diff options
| author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:35:26 +0000 |
|---|---|---|
| committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:35:26 +0000 |
| commit | c906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch) | |
| tree | a0015aa5cedc19ccbab307251353a41722a3ae13 /gdb/stabsread.c | |
| parent | cd946cff9ede3f30935803403f06f6ed30cad136 (diff) | |
| download | gdb-c906108c21474dfb4ed285bcc0ac6fe02cd400cc.zip gdb-c906108c21474dfb4ed285bcc0ac6fe02cd400cc.tar.gz gdb-c906108c21474dfb4ed285bcc0ac6fe02cd400cc.tar.bz2 | |
Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'gdb/stabsread.c')
| -rw-r--r-- | gdb/stabsread.c | 5207 |
1 files changed, 5207 insertions, 0 deletions
diff --git a/gdb/stabsread.c b/gdb/stabsread.c new file mode 100644 index 0000000..c5d31e1 --- /dev/null +++ b/gdb/stabsread.c @@ -0,0 +1,5207 @@ +/* Support routines for decoding "stabs" debugging information format. + Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 + Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Support routines for reading and decoding debugging information in + the "stabs" format. This format is used with many systems that use + the a.out object file format, as well as some systems that use + COFF or ELF where the stabs data is placed in a special section. + Avoid placing any object file format specific code in this file. */ + +#include "defs.h" +#include "gdb_string.h" +#include "bfd.h" +#include "obstack.h" +#include "symtab.h" +#include "gdbtypes.h" +#include "expression.h" +#include "symfile.h" +#include "objfiles.h" +#include "aout/stab_gnu.h" /* We always use GNU stabs, not native */ +#include "libaout.h" +#include "aout/aout64.h" +#include "gdb-stabs.h" +#include "buildsym.h" +#include "complaints.h" +#include "demangle.h" +#include "language.h" + +#include <ctype.h> + +/* Ask stabsread.h to define the vars it normally declares `extern'. */ +#define EXTERN /**/ +#include "stabsread.h" /* Our own declarations */ +#undef EXTERN + +/* The routines that read and process a complete stabs for a C struct or + C++ class pass lists of data member fields and lists of member function + fields in an instance of a field_info structure, as defined below. + This is part of some reorganization of low level C++ support and is + expected to eventually go away... (FIXME) */ + +struct field_info +{ + struct nextfield + { + struct nextfield *next; + + /* This is the raw visibility from the stab. It is not checked + for being one of the visibilities we recognize, so code which + examines this field better be able to deal. */ + int visibility; + + struct field field; + } *list; + struct next_fnfieldlist + { + struct next_fnfieldlist *next; + struct fn_fieldlist fn_fieldlist; + } *fnlist; +}; + +static void +read_one_struct_field PARAMS ((struct field_info *, char **, char *, + struct type *, struct objfile *)); + +static char * +get_substring PARAMS ((char **, int)); + +static struct type * +dbx_alloc_type PARAMS ((int [2], struct objfile *)); + +static long read_huge_number PARAMS ((char **, int, int *)); + +static struct type *error_type PARAMS ((char **, struct objfile *)); + +static void +patch_block_stabs PARAMS ((struct pending *, struct pending_stabs *, + struct objfile *)); + +static void +fix_common_block PARAMS ((struct symbol *, int)); + +static int +read_type_number PARAMS ((char **, int *)); + +static struct type * +read_range_type PARAMS ((char **, int [2], struct objfile *)); + +static struct type * +read_sun_builtin_type PARAMS ((char **, int [2], struct objfile *)); + +static struct type * +read_sun_floating_type PARAMS ((char **, int [2], struct objfile *)); + +static struct type * +read_enum_type PARAMS ((char **, struct type *, struct objfile *)); + +static struct type * +rs6000_builtin_type PARAMS ((int)); + +static int +read_member_functions PARAMS ((struct field_info *, char **, struct type *, + struct objfile *)); + +static int +read_struct_fields PARAMS ((struct field_info *, char **, struct type *, + struct objfile *)); + +static int +read_baseclasses PARAMS ((struct field_info *, char **, struct type *, + struct objfile *)); + +static int +read_tilde_fields PARAMS ((struct field_info *, char **, struct type *, + struct objfile *)); + +static int +attach_fn_fields_to_type PARAMS ((struct field_info *, struct type *)); + +static int +attach_fields_to_type PARAMS ((struct field_info *, struct type *, + struct objfile *)); + +static struct type * +read_struct_type PARAMS ((char **, struct type *, struct objfile *)); + +static struct type * +read_array_type PARAMS ((char **, struct type *, struct objfile *)); + +static struct type ** +read_args PARAMS ((char **, int, struct objfile *)); + +static int +read_cpp_abbrev PARAMS ((struct field_info *, char **, struct type *, + struct objfile *)); + +/* new functions added for cfront support */ + +static int +copy_cfront_struct_fields PARAMS ((struct field_info *, struct type *, + struct objfile *)); + +static char * +get_cfront_method_physname PARAMS ((char *)); + +static int +read_cfront_baseclasses PARAMS ((struct field_info *, char **, + struct type *, struct objfile *)); + +static int +read_cfront_static_fields PARAMS ((struct field_info *, char**, + struct type *, struct objfile *)); +static int +read_cfront_member_functions PARAMS ((struct field_info *, char **, + struct type *, struct objfile *)); + +/* end new functions added for cfront support */ + +static void +add_live_range PARAMS ((struct objfile *, struct symbol *, + CORE_ADDR, CORE_ADDR)); + +static int +resolve_live_range PARAMS ((struct objfile *, struct symbol *, char *)); + +static int +process_reference PARAMS ((char **string)); + +static CORE_ADDR +ref_search_value PARAMS ((int refnum)); + +static int +resolve_symbol_reference PARAMS ((struct objfile *, struct symbol *, char *)); + +static const char vptr_name[] = { '_','v','p','t','r',CPLUS_MARKER,'\0' }; +static const char vb_name[] = { '_','v','b',CPLUS_MARKER,'\0' }; + +/* Define this as 1 if a pcc declaration of a char or short argument + gives the correct address. Otherwise assume pcc gives the + address of the corresponding int, which is not the same on a + big-endian machine. */ + +#ifndef BELIEVE_PCC_PROMOTION +#define BELIEVE_PCC_PROMOTION 0 +#endif + +static struct complaint invalid_cpp_abbrev_complaint = + {"invalid C++ abbreviation `%s'", 0, 0}; + +static struct complaint invalid_cpp_type_complaint = + {"C++ abbreviated type name unknown at symtab pos %d", 0, 0}; + +static struct complaint member_fn_complaint = + {"member function type missing, got '%c'", 0, 0}; + +static struct complaint const_vol_complaint = + {"const/volatile indicator missing, got '%c'", 0, 0}; + +static struct complaint error_type_complaint = + {"debug info mismatch between compiler and debugger", 0, 0}; + +static struct complaint invalid_member_complaint = + {"invalid (minimal) member type data format at symtab pos %d.", 0, 0}; + +static struct complaint range_type_base_complaint = + {"base type %d of range type is not defined", 0, 0}; + +static struct complaint reg_value_complaint = + {"register number %d too large (max %d) in symbol %s", 0, 0}; + +static struct complaint vtbl_notfound_complaint = + {"virtual function table pointer not found when defining class `%s'", 0, 0}; + +static struct complaint unrecognized_cplus_name_complaint = + {"Unknown C++ symbol name `%s'", 0, 0}; + +static struct complaint rs6000_builtin_complaint = + {"Unknown builtin type %d", 0, 0}; + +static struct complaint unresolved_sym_chain_complaint = + {"%s: common block `%s' from global_sym_chain unresolved", 0, 0}; + +static struct complaint stabs_general_complaint = + {"%s", 0, 0}; + +static struct complaint lrs_general_complaint = + {"%s", 0, 0}; + +/* Make a list of forward references which haven't been defined. */ + +static struct type **undef_types; +static int undef_types_allocated; +static int undef_types_length; +static struct symbol *current_symbol = NULL; + +/* Check for and handle cretinous stabs symbol name continuation! */ +#define STABS_CONTINUE(pp,objfile) \ + do { \ + if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ + *(pp) = next_symbol_text (objfile); \ + } while (0) + +/* FIXME: These probably should be our own types (like rs6000_builtin_type + has its own types) rather than builtin_type_*. */ +static struct type **os9k_type_vector[] = { + 0, + &builtin_type_int, + &builtin_type_char, + &builtin_type_long, + &builtin_type_short, + &builtin_type_unsigned_char, + &builtin_type_unsigned_short, + &builtin_type_unsigned_long, + &builtin_type_unsigned_int, + &builtin_type_float, + &builtin_type_double, + &builtin_type_void, + &builtin_type_long_double +}; + +static void os9k_init_type_vector PARAMS ((struct type **)); + +static void +os9k_init_type_vector(tv) + struct type **tv; +{ + int i; + for (i=0; i<sizeof(os9k_type_vector)/sizeof(struct type **); i++) + tv[i] = (os9k_type_vector[i] == 0 ? 0 : *(os9k_type_vector[i])); +} + +/* Look up a dbx type-number pair. Return the address of the slot + where the type for that number-pair is stored. + The number-pair is in TYPENUMS. + + This can be used for finding the type associated with that pair + or for associating a new type with the pair. */ + +struct type ** +dbx_lookup_type (typenums) + int typenums[2]; +{ + register int filenum = typenums[0]; + register int index = typenums[1]; + unsigned old_len; + register int real_filenum; + register struct header_file *f; + int f_orig_length; + + if (filenum == -1) /* -1,-1 is for temporary types. */ + return 0; + + if (filenum < 0 || filenum >= n_this_object_header_files) + { + static struct complaint msg = {"\ +Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.", + 0, 0}; + complain (&msg, filenum, index, symnum); + goto error_return; + } + + if (filenum == 0) + { + if (index < 0) + { + /* Caller wants address of address of type. We think + that negative (rs6k builtin) types will never appear as + "lvalues", (nor should they), so we stuff the real type + pointer into a temp, and return its address. If referenced, + this will do the right thing. */ + static struct type *temp_type; + + temp_type = rs6000_builtin_type(index); + return &temp_type; + } + + /* Type is defined outside of header files. + Find it in this object file's type vector. */ + if (index >= type_vector_length) + { + old_len = type_vector_length; + if (old_len == 0) + { + type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; + type_vector = (struct type **) + xmalloc (type_vector_length * sizeof (struct type *)); + } + while (index >= type_vector_length) + { + type_vector_length *= 2; + } + type_vector = (struct type **) + xrealloc ((char *) type_vector, + (type_vector_length * sizeof (struct type *))); + memset (&type_vector[old_len], 0, + (type_vector_length - old_len) * sizeof (struct type *)); + + if (os9k_stabs) + /* Deal with OS9000 fundamental types. */ + os9k_init_type_vector (type_vector); + } + return (&type_vector[index]); + } + else + { + real_filenum = this_object_header_files[filenum]; + + if (real_filenum >= N_HEADER_FILES (current_objfile)) + { + struct type *temp_type; + struct type **temp_type_p; + + warning ("GDB internal error: bad real_filenum"); + + error_return: + temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL); + temp_type_p = (struct type **) xmalloc (sizeof (struct type *)); + *temp_type_p = temp_type; + return temp_type_p; + } + + f = HEADER_FILES (current_objfile) + real_filenum; + + f_orig_length = f->length; + if (index >= f_orig_length) + { + while (index >= f->length) + { + f->length *= 2; + } + f->vector = (struct type **) + xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); + memset (&f->vector[f_orig_length], 0, + (f->length - f_orig_length) * sizeof (struct type *)); + } + return (&f->vector[index]); + } +} + +/* Make sure there is a type allocated for type numbers TYPENUMS + and return the type object. + This can create an empty (zeroed) type object. + TYPENUMS may be (-1, -1) to return a new type object that is not + put into the type vector, and so may not be referred to by number. */ + +static struct type * +dbx_alloc_type (typenums, objfile) + int typenums[2]; + struct objfile *objfile; +{ + register struct type **type_addr; + + if (typenums[0] == -1) + { + return (alloc_type (objfile)); + } + + type_addr = dbx_lookup_type (typenums); + + /* If we are referring to a type not known at all yet, + allocate an empty type for it. + We will fill it in later if we find out how. */ + if (*type_addr == 0) + { + *type_addr = alloc_type (objfile); + } + + return (*type_addr); +} + +/* for all the stabs in a given stab vector, build appropriate types + and fix their symbols in given symbol vector. */ + +static void +patch_block_stabs (symbols, stabs, objfile) + struct pending *symbols; + struct pending_stabs *stabs; + struct objfile *objfile; +{ + int ii; + char *name; + char *pp; + struct symbol *sym; + + if (stabs) + { + + /* for all the stab entries, find their corresponding symbols and + patch their types! */ + + for (ii = 0; ii < stabs->count; ++ii) + { + name = stabs->stab[ii]; + pp = (char*) strchr (name, ':'); + while (pp[1] == ':') + { + pp += 2; + pp = (char *)strchr(pp, ':'); + } + sym = find_symbol_in_list (symbols, name, pp-name); + if (!sym) + { + /* FIXME-maybe: it would be nice if we noticed whether + the variable was defined *anywhere*, not just whether + it is defined in this compilation unit. But neither + xlc or GCC seem to need such a definition, and until + we do psymtabs (so that the minimal symbols from all + compilation units are available now), I'm not sure + how to get the information. */ + + /* On xcoff, if a global is defined and never referenced, + ld will remove it from the executable. There is then + a N_GSYM stab for it, but no regular (C_EXT) symbol. */ + sym = (struct symbol *) + obstack_alloc (&objfile->symbol_obstack, + sizeof (struct symbol)); + + memset (sym, 0, sizeof (struct symbol)); + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; + SYMBOL_NAME (sym) = + obsavestring (name, pp - name, &objfile->symbol_obstack); + pp += 2; + if (*(pp-1) == 'F' || *(pp-1) == 'f') + { + /* I don't think the linker does this with functions, + so as far as I know this is never executed. + But it doesn't hurt to check. */ + SYMBOL_TYPE (sym) = + lookup_function_type (read_type (&pp, objfile)); + } + else + { + SYMBOL_TYPE (sym) = read_type (&pp, objfile); + } + add_symbol_to_list (sym, &global_symbols); + } + else + { + pp += 2; + if (*(pp-1) == 'F' || *(pp-1) == 'f') + { + SYMBOL_TYPE (sym) = + lookup_function_type (read_type (&pp, objfile)); + } + else + { + SYMBOL_TYPE (sym) = read_type (&pp, objfile); + } + } + } + } +} + + +/* 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. + TYPENUMS will then be used as an argument to dbx_lookup_type. + + Returns 0 for success, -1 for error. */ + +static int +read_type_number (pp, typenums) + register char **pp; + register int *typenums; +{ + int nbits; + if (**pp == '(') + { + (*pp)++; + typenums[0] = read_huge_number (pp, ',', &nbits); + if (nbits != 0) return -1; + typenums[1] = read_huge_number (pp, ')', &nbits); + if (nbits != 0) return -1; + } + else + { + typenums[0] = 0; + typenums[1] = read_huge_number (pp, 0, &nbits); + if (nbits != 0) return -1; + } + return 0; +} + + +#if !defined (REG_STRUCT_HAS_ADDR) +#define REG_STRUCT_HAS_ADDR(gcc_p,type) 0 +#endif + +#define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ +#define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ +#define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ +#define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ + +#define CFRONT_VISIBILITY_PRIVATE '2' /* Stabs character for private field */ +#define CFRONT_VISIBILITY_PUBLIC '1' /* Stabs character for public field */ + +/* This code added to support parsing of ARM/Cfront stabs strings */ + +/* Get substring from string up to char c, advance string pointer past + suibstring. */ + +static char * +get_substring (p, c) + char ** p; + int c; +{ + char *str; + str = *p; + *p = strchr (*p, c); + if (*p) + { + **p = 0; + (*p)++; + } + else + str = 0; + return str; +} + +/* Physname gets strcat'd onto sname in order to recreate the mangled + name (see funtion gdb_mangle_name in gdbtypes.c). For cfront, make + the physname look like that of g++ - take out the initial mangling + eg: for sname="a" and fname="foo__1aFPFs_i" return "FPFs_i" */ + +static char * +get_cfront_method_physname (fname) + char *fname; +{ + int len = 0; + /* FIXME would like to make this generic for g++ too, but + that is already handled in read_member_funcctions */ + char * p = fname; + + /* search ahead to find the start of the mangled suffix */ + if (*p == '_' && *(p+1)=='_') /* compiler generated; probably a ctor/dtor */ + p += 2; + while (p && (unsigned) ((p+1) - fname) < strlen (fname) && *(p+1) != '_') + p = strchr (p, '_'); + if (!(p && *p == '_' && *(p+1) == '_')) + error ("Invalid mangled function name %s",fname); + p += 2; /* advance past '__' */ + + /* struct name length and name of type should come next; advance past it */ + while (isdigit (*p)) + { + len = len * 10 + (*p - '0'); + p++; + } + p += len; + + return p; +} + +/* Read base classes within cfront class definition. + eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;; + ^^^^^^^^^^^^^^^^^^ + + A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;; + ^ + */ + +static int +read_cfront_baseclasses (fip, pp, type, objfile) + struct field_info *fip; + struct objfile *objfile; + char ** pp; + struct type *type; +{ + static struct complaint msg_unknown = {"\ + Unsupported token in stabs string %s.\n", + 0, 0}; + static struct complaint msg_notfound = {"\ + Unable to find base type for %s.\n", + 0, 0}; + int bnum = 0; + char * p; + int i; + struct nextfield *new; + + if (**pp == ';') /* no base classes; return */ + { + ++(*pp); + return 1; + } + + /* first count base classes so we can allocate space before parsing */ + for (p = *pp; p && *p && *p != ';'; p++) + { + if (*p == ' ') + bnum++; + } + bnum++; /* add one more for last one */ + + /* now parse the base classes until we get to the start of the methods + (code extracted and munged from read_baseclasses) */ + ALLOCATE_CPLUS_STRUCT_TYPE (type); + TYPE_N_BASECLASSES(type) = bnum; + + /* allocate space */ + { + int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); + char *pointer; + + pointer = (char *) TYPE_ALLOC (type, num_bytes); + TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; + } + B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); + + for (i = 0; i < TYPE_N_BASECLASSES (type); i++) + { + new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); + make_cleanup (free, new); + memset (new, 0, sizeof (struct nextfield)); + new -> next = fip -> list; + fip -> list = new; + FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ + + STABS_CONTINUE (pp, objfile); + + /* virtual? eg: v2@Bvir */ + if (**pp=='v') + { + SET_TYPE_FIELD_VIRTUAL (type, i); + ++(*pp); + } + + /* access? eg: 2@Bvir */ + /* Note: protected inheritance not supported in cfront */ + switch (*(*pp)++) + { + case CFRONT_VISIBILITY_PRIVATE: + new -> visibility = VISIBILITY_PRIVATE; + break; + case CFRONT_VISIBILITY_PUBLIC: + new -> visibility = VISIBILITY_PUBLIC; + break; + default: + /* Bad visibility format. Complain and treat it as + public. */ + { + static struct complaint msg = { + "Unknown visibility `%c' for baseclass", 0, 0}; + complain (&msg, new -> visibility); + new -> visibility = VISIBILITY_PUBLIC; + } + } + + /* "@" comes next - eg: @Bvir */ + if (**pp!='@') + { + complain (&msg_unknown, *pp); + return 1; + } + ++(*pp); + + + /* Set the bit offset of the portion of the object corresponding + to this baseclass. Always zero in the absence of + multiple inheritance. */ + /* Unable to read bit position from stabs; + Assuming no multiple inheritance for now FIXME! */ + /* We may have read this in the structure definition; + now we should fixup the members to be the actual base classes */ + FIELD_BITPOS (new->field) = 0; + + /* Get the base class name and type */ + { + char * bname; /* base class name */ + struct symbol * bsym; /* base class */ + char * p1, * p2; + p1 = strchr (*pp,' '); + p2 = strchr (*pp,';'); + if (p1<p2) + bname = get_substring (pp,' '); + else + bname = get_substring (pp,';'); + if (!bname || !*bname) + { + complain (&msg_unknown, *pp); + return 1; + } + /* FIXME! attach base info to type */ + bsym = lookup_symbol (bname, 0, STRUCT_NAMESPACE, 0, 0); /*demangled_name*/ + if (bsym) + { + new -> field.type = SYMBOL_TYPE(bsym); + new -> field.name = type_name_no_tag (new -> field.type); + } + else + { + complain (&msg_notfound, *pp); + return 1; + } + } + + /* If more base classes to parse, loop again. + We ate the last ' ' or ';' in get_substring, + so on exit we will have skipped the trailing ';' */ + /* if invalid, return 0; add code to detect - FIXME! */ + } + return 1; +} + +/* read cfront member functions. + pp points to string starting with list of functions + eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;; + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;; + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +*/ + +static int +read_cfront_member_functions (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + /* This code extracted from read_member_functions + so as to do the similar thing for our funcs */ + + int nfn_fields = 0; + int length = 0; + /* Total number of member functions defined in this class. If the class + defines two `f' functions, and one `g' function, then this will have + the value 3. */ + int total_length = 0; + int i; + struct next_fnfield + { + struct next_fnfield *next; + struct fn_field fn_field; + } *sublist; + struct type *look_ahead_type; + struct next_fnfieldlist *new_fnlist; + struct next_fnfield *new_sublist; + char *main_fn_name; + char * fname; + struct symbol * ref_func = 0; + + /* Process each list until we find the end of the member functions. + eg: p = "__ct__1AFv foo__1AFv ;;;" */ + + STABS_CONTINUE (pp, objfile); /* handle \\ */ + + while (**pp != ';' && (fname = get_substring (pp, ' '), fname)) + { + int is_static = 0; + int sublist_count = 0; + char * pname; + if (fname[0] == '*') /* static member */ + { + is_static=1; + sublist_count++; + fname++; + } + ref_func = lookup_symbol (fname, 0, VAR_NAMESPACE, 0, 0); /* demangled name */ + if (!ref_func) + { + static struct complaint msg = {"\ + Unable to find function symbol for %s\n", + 0, 0}; + complain (&msg, fname); + continue; + } + sublist = NULL; + look_ahead_type = NULL; + length = 0; + + new_fnlist = (struct next_fnfieldlist *) + xmalloc (sizeof (struct next_fnfieldlist)); + make_cleanup (free, new_fnlist); + memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); + + /* The following is code to work around cfront generated stabs. + The stabs contains full mangled name for each field. + We try to demangle the name and extract the field name out of it. */ + { + char *dem, *dem_p, *dem_args; + int dem_len; + dem = cplus_demangle (fname, DMGL_ANSI | DMGL_PARAMS); + if (dem != NULL) + { + dem_p = strrchr (dem, ':'); + if (dem_p != 0 && *(dem_p-1) == ':') + dem_p++; + /* get rid of args */ + dem_args = strchr (dem_p, '('); + if (dem_args == NULL) + dem_len = strlen (dem_p); + else + dem_len = dem_args - dem_p; + main_fn_name = + obsavestring (dem_p, dem_len, &objfile -> type_obstack); + } + else + { + main_fn_name = + obsavestring (fname, strlen (fname), &objfile -> type_obstack); + } + } /* end of code for cfront work around */ + + new_fnlist -> fn_fieldlist.name = main_fn_name; + + /*-------------------------------------------------*/ + /* Set up the sublists + Sublists are stuff like args, static, visibility, etc. + so in ARM, we have to set that info some other way. + Multiple sublists happen if overloading + eg: foo::26=##1;:;2A.; + In g++, we'd loop here thru all the sublists... */ + + new_sublist = + (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); + make_cleanup (free, new_sublist); + memset (new_sublist, 0, sizeof (struct next_fnfield)); + + /* eat 1; from :;2A.; */ + new_sublist -> fn_field.type = SYMBOL_TYPE(ref_func); /* normally takes a read_type */ + /* Make this type look like a method stub for gdb */ + TYPE_FLAGS (new_sublist -> fn_field.type) |= TYPE_FLAG_STUB; + TYPE_CODE (new_sublist -> fn_field.type) = TYPE_CODE_METHOD; + + /* If this is just a stub, then we don't have the real name here. */ + if (TYPE_FLAGS (new_sublist -> fn_field.type) & TYPE_FLAG_STUB) + { + if (!TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type)) + TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type) = type; + new_sublist -> fn_field.is_stub = 1; + } + + /* physname used later in mangling; eg PFs_i,5 for foo__1aFPFs_i + physname gets strcat'd in order to recreate the onto mangled name */ + pname = get_cfront_method_physname (fname); + new_sublist -> fn_field.physname = savestring (pname, strlen (pname)); + + + /* Set this member function's visibility fields. + Unable to distinguish access from stabs definition! + Assuming public for now. FIXME! + (for private, set new_sublist->fn_field.is_private = 1, + for public, set new_sublist->fn_field.is_protected = 1) */ + + /* Unable to distinguish const/volatile from stabs definition! + Assuming normal for now. FIXME! */ + + new_sublist -> fn_field.is_const = 0; + new_sublist -> fn_field.is_volatile = 0; /* volatile not implemented in cfront */ + + /* Set virtual/static function info + How to get vtable offsets ? + Assuming normal for now FIXME!! + For vtables, figure out from whence this virtual function came. + It may belong to virtual function table of + one of its baseclasses. + set: + new_sublist -> fn_field.voffset = vtable offset, + new_sublist -> fn_field.fcontext = look_ahead_type; + where look_ahead_type is type of baseclass */ + if (is_static) + new_sublist -> fn_field.voffset = VOFFSET_STATIC; + else /* normal member function. */ + new_sublist -> fn_field.voffset = 0; + new_sublist -> fn_field.fcontext = 0; + + + /* Prepare new sublist */ + new_sublist -> next = sublist; + sublist = new_sublist; + length++; + + /* In g++, we loop thu sublists - now we set from functions. */ + new_fnlist -> fn_fieldlist.fn_fields = (struct fn_field *) + obstack_alloc (&objfile -> type_obstack, + sizeof (struct fn_field) * length); + memset (new_fnlist -> fn_fieldlist.fn_fields, 0, + sizeof (struct fn_field) * length); + for (i = length; (i--, sublist); sublist = sublist -> next) + { + new_fnlist -> fn_fieldlist.fn_fields[i] = sublist -> fn_field; + } + + new_fnlist -> fn_fieldlist.length = length; + new_fnlist -> next = fip -> fnlist; + fip -> fnlist = new_fnlist; + nfn_fields++; + total_length += length; + STABS_CONTINUE (pp, objfile); /* handle \\ */ + } /* end of loop */ + + if (nfn_fields) + { + /* type should already have space */ + TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) + TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); + memset (TYPE_FN_FIELDLISTS (type), 0, + sizeof (struct fn_fieldlist) * nfn_fields); + TYPE_NFN_FIELDS (type) = nfn_fields; + TYPE_NFN_FIELDS_TOTAL (type) = total_length; + } + + /* end of scope for reading member func */ + + /* eg: ";;" */ + + /* Skip trailing ';' and bump count of number of fields seen */ + if (**pp == ';') + (*pp)++; + else + return 0; + return 1; +} + +/* This routine fixes up partial cfront types that were created + while parsing the stabs. The main need for this function is + to add information such as methods to classes. + Examples of "p": "sA;;__ct__1AFv foo__1AFv ;;;" */ +int +resolve_cfront_continuation (objfile, sym, p) + struct objfile * objfile; + struct symbol * sym; + char * p; +{ + struct symbol * ref_sym=0; + char * sname; + /* snarfed from read_struct_type */ + struct field_info fi; + struct type *type; + struct cleanup *back_to; + + /* Need to make sure that fi isn't gunna conflict with struct + in case struct already had some fnfs */ + fi.list = NULL; + fi.fnlist = NULL; + back_to = make_cleanup (null_cleanup, 0); + + /* We only accept structs, classes and unions at the moment. + Other continuation types include t (typedef), r (long dbl), ... + We may want to add support for them as well; + right now they are handled by duplicating the symbol information + into the type information (see define_symbol) */ + if (*p != 's' /* structs */ + && *p != 'c' /* class */ + && *p != 'u') /* union */ + return 0; /* only handle C++ types */ + p++; + + /* Get symbol typs name and validate + eg: p = "A;;__ct__1AFv foo__1AFv ;;;" */ + sname = get_substring (&p, ';'); + if (!sname || strcmp (sname, SYMBOL_NAME(sym))) + error ("Internal error: base symbol type name does not match\n"); + + /* Find symbol's internal gdb reference using demangled_name. + This is the real sym that we want; + sym was a temp hack to make debugger happy */ + ref_sym = lookup_symbol (SYMBOL_NAME(sym), 0, STRUCT_NAMESPACE, 0, 0); + type = SYMBOL_TYPE(ref_sym); + + + /* Now read the baseclasses, if any, read the regular C struct or C++ + class member fields, attach the fields to the type, read the C++ + member functions, attach them to the type, and then read any tilde + field (baseclass specifier for the class holding the main vtable). */ + + if (!read_cfront_baseclasses (&fi, &p, type, objfile) + /* g++ does this next, but cfront already did this: + || !read_struct_fields (&fi, &p, type, objfile) */ + || !copy_cfront_struct_fields (&fi, type, objfile) + || !read_cfront_member_functions (&fi, &p, type, objfile) + || !read_cfront_static_fields (&fi, &p, type, objfile) + || !attach_fields_to_type (&fi, type, objfile) + || !attach_fn_fields_to_type (&fi, type) + /* g++ does this next, but cfront doesn't seem to have this: + || !read_tilde_fields (&fi, &p, type, objfile) */ + ) + { + type = error_type (&p, objfile); + } + + do_cleanups (back_to); + return 0; +} +/* End of code added to support parsing of ARM/Cfront stabs strings */ + + +/* This routine fixes up symbol references/aliases to point to the original + symbol definition. Returns 0 on failure, non-zero on success. */ + +static int +resolve_symbol_reference (objfile, sym, p) + struct objfile *objfile; + struct symbol *sym; + char *p; +{ + int refnum; + struct symbol *ref_sym=0; + struct alias_list *alias; + + /* If this is not a symbol reference return now. */ + if (*p != '#') + return 0; + + /* Use "#<num>" as the name; we'll fix the name later. + We stored the original symbol name as "#<id>=<name>" + so we can now search for "#<id>" to resolving the reference. + We'll fix the names later by removing the "#<id>" or "#<id>=" */ + + /*---------------------------------------------------------*/ + /* Get the reference id number, and + advance p past the names so we can parse the rest. + eg: id=2 for p : "2=", "2=z:r(0,1)" "2:r(0,1);l(#5,#6),l(#7,#4)" */ + /*---------------------------------------------------------*/ + + /* This gets reference name from string. sym may not have a name. */ + + /* Get the reference number associated with the reference id in the + gdb stab string. From that reference number, get the main/primary + symbol for this alias. */ + refnum = process_reference (&p); + ref_sym = ref_search (refnum); + if (!ref_sym) + { + complain (&lrs_general_complaint, "symbol for reference not found"); + return 0; + } + + /* Parse the stab of the referencing symbol + now that we have the referenced symbol. + Add it as a new symbol and a link back to the referenced symbol. + eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */ + + + /* If the stab symbol table and string contain: + RSYM 0 5 00000000 868 #15=z:r(0,1) + LBRAC 0 0 00000000 899 #5= + SLINE 0 16 00000003 923 #6= + Then the same symbols can be later referenced by: + RSYM 0 5 00000000 927 #15:r(0,1);l(#5,#6) + This is used in live range splitting to: + 1) specify that a symbol (#15) is actually just a new storage + class for a symbol (#15=z) which was previously defined. + 2) specify that the beginning and ending ranges for a symbol + (#15) are the values of the beginning (#5) and ending (#6) + symbols. */ + + /* Read number as reference id. + eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */ + /* FIXME! Might I want to use SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; + in case of "l(0,0)"? */ + + /*--------------------------------------------------*/ + /* Add this symbol to the reference list. */ + /*--------------------------------------------------*/ + + alias = (struct alias_list *) obstack_alloc (&objfile->type_obstack, + sizeof (struct alias_list)); + if (!alias) + { + complain (&lrs_general_complaint, "Unable to allocate alias list memory"); + return 0; + } + + alias->next = 0; + alias->sym = sym; + + if (!SYMBOL_ALIASES (ref_sym)) + { + SYMBOL_ALIASES (ref_sym) = alias; + } + else + { + struct alias_list *temp; + + /* Get to the end of the list. */ + for (temp = SYMBOL_ALIASES (ref_sym); + temp->next; + temp = temp->next) + ; + temp->next = alias; + } + + /* Want to fix up name so that other functions (eg. valops) + will correctly print the name. + Don't add_symbol_to_list so that lookup_symbol won't find it. + nope... needed for fixups. */ + SYMBOL_NAME (sym) = SYMBOL_NAME (ref_sym); + + /* Done! */ + return 1; +} + +/* Structure for storing pointers to reference definitions for fast lookup + during "process_later". */ + +struct ref_map +{ + char *stabs; + CORE_ADDR value; + struct symbol *sym; +}; + +#define MAX_CHUNK_REFS 100 +#define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) +#define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) + +static struct ref_map *ref_map; + +/* Ptr to free cell in chunk's linked list. */ +static int ref_count = 0; + +/* Number of chunks malloced. */ +static int ref_chunk = 0; + +/* Create array of pointers mapping refids to symbols and stab strings. + Add pointers to reference definition symbols and/or their values as we + find them, using their reference numbers as our index. + These will be used later when we resolve references. */ +void +ref_add (refnum, sym, stabs, value) + int refnum; + struct symbol *sym; + char *stabs; + CORE_ADDR value; +{ + if (ref_count == 0) + ref_chunk = 0; + if (refnum >= ref_count) + ref_count = refnum + 1; + if (ref_count > ref_chunk * MAX_CHUNK_REFS) + { + int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; + int new_chunks = new_slots / MAX_CHUNK_REFS + 1; + ref_map = (struct ref_map *) + xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); + memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE); + ref_chunk += new_chunks; + } + ref_map[refnum].stabs = stabs; + ref_map[refnum].sym = sym; + ref_map[refnum].value = value; +} + +/* Return defined sym for the reference REFNUM. */ +struct symbol * +ref_search (refnum) + int refnum; +{ + if (refnum < 0 || refnum > ref_count) + return 0; + return ref_map[refnum].sym; +} + +/* Return value for the reference REFNUM. */ + +static CORE_ADDR +ref_search_value (refnum) + int refnum; +{ + if (refnum < 0 || refnum > ref_count) + return 0; + return ref_map[refnum].value; +} + +/* Parse a reference id in STRING and return the resulting + reference number. Move STRING beyond the reference id. */ + +static int +process_reference (string) + char **string; +{ + char *p; + int refnum = 0; + + if (**string != '#') + return 0; + + /* Advance beyond the initial '#'. */ + p = *string + 1; + + /* Read number as reference id. */ + while (*p && isdigit (*p)) + { + refnum = refnum * 10 + *p - '0'; + p++; + } + *string = p; + return refnum; +} + +/* If STRING defines a reference, store away a pointer to the reference + definition for later use. Return the reference number. */ + +int +symbol_reference_defined (string) + char **string; +{ + char *p = *string; + int refnum = 0; + + refnum = process_reference (&p); + + /* Defining symbols end in '=' */ + if (*p == '=') + { + /* Symbol is being defined here. */ + *string = p + 1; + return refnum; + } + else + { + /* Must be a reference. Either the symbol has already been defined, + or this is a forward reference to it. */ + *string = p; + return -1; + } +} + +/* ARGSUSED */ +struct symbol * +define_symbol (valu, string, desc, type, objfile) + CORE_ADDR valu; + char *string; + int desc; + int type; + struct objfile *objfile; +{ + register struct symbol *sym; + char *p = (char *) strchr (string, ':'); + int deftype; + int synonym = 0; + register int i; + + /* We would like to eliminate nameless symbols, but keep their types. + E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer + to type 2, but, should not create a symbol to address that type. Since + the symbol will be nameless, there is no way any user can refer to it. */ + + int nameless; + + /* Ignore syms with empty names. */ + if (string[0] == 0) + return 0; + + /* Ignore old-style symbols from cc -go */ + if (p == 0) + return 0; + + while (p[1] == ':') + { + p += 2; + p = strchr (p, ':'); + } + + /* If a nameless stab entry, all we need is the type, not the symbol. + e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ + nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); + + current_symbol = sym = (struct symbol *) + obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); + memset (sym, 0, sizeof (struct symbol)); + + switch (type & N_TYPE) + { + case N_TEXT: + SYMBOL_SECTION(sym) = SECT_OFF_TEXT; + break; + case N_DATA: + SYMBOL_SECTION(sym) = SECT_OFF_DATA; + break; + case N_BSS: + SYMBOL_SECTION(sym) = SECT_OFF_BSS; + break; + } + + if (processing_gcc_compilation) + { + /* 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. */ + SYMBOL_LINE(sym) = desc; + } + else + { + SYMBOL_LINE(sym) = 0; /* unknown */ + } + + if (is_cplus_marker (string[0])) + { + /* Special GNU C++ names. */ + switch (string[1]) + { + case 't': + SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"), + &objfile -> symbol_obstack); + break; + + case 'v': /* $vtbl_ptr_type */ + /* Was: SYMBOL_NAME (sym) = "vptr"; */ + goto normal; + + case 'e': + SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"), + &objfile -> symbol_obstack); + break; + + case '_': + /* This was an anonymous type that was never fixed up. */ + goto normal; + +#ifdef STATIC_TRANSFORM_NAME + case 'X': + /* SunPRO (3.0 at least) static variable encoding. */ + goto normal; +#endif + + default: + complain (&unrecognized_cplus_name_complaint, string); + goto normal; /* Do *something* with it */ + } + } + else if (string[0] == '#') + { + /* Special GNU C extension for referencing symbols. */ + char *s; + int refnum, nlen; + + /* If STRING defines a new reference id, then add it to the + reference map. Else it must be referring to a previously + defined symbol, so add it to the alias list of the previously + defined symbol. */ + s = string; + refnum = symbol_reference_defined (&s); + if (refnum >= 0) + ref_add (refnum, sym, string, SYMBOL_VALUE (sym)); + else + if (!resolve_symbol_reference (objfile, sym, string)) + return NULL; + + /* S..P contains the name of the symbol. We need to store + the correct name into SYMBOL_NAME. */ + nlen = p - s; + if (refnum >= 0) + { + if (nlen > 0) + { + SYMBOL_NAME (sym) = (char *) + obstack_alloc (&objfile -> symbol_obstack, nlen); + strncpy (SYMBOL_NAME (sym), s, nlen); + SYMBOL_NAME (sym)[nlen] = '\0'; + SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack); + } + else + /* FIXME! Want SYMBOL_NAME (sym) = 0; + Get error if leave name 0. So give it something. */ + { + nlen = p - string; + SYMBOL_NAME (sym) = (char *) + obstack_alloc (&objfile -> symbol_obstack, nlen); + strncpy (SYMBOL_NAME (sym), string, nlen); + SYMBOL_NAME (sym)[nlen] = '\0'; + SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack); + } + } + /* Advance STRING beyond the reference id. */ + string = s; + } + else + { + normal: + SYMBOL_LANGUAGE (sym) = current_subfile -> language; + SYMBOL_NAME (sym) = (char *) + obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1)); + /* Open-coded memcpy--saves function call time. */ + /* FIXME: Does it really? Try replacing with simple strcpy and + try it on an executable with a large symbol table. */ + /* FIXME: considering that gcc can open code memcpy anyway, I + doubt it. xoxorich. */ + { + register char *p1 = string; + register char *p2 = SYMBOL_NAME (sym); + while (p1 != p) + { + *p2++ = *p1++; + } + *p2++ = '\0'; + } + + /* If this symbol is from a C++ compilation, then attempt to cache the + demangled form for future reference. This is a typical time versus + space tradeoff, that was decided in favor of time because it sped up + C++ symbol lookups by a factor of about 20. */ + + SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack); + } + p++; + + /* Determine the type of name being defined. */ +#if 0 + /* Getting GDB to correctly skip the symbol on an undefined symbol + descriptor and not ever dump core is a very dodgy proposition if + we do things this way. I say the acorn RISC machine can just + fix their compiler. */ + /* The Acorn RISC machine's compiler can put out locals that don't + start with "234=" or "(3,4)=", so assume anything other than the + deftypes we know how to handle is a local. */ + if (!strchr ("cfFGpPrStTvVXCR", *p)) +#else + if (isdigit (*p) || *p == '(' || *p == '-') +#endif + deftype = 'l'; + else + deftype = *p++; + + switch (deftype) + { + 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 != '=') + { + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_TYPE (sym) = error_type (&p, objfile); + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &file_symbols); + return sym; + } + ++p; + switch (*p++) + { + case 'r': + { + double d = atof (p); + char *dbl_valu; + + /* FIXME-if-picky-about-floating-accuracy: Should be using + target arithmetic to get the value. real.c in GCC + probably has the necessary code. */ + + /* FIXME: lookup_fundamental_type is a hack. We should be + creating a type especially for the type of float constants. + Problem is, what type should it be? + + Also, what should the name of this type be? Should we + be using 'S' constants (see stabs.texinfo) instead? */ + + SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, + FT_DBL_PREC_FLOAT); + dbl_valu = (char *) + obstack_alloc (&objfile -> symbol_obstack, + TYPE_LENGTH (SYMBOL_TYPE (sym))); + store_floating (dbl_valu, TYPE_LENGTH (SYMBOL_TYPE (sym)), d); + SYMBOL_VALUE_BYTES (sym) = dbl_valu; + SYMBOL_CLASS (sym) = LOC_CONST_BYTES; + } + break; + case 'i': + { + /* 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. */ + + /* We just need one int constant type for all objfiles. + It doesn't depend on languages or anything (arguably its + name should be a language-specific name for a type of + that size, but I'm inclined to say that if the compiler + wants a nice name for the type, it can use 'e'). */ + static struct type *int_const_type; + + /* Yes, this is as long as a *host* int. That is because we + use atoi. */ + if (int_const_type == NULL) + int_const_type = + init_type (TYPE_CODE_INT, + sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0, + "integer constant", + (struct objfile *)NULL); + SYMBOL_TYPE (sym) = int_const_type; + SYMBOL_VALUE (sym) = atoi (p); + SYMBOL_CLASS (sym) = LOC_CONST; + } + 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,;"). */ + { + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_TYPE (sym) = read_type (&p, objfile); + + if (*p != ',') + { + SYMBOL_TYPE (sym) = error_type (&p, objfile); + break; + } + ++p; + + /* If the value is too big to fit in an int (perhaps because + it is unsigned), or something like that, we silently get + a bogus value. The type and everything else about it is + correct. Ideally, we should be using whatever we have + available for parsing unsigned and long long values, + however. */ + SYMBOL_VALUE (sym) = atoi (p); + } + break; + default: + { + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_TYPE (sym) = error_type (&p, objfile); + } + } + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &file_symbols); + return sym; + + case 'C': + /* The name of a caught exception. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_LABEL; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + SYMBOL_VALUE_ADDRESS (sym) = valu; + add_symbol_to_list (sym, &local_symbols); + break; + + case 'f': + /* A static function definition. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_BLOCK; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &file_symbols); + /* fall into process_function_types. */ + + process_function_types: + /* Function result types are described as the result type in stabs. + We need to convert this to the function-returning-type-X type + in GDB. E.g. "int" is converted to "function returning int". */ + if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) + SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); + + /* All functions in C++ have prototypes. */ + if (SYMBOL_LANGUAGE (sym) == language_cplus) + TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED; + + /* fall into process_prototype_types */ + + process_prototype_types: + /* Sun acc puts declared types of arguments here. */ + if (*p == ';') + { + struct type *ftype = SYMBOL_TYPE (sym); + int nsemi = 0; + int nparams = 0; + char *p1 = p; + + /* Obtain a worst case guess for the number of arguments + by counting the semicolons. */ + while (*p1) + { + if (*p1++ == ';') + nsemi++; + } + + /* Allocate parameter information fields and fill them in. */ + TYPE_FIELDS (ftype) = (struct field *) + TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); + while (*p++ == ';') + { + struct type *ptype; + + /* A type number of zero indicates the start of varargs. + FIXME: GDB currently ignores vararg functions. */ + if (p[0] == '0' && p[1] == '\0') + break; + ptype = read_type (&p, objfile); + + /* The Sun compilers mark integer arguments, which should + be promoted to the width of the calling conventions, with + a type which references itself. This type is turned into + a TYPE_CODE_VOID type by read_type, and we have to turn + it back into builtin_type_int here. + FIXME: Do we need a new builtin_type_promoted_int_arg ? */ + if (TYPE_CODE (ptype) == TYPE_CODE_VOID) + ptype = builtin_type_int; + TYPE_FIELD_TYPE (ftype, nparams++) = ptype; + } + TYPE_NFIELDS (ftype) = nparams; + TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; + } + break; + + case 'F': + /* A global function definition. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_BLOCK; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &global_symbols); + goto process_function_types; + + case 'G': + /* For a class G (global) symbol, it appears that the + value is not correct. It is necessary to search for the + corresponding linker definition to find the value. + These definitions appear at the end of the namelist. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_STATIC; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + /* Don't add symbol references to global_sym_chain. + Symbol references don't have valid names and wont't match up with + minimal symbols when the global_sym_chain is relocated. + We'll fixup symbol references when we fixup the defining symbol. */ + if (SYMBOL_NAME (sym) && SYMBOL_NAME (sym)[0] != '#') + { + i = hashname (SYMBOL_NAME (sym)); + SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; + global_sym_chain[i] = sym; + } + add_symbol_to_list (sym, &global_symbols); + 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 's': + case 'l': + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_LOCAL; + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + break; + + case 'p': + if (*p == 'F') + /* 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++; + SYMBOL_TYPE (sym) + = lookup_pointer_type + (lookup_function_type (read_type (&p, objfile))); + } + else + SYMBOL_TYPE (sym) = read_type (&p, objfile); + + /* Normally this is a parameter, a LOC_ARG. On the i960, it + can also be a LOC_LOCAL_ARG depending on symbol type. */ +#ifndef DBX_PARM_SYMBOL_CLASS +#define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG +#endif + + SYMBOL_CLASS (sym) = DBX_PARM_SYMBOL_CLASS (type); + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + + if (TARGET_BYTE_ORDER != BIG_ENDIAN) + { + /* On little-endian machines, this crud is never necessary, + and, if the extra bytes contain garbage, is harmful. */ + break; + } + + /* If it's gcc-compiled, if it says `short', believe it. */ + if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION) + break; + +#if !BELIEVE_PCC_PROMOTION + { + /* This is the signed type which arguments get promoted to. */ + static struct type *pcc_promotion_type; + /* This is the unsigned type which arguments get promoted to. */ + static struct type *pcc_unsigned_promotion_type; + + /* Call it "int" because this is mainly C lossage. */ + if (pcc_promotion_type == NULL) + pcc_promotion_type = + init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, + 0, "int", NULL); + + if (pcc_unsigned_promotion_type == NULL) + pcc_unsigned_promotion_type = + init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, "unsigned int", NULL); + +#if defined(BELIEVE_PCC_PROMOTION_TYPE) + /* This macro is defined on machines (e.g. sparc) where + we should believe the type of a PCC 'short' argument, + but shouldn't believe the address (the address is + the address of the corresponding int). + + My guess is that this correction, as opposed to changing + the parameter to an 'int' (as done below, for PCC + on most machines), is the right thing to do + on all machines, but I don't want to risk breaking + something that already works. On most PCC machines, + the sparc problem doesn't come up because the calling + function has to zero the top bytes (not knowing whether + the called function wants an int or a short), so there + is little practical difference between an int and a short + (except perhaps what happens when the GDB user types + "print short_arg = 0x10000;"). + + Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler + actually produces the correct address (we don't need to fix it + up). I made this code adapt so that it will offset the symbol + if it was pointing at an int-aligned location and not + otherwise. This way you can use the same gdb for 4.0.x and + 4.1 systems. + + If the parameter is shorter than an int, and is integral + (e.g. char, short, or unsigned equivalent), and is claimed to + be passed on an integer boundary, don't believe it! Offset the + parameter's address to the tail-end of that integer. */ + + if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) + && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT + && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type)) + { + SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type) + - TYPE_LENGTH (SYMBOL_TYPE (sym)); + } + break; + +#else /* no BELIEVE_PCC_PROMOTION_TYPE. */ + + /* If PCC says a parameter is a short or a char, + it is really an int. */ + if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) + && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) + { + SYMBOL_TYPE (sym) = + TYPE_UNSIGNED (SYMBOL_TYPE (sym)) + ? pcc_unsigned_promotion_type + : pcc_promotion_type; + } + break; + +#endif /* no BELIEVE_PCC_PROMOTION_TYPE. */ + } +#endif /* !BELIEVE_PCC_PROMOTION. */ + + case 'P': + /* acc seems to use P to declare the prototypes of functions that + are referenced by this file. gdb is not prepared to deal + with this extra information. FIXME, it ought to. */ + if (type == N_FUN) + { + SYMBOL_TYPE (sym) = read_type (&p, objfile); + goto process_prototype_types; + } + /*FALLTHROUGH*/ + + case 'R': + /* Parameter which is in a register. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_REGPARM; + SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); + if (SYMBOL_VALUE (sym) >= NUM_REGS) + { + complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS, + SYMBOL_SOURCE_NAME (sym)); + SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ + } + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + break; + + case 'r': + /* Register variable (either global or local). */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_REGISTER; + SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); + if (SYMBOL_VALUE (sym) >= NUM_REGS) + { + complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS, + SYMBOL_SOURCE_NAME (sym)); + SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ + } + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + if (within_function) + { + /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same + name to represent an argument passed in a register. + GCC uses 'P' for the same case. So if we find such a symbol pair + we combine it into one 'P' symbol. For Sun cc we need to do this + regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out + the 'p' symbol even if it never saves the argument onto the stack. + + On most machines, we want to preserve both symbols, so that + we can still get information about what is going on with the + stack (VAX for computing args_printed, using stack slots instead + of saved registers in backtraces, etc.). + + Note that this code illegally combines + main(argc) struct foo argc; { register struct foo argc; } + but this case is considered pathological and causes a warning + from a decent compiler. */ + + if (local_symbols + && local_symbols->nsyms > 0 +#ifndef USE_REGISTER_NOT_ARG + && REG_STRUCT_HAS_ADDR (processing_gcc_compilation, + SYMBOL_TYPE (sym)) + && (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_SET + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_BITSTRING) +#endif + ) + { + struct symbol *prev_sym; + prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; + if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG + || SYMBOL_CLASS (prev_sym) == LOC_ARG) + && STREQ (SYMBOL_NAME (prev_sym), SYMBOL_NAME(sym))) + { + SYMBOL_CLASS (prev_sym) = LOC_REGPARM; + /* Use the type from the LOC_REGISTER; that is the type + that is actually in that register. */ + SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); + SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); + sym = prev_sym; + break; + } + } + add_symbol_to_list (sym, &local_symbols); + } + else + add_symbol_to_list (sym, &file_symbols); + break; + + case 'S': + /* Static symbol at top level of file */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_STATIC; + SYMBOL_VALUE_ADDRESS (sym) = valu; +#ifdef STATIC_TRANSFORM_NAME + if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym))) + { + struct minimal_symbol *msym; + msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, objfile); + if (msym != NULL) + { + SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym)); + SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); + } + } +#endif + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &file_symbols); + break; + + case 't': + SYMBOL_TYPE (sym) = read_type (&p, objfile); + + /* For a nameless type, we don't want a create a symbol, thus we + did not use `sym'. Return without further processing. */ + if (nameless) return NULL; + + SYMBOL_CLASS (sym) = LOC_TYPEDEF; + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + /* C++ vagaries: we may have a type which is derived from + a base type which did not have its name defined when the + derived class was output. We fill in the derived class's + base part member's name here in that case. */ + if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) + if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) + && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) + { + int j; + for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) + if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) + TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = + type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); + } + + if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) + { + /* gcc-2.6 or later (when using -fvtable-thunks) + emits a unique named type for a vtable entry. + Some gdb code depends on that specific name. */ + extern const char vtbl_ptr_name[]; + + if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR + && strcmp (SYMBOL_NAME (sym), vtbl_ptr_name)) + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) + { + /* If we are giving a name to a type such as "pointer to + foo" or "function returning foo", we better not set + the TYPE_NAME. If the program contains "typedef char + *caddr_t;", we don't want all variables of type char + * to print as caddr_t. This is not just a + consequence of GDB's type management; PCC and GCC (at + least through version 2.4) both output variables of + either type char * or caddr_t with the type number + defined in the 't' symbol for caddr_t. If a future + compiler cleans this up it GDB is not ready for it + yet, but if it becomes ready we somehow need to + disable this check (without breaking the PCC/GCC2.4 + case). + + Sigh. + + Fortunately, this check seems not to be necessary + for anything except pointers or functions. */ + } + else + TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym); + } + + add_symbol_to_list (sym, &file_symbols); + 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. */ + synonym = *p == 't'; + + if (synonym) + p++; + /* The semantics of C++ state that "struct foo { ... }" also defines + a typedef for "foo". Unfortunately, cfront never makes the typedef + when translating C++ into C. We make the typedef here so that + "ptype foo" works as expected for cfront translated code. */ + else if (current_subfile->language == language_cplus) + synonym = 1; + + SYMBOL_TYPE (sym) = read_type (&p, objfile); + + /* For a nameless type, we don't want a create a symbol, thus we + did not use `sym'. Return without further processing. */ + if (nameless) return NULL; + + SYMBOL_CLASS (sym) = LOC_TYPEDEF; + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; + if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) + TYPE_TAG_NAME (SYMBOL_TYPE (sym)) + = obconcat (&objfile -> type_obstack, "", "", SYMBOL_NAME (sym)); + add_symbol_to_list (sym, &file_symbols); + + if (synonym) + { + /* Clone the sym and then modify it. */ + register struct symbol *typedef_sym = (struct symbol *) + obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); + *typedef_sym = *sym; + SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; + SYMBOL_VALUE (typedef_sym) = valu; + SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE; + if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) + TYPE_NAME (SYMBOL_TYPE (sym)) + = obconcat (&objfile -> type_obstack, "", "", SYMBOL_NAME (sym)); + add_symbol_to_list (typedef_sym, &file_symbols); + } + break; + + case 'V': + /* Static symbol of local scope */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_STATIC; + SYMBOL_VALUE_ADDRESS (sym) = valu; +#ifdef STATIC_TRANSFORM_NAME + if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym))) + { + struct minimal_symbol *msym; + msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, objfile); + if (msym != NULL) + { + SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym)); + SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); + } + } +#endif + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + if (os9k_stabs) + add_symbol_to_list (sym, &global_symbols); + else + add_symbol_to_list (sym, &local_symbols); + break; + + case 'v': + /* Reference parameter */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_REF_ARG; + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + break; + + case 'a': + /* Reference parameter which is in a register. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; + SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); + if (SYMBOL_VALUE (sym) >= NUM_REGS) + { + complain (®_value_complaint, SYMBOL_VALUE (sym), NUM_REGS, + SYMBOL_SOURCE_NAME (sym)); + SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ + } + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + 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. */ + SYMBOL_TYPE (sym) = read_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_LOCAL; + SYMBOL_VALUE (sym) = valu; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &local_symbols); + break; + + /* New code added to support cfront stabs strings. + Note: case 'P' already handled above */ + case 'Z': + /* Cfront type continuation coming up! + Find the original definition and add to it. + We'll have to do this for the typedef too, + since we cloned the symbol to define a type in read_type. + Stabs info examples: + __1C :Ztl + foo__1CFv :ZtF (first def foo__1CFv:F(0,3);(0,24)) + C:ZsC;;__ct__1CFv func1__1CFv func2__1CFv ... ;;; + where C is the name of the class. + Unfortunately, we can't lookup the original symbol yet 'cuz + we haven't finished reading all the symbols. + Instead, we save it for processing later */ + process_later (sym, p, resolve_cfront_continuation); + SYMBOL_TYPE (sym) = error_type (&p, objfile); /* FIXME! change later */ + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_VALUE (sym) = 0; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + /* Don't add to list - we'll delete it later when + we add the continuation to the real sym */ + return sym; + /* End of new code added to support cfront stabs strings */ + + default: + SYMBOL_TYPE (sym) = error_type (&p, objfile); + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_VALUE (sym) = 0; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + add_symbol_to_list (sym, &file_symbols); + break; + } + + /* When passing structures to a function, some systems sometimes pass + the address in a register, not the structure itself. */ + + if (REG_STRUCT_HAS_ADDR (processing_gcc_compilation, SYMBOL_TYPE (sym)) + && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG)) + { + struct type *symbol_type = check_typedef (SYMBOL_TYPE (sym)); + + if ((TYPE_CODE (symbol_type) == TYPE_CODE_STRUCT) + || (TYPE_CODE (symbol_type) == TYPE_CODE_UNION) + || (TYPE_CODE (symbol_type) == TYPE_CODE_BITSTRING) + || (TYPE_CODE (symbol_type) == TYPE_CODE_SET)) + { + /* If REG_STRUCT_HAS_ADDR yields non-zero we have to convert + LOC_REGPARM to LOC_REGPARM_ADDR for structures and unions. */ + if (SYMBOL_CLASS (sym) == LOC_REGPARM) + SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; + /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th + and subsequent arguments on the sparc, for example). */ + else if (SYMBOL_CLASS (sym) == LOC_ARG) + SYMBOL_CLASS (sym) = LOC_REF_ARG; + } + } + + /* Is there more to parse? For example LRS/alias information? */ + while (*p && *p == ';') + { + p++; + if (*p && *p == 'l') + { + /* GNU extensions for live range splitting may be appended to + the end of the stab string. eg. "l(#1,#2);l(#3,#5)" */ + + /* Resolve the live range and add it to SYM's live range list. */ + if (!resolve_live_range (objfile, sym, p)) + return NULL; + + /* Find end of live range info. */ + p = strchr (p, ')'); + if (!*p || *p != ')') + { + complain (&lrs_general_complaint, "live range format not recognized"); + return NULL; + } + p++; + } + } + return sym; +} + +/* Add the live range found in P to the symbol SYM in objfile OBJFILE. Returns + non-zero on success, zero otherwise. */ + +static int +resolve_live_range (objfile, sym, p) + struct objfile *objfile; + struct symbol *sym; + char *p; +{ + int refnum; + CORE_ADDR start, end; + + /* Sanity check the beginning of the stabs string. */ + if (!*p || *p != 'l') + { + complain (&lrs_general_complaint, "live range string 1"); + return 0; + } + p++; + + if (!*p || *p != '(') + { + complain (&lrs_general_complaint, "live range string 2"); + return 0; + } + p++; + + /* Get starting value of range and advance P past the reference id. + + ?!? In theory, the process_reference should never fail, but we should + catch that case just in case the compiler scrogged the stabs. */ + refnum = process_reference (&p); + start = ref_search_value (refnum); + if (!start) + { + complain (&lrs_general_complaint, "Live range symbol not found 1"); + return 0; + } + + if (!*p || *p != ',') + { + complain (&lrs_general_complaint, "live range string 3"); + return 0; + } + p++; + + /* Get ending value of range and advance P past the reference id. + + ?!? In theory, the process_reference should never fail, but we should + catch that case just in case the compiler scrogged the stabs. */ + refnum = process_reference (&p); + end = ref_search_value (refnum); + if (!end) + { + complain (&lrs_general_complaint, "Live range symbol not found 2"); + return 0; + } + + if (!*p || *p != ')') + { + complain (&lrs_general_complaint, "live range string 4"); + return 0; + } + + /* Now that we know the bounds of the range, add it to the + symbol. */ + add_live_range (objfile, sym, start, end); + + return 1; +} + +/* Add a new live range defined by START and END to the symbol SYM + in objfile OBJFILE. */ + +static void +add_live_range (objfile, sym, start, end) + struct objfile *objfile; + struct symbol *sym; + CORE_ADDR start, end; +{ + struct range_list *r, *rs; + + if (start >= end) + { + complain (&lrs_general_complaint, "end of live range follows start"); + return; + } + + /* Alloc new live range structure. */ + r = (struct range_list *) + obstack_alloc (&objfile->type_obstack, + sizeof (struct range_list)); + r->start = start; + r->end = end; + r->next = 0; + + /* Append this range to the symbol's range list. */ + if (!SYMBOL_RANGES (sym)) + SYMBOL_RANGES (sym) = r; + else + { + /* Get the last range for the symbol. */ + for (rs = SYMBOL_RANGES (sym); rs->next; rs = rs->next) + ; + rs->next = r; + } +} + + +/* Skip rest of this symbol and return an error type. + + General notes on error recovery: error_type always skips to the + end of the symbol (modulo cretinous dbx symbol name continuation). + Thus code like this: + + if (*(*pp)++ != ';') + return error_type (pp, objfile); + + is wrong because if *pp starts out pointing at '\0' (typically as the + result of an earlier error), it will be incremented to point to the + start of the next symbol, which might produce strange results, at least + if you run off the end of the string table. Instead use + + if (**pp != ';') + return error_type (pp, objfile); + ++*pp; + + or + + if (**pp != ';') + foo = error_type (pp, objfile); + else + ++*pp; + + And in case it isn't obvious, the point of all this hair is so the compiler + can define new types and new syntaxes, and old versions of the + debugger will be able to read the new symbol tables. */ + +static struct type * +error_type (pp, objfile) + char **pp; + struct objfile *objfile; +{ + complain (&error_type_complaint); + while (1) + { + /* Skip to end of symbol. */ + while (**pp != '\0') + { + (*pp)++; + } + + /* Check for and handle cretinous dbx symbol name continuation! */ + if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') + { + *pp = next_symbol_text (objfile); + } + else + { + break; + } + } + return (builtin_type_error); +} + + +/* Read type information or a type definition; return the type. Even + though this routine accepts either type information or a type + definition, the distinction is relevant--some parts of stabsread.c + assume that type information starts with a digit, '-', or '(' in + deciding whether to call read_type. */ + +struct type * +read_type (pp, objfile) + register char **pp; + struct objfile *objfile; +{ + register struct type *type = 0; + struct type *type1; + int typenums[2]; + char type_descriptor; + + /* Size in bits of type if specified by a type attribute, or -1 if + there is no size attribute. */ + int type_size = -1; + + /* Used to distinguish string and bitstring from char-array and set. */ + int is_string = 0; + + /* 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 ((**pp >= '0' && **pp <= '9') + || **pp == '(' + || **pp == '-') + { + if (read_type_number (pp, typenums) != 0) + return error_type (pp, objfile); + + /* Type is not being defined here. Either it already exists, + or this is a forward reference to it. dbx_alloc_type handles + both cases. */ + if (**pp != '=') + return dbx_alloc_type (typenums, objfile); + + /* Type is being defined here. */ + /* Skip the '='. + Also skip the type descriptor - we get it below with (*pp)[-1]. */ + (*pp)+=2; + } + else + { + /* '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; + (*pp)++; + } + + again: + type_descriptor = (*pp)[-1]; + switch (type_descriptor) + { + case 'x': + { + enum type_code code; + + /* Used to index through file_symbols. */ + struct pending *ppt; + int i; + + /* Name including "struct", etc. */ + char *type_name; + + { + char *from, *to, *p, *q1, *q2; + + /* Set the type code according to the following letter. */ + switch ((*pp)[0]) + { + case 's': + code = TYPE_CODE_STRUCT; + break; + case 'u': + code = TYPE_CODE_UNION; + break; + case 'e': + code = TYPE_CODE_ENUM; + break; + default: + { + /* Complain and keep going, so compilers can invent new + cross-reference types. */ + static struct complaint msg = + {"Unrecognized cross-reference type `%c'", 0, 0}; + complain (&msg, (*pp)[0]); + code = TYPE_CODE_STRUCT; + break; + } + } + + q1 = strchr (*pp, '<'); + p = strchr (*pp, ':'); + if (p == NULL) + return error_type (pp, objfile); + if (q1 && p > q1 && p[1] == ':') + { + int nesting_level = 0; + for (q2 = q1; *q2; q2++) + { + if (*q2 == '<') + nesting_level++; + else if (*q2 == '>') + nesting_level--; + else if (*q2 == ':' && nesting_level == 0) + break; + } + p = q2; + if (*p != ':') + return error_type (pp, objfile); + } + to = type_name = + (char *)obstack_alloc (&objfile->type_obstack, p - *pp + 1); + + /* Copy the name. */ + from = *pp + 1; + while (from < p) + *to++ = *from++; + *to = '\0'; + + /* Set the pointer ahead of the name which we just read, and + the colon. */ + *pp = from + 1; + } + + /* Now check to see whether the type has already been + declared. This was written for arrays of cross-referenced + types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty + sure it is not necessary anymore. But it might be a good + idea, to save a little memory. */ + + for (ppt = file_symbols; ppt; ppt = ppt->next) + for (i = 0; i < ppt->nsyms; i++) + { + struct symbol *sym = ppt->symbol[i]; + + if (SYMBOL_CLASS (sym) == LOC_TYPEDEF + && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE + && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) + && STREQ (SYMBOL_NAME (sym), type_name)) + { + obstack_free (&objfile -> type_obstack, type_name); + type = SYMBOL_TYPE (sym); + return type; + } + } + + /* Didn't find the type to which this refers, so we must + be dealing with a forward reference. Allocate a type + structure for it, and keep track of it so we can + fill in the rest of the fields when we get the full + type. */ + type = dbx_alloc_type (typenums, objfile); + TYPE_CODE (type) = code; + TYPE_TAG_NAME (type) = type_name; + INIT_CPLUS_SPECIFIC(type); + TYPE_FLAGS (type) |= TYPE_FLAG_STUB; + + add_undefined_type (type); + return type; + } + + case '-': /* RS/6000 built-in type */ + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '(': + (*pp)--; + + /* We deal with something like t(1,2)=(3,4)=... which + the Lucid compiler and recent gcc versions (post 2.7.3) use. */ + + /* Allocate and enter the typedef type first. + This handles recursive types. */ + type = dbx_alloc_type (typenums, objfile); + TYPE_CODE (type) = TYPE_CODE_TYPEDEF; + { struct type *xtype = read_type (pp, objfile); + if (type == xtype) + { + /* It's being defined as itself. That means it is "void". */ + TYPE_CODE (type) = TYPE_CODE_VOID; + TYPE_LENGTH (type) = 1; + } + else if (type_size >= 0 || is_string) + { + *type = *xtype; + TYPE_NAME (type) = NULL; + TYPE_TAG_NAME (type) = NULL; + } + else + { + TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB; + TYPE_TARGET_TYPE (type) = xtype; + } + } + break; + + /* In the following types, we must be sure to overwrite any existing + type that the typenums refer to, rather than allocating a new one + and making the typenums point to the new one. This is because there + may already be pointers to the existing type (if it had been + forward-referenced), and we must change it to a pointer, function, + reference, or whatever, *in-place*. */ + + case '*': + type1 = read_type (pp, objfile); + type = make_pointer_type (type1, dbx_lookup_type (typenums)); + break; + + case '&': /* Reference to another type */ + type1 = read_type (pp, objfile); + type = make_reference_type (type1, dbx_lookup_type (typenums)); + break; + + case 'f': /* Function returning another type */ + if (os9k_stabs && **pp == '(') + { + /* Function prototype; parse it. + We must conditionalize this on os9k_stabs because otherwise + it could be confused with a Sun-style (1,3) typenumber + (I think). */ + struct type *t; + ++*pp; + while (**pp != ')') + { + t = read_type (pp, objfile); + if (**pp == ',') ++*pp; + } + } + type1 = read_type (pp, objfile); + type = make_function_type (type1, dbx_lookup_type (typenums)); + break; + + case 'k': /* Const qualifier on some type (Sun) */ + case 'c': /* Const qualifier on some type (OS9000) */ + /* Because 'c' means other things to AIX and 'k' is perfectly good, + only accept 'c' in the os9k_stabs case. */ + if (type_descriptor == 'c' && !os9k_stabs) + return error_type (pp, objfile); + type = read_type (pp, objfile); + /* FIXME! For now, we ignore const and volatile qualifiers. */ + break; + + case 'B': /* Volatile qual on some type (Sun) */ + case 'i': /* Volatile qual on some type (OS9000) */ + /* Because 'i' means other things to AIX and 'B' is perfectly good, + only accept 'i' in the os9k_stabs case. */ + if (type_descriptor == 'i' && !os9k_stabs) + return error_type (pp, objfile); + type = read_type (pp, objfile); + /* FIXME! For now, we ignore const and volatile qualifiers. */ + break; + + case '@': + if (isdigit (**pp) || **pp == '(' || **pp == '-') + { /* Member (class & variable) type */ + /* FIXME -- we should be doing smash_to_XXX types here. */ + + struct type *domain = read_type (pp, objfile); + struct type *memtype; + + if (**pp != ',') + /* Invalid member type data format. */ + return error_type (pp, objfile); + ++*pp; + + memtype = read_type (pp, objfile); + type = dbx_alloc_type (typenums, objfile); + smash_to_member_type (type, domain, memtype); + } + else /* type attribute */ + { + char *attr = *pp; + /* Skip to the semicolon. */ + while (**pp != ';' && **pp != '\0') + ++(*pp); + if (**pp == '\0') + return error_type (pp, objfile); + else + ++*pp; /* Skip the semicolon. */ + + switch (*attr) + { + case 's': + type_size = atoi (attr + 1); + if (type_size <= 0) + type_size = -1; + break; + + case 'S': + is_string = 1; + break; + + default: + /* Ignore unrecognized type attributes, so future compilers + can invent new ones. */ + break; + } + ++*pp; + goto again; + } + break; + + case '#': /* Method (class & fn) type */ + if ((*pp)[0] == '#') + { + /* We'll get the parameter types from the name. */ + struct type *return_type; + + (*pp)++; + return_type = read_type (pp, objfile); + if (*(*pp)++ != ';') + complain (&invalid_member_complaint, symnum); + type = allocate_stub_method (return_type); + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + } + else + { + struct type *domain = read_type (pp, objfile); + struct type *return_type; + struct type **args; + + if (**pp != ',') + /* Invalid member type data format. */ + return error_type (pp, objfile); + else + ++(*pp); + + return_type = read_type (pp, objfile); + args = read_args (pp, ';', objfile); + type = dbx_alloc_type (typenums, objfile); + smash_to_method_type (type, domain, return_type, args); + } + break; + + case 'r': /* Range type */ + type = read_range_type (pp, typenums, objfile); + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + break; + + case 'b': + if (os9k_stabs) + /* Const and volatile qualified type. */ + type = read_type (pp, objfile); + else + { + /* Sun ACC builtin int type */ + type = read_sun_builtin_type (pp, typenums, objfile); + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + } + break; + + case 'R': /* Sun ACC builtin float type */ + type = read_sun_floating_type (pp, typenums, objfile); + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + break; + + case 'e': /* Enumeration type */ + type = dbx_alloc_type (typenums, objfile); + type = read_enum_type (pp, type, objfile); + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + break; + + case 's': /* Struct type */ + case 'u': /* Union type */ + type = dbx_alloc_type (typenums, objfile); + switch (type_descriptor) + { + case 's': + TYPE_CODE (type) = TYPE_CODE_STRUCT; + break; + case 'u': + TYPE_CODE (type) = TYPE_CODE_UNION; + break; + } + type = read_struct_type (pp, type, objfile); + break; + + case 'a': /* Array type */ + if (**pp != 'r') + return error_type (pp, objfile); + ++*pp; + + type = dbx_alloc_type (typenums, objfile); + type = read_array_type (pp, type, objfile); + if (is_string) + TYPE_CODE (type) = TYPE_CODE_STRING; + break; + + case 'S': + type1 = read_type (pp, objfile); + type = create_set_type ((struct type*) NULL, type1); + if (is_string) + TYPE_CODE (type) = TYPE_CODE_BITSTRING; + if (typenums[0] != -1) + *dbx_lookup_type (typenums) = type; + break; + + default: + --*pp; /* Go back to the symbol in error */ + /* Particularly important if it was \0! */ + return error_type (pp, objfile); + } + + if (type == 0) + { + warning ("GDB internal error, type is NULL in stabsread.c\n"); + return error_type (pp, objfile); + } + + /* Size specified in a type attribute overrides any other size. */ + if (type_size != -1) + TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; + + return type; +} + +/* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. + Return the proper type node for a given builtin type number. */ + +static struct type * +rs6000_builtin_type (typenum) + int typenum; +{ + /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ +#define NUMBER_RECOGNIZED 34 + /* This includes an empty slot for type number -0. */ + static struct type *negative_types[NUMBER_RECOGNIZED + 1]; + struct type *rettype = NULL; + + if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) + { + complain (&rs6000_builtin_complaint, typenum); + return builtin_type_error; + } + if (negative_types[-typenum] != NULL) + return negative_types[-typenum]; + +#if TARGET_CHAR_BIT != 8 + #error This code wrong for TARGET_CHAR_BIT not 8 + /* These definitions all assume that TARGET_CHAR_BIT is 8. I think + that if that ever becomes not true, the correct fix will be to + make the size in the struct type to be in bits, not in units of + TARGET_CHAR_BIT. */ +#endif + + switch (-typenum) + { + case 1: + /* The size of this and all the other types are fixed, defined + by the debugging format. If there is a type called "int" which + is other than 32 bits, then it should use a new negative type + number (or avoid negative type numbers for that case). + See stabs.texinfo. */ + rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); + break; + case 2: + rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL); + break; + case 3: + rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); + break; + case 4: + rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL); + break; + case 5: + rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, + "unsigned char", NULL); + break; + case 6: + rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL); + break; + case 7: + rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, + "unsigned short", NULL); + break; + case 8: + rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, + "unsigned int", NULL); + break; + case 9: + rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, + "unsigned", NULL); + case 10: + rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, + "unsigned long", NULL); + break; + case 11: + rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); + break; + case 12: + /* IEEE single precision (32 bit). */ + rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); + break; + case 13: + /* IEEE double precision (64 bit). */ + rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); + 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. */ + rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL); + break; + case 15: + rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL); + break; + case 16: + rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, + "boolean", NULL); + break; + case 17: + rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL); + break; + case 18: + rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL); + break; + case 19: + rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL); + break; + case 20: + rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, + "character", NULL); + break; + case 21: + rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, + "logical*1", NULL); + break; + case 22: + rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, + "logical*2", NULL); + break; + case 23: + rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, + "logical*4", NULL); + break; + case 24: + rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, + "logical", NULL); + break; + case 25: + /* Complex type consisting of two IEEE single precision values. */ + rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL); + break; + case 26: + /* Complex type consisting of two IEEE double precision values. */ + rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); + break; + case 27: + rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL); + break; + case 28: + rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL); + break; + case 29: + rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL); + break; + case 30: + rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL); + break; + case 31: + rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL); + break; + case 32: + rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, + "unsigned long long", NULL); + break; + case 33: + rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, + "logical*8", NULL); + break; + case 34: + rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL); + break; + } + negative_types[-typenum] = rettype; + return rettype; +} + +/* This page contains subroutines of read_type. */ + +/* 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 '$'), `*' holds the place for an operator + name (such as `+=') and `.' marks the end of the operator name. + + Returns 1 for success, 0 for failure. */ + +static int +read_member_functions (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + int nfn_fields = 0; + int length = 0; + /* Total number of member functions defined in this class. If the class + defines two `f' functions, and one `g' function, then this will have + the value 3. */ + int total_length = 0; + int i; + struct next_fnfield + { + struct next_fnfield *next; + struct fn_field fn_field; + } *sublist; + struct type *look_ahead_type; + struct next_fnfieldlist *new_fnlist; + struct next_fnfield *new_sublist; + char *main_fn_name; + register char *p; + + /* Process each list until we find something that is not a member function + or find the end of the functions. */ + + while (**pp != ';') + { + /* We should be positioned at the start of the function name. + Scan forward to find the first ':' and if it is not the + first of a "::" delimiter, then this is not a member function. */ + p = *pp; + while (*p != ':') + { + p++; + } + if (p[1] != ':') + { + break; + } + + sublist = NULL; + look_ahead_type = NULL; + length = 0; + + new_fnlist = (struct next_fnfieldlist *) + xmalloc (sizeof (struct next_fnfieldlist)); + make_cleanup (free, new_fnlist); + memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); + + if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) + { + /* This is a completely wierd case. In order to stuff in the + names that might contain colons (the usual name delimiter), + Mike Tiemann defined a different name format which is + signalled if the identifier is "op$". In that case, the + format is "op$::XXXX." where XXXX is the name. This is + used for names like "+" or "=". YUUUUUUUK! FIXME! */ + /* This lets the user type "break operator+". + We could just put in "+" as the name, but that wouldn't + work for "*". */ + static char opname[32] = {'o', 'p', CPLUS_MARKER}; + char *o = opname + 3; + + /* Skip past '::'. */ + *pp = p + 2; + + STABS_CONTINUE (pp, objfile); + p = *pp; + while (*p != '.') + { + *o++ = *p++; + } + main_fn_name = savestring (opname, o - opname); + /* Skip past '.' */ + *pp = p + 1; + } + else + { + main_fn_name = savestring (*pp, p - *pp); + /* Skip past '::'. */ + *pp = p + 2; + } + new_fnlist -> fn_fieldlist.name = main_fn_name; + + do + { + new_sublist = + (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); + make_cleanup (free, new_sublist); + memset (new_sublist, 0, sizeof (struct next_fnfield)); + + /* Check for and handle cretinous dbx symbol name continuation! */ + if (look_ahead_type == NULL) + { + /* Normal case. */ + STABS_CONTINUE (pp, objfile); + + new_sublist -> fn_field.type = read_type (pp, objfile); + if (**pp != ':') + { + /* Invalid symtab info for member function. */ + return 0; + } + } + else + { + /* g++ version 1 kludge */ + new_sublist -> fn_field.type = look_ahead_type; + look_ahead_type = NULL; + } + + (*pp)++; + p = *pp; + while (*p != ';') + { + p++; + } + + /* If this is just a stub, then we don't have the real name here. */ + + if (TYPE_FLAGS (new_sublist -> fn_field.type) & TYPE_FLAG_STUB) + { + if (!TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type)) + TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type) = type; + new_sublist -> fn_field.is_stub = 1; + } + new_sublist -> fn_field.physname = savestring (*pp, p - *pp); + *pp = p + 1; + + /* Set this member function's visibility fields. */ + switch (*(*pp)++) + { + case VISIBILITY_PRIVATE: + new_sublist -> fn_field.is_private = 1; + break; + case VISIBILITY_PROTECTED: + new_sublist -> fn_field.is_protected = 1; + break; + } + + STABS_CONTINUE (pp, objfile); + switch (**pp) + { + case 'A': /* Normal functions. */ + new_sublist -> fn_field.is_const = 0; + new_sublist -> fn_field.is_volatile = 0; + (*pp)++; + break; + case 'B': /* `const' member functions. */ + new_sublist -> fn_field.is_const = 1; + new_sublist -> fn_field.is_volatile = 0; + (*pp)++; + break; + case 'C': /* `volatile' member function. */ + new_sublist -> fn_field.is_const = 0; + new_sublist -> fn_field.is_volatile = 1; + (*pp)++; + break; + case 'D': /* `const volatile' member function. */ + new_sublist -> fn_field.is_const = 1; + new_sublist -> fn_field.is_volatile = 1; + (*pp)++; + break; + case '*': /* File compiled with g++ version 1 -- no info */ + case '?': + case '.': + break; + default: + complain (&const_vol_complaint, **pp); + break; + } + + switch (*(*pp)++) + { + case '*': + { + int nbits; + /* virtual member function, followed by index. + The sign bit is set to distinguish pointers-to-methods + from virtual function indicies. Since the array is + in words, the quantity must be shifted left by 1 + on 16 bit machine, and by 2 on 32 bit machine, forcing + the sign bit out, and usable as a valid index into + the array. Remove the sign bit here. */ + new_sublist -> fn_field.voffset = + (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2; + if (nbits != 0) + return 0; + + STABS_CONTINUE (pp, objfile); + if (**pp == ';' || **pp == '\0') + { + /* Must be g++ version 1. */ + new_sublist -> fn_field.fcontext = 0; + } + else + { + /* Figure out from whence this virtual function came. + It may belong to virtual function table of + one of its baseclasses. */ + look_ahead_type = read_type (pp, objfile); + if (**pp == ':') + { + /* g++ version 1 overloaded methods. */ + } + else + { + new_sublist -> fn_field.fcontext = look_ahead_type; + if (**pp != ';') + { + return 0; + } + else + { + ++*pp; + } + look_ahead_type = NULL; + } + } + break; + } + case '?': + /* static member function. */ + new_sublist -> fn_field.voffset = VOFFSET_STATIC; + if (strncmp (new_sublist -> fn_field.physname, + main_fn_name, strlen (main_fn_name))) + { + new_sublist -> fn_field.is_stub = 1; + } + break; + + default: + /* error */ + complain (&member_fn_complaint, (*pp)[-1]); + /* Fall through into normal member function. */ + + case '.': + /* normal member function. */ + new_sublist -> fn_field.voffset = 0; + new_sublist -> fn_field.fcontext = 0; + break; + } + + new_sublist -> next = sublist; + sublist = new_sublist; + length++; + STABS_CONTINUE (pp, objfile); + } + while (**pp != ';' && **pp != '\0'); + + (*pp)++; + + new_fnlist -> fn_fieldlist.fn_fields = (struct fn_field *) + obstack_alloc (&objfile -> type_obstack, + sizeof (struct fn_field) * length); + memset (new_fnlist -> fn_fieldlist.fn_fields, 0, + sizeof (struct fn_field) * length); + for (i = length; (i--, sublist); sublist = sublist -> next) + { + new_fnlist -> fn_fieldlist.fn_fields[i] = sublist -> fn_field; + } + + new_fnlist -> fn_fieldlist.length = length; + new_fnlist -> next = fip -> fnlist; + fip -> fnlist = new_fnlist; + nfn_fields++; + total_length += length; + STABS_CONTINUE (pp, objfile); + } + + if (nfn_fields) + { + ALLOCATE_CPLUS_STRUCT_TYPE (type); + TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) + TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); + memset (TYPE_FN_FIELDLISTS (type), 0, + sizeof (struct fn_fieldlist) * nfn_fields); + TYPE_NFN_FIELDS (type) = nfn_fields; + TYPE_NFN_FIELDS_TOTAL (type) = total_length; + } + + return 1; +} + +/* Special GNU C++ name. + + Returns 1 for success, 0 for failure. "failure" means that we can't + keep parsing and it's time for error_type(). */ + +static int +read_cpp_abbrev (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + register char *p; + char *name; + char cpp_abbrev; + struct type *context; + + p = *pp; + if (*++p == 'v') + { + name = NULL; + cpp_abbrev = *++p; + + *pp = p + 1; + + /* 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 = read_type (pp, objfile); + + switch (cpp_abbrev) + { + case 'f': /* $vf -- a virtual function table pointer */ + fip->list->field.name = + obconcat (&objfile->type_obstack, vptr_name, "", ""); + break; + + case 'b': /* $vb -- a virtual bsomethingorother */ + name = type_name_no_tag (context); + if (name == NULL) + { + complain (&invalid_cpp_type_complaint, symnum); + name = "FOO"; + } + fip->list->field.name = + obconcat (&objfile->type_obstack, vb_name, name, ""); + break; + + default: + complain (&invalid_cpp_abbrev_complaint, *pp); + fip->list->field.name = + obconcat (&objfile->type_obstack, + "INVALID_CPLUSPLUS_ABBREV", "", ""); + break; + } + + /* At this point, *pp points to the ':'. Skip it and read the + field type. */ + + p = ++(*pp); + if (p[-1] != ':') + { + complain (&invalid_cpp_abbrev_complaint, *pp); + return 0; + } + fip->list->field.type = read_type (pp, objfile); + if (**pp == ',') + (*pp)++; /* Skip the comma. */ + else + return 0; + + { + int nbits; + FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return 0; + } + /* This field is unpacked. */ + FIELD_BITSIZE (fip->list->field) = 0; + fip->list->visibility = VISIBILITY_PRIVATE; + } + else + { + complain (&invalid_cpp_abbrev_complaint, *pp); + /* We have no idea what syntax an unrecognized abbrev would have, so + better return 0. If we returned 1, we would need to at least advance + *pp to avoid an infinite loop. */ + return 0; + } + return 1; +} + +static void +read_one_struct_field (fip, pp, p, type, objfile) + struct field_info *fip; + char **pp; + char *p; + struct type *type; + struct objfile *objfile; +{ + /* The following is code to work around cfront generated stabs. + The stabs contains full mangled name for each field. + We try to demangle the name and extract the field name out of it. + */ + if (ARM_DEMANGLING && current_subfile->language == language_cplus) + { + char save_p; + char *dem, *dem_p; + save_p = *p; + *p = '\0'; + dem = cplus_demangle (*pp, DMGL_ANSI | DMGL_PARAMS); + if (dem != NULL) + { + dem_p = strrchr (dem, ':'); + if (dem_p != 0 && *(dem_p-1)==':') + dem_p++; + FIELD_NAME (fip->list->field) = + obsavestring (dem_p, strlen (dem_p), &objfile -> type_obstack); + } + else + { + FIELD_NAME (fip->list->field) = + obsavestring (*pp, p - *pp, &objfile -> type_obstack); + } + *p = save_p; + } + /* end of code for cfront work around */ + + else + fip -> list -> field.name = + obsavestring (*pp, p - *pp, &objfile -> type_obstack); + *pp = p + 1; + + /* This means we have a visibility for a field coming. */ + if (**pp == '/') + { + (*pp)++; + fip -> list -> visibility = *(*pp)++; + } + else + { + /* normal dbx-style format, no explicit visibility */ + fip -> list -> visibility = VISIBILITY_PUBLIC; + } + + fip -> list -> field.type = read_type (pp, objfile); + if (**pp == ':') + { + p = ++(*pp); +#if 0 + /* Possible future hook for nested types. */ + if (**pp == '!') + { + fip -> list -> field.bitpos = (long)-2; /* nested type */ + p = ++(*pp); + } + else ...; +#endif + while (*p != ';') + { + p++; + } + /* Static class member. */ + SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); + *pp = p + 1; + return; + } + else if (**pp != ',') + { + /* Bad structure-type format. */ + complain (&stabs_general_complaint, "bad structure-type format"); + return; + } + + (*pp)++; /* Skip the comma. */ + + { + int nbits; + FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits); + if (nbits != 0) + { + complain (&stabs_general_complaint, "bad structure-type format"); + return; + } + FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits); + if (nbits != 0) + { + complain (&stabs_general_complaint, "bad structure-type format"); + return; + } + } + + if (FIELD_BITPOS (fip->list->field) == 0 + && FIELD_BITSIZE (fip->list->field) == 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. */ + + /* Ignore this field. */ + fip -> list-> visibility = VISIBILITY_IGNORE; + } + else + { + /* Detect an unpacked field and mark it as such. + dbx gives a bit size for all fields. + Note that forward refs cannot be packed, + and treat enums as if they had the width of ints. */ + + struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); + + if (TYPE_CODE (field_type) != TYPE_CODE_INT + && TYPE_CODE (field_type) != TYPE_CODE_RANGE + && TYPE_CODE (field_type) != TYPE_CODE_BOOL + && TYPE_CODE (field_type) != TYPE_CODE_ENUM) + { + FIELD_BITSIZE (fip->list->field) = 0; + } + if ((FIELD_BITSIZE (fip->list->field) + == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) + || (TYPE_CODE (field_type) == TYPE_CODE_ENUM + && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT ) + ) + && + FIELD_BITPOS (fip->list->field) % 8 == 0) + { + FIELD_BITSIZE (fip->list->field) = 0; + } + } +} + + +/* 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 int +read_struct_fields (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + register char *p; + struct nextfield *new; + + /* We better set p right now, in case there are no fields at all... */ + + p = *pp; + + /* Read each data member type until we find the terminating ';' at the end of + the data member list, or break for some other reason such as finding the + start of the member function list. */ + + while (**pp != ';') + { + if (os9k_stabs && **pp == ',') break; + STABS_CONTINUE (pp, objfile); + /* Get space to record the next field's data. */ + new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); + make_cleanup (free, new); + memset (new, 0, sizeof (struct nextfield)); + new -> next = fip -> list; + fip -> list = new; + + /* Get the field name. */ + p = *pp; + + /* If is 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. */ + + if (is_cplus_marker (p[0]) && p[1] != '_') + { + if (!read_cpp_abbrev (fip, pp, type, objfile)) + return 0; + 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. */ + + while (*p != ':' && *p != '\0') + { + p++; + } + if (*p == '\0') + return 0; + + /* Check to see if we have hit the member functions yet. */ + if (p[1] == ':') + { + break; + } + read_one_struct_field (fip, pp, p, type, objfile); + } + if (p[0] == ':' && p[1] == ':') + { + /* chill the list of fields: the last entry (at the head) is a + partially constructed entry which we now scrub. */ + fip -> list = fip -> list -> next; + } + return 1; +} + +/* 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 1 for success, 0 for (error-type-inducing) failure. */ + +static int +read_baseclasses (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + int i; + struct nextfield *new; + + if (**pp != '!') + { + return 1; + } + else + { + /* Skip the '!' baseclass information marker. */ + (*pp)++; + } + + ALLOCATE_CPLUS_STRUCT_TYPE (type); + { + int nbits; + TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits); + if (nbits != 0) + return 0; + } + +#if 0 + /* Some stupid compilers have trouble with the following, so break + it up into simpler expressions. */ + TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) + TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); +#else + { + int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); + char *pointer; + + pointer = (char *) TYPE_ALLOC (type, num_bytes); + TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; + } +#endif /* 0 */ + + B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); + + for (i = 0; i < TYPE_N_BASECLASSES (type); i++) + { + new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); + make_cleanup (free, new); + memset (new, 0, sizeof (struct nextfield)); + new -> next = fip -> list; + fip -> list = new; + FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ + + STABS_CONTINUE (pp, objfile); + switch (**pp) + { + case '0': + /* Nothing to do. */ + break; + case '1': + SET_TYPE_FIELD_VIRTUAL (type, i); + break; + default: + /* Unknown character. Complain and treat it as non-virtual. */ + { + static struct complaint msg = { + "Unknown virtual character `%c' for baseclass", 0, 0}; + complain (&msg, **pp); + } + } + ++(*pp); + + new -> visibility = *(*pp)++; + switch (new -> visibility) + { + case VISIBILITY_PRIVATE: + case VISIBILITY_PROTECTED: + case VISIBILITY_PUBLIC: + break; + default: + /* Bad visibility format. Complain and treat it as + public. */ + { + static struct complaint msg = { + "Unknown visibility `%c' for baseclass", 0, 0}; + complain (&msg, new -> visibility); + new -> visibility = VISIBILITY_PUBLIC; + } + } + + { + int nbits; + + /* 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. */ + + FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits); + if (nbits != 0) + return 0; + } + + /* The last piece of baseclass information is the type of the + base class. Read it, and remember it's type name as this + field's name. */ + + new -> field.type = read_type (pp, objfile); + new -> field.name = type_name_no_tag (new -> field.type); + + /* skip trailing ';' and bump count of number of fields seen */ + if (**pp == ';') + (*pp)++; + else + return 0; + } + return 1; +} + +/* 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 int +read_tilde_fields (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + register char *p; + + STABS_CONTINUE (pp, objfile); + + /* If we are positioned at a ';', then skip it. */ + if (**pp == ';') + { + (*pp)++; + } + + if (**pp == '~') + { + (*pp)++; + + if (**pp == '=' || **pp == '+' || **pp == '-') + { + /* Obsolete flags that used to indicate the presence + of constructors and/or destructors. */ + (*pp)++; + } + + /* Read either a '%' or the final ';'. */ + if (*(*pp)++ == '%') + { + /* The next number is the type number of the base class + (possibly our own class) which supplies the vtable for + this class. Parse it out, and search that class to find + its vtable pointer, and install those into TYPE_VPTR_BASETYPE + and TYPE_VPTR_FIELDNO. */ + + struct type *t; + int i; + + t = read_type (pp, objfile); + p = (*pp)++; + while (*p != '\0' && *p != ';') + { + p++; + } + if (*p == '\0') + { + /* Premature end of symbol. */ + return 0; + } + + TYPE_VPTR_BASETYPE (type) = t; + if (type == t) /* Our own class provides vtbl ptr */ + { + for (i = TYPE_NFIELDS (t) - 1; + i >= TYPE_N_BASECLASSES (t); + --i) + { + if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name, + sizeof (vptr_name) - 1)) + { + TYPE_VPTR_FIELDNO (type) = i; + goto gotit; + } + } + /* Virtual function table field not found. */ + complain (&vtbl_notfound_complaint, TYPE_NAME (type)); + return 0; + } + else + { + TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); + } + + gotit: + *pp = p + 1; + } + } + return 1; +} + +static int +attach_fn_fields_to_type (fip, type) + struct field_info *fip; + register struct type *type; +{ + register int n; + + for (n = TYPE_NFN_FIELDS (type); + fip -> fnlist != NULL; + fip -> fnlist = fip -> fnlist -> next) + { + --n; /* Circumvent Sun3 compiler bug */ + TYPE_FN_FIELDLISTS (type)[n] = fip -> fnlist -> fn_fieldlist; + } + return 1; +} + +/* read cfront class static data. + pp points to string starting with the list of static data + eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;; + ^^^^^^^^ + + A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;; + ^ + */ + +static int +read_cfront_static_fields (fip, pp, type, objfile) + struct field_info *fip; + char **pp; + struct type *type; + struct objfile *objfile; +{ + struct nextfield * new; + struct type *stype; + char * sname; + struct symbol * ref_static=0; + + if (**pp==';') /* no static data; return */ + { + ++(*pp); + return 1; + } + + /* Process each field in the list until we find the terminating ";" */ + + /* eg: p = "as__1A ;;;" */ + STABS_CONTINUE (pp, objfile); /* handle \\ */ + while (**pp!=';' && (sname = get_substring (pp, ' '), sname)) + { + ref_static = lookup_symbol (sname, 0, VAR_NAMESPACE, 0, 0); /*demangled_name*/ + if (!ref_static) + { + static struct complaint msg = {"\ + Unable to find symbol for static data field %s\n", + 0, 0}; + complain (&msg, sname); + continue; + } + stype = SYMBOL_TYPE(ref_static); + + /* allocate a new fip */ + new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); + make_cleanup (free, new); + memset (new, 0, sizeof (struct nextfield)); + new -> next = fip -> list; + fip -> list = new; + + /* set visibility */ + /* FIXME! no way to tell visibility from stabs??? */ + new -> visibility = VISIBILITY_PUBLIC; + + /* set field info into fip */ + fip -> list -> field.type = stype; + + /* set bitpos & bitsize */ + SET_FIELD_PHYSNAME (fip->list->field, savestring (sname, strlen (sname))); + + /* set name field */ + /* The following is code to work around cfront generated stabs. + The stabs contains full mangled name for each field. + We try to demangle the name and extract the field name out of it. + */ + if (ARM_DEMANGLING) + { + char *dem, *dem_p; + dem = cplus_demangle (sname, DMGL_ANSI | DMGL_PARAMS); + if (dem != NULL) + { + dem_p = strrchr (dem, ':'); + if (dem_p != 0 && *(dem_p-1)==':') + dem_p++; + fip->list->field.name = + obsavestring (dem_p, strlen (dem_p), &objfile -> type_obstack); + } + else + { + fip->list->field.name = + obsavestring (sname, strlen (sname), &objfile -> type_obstack); + } + } /* end of code for cfront work around */ + } /* loop again for next static field */ + return 1; +} + +/* Copy structure fields to fip so attach_fields_to_type will work. + type has already been created with the initial instance data fields. + Now we want to be able to add the other members to the class, + so we want to add them back to the fip and reattach them again + once we have collected all the class members. */ + +static int +copy_cfront_struct_fields (fip, type, objfile) + struct field_info *fip; + struct type *type; + struct objfile *objfile; +{ + int nfields = TYPE_NFIELDS(type); + int i; + struct nextfield * new; + + /* Copy the fields into the list of fips and reset the types + to remove the old fields */ + + for (i=0; i<nfields; i++) + { + /* allocate a new fip */ + new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); + make_cleanup (free, new); + memset (new, 0, sizeof (struct nextfield)); + new -> next = fip -> list; + fip -> list = new; + + /* copy field info into fip */ + new -> field = TYPE_FIELD (type, i); + /* set visibility */ + if (TYPE_FIELD_PROTECTED (type, i)) + new -> visibility = VISIBILITY_PROTECTED; + else if (TYPE_FIELD_PRIVATE (type, i)) + new -> visibility = VISIBILITY_PRIVATE; + else + new -> visibility = VISIBILITY_PUBLIC; + } + /* Now delete the fields from the type since we will be + allocing new space once we get the rest of the fields + in attach_fields_to_type. + The pointer TYPE_FIELDS(type) is left dangling but should + be freed later by objstack_free */ + TYPE_FIELDS (type)=0; + TYPE_NFIELDS (type) = 0; + + return 1; +} + +/* Create the vector of fields, and record how big it is. + We need this info to record proper virtual function table information + for this class's virtual functions. */ + +static int +attach_fields_to_type (fip, type, objfile) + struct field_info *fip; + register struct type *type; + struct objfile *objfile; +{ + register int nfields = 0; + register int non_public_fields = 0; + register struct nextfield *scan; + + /* Count up the number of fields that we have, as well as taking note of + whether or not there are any non-public fields, which requires us to + allocate and build the private_field_bits and protected_field_bits + bitfields. */ + + for (scan = fip -> list; scan != NULL; scan = scan -> next) + { + nfields++; + if (scan -> visibility != VISIBILITY_PUBLIC) + { + non_public_fields++; + } + } + + /* Now we know how many fields there are, and whether or not there are any + non-public fields. Record the field count, allocate space for the + array of fields, and create blank visibility bitfields if necessary. */ + + TYPE_NFIELDS (type) = nfields; + TYPE_FIELDS (type) = (struct field *) + TYPE_ALLOC (type, sizeof (struct field) * nfields); + memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); + + if (non_public_fields) + { + ALLOCATE_CPLUS_STRUCT_TYPE (type); + + TYPE_FIELD_PRIVATE_BITS (type) = + (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); + B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); + + TYPE_FIELD_PROTECTED_BITS (type) = + (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); + B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); + + TYPE_FIELD_IGNORE_BITS (type) = + (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); + B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); + } + + /* Copy the saved-up fields into the field vector. Start from the head + of the list, adding to the tail of the field array, so that they end + up in the same order in the array in which they were added to the list. */ + + while (nfields-- > 0) + { + TYPE_FIELD (type, nfields) = fip -> list -> field; + switch (fip -> list -> visibility) + { + case VISIBILITY_PRIVATE: + SET_TYPE_FIELD_PRIVATE (type, nfields); + break; + + case VISIBILITY_PROTECTED: + SET_TYPE_FIELD_PROTECTED (type, nfields); + break; + + case VISIBILITY_IGNORE: + SET_TYPE_FIELD_IGNORE (type, nfields); + break; + + case VISIBILITY_PUBLIC: + break; + + default: + /* Unknown visibility. Complain and treat it as public. */ + { + static struct complaint msg = { + "Unknown visibility `%c' for field", 0, 0}; + complain (&msg, fip -> list -> visibility); + } + break; + } + fip -> list = fip -> list -> next; + } + return 1; +} + +/* 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;;". + + TYPE points to an incomplete type that needs to be filled in. + + OBJFILE points to the current objfile from which the stabs information is + being read. (Note that it is redundant in that TYPE also contains a pointer + to this same objfile, so it might be a good idea to eliminate it. FIXME). + */ + +static struct type * +read_struct_type (pp, type, objfile) + char **pp; + struct type *type; + struct objfile *objfile; +{ + struct cleanup *back_to; + struct field_info fi; + + fi.list = NULL; + fi.fnlist = NULL; + + back_to = make_cleanup (null_cleanup, 0); + + INIT_CPLUS_SPECIFIC (type); + TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; + + /* First comes the total size in bytes. */ + + { + int nbits; + TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits); + if (nbits != 0) + return error_type (pp, objfile); + } + + /* Now read the baseclasses, if any, read the regular C struct or C++ + class member fields, attach the fields to the type, read the C++ + member functions, attach them to the type, and then read any tilde + field (baseclass specifier for the class holding the main vtable). */ + + if (!read_baseclasses (&fi, pp, type, objfile) + || !read_struct_fields (&fi, pp, type, objfile) + || !attach_fields_to_type (&fi, type, objfile) + || !read_member_functions (&fi, pp, type, objfile) + || !attach_fn_fields_to_type (&fi, type) + || !read_tilde_fields (&fi, pp, type, objfile)) + { + type = error_type (pp, objfile); + } + + do_cleanups (back_to); + return (type); +} + +/* Read a definition of an array type, + and create and return a suitable type object. + Also creates a range type which represents the bounds of that + array. */ + +static struct type * +read_array_type (pp, type, objfile) + register char **pp; + register struct type *type; + struct objfile *objfile; +{ + struct type *index_type, *element_type, *range_type; + int lower, upper; + int adjustable = 0; + int nbits; + + /* 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[][]. */ + + if (os9k_stabs) + index_type = builtin_type_int; + else + { + index_type = read_type (pp, objfile); + if (**pp != ';') + /* Improper format of array type decl. */ + return error_type (pp, objfile); + ++*pp; + } + + if (!(**pp >= '0' && **pp <= '9') && **pp != '-') + { + (*pp)++; + adjustable = 1; + } + lower = read_huge_number (pp, os9k_stabs ? ',' : ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + if (!(**pp >= '0' && **pp <= '9') && **pp != '-') + { + (*pp)++; + adjustable = 1; + } + upper = read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + element_type = read_type (pp, objfile); + + if (adjustable) + { + lower = 0; + upper = -1; + } + + range_type = + create_range_type ((struct type *) NULL, index_type, lower, upper); + type = create_array_type (type, element_type, range_type); + + return type; +} + + +/* Read a definition of an enumeration type, + and create and return a suitable type object. + Also defines the symbols that represent the values of the type. */ + +static struct type * +read_enum_type (pp, type, objfile) + register char **pp; + register struct type *type; + struct objfile *objfile; +{ + register char *p; + char *name; + register long n; + register struct symbol *sym; + int nsyms = 0; + struct pending **symlist; + struct pending *osyms, *syms; + int o_nsyms; + int nbits; + int unsigned_enum = 1; + +#if 0 + /* FIXME! The stabs produced by Sun CC merrily define things that ought + to be file-scope, between N_FN entries, using N_LSYM. What's a mother + to do? For now, force all enum values to file scope. */ + if (within_function) + symlist = &local_symbols; + else +#endif + symlist = &file_symbols; + osyms = *symlist; + o_nsyms = osyms ? osyms->nsyms : 0; + + if (os9k_stabs) + { + /* Size. Perhaps this does not have to be conditionalized on + os9k_stabs (assuming the name of an enum constant can't start + with a digit). */ + read_huge_number (pp, 0, &nbits); + if (nbits != 0) + return error_type (pp, objfile); + } + + /* 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 == '-') + { + /* Skip over the type. */ + while (**pp != ':') + (*pp)++; + + /* Skip over the colon. */ + (*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. */ + while (**pp && **pp != ';' && **pp != ',') + { + STABS_CONTINUE (pp, objfile); + p = *pp; + while (*p != ':') p++; + name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack); + *pp = p + 1; + n = read_huge_number (pp, ',', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + sym = (struct symbol *) + obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); + memset (sym, 0, sizeof (struct symbol)); + SYMBOL_NAME (sym) = name; + SYMBOL_LANGUAGE (sym) = current_subfile -> language; + SYMBOL_CLASS (sym) = LOC_CONST; + SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; + SYMBOL_VALUE (sym) = n; + if (n < 0) + unsigned_enum = 0; + add_symbol_to_list (sym, symlist); + nsyms++; + } + + if (**pp == ';') + (*pp)++; /* Skip the semicolon. */ + + /* Now fill in the fields of the type-structure. */ + + TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT; + TYPE_CODE (type) = TYPE_CODE_ENUM; + TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; + if (unsigned_enum) + TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; + TYPE_NFIELDS (type) = nsyms; + TYPE_FIELDS (type) = (struct field *) + TYPE_ALLOC (type, sizeof (struct field) * nsyms); + memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); + + /* Find the symbols for the values and put them into the type. + The symbols can be found in the symlist that we put them on + to cause them to be defined. osyms contains the old value + of that symlist; everything up to there was defined by us. */ + /* Note that we preserve the order of the enum constants, so + that in something like "enum {FOO, LAST_THING=FOO}" we print + FOO, not LAST_THING. */ + + for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) + { + int last = syms == osyms ? o_nsyms : 0; + int j = syms->nsyms; + for (; --j >= last; --n) + { + struct symbol *xsym = syms->symbol[j]; + SYMBOL_TYPE (xsym) = type; + TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); + TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); + TYPE_FIELD_BITSIZE (type, n) = 0; + } + if (syms == osyms) + break; + } + + return type; +} + +/* Sun's ACC uses a somewhat saner method for specifying the builtin + typedefs in every file (for int, long, etc): + + type = b <signed> <width> <format type>; <offset>; <nbits> + signed = u or s. + optional format type = c or b for char or boolean. + 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 struct type * +read_sun_builtin_type (pp, typenums, objfile) + char **pp; + int typenums[2]; + struct objfile *objfile; +{ + int type_bits; + int nbits; + int signed_type; + enum type_code code = TYPE_CODE_INT; + + switch (**pp) + { + case 's': + signed_type = 1; + break; + case 'u': + signed_type = 0; + break; + default: + return error_type (pp, objfile); + } + (*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. + Boolean forms, e.g Fortran logical*X, put a b here. */ + + if (**pp == 'c') + (*pp)++; + else if (**pp == 'b') + { + code = TYPE_CODE_BOOL; + (*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. */ + read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + /* The second number is always 0, so ignore it too. */ + read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + /* The third number is the number of bits for this type. */ + type_bits = read_huge_number (pp, 0, &nbits); + if (nbits != 0) + return error_type (pp, objfile); + /* 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 (type_bits == 0) + return init_type (TYPE_CODE_VOID, 1, + signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *)NULL, + objfile); + else + return init_type (code, + type_bits / TARGET_CHAR_BIT, + signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *)NULL, + objfile); +} + +static struct type * +read_sun_floating_type (pp, typenums, objfile) + char **pp; + int typenums[2]; + struct objfile *objfile; +{ + int nbits; + int details; + int nbytes; + + /* The first number has more details about the type, for example + FN_COMPLEX. */ + details = read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + /* The second number is the number of bytes occupied by this type */ + nbytes = read_huge_number (pp, ';', &nbits); + if (nbits != 0) + return error_type (pp, objfile); + + if (details == NF_COMPLEX || details == NF_COMPLEX16 + || details == NF_COMPLEX32) + /* This is a type we can't handle, but we do know the size. + We also will be able to give it a name. */ + return init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); + + return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); +} + +/* Read a number from the string pointed to by *PP. + The value of *PP is advanced over the number. + If END is nonzero, the character that ends the + number must match END, or an error happens; + and that character is skipped if it does match. + If END is zero, *PP is left pointing to that character. + + If the number fits in a long, set *BITS to 0 and return the value. + If not, set *BITS to be the number of bits in the number and return 0. + + If encounter garbage, set *BITS to -1 and return 0. */ + +static long +read_huge_number (pp, end, bits) + char **pp; + int end; + int *bits; +{ + char *p = *pp; + int sign = 1; + long n = 0; + int radix = 10; + char overflow = 0; + int nbits = 0; + int c; + long upper_limit; + + if (*p == '-') + { + sign = -1; + p++; + } + + /* Leading zero means octal. GCC uses this to output values larger + than an int (because that would be hard in decimal). */ + if (*p == '0') + { + radix = 8; + p++; + } + + if (os9k_stabs) + upper_limit = ULONG_MAX / radix; + else + upper_limit = LONG_MAX / radix; + + while ((c = *p++) >= '0' && c < ('0' + radix)) + { + if (n <= upper_limit) + { + n *= radix; + n += c - '0'; /* FIXME this overflows anyway */ + } + else + overflow = 1; + + /* This depends on large values being output in octal, which is + what GCC does. */ + if (radix == 8) + { + if (nbits == 0) + { + if (c == '0') + /* Ignore leading zeroes. */ + ; + else if (c == '1') + nbits = 1; + else if (c == '2' || c == '3') + nbits = 2; + else + nbits = 3; + } + else + nbits += 3; + } + } + if (end) + { + if (c && c != end) + { + if (bits != NULL) + *bits = -1; + return 0; + } + } + else + --p; + + *pp = p; + if (overflow) + { + if (nbits == 0) + { + /* Large decimal constants are an error (because it is hard to + count how many bits are in them). */ + if (bits != NULL) + *bits = -1; + return 0; + } + + /* -0x7f is the same as 0x80. So deal with it by adding one to + the number of bits. */ + if (sign == -1) + ++nbits; + if (bits) + *bits = nbits; + } + else + { + if (bits) + *bits = 0; + return n * sign; + } + /* It's *BITS which has the interesting information. */ + return 0; +} + +static struct type * +read_range_type (pp, typenums, objfile) + char **pp; + int typenums[2]; + struct objfile *objfile; +{ + char *orig_pp = *pp; + int rangenums[2]; + long n2, n3; + int n2bits, n3bits; + int self_subrange; + struct type *result_type; + struct type *index_type = NULL; + + /* First comes a type we are a subrange of. + In C it is usually 0, 1 or the type being defined. */ + if (read_type_number (pp, rangenums) != 0) + return error_type (pp, objfile); + self_subrange = (rangenums[0] == typenums[0] && + rangenums[1] == typenums[1]); + + if (**pp == '=') + { + *pp = orig_pp; + index_type = read_type (pp, objfile); + } + + /* A semicolon should now follow; skip it. */ + 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. */ + n2 = read_huge_number (pp, ';', &n2bits); + n3 = read_huge_number (pp, ';', &n3bits); + + if (n2bits == -1 || n3bits == -1) + return error_type (pp, objfile); + + if (index_type) + goto handle_true_range; + + /* If limits are huge, must be large integral type. */ + if (n2bits != 0 || n3bits != 0) + { + char got_signed = 0; + char got_unsigned = 0; + /* Number of bits in the type. */ + int nbits = 0; + + /* Range from 0 to <large number> is an unsigned large integral type. */ + if ((n2bits == 0 && n2 == 0) && n3bits != 0) + { + got_unsigned = 1; + nbits = n3bits; + } + /* Range from <large number> to <large number>-1 is a large signed + integral type. Take care of the case where <large number> doesn't + fit in a long but <large number>-1 does. */ + else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) + || (n2bits != 0 && n3bits == 0 + && (n2bits == sizeof (long) * HOST_CHAR_BIT) + && n3 == LONG_MAX)) + { + got_signed = 1; + nbits = n2bits; + } + + if (got_signed || got_unsigned) + { + return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, + got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, + objfile); + } + else + return error_type (pp, objfile); + } + + /* A type defined as a subrange of itself, with bounds both 0, is void. */ + if (self_subrange && n2 == 0 && n3 == 0) + return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); + + /* If n3 is zero and n2 is positive, we want a floating type, and n2 + is the width in bytes. + + Fortran programs appear to use this for complex types also. To + distinguish between floats and complex, g77 (and others?) seem + to use self-subranges for the complexes, and subranges of int for + the floats. + + Also note that for complexes, g77 sets n2 to the size of one of + the member floats, not the whole complex beast. My guess is that + this was to work well with pre-COMPLEX versions of gdb. */ + + if (n3 == 0 && n2 > 0) + { + if (self_subrange) + { + return init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); + } + else + { + return init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); + } + } + + /* If the upper bound is -1, it must really be an unsigned int. */ + + else if (n2 == 0 && n3 == -1) + { + /* It is unsigned int or unsigned long. */ + /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5 + compatibility hack. */ + return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, + TYPE_FLAG_UNSIGNED, NULL, objfile); + } + + /* Special case: char is defined (Who knows why) as a subrange of + itself with range 0-127. */ + else if (self_subrange && n2 == 0 && n3 == 127) + return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); + + else if (current_symbol && SYMBOL_LANGUAGE (current_symbol) == language_chill + && !self_subrange) + goto handle_true_range; + + /* We used to do this only for subrange of self or subrange of int. */ + else if (n2 == 0) + { + if (n3 < 0) + /* n3 actually gives the size. */ + return init_type (TYPE_CODE_INT, - n3, TYPE_FLAG_UNSIGNED, + NULL, objfile); + if (n3 == 0xff) + return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, NULL, objfile); + if (n3 == 0xffff) + return init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, NULL, objfile); + + /* -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. */ + } + /* I think this is for Convex "long long". Since I don't know whether + Convex sets self_subrange, I also accept that particular size regardless + of self_subrange. */ + else if (n3 == 0 && n2 < 0 + && (self_subrange + || n2 == - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT)) + return init_type (TYPE_CODE_INT, - n2, 0, NULL, objfile); + else if (n2 == -n3 -1) + { + if (n3 == 0x7f) + return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); + if (n3 == 0x7fff) + return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); + if (n3 == 0x7fffffff) + return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); + } + + /* We have a real range type on our hands. Allocate space and + return a real pointer. */ + handle_true_range: + + if (self_subrange) + index_type = builtin_type_int; + else + index_type = *dbx_lookup_type (rangenums); + if (index_type == NULL) + { + /* Does this actually ever happen? Is that why we are worrying + about dealing with it rather than just calling error_type? */ + + static struct type *range_type_index; + + complain (&range_type_base_complaint, rangenums[1]); + if (range_type_index == NULL) + range_type_index = + init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, + 0, "range type index type", NULL); + index_type = range_type_index; + } + + result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); + return (result_type); +} + +/* Read in an argument list. This is a list of types, separated by commas + and terminated with END. Return the list of types read in, or (struct type + **)-1 if there is an error. */ + +static struct type ** +read_args (pp, end, objfile) + char **pp; + int end; + struct objfile *objfile; +{ + /* FIXME! Remove this arbitrary limit! */ + struct type *types[1024], **rval; /* allow for fns of 1023 parameters */ + int n = 0; + + while (**pp != end) + { + if (**pp != ',') + /* Invalid argument list: no ','. */ + return (struct type **)-1; + (*pp)++; + STABS_CONTINUE (pp, objfile); + types[n++] = read_type (pp, objfile); + } + (*pp)++; /* get past `end' (the ':' character) */ + + if (n == 1) + { + rval = (struct type **) xmalloc (2 * sizeof (struct type *)); + } + else if (TYPE_CODE (types[n-1]) != TYPE_CODE_VOID) + { + rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *)); + memset (rval + n, 0, sizeof (struct type *)); + } + else + { + rval = (struct type **) xmalloc (n * sizeof (struct type *)); + } + memcpy (rval, types, n * sizeof (struct type *)); + return rval; +} + +/* Common block handling. */ + +/* List of symbols declared since the last BCOMM. This list is a tail + of local_symbols. When ECOMM is seen, the symbols on the list + are noted so their proper addresses can be filled in later, + using the common block base address gotten from the assembler + stabs. */ + +static struct pending *common_block; +static int common_block_i; + +/* Name of the current common block. We get it from the BCOMM instead of the + ECOMM to match IBM documentation (even though IBM puts the name both places + like everyone else). */ +static char *common_block_name; + +/* Process a N_BCOMM symbol. The storage for NAME is not guaranteed + to remain after this function returns. */ + +void +common_block_start (name, objfile) + char *name; + struct objfile *objfile; +{ + if (common_block_name != NULL) + { + static struct complaint msg = { + "Invalid symbol data: common block within common block", + 0, 0}; + complain (&msg); + } + common_block = local_symbols; + common_block_i = local_symbols ? local_symbols->nsyms : 0; + common_block_name = obsavestring (name, strlen (name), + &objfile -> symbol_obstack); +} + +/* Process a N_ECOMM symbol. */ + +void +common_block_end (objfile) + struct objfile *objfile; +{ + /* Symbols declared since the BCOMM are to have the common block + start address added in when we know it. common_block and + common_block_i point to the first symbol after the BCOMM in + the local_symbols list; copy the list and hang it off the + symbol for the common block name for later fixup. */ + int i; + struct symbol *sym; + struct pending *new = 0; + struct pending *next; + int j; + + if (common_block_name == NULL) + { + static struct complaint msg = {"ECOMM symbol unmatched by BCOMM", 0, 0}; + complain (&msg); + return; + } + + sym = (struct symbol *) + obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); + memset (sym, 0, sizeof (struct symbol)); + /* Note: common_block_name already saved on symbol_obstack */ + SYMBOL_NAME (sym) = common_block_name; + SYMBOL_CLASS (sym) = LOC_BLOCK; + + /* Now we copy all the symbols which have been defined since the BCOMM. */ + + /* Copy all the struct pendings before common_block. */ + for (next = local_symbols; + next != NULL && next != common_block; + next = next->next) + { + for (j = 0; j < next->nsyms; j++) + add_symbol_to_list (next->symbol[j], &new); + } + + /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is + NULL, it means copy all the local symbols (which we already did + above). */ + + if (common_block != NULL) + for (j = common_block_i; j < common_block->nsyms; j++) + add_symbol_to_list (common_block->symbol[j], &new); + + SYMBOL_TYPE (sym) = (struct type *) new; + + /* Should we be putting local_symbols back to what it was? + Does it matter? */ + + i = hashname (SYMBOL_NAME (sym)); + SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; + global_sym_chain[i] = sym; + common_block_name = NULL; +} + +/* Add a common block's start address to the offset of each symbol + declared to be in it (by being between a BCOMM/ECOMM pair that uses + the common block name). */ + +static void +fix_common_block (sym, valu) + struct symbol *sym; + int valu; +{ + struct pending *next = (struct pending *) SYMBOL_TYPE (sym); + for ( ; next; next = next->next) + { + register int j; + for (j = next->nsyms - 1; j >= 0; j--) + SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; + } +} + + + +/* What about types defined as forward references inside of a small lexical + scope? */ +/* Add a type to the list of undefined types to be checked through + once this file has been read in. */ + +void +add_undefined_type (type) + struct type *type; +{ + if (undef_types_length == undef_types_allocated) + { + undef_types_allocated *= 2; + undef_types = (struct type **) + xrealloc ((char *) undef_types, + undef_types_allocated * sizeof (struct type *)); + } + undef_types[undef_types_length++] = type; +} + +/* Go through each undefined type, see if it's still undefined, and fix it + up if possible. We have two kinds of undefined types: + + TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. + Fix: update array length using the element bounds + and the target type's length. + TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not + yet defined at the time a pointer to it was made. + Fix: Do a full lookup on the struct/union tag. */ +void +cleanup_undefined_types () +{ + struct type **type; + + for (type = undef_types; type < undef_types + undef_types_length; type++) + { + switch (TYPE_CODE (*type)) + { + + case TYPE_CODE_STRUCT: + case TYPE_CODE_UNION: + case TYPE_CODE_ENUM: + { + /* Check if it has been defined since. Need to do this here + as well as in check_typedef to deal with the (legitimate in + C though not C++) case of several types with the same name + in different source files. */ + if (TYPE_FLAGS (*type) & TYPE_FLAG_STUB) + { + struct pending *ppt; + int i; + /* Name of the type, without "struct" or "union" */ + char *typename = TYPE_TAG_NAME (*type); + + if (typename == NULL) + { + static struct complaint msg = {"need a type name", 0, 0}; + complain (&msg); + break; + } + for (ppt = file_symbols; ppt; ppt = ppt->next) + { + for (i = 0; i < ppt->nsyms; i++) + { + struct symbol *sym = ppt->symbol[i]; + + if (SYMBOL_CLASS (sym) == LOC_TYPEDEF + && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE + && (TYPE_CODE (SYMBOL_TYPE (sym)) == + TYPE_CODE (*type)) + && STREQ (SYMBOL_NAME (sym), typename)) + { + memcpy (*type, SYMBOL_TYPE (sym), + sizeof (struct type)); + } + } + } + } + } + break; + + default: + { + static struct complaint msg = {"\ +GDB internal error. cleanup_undefined_types with bad type %d.", 0, 0}; + complain (&msg, TYPE_CODE (*type)); + } + break; + } + } + + undef_types_length = 0; +} + +/* Scan through all of the global symbols defined in the object file, + assigning values to the debugging symbols that need to be assigned + to. Get these symbols from the minimal symbol table. */ + +void +scan_file_globals (objfile) + struct objfile *objfile; +{ + int hash; + struct minimal_symbol *msymbol; + struct symbol *sym, *prev, *rsym; + struct objfile *resolve_objfile; + + /* SVR4 based linkers copy referenced global symbols from shared + libraries to the main executable. + If we are scanning the symbols for a shared library, try to resolve + them from the minimal symbols of the main executable first. */ + + if (symfile_objfile && objfile != symfile_objfile) + resolve_objfile = symfile_objfile; + else + resolve_objfile = objfile; + + while (1) + { + /* Avoid expensive loop through all minimal symbols if there are + no unresolved symbols. */ + for (hash = 0; hash < HASHSIZE; hash++) + { + if (global_sym_chain[hash]) + break; + } + if (hash >= HASHSIZE) + return; + + for (msymbol = resolve_objfile -> msymbols; + msymbol && SYMBOL_NAME (msymbol) != NULL; + msymbol++) + { + QUIT; + + /* Skip static symbols. */ + switch (MSYMBOL_TYPE (msymbol)) + { + case mst_file_text: + case mst_file_data: + case mst_file_bss: + continue; + default: + break; + } + + prev = NULL; + + /* Get the hash index and check all the symbols + under that hash index. */ + + hash = hashname (SYMBOL_NAME (msymbol)); + + for (sym = global_sym_chain[hash]; sym;) + { + if (SYMBOL_NAME (msymbol)[0] == SYMBOL_NAME (sym)[0] && + STREQ(SYMBOL_NAME (msymbol) + 1, SYMBOL_NAME (sym) + 1)) + { + + struct alias_list *aliases; + + /* Splice this symbol out of the hash chain and + assign the value we have to it. */ + if (prev) + { + SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); + } + else + { + global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); + } + + /* Check to see whether we need to fix up a common block. */ + /* Note: this code might be executed several times for + the same symbol if there are multiple references. */ + + /* If symbol has aliases, do minimal symbol fixups for each. + These live aliases/references weren't added to + global_sym_chain hash but may also need to be fixed up. */ + /* FIXME: Maybe should have added aliases to the global chain, resolved symbol name, then treated aliases as normal + symbols? Still, we wouldn't want to add_to_list. */ + /* Now do the same for each alias of this symbol */ + rsym = sym; + aliases = SYMBOL_ALIASES (sym); + while (rsym) + { + if (SYMBOL_CLASS (rsym) == LOC_BLOCK) + { + fix_common_block (rsym, + SYMBOL_VALUE_ADDRESS (msymbol)); + } + else + { + SYMBOL_VALUE_ADDRESS (rsym) + = SYMBOL_VALUE_ADDRESS (msymbol); + } + SYMBOL_SECTION (rsym) = SYMBOL_SECTION (msymbol); + if (aliases) + { + rsym = aliases->sym; + aliases = aliases->next; + } + else + rsym = NULL; + } + + + if (prev) + { + sym = SYMBOL_VALUE_CHAIN (prev); + } + else + { + sym = global_sym_chain[hash]; + } + } + else + { + prev = sym; + sym = SYMBOL_VALUE_CHAIN (sym); + } + } + } + if (resolve_objfile == objfile) + break; + resolve_objfile = objfile; + } + + /* Change the storage class of any remaining unresolved globals to + LOC_UNRESOLVED and remove them from the chain. */ + for (hash = 0; hash < HASHSIZE; hash++) + { + sym = global_sym_chain[hash]; + while (sym) + { + prev = sym; + sym = SYMBOL_VALUE_CHAIN (sym); + + /* Change the symbol address from the misleading chain value + to address zero. */ + SYMBOL_VALUE_ADDRESS (prev) = 0; + + /* Complain about unresolved common block symbols. */ + if (SYMBOL_CLASS (prev) == LOC_STATIC) + SYMBOL_CLASS (prev) = LOC_UNRESOLVED; + else + complain (&unresolved_sym_chain_complaint, + objfile -> name, SYMBOL_NAME (prev)); + } + } + memset (global_sym_chain, 0, sizeof (global_sym_chain)); +} + +/* Initialize anything that needs initializing when starting to read + a fresh piece of a symbol file, e.g. reading in the stuff corresponding + to a psymtab. */ + +void +stabsread_init () +{ +} + +/* Initialize anything that needs initializing when a completely new + symbol file is specified (not just adding some symbols from another + file, e.g. a shared library). */ + +void +stabsread_new_init () +{ + /* Empty the hash table of global syms looking for values. */ + memset (global_sym_chain, 0, sizeof (global_sym_chain)); +} + +/* Initialize anything that needs initializing at the same time as + start_symtab() is called. */ + +void start_stabs () +{ + global_stabs = NULL; /* AIX COFF */ + /* Leave FILENUM of 0 free for builtin types and this file's types. */ + n_this_object_header_files = 1; + type_vector_length = 0; + type_vector = (struct type **) 0; + + /* FIXME: If common_block_name is not already NULL, we should complain(). */ + common_block_name = NULL; + + os9k_stabs = 0; +} + +/* Call after end_symtab() */ + +void end_stabs () +{ + if (type_vector) + { + free ((char *) type_vector); + } + type_vector = 0; + type_vector_length = 0; + previous_stab_code = 0; +} + +void +finish_global_stabs (objfile) + struct objfile *objfile; +{ + if (global_stabs) + { + patch_block_stabs (global_symbols, global_stabs, objfile); + free ((PTR) global_stabs); + global_stabs = NULL; + } +} + +/* Initializer for this module */ + +void +_initialize_stabsread () +{ + undef_types_allocated = 20; + undef_types_length = 0; + undef_types = (struct type **) + xmalloc (undef_types_allocated * sizeof (struct type *)); +} |