| /* Support routines for decoding "stabs" debugging information format. |
| Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 1996, 1997, 1998, 1999, 2000 |
| 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 |
| |
| extern void _initialize_stabsread (void); |
| |
| /* 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 (struct field_info *, char **, char *, |
| struct type *, struct objfile *); |
| |
| static char *get_substring (char **, int); |
| |
| static struct type *dbx_alloc_type (int[2], struct objfile *); |
| |
| static long read_huge_number (char **, int, int *); |
| |
| static struct type *error_type (char **, struct objfile *); |
| |
| static void |
| patch_block_stabs (struct pending *, struct pending_stabs *, |
| struct objfile *); |
| |
| static void fix_common_block (struct symbol *, int); |
| |
| static int read_type_number (char **, int *); |
| |
| static struct type *read_range_type (char **, int[2], struct objfile *); |
| |
| static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
| |
| static struct type *read_sun_floating_type (char **, int[2], |
| struct objfile *); |
| |
| static struct type *read_enum_type (char **, struct type *, struct objfile *); |
| |
| static struct type *rs6000_builtin_type (int); |
| |
| static int |
| read_member_functions (struct field_info *, char **, struct type *, |
| struct objfile *); |
| |
| static int |
| read_struct_fields (struct field_info *, char **, struct type *, |
| struct objfile *); |
| |
| static int |
| read_baseclasses (struct field_info *, char **, struct type *, |
| struct objfile *); |
| |
| static int |
| read_tilde_fields (struct field_info *, char **, struct type *, |
| struct objfile *); |
| |
| static int attach_fn_fields_to_type (struct field_info *, struct type *); |
| |
| static int |
| attach_fields_to_type (struct field_info *, struct type *, struct objfile *); |
| |
| static struct type *read_struct_type (char **, struct type *, |
| struct objfile *); |
| |
| static struct type *read_array_type (char **, struct type *, |
| struct objfile *); |
| |
| static struct type **read_args (char **, int, struct objfile *); |
| |
| static int |
| read_cpp_abbrev (struct field_info *, char **, struct type *, |
| struct objfile *); |
| |
| /* new functions added for cfront support */ |
| |
| static int |
| copy_cfront_struct_fields (struct field_info *, struct type *, |
| struct objfile *); |
| |
| static char *get_cfront_method_physname (char *); |
| |
| static int |
| read_cfront_baseclasses (struct field_info *, char **, |
| struct type *, struct objfile *); |
| |
| static int |
| read_cfront_static_fields (struct field_info *, char **, |
| struct type *, struct objfile *); |
| static int |
| read_cfront_member_functions (struct field_info *, char **, |
| struct type *, struct objfile *); |
| |
| /* end new functions added for cfront support */ |
| |
| static void |
| add_live_range (struct objfile *, struct symbol *, CORE_ADDR, CORE_ADDR); |
| |
| static int resolve_live_range (struct objfile *, struct symbol *, char *); |
| |
| static int process_reference (char **string); |
| |
| static CORE_ADDR ref_search_value (int refnum); |
| |
| static int |
| resolve_symbol_reference (struct objfile *, struct symbol *, char *); |
| |
| void stabsread_clear_cache (void); |
| |
| 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. */ |
| |
| #if !defined (BELIEVE_PCC_PROMOTION) |
| #define BELIEVE_PCC_PROMOTION 0 |
| #endif |
| #if !defined (BELIEVE_PCC_PROMOTION_TYPE) |
| #define BELIEVE_PCC_PROMOTION_TYPE 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 (struct type **); |
| |
| static void |
| os9k_init_type_vector (struct type **tv) |
| { |
| unsigned 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 (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 (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 (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 (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; |
| } |
| |
| |
| #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 (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 (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 (struct field_info *fip, char **pp, struct type *type, |
| struct objfile *objfile) |
| { |
| 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 (xfree, 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 (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 (xfree, 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 (xfree, 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 (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 (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; |
| |
| /* This file maintains a cache of stabs aliases found in the symbol |
| table. If the symbol table changes, this cache must be cleared |
| or we are left holding onto data in invalid obstacks. */ |
| void |
| stabsread_clear_cache (void) |
| { |
| ref_count = 0; |
| 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 (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 (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 (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 (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 (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 (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 (objfile); |
| break; |
| case N_DATA: |
| SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile); |
| break; |
| case N_BSS: |
| SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile); |
| 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 (BELIEVE_PCC_PROMOTION_TYPE) |
| { |
| /* This 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 |
| { |
| /* 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; |
| } |
| } |
| |
| 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 + NUM_PSEUDO_REGS) |
| { |
| complain (®_value_complaint, SYMBOL_VALUE (sym), |
| NUM_REGS + NUM_PSEUDO_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 + NUM_PSEUDO_REGS) |
| { |
| complain (®_value_complaint, SYMBOL_VALUE (sym), |
| NUM_REGS + NUM_PSEUDO_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_P () |
| && 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. */ |
| /* ezannoni: 2000-10-26. This seems to apply for |
| versions of gcc older than 2.8. This was the original |
| problem: with the following code gdb would tell that |
| the type for name1 is caddr_t, and func is char() |
| typedef char *caddr_t; |
| char *name2; |
| struct x |
| { |
| char *name1; |
| } xx; |
| char *func() |
| { |
| } |
| main () {} |
| */ |
| |
| /* Pascal accepts names for pointer types. */ |
| if (current_subfile->language == language_pascal) |
| { |
| TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym); |
| } |
| } |
| 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 + NUM_PSEUDO_REGS) |
| { |
| complain (®_value_complaint, SYMBOL_VALUE (sym), |
| NUM_REGS + NUM_PSEUDO_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_P () |
| && 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[0] == 'l' && p[1] == '(') |
| { |
| /* 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 (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 (struct objfile *objfile, struct symbol *sym, CORE_ADDR start, |
| CORE_ADDR 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 (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 (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 (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 '$'), `*' holds the place for an operator |
| name (such as `+=') and `.' marks the end of the operator name. |
| |
| Returns 1 for success, 0 for failure. */ |
| |
| static int |
| read_member_functions (struct field_info *fip, char **pp, struct type *type, |
| struct objfile *objfile) |
| { |
| int nfn_fields = 0; |
| int length = 0; |
| /* Total number of member functions defined in this class. If the class |
| defines two `f' functions, and one `g' function, then this will have |
| the value 3. */ |
| int total_length = 0; |
| int i; |
| struct next_fnfield |
| { |
| struct next_fnfield *next; |
| struct fn_field fn_field; |
| } |
| *sublist; |
| struct type *look_ahead_type; |
| struct next_fnfieldlist *new_fnlist; |
| struct next_fnfield *new_sublist; |
| char *main_fn_name; |
| register char *p; |
| |
| /* Process each list until we find something that is not a member function |
| or find the end of the functions. */ |
| |
| while (**pp != ';') |
| { |
| /* We should be positioned at the start of the function name. |
| Scan forward to find the first ':' and if it is not the |
| first of a "::" delimiter, then this is not a member function. */ |
| p = *pp; |
| while (*p != ':') |
| { |
| p++; |
| } |
| if (p[1] != ':') |
| { |
| break; |
| } |
| |
| sublist = NULL; |
| look_ahead_type = NULL; |
| length = 0; |
| |
| new_fnlist = (struct next_fnfieldlist *) |
| xmalloc (sizeof (struct next_fnfieldlist)); |
| make_cleanup (xfree, new_fnlist); |
| memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
| |
| if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
| { |
| /* This is a completely wierd case. In order to stuff in the |
| names that might contain colons (the usual name delimiter), |
| Mike Tiemann defined a different name format which is |
| signalled if the identifier is "op$". 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 (xfree, 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 (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 */ |
| name = type_name_no_tag (context); |
| if (name == NULL) |
| { |
| name = ""; |
| } |
| fip->list->field.name = |
| obconcat (&objfile->type_obstack, vptr_name, 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 (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 (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 (xfree, 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; |
| } |
| /* *INDENT-OFF* */ |
| /* 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. */ |
| /* *INDENT-ON* */ |
| |
| |
| |
| static int |
| read_baseclasses (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 (xfree, 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 (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 (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 (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 (xfree, 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 (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 (xfree, 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 (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 (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 (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 (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 (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 (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 (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 (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) |
| { |
| struct type *float_type |
| = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); |
| |
| if (self_subrange) |
| { |
| struct type *complex_type = |
| init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); |
| TYPE_TARGET_TYPE (complex_type) = float_type; |
| return complex_type; |
| } |
| else |
| return float_type; |
| } |
| |
| /* 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) |
| { |
| /* -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. */ |
| |
| if (n3 < 0) |
| /* n3 actually gives the size. */ |
| return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
| NULL, objfile); |
| |
| /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
| unsigned n-byte integer. But do require n to be a power of |
| two; we don't want 3- and 5-byte integers flying around. */ |
| { |
| int bytes; |
| unsigned long bits; |
| |
| bits = n3; |
| for (bytes = 0; (bits & 0xff) == 0xff; bytes++) |
| bits >>= 8; |
| if (bits == 0 |
| && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ |
| return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, |
| objfile); |
| } |
| } |
| /* 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 (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 (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 (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 (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 (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 (void) |
| { |
| 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 (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 (void) |
| { |
| } |
| |
| /* 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 (void) |
| { |
| /* 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 (void) |
| { |
| 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 (void) |
| { |
| if (type_vector) |
| { |
| xfree (type_vector); |
| } |
| type_vector = 0; |
| type_vector_length = 0; |
| previous_stab_code = 0; |
| } |
| |
| void |
| finish_global_stabs (struct objfile *objfile) |
| { |
| if (global_stabs) |
| { |
| patch_block_stabs (global_symbols, global_stabs, objfile); |
| xfree (global_stabs); |
| global_stabs = NULL; |
| } |
| } |
| |
| /* Initializer for this module */ |
| |
| void |
| _initialize_stabsread (void) |
| { |
| undef_types_allocated = 20; |
| undef_types_length = 0; |
| undef_types = (struct type **) |
| xmalloc (undef_types_allocated * sizeof (struct type *)); |
| } |