could be mistakenly considered part of the prologue. */ |
| |
| func_start = SKIP_PROLOGUE (func_start); |
| |
| return pc < func_start; |
| } |
| |
| |
| /* 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 (sym, oload_name) |
| 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) |
| { |
| free (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; |
| |
| free (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 (fsym) |
| struct symbol *fsym; |
| { |
| register struct symbol *sym; |
| register struct symtab *s; |
| register struct partial_symtab *ps; |
| register struct objfile *objfile; |
| register struct minimal_symbol *msymbol; |
| 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. */ |
| |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| 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); |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| 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; |
| for (i = 0; i < BLOCK_NSYMS (b); i++) |
| { |
| sym = BLOCK_SYM (b, i); |
| overload_list_add_symbol (sym, oload_name); |
| } |
| } |
| |
| free (oload_name); |
| |
| return (sym_return_val); |
| } |
| |
| /* End of overload resolution functions */ |
| |
| |
| void |
| _initialize_symtab () |
| { |
| 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); |
| } |