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Diffstat (limited to 'pstack/stabs.c')
| -rw-r--r-- | pstack/stabs.c | 5082 |
1 files changed, 0 insertions, 5082 deletions
diff --git a/pstack/stabs.c b/pstack/stabs.c deleted file mode 100644 index 076231d19cb..00000000000 --- a/pstack/stabs.c +++ /dev/null @@ -1,5082 +0,0 @@ -/* stabs.c -- Parse stabs debugging information - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. - Written by Ian Lance Taylor <ian@cygnus.com>. - - This file is part of GNU Binutils. - - 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. */ - -/* This file contains code which parses stabs debugging information. - The organization of this code is based on the gdb stabs reading - code. The job it does is somewhat different, because it is not - trying to identify the correct address for anything. */ - -#include <stdio.h> -#include <ctype.h> - -#include <bfd.h> -#include "bucomm.h" -#include <libiberty.h> -#include "demangle.h" -#include "debug.h" -#include "budbg.h" - -/* Meaningless definition needs by aout64.h. FIXME. */ -#define BYTES_IN_WORD 4 - -#include "aout/aout64.h" -#include "aout/stab_gnu.h" - -/* The number of predefined XCOFF types. */ - -#define XCOFF_TYPE_COUNT 34 - -/* This structure is used as a handle so that the stab parsing doesn't - need to use any static variables. */ - -struct stab_handle -{ - /* The BFD. */ - bfd *abfd; - /* True if this is stabs in sections. */ - boolean sections; - /* The symbol table. */ - asymbol **syms; - /* The number of symbols. */ - long symcount; - /* The accumulated file name string. */ - char *so_string; - /* The value of the last N_SO symbol. */ - bfd_vma so_value; - /* The value of the start of the file, so that we can handle file - relative N_LBRAC and N_RBRAC symbols. */ - bfd_vma file_start_offset; - /* The offset of the start of the function, so that we can handle - function relative N_LBRAC and N_RBRAC symbols. */ - bfd_vma function_start_offset; - /* The version number of gcc which compiled the current compilation - unit, 0 if not compiled by gcc. */ - int gcc_compiled; - /* Whether an N_OPT symbol was seen that was not generated by gcc, - so that we can detect the SunPRO compiler. */ - boolean n_opt_found; - /* The main file name. */ - char *main_filename; - /* A stack of unfinished N_BINCL files. */ - struct bincl_file *bincl_stack; - /* A list of finished N_BINCL files. */ - struct bincl_file *bincl_list; - /* Whether we are inside a function or not. */ - boolean within_function; - /* The address of the end of the function, used if we have seen an - N_FUN symbol while in a function. This is -1 if we have not seen - an N_FUN (the normal case). */ - bfd_vma function_end; - /* The depth of block nesting. */ - int block_depth; - /* List of pending variable definitions. */ - struct stab_pending_var *pending; - /* Number of files for which we have types. */ - unsigned int files; - /* Lists of types per file. */ - struct stab_types **file_types; - /* Predefined XCOFF types. */ - debug_type xcoff_types[XCOFF_TYPE_COUNT]; - /* Undefined tags. */ - struct stab_tag *tags; -}; - -/* A list of these structures is used to hold pending variable - definitions seen before the N_LBRAC of a block. */ - -struct stab_pending_var -{ - /* Next pending variable definition. */ - struct stab_pending_var *next; - /* Name. */ - const char *name; - /* Type. */ - debug_type type; - /* Kind. */ - enum debug_var_kind kind; - /* Value. */ - bfd_vma val; -}; - -/* A list of these structures is used to hold the types for a single - file. */ - -struct stab_types -{ - /* Next set of slots for this file. */ - struct stab_types *next; - /* Types indexed by type number. */ -#define STAB_TYPES_SLOTS (16) - debug_type types[STAB_TYPES_SLOTS]; -}; - -/* We keep a list of undefined tags that we encounter, so that we can - fill them in if the tag is later defined. */ - -struct stab_tag -{ - /* Next undefined tag. */ - struct stab_tag *next; - /* Tag name. */ - const char *name; - /* Type kind. */ - enum debug_type_kind kind; - /* Slot to hold real type when we discover it. If we don't, we fill - in an undefined tag type. */ - debug_type slot; - /* Indirect type we have created to point at slot. */ - debug_type type; -}; - -static char *savestring PARAMS ((const char *, int)); -static bfd_vma parse_number PARAMS ((const char **, boolean *)); -static void bad_stab PARAMS ((const char *)); -static void warn_stab PARAMS ((const char *, const char *)); -static boolean parse_stab_string - PARAMS ((PTR, struct stab_handle *, int, int, bfd_vma, const char *)); -static debug_type parse_stab_type - PARAMS ((PTR, struct stab_handle *, const char *, const char **, - debug_type **)); -static boolean parse_stab_type_number - PARAMS ((const char **, int *)); -static debug_type parse_stab_range_type - PARAMS ((PTR, struct stab_handle *, const char *, const char **, - const int *)); -static debug_type parse_stab_sun_builtin_type PARAMS ((PTR, const char **)); -static debug_type parse_stab_sun_floating_type - PARAMS ((PTR, const char **)); -static debug_type parse_stab_enum_type PARAMS ((PTR, const char **)); -static debug_type parse_stab_struct_type - PARAMS ((PTR, struct stab_handle *, const char *, const char **, boolean, - const int *)); -static boolean parse_stab_baseclasses - PARAMS ((PTR, struct stab_handle *, const char **, debug_baseclass **)); -static boolean parse_stab_struct_fields - PARAMS ((PTR, struct stab_handle *, const char **, debug_field **, - boolean *)); -static boolean parse_stab_cpp_abbrev - PARAMS ((PTR, struct stab_handle *, const char **, debug_field *)); -static boolean parse_stab_one_struct_field - PARAMS ((PTR, struct stab_handle *, const char **, const char *, - debug_field *, boolean *)); -static boolean parse_stab_members - PARAMS ((PTR, struct stab_handle *, const char *, const char **, - const int *, debug_method **)); -static debug_type parse_stab_argtypes - PARAMS ((PTR, struct stab_handle *, debug_type, const char *, const char *, - debug_type, const char *, boolean, boolean, const char **)); -static boolean parse_stab_tilde_field - PARAMS ((PTR, struct stab_handle *, const char **, const int *, - debug_type *, boolean *)); -static debug_type parse_stab_array_type - PARAMS ((PTR, struct stab_handle *, const char **, boolean)); -static void push_bincl PARAMS ((struct stab_handle *, const char *, bfd_vma)); -static const char *pop_bincl PARAMS ((struct stab_handle *)); -static boolean find_excl - PARAMS ((struct stab_handle *, const char *, bfd_vma)); -static boolean stab_record_variable - PARAMS ((PTR, struct stab_handle *, const char *, debug_type, - enum debug_var_kind, bfd_vma)); -static boolean stab_emit_pending_vars PARAMS ((PTR, struct stab_handle *)); -static debug_type *stab_find_slot - PARAMS ((struct stab_handle *, const int *)); -static debug_type stab_find_type - PARAMS ((PTR, struct stab_handle *, const int *)); -static boolean stab_record_type - PARAMS ((PTR, struct stab_handle *, const int *, debug_type)); -static debug_type stab_xcoff_builtin_type - PARAMS ((PTR, struct stab_handle *, int)); -static debug_type stab_find_tagged_type - PARAMS ((PTR, struct stab_handle *, const char *, int, - enum debug_type_kind)); -static debug_type *stab_demangle_argtypes - PARAMS ((PTR, struct stab_handle *, const char *, boolean *)); - -/* Save a string in memory. */ - -static char * -savestring (start, len) - const char *start; - int len; -{ - char *ret; - - ret = (char *) xmalloc (len + 1); - memcpy (ret, start, len); - ret[len] = '\0'; - return ret; -} - -/* Read a number from a string. */ - -static bfd_vma -parse_number (pp, poverflow) - const char **pp; - boolean *poverflow; -{ - unsigned long ul; - const char *orig; - - if (poverflow != NULL) - *poverflow = false; - - orig = *pp; - - errno = 0; - ul = strtoul (*pp, (char **) pp, 0); - if (ul + 1 != 0 || errno == 0) - return (bfd_vma) ul; - - /* Note that even though strtoul overflowed, it should have set *pp - to the end of the number, which is where we want it. */ - - if (sizeof (bfd_vma) > sizeof (unsigned long)) - { - const char *p; - boolean neg; - int base; - bfd_vma over, lastdig; - boolean overflow; - bfd_vma v; - - /* Our own version of strtoul, for a bfd_vma. */ - - p = orig; - - neg = false; - if (*p == '+') - ++p; - else if (*p == '-') - { - neg = true; - ++p; - } - - base = 10; - if (*p == '0') - { - if (p[1] == 'x' || p[1] == 'X') - { - base = 16; - p += 2; - } - else - { - base = 8; - ++p; - } - } - - over = ((bfd_vma) (bfd_signed_vma) -1) / (bfd_vma) base; - lastdig = ((bfd_vma) (bfd_signed_vma) -1) % (bfd_vma) base; - - overflow = false; - v = 0; - while (1) - { - int d; - - d = *p++; - if (isdigit ((unsigned char) d)) - d -= '0'; - else if (isupper ((unsigned char) d)) - d -= 'A'; - else if (islower ((unsigned char) d)) - d -= 'a'; - else - break; - - if (d >= base) - break; - - if (v > over || (v == over && (bfd_vma) d > lastdig)) - { - overflow = true; - break; - } - } - - if (! overflow) - { - if (neg) - v = - v; - return v; - } - } - - /* If we get here, the number is too large to represent in a - bfd_vma. */ - - if (poverflow != NULL) - *poverflow = true; - else - warn_stab (orig, "numeric overflow"); - - return 0; -} - -/* Give an error for a bad stab string. */ - -static void -bad_stab (p) - const char *p; -{ - fprintf (stderr, "Bad stab: %s\n", p); -} - -/* Warn about something in a stab string. */ - -static void -warn_stab (p, err) - const char *p; - const char *err; -{ - fprintf (stderr, "Warning: %s: %s\n", err, p); -} - -/* Create a handle to parse stabs symbols with. */ - -/*ARGSUSED*/ -PTR -start_stab (dhandle, abfd, sections, syms, symcount) - PTR dhandle; - bfd *abfd; - boolean sections; - asymbol **syms; - long symcount; -{ - struct stab_handle *ret; - - ret = (struct stab_handle *) xmalloc (sizeof *ret); - memset (ret, 0, sizeof *ret); - ret->abfd = abfd; - ret->sections = sections; - ret->syms = syms; - ret->symcount = symcount; - ret->files = 1; - ret->file_types = (struct stab_types **) xmalloc (sizeof *ret->file_types); - ret->file_types[0] = NULL; - ret->function_end = (bfd_vma) -1; - return (PTR) ret; -} - -/* When we have processed all the stabs information, we need to go - through and fill in all the undefined tags. */ - -boolean -finish_stab (dhandle, handle) - PTR dhandle; - PTR handle; -{ - struct stab_handle *info = (struct stab_handle *) handle; - struct stab_tag *st; - - if (info->within_function) - { - if (! stab_emit_pending_vars (dhandle, info) - || ! debug_end_function (dhandle, info->function_end)) - return false; - info->within_function = false; - info->function_end = (bfd_vma) -1; - } - - for (st = info->tags; st != NULL; st = st->next) - { - enum debug_type_kind kind; - - kind = st->kind; - if (kind == DEBUG_KIND_ILLEGAL) - kind = DEBUG_KIND_STRUCT; - st->slot = debug_make_undefined_tagged_type (dhandle, st->name, kind); - if (st->slot == DEBUG_TYPE_NULL) - return false; - } - - return true; -} - -/* Handle a single stabs symbol. */ - -boolean -parse_stab (dhandle, handle, type, desc, value, string) - PTR dhandle; - PTR handle; - int type; - int desc; - bfd_vma value; - const char *string; -{ - struct stab_handle *info = (struct stab_handle *) handle; - - /* gcc will emit two N_SO strings per compilation unit, one for the - directory name and one for the file name. We just collect N_SO - strings as we see them, and start the new compilation unit when - we see a non N_SO symbol. */ - if (info->so_string != NULL - && (type != N_SO || *string == '\0' || value != info->so_value)) - { - if (! debug_set_filename (dhandle, info->so_string)) - return false; - info->main_filename = info->so_string; - - info->gcc_compiled = 0; - info->n_opt_found = false; - - /* Generally, for stabs in the symbol table, the N_LBRAC and - N_RBRAC symbols are relative to the N_SO symbol value. */ - if (! info->sections) - info->file_start_offset = info->so_value; - - /* We need to reset the mapping from type numbers to types. We - can't free the old mapping, because of the use of - debug_make_indirect_type. */ - info->files = 1; - info->file_types = ((struct stab_types **) - xmalloc (sizeof *info->file_types)); - info->file_types[0] = NULL; - - info->so_string = NULL; - - /* Now process whatever type we just got. */ - } - - switch (type) - { - case N_FN: - case N_FN_SEQ: - break; - - case N_LBRAC: - /* Ignore extra outermost context from SunPRO cc and acc. */ - if (info->n_opt_found && desc == 1) - break; - - if (! info->within_function) - { - fprintf (stderr, "N_LBRAC not within function\n"); - return false; - } - - /* Start an inner lexical block. */ - if (! debug_start_block (dhandle, - (value - + info->file_start_offset - + info->function_start_offset))) - return false; - - /* Emit any pending variable definitions. */ - if (! stab_emit_pending_vars (dhandle, info)) - return false; - - ++info->block_depth; - break; - - case N_RBRAC: - /* Ignore extra outermost context from SunPRO cc and acc. */ - if (info->n_opt_found && desc == 1) - break; - - /* We shouldn't have any pending variable definitions here, but, - if we do, we probably need to emit them before closing the - block. */ - if (! stab_emit_pending_vars (dhandle, info)) - return false; - - /* End an inner lexical block. */ - if (! debug_end_block (dhandle, - (value - + info->file_start_offset - + info->function_start_offset))) - return false; - - --info->block_depth; - if (info->block_depth < 0) - { - fprintf (stderr, "Too many N_RBRACs\n"); - return false; - } - break; - - case N_SO: - /* This always ends a function. */ - if (info->within_function) - { - bfd_vma endval; - - endval = value; - if (*string != '\0' - && info->function_end != (bfd_vma) -1 - && info->function_end < endval) - endval = info->function_end; - if (! stab_emit_pending_vars (dhandle, info) - || ! debug_end_function (dhandle, endval)) - return false; - info->within_function = false; - info->function_end = (bfd_vma) -1; - } - - /* An empty string is emitted by gcc at the end of a compilation - unit. */ - if (*string == '\0') - return true; - - /* Just accumulate strings until we see a non N_SO symbol. If - the string starts with '/', we discard the previously - accumulated strings. */ - if (info->so_string == NULL) - info->so_string = xstrdup (string); - else - { - char *f; - - f = info->so_string; - if (*string == '/') - info->so_string = xstrdup (string); - else - info->so_string = concat (info->so_string, string, - (const char *) NULL); - free (f); - } - - info->so_value = value; - - break; - - case N_SOL: - /* Start an include file. */ - if (! debug_start_source (dhandle, string)) - return false; - break; - - case N_BINCL: - /* Start an include file which may be replaced. */ - push_bincl (info, string, value); - if (! debug_start_source (dhandle, string)) - return false; - break; - - case N_EINCL: - /* End an N_BINCL include. */ - if (! debug_start_source (dhandle, pop_bincl (info))) - return false; - break; - - case N_EXCL: - /* This is a duplicate of a header file named by N_BINCL which - was eliminated by the linker. */ - if (! find_excl (info, string, value)) - return false; - break; - - case N_SLINE: - if (! debug_record_line (dhandle, desc, - value + info->function_start_offset)) - return false; - break; - - case N_BCOMM: - if (! debug_start_common_block (dhandle, string)) - return false; - break; - - case N_ECOMM: - if (! debug_end_common_block (dhandle, string)) - return false; - break; - - case N_FUN: - if (*string == '\0') - { - if (info->within_function) - { - /* This always marks the end of a function; we don't - need to worry about info->function_end. */ - if (info->sections) - value += info->function_start_offset; - if (! stab_emit_pending_vars (dhandle, info) - || ! debug_end_function (dhandle, value)) - return false; - info->within_function = false; - info->function_end = (bfd_vma) -1; - } - break; - } - - /* A const static symbol in the .text section will have an N_FUN - entry. We need to use these to mark the end of the function, - in case we are looking at gcc output before it was changed to - always emit an empty N_FUN. We can't call debug_end_function - here, because it might be a local static symbol. */ - if (info->within_function - && (info->function_end == (bfd_vma) -1 - || value < info->function_end)) - info->function_end = value; - - /* Fall through. */ - /* FIXME: gdb checks the string for N_STSYM, N_LCSYM or N_ROSYM - symbols, and if it does not start with :S, gdb relocates the - value to the start of the section. gcc always seems to use - :S, so we don't worry about this. */ - /* Fall through. */ - default: - { - const char *colon; - - colon = strchr (string, ':'); - if (colon != NULL - && (colon[1] == 'f' || colon[1] == 'F')) - { - if (info->within_function) - { - bfd_vma endval; - - endval = value; - if (info->function_end != (bfd_vma) -1 - && info->function_end < endval) - endval = info->function_end; - if (! stab_emit_pending_vars (dhandle, info) - || ! debug_end_function (dhandle, endval)) - return false; - info->function_end = (bfd_vma) -1; - } - /* For stabs in sections, line numbers and block addresses - are offsets from the start of the function. */ - if (info->sections) - info->function_start_offset = value; - info->within_function = true; - } - - if (! parse_stab_string (dhandle, info, type, desc, value, string)) - return false; - } - break; - - case N_OPT: - if (string != NULL && strcmp (string, "gcc2_compiled.") == 0) - info->gcc_compiled = 2; - else if (string != NULL && strcmp (string, "gcc_compiled.") == 0) - info->gcc_compiled = 1; - else - info->n_opt_found = true; - break; - - case N_OBJ: - case N_ENDM: - case N_MAIN: - break; - } - - return true; -} - -/* Parse the stabs string. */ - -static boolean -parse_stab_string (dhandle, info, stabtype, desc, value, string) - PTR dhandle; - struct stab_handle *info; - int stabtype; - int desc; - bfd_vma value; - const char *string; -{ - const char *p; - char *name; - int type; - debug_type dtype; - boolean synonym; - unsigned int lineno; - debug_type *slot; - - p = strchr (string, ':'); - if (p == NULL) - return true; - - while (p[1] == ':') - { - p += 2; - p = strchr (p, ':'); - if (p == NULL) - { - bad_stab (string); - return false; - } - } - - /* GCC 2.x puts the line number in desc. SunOS apparently puts in - the number of bytes occupied by a type or object, which we - ignore. */ - if (info->gcc_compiled >= 2) - lineno = desc; - else - lineno = 0; - - /* FIXME: Sometimes the special C++ names start with '.'. */ - name = NULL; - if (string[0] == '$') - { - switch (string[1]) - { - case 't': - name = "this"; - break; - case 'v': - /* Was: name = "vptr"; */ - break; - case 'e': - name = "eh_throw"; - break; - case '_': - /* This was an anonymous type that was never fixed up. */ - break; - case 'X': - /* SunPRO (3.0 at least) static variable encoding. */ - break; - default: - warn_stab (string, "unknown C++ encoded name"); - break; - } - } - - if (name == NULL) - { - if (p == string || (string[0] == ' ' && p == string + 1)) - name = NULL; - else - name = savestring (string, p - string); - } - - ++p; - if (isdigit ((unsigned char) *p) || *p == '(' || *p == '-') - type = 'l'; - else - type = *p++; - - switch (type) - { - case 'c': - /* c is a special case, not followed by a type-number. - SYMBOL:c=iVALUE for an integer constant symbol. - SYMBOL:c=rVALUE for a floating constant symbol. - SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. - e.g. "b:c=e6,0" for "const b = blob1" - (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ - if (*p != '=') - { - bad_stab (string); - return false; - } - ++p; - switch (*p++) - { - case 'r': - /* Floating point constant. */ - if (! debug_record_float_const (dhandle, name, atof (p))) - return false; - break; - case 'i': - /* Integer constant. */ - /* Defining integer constants this way is kind of silly, - since 'e' constants allows the compiler to give not only - the value, but the type as well. C has at least int, - long, unsigned int, and long long as constant types; - other languages probably should have at least unsigned as - well as signed constants. */ - if (! debug_record_int_const (dhandle, name, atoi (p))) - return false; - break; - case 'e': - /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value - can be represented as integral. - e.g. "b:c=e6,0" for "const b = blob1" - (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, - &p, (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (*p != ',') - { - bad_stab (string); - return false; - } - if (! debug_record_typed_const (dhandle, name, dtype, atoi (p))) - return false; - break; - default: - bad_stab (string); - return false; - } - - break; - - case 'C': - /* The name of a caught exception. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, - &p, (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_label (dhandle, name, dtype, value)) - return false; - break; - - case 'f': - case 'F': - /* A function definition. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_function (dhandle, name, dtype, type == 'F', value)) - return false; - - /* Sun acc puts declared types of arguments here. We don't care - about their actual types (FIXME -- we should remember the whole - function prototype), but the list may define some new types - that we have to remember, so we must scan it now. */ - while (*p == ';') - { - ++p; - if (parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL) - == DEBUG_TYPE_NULL) - return false; - } - - break; - - case 'G': - { - char leading; - long c; - asymbol **ps; - - /* A global symbol. The value must be extracted from the - symbol table. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - leading = bfd_get_symbol_leading_char (info->abfd); - for (c = info->symcount, ps = info->syms; c > 0; --c, ++ps) - { - const char *n; - - n = bfd_asymbol_name (*ps); - if (leading != '\0' && *n == leading) - ++n; - if (*n == *name && strcmp (n, name) == 0) - break; - } - if (c > 0) - value = bfd_asymbol_value (*ps); - if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_GLOBAL, - value)) - return false; - } - break; - - /* This case is faked by a conditional above, when there is no - code letter in the dbx data. Dbx data never actually - contains 'l'. */ - case 'l': - case 's': - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_LOCAL, - value)) - return false; - break; - - case 'p': - /* A function parameter. */ - if (*p != 'F') - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - else - { - /* pF is a two-letter code that means a function parameter in - Fortran. The type-number specifies the type of the return - value. Translate it into a pointer-to-function type. */ - ++p; - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype != DEBUG_TYPE_NULL) - { - debug_type ftype; - - ftype = debug_make_function_type (dhandle, dtype, - (debug_type *) NULL, false); - dtype = debug_make_pointer_type (dhandle, ftype); - } - } - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_STACK, - value)) - return false; - - /* FIXME: At this point gdb considers rearranging the parameter - address on a big endian machine if it is smaller than an int. - We have no way to do that, since we don't really know much - about the target. */ - - break; - - case 'P': - if (stabtype == N_FUN) - { - /* Prototype of a function referenced by this file. */ - while (*p == ';') - { - ++p; - if (parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL) - == DEBUG_TYPE_NULL) - return false; - } - break; - } - /* Fall through. */ - case 'R': - /* Parameter which is in a register. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REG, - value)) - return false; - break; - - case 'r': - /* Register variable (either global or local). */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_REGISTER, - value)) - return false; - - /* FIXME: At this point gdb checks to combine pairs of 'p' and - 'r' stabs into a single 'P' stab. */ - - break; - - case 'S': - /* Static symbol at top level of file */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_STATIC, - value)) - return false; - break; - - case 't': - /* A typedef. */ - dtype = parse_stab_type (dhandle, info, name, &p, &slot); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (name == NULL) - { - /* A nameless type. Nothing to do. */ - return true; - } - - dtype = debug_name_type (dhandle, name, dtype); - if (dtype == DEBUG_TYPE_NULL) - return false; - - if (slot != NULL) - *slot = dtype; - - break; - - case 'T': - /* Struct, union, or enum tag. For GNU C++, this can be be followed - by 't' which means we are typedef'ing it as well. */ - if (*p != 't') - { - synonym = false; - /* FIXME: gdb sets synonym to true if the current language - is C++. */ - } - else - { - synonym = true; - ++p; - } - - dtype = parse_stab_type (dhandle, info, name, &p, &slot); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (name == NULL) - return true; - - dtype = debug_tag_type (dhandle, name, dtype); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (slot != NULL) - *slot = dtype; - - /* See if we have a cross reference to this tag which we can now - fill in. */ - { - register struct stab_tag **pst; - - for (pst = &info->tags; *pst != NULL; pst = &(*pst)->next) - { - if ((*pst)->name[0] == name[0] - && strcmp ((*pst)->name, name) == 0) - { - (*pst)->slot = dtype; - *pst = (*pst)->next; - break; - } - } - } - - if (synonym) - { - dtype = debug_name_type (dhandle, name, dtype); - if (dtype == DEBUG_TYPE_NULL) - return false; - - if (slot != NULL) - *slot = dtype; - } - - break; - - case 'V': - /* Static symbol of local scope */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - /* FIXME: gdb checks os9k_stabs here. */ - if (! stab_record_variable (dhandle, info, name, dtype, - DEBUG_LOCAL_STATIC, value)) - return false; - break; - - case 'v': - /* Reference parameter. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REFERENCE, - value)) - return false; - break; - - case 'a': - /* Reference parameter which is in a register. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REF_REG, - value)) - return false; - break; - - case 'X': - /* This is used by Sun FORTRAN for "function result value". - Sun claims ("dbx and dbxtool interfaces", 2nd ed) - that Pascal uses it too, but when I tried it Pascal used - "x:3" (local symbol) instead. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p, - (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return false; - if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_LOCAL, - value)) - return false; - break; - - default: - bad_stab (string); - return false; - } - - /* FIXME: gdb converts structure values to structure pointers in a - couple of cases, depending upon the target. */ - - return true; -} - -/* Parse a stabs type. The typename argument is non-NULL if this is a - typedef or a tag definition. The pp argument points to the stab - string, and is updated. The slotp argument points to a place to - store the slot used if the type is being defined. */ - -static debug_type -parse_stab_type (dhandle, info, typename, pp, slotp) - PTR dhandle; - struct stab_handle *info; - const char *typename; - const char **pp; - debug_type **slotp; -{ - const char *orig; - int typenums[2]; - int size; - boolean stringp; - int descriptor; - debug_type dtype; - - if (slotp != NULL) - *slotp = NULL; - - orig = *pp; - - size = -1; - stringp = false; - - /* Read type number if present. The type number may be omitted. - for instance in a two-dimensional array declared with type - "ar1;1;10;ar1;1;10;4". */ - if (! isdigit ((unsigned char) **pp) && **pp != '(' && **pp != '-') - { - /* 'typenums=' not present, type is anonymous. Read and return - the definition, but don't put it in the type vector. */ - typenums[0] = typenums[1] = -1; - } - else - { - if (! parse_stab_type_number (pp, typenums)) - return DEBUG_TYPE_NULL; - - if (**pp != '=') - { - /* Type is not being defined here. Either it already - exists, or this is a forward reference to it. */ - return stab_find_type (dhandle, info, typenums); - } - - /* Only set the slot if the type is being defined. This means - that the mapping from type numbers to types will only record - the name of the typedef which defines a type. If we don't do - this, then something like - typedef int foo; - int i; - will record that i is of type foo. Unfortunately, stabs - information is ambiguous about variable types. For this code, - typedef int foo; - int i; - foo j; - the stabs information records both i and j as having the same - type. This could be fixed by patching the compiler. */ - if (slotp != NULL && typenums[0] >= 0 && typenums[1] >= 0) - *slotp = stab_find_slot (info, typenums); - - /* Type is being defined here. */ - /* Skip the '='. */ - ++*pp; - - while (**pp == '@') - { - const char *p = *pp + 1; - const char *attr; - - if (isdigit ((unsigned char) *p) || *p == '(' || *p == '-') - { - /* Member type. */ - break; - } - - /* Type attributes. */ - attr = p; - - for (; *p != ';'; ++p) - { - if (*p == '\0') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - } - *pp = p + 1; - - switch (*attr) - { - case 's': - size = atoi (attr + 1); - if (size <= 0) - size = -1; - break; - - case 'S': - stringp = true; - break; - - default: - /* Ignore unrecognized type attributes, so future - compilers can invent new ones. */ - break; - } - } - } - - descriptor = **pp; - ++*pp; - - switch (descriptor) - { - case 'x': - { - enum debug_type_kind code; - const char *q1, *q2, *p; - - /* A cross reference to another type. */ - - switch (**pp) - { - case 's': - code = DEBUG_KIND_STRUCT; - break; - case 'u': - code = DEBUG_KIND_UNION; - break; - case 'e': - code = DEBUG_KIND_ENUM; - break; - default: - /* Complain and keep going, so compilers can invent new - cross-reference types. */ - warn_stab (orig, "unrecognized cross reference type"); - code = DEBUG_KIND_STRUCT; - break; - } - ++*pp; - - q1 = strchr (*pp, '<'); - p = strchr (*pp, ':'); - if (p == NULL) - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - while (q1 != NULL && p > q1 && p[1] == ':') - { - q2 = strchr (q1, '>'); - if (q2 == NULL || q2 < p) - break; - p += 2; - p = strchr (p, ':'); - if (p == NULL) - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - } - - dtype = stab_find_tagged_type (dhandle, info, *pp, p - *pp, code); - - *pp = p + 1; - } - break; - - case '-': - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - case '(': - { - const char *hold; - int xtypenums[2]; - - /* This type is defined as another type. */ - - (*pp)--; - hold = *pp; - - /* Peek ahead at the number to detect void. */ - if (! parse_stab_type_number (pp, xtypenums)) - return DEBUG_TYPE_NULL; - - if (typenums[0] == xtypenums[0] && typenums[1] == xtypenums[1]) - { - /* This type is being defined as itself, which means that - it is void. */ - dtype = debug_make_void_type (dhandle); - } - else - { - *pp = hold; - - /* Go back to the number and have parse_stab_type get it. - This means that we can deal with something like - t(1,2)=(3,4)=... which the Lucid compiler uses. */ - dtype = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (dtype == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - } - - if (typenums[0] != -1) - { - if (! stab_record_type (dhandle, info, typenums, dtype)) - return DEBUG_TYPE_NULL; - } - - break; - } - - case '*': - dtype = debug_make_pointer_type (dhandle, - parse_stab_type (dhandle, info, - (const char *) NULL, - pp, - (debug_type **) NULL)); - break; - - case '&': - /* Reference to another type. */ - dtype = (debug_make_reference_type - (dhandle, - parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL))); - break; - - case 'f': - /* Function returning another type. */ - /* FIXME: gdb checks os9k_stabs here. */ - dtype = (debug_make_function_type - (dhandle, - parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL), - (debug_type *) NULL, false)); - break; - - case 'k': - /* Const qualifier on some type (Sun). */ - /* FIXME: gdb accepts 'c' here if os9k_stabs. */ - dtype = debug_make_const_type (dhandle, - parse_stab_type (dhandle, info, - (const char *) NULL, - pp, - (debug_type **) NULL)); - break; - - case 'B': - /* Volatile qual on some type (Sun). */ - /* FIXME: gdb accepts 'i' here if os9k_stabs. */ - dtype = (debug_make_volatile_type - (dhandle, - parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL))); - break; - - case '@': - /* Offset (class & variable) type. This is used for a pointer - relative to an object. */ - { - debug_type domain; - debug_type memtype; - - /* Member type. */ - - domain = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (domain == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - if (**pp != ',') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - memtype = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (memtype == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - dtype = debug_make_offset_type (dhandle, domain, memtype); - } - break; - - case '#': - /* Method (class & fn) type. */ - if (**pp == '#') - { - debug_type return_type; - - ++*pp; - return_type = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (return_type == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - dtype = debug_make_method_type (dhandle, return_type, - DEBUG_TYPE_NULL, - (debug_type *) NULL, false); - } - else - { - debug_type domain; - debug_type return_type; - debug_type *args; - unsigned int n; - unsigned int alloc; - boolean varargs; - - domain = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (domain == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - if (**pp != ',') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - return_type = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (return_type == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - alloc = 10; - args = (debug_type *) xmalloc (alloc * sizeof *args); - n = 0; - while (**pp != ';') - { - if (**pp != ',') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - if (n + 1 >= alloc) - { - alloc += 10; - args = ((debug_type *) - xrealloc ((PTR) args, alloc * sizeof *args)); - } - - args[n] = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (args[n] == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - ++n; - } - ++*pp; - - /* If the last type is not void, then this function takes a - variable number of arguments. Otherwise, we must strip - the void type. */ - if (n == 0 - || debug_get_type_kind (dhandle, args[n - 1]) != DEBUG_KIND_VOID) - varargs = true; - else - { - --n; - varargs = false; - } - - args[n] = DEBUG_TYPE_NULL; - - dtype = debug_make_method_type (dhandle, return_type, domain, args, - varargs); - } - break; - - case 'r': - /* Range type. */ - dtype = parse_stab_range_type (dhandle, info, typename, pp, typenums); - break; - - case 'b': - /* FIXME: gdb checks os9k_stabs here. */ - /* Sun ACC builtin int type. */ - dtype = parse_stab_sun_builtin_type (dhandle, pp); - break; - - case 'R': - /* Sun ACC builtin float type. */ - dtype = parse_stab_sun_floating_type (dhandle, pp); - break; - - case 'e': - /* Enumeration type. */ - dtype = parse_stab_enum_type (dhandle, pp); - break; - - case 's': - case 'u': - /* Struct or union type. */ - dtype = parse_stab_struct_type (dhandle, info, typename, pp, - descriptor == 's', typenums); - break; - - case 'a': - /* Array type. */ - if (**pp != 'r') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - dtype = parse_stab_array_type (dhandle, info, pp, stringp); - break; - - case 'S': - dtype = debug_make_set_type (dhandle, - parse_stab_type (dhandle, info, - (const char *) NULL, - pp, - (debug_type **) NULL), - stringp); - break; - - default: - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - - if (dtype == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - if (typenums[0] != -1) - { - if (! stab_record_type (dhandle, info, typenums, dtype)) - return DEBUG_TYPE_NULL; - } - - if (size != -1) - { - if (! debug_record_type_size (dhandle, dtype, (unsigned int) size)) - return DEBUG_TYPE_NULL; - } - - return dtype; -} - -/* Read a number by which a type is referred to in dbx data, or - perhaps read a pair (FILENUM, TYPENUM) in parentheses. Just a - single number N is equivalent to (0,N). Return the two numbers by - storing them in the vector TYPENUMS. */ - -static boolean -parse_stab_type_number (pp, typenums) - const char **pp; - int *typenums; -{ - const char *orig; - - orig = *pp; - - if (**pp != '(') - { - typenums[0] = 0; - typenums[1] = (int) parse_number (pp, (boolean *) NULL); - } - else - { - ++*pp; - typenums[0] = (int) parse_number (pp, (boolean *) NULL); - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - typenums[1] = (int) parse_number (pp, (boolean *) NULL); - if (**pp != ')') - { - bad_stab (orig); - return false; - } - ++*pp; - } - - return true; -} - -/* Parse a range type. */ - -static debug_type -parse_stab_range_type (dhandle, info, typename, pp, typenums) - PTR dhandle; - struct stab_handle *info; - const char *typename; - const char **pp; - const int *typenums; -{ - const char *orig; - int rangenums[2]; - boolean self_subrange; - debug_type index_type; - const char *s2, *s3; - bfd_signed_vma n2, n3; - boolean ov2, ov3; - - orig = *pp; - - index_type = DEBUG_TYPE_NULL; - - /* First comes a type we are a subrange of. - In C it is usually 0, 1 or the type being defined. */ - if (! parse_stab_type_number (pp, rangenums)) - return DEBUG_TYPE_NULL; - - self_subrange = (rangenums[0] == typenums[0] - && rangenums[1] == typenums[1]); - - if (**pp == '=') - { - *pp = orig; - index_type = parse_stab_type (dhandle, info, (const char *) NULL, - pp, (debug_type **) NULL); - if (index_type == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - } - - if (**pp == ';') - ++*pp; - - /* The remaining two operands are usually lower and upper bounds of - the range. But in some special cases they mean something else. */ - s2 = *pp; - n2 = parse_number (pp, &ov2); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - s3 = *pp; - n3 = parse_number (pp, &ov3); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - if (ov2 || ov3) - { - /* gcc will emit range stabs for long long types. Handle this - as a special case. FIXME: This needs to be more general. */ -#define LLLOW "01000000000000000000000;" -#define LLHIGH "0777777777777777777777;" -#define ULLHIGH "01777777777777777777777;" - if (index_type == DEBUG_TYPE_NULL) - { - if (strncmp (s2, LLLOW, sizeof LLLOW - 1) == 0 - && strncmp (s3, LLHIGH, sizeof LLHIGH - 1) == 0) - return debug_make_int_type (dhandle, 8, false); - if (! ov2 - && n2 == 0 - && strncmp (s3, ULLHIGH, sizeof ULLHIGH - 1) == 0) - return debug_make_int_type (dhandle, 8, true); - } - - warn_stab (orig, "numeric overflow"); - } - - if (index_type == DEBUG_TYPE_NULL) - { - /* A type defined as a subrange of itself, with both bounds 0, - is void. */ - if (self_subrange && n2 == 0 && n3 == 0) - return debug_make_void_type (dhandle); - - /* A type defined as a subrange of itself, with n2 positive and - n3 zero, is a complex type, and n2 is the number of bytes. */ - if (self_subrange && n3 == 0 && n2 > 0) - return debug_make_complex_type (dhandle, n2); - - /* If n3 is zero and n2 is positive, this is a floating point - type, and n2 is the number of bytes. */ - if (n3 == 0 && n2 > 0) - return debug_make_float_type (dhandle, n2); - - /* If the upper bound is -1, this is an unsigned int. */ - if (n2 == 0 && n3 == -1) - { - /* When gcc is used with -gstabs, but not -gstabs+, it will emit - long long int:t6=r1;0;-1; - long long unsigned int:t7=r1;0;-1; - We hack here to handle this reasonably. */ - if (typename != NULL) - { - if (strcmp (typename, "long long int") == 0) - return debug_make_int_type (dhandle, 8, false); - else if (strcmp (typename, "long long unsigned int") == 0) - return debug_make_int_type (dhandle, 8, true); - } - /* FIXME: The size here really depends upon the target. */ - return debug_make_int_type (dhandle, 4, true); - } - - /* A range of 0 to 127 is char. */ - if (self_subrange && n2 == 0 && n3 == 127) - return debug_make_int_type (dhandle, 1, false); - - /* FIXME: gdb checks for the language CHILL here. */ - - if (n2 == 0) - { - if (n3 < 0) - return debug_make_int_type (dhandle, - n3, true); - else if (n3 == 0xff) - return debug_make_int_type (dhandle, 1, true); - else if (n3 == 0xffff) - return debug_make_int_type (dhandle, 2, true); - /* -1 is used for the upper bound of (4 byte) "unsigned int" - and "unsigned long", and we already checked for that, so - don't need to test for it here. */ - } - else if (n3 == 0 - && n2 < 0 - && (self_subrange || n2 == -8)) - return debug_make_int_type (dhandle, - n2, true); - else if (n2 == - n3 - 1) - { - if (n3 == 0x7f) - return debug_make_int_type (dhandle, 1, false); - else if (n3 == 0x7fff) - return debug_make_int_type (dhandle, 2, false); - else if (n3 == 0x7fffffff) - return debug_make_int_type (dhandle, 4, false); - } - } - - /* At this point I don't have the faintest idea how to deal with a - self_subrange type; I'm going to assume that this is used as an - idiom, and that all of them are special cases. So . . . */ - if (self_subrange) - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - - index_type = stab_find_type (dhandle, info, rangenums); - if (index_type == DEBUG_TYPE_NULL) - { - /* Does this actually ever happen? Is that why we are worrying - about dealing with it rather than just calling error_type? */ - warn_stab (orig, "missing index type"); - index_type = debug_make_int_type (dhandle, 4, false); - } - - return debug_make_range_type (dhandle, index_type, n2, n3); -} - -/* Sun's ACC uses a somewhat saner method for specifying the builtin - typedefs in every file (for int, long, etc): - - type = b <signed> <width>; <offset>; <nbits> - signed = u or s. Possible c in addition to u or s (for char?). - offset = offset from high order bit to start bit of type. - width is # bytes in object of this type, nbits is # bits in type. - - The width/offset stuff appears to be for small objects stored in - larger ones (e.g. `shorts' in `int' registers). We ignore it for now, - FIXME. */ - -static debug_type -parse_stab_sun_builtin_type (dhandle, pp) - PTR dhandle; - const char **pp; -{ - const char *orig; - boolean unsignedp; - bfd_vma bits; - - orig = *pp; - - switch (**pp) - { - case 's': - unsignedp = false; - break; - case 'u': - unsignedp = true; - break; - default: - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - /* For some odd reason, all forms of char put a c here. This is strange - because no other type has this honor. We can safely ignore this because - we actually determine 'char'acterness by the number of bits specified in - the descriptor. */ - if (**pp == 'c') - ++*pp; - - /* The first number appears to be the number of bytes occupied - by this type, except that unsigned short is 4 instead of 2. - Since this information is redundant with the third number, - we will ignore it. */ - (void) parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - /* The second number is always 0, so ignore it too. */ - (void) parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - /* The third number is the number of bits for this type. */ - bits = parse_number (pp, (boolean *) NULL); - - /* The type *should* end with a semicolon. If it are embedded - in a larger type the semicolon may be the only way to know where - the type ends. If this type is at the end of the stabstring we - can deal with the omitted semicolon (but we don't have to like - it). Don't bother to complain(), Sun's compiler omits the semicolon - for "void". */ - if (**pp == ';') - ++*pp; - - if (bits == 0) - return debug_make_void_type (dhandle); - - return debug_make_int_type (dhandle, bits / 8, unsignedp); -} - -/* Parse a builtin floating type generated by the Sun compiler. */ - -static debug_type -parse_stab_sun_floating_type (dhandle, pp) - PTR dhandle; - const char **pp; -{ - const char *orig; - bfd_vma details; - bfd_vma bytes; - - orig = *pp; - - /* The first number has more details about the type, for example - FN_COMPLEX. */ - details = parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - - /* The second number is the number of bytes occupied by this type */ - bytes = parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - - if (details == NF_COMPLEX - || details == NF_COMPLEX16 - || details == NF_COMPLEX32) - return debug_make_complex_type (dhandle, bytes); - - return debug_make_float_type (dhandle, bytes); -} - -/* Handle an enum type. */ - -static debug_type -parse_stab_enum_type (dhandle, pp) - PTR dhandle; - const char **pp; -{ - const char *orig; - const char **names; - bfd_signed_vma *values; - unsigned int n; - unsigned int alloc; - - orig = *pp; - - /* FIXME: gdb checks os9k_stabs here. */ - - /* The aix4 compiler emits an extra field before the enum members; - my guess is it's a type of some sort. Just ignore it. */ - if (**pp == '-') - { - while (**pp != ':') - ++*pp; - ++*pp; - } - - /* Read the value-names and their values. - The input syntax is NAME:VALUE,NAME:VALUE, and so on. - A semicolon or comma instead of a NAME means the end. */ - alloc = 10; - names = (const char **) xmalloc (alloc * sizeof *names); - values = (bfd_signed_vma *) xmalloc (alloc * sizeof *values); - n = 0; - while (**pp != '\0' && **pp != ';' && **pp != ',') - { - const char *p; - char *name; - bfd_signed_vma val; - - p = *pp; - while (*p != ':') - ++p; - - name = savestring (*pp, p - *pp); - - *pp = p + 1; - val = (bfd_signed_vma) parse_number (pp, (boolean *) NULL); - if (**pp != ',') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - if (n + 1 >= alloc) - { - alloc += 10; - names = ((const char **) - xrealloc ((PTR) names, alloc * sizeof *names)); - values = ((bfd_signed_vma *) - xrealloc ((PTR) values, alloc * sizeof *values)); - } - - names[n] = name; - values[n] = val; - ++n; - } - - names[n] = NULL; - values[n] = 0; - - if (**pp == ';') - ++*pp; - - return debug_make_enum_type (dhandle, names, values); -} - -/* Read the description of a structure (or union type) and return an object - describing the type. - - PP points to a character pointer that points to the next unconsumed token - in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", - *PP will point to "4a:1,0,32;;". */ - -static debug_type -parse_stab_struct_type (dhandle, info, tagname, pp, structp, typenums) - PTR dhandle; - struct stab_handle *info; - const char *tagname; - const char **pp; - boolean structp; - const int *typenums; -{ - const char *orig; - bfd_vma size; - debug_baseclass *baseclasses; - debug_field *fields; - boolean statics; - debug_method *methods; - debug_type vptrbase; - boolean ownvptr; - - orig = *pp; - - /* Get the size. */ - size = parse_number (pp, (boolean *) NULL); - - /* Get the other information. */ - if (! parse_stab_baseclasses (dhandle, info, pp, &baseclasses) - || ! parse_stab_struct_fields (dhandle, info, pp, &fields, &statics) - || ! parse_stab_members (dhandle, info, tagname, pp, typenums, &methods) - || ! parse_stab_tilde_field (dhandle, info, pp, typenums, &vptrbase, - &ownvptr)) - return DEBUG_TYPE_NULL; - - if (! statics - && baseclasses == NULL - && methods == NULL - && vptrbase == DEBUG_TYPE_NULL - && ! ownvptr) - return debug_make_struct_type (dhandle, structp, size, fields); - - return debug_make_object_type (dhandle, structp, size, fields, baseclasses, - methods, vptrbase, ownvptr); -} - -/* The stabs for C++ derived classes contain baseclass information which - is marked by a '!' character after the total size. This function is - called when we encounter the baseclass marker, and slurps up all the - baseclass information. - - Immediately following the '!' marker is the number of base classes that - the class is derived from, followed by information for each base class. - For each base class, there are two visibility specifiers, a bit offset - to the base class information within the derived class, a reference to - the type for the base class, and a terminating semicolon. - - A typical example, with two base classes, would be "!2,020,19;0264,21;". - ^^ ^ ^ ^ ^ ^ ^ - Baseclass information marker __________________|| | | | | | | - Number of baseclasses __________________________| | | | | | | - Visibility specifiers (2) ________________________| | | | | | - Offset in bits from start of class _________________| | | | | - Type number for base class ___________________________| | | | - Visibility specifiers (2) _______________________________| | | - Offset in bits from start of class ________________________| | - Type number of base class ____________________________________| - - Return true for success, false for failure. */ - -static boolean -parse_stab_baseclasses (dhandle, info, pp, retp) - PTR dhandle; - struct stab_handle *info; - const char **pp; - debug_baseclass **retp; -{ - const char *orig; - unsigned int c, i; - debug_baseclass *classes; - - *retp = NULL; - - orig = *pp; - - if (**pp != '!') - { - /* No base classes. */ - return true; - } - ++*pp; - - c = (unsigned int) parse_number (pp, (boolean *) NULL); - - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - - classes = (debug_baseclass *) xmalloc ((c + 1) * sizeof (**retp)); - - for (i = 0; i < c; i++) - { - boolean virtual; - enum debug_visibility visibility; - bfd_vma bitpos; - debug_type type; - - switch (**pp) - { - case '0': - virtual = false; - break; - case '1': - virtual = true; - break; - default: - warn_stab (orig, "unknown virtual character for baseclass"); - virtual = false; - break; - } - ++*pp; - - switch (**pp) - { - case '0': - visibility = DEBUG_VISIBILITY_PRIVATE; - break; - case '1': - visibility = DEBUG_VISIBILITY_PROTECTED; - break; - case '2': - visibility = DEBUG_VISIBILITY_PUBLIC; - break; - default: - warn_stab (orig, "unknown visibility character for baseclass"); - visibility = DEBUG_VISIBILITY_PUBLIC; - break; - } - ++*pp; - - /* The remaining value is the bit offset of the portion of the - object corresponding to this baseclass. Always zero in the - absence of multiple inheritance. */ - bitpos = parse_number (pp, (boolean *) NULL); - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - - type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (type == DEBUG_TYPE_NULL) - return false; - - classes[i] = debug_make_baseclass (dhandle, type, bitpos, virtual, - visibility); - if (classes[i] == DEBUG_BASECLASS_NULL) - return false; - - if (**pp != ';') - return false; - ++*pp; - } - - classes[i] = DEBUG_BASECLASS_NULL; - - *retp = classes; - - return true; -} - -/* Read struct or class data fields. They have the form: - - NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; - - At the end, we see a semicolon instead of a field. - - In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for - a static field. - - The optional VISIBILITY is one of: - - '/0' (VISIBILITY_PRIVATE) - '/1' (VISIBILITY_PROTECTED) - '/2' (VISIBILITY_PUBLIC) - '/9' (VISIBILITY_IGNORE) - - or nothing, for C style fields with public visibility. - - Returns 1 for success, 0 for failure. */ - -static boolean -parse_stab_struct_fields (dhandle, info, pp, retp, staticsp) - PTR dhandle; - struct stab_handle *info; - const char **pp; - debug_field **retp; - boolean *staticsp; -{ - const char *orig; - const char *p; - debug_field *fields; - unsigned int c; - unsigned int alloc; - - *retp = NULL; - *staticsp = false; - - orig = *pp; - - c = 0; - alloc = 10; - fields = (debug_field *) xmalloc (alloc * sizeof *fields); - while (**pp != ';') - { - /* FIXME: gdb checks os9k_stabs here. */ - - p = *pp; - - /* Add 1 to c to leave room for NULL pointer at end. */ - if (c + 1 >= alloc) - { - alloc += 10; - fields = ((debug_field *) - xrealloc ((PTR) fields, alloc * sizeof *fields)); - } - - /* If it starts with CPLUS_MARKER it is a special abbreviation, - unless the CPLUS_MARKER is followed by an underscore, in - which case it is just the name of an anonymous type, which we - should handle like any other type name. We accept either '$' - or '.', because a field name can never contain one of these - characters except as a CPLUS_MARKER. */ - - if ((*p == '$' || *p == '.') && p[1] != '_') - { - ++*pp; - if (! parse_stab_cpp_abbrev (dhandle, info, pp, fields + c)) - return false; - ++c; - continue; - } - - /* Look for the ':' that separates the field name from the field - values. Data members are delimited by a single ':', while member - functions are delimited by a pair of ':'s. When we hit the member - functions (if any), terminate scan loop and return. */ - - p = strchr (p, ':'); - if (p == NULL) - { - bad_stab (orig); - return false; - } - - if (p[1] == ':') - break; - - if (! parse_stab_one_struct_field (dhandle, info, pp, p, fields + c, - staticsp)) - return false; - - ++c; - } - - fields[c] = DEBUG_FIELD_NULL; - - *retp = fields; - - return true; -} - -/* Special GNU C++ name. */ - -static boolean -parse_stab_cpp_abbrev (dhandle, info, pp, retp) - PTR dhandle; - struct stab_handle *info; - const char **pp; - debug_field *retp; -{ - const char *orig; - int cpp_abbrev; - debug_type context; - const char *name; - const char *typename; - debug_type type; - bfd_vma bitpos; - - *retp = DEBUG_FIELD_NULL; - - orig = *pp; - - if (**pp != 'v') - { - bad_stab (*pp); - return false; - } - ++*pp; - - cpp_abbrev = **pp; - ++*pp; - - /* At this point, *pp points to something like "22:23=*22...", where - the type number before the ':' is the "context" and everything - after is a regular type definition. Lookup the type, find it's - name, and construct the field name. */ - - context = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (context == DEBUG_TYPE_NULL) - return false; - - switch (cpp_abbrev) - { - case 'f': - /* $vf -- a virtual function table pointer. */ - name = "_vptr$"; - break; - case 'b': - /* $vb -- a virtual bsomethingorother */ - typename = debug_get_type_name (dhandle, context); - if (typename == NULL) - { - warn_stab (orig, "unnamed $vb type"); - typename = "FOO"; - } - name = concat ("_vb$", typename, (const char *) NULL); - break; - default: - warn_stab (orig, "unrecognized C++ abbreviation"); - name = "INVALID_CPLUSPLUS_ABBREV"; - break; - } - - if (**pp != ':') - { - bad_stab (orig); - return false; - } - ++*pp; - - type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - - bitpos = parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return false; - } - ++*pp; - - *retp = debug_make_field (dhandle, name, type, bitpos, 0, - DEBUG_VISIBILITY_PRIVATE); - if (*retp == DEBUG_FIELD_NULL) - return false; - - return true; -} - -/* Parse a single field in a struct or union. */ - -static boolean -parse_stab_one_struct_field (dhandle, info, pp, p, retp, staticsp) - PTR dhandle; - struct stab_handle *info; - const char **pp; - const char *p; - debug_field *retp; - boolean *staticsp; -{ - const char *orig; - char *name; - enum debug_visibility visibility; - debug_type type; - bfd_vma bitpos; - bfd_vma bitsize; - - orig = *pp; - - /* FIXME: gdb checks ARM_DEMANGLING here. */ - - name = savestring (*pp, p - *pp); - - *pp = p + 1; - - if (**pp != '/') - visibility = DEBUG_VISIBILITY_PUBLIC; - else - { - ++*pp; - switch (**pp) - { - case '0': - visibility = DEBUG_VISIBILITY_PRIVATE; - break; - case '1': - visibility = DEBUG_VISIBILITY_PROTECTED; - break; - case '2': - visibility = DEBUG_VISIBILITY_PUBLIC; - break; - default: - warn_stab (orig, "unknown visibility character for field"); - visibility = DEBUG_VISIBILITY_PUBLIC; - break; - } - ++*pp; - } - - type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (type == DEBUG_TYPE_NULL) - return false; - - if (**pp == ':') - { - char *varname; - - /* This is a static class member. */ - ++*pp; - p = strchr (*pp, ';'); - if (p == NULL) - { - bad_stab (orig); - return false; - } - - varname = savestring (*pp, p - *pp); - - *pp = p + 1; - - *retp = debug_make_static_member (dhandle, name, type, varname, - visibility); - *staticsp = true; - - return true; - } - - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - - bitpos = parse_number (pp, (boolean *) NULL); - if (**pp != ',') - { - bad_stab (orig); - return false; - } - ++*pp; - - bitsize = parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return false; - } - ++*pp; - - if (bitpos == 0 && bitsize == 0) - { - /* This can happen in two cases: (1) at least for gcc 2.4.5 or - so, it is a field which has been optimized out. The correct - stab for this case is to use VISIBILITY_IGNORE, but that is a - recent invention. (2) It is a 0-size array. For example - union { int num; char str[0]; } foo. Printing "<no value>" - for str in "p foo" is OK, since foo.str (and thus foo.str[3]) - will continue to work, and a 0-size array as a whole doesn't - have any contents to print. - - I suspect this probably could also happen with gcc -gstabs - (not -gstabs+) for static fields, and perhaps other C++ - extensions. Hopefully few people use -gstabs with gdb, since - it is intended for dbx compatibility. */ - visibility = DEBUG_VISIBILITY_IGNORE; - } - - /* FIXME: gdb does some stuff here to mark fields as unpacked. */ - - *retp = debug_make_field (dhandle, name, type, bitpos, bitsize, visibility); - - return true; -} - -/* Read member function stabs info for C++ classes. The form of each member - function data is: - - NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; - - An example with two member functions is: - - afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; - - For the case of overloaded operators, the format is op$::*.funcs, where - $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator - name (such as `+=') and `.' marks the end of the operator name. */ - -static boolean -parse_stab_members (dhandle, info, tagname, pp, typenums, retp) - PTR dhandle; - struct stab_handle *info; - const char *tagname; - const char **pp; - const int *typenums; - debug_method **retp; -{ - const char *orig; - debug_method *methods; - unsigned int c; - unsigned int alloc; - - *retp = NULL; - - orig = *pp; - - alloc = 0; - methods = NULL; - c = 0; - - while (**pp != ';') - { - const char *p; - char *name; - debug_method_variant *variants; - unsigned int cvars; - unsigned int allocvars; - debug_type look_ahead_type; - - p = strchr (*pp, ':'); - if (p == NULL || p[1] != ':') - break; - - /* FIXME: Some systems use something other than '$' here. */ - if ((*pp)[0] != 'o' || (*pp)[1] != 'p' || (*pp)[2] != '$') - { - name = savestring (*pp, p - *pp); - *pp = p + 2; - } - else - { - /* This is a completely wierd case. In order to stuff in the - names that might contain colons (the usual name delimiter), - Mike Tiemann defined a different name format which is - signalled if the identifier is "op$". In that case, the - format is "op$::XXXX." where XXXX is the name. This is - used for names like "+" or "=". YUUUUUUUK! FIXME! */ - *pp = p + 2; - for (p = *pp; *p != '.' && *p != '\0'; p++) - ; - if (*p != '.') - { - bad_stab (orig); - return false; - } - name = savestring (*pp, p - *pp); - *pp = p + 1; - } - - allocvars = 10; - variants = ((debug_method_variant *) - xmalloc (allocvars * sizeof *variants)); - cvars = 0; - - look_ahead_type = DEBUG_TYPE_NULL; - - do - { - debug_type type; - boolean stub; - char *argtypes; - enum debug_visibility visibility; - boolean constp, volatilep, staticp; - bfd_vma voffset; - debug_type context; - const char *physname; - boolean varargs; - - if (look_ahead_type != DEBUG_TYPE_NULL) - { - /* g++ version 1 kludge */ - type = look_ahead_type; - look_ahead_type = DEBUG_TYPE_NULL; - } - else - { - type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (type == DEBUG_TYPE_NULL) - return false; - if (**pp != ':') - { - bad_stab (orig); - return false; - } - } - - ++*pp; - p = strchr (*pp, ';'); - if (p == NULL) - { - bad_stab (orig); - return false; - } - - stub = false; - if (debug_get_type_kind (dhandle, type) == DEBUG_KIND_METHOD - && debug_get_parameter_types (dhandle, type, &varargs) == NULL) - stub = true; - - argtypes = savestring (*pp, p - *pp); - *pp = p + 1; - - switch (**pp) - { - case '0': - visibility = DEBUG_VISIBILITY_PRIVATE; - break; - case '1': - visibility = DEBUG_VISIBILITY_PROTECTED; - break; - default: - visibility = DEBUG_VISIBILITY_PUBLIC; - break; - } - ++*pp; - - constp = false; - volatilep = false; - switch (**pp) - { - case 'A': - /* Normal function. */ - ++*pp; - break; - case 'B': - /* const member function. */ - constp = true; - ++*pp; - break; - case 'C': - /* volatile member function. */ - volatilep = true; - ++*pp; - break; - case 'D': - /* const volatile member function. */ - constp = true; - volatilep = true; - ++*pp; - break; - case '*': - case '?': - case '.': - /* File compiled with g++ version 1; no information. */ - break; - default: - warn_stab (orig, "const/volatile indicator missing"); - break; - } - - staticp = false; - switch (**pp) - { - case '*': - /* virtual member function, followed by index. The sign - bit is supposedly set to distinguish - pointers-to-methods from virtual function indicies. */ - ++*pp; - voffset = parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return false; - } - ++*pp; - voffset &= 0x7fffffff; - - if (**pp == ';' || *pp == '\0') - { - /* Must be g++ version 1. */ - context = DEBUG_TYPE_NULL; - } - else - { - /* Figure out from whence this virtual function - came. It may belong to virtual function table of - one of its baseclasses. */ - look_ahead_type = parse_stab_type (dhandle, info, - (const char *) NULL, - pp, - (debug_type **) NULL); - if (**pp == ':') - { - /* g++ version 1 overloaded methods. */ - context = DEBUG_TYPE_NULL; - } - else - { - context = look_ahead_type; - look_ahead_type = DEBUG_TYPE_NULL; - if (**pp != ';') - { - bad_stab (orig); - return false; - } - ++*pp; - } - } - break; - - case '?': - /* static member function. */ - ++*pp; - staticp = true; - voffset = 0; - context = DEBUG_TYPE_NULL; - if (strncmp (argtypes, name, strlen (name)) != 0) - stub = true; - break; - - default: - warn_stab (orig, "member function type missing"); - voffset = 0; - context = DEBUG_TYPE_NULL; - break; - - case '.': - ++*pp; - voffset = 0; - context = DEBUG_TYPE_NULL; - break; - } - - /* If the type is not a stub, then the argtypes string is - the physical name of the function. Otherwise the - argtypes string is the mangled form of the argument - types, and the full type and the physical name must be - extracted from them. */ - if (! stub) - physname = argtypes; - else - { - debug_type class_type, return_type; - - class_type = stab_find_type (dhandle, info, typenums); - if (class_type == DEBUG_TYPE_NULL) - return false; - return_type = debug_get_return_type (dhandle, type); - if (return_type == DEBUG_TYPE_NULL) - { - bad_stab (orig); - return false; - } - type = parse_stab_argtypes (dhandle, info, class_type, name, - tagname, return_type, argtypes, - constp, volatilep, &physname); - if (type == DEBUG_TYPE_NULL) - return false; - } - - if (cvars + 1 >= allocvars) - { - allocvars += 10; - variants = ((debug_method_variant *) - xrealloc ((PTR) variants, - allocvars * sizeof *variants)); - } - - if (! staticp) - variants[cvars] = debug_make_method_variant (dhandle, physname, - type, visibility, - constp, volatilep, - voffset, context); - else - variants[cvars] = debug_make_static_method_variant (dhandle, - physname, - type, - visibility, - constp, - volatilep); - if (variants[cvars] == DEBUG_METHOD_VARIANT_NULL) - return false; - - ++cvars; - } - while (**pp != ';' && **pp != '\0'); - - variants[cvars] = DEBUG_METHOD_VARIANT_NULL; - - if (**pp != '\0') - ++*pp; - - if (c + 1 >= alloc) - { - alloc += 10; - methods = ((debug_method *) - xrealloc ((PTR) methods, alloc * sizeof *methods)); - } - - methods[c] = debug_make_method (dhandle, name, variants); - - ++c; - } - - if (methods != NULL) - methods[c] = DEBUG_METHOD_NULL; - - *retp = methods; - - return true; -} - -/* Parse a string representing argument types for a method. Stabs - tries to save space by packing argument types into a mangled - string. This string should give us enough information to extract - both argument types and the physical name of the function, given - the tag name. */ - -static debug_type -parse_stab_argtypes (dhandle, info, class_type, fieldname, tagname, - return_type, argtypes, constp, volatilep, pphysname) - PTR dhandle; - struct stab_handle *info; - debug_type class_type; - const char *fieldname; - const char *tagname; - debug_type return_type; - const char *argtypes; - boolean constp; - boolean volatilep; - const char **pphysname; -{ - boolean is_full_physname_constructor; - boolean is_constructor; - boolean is_destructor; - debug_type *args; - boolean varargs; - - /* Constructors are sometimes handled specially. */ - is_full_physname_constructor = ((argtypes[0] == '_' - && argtypes[1] == '_' - && (isdigit ((unsigned char) argtypes[2]) - || argtypes[2] == 'Q' - || argtypes[2] == 't')) - || strncmp (argtypes, "__ct", 4) == 0); - - is_constructor = (is_full_physname_constructor - || (tagname != NULL - && strcmp (fieldname, tagname) == 0)); - is_destructor = ((argtypes[0] == '_' - && (argtypes[1] == '$' || argtypes[1] == '.') - && argtypes[2] == '_') - || strncmp (argtypes, "__dt", 4) == 0); - - if (is_destructor || is_full_physname_constructor) - *pphysname = argtypes; - else - { - unsigned int len; - const char *const_prefix; - const char *volatile_prefix; - char buf[20]; - unsigned int mangled_name_len; - char *physname; - - len = tagname == NULL ? 0 : strlen (tagname); - const_prefix = constp ? "C" : ""; - volatile_prefix = volatilep ? "V" : ""; - - if (len == 0) - sprintf (buf, "__%s%s", const_prefix, volatile_prefix); - else if (tagname != NULL && strchr (tagname, '<') != NULL) - { - /* Template methods are fully mangled. */ - sprintf (buf, "__%s%s", const_prefix, volatile_prefix); - tagname = NULL; - len = 0; - } - else - sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); - - mangled_name_len = ((is_constructor ? 0 : strlen (fieldname)) - + strlen (buf) - + len - + strlen (argtypes) - + 1); - - if (fieldname[0] == 'o' - && fieldname[1] == 'p' - && (fieldname[2] == '$' || fieldname[2] == '.')) - { - const char *opname; - - opname = cplus_mangle_opname (fieldname + 3, 0); - if (opname == NULL) - { - fprintf (stderr, "No mangling for \"%s\"\n", fieldname); - return DEBUG_TYPE_NULL; - } - mangled_name_len += strlen (opname); - physname = (char *) xmalloc (mangled_name_len); - strncpy (physname, fieldname, 3); - strcpy (physname + 3, opname); - } - else - { - physname = (char *) xmalloc (mangled_name_len); - if (is_constructor) - physname[0] = '\0'; - else - strcpy (physname, fieldname); - } - - strcat (physname, buf); - if (tagname != NULL) - strcat (physname, tagname); - strcat (physname, argtypes); - - *pphysname = physname; - } - - if (*argtypes == '\0' || is_destructor) - { - args = (debug_type *) xmalloc (sizeof *args); - *args = NULL; - return debug_make_method_type (dhandle, return_type, class_type, args, - false); - } - - args = stab_demangle_argtypes (dhandle, info, *pphysname, &varargs); - if (args == NULL) - return DEBUG_TYPE_NULL; - - return debug_make_method_type (dhandle, return_type, class_type, args, - varargs); -} - -/* The tail end of stabs for C++ classes that contain a virtual function - pointer contains a tilde, a %, and a type number. - The type number refers to the base class (possibly this class itself) which - contains the vtable pointer for the current class. - - This function is called when we have parsed all the method declarations, - so we can look for the vptr base class info. */ - -static boolean -parse_stab_tilde_field (dhandle, info, pp, typenums, retvptrbase, retownvptr) - PTR dhandle; - struct stab_handle *info; - const char **pp; - const int *typenums; - debug_type *retvptrbase; - boolean *retownvptr; -{ - const char *orig; - const char *hold; - int vtypenums[2]; - - *retvptrbase = DEBUG_TYPE_NULL; - *retownvptr = false; - - orig = *pp; - - /* If we are positioned at a ';', then skip it. */ - if (**pp == ';') - ++*pp; - - if (**pp != '~') - return true; - - ++*pp; - - if (**pp == '=' || **pp == '+' || **pp == '-') - { - /* Obsolete flags that used to indicate the presence of - constructors and/or destructors. */ - ++*pp; - } - - if (**pp != '%') - return true; - - ++*pp; - - hold = *pp; - - /* The next number is the type number of the base class (possibly - our own class) which supplies the vtable for this class. */ - if (! parse_stab_type_number (pp, vtypenums)) - return false; - - if (vtypenums[0] == typenums[0] - && vtypenums[1] == typenums[1]) - *retownvptr = true; - else - { - debug_type vtype; - const char *p; - - *pp = hold; - - vtype = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - for (p = *pp; *p != ';' && *p != '\0'; p++) - ; - if (*p != ';') - { - bad_stab (orig); - return false; - } - - *retvptrbase = vtype; - - *pp = p + 1; - } - - return true; -} - -/* Read a definition of an array type. */ - -static debug_type -parse_stab_array_type (dhandle, info, pp, stringp) - PTR dhandle; - struct stab_handle *info; - const char **pp; - boolean stringp; -{ - const char *orig; - const char *p; - int typenums[2]; - debug_type index_type; - boolean adjustable; - bfd_signed_vma lower, upper; - debug_type element_type; - - /* Format of an array type: - "ar<index type>;lower;upper;<array_contents_type>". - OS9000: "arlower,upper;<array_contents_type>". - - Fortran adjustable arrays use Adigits or Tdigits for lower or upper; - for these, produce a type like float[][]. */ - - orig = *pp; - - /* FIXME: gdb checks os9k_stabs here. */ - - /* If the index type is type 0, we take it as int. */ - p = *pp; - if (! parse_stab_type_number (&p, typenums)) - return DEBUG_TYPE_NULL; - if (typenums[0] == 0 && typenums[1] == 0 && **pp != '=') - { - index_type = debug_find_named_type (dhandle, "int"); - if (index_type == DEBUG_TYPE_NULL) - { - index_type = debug_make_int_type (dhandle, 4, false); - if (index_type == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - } - *pp = p; - } - else - { - index_type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - } - - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - adjustable = false; - - if (! isdigit ((unsigned char) **pp) && **pp != '-') - { - ++*pp; - adjustable = true; - } - - lower = (bfd_signed_vma) parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - if (! isdigit ((unsigned char) **pp) && **pp != '-') - { - ++*pp; - adjustable = true; - } - - upper = (bfd_signed_vma) parse_number (pp, (boolean *) NULL); - if (**pp != ';') - { - bad_stab (orig); - return DEBUG_TYPE_NULL; - } - ++*pp; - - element_type = parse_stab_type (dhandle, info, (const char *) NULL, pp, - (debug_type **) NULL); - if (element_type == DEBUG_TYPE_NULL) - return DEBUG_TYPE_NULL; - - if (adjustable) - { - lower = 0; - upper = -1; - } - - return debug_make_array_type (dhandle, element_type, index_type, lower, - upper, stringp); -} - -/* This struct holds information about files we have seen using - N_BINCL. */ - -struct bincl_file -{ - /* The next N_BINCL file. */ - struct bincl_file *next; - /* The next N_BINCL on the stack. */ - struct bincl_file *next_stack; - /* The file name. */ - const char *name; - /* The hash value. */ - bfd_vma hash; - /* The file index. */ - unsigned int file; - /* The list of types defined in this file. */ - struct stab_types *file_types; -}; - -/* Start a new N_BINCL file, pushing it onto the stack. */ - -static void -push_bincl (info, name, hash) - struct stab_handle *info; - const char *name; - bfd_vma hash; -{ - struct bincl_file *n; - - n = (struct bincl_file *) xmalloc (sizeof *n); - n->next = info->bincl_list; - n->next_stack = info->bincl_stack; - n->name = name; - n->hash = hash; - n->file = info->files; - n->file_types = NULL; - info->bincl_list = n; - info->bincl_stack = n; - - ++info->files; - info->file_types = ((struct stab_types **) - xrealloc ((PTR) info->file_types, - (info->files - * sizeof *info->file_types))); - info->file_types[n->file] = NULL; -} - -/* Finish an N_BINCL file, at an N_EINCL, popping the name off the - stack. */ - -static const char * -pop_bincl (info) - struct stab_handle *info; -{ - struct bincl_file *o; - - o = info->bincl_stack; - if (o == NULL) - return info->main_filename; - info->bincl_stack = o->next_stack; - - o->file_types = info->file_types[o->file]; - - if (info->bincl_stack == NULL) - return info->main_filename; - return info->bincl_stack->name; -} - -/* Handle an N_EXCL: get the types from the corresponding N_BINCL. */ - -static boolean -find_excl (info, name, hash) - struct stab_handle *info; - const char *name; - bfd_vma hash; -{ - struct bincl_file *l; - - ++info->files; - info->file_types = ((struct stab_types **) - xrealloc ((PTR) info->file_types, - (info->files - * sizeof *info->file_types))); - - for (l = info->bincl_list; l != NULL; l = l->next) - if (l->hash == hash && strcmp (l->name, name) == 0) - break; - if (l == NULL) - { - warn_stab (name, "Undefined N_EXCL"); - info->file_types[info->files - 1] = NULL; - return true; - } - - info->file_types[info->files - 1] = l->file_types; - - return true; -} - -/* Handle a variable definition. gcc emits variable definitions for a - block before the N_LBRAC, so we must hold onto them until we see - it. The SunPRO compiler emits variable definitions after the - N_LBRAC, so we can call debug_record_variable immediately. */ - -static boolean -stab_record_variable (dhandle, info, name, type, kind, val) - PTR dhandle; - struct stab_handle *info; - const char *name; - debug_type type; - enum debug_var_kind kind; - bfd_vma val; -{ - struct stab_pending_var *v; - - if ((kind == DEBUG_GLOBAL || kind == DEBUG_STATIC) - || ! info->within_function - || (info->gcc_compiled == 0 && info->n_opt_found)) - return debug_record_variable (dhandle, name, type, kind, val); - - v = (struct stab_pending_var *) xmalloc (sizeof *v); - memset (v, 0, sizeof *v); - - v->next = info->pending; - v->name = name; - v->type = type; - v->kind = kind; - v->val = val; - info->pending = v; - - return true; -} - -/* Emit pending variable definitions. This is called after we see the - N_LBRAC that starts the block. */ - -static boolean -stab_emit_pending_vars (dhandle, info) - PTR dhandle; - struct stab_handle *info; -{ - struct stab_pending_var *v; - - v = info->pending; - while (v != NULL) - { - struct stab_pending_var *next; - - if (! debug_record_variable (dhandle, v->name, v->type, v->kind, v->val)) - return false; - - next = v->next; - free (v); - v = next; - } - - info->pending = NULL; - - return true; -} - -/* Find the slot for a type in the database. */ - -static debug_type * -stab_find_slot (info, typenums) - struct stab_handle *info; - const int *typenums; -{ - int filenum; - int index; - struct stab_types **ps; - - filenum = typenums[0]; - index = typenums[1]; - - if (filenum < 0 || (unsigned int) filenum >= info->files) - { - fprintf (stderr, "Type file number %d out of range\n", filenum); - return NULL; - } - if (index < 0) - { - fprintf (stderr, "Type index number %d out of range\n", index); - return NULL; - } - - ps = info->file_types + filenum; - - while (index >= STAB_TYPES_SLOTS) - { - if (*ps == NULL) - { - *ps = (struct stab_types *) xmalloc (sizeof **ps); - memset (*ps, 0, sizeof **ps); - } - ps = &(*ps)->next; - index -= STAB_TYPES_SLOTS; - } - if (*ps == NULL) - { - *ps = (struct stab_types *) xmalloc (sizeof **ps); - memset (*ps, 0, sizeof **ps); - } - - return (*ps)->types + index; -} - -/* Find a type given a type number. If the type has not been - allocated yet, create an indirect type. */ - -static debug_type -stab_find_type (dhandle, info, typenums) - PTR dhandle; - struct stab_handle *info; - const int *typenums; -{ - debug_type *slot; - - if (typenums[0] == 0 && typenums[1] < 0) - { - /* A negative type number indicates an XCOFF builtin type. */ - return stab_xcoff_builtin_type (dhandle, info, typenums[1]); - } - - slot = stab_find_slot (info, typenums); - if (slot == NULL) - return DEBUG_TYPE_NULL; - - if (*slot == DEBUG_TYPE_NULL) - return debug_make_indirect_type (dhandle, slot, (const char *) NULL); - - return *slot; -} - -/* Record that a given type number refers to a given type. */ - -static boolean -stab_record_type (dhandle, info, typenums, type) - PTR dhandle; - struct stab_handle *info; - const int *typenums; - debug_type type; -{ - debug_type *slot; - - slot = stab_find_slot (info, typenums); - if (slot == NULL) - return false; - - /* gdb appears to ignore type redefinitions, so we do as well. */ - - *slot = type; - - return true; -} - -/* Return an XCOFF builtin type. */ - -static debug_type -stab_xcoff_builtin_type (dhandle, info, typenum) - PTR dhandle; - struct stab_handle *info; - int typenum; -{ - debug_type rettype; - const char *name; - - if (typenum >= 0 || typenum < -XCOFF_TYPE_COUNT) - { - fprintf (stderr, "Unrecognized XCOFF type %d\n", typenum); - return DEBUG_TYPE_NULL; - } - if (info->xcoff_types[-typenum] != NULL) - return info->xcoff_types[-typenum]; - - switch (-typenum) - { - case 1: - /* The size of this and all the other types are fixed, defined - by the debugging format. */ - name = "int"; - rettype = debug_make_int_type (dhandle, 4, false); - break; - case 2: - name = "char"; - rettype = debug_make_int_type (dhandle, 1, false); - break; - case 3: - name = "short"; - rettype = debug_make_int_type (dhandle, 2, false); - break; - case 4: - name = "long"; - rettype = debug_make_int_type (dhandle, 4, false); - break; - case 5: - name = "unsigned char"; - rettype = debug_make_int_type (dhandle, 1, true); - break; - case 6: - name = "signed char"; - rettype = debug_make_int_type (dhandle, 1, false); - break; - case 7: - name = "unsigned short"; - rettype = debug_make_int_type (dhandle, 2, true); - break; - case 8: - name = "unsigned int"; - rettype = debug_make_int_type (dhandle, 4, true); - break; - case 9: - name = "unsigned"; - rettype = debug_make_int_type (dhandle, 4, true); - case 10: - name = "unsigned long"; - rettype = debug_make_int_type (dhandle, 4, true); - break; - case 11: - name = "void"; - rettype = debug_make_void_type (dhandle); - break; - case 12: - /* IEEE single precision (32 bit). */ - name = "float"; - rettype = debug_make_float_type (dhandle, 4); - break; - case 13: - /* IEEE double precision (64 bit). */ - name = "double"; - rettype = debug_make_float_type (dhandle, 8); - break; - case 14: - /* This is an IEEE double on the RS/6000, and different machines - with different sizes for "long double" should use different - negative type numbers. See stabs.texinfo. */ - name = "long double"; - rettype = debug_make_float_type (dhandle, 8); - break; - case 15: - name = "integer"; - rettype = debug_make_int_type (dhandle, 4, false); - break; - case 16: - name = "boolean"; - rettype = debug_make_bool_type (dhandle, 4); - break; - case 17: - name = "short real"; - rettype = debug_make_float_type (dhandle, 4); - break; - case 18: - name = "real"; - rettype = debug_make_float_type (dhandle, 8); - break; - case 19: - /* FIXME */ - name = "stringptr"; - rettype = NULL; - break; - case 20: - /* FIXME */ - name = "character"; - rettype = debug_make_int_type (dhandle, 1, true); - break; - case 21: - name = "logical*1"; - rettype = debug_make_bool_type (dhandle, 1); - break; - case 22: - name = "logical*2"; - rettype = debug_make_bool_type (dhandle, 2); - break; - case 23: - name = "logical*4"; - rettype = debug_make_bool_type (dhandle, 4); - break; - case 24: - name = "logical"; - rettype = debug_make_bool_type (dhandle, 4); - break; - case 25: - /* Complex type consisting of two IEEE single precision values. */ - name = "complex"; - rettype = debug_make_complex_type (dhandle, 8); - break; - case 26: - /* Complex type consisting of two IEEE double precision values. */ - name = "double complex"; - rettype = debug_make_complex_type (dhandle, 16); - break; - case 27: - name = "integer*1"; - rettype = debug_make_int_type (dhandle, 1, false); - break; - case 28: - name = "integer*2"; - rettype = debug_make_int_type (dhandle, 2, false); - break; - case 29: - name = "integer*4"; - rettype = debug_make_int_type (dhandle, 4, false); - break; - case 30: - /* FIXME */ - name = "wchar"; - rettype = debug_make_int_type (dhandle, 2, false); - break; - case 31: - name = "long long"; - rettype = debug_make_int_type (dhandle, 8, false); - break; - case 32: - name = "unsigned long long"; - rettype = debug_make_int_type (dhandle, 8, true); - break; - case 33: - name = "logical*8"; - rettype = debug_make_bool_type (dhandle, 8); - break; - case 34: - name = "integer*8"; - rettype = debug_make_int_type (dhandle, 8, false); - break; - default: - abort (); - } - - rettype = debug_name_type (dhandle, name, rettype); - - info->xcoff_types[-typenum] = rettype; - - return rettype; -} - -/* Find or create a tagged type. */ - -static debug_type -stab_find_tagged_type (dhandle, info, p, len, kind) - PTR dhandle; - struct stab_handle *info; - const char *p; - int len; - enum debug_type_kind kind; -{ - char *name; - debug_type dtype; - struct stab_tag *st; - - name = savestring (p, len); - - /* We pass DEBUG_KIND_ILLEGAL because we want all tags in the same - namespace. This is right for C, and I don't know how to handle - other languages. FIXME. */ - dtype = debug_find_tagged_type (dhandle, name, DEBUG_KIND_ILLEGAL); - if (dtype != DEBUG_TYPE_NULL) - { - free (name); - return dtype; - } - - /* We need to allocate an entry on the undefined tag list. */ - for (st = info->tags; st != NULL; st = st->next) - { - if (st->name[0] == name[0] - && strcmp (st->name, name) == 0) - { - if (st->kind == DEBUG_KIND_ILLEGAL) - st->kind = kind; - free (name); - break; - } - } - if (st == NULL) - { - st = (struct stab_tag *) xmalloc (sizeof *st); - memset (st, 0, sizeof *st); - - st->next = info->tags; - st->name = name; - st->kind = kind; - st->slot = DEBUG_TYPE_NULL; - st->type = debug_make_indirect_type (dhandle, &st->slot, name); - info->tags = st; - } - - return st->type; -} - -/* In order to get the correct argument types for a stubbed method, we - need to extract the argument types from a C++ mangled string. - Since the argument types can refer back to the return type, this - means that we must demangle the entire physical name. In gdb this - is done by calling cplus_demangle and running the results back - through the C++ expression parser. Since we have no expression - parser, we must duplicate much of the work of cplus_demangle here. - - We assume that GNU style demangling is used, since this is only - done for method stubs, and only g++ should output that form of - debugging information. */ - -/* This structure is used to hold a pointer to type information which - demangling a string. */ - -struct stab_demangle_typestring -{ - /* The start of the type. This is not null terminated. */ - const char *typestring; - /* The length of the type. */ - unsigned int len; -}; - -/* This structure is used to hold information while demangling a - string. */ - -struct stab_demangle_info -{ - /* The debugging information handle. */ - PTR dhandle; - /* The stab information handle. */ - struct stab_handle *info; - /* The array of arguments we are building. */ - debug_type *args; - /* Whether the method takes a variable number of arguments. */ - boolean varargs; - /* The array of types we have remembered. */ - struct stab_demangle_typestring *typestrings; - /* The number of typestrings. */ - unsigned int typestring_count; - /* The number of typestring slots we have allocated. */ - unsigned int typestring_alloc; -}; - -static void stab_bad_demangle PARAMS ((const char *)); -static unsigned int stab_demangle_count PARAMS ((const char **)); -static boolean stab_demangle_get_count - PARAMS ((const char **, unsigned int *)); -static boolean stab_demangle_prefix - PARAMS ((struct stab_demangle_info *, const char **)); -static boolean stab_demangle_function_name - PARAMS ((struct stab_demangle_info *, const char **, const char *)); -static boolean stab_demangle_signature - PARAMS ((struct stab_demangle_info *, const char **)); -static boolean stab_demangle_qualified - PARAMS ((struct stab_demangle_info *, const char **, debug_type *)); -static boolean stab_demangle_template - PARAMS ((struct stab_demangle_info *, const char **)); -static boolean stab_demangle_class - PARAMS ((struct stab_demangle_info *, const char **, const char **)); -static boolean stab_demangle_args - PARAMS ((struct stab_demangle_info *, const char **, debug_type **, - boolean *)); -static boolean stab_demangle_arg - PARAMS ((struct stab_demangle_info *, const char **, debug_type **, - unsigned int *, unsigned int *)); -static boolean stab_demangle_type - PARAMS ((struct stab_demangle_info *, const char **, debug_type *)); -static boolean stab_demangle_fund_type - PARAMS ((struct stab_demangle_info *, const char **, debug_type *)); -static boolean stab_demangle_remember_type - PARAMS ((struct stab_demangle_info *, const char *, int)); - -/* Warn about a bad demangling. */ - -static void -stab_bad_demangle (s) - const char *s; -{ - fprintf (stderr, "bad mangled name `%s'\n", s); -} - -/* Get a count from a stab string. */ - -static unsigned int -stab_demangle_count (pp) - const char **pp; -{ - unsigned int count; - - count = 0; - while (isdigit ((unsigned char) **pp)) - { - count *= 10; - count += **pp - '0'; - ++*pp; - } - return count; -} - -/* Require a count in a string. The count may be multiple digits, in - which case it must end in an underscore. */ - -static boolean -stab_demangle_get_count (pp, pi) - const char **pp; - unsigned int *pi; -{ - if (! isdigit ((unsigned char) **pp)) - return false; - - *pi = **pp - '0'; - ++*pp; - if (isdigit ((unsigned char) **pp)) - { - unsigned int count; - const char *p; - - count = *pi; - p = *pp; - do - { - count *= 10; - count += *p - '0'; - ++p; - } - while (isdigit ((unsigned char) *p)); - if (*p == '_') - { - *pp = p + 1; - *pi = count; - } - } - - return true; -} - -/* This function demangles a physical name, returning a NULL - terminated array of argument types. */ - -static debug_type * -stab_demangle_argtypes (dhandle, info, physname, pvarargs) - PTR dhandle; - struct stab_handle *info; - const char *physname; - boolean *pvarargs; -{ - struct stab_demangle_info minfo; - - minfo.dhandle = dhandle; - minfo.info = info; - minfo.args = NULL; - minfo.varargs = false; - minfo.typestring_alloc = 10; - minfo.typestrings = ((struct stab_demangle_typestring *) - xmalloc (minfo.typestring_alloc - * sizeof *minfo.typestrings)); - minfo.typestring_count = 0; - - /* cplus_demangle checks for special GNU mangled forms, but we can't - see any of them in mangled method argument types. */ - - if (! stab_demangle_prefix (&minfo, &physname)) - goto error_return; - - if (*physname != '\0') - { - if (! stab_demangle_signature (&minfo, &physname)) - goto error_return; - } - - free (minfo.typestrings); - minfo.typestrings = NULL; - - if (minfo.args == NULL) - fprintf (stderr, "no argument types in mangled string\n"); - - *pvarargs = minfo.varargs; - return minfo.args; - - error_return: - if (minfo.typestrings != NULL) - free (minfo.typestrings); - return NULL; -} - -/* Demangle the prefix of the mangled name. */ - -static boolean -stab_demangle_prefix (minfo, pp) - struct stab_demangle_info *minfo; - const char **pp; -{ - const char *scan; - unsigned int i; - - /* cplus_demangle checks for global constructors and destructors, - but we can't see them in mangled argument types. */ - - /* Look for `__'. */ - scan = *pp; - do - { - scan = strchr (scan, '_'); - } - while (scan != NULL && *++scan != '_'); - - if (scan == NULL) - { - stab_bad_demangle (*pp); - return false; - } - - --scan; - - /* We found `__'; move ahead to the last contiguous `__' pair. */ - i = strspn (scan, "_"); - if (i > 2) - scan += i - 2; - - if (scan == *pp - && (isdigit ((unsigned char) scan[2]) - || scan[2] == 'Q' - || scan[2] == 't')) - { - /* This is a GNU style constructor name. */ - *pp = scan + 2; - return true; - } - else if (scan == *pp - && ! isdigit ((unsigned char) scan[2]) - && scan[2] != 't') - { - /* Look for the `__' that separates the prefix from the - signature. */ - while (*scan == '_') - ++scan; - scan = strstr (scan, "__"); - if (scan == NULL || scan[2] == '\0') - { - stab_bad_demangle (*pp); - return false; - } - - return stab_demangle_function_name (minfo, pp, scan); - } - else if (scan[2] != '\0') - { - /* The name doesn't start with `__', but it does contain `__'. */ - return stab_demangle_function_name (minfo, pp, scan); - } - else - { - stab_bad_demangle (*pp); - return false; - } - /*NOTREACHED*/ -} - -/* Demangle a function name prefix. The scan argument points to the - double underscore which separates the function name from the - signature. */ - -static boolean -stab_demangle_function_name (minfo, pp, scan) - struct stab_demangle_info *minfo; - const char **pp; - const char *scan; -{ - const char *name; - - /* The string from *pp to scan is the name of the function. We - don't care about the name, since we just looking for argument - types. However, for conversion operators, the name may include a - type which we must remember in order to handle backreferences. */ - - name = *pp; - *pp = scan + 2; - - if (*pp - name >= 5 - && strncmp (name, "type", 4) == 0 - && (name[4] == '$' || name[4] == '.')) - { - const char *tem; - - /* This is a type conversion operator. */ - tem = name + 5; - if (! stab_demangle_type (minfo, &tem, (debug_type *) NULL)) - return false; - } - else if (name[0] == '_' - && name[1] == '_' - && name[2] == 'o' - && name[3] == 'p') - { - const char *tem; - - /* This is a type conversion operator. */ - tem = name + 4; - if (! stab_demangle_type (minfo, &tem, (debug_type *) NULL)) - return false; - } - - return true; -} - -/* Demangle the signature. This is where the argument types are - found. */ - -static boolean -stab_demangle_signature (minfo, pp) - struct stab_demangle_info *minfo; - const char **pp; -{ - const char *orig; - boolean expect_func, func_done; - const char *hold; - - orig = *pp; - - expect_func = false; - func_done = false; - hold = NULL; - - while (**pp != '\0') - { - switch (**pp) - { - case 'Q': - hold = *pp; - if (! stab_demangle_qualified (minfo, pp, (debug_type *) NULL) - || ! stab_demangle_remember_type (minfo, hold, *pp - hold)) - return false; - expect_func = true; - hold = NULL; - break; - - case 'S': - /* Static member function. FIXME: Can this happen? */ - if (hold == NULL) - hold = *pp; - ++*pp; - break; - - case 'C': - /* Const member function. */ - if (hold == NULL) - hold = *pp; - ++*pp; - break; - - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - if (hold == NULL) - hold = *pp; - if (! stab_demangle_class (minfo, pp, (const char **) NULL) - || ! stab_demangle_remember_type (minfo, hold, *pp - hold)) - return false; - expect_func = true; - hold = NULL; - break; - - case 'F': - /* Function. I don't know if this actually happens with g++ - output. */ - hold = NULL; - func_done = true; - ++*pp; - if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs)) - return false; - break; - - case 't': - /* Template. */ - if (hold == NULL) - hold = *pp; - if (! stab_demangle_template (minfo, pp) - || ! stab_demangle_remember_type (minfo, hold, *pp - hold)) - return false; - hold = NULL; - expect_func = true; - break; - - case '_': - /* At the outermost level, we cannot have a return type - specified, so if we run into another '_' at this point we - are dealing with a mangled name that is either bogus, or - has been mangled by some algorithm we don't know how to - deal with. So just reject the entire demangling. */ - stab_bad_demangle (orig); - return false; - - default: - /* Assume we have stumbled onto the first outermost function - argument token, and start processing args. */ - func_done = true; - if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs)) - return false; - break; - } - - if (expect_func) - { - func_done = true; - if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs)) - return false; - } - } - - if (! func_done) - { - /* With GNU style demangling, bar__3foo is 'foo::bar(void)', and - bar__3fooi is 'foo::bar(int)'. We get here when we find the - first case, and need to ensure that the '(void)' gets added - to the current declp. */ - if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs)) - return false; - } - - return true; -} - -/* Demangle a qualified name, such as "Q25Outer5Inner" which is the - mangled form of "Outer::Inner". */ - -static boolean -stab_demangle_qualified (minfo, pp, ptype) - struct stab_demangle_info *minfo; - const char **pp; - debug_type *ptype; -{ - const char *orig; - const char *p; - unsigned int qualifiers; - debug_type context; - - orig = *pp; - - switch ((*pp)[1]) - { - case '_': - /* GNU mangled name with more than 9 classes. The count is - preceded by an underscore (to distinguish it from the <= 9 - case) and followed by an underscore. */ - p = *pp + 2; - if (! isdigit ((unsigned char) *p) || *p == '0') - { - stab_bad_demangle (orig); - return false; - } - qualifiers = atoi (p); - while (isdigit ((unsigned char) *p)) - ++p; - if (*p != '_') - { - stab_bad_demangle (orig); - return false; - } - *pp = p + 1; - break; - - case '1': case '2': case '3': case '4': case '5': - case '6': case '7': case '8': case '9': - qualifiers = (*pp)[1] - '0'; - /* Skip an optional underscore after the count. */ - if ((*pp)[2] == '_') - ++*pp; - *pp += 2; - break; - - case '0': - default: - stab_bad_demangle (orig); - return false; - } - - context = DEBUG_TYPE_NULL; - - /* Pick off the names. */ - while (qualifiers-- > 0) - { - if (**pp == '_') - ++*pp; - if (**pp == 't') - { - /* FIXME: I don't know how to handle the ptype != NULL case - here. */ - if (! stab_demangle_template (minfo, pp)) - return false; - } - else - { - unsigned int len; - - len = stab_demangle_count (pp); - if (strlen (*pp) < len) - { - stab_bad_demangle (orig); - return false; - } - - if (ptype != NULL) - { - const debug_field *fields; - - fields = NULL; - if (context != DEBUG_TYPE_NULL) - fields = debug_get_fields (minfo->dhandle, context); - - context = DEBUG_TYPE_NULL; - - if (fields != NULL) - { - char *name; - - /* Try to find the type by looking through the - fields of context until we find a field with the - same type. This ought to work for a class - defined within a class, but it won't work for, - e.g., an enum defined within a class. stabs does - not give us enough information to figure out the - latter case. */ - - name = savestring (*pp, len); - - for (; *fields != DEBUG_FIELD_NULL; fields++) - { - debug_type ft; - const char *dn; - - ft = debug_get_field_type (minfo->dhandle, *fields); - if (ft == NULL) - return false; - dn = debug_get_type_name (minfo->dhandle, ft); - if (dn != NULL && strcmp (dn, name) == 0) - { - context = ft; - break; - } - } - - free (name); - } - - if (context == DEBUG_TYPE_NULL) - { - /* We have to fall back on finding the type by name. - If there are more types to come, then this must - be a class. Otherwise, it could be anything. */ - - if (qualifiers == 0) - { - char *name; - - name = savestring (*pp, len); - context = debug_find_named_type (minfo->dhandle, - name); - free (name); - } - - if (context == DEBUG_TYPE_NULL) - { - context = stab_find_tagged_type (minfo->dhandle, - minfo->info, - *pp, len, - (qualifiers == 0 - ? DEBUG_KIND_ILLEGAL - : DEBUG_KIND_CLASS)); - if (context == DEBUG_TYPE_NULL) - return false; - } - } - } - - *pp += len; - } - } - - if (ptype != NULL) - *ptype = context; - - return true; -} - -/* Demangle a template. */ - -static boolean -stab_demangle_template (minfo, pp) - struct stab_demangle_info *minfo; - const char **pp; -{ - const char *orig; - unsigned int r, i; - - orig = *pp; - - ++*pp; - - /* Skip the template name. */ - r = stab_demangle_count (pp); - if (r == 0 || strlen (*pp) < r) - { - stab_bad_demangle (orig); - return false; - } - *pp += r; - - /* Get the size of the parameter list. */ - if (stab_demangle_get_count (pp, &r) == 0) - { - stab_bad_demangle (orig); - return false; - } - - for (i = 0; i < r; i++) - { - if (**pp == 'Z') - { - /* This is a type parameter. */ - ++*pp; - if (! stab_demangle_type (minfo, pp, (debug_type *) NULL)) - return false; - } - else - { - const char *old_p; - boolean pointerp, realp, integralp, charp, boolp; - boolean done; - - old_p = *pp; - pointerp = false; - realp = false; - integralp = false; - charp = false; - boolp = false; - done = false; - - /* This is a value parameter. */ - - if (! stab_demangle_type (minfo, pp, (debug_type *) NULL)) - return false; - - while (*old_p != '\0' && ! done) - { - switch (*old_p) - { - case 'P': - case 'p': - case 'R': - pointerp = true; - done = true; - break; - case 'C': /* Const. */ - case 'S': /* Signed. */ - case 'U': /* Unsigned. */ - case 'V': /* Volatile. */ - case 'F': /* Function. */ - case 'M': /* Member function. */ - case 'O': /* ??? */ - ++old_p; - break; - case 'Q': /* Qualified name. */ - integralp = true; - done = true; - break; - case 'T': /* Remembered type. */ - abort (); - case 'v': /* Void. */ - abort (); - case 'x': /* Long long. */ - case 'l': /* Long. */ - case 'i': /* Int. */ - case 's': /* Short. */ - case 'w': /* Wchar_t. */ - integralp = true; - done = true; - break; - case 'b': /* Bool. */ - boolp = true; - done = true; - break; - case 'c': /* Char. */ - charp = true; - done = true; - break; - case 'r': /* Long double. */ - case 'd': /* Double. */ - case 'f': /* Float. */ - realp = true; - done = true; - break; - default: - /* Assume it's a user defined integral type. */ - integralp = true; - done = true; - break; - } - } - - if (integralp) - { - if (**pp == 'm') - ++*pp; - while (isdigit ((unsigned char) **pp)) - ++*pp; - } - else if (charp) - { - unsigned int val; - - if (**pp == 'm') - ++*pp; - val = stab_demangle_count (pp); - if (val == 0) - { - stab_bad_demangle (orig); - return false; - } - } - else if (boolp) - { - unsigned int val; - - val = stab_demangle_count (pp); - if (val != 0 && val != 1) - { - stab_bad_demangle (orig); - return false; - } - } - else if (realp) - { - if (**pp == 'm') - ++*pp; - while (isdigit ((unsigned char) **pp)) - ++*pp; - if (**pp == '.') - { - ++*pp; - while (isdigit ((unsigned char) **pp)) - ++*pp; - } - if (**pp == 'e') - { - ++*pp; - while (isdigit ((unsigned char) **pp)) - ++*pp; - } - } - else if (pointerp) - { - unsigned int len; - - if (! stab_demangle_get_count (pp, &len)) - { - stab_bad_demangle (orig); - return false; - } - *pp += len; - } - } - } - - return true; -} - -/* Demangle a class name. */ - -static boolean -stab_demangle_class (minfo, pp, pstart) - struct stab_demangle_info *minfo; - const char **pp; - const char **pstart; -{ - const char *orig; - unsigned int n; - - orig = *pp; - - n = stab_demangle_count (pp); - if (strlen (*pp) < n) - { - stab_bad_demangle (orig); - return false; - } - - if (pstart != NULL) - *pstart = *pp; - - *pp += n; - - return true; -} - -/* Demangle function arguments. If the pargs argument is not NULL, it - is set to a NULL terminated array holding the arguments. */ - -static boolean -stab_demangle_args (minfo, pp, pargs, pvarargs) - struct stab_demangle_info *minfo; - const char **pp; - debug_type **pargs; - boolean *pvarargs; -{ - const char *orig; - unsigned int alloc, count; - - orig = *pp; - - alloc = 10; - if (pargs != NULL) - { - *pargs = (debug_type *) xmalloc (alloc * sizeof **pargs); - *pvarargs = false; - } - count = 0; - - while (**pp != '_' && **pp != '\0' && **pp != 'e') - { - if (**pp == 'N' || **pp == 'T') - { - char temptype; - unsigned int r, t; - - temptype = **pp; - ++*pp; - - if (temptype == 'T') - r = 1; - else - { - if (! stab_demangle_get_count (pp, &r)) - { - stab_bad_demangle (orig); - return false; - } - } - - if (! stab_demangle_get_count (pp, &t)) - { - stab_bad_demangle (orig); - return false; - } - - if (t >= minfo->typestring_count) - { - stab_bad_demangle (orig); - return false; - } - while (r-- > 0) - { - const char *tem; - - tem = minfo->typestrings[t].typestring; - if (! stab_demangle_arg (minfo, &tem, pargs, &count, &alloc)) - return false; - } - } - else - { - if (! stab_demangle_arg (minfo, pp, pargs, &count, &alloc)) - return false; - } - } - - if (pargs != NULL) - (*pargs)[count] = DEBUG_TYPE_NULL; - - if (**pp == 'e') - { - if (pargs != NULL) - *pvarargs = true; - ++*pp; - } - - return true; -} - -/* Demangle a single argument. */ - -static boolean -stab_demangle_arg (minfo, pp, pargs, pcount, palloc) - struct stab_demangle_info *minfo; - const char **pp; - debug_type **pargs; - unsigned int *pcount; - unsigned int *palloc; -{ - const char *start; - debug_type type; - - start = *pp; - if (! stab_demangle_type (minfo, pp, - pargs == NULL ? (debug_type *) NULL : &type) - || ! stab_demangle_remember_type (minfo, start, *pp - start)) - return false; - - if (pargs != NULL) - { - if (type == DEBUG_TYPE_NULL) - return false; - - if (*pcount + 1 >= *palloc) - { - *palloc += 10; - *pargs = ((debug_type *) - xrealloc (*pargs, *palloc * sizeof **pargs)); - } - (*pargs)[*pcount] = type; - ++*pcount; - } - - return true; -} - -/* Demangle a type. If the ptype argument is not NULL, *ptype is set - to the newly allocated type. */ - -static boolean -stab_demangle_type (minfo, pp, ptype) - struct stab_demangle_info *minfo; - const char **pp; - debug_type *ptype; -{ - const char *orig; - - orig = *pp; - - switch (**pp) - { - case 'P': - case 'p': - /* A pointer type. */ - ++*pp; - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - if (ptype != NULL) - *ptype = debug_make_pointer_type (minfo->dhandle, *ptype); - break; - - case 'R': - /* A reference type. */ - ++*pp; - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - if (ptype != NULL) - *ptype = debug_make_reference_type (minfo->dhandle, *ptype); - break; - - case 'A': - /* An array. */ - { - unsigned long high; - - ++*pp; - high = 0; - while (**pp != '\0' && **pp != '_') - { - if (! isdigit ((unsigned char) **pp)) - { - stab_bad_demangle (orig); - return false; - } - high *= 10; - high += **pp - '0'; - ++*pp; - } - if (**pp != '_') - { - stab_bad_demangle (orig); - return false; - } - ++*pp; - - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - if (ptype != NULL) - { - debug_type int_type; - - int_type = debug_find_named_type (minfo->dhandle, "int"); - if (int_type == NULL) - int_type = debug_make_int_type (minfo->dhandle, 4, false); - *ptype = debug_make_array_type (minfo->dhandle, *ptype, int_type, - 0, high, false); - } - } - break; - - case 'T': - /* A back reference to a remembered type. */ - { - unsigned int i; - const char *p; - - ++*pp; - if (! stab_demangle_get_count (pp, &i)) - { - stab_bad_demangle (orig); - return false; - } - if (i >= minfo->typestring_count) - { - stab_bad_demangle (orig); - return false; - } - p = minfo->typestrings[i].typestring; - if (! stab_demangle_type (minfo, &p, ptype)) - return false; - } - break; - - case 'F': - /* A function. */ - { - debug_type *args; - boolean varargs; - - ++*pp; - if (! stab_demangle_args (minfo, pp, - (ptype == NULL - ? (debug_type **) NULL - : &args), - (ptype == NULL - ? (boolean *) NULL - : &varargs))) - return false; - if (**pp != '_') - { - /* cplus_demangle will accept a function without a return - type, but I don't know when that will happen, or what - to do if it does. */ - stab_bad_demangle (orig); - return false; - } - ++*pp; - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - if (ptype != NULL) - *ptype = debug_make_function_type (minfo->dhandle, *ptype, args, - varargs); - - } - break; - - case 'M': - case 'O': - { - boolean memberp, constp, volatilep; - debug_type *args; - boolean varargs; - unsigned int n; - const char *name; - - memberp = **pp == 'M'; - constp = false; - volatilep = false; - args = NULL; - varargs = false; - - ++*pp; - if (! isdigit ((unsigned char) **pp)) - { - stab_bad_demangle (orig); - return false; - } - n = stab_demangle_count (pp); - if (strlen (*pp) < n) - { - stab_bad_demangle (orig); - return false; - } - name = *pp; - *pp += n; - - if (memberp) - { - if (**pp == 'C') - { - constp = true; - ++*pp; - } - else if (**pp == 'V') - { - volatilep = true; - ++*pp; - } - if (**pp != 'F') - { - stab_bad_demangle (orig); - return false; - } - ++*pp; - if (! stab_demangle_args (minfo, pp, - (ptype == NULL - ? (debug_type **) NULL - : &args), - (ptype == NULL - ? (boolean *) NULL - : &varargs))) - return false; - } - - if (**pp != '_') - { - stab_bad_demangle (orig); - return false; - } - ++*pp; - - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - - if (ptype != NULL) - { - debug_type class_type; - - class_type = stab_find_tagged_type (minfo->dhandle, minfo->info, - name, (int) n, - DEBUG_KIND_CLASS); - if (class_type == DEBUG_TYPE_NULL) - return false; - - if (! memberp) - *ptype = debug_make_offset_type (minfo->dhandle, class_type, - *ptype); - else - { - /* FIXME: We have no way to record constp or - volatilep. */ - *ptype = debug_make_method_type (minfo->dhandle, *ptype, - class_type, args, varargs); - } - } - } - break; - - case 'G': - ++*pp; - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - break; - - case 'C': - ++*pp; - if (! stab_demangle_type (minfo, pp, ptype)) - return false; - if (ptype != NULL) - *ptype = debug_make_const_type (minfo->dhandle, *ptype); - break; - - case 'Q': - { - const char *hold; - - hold = *pp; - if (! stab_demangle_qualified (minfo, pp, ptype)) - return false; - } - break; - - default: - if (! stab_demangle_fund_type (minfo, pp, ptype)) - return false; - break; - } - - return true; -} - -/* Demangle a fundamental type. If the ptype argument is not NULL, - *ptype is set to the newly allocated type. */ - -static boolean -stab_demangle_fund_type (minfo, pp, ptype) - struct stab_demangle_info *minfo; - const char **pp; - debug_type *ptype; -{ - const char *orig; - boolean constp, volatilep, unsignedp, signedp; - boolean done; - - orig = *pp; - - constp = false; - volatilep = false; - unsignedp = false; - signedp = false; - - done = false; - while (! done) - { - switch (**pp) - { - case 'C': - constp = true; - ++*pp; - break; - - case 'U': - unsignedp = true; - ++*pp; - break; - - case 'S': - signedp = true; - ++*pp; - break; - - case 'V': - volatilep = true; - ++*pp; - break; - - default: - done = true; - break; - } - } - - switch (**pp) - { - case '\0': - case '_': - /* cplus_demangle permits this, but I don't know what it means. */ - stab_bad_demangle (orig); - break; - - case 'v': /* void */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "void"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_void_type (minfo->dhandle); - } - ++*pp; - break; - - case 'x': /* long long */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, - (unsignedp - ? "long long unsigned int" - : "long long int")); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 8, unsignedp); - } - ++*pp; - break; - - case 'l': /* long */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, - (unsignedp - ? "long unsigned int" - : "long int")); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 4, unsignedp); - } - ++*pp; - break; - - case 'i': /* int */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, - (unsignedp - ? "unsigned int" - : "int")); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 4, unsignedp); - } - ++*pp; - break; - - case 's': /* short */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, - (unsignedp - ? "short unsigned int" - : "short int")); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 2, unsignedp); - } - ++*pp; - break; - - case 'b': /* bool */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "bool"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_bool_type (minfo->dhandle, 4); - } - ++*pp; - break; - - case 'c': /* char */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, - (unsignedp - ? "unsigned char" - : (signedp - ? "signed char" - : "char"))); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 1, unsignedp); - } - ++*pp; - break; - - case 'w': /* wchar_t */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "__wchar_t"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_int_type (minfo->dhandle, 2, true); - } - ++*pp; - break; - - case 'r': /* long double */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "long double"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_float_type (minfo->dhandle, 8); - } - ++*pp; - break; - - case 'd': /* double */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "double"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_float_type (minfo->dhandle, 8); - } - ++*pp; - break; - - case 'f': /* float */ - if (ptype != NULL) - { - *ptype = debug_find_named_type (minfo->dhandle, "float"); - if (*ptype == DEBUG_TYPE_NULL) - *ptype = debug_make_float_type (minfo->dhandle, 4); - } - ++*pp; - break; - - case 'G': - ++*pp; - if (! isdigit ((unsigned char) **pp)) - { - stab_bad_demangle (orig); - return false; - } - /* Fall through. */ - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - { - const char *hold; - - if (! stab_demangle_class (minfo, pp, &hold)) - return false; - if (ptype != NULL) - { - char *name; - - name = savestring (hold, *pp - hold); - *ptype = debug_find_named_type (minfo->dhandle, name); - if (*ptype == DEBUG_TYPE_NULL) - { - /* FIXME: It is probably incorrect to assume that - undefined types are tagged types. */ - *ptype = stab_find_tagged_type (minfo->dhandle, minfo->info, - hold, *pp - hold, - DEBUG_KIND_ILLEGAL); - } - free (name); - } - } - break; - - case 't': - if (! stab_demangle_template (minfo, pp)) - return false; - if (ptype != NULL) - { - debug_type t; - - /* FIXME: I really don't know how a template should be - represented in the current type system. Perhaps the - template should be demangled into a string, and the type - should be represented as a named type. However, I don't - know what the base type of the named type should be. */ - t = debug_make_void_type (minfo->dhandle); - t = debug_make_pointer_type (minfo->dhandle, t); - t = debug_name_type (minfo->dhandle, "TEMPLATE", t); - *ptype = t; - } - break; - - default: - stab_bad_demangle (orig); - return false; - } - - if (ptype != NULL) - { - if (constp) - *ptype = debug_make_const_type (minfo->dhandle, *ptype); - if (volatilep) - *ptype = debug_make_volatile_type (minfo->dhandle, *ptype); - } - - return true; -} - -/* Remember a type string in a demangled string. */ - -static boolean -stab_demangle_remember_type (minfo, p, len) - struct stab_demangle_info *minfo; - const char *p; - int len; -{ - if (minfo->typestring_count >= minfo->typestring_alloc) - { - minfo->typestring_alloc += 10; - minfo->typestrings = ((struct stab_demangle_typestring *) - xrealloc (minfo->typestrings, - (minfo->typestring_alloc - * sizeof *minfo->typestrings))); - } - - minfo->typestrings[minfo->typestring_count].typestring = p; - minfo->typestrings[minfo->typestring_count].len = (unsigned int) len; - ++minfo->typestring_count; - - return true; -} |