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Diffstat (limited to 'contrib/gdb/gdb/symtab.c')
| -rw-r--r-- | contrib/gdb/gdb/symtab.c | 3346 |
1 files changed, 3346 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/symtab.c b/contrib/gdb/gdb/symtab.c new file mode 100644 index 0000000..41605bc --- /dev/null +++ b/contrib/gdb/gdb/symtab.c @@ -0,0 +1,3346 @@ +/* Symbol table lookup for the GNU debugger, GDB. + Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 + 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 "obstack.h" + +#include <sys/types.h> +#include <fcntl.h> +#include "gdb_string.h" +#include "gdb_stat.h" +#include <ctype.h> + +/* Prototypes for local functions */ + +extern 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 +list_symbols PARAMS ((char *, int, int, int)); + +static void +output_source_filename PARAMS ((char *, int *)); + +static 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 symtab * +lookup_symtab_1 PARAMS ((char *)); + +/* */ + +/* 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 */ + +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); +} + +/* Demangle a GDB method stub type. + Note that this function is g++ specific. */ + +char * +gdb_mangle_name (type, i, j) + struct type *type; + int i, j; +{ + int mangled_name_len; + char *mangled_name; + struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i); + struct fn_field *method = &f[j]; + char *field_name = TYPE_FN_FIELDLIST_NAME (type, i); + char *physname = TYPE_FN_FIELD_PHYSNAME (f, j); + 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); + if (strcmp(buf, "__") == 0) + buf[0] = '\0'; + } + else if (newname != NULL && strchr (newname, '<') != NULL) + { + /* Template methods are fully mangled. */ + 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. Return 0 if none. */ + +struct partial_symtab * +find_pc_psymtab (pc) + register CORE_ADDR pc; +{ + 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)) + return (pst); + + msymbol = lookup_minimal_symbol_by_pc (pc); + 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_psymbol (tpst, pc); + if (p != NULL + && SYMBOL_VALUE_ADDRESS(p) + == SYMBOL_VALUE_ADDRESS (msymbol)) + return (tpst); + } + } + return (pst); + } + } + return (NULL); +} + +/* Find which partial symbol within a psymtab contains PC. Return 0 + if none. Check all psymtabs if PSYMTAB is 0. */ +struct partial_symbol * +find_pc_psymbol (psymtab, pc) + struct partial_symtab *psymtab; + CORE_ADDR pc; +{ + struct partial_symbol *best = NULL, *p, **pp; + CORE_ADDR best_pc; + + if (!psymtab) + psymtab = find_pc_psymtab (pc); + if (!psymtab) + return 0; + + best_pc = psymtab->textlow - 1; + + /* 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) + { + 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) + { + best_pc = SYMBOL_VALUE_ADDRESS (p); + best = p; + } + } + if (best_pc == psymtab->textlow - 1) + return 0; + return best; +} + + +/* 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; + 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 (sym); + } + 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. */ + 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 sym; + } + } + } + } + + + /* 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 0; + } + } + + /* Now search all global blocks. Do the symtab's first, then + check the psymtab's */ + + 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 sym; + } + } + + /* 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_symtab (SYMBOL_VALUE_ADDRESS (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 sym; + } + 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. */ + } + } + + 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) + error ("Internal: global symbol `%s' found in %s psymtab but not in symtab", name, ps->filename); + if (symtab != NULL) + *symtab = s; + return sym; + } + } + + /* Now search all per-file blocks. + Not strictly correct, but more useful than an error. + Do the symtabs first, then check the psymtabs */ + + 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 sym; + } + } + + 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) + error ("Internal: static symbol `%s' found in %s psymtab but not in symtab", name, ps->filename); + if (symtab != NULL) + *symtab = s; + return sym; + } + } + + 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) + { + 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); +} + +/* 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) + { + 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)) + { + 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. */ +} + + +/* 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. Look through the psymtabs and read in + another symtab if necessary. */ + +struct symtab * +find_pc_symtab (pc) + register CORE_ADDR pc; +{ + 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; + int 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. */ + if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) + { + ps = find_pc_psymtab (pc); + if (ps) + s = PSYMTAB_TO_SYMTAB (ps); + else + s = NULL; + return (s); + } + distance = BLOCK_END (b) - BLOCK_START (b); + best_s = s; + } + } + + if (best_s != NULL) + return(best_s); + + s = NULL; + ps = find_pc_psymtab (pc); + 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); +} + +#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_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. + 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_line (pc, notcurrent) + CORE_ADDR pc; + 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; + + /* 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. */ + + if (notcurrent) pc -= 1; + + s = find_pc_symtab (pc); + if (!s) + { + val.symtab = 0; + val.line = 0; + val.pc = pc; + val.end = 0; + 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++) + { + /* Return the last line that did not start after 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.symtab = 0; + val.line = 0; + val.pc = pc; + val.end = 0; + } + 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)); + } + return val; +} + +static int find_line_symtab PARAMS ((struct symtab *, int, struct linetable **, + int *, int *)); + +/* Find line number LINE in any symtab whose name is the same as + SYMTAB. + + If found, return 1, set *LINETABLE to 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 0. */ + +static int +find_line_symtab (symtab, line, linetable, index, exact_match) + struct symtab *symtab; + int line; + struct linetable **linetable; + 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; + + /* First try looking it up in the given symtab. */ + best_linetable = LINETABLE (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; + goto done; + } + if (best == 0 || l->item[ind].line < best) + { + best = l->item[ind].line; + best_index = ind; + best_linetable = l; + } + } + } + } + done: + if (best_index < 0) + return 0; + + if (index) + *index = best_index; + if (linetable) + *linetable = best_linetable; + if (exact_match) + *exact_match = exact; + return 1; +} + +/* Find the PC value for a given source file and line number. + Returns zero for invalid line number. + The source file is specified with a struct symtab. */ + +CORE_ADDR +find_line_pc (symtab, line) + struct symtab *symtab; + int line; +{ + struct linetable *l; + int ind; + + if (symtab == 0) + return 0; + if (find_line_symtab (symtab, line, &l, &ind, NULL)) + return l->item[ind].pc; + 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) + { + startaddr = find_line_pc (sal.symtab, sal.line); + } + if (startaddr == 0) + 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_line (startaddr, 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)); + if (funfirstline) + { + pc += FUNCTION_START_OFFSET; + SKIP_PROLOGUE (pc); + } + sal = find_pc_line (pc, 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_line (pc, 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 "". */ +static 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); + 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. */ + +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); + for (method_counter = TYPE_NFN_FIELDS (t) - 1; + method_counter >= 0; + --method_counter) + { + int field_counter; + struct fn_field *f = TYPE_FN_FIELDLIST1 (t, method_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 fields with that name. */ + for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; + field_counter >= 0; + --field_counter) + { + char *phys_name; + if (TYPE_FN_FIELD_STUB (f, field_counter)) + check_stub_method (t, method_counter, field_counter); + 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; + + /* FIXME: Why are we looking this up in the + SYMBOL_BLOCK_VALUE (sym_class)? It is intended as a hook + for nested types? If so, it should probably hook to the + type, not the symbol. mipsread.c is the only symbol + reader which sets the SYMBOL_BLOCK_VALUE for types, and + this is not documented in symtab.h. -26Aug93. */ + + sym_arr[i1] = lookup_symbol (phys_name, + SYMBOL_BLOCK_VALUE (sym_class), + VAR_NAMESPACE, + (int *) NULL, + (struct symtab **) NULL); + if (sym_arr[i1]) i1++; + else + { + 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) + return i1; + 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. + + 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; +#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, has_parens; + struct symbol **sym_arr; + struct type *t; + char *saved_arg = *argptr; + extern char *gdb_completer_quote_characters; + + /* 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; + return values; + } + + /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ + + s = NULL; + is_quoted = (**argptr + && strchr (gdb_completer_quote_characters, **argptr) != NULL); + has_parens = ((pp = strchr (*argptr, '(')) != NULL + && (pp = strchr (pp, ')')) != NULL); + + for (p = *argptr; *p; p++) + { + if (p[0] == '<') + { + while(++p && *p != '>'); + if (!p) + { + error ("non-matching '<' and '>' in command"); + } + } + if (p[0] == ':' || p[0] == ' ' || p[0] == '\t') + break; + } + while (p[0] == ' ' || p[0] == '\t') p++; + + if ((p[0] == ':') && !has_parens) + { + + /* C++ */ + if (is_quoted) *argptr = *argptr+1; + if (p[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 + 2; + 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 *)); + + /* Cfront objects don't have fieldlists. */ + if (destructor_name_p (copy, t) && TYPE_FN_FIELDLISTS (t) != NULL) + { + /* destructors are a special case. */ + struct fn_field *f = TYPE_FN_FIELDLIST1 (t, 0); + int len = TYPE_FN_FIELDLIST_LENGTH (t, 0) - 1; + /* gcc 1.x puts destructor in last field, + gcc 2.x puts destructor in first field. */ + char *phys_name = TYPE_FN_FIELD_PHYSNAME (f, len); + if (!DESTRUCTOR_PREFIX_P (phys_name)) + { + phys_name = TYPE_FN_FIELD_PHYSNAME (f, 0); + if (!DESTRUCTOR_PREFIX_P (phys_name)) + phys_name = ""; + } + sym_arr[i1] = + lookup_symbol (phys_name, SYMBOL_BLOCK_VALUE (sym_class), + VAR_NAMESPACE, 0, (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); + } + } + else + { + error_begin (); + /* The quotes are important if copy is empty. */ + printf_filtered + ("can't find 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; + copy = (char *) alloca (p - *argptr + 1); + 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; + } + + /* 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; + 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 == '$') /* Convenience variable */ + p = skip_quoted (*argptr + 1); + 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; + + /* See if it's a convenience variable */ + + if (*copy == '$') + { + value_ptr valx; + int 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."); + + 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); + + 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); + if (msymbol != NULL) + { + val.symtab = 0; + val.line = 0; + val.pc = SYMBOL_VALUE_ADDRESS (msymbol); + if (funfirstline) + { + val.pc += FUNCTION_START_OFFSET; + SKIP_PROLOGUE (val.pc); + } + values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line)); + values.sals[0] = val; + 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) + { + 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 = ">"; + } + printf_unfiltered("%s ",prompt); + gdb_flush(gdb_stdout); + + args = command_line_input ((char *) NULL, 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"); +} + +/* List all symbols (if REGEXP is NULL) or all symbols matching REGEXP. + If CLASS is zero, list all symbols except functions, type names, and + constants (enums). + If CLASS is 1, list only functions. + If CLASS is 2, list only type names. + If CLASS is 3, list only method names. + + BPT is non-zero if we should set a breakpoint at the functions + we find. */ + +static void +list_symbols (regexp, class, bpt, from_tty) + char *regexp; + int class; + int bpt; + int from_tty; +{ + 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, j; + register struct symbol *sym; + struct partial_symbol **psym; + struct objfile *objfile; + struct minimal_symbol *msymbol; + char *val; + static char *classnames[] + = {"variable", "function", "type", "method"}; + int found_in_file = 0; + 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 = types[class]; + enum minimal_symbol_type ourtype2 = types2[class]; + enum minimal_symbol_type ourtype3 = types3[class]; + enum minimal_symbol_type ourtype4 = types4[class]; + + 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 ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym)) + && ((class == 0 && SYMBOL_CLASS (*psym) != LOC_TYPEDEF + && SYMBOL_CLASS (*psym) != LOC_BLOCK) + || (class == 1 && SYMBOL_CLASS (*psym) == LOC_BLOCK) + || (class == 2 && SYMBOL_CLASS (*psym) == LOC_TYPEDEF) + || (class == 3 && 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 (class == 0 || class == 1) + { + 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 (class == 1 + || lookup_symbol (SYMBOL_NAME (msymbol), + (struct block *) NULL, + VAR_NAMESPACE, + 0, (struct symtab **) NULL) == NULL) + found_misc = 1; + } + } + } + } + } + + /* Printout here so as to get after the "Reading in symbols" + messages which will be generated above. */ + if (!bpt) + printf_filtered (regexp + ? "All %ss matching regular expression \"%s\":\n" + : "All defined %ss:\n", + classnames[class], + regexp); + + ALL_SYMTABS (objfile, s) + { + found_in_file = 0; + 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 ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym)) + && ((class == 0 && SYMBOL_CLASS (sym) != LOC_TYPEDEF + && SYMBOL_CLASS (sym) != LOC_BLOCK + && SYMBOL_CLASS (sym) != LOC_CONST) + || (class == 1 && SYMBOL_CLASS (sym) == LOC_BLOCK) + || (class == 2 && SYMBOL_CLASS (sym) == LOC_TYPEDEF) + || (class == 3 && SYMBOL_CLASS (sym) == LOC_BLOCK))) + { + if (bpt) + { + /* Set a breakpoint here, if it's a function */ + if (class == 1) + { + /* There may be more than one function with the + same name but in different files. In order to + set breakpoints on all of them, we must give + both the file name and the function name to + break_command. + Quoting the symbol name gets rid of problems + with mangled symbol names that contain + CPLUS_MARKER characters. */ + char *string = + (char *) alloca (strlen (s->filename) + + strlen (SYMBOL_NAME(sym)) + + 4); + strcpy (string, s->filename); + strcat (string, ":'"); + strcat (string, SYMBOL_NAME(sym)); + strcat (string, "'"); + break_command (string, from_tty); + } + } + else if (!found_in_file) + { + fputs_filtered ("\nFile ", gdb_stdout); + fputs_filtered (s->filename, gdb_stdout); + fputs_filtered (":\n", gdb_stdout); + } + found_in_file = 1; + + if (class != 2 && i == STATIC_BLOCK) + printf_filtered ("static "); + + /* Typedef that is not a C++ class */ + if (class == 2 + && SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE) + c_typedef_print (SYMBOL_TYPE(sym), sym, gdb_stdout); + /* variable, func, or typedef-that-is-c++-class */ + else if (class < 2 || + (class == 2 && + 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 /* FIXME, why is this zapped out? */ + char buf[1024]; + c_type_print_base (TYPE_FN_FIELD_TYPE(t, i), + gdb_stdout, 0, 0); + c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t, i), + gdb_stdout, 0); + sprintf (buf, " %s::", type_name_no_tag (t)); + cp_type_print_method_args (TYPE_FN_FIELD_ARGS (t, i), + buf, name, gdb_stdout); +# endif + } + } + } + } + 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 || class != 1) + { + found_in_file = 0; + 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 (class != 1 || + (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) + { + if (bpt) + { + break_command (SYMBOL_NAME (msymbol), from_tty); + printf_filtered ("<function, no debug info> %s;\n", + SYMBOL_SOURCE_NAME (msymbol)); + continue; + } + if (!found_in_file) + { + printf_filtered ("\nNon-debugging symbols:\n"); + found_in_file = 1; + } + printf_filtered (" %08lx %s\n", + (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol), + SYMBOL_SOURCE_NAME (msymbol)); + } + } + } + } + } + } +} + +static void +variables_info (regexp, from_tty) + char *regexp; + int from_tty; +{ + list_symbols (regexp, 0, 0, from_tty); +} + +static void +functions_info (regexp, from_tty) + char *regexp; + int from_tty; +{ + list_symbols (regexp, 1, 0, from_tty); +} + +static void +types_info (regexp, from_tty) + char *regexp; + int from_tty; +{ + list_symbols (regexp, 2, 0, from_tty); +} + +#if 0 +/* Tiemann says: "info methods was never implemented." */ +static void +methods_info (regexp) + char *regexp; +{ + list_symbols (regexp, 3, 0, from_tty); +} +#endif /* 0 */ + +/* Breakpoint all functions matching regular expression. */ +static void +rbreak_command (regexp, from_tty) + char *regexp; + int from_tty; +{ + list_symbols (regexp, 1, 1, from_tty); +} + + +/* 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 thing 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; + + 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. */ + + SKIP_PROLOGUE (func_start); + + return pc < func_start; +} + + +void +_initialize_symtab () +{ + add_info ("variables", 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", no_class, rbreak_command, + "Set a breakpoint for all functions 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); +} |
