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authorFred Fish <fnf@specifix.com>1992-07-28 04:22:18 +0000
committerFred Fish <fnf@specifix.com>1992-07-28 04:22:18 +0000
commitd07734e31fb134371b9bea71fc2736f7c28f4433 (patch)
tree807bcfb860cf9fc6eb8ba46c2a707cd2311264d8 /gdb/stabsread.c
parent9e2b3581cb9edfd9977256539e64cf0d5f0f224d (diff)
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* Makefile.in (VERSION): Bump to 4.6.2.
* Makefile.in (SFILES_MAINDIR): Add stabsread.c * Makefile.in (OBS): Add stabsread.o * Makefile.in (stabsread.o): Add build rule. * stabsread.c, stabsread.h: New files. * buildsym.c: Split out stabs specific support to stabsread.c. * buildsym.h: Split out stabs specific support to stabsread.h. * dbxread.c (stabsread.h): Include * dbxread.c (dbx_new_init): Call stabsread_new_init. * dbxread.c (dbx_psymtab_to_symtab_1): Call stabsread_init. * dbxread.c (read_ofile_symtab): Call end_stabs. * dbxread.c (process_one_symbol): Call end_stabs and start_stabs. * dbxread.c (elfstab_build_psymtabs): Call stabsread_new_init. * dwarfread.c (psymtab_to_symtab_1): Call buildsym_init, add really_free_pendings to cleanups. * elfread.c (elf_new_init): Call stabsread_new_init. * gdbtypes.c: Small changes to maintenance commands. * mipsread.c (stabsread.h): Include. * mipsread.c (psymtab_to_symtab_1): Call end_stabs. * xcoffread.c (stabsread.h): Include. * xcoffread.c (global_stabs): Remove redundant def. * xcoffread.c (read_xcoff_symtab): Call start_stabs and end_stabs.
Diffstat (limited to 'gdb/stabsread.c')
-rw-r--r--gdb/stabsread.c3004
1 files changed, 3004 insertions, 0 deletions
diff --git a/gdb/stabsread.c b/gdb/stabsread.c
new file mode 100644
index 0000000..d6da541
--- /dev/null
+++ b/gdb/stabsread.c
@@ -0,0 +1,3004 @@
+/* Support routines for decoding "stabs" debugging information format.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
+ 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., 675 Mass Ave, Cambridge, MA 02139, 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 "bfd.h"
+#include "obstack.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "symfile.h" /* Needed for "struct complaint" */
+#include "objfiles.h"
+#include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
+#include "buildsym.h"
+
+/* Ask stabsread.h to define the vars it normally declares `extern'. */
+#define EXTERN /**/
+#include "stabsread.h" /* Our own declarations */
+#undef EXTERN
+
+static struct type *
+dbx_alloc_type PARAMS ((int [2], struct objfile *));
+
+static void
+read_huge_number PARAMS ((char **, int, long *, int *));
+
+static void
+patch_block_stabs PARAMS ((struct pending *, struct pending_stabs *,
+ struct objfile *));
+
+static void
+fix_common_block PARAMS ((struct symbol *, int));
+
+static struct type *
+read_range_type PARAMS ((char **, int [2], struct objfile *));
+
+static struct type *
+read_sun_builtin_type PARAMS ((char **, int [2], struct objfile *));
+
+static struct type *
+read_sun_floating_type PARAMS ((char **, int [2], struct objfile *));
+
+static struct type *
+read_enum_type PARAMS ((char **, struct type *, struct objfile *));
+
+static struct type *
+read_struct_type PARAMS ((char **, struct type *, struct objfile *));
+
+static struct type *
+read_array_type PARAMS ((char **, struct type *, struct objfile *));
+
+static struct type **
+read_args PARAMS ((char **, int, struct objfile *));
+
+static const char vptr_name[] = { '_','v','p','t','r',CPLUS_MARKER,'\0' };
+static const char vb_name[] = { '_','v','b',CPLUS_MARKER,'\0' };
+
+/* Define this as 1 if a pcc declaration of a char or short argument
+ gives the correct address. Otherwise assume pcc gives the
+ address of the corresponding int, which is not the same on a
+ big-endian machine. */
+
+#ifndef BELIEVE_PCC_PROMOTION
+#define BELIEVE_PCC_PROMOTION 0
+#endif
+
+/* During some calls to read_type (and thus to read_range_type), this
+ contains the name of the type being defined. Range types are only
+ used in C as basic types. We use the name to distinguish the otherwise
+ identical basic types "int" and "long" and their unsigned versions.
+ FIXME, this should disappear with better type management. */
+
+static char *long_kludge_name;
+
+#if 0
+struct complaint dbx_class_complaint =
+{
+ "encountered DBX-style class variable debugging information.\n\
+You seem to have compiled your program with \
+\"g++ -g0\" instead of \"g++ -g\".\n\
+Therefore GDB will not know about your class variables", 0, 0
+};
+#endif
+
+struct complaint invalid_cpp_abbrev_complaint =
+ {"invalid C++ abbreviation `%s'", 0, 0};
+
+struct complaint invalid_cpp_type_complaint =
+ {"C++ abbreviated type name unknown at symtab pos %d", 0, 0};
+
+struct complaint member_fn_complaint =
+ {"member function type missing, got '%c'", 0, 0};
+
+struct complaint const_vol_complaint =
+ {"const/volatile indicator missing, got '%c'", 0, 0};
+
+struct complaint error_type_complaint =
+ {"debug info mismatch between compiler and debugger", 0, 0};
+
+struct complaint invalid_member_complaint =
+ {"invalid (minimal) member type data format at symtab pos %d.", 0, 0};
+
+struct complaint range_type_base_complaint =
+ {"base type %d of range type is not defined", 0, 0};
+
+struct complaint reg_value_complaint =
+ {"register number too large in symbol %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;
+
+
+int
+hashname (name)
+ char *name;
+{
+ register char *p = name;
+ register int total = p[0];
+ register int c;
+
+ c = p[1];
+ total += c << 2;
+ if (c)
+ {
+ c = p[2];
+ total += c << 4;
+ if (c)
+ {
+ total += p[3] << 6;
+ }
+ }
+
+ /* Ensure result is positive. */
+ if (total < 0)
+ {
+ total += (1000 << 6);
+ }
+ return (total % HASHSIZE);
+}
+
+
+/* Look up a dbx type-number pair. Return the address of the slot
+ where the type for that number-pair is stored.
+ The number-pair is in TYPENUMS.
+
+ This can be used for finding the type associated with that pair
+ or for associating a new type with the pair. */
+
+struct type **
+dbx_lookup_type (typenums)
+ int typenums[2];
+{
+ register int filenum = typenums[0];
+ register int index = typenums[1];
+ unsigned old_len;
+ register int real_filenum;
+ register struct header_file *f;
+ int f_orig_length;
+
+ if (filenum == -1) /* -1,-1 is for temporary types. */
+ return 0;
+
+ if (filenum < 0 || filenum >= n_this_object_header_files)
+ error ("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
+ filenum, index, symnum);
+
+ if (filenum == 0)
+ {
+ /* 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 **)
+ malloc (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 *));
+ }
+ return (&type_vector[index]);
+ }
+ else
+ {
+ real_filenum = this_object_header_files[filenum];
+
+ if (real_filenum >= n_header_files)
+ {
+ abort ();
+ }
+
+ f = &header_files[real_filenum];
+
+ f_orig_length = f->length;
+ if (index >= f_orig_length)
+ {
+ while (index >= f->length)
+ {
+ f->length *= 2;
+ }
+ f->vector = (struct type **)
+ xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
+ memset (&f->vector[f_orig_length], 0,
+ (f->length - f_orig_length) * sizeof (struct type *));
+ }
+ return (&f->vector[index]);
+ }
+}
+
+/* Make sure there is a type allocated for type numbers TYPENUMS
+ and return the type object.
+ This can create an empty (zeroed) type object.
+ TYPENUMS may be (-1, -1) to return a new type object that is not
+ put into the type vector, and so may not be referred to by number. */
+
+static struct type *
+dbx_alloc_type (typenums, objfile)
+ int typenums[2];
+ struct objfile *objfile;
+{
+ register struct type **type_addr;
+
+ if (typenums[0] == -1)
+ {
+ return (alloc_type (objfile));
+ }
+
+ type_addr = dbx_lookup_type (typenums);
+
+ /* If we are referring to a type not known at all yet,
+ allocate an empty type for it.
+ We will fill it in later if we find out how. */
+ if (*type_addr == 0)
+ {
+ *type_addr = alloc_type (objfile);
+ }
+
+ return (*type_addr);
+}
+
+/* for all the stabs in a given stab vector, build appropriate types
+ and fix their symbols in given symbol vector. */
+
+static void
+patch_block_stabs (symbols, stabs, objfile)
+ struct pending *symbols;
+ struct pending_stabs *stabs;
+ struct objfile *objfile;
+{
+ int ii;
+ char *name;
+ char *pp;
+ struct symbol *sym;
+
+ if (stabs)
+ {
+
+ /* for all the stab entries, find their corresponding symbols and
+ patch their types! */
+
+ for (ii = 0; ii < stabs->count; ++ii)
+ {
+ name = stabs->stab[ii];
+ pp = (char*) strchr (name, ':');
+ sym = find_symbol_in_list (symbols, name, pp-name);
+ if (!sym)
+ {
+#ifndef IBM6000_TARGET
+ printf ("ERROR! stab symbol not found!\n"); /* FIXME */
+#endif
+ }
+ 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. */
+
+void
+read_type_number (pp, typenums)
+ register char **pp;
+ register int *typenums;
+{
+ if (**pp == '(')
+ {
+ (*pp)++;
+ typenums[0] = read_number (pp, ',');
+ typenums[1] = read_number (pp, ')');
+ }
+ else
+ {
+ typenums[0] = 0;
+ typenums[1] = read_number (pp, 0);
+ }
+}
+
+
+/* To handle GNU C++ typename abbreviation, we need to be able to
+ fill in a type's name as soon as space for that type is allocated.
+ `type_synonym_name' is the name of the type being allocated.
+ It is cleared as soon as it is used (lest all allocated types
+ get this name). */
+
+static char *type_synonym_name;
+
+/* ARGSUSED */
+struct symbol *
+define_symbol (valu, string, desc, type, objfile)
+ unsigned int 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;
+ struct type *temptype;
+
+ /* 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 creat 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;
+
+ /* If a nameless stab entry, all we need is the type, not the symbol.
+ e.g. ":t10=*2" */
+ nameless = (p == string);
+
+ sym = (struct symbol *)
+ obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol));
+
+ 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 (string[0] == CPLUS_MARKER)
+ {
+ /* 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;
+
+ default:
+ abort ();
+ }
+ }
+ else
+ {
+ normal:
+ SYMBOL_NAME (sym) = (char *)
+ obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1));
+ /* Open-coded bcopy--saves function call time. */
+ {
+ register char *p1 = string;
+ register char *p2 = SYMBOL_NAME (sym);
+ while (p1 != p)
+ {
+ *p2++ = *p1++;
+ }
+ *p2++ = '\0';
+ }
+ }
+ p++;
+ /* Determine the type of name being defined. */
+ /* 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. */
+ /* (Peter Watkins @ Computervision)
+ Handle Sun-style local fortran array types 'ar...' .
+ (gnu@cygnus.com) -- this strchr() handles them properly?
+ (tiemann@cygnus.com) -- 'C' is for catch. */
+
+#ifdef IBM6000_TARGET
+
+ /* 'R' is for register parameters. */
+
+ if (!strchr ("cfFGpPrStTvVXCR", *p))
+
+#else
+
+ if (!strchr ("cfFGpPrStTvVXC", *p))
+
+#endif
+ deftype = 'l';
+ else
+ deftype = *p++;
+
+ /* 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 (deftype == 'c')
+ {
+ if (*p++ != '=')
+ error ("Invalid symbol data at symtab pos %d.", symnum);
+ switch (*p++)
+ {
+ case 'r':
+ {
+ double d = atof (p);
+ char *dbl_valu;
+
+ SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
+ FT_DBL_PREC_FLOAT);
+ dbl_valu = (char *)
+ obstack_alloc (&objfile -> type_obstack,
+ sizeof (double));
+ memcpy (dbl_valu, &d, sizeof (double));
+ SWAP_TARGET_AND_HOST (dbl_valu, sizeof (double));
+ SYMBOL_VALUE_BYTES (sym) = dbl_valu;
+ SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
+ }
+ break;
+ case 'i':
+ {
+ SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
+ FT_INTEGER);
+ SYMBOL_VALUE (sym) = atoi (p);
+ SYMBOL_CLASS (sym) = LOC_CONST;
+ }
+ break;
+ case 'e':
+ /* 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,;"). */
+ {
+ int typenums[2];
+
+ read_type_number (&p, typenums);
+ if (*p++ != ',')
+ error ("Invalid symbol data: no comma in enum const symbol");
+
+ SYMBOL_TYPE (sym) = *dbx_lookup_type (typenums);
+ SYMBOL_VALUE (sym) = atoi (p);
+ SYMBOL_CLASS (sym) = LOC_CONST;
+ }
+ break;
+ default:
+ error ("Invalid symbol data at symtab pos %d.", symnum);
+ }
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &file_symbols);
+ return sym;
+ }
+
+ /* Now usually comes a number that says which data type,
+ and possibly more stuff to define the type
+ (all of which is handled by read_type) */
+
+ if (deftype == 'p' && *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)));
+ }
+
+#ifdef IBM6000_TARGET
+ else if (deftype == 'R')
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
+#endif
+
+ else
+ {
+ /* The symbol class letter is followed by a type (typically the
+ type of the symbol, or its return-type, or etc). Read it. */
+
+ synonym = *p == 't';
+
+ if (synonym)
+ {
+ p += 1;
+ type_synonym_name = obsavestring (SYMBOL_NAME (sym),
+ strlen (SYMBOL_NAME (sym)),
+ &objfile -> symbol_obstack);
+ }
+
+ /* Here we save the name of the symbol for read_range_type, which
+ ends up reading in the basic types. In stabs, unfortunately there
+ is no distinction between "int" and "long" types except their
+ names. Until we work out a saner type policy (eliminating most
+ builtin types and using the names specified in the files), we
+ save away the name so that far away from here in read_range_type,
+ we can examine it to decide between "int" and "long". FIXME. */
+ long_kludge_name = SYMBOL_NAME (sym);
+
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
+ }
+
+ switch (deftype)
+ {
+ case 'C':
+ /* The name of a caught exception. */
+ 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_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)
+ {
+#if 0
+ /* This code doesn't work -- it needs to realloc and can't. */
+ /* Attempt to set up to record a function prototype... */
+ struct type *new = (struct type *)
+ obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct type));
+
+ /* Generate a template for the type of this function. The
+ types of the arguments will be added as we read the symbol
+ table. */
+ *new = *lookup_function_type (SYMBOL_TYPE(sym));
+ SYMBOL_TYPE(sym) = new;
+ TYPE_OBJFILE (new) = objfile;
+ in_function_type = new;
+#else
+ SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
+#endif
+ }
+ /* fall into process_prototype_types */
+
+ process_prototype_types:
+ /* Sun acc puts declared types of arguments here. We don't care
+ about their actual types (FIXME -- we should remember the whole
+ function prototype), but the list may define some new types
+ that we have to remember, so we must scan it now. */
+ while (*p == ';') {
+ p++;
+ read_type (&p, objfile);
+ }
+ break;
+
+ case 'F':
+ /* A global function definition. */
+ 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. */
+ i = hashname (SYMBOL_NAME (sym));
+ SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
+ global_sym_chain[i] = sym;
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ 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 'l':
+ SYMBOL_CLASS (sym) = LOC_LOCAL;
+ SYMBOL_VALUE (sym) = valu;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &local_symbols);
+ break;
+
+ case 'p':
+ /* 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;
+#if 0
+ /* This doesn't work yet. */
+ add_param_to_type (&in_function_type, sym);
+#endif
+ add_symbol_to_list (sym, &local_symbols);
+
+ /* If it's gcc-compiled, if it says `short', believe it. */
+ if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
+ break;
+
+#if defined(BELIEVE_PCC_PROMOTION_TYPE)
+ /* This macro is defined on machines (e.g. sparc) where
+ we should believe the type of a PCC 'short' argument,
+ but shouldn't believe the address (the address is
+ the address of the corresponding int). Note that
+ this is only different from the BELIEVE_PCC_PROMOTION
+ case on big-endian machines.
+
+ 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 no 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. */
+
+ temptype = lookup_fundamental_type (objfile, FT_INTEGER);
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
+ && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype))
+ {
+ SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype)
+ - TYPE_LENGTH (SYMBOL_TYPE (sym));
+ }
+ break;
+
+#else /* no BELIEVE_PCC_PROMOTION_TYPE. */
+
+ /* If PCC says a parameter is a short or a char,
+ it is really an int. */
+ temptype = lookup_fundamental_type (objfile, FT_INTEGER);
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
+ {
+ SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym))
+ ? lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER)
+ : temptype;
+ }
+ break;
+
+#endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
+
+ case 'P':
+ /* acc seems to use P to delare 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)
+ goto process_prototype_types;
+
+ /* Parameter which is in a register. */
+ SYMBOL_CLASS (sym) = LOC_REGPARM;
+ SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
+ if (SYMBOL_VALUE (sym) >= NUM_REGS)
+ {
+ complain (&reg_value_complaint, SYMBOL_NAME (sym));
+ SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
+ }
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &local_symbols);
+ break;
+
+#ifdef IBM6000_TARGET
+ case 'R':
+#endif
+ case 'r':
+ /* Register variable (either global or local). */
+ SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
+ if (SYMBOL_VALUE (sym) >= NUM_REGS)
+ {
+ complain (&reg_value_complaint, SYMBOL_NAME (sym));
+ SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
+ }
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ if (within_function)
+ 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_CLASS (sym) = LOC_STATIC;
+ SYMBOL_VALUE_ADDRESS (sym) = valu;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &file_symbols);
+ break;
+
+ case 't':
+ /* 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));
+ }
+
+ add_symbol_to_list (sym, &file_symbols);
+ break;
+
+ case 'T':
+ /* 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_NAME (SYMBOL_TYPE (sym)) == 0)
+ TYPE_NAME (SYMBOL_TYPE (sym))
+ = obconcat (&objfile -> type_obstack, "",
+ (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM
+ ? "enum "
+ : (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
+ ? "struct " : "union ")),
+ SYMBOL_NAME (sym));
+ add_symbol_to_list (sym, &file_symbols);
+
+ if (synonym)
+ {
+ register struct symbol *typedef_sym = (struct symbol *)
+ obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct symbol));
+ SYMBOL_NAME (typedef_sym) = SYMBOL_NAME (sym);
+ SYMBOL_TYPE (typedef_sym) = SYMBOL_TYPE (sym);
+
+ SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
+ SYMBOL_VALUE (typedef_sym) = valu;
+ SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
+ add_symbol_to_list (typedef_sym, &file_symbols);
+ }
+ break;
+
+ case 'V':
+ /* Static symbol of local scope */
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ SYMBOL_VALUE_ADDRESS (sym) = valu;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &local_symbols);
+ break;
+
+ case 'v':
+ /* Reference parameter */
+ SYMBOL_CLASS (sym) = LOC_REF_ARG;
+ SYMBOL_VALUE (sym) = valu;
+ 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_CLASS (sym) = LOC_LOCAL;
+ SYMBOL_VALUE (sym) = valu;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, &local_symbols);
+ break;
+
+ default:
+ error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum);
+ }
+ return sym;
+}
+
+
+/* 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);
+
+ 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);
+ ++*pp;
+
+ or
+
+ if (**pp != ';')
+ foo = error_type (pp);
+ 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. */
+
+struct type *
+error_type (pp)
+ char **pp;
+{
+ complain (&error_type_complaint, 0);
+ while (1)
+ {
+ /* Skip to end of symbol. */
+ while (**pp != '\0')
+ (*pp)++;
+
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if ((*pp)[-1] == '\\')
+ *pp = next_symbol_text ();
+ else
+ break;
+ }
+ return builtin_type_error;
+}
+
+
+/* Read a dbx type reference or definition;
+ return the type that is meant.
+ This can be just a number, in which case it references
+ a type already defined and placed in type_vector.
+ Or the number can be followed by an =, in which case
+ it means to define a new type according to the text that
+ follows the =. */
+
+struct type *
+read_type (pp, objfile)
+ register char **pp;
+ struct objfile *objfile;
+{
+ register struct type *type = 0;
+ struct type *type1;
+ int typenums[2];
+ int xtypenums[2];
+
+ /* 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 == '(')
+ {
+ read_type_number (pp, typenums);
+
+ /* 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. */
+#if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */
+ {
+ struct type *tt;
+
+ /* if such a type already exists, this is an unnecessary duplication
+ of the stab string, which is common in (RS/6000) xlc generated
+ objects. In that case, simply return NULL and let the caller take
+ care of it. */
+
+ tt = *dbx_lookup_type (typenums);
+ if (tt && tt->length && tt->code)
+ return NULL;
+ }
+#endif
+
+ *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 += 1;
+ }
+
+ switch ((*pp)[-1])
+ {
+ case 'x':
+ {
+ enum type_code code;
+
+ /* Used to index through file_symbols. */
+ struct pending *ppt;
+ int i;
+
+ /* Name including "struct", etc. */
+ char *type_name;
+
+ /* Name without "struct", etc. */
+ char *type_name_only;
+
+ {
+ char *prefix;
+ char *from, *to;
+
+ /* Set the type code according to the following letter. */
+ switch ((*pp)[0])
+ {
+ case 's':
+ code = TYPE_CODE_STRUCT;
+ prefix = "struct ";
+ break;
+ case 'u':
+ code = TYPE_CODE_UNION;
+ prefix = "union ";
+ break;
+ case 'e':
+ code = TYPE_CODE_ENUM;
+ prefix = "enum ";
+ break;
+ default:
+ return error_type (pp);
+ }
+
+ to = type_name = (char *)
+ obstack_alloc (&objfile -> type_obstack,
+ (strlen (prefix) +
+ ((char *) strchr (*pp, ':') - (*pp)) + 1));
+
+ /* Copy the prefix. */
+ from = prefix;
+ while (*to++ = *from++)
+ ;
+ to--;
+
+ type_name_only = to;
+
+ /* Copy the name. */
+ from = *pp + 1;
+ while ((*to++ = *from++) != ':')
+ ;
+ *--to = '\0';
+
+ /* Set the pointer ahead of the name which we just read. */
+ *pp = from;
+
+#if 0
+ /* The following hack is clearly wrong, because it doesn't
+ check whether we are in a baseclass. I tried to reproduce
+ the case that it is trying to fix, but I couldn't get
+ g++ to put out a cross reference to a basetype. Perhaps
+ it doesn't do it anymore. */
+ /* Note: for C++, the cross reference may be to a base type which
+ has not yet been seen. In this case, we skip to the comma,
+ which will mark the end of the base class name. (The ':'
+ at the end of the base class name will be skipped as well.)
+ But sometimes (ie. when the cross ref is the last thing on
+ the line) there will be no ','. */
+ from = (char *) strchr (*pp, ',');
+ if (from)
+ *pp = from;
+#endif /* 0 */
+ }
+
+ /* Now check to see whether the type has already been declared. */
+ /* This is necessary at least in the case where the
+ program says something like
+ struct foo bar[5];
+ The compiler puts out a cross-reference; we better find
+ set the length of the structure correctly so we can
+ set the length of the array. */
+ 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)
+ && !strcmp (SYMBOL_NAME (sym), type_name_only))
+ {
+ 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_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 */
+ (*pp)--;
+ type = builtin_type (pp); /* (in xcoffread.c) */
+ goto after_digits;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '(':
+ (*pp)--;
+ read_type_number (pp, xtypenums);
+ type = *dbx_lookup_type (xtypenums);
+ /* fall through */
+
+ after_digits:
+ if (type == 0)
+ type = lookup_fundamental_type (objfile, FT_VOID);
+ if (typenums[0] != -1)
+ *dbx_lookup_type (typenums) = type;
+ 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 */
+ type1 = read_type (pp, objfile);
+ type = make_function_type (type1, dbx_lookup_type (typenums));
+ break;
+
+ case 'k': /* Const qualifier on some type (Sun) */
+ type = read_type (pp, objfile);
+ /* FIXME! For now, we ignore const and volatile qualifiers. */
+ break;
+
+ case 'B': /* Volatile qual on some type (Sun) */
+ type = read_type (pp, objfile);
+ /* FIXME! For now, we ignore const and volatile qualifiers. */
+ break;
+
+/* FIXME -- we should be doing smash_to_XXX types here. */
+ case '@': /* Member (class & variable) type */
+ {
+ struct type *domain = read_type (pp, objfile);
+ struct type *memtype;
+
+ if (**pp != ',')
+ /* Invalid member type data format. */
+ return error_type (pp);
+ ++*pp;
+
+ memtype = read_type (pp, objfile);
+ type = dbx_alloc_type (typenums, objfile);
+ smash_to_member_type (type, domain, memtype);
+ }
+ break;
+
+ case '#': /* Method (class & fn) type */
+ if ((*pp)[0] == '#')
+ {
+ /* We'll get the parameter types from the name. */
+ struct type *return_type;
+
+ *pp += 1;
+ return_type = read_type (pp, objfile);
+ if (*(*pp)++ != ';')
+ complain (&invalid_member_complaint, (char *) 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)++ != ',')
+ error ("invalid member type data format, at symtab pos %d.",
+ symnum);
+
+ 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': /* 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);
+ *dbx_lookup_type (typenums) = type;
+ break;
+
+ case 's': /* Struct type */
+ type = dbx_alloc_type (typenums, objfile);
+ if (!TYPE_NAME (type))
+ TYPE_NAME (type) = type_synonym_name;
+ type_synonym_name = 0;
+ type = read_struct_type (pp, type, objfile);
+ break;
+
+ case 'u': /* Union type */
+ type = dbx_alloc_type (typenums, objfile);
+ if (!TYPE_NAME (type))
+ TYPE_NAME (type) = type_synonym_name;
+ type_synonym_name = 0;
+ type = read_struct_type (pp, type, objfile);
+ TYPE_CODE (type) = TYPE_CODE_UNION;
+ break;
+
+ case 'a': /* Array type */
+ if (**pp != 'r')
+ return error_type (pp);
+ ++*pp;
+
+ type = dbx_alloc_type (typenums, objfile);
+ type = read_array_type (pp, type, objfile);
+ break;
+
+ default:
+ --*pp; /* Go back to the symbol in error */
+ /* Particularly important if it was \0! */
+ return error_type (pp);
+ }
+
+ if (type == 0)
+ abort ();
+
+ return type;
+}
+
+/* This page contains subroutines of read_type. */
+
+/* Read the description of a structure (or union type)
+ and return an object describing the type. */
+
+static struct type *
+read_struct_type (pp, type, objfile)
+ char **pp;
+ register struct type *type;
+ struct objfile *objfile;
+{
+ /* Total number of methods defined in this class.
+ If the class defines two `f' methods, and one `g' method,
+ then this will have the value 3. */
+ int total_length = 0;
+
+ struct nextfield
+ {
+ struct nextfield *next;
+ int visibility; /* 0=public, 1=protected, 2=public */
+ struct field field;
+ };
+
+ struct next_fnfield
+ {
+ struct next_fnfield *next;
+ struct fn_field fn_field;
+ };
+
+ struct next_fnfieldlist
+ {
+ struct next_fnfieldlist *next;
+ struct fn_fieldlist fn_fieldlist;
+ };
+
+ register struct nextfield *list = 0;
+ struct nextfield *new;
+ register char *p;
+ int nfields = 0;
+ int non_public_fields = 0;
+ register int n;
+
+ register struct next_fnfieldlist *mainlist = 0;
+ int nfn_fields = 0;
+
+ TYPE_CODE (type) = TYPE_CODE_STRUCT;
+ INIT_CPLUS_SPECIFIC(type);
+ TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
+
+ /* First comes the total size in bytes. */
+
+ TYPE_LENGTH (type) = read_number (pp, 0);
+
+ /* C++: Now, if the class is a derived class, then the next character
+ will be a '!', followed by the number of base classes derived from.
+ Each element in the list contains visibility information,
+ the offset of this base class in the derived structure,
+ and then the base type. */
+ if (**pp == '!')
+ {
+ int i, n_baseclasses, offset;
+ struct type *baseclass;
+ int via_public;
+
+ /* Nonzero if it is a virtual baseclass, i.e.,
+
+ struct A{};
+ struct B{};
+ struct C : public B, public virtual A {};
+
+ B is a baseclass of C; A is a virtual baseclass for C. This is a C++
+ 2.0 language feature. */
+ int via_virtual;
+
+ *pp += 1;
+
+ ALLOCATE_CPLUS_STRUCT_TYPE(type);
+
+ n_baseclasses = read_number (pp, ',');
+ TYPE_FIELD_VIRTUAL_BITS (type) =
+ (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
+ B_BYTES (n_baseclasses));
+ B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), n_baseclasses);
+
+ for (i = 0; i < n_baseclasses; i++)
+ {
+ if (**pp == '\\')
+ *pp = next_symbol_text ();
+
+ switch (**pp)
+ {
+ case '0':
+ via_virtual = 0;
+ break;
+ case '1':
+ via_virtual = 1;
+ break;
+ default:
+ /* Bad visibility format. */
+ return error_type (pp);
+ }
+ ++*pp;
+
+ switch (**pp)
+ {
+ case '0':
+ via_public = 0;
+ non_public_fields++;
+ break;
+ case '2':
+ via_public = 2;
+ break;
+ default:
+ /* Bad visibility format. */
+ return error_type (pp);
+ }
+ if (via_virtual)
+ SET_TYPE_FIELD_VIRTUAL (type, i);
+ ++*pp;
+
+ /* Offset of the portion of the object corresponding to
+ this baseclass. Always zero in the absence of
+ multiple inheritance. */
+ offset = read_number (pp, ',');
+ baseclass = read_type (pp, objfile);
+ *pp += 1; /* skip trailing ';' */
+
+ /* Make this baseclass visible for structure-printing purposes. */
+ new = (struct nextfield *) alloca (sizeof (struct nextfield));
+ memset (new, 0, sizeof (struct nextfield));
+ new->next = list;
+ list = new;
+ list->visibility = via_public;
+ list->field.type = baseclass;
+ list->field.name = type_name_no_tag (baseclass);
+ list->field.bitpos = offset;
+ list->field.bitsize = 0; /* this should be an unpacked field! */
+ nfields++;
+ }
+ TYPE_N_BASECLASSES (type) = n_baseclasses;
+ }
+
+ /* Now come the fields, as NAME:?TYPENUM,BITPOS,BITSIZE; for each one.
+ 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 `?' is a placeholder for one of '/2' (public visibility),
+ '/1' (protected visibility), '/0' (private visibility), or nothing
+ (C style symbol table, public visibility). */
+
+ /* We better set p right now, in case there are no fields at all... */
+ p = *pp;
+
+ while (**pp != ';')
+ {
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if (**pp == '\\') *pp = next_symbol_text ();
+
+ /* Get space to record the next field's data. */
+ new = (struct nextfield *) alloca (sizeof (struct nextfield));
+ memset (new, 0, sizeof (struct nextfield));
+ new->next = list;
+ list = new;
+
+ /* Get the field name. */
+ p = *pp;
+ if (*p == CPLUS_MARKER)
+ {
+ /* Special GNU C++ name. */
+ if (*++p == 'v')
+ {
+ const char *prefix;
+ char *name = 0;
+ struct type *context;
+
+ switch (*++p)
+ {
+ case 'f':
+ prefix = vptr_name;
+ break;
+ case 'b':
+ prefix = vb_name;
+ break;
+ default:
+ complain (&invalid_cpp_abbrev_complaint, *pp);
+ prefix = "INVALID_C++_ABBREV";
+ break;
+ }
+ *pp = p + 1;
+ context = read_type (pp, objfile);
+ name = type_name_no_tag (context);
+ if (name == 0)
+ {
+ complain (&invalid_cpp_type_complaint, (char *) symnum);
+ name = "FOO";
+ }
+ list->field.name = obconcat (&objfile -> type_obstack,
+ prefix, name, "");
+ p = ++(*pp);
+ if (p[-1] != ':')
+ complain (&invalid_cpp_abbrev_complaint, *pp);
+ list->field.type = read_type (pp, objfile);
+ (*pp)++; /* Skip the comma. */
+ list->field.bitpos = read_number (pp, ';');
+ /* This field is unpacked. */
+ list->field.bitsize = 0;
+ list->visibility = 0; /* private */
+ non_public_fields++;
+ }
+ /* GNU C++ anonymous type. */
+ else if (*p == '_')
+ break;
+ else
+ complain (&invalid_cpp_abbrev_complaint, *pp);
+
+ nfields++;
+ continue;
+ }
+
+ while (*p != ':') p++;
+ list->field.name = obsavestring (*pp, p - *pp,
+ &objfile -> type_obstack);
+
+ /* C++: Check to see if we have hit the methods yet. */
+ if (p[1] == ':')
+ break;
+
+ *pp = p + 1;
+
+ /* This means we have a visibility for a field coming. */
+ if (**pp == '/')
+ {
+ switch (*++*pp)
+ {
+ case '0':
+ list->visibility = 0; /* private */
+ non_public_fields++;
+ *pp += 1;
+ break;
+
+ case '1':
+ list->visibility = 1; /* protected */
+ non_public_fields++;
+ *pp += 1;
+ break;
+
+ case '2':
+ list->visibility = 2; /* public */
+ *pp += 1;
+ break;
+ }
+ }
+ else /* normal dbx-style format. */
+ list->visibility = 2; /* public */
+
+ list->field.type = read_type (pp, objfile);
+ if (**pp == ':')
+ {
+ p = ++(*pp);
+#if 0
+ /* Possible future hook for nested types. */
+ if (**pp == '!')
+ {
+ list->field.bitpos = (long)-2; /* nested type */
+ p = ++(*pp);
+ }
+ else
+#endif
+ { /* Static class member. */
+ list->field.bitpos = (long)-1;
+ }
+ while (*p != ';') p++;
+ list->field.bitsize = (long) savestring (*pp, p - *pp);
+ *pp = p + 1;
+ nfields++;
+ continue;
+ }
+ else if (**pp != ',')
+ /* Bad structure-type format. */
+ return error_type (pp);
+
+ (*pp)++; /* Skip the comma. */
+ list->field.bitpos = read_number (pp, ',');
+ list->field.bitsize = read_number (pp, ';');
+
+#if 0
+ /* FIXME-tiemann: Can't the compiler put out something which
+ lets us distinguish these? (or maybe just not put out anything
+ for the field). What is the story here? What does the compiler
+ really do? Also, patch gdb.texinfo for this case; I document
+ it as a possible problem there. Search for "DBX-style". */
+
+ /* This is wrong because this is identical to the symbols
+ produced for GCC 0-size arrays. For example:
+ typedef union {
+ int num;
+ char str[0];
+ } foo;
+ The code which dumped core in such circumstances should be
+ fixed not to dump core. */
+
+ /* g++ -g0 can put out bitpos & bitsize zero for a static
+ field. This does not give us any way of getting its
+ class, so we can't know its name. But we can just
+ ignore the field so we don't dump core and other nasty
+ stuff. */
+ if (list->field.bitpos == 0
+ && list->field.bitsize == 0)
+ {
+ complain (&dbx_class_complaint, 0);
+ /* Ignore this field. */
+ list = list->next;
+ }
+ else
+#endif /* 0 */
+ {
+ /* 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. */
+ if (TYPE_CODE (list->field.type) != TYPE_CODE_INT
+ && TYPE_CODE (list->field.type) != TYPE_CODE_ENUM)
+ list->field.bitsize = 0;
+ if ((list->field.bitsize == 8 * TYPE_LENGTH (list->field.type)
+ || (TYPE_CODE (list->field.type) == TYPE_CODE_ENUM
+ && (list->field.bitsize
+ == 8 * TYPE_LENGTH (lookup_fundamental_type (objfile, FT_INTEGER)))
+ )
+ )
+ &&
+ list->field.bitpos % 8 == 0)
+ list->field.bitsize = 0;
+ nfields++;
+ }
+ }
+
+ if (p[1] == ':')
+ /* chill the list of fields: the last entry (at the head)
+ is a partially constructed entry which we now scrub. */
+ list = list->next;
+
+ /* Now 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. */
+
+ TYPE_NFIELDS (type) = nfields;
+ TYPE_FIELDS (type) = (struct field *)
+ obstack_alloc (&objfile -> type_obstack, sizeof (struct field) * nfields);
+
+ if (non_public_fields)
+ {
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+
+ TYPE_FIELD_PRIVATE_BITS (type) =
+ (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
+ B_BYTES (nfields));
+ B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
+
+ TYPE_FIELD_PROTECTED_BITS (type) =
+ (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
+ B_BYTES (nfields));
+ B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
+ }
+
+ /* Copy the saved-up fields into the field vector. */
+
+ for (n = nfields; list; list = list->next)
+ {
+ n -= 1;
+ TYPE_FIELD (type, n) = list->field;
+ if (list->visibility == 0)
+ SET_TYPE_FIELD_PRIVATE (type, n);
+ else if (list->visibility == 1)
+ SET_TYPE_FIELD_PROTECTED (type, n);
+ }
+
+ /* Now come the method fields, as NAME::methods
+ where each method is of the form TYPENUM,ARGS,...:PHYSNAME;
+ At the end, we see a semicolon instead of a field.
+
+ For the case of overloaded operators, the format is
+ op$::*.methods, where $ is the CPLUS_MARKER (usually '$'),
+ `*' holds the place for an operator name (such as `+=')
+ and `.' marks the end of the operator name. */
+ if (p[1] == ':')
+ {
+ /* Now, read in the methods. To simplify matters, we
+ "unread" the name that has been read, so that we can
+ start from the top. */
+
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+ /* For each list of method lists... */
+ do
+ {
+ int i;
+ struct next_fnfield *sublist = 0;
+ struct type *look_ahead_type = NULL;
+ int length = 0;
+ struct next_fnfieldlist *new_mainlist;
+ char *main_fn_name;
+
+ new_mainlist = (struct next_fnfieldlist *)
+ alloca (sizeof (struct next_fnfieldlist));
+ memset (new_mainlist, 0, sizeof (struct next_fnfieldlist));
+
+ p = *pp;
+
+ /* read in the name. */
+ while (*p != ':') p++;
+ if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER)
+ {
+ /* This is a completely wierd case. In order to stuff in the
+ names that might contain colons (the usual name delimiter),
+ Mike Tiemann defined a different name format which is
+ signalled if the identifier is "op$". 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;
+ if (**pp == '\\') *pp = next_symbol_text ();
+ 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_mainlist->fn_fieldlist.name = main_fn_name;
+
+ do
+ {
+ struct next_fnfield *new_sublist =
+ (struct next_fnfield *) alloca (sizeof (struct next_fnfield));
+ memset (new_sublist, 0, sizeof (struct next_fnfield));
+
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if (look_ahead_type == NULL) /* Normal case. */
+ {
+ if (**pp == '\\') *pp = next_symbol_text ();
+
+ new_sublist->fn_field.type = read_type (pp, objfile);
+ if (**pp != ':')
+ /* Invalid symtab info for method. */
+ return error_type (pp);
+ }
+ else
+ { /* g++ version 1 kludge */
+ new_sublist->fn_field.type = look_ahead_type;
+ look_ahead_type = NULL;
+ }
+
+ *pp += 1;
+ 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)
+ new_sublist->fn_field.is_stub = 1;
+ new_sublist->fn_field.physname = savestring (*pp, p - *pp);
+ *pp = p + 1;
+
+ /* Set this method's visibility fields. */
+ switch (*(*pp)++ - '0')
+ {
+ case 0:
+ new_sublist->fn_field.is_private = 1;
+ break;
+ case 1:
+ new_sublist->fn_field.is_protected = 1;
+ break;
+ }
+
+ if (**pp == '\\') *pp = next_symbol_text ();
+ 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, (char *) (long) **pp);
+ break;
+ }
+
+ switch (*(*pp)++)
+ {
+ case '*':
+ /* 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_number (pp, ';')) + 2;
+
+ if (**pp == '\\') *pp = next_symbol_text ();
+
+ 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 error_type (pp);
+ 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, (char *) (long) (*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++;
+ if (**pp == '\\') *pp = next_symbol_text ();
+ }
+ while (**pp != ';' && **pp != '\0');
+
+ *pp += 1;
+
+ new_mainlist->fn_fieldlist.fn_fields =
+ (struct fn_field *) obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct fn_field) * length);
+ for (i = length; (i--, sublist); sublist = sublist->next)
+ new_mainlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
+
+ new_mainlist->fn_fieldlist.length = length;
+ new_mainlist->next = mainlist;
+ mainlist = new_mainlist;
+ nfn_fields++;
+ total_length += length;
+ if (**pp == '\\') *pp = next_symbol_text ();
+ }
+ while (**pp != ';');
+ }
+
+ *pp += 1;
+
+
+ if (nfn_fields)
+ {
+ TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
+ obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct fn_fieldlist) * nfn_fields);
+ TYPE_NFN_FIELDS (type) = nfn_fields;
+ TYPE_NFN_FIELDS_TOTAL (type) = total_length;
+ }
+
+ {
+ int i;
+ for (i = 0; i < TYPE_N_BASECLASSES (type); ++i)
+ {
+ if (TYPE_CODE (TYPE_BASECLASS (type, i)) == TYPE_CODE_UNDEF)
+ /* @@ Memory leak on objfile->type_obstack? */
+ return error_type (pp);
+ TYPE_NFN_FIELDS_TOTAL (type) +=
+ TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, i));
+ }
+ }
+
+ for (n = nfn_fields; mainlist; mainlist = mainlist->next) {
+ --n; /* Circumvent Sun3 compiler bug */
+ TYPE_FN_FIELDLISTS (type)[n] = mainlist->fn_fieldlist;
+ }
+
+ if (**pp == '~')
+ {
+ *pp += 1;
+
+ if (**pp == '=' || **pp == '+' || **pp == '-')
+ {
+ /* Obsolete flags that used to indicate the presence
+ of constructors and/or destructors. */
+ *pp += 1;
+ }
+
+ /* Read either a '%' or the final ';'. */
+ if (*(*pp)++ == '%')
+ {
+ /* We'd like to be able to derive the vtable pointer field
+ from the type information, but when it's inherited, that's
+ hard. A reason it's hard is because we may read in the
+ info about a derived class before we read in info about
+ the base class that provides the vtable pointer field.
+ Once the base info has been read, we could fill in the info
+ for the derived classes, but for the fact that by then,
+ we don't remember who needs what. */
+
+#if 0
+ int predicted_fieldno = -1;
+#endif
+
+ /* Now we must record the virtual function table pointer's
+ field information. */
+
+ struct type *t;
+ int i;
+
+
+#if 0
+ {
+ /* In version 2, we derive the vfield ourselves. */
+ for (n = 0; n < nfields; n++)
+ {
+ if (! strncmp (TYPE_FIELD_NAME (type, n), vptr_name,
+ sizeof (vptr_name) -1))
+ {
+ predicted_fieldno = n;
+ break;
+ }
+ }
+ if (predicted_fieldno < 0)
+ for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
+ if (! TYPE_FIELD_VIRTUAL (type, n)
+ && TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n)) >= 0)
+ {
+ predicted_fieldno = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n));
+ break;
+ }
+ }
+#endif
+
+ t = read_type (pp, objfile);
+ p = (*pp)++;
+ while (*p != '\0' && *p != ';')
+ p++;
+ if (*p == '\0')
+ /* Premature end of symbol. */
+ return error_type (pp);
+
+ TYPE_VPTR_BASETYPE (type) = t;
+ if (type == t)
+ {
+ if (TYPE_FIELD_NAME (t, TYPE_N_BASECLASSES (t)) == 0)
+ {
+ /* FIXME-tiemann: what's this? */
+#if 0
+ TYPE_VPTR_FIELDNO (type) = i = TYPE_N_BASECLASSES (t);
+#else
+ error_type (pp);
+#endif
+ }
+ else 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;
+ break;
+ }
+ if (i < 0)
+ /* Virtual function table field not found. */
+ return error_type (pp);
+ }
+ else
+ TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
+
+#if 0
+ if (TYPE_VPTR_FIELDNO (type) != predicted_fieldno)
+ error ("TYPE_VPTR_FIELDNO miscalculated");
+#endif
+
+ *pp = p + 1;
+ }
+ }
+
+ return type;
+}
+
+/* Read a definition of an array type,
+ and create and return a suitable type object.
+ Also creates a range type which represents the bounds of that
+ array. */
+
+static struct type *
+read_array_type (pp, type, objfile)
+ register char **pp;
+ register struct type *type;
+ struct objfile *objfile;
+{
+ struct type *index_type, *element_type, *range_type;
+ int lower, upper;
+ int adjustable = 0;
+
+ /* Format of an array type:
+ "ar<index type>;lower;upper;<array_contents_type>". Put code in
+ to handle this.
+
+ Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
+ for these, produce a type like float[][]. */
+
+ index_type = read_type (pp, objfile);
+ if (**pp != ';')
+ /* Improper format of array type decl. */
+ return error_type (pp);
+ ++*pp;
+
+ if (!(**pp >= '0' && **pp <= '9'))
+ {
+ *pp += 1;
+ adjustable = 1;
+ }
+ lower = read_number (pp, ';');
+
+ if (!(**pp >= '0' && **pp <= '9'))
+ {
+ *pp += 1;
+ adjustable = 1;
+ }
+ upper = read_number (pp, ';');
+
+ element_type = read_type (pp, objfile);
+
+ if (adjustable)
+ {
+ lower = 0;
+ upper = -1;
+ }
+
+ {
+ /* Create range type. */
+ range_type = (struct type *)
+ obstack_alloc (&objfile -> type_obstack, sizeof (struct type));
+ memset (range_type, 0, sizeof (struct type));
+ TYPE_OBJFILE (range_type) = objfile;
+ TYPE_CODE (range_type) = TYPE_CODE_RANGE;
+ TYPE_TARGET_TYPE (range_type) = index_type;
+
+ /* This should never be needed. */
+ TYPE_LENGTH (range_type) = sizeof (int);
+
+ TYPE_NFIELDS (range_type) = 2;
+ TYPE_FIELDS (range_type) =
+ (struct field *) obstack_alloc (&objfile -> type_obstack,
+ 2 * sizeof (struct field));
+ TYPE_FIELD_BITPOS (range_type, 0) = lower;
+ TYPE_FIELD_BITPOS (range_type, 1) = upper;
+ }
+
+ TYPE_CODE (type) = TYPE_CODE_ARRAY;
+ TYPE_TARGET_TYPE (type) = element_type;
+ TYPE_LENGTH (type) = (upper - lower + 1) * TYPE_LENGTH (element_type);
+ TYPE_NFIELDS (type) = 1;
+ TYPE_FIELDS (type) =
+ (struct field *) obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct field));
+ TYPE_FIELD_TYPE (type, 0) = range_type;
+
+ /* If we have an array whose element type is not yet known, but whose
+ bounds *are* known, record it to be adjusted at the end of the file. */
+ if (TYPE_LENGTH (element_type) == 0 && !adjustable)
+ add_undefined_type (type);
+
+ return type;
+}
+
+
+/* Read a definition of an enumeration type,
+ and create and return a suitable type object.
+ Also defines the symbols that represent the values of the type. */
+
+static struct type *
+read_enum_type (pp, type, objfile)
+ register char **pp;
+ register struct type *type;
+ struct objfile *objfile;
+{
+ register char *p;
+ char *name;
+ register long n;
+ register struct symbol *sym;
+ int nsyms = 0;
+ struct pending **symlist;
+ struct pending *osyms, *syms;
+ int o_nsyms;
+
+#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;
+
+ /* 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 != ',')
+ {
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if (**pp == '\\') *pp = next_symbol_text ();
+
+ p = *pp;
+ while (*p != ':') p++;
+ name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack);
+ *pp = p + 1;
+ n = read_number (pp, ',');
+
+ sym = (struct symbol *) obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = name;
+ SYMBOL_CLASS (sym) = LOC_CONST;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_VALUE (sym) = n;
+ 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) = sizeof (int);
+ TYPE_CODE (type) = TYPE_CODE_ENUM;
+ TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
+ TYPE_NFIELDS (type) = nsyms;
+ TYPE_FIELDS (type) = (struct field *)
+ obstack_alloc (&objfile -> type_obstack,
+ 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 = 0; syms; syms = syms->next)
+ {
+ int j = 0;
+ if (syms == osyms)
+ j = o_nsyms;
+ for (; j < syms->nsyms; j++,n++)
+ {
+ struct symbol *xsym = syms->symbol[j];
+ SYMBOL_TYPE (xsym) = type;
+ TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym);
+ TYPE_FIELD_VALUE (type, n) = 0;
+ TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
+ TYPE_FIELD_BITSIZE (type, n) = 0;
+ }
+ if (syms == osyms)
+ break;
+ }
+
+#if 0
+ /* This screws up perfectly good C programs with enums. FIXME. */
+ /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
+ if(TYPE_NFIELDS(type) == 2 &&
+ ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") &&
+ !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) ||
+ (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") &&
+ !strcmp(TYPE_FIELD_NAME(type,0),"FALSE"))))
+ TYPE_CODE(type) = TYPE_CODE_BOOL;
+#endif
+
+ 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>; <offset>; <nbits>
+ signed = u or s. Possible c in addition to u or s (for char?).
+ offset = offset from high order bit to start bit of type.
+ width is # bytes in object of this type, nbits is # bits in type.
+
+ The width/offset stuff appears to be for small objects stored in
+ larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
+ FIXME. */
+
+static struct type *
+read_sun_builtin_type (pp, typenums, objfile)
+ char **pp;
+ int typenums[2];
+ struct objfile *objfile;
+{
+ int nbits;
+ int signed_type;
+
+ switch (**pp)
+ {
+ case 's':
+ signed_type = 1;
+ break;
+ case 'u':
+ signed_type = 0;
+ break;
+ default:
+ return error_type (pp);
+ }
+ (*pp)++;
+
+ /* For some odd reason, all forms of char put a c here. This is strange
+ because no other type has this honor. We can safely ignore this because
+ we actually determine 'char'acterness by the number of bits specified in
+ the descriptor. */
+
+ if (**pp == 'c')
+ (*pp)++;
+
+ /* The first number appears to be the number of bytes occupied
+ by this type, except that unsigned short is 4 instead of 2.
+ Since this information is redundant with the third number,
+ we will ignore it. */
+ read_number (pp, ';');
+
+ /* The second number is always 0, so ignore it too. */
+ read_number (pp, ';');
+
+ /* The third number is the number of bits for this type. */
+ nbits = read_number (pp, 0);
+
+ /* FIXME. Here we should just be able to make a type of the right
+ number of bits and signedness. FIXME. */
+
+ if (nbits == TARGET_LONG_LONG_BIT)
+ return (lookup_fundamental_type (objfile,
+ signed_type? FT_LONG_LONG: FT_UNSIGNED_LONG_LONG));
+
+ if (nbits == TARGET_INT_BIT)
+ {
+ /* FIXME -- the only way to distinguish `int' from `long'
+ is to look at its name! */
+ if (signed_type)
+ {
+ if (long_kludge_name && long_kludge_name[0] == 'l' /* long */)
+ return lookup_fundamental_type (objfile, FT_LONG);
+ else
+ return lookup_fundamental_type (objfile, FT_INTEGER);
+ }
+ else
+ {
+ if (long_kludge_name
+ && ((long_kludge_name[0] == 'u' /* unsigned */ &&
+ long_kludge_name[9] == 'l' /* long */)
+ || (long_kludge_name[0] == 'l' /* long unsigned */)))
+ return lookup_fundamental_type (objfile, FT_UNSIGNED_LONG);
+ else
+ return lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER);
+ }
+ }
+
+ if (nbits == TARGET_SHORT_BIT)
+ return (lookup_fundamental_type (objfile,
+ signed_type? FT_SHORT: FT_UNSIGNED_SHORT));
+
+ if (nbits == TARGET_CHAR_BIT)
+ return (lookup_fundamental_type (objfile,
+ signed_type? FT_CHAR: FT_UNSIGNED_CHAR));
+
+ if (nbits == 0)
+ return lookup_fundamental_type (objfile, FT_VOID);
+
+ return error_type (pp);
+}
+
+static struct type *
+read_sun_floating_type (pp, typenums, objfile)
+ char **pp;
+ int typenums[2];
+ struct objfile *objfile;
+{
+ int nbytes;
+
+ /* The first number has more details about the type, for example
+ FN_COMPLEX. See the sun stab.h. */
+ read_number (pp, ';');
+
+ /* The second number is the number of bytes occupied by this type */
+ nbytes = read_number (pp, ';');
+
+ if (**pp != 0)
+ return error_type (pp);
+
+ if (nbytes == TARGET_FLOAT_BIT / TARGET_CHAR_BIT)
+ return lookup_fundamental_type (objfile, FT_FLOAT);
+
+ if (nbytes == TARGET_DOUBLE_BIT / TARGET_CHAR_BIT)
+ return lookup_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
+
+ if (nbytes == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT)
+ return lookup_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
+
+ return error_type (pp);
+}
+
+/* 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 *VALUE and set *BITS to 0.
+ If not, set *BITS to be the number of bits in the number.
+
+ If encounter garbage, set *BITS to -1. */
+
+static void
+read_huge_number (pp, end, valu, bits)
+ char **pp;
+ int end;
+ long *valu;
+ 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++;
+ }
+
+ 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;
+ }
+ }
+ 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;
+ }
+
+ /* -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 (valu)
+ *valu = n * sign;
+ if (bits)
+ *bits = 0;
+ }
+}
+
+static struct type *
+read_range_type (pp, typenums, objfile)
+ char **pp;
+ int typenums[2];
+ struct objfile *objfile;
+{
+ int rangenums[2];
+ long n2, n3;
+ int n2bits, n3bits;
+ int self_subrange;
+ struct type *result_type;
+
+ /* First comes a type we are a subrange of.
+ In C it is usually 0, 1 or the type being defined. */
+ read_type_number (pp, rangenums);
+ self_subrange = (rangenums[0] == typenums[0] &&
+ rangenums[1] == typenums[1]);
+
+ /* 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. */
+ read_huge_number (pp, ';', &n2, &n2bits);
+ read_huge_number (pp, ';', &n3, &n3bits);
+
+ if (n2bits == -1 || n3bits == -1)
+ return error_type (pp);
+
+ /* 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;
+
+ /* 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. */
+ else if (n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
+ {
+ got_signed = 1;
+ nbits = n2bits;
+ }
+
+ /* Check for "long long". */
+ if (got_signed && nbits == TARGET_LONG_LONG_BIT)
+ return (lookup_fundamental_type (objfile, FT_LONG_LONG));
+ if (got_unsigned && nbits == TARGET_LONG_LONG_BIT)
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG));
+
+ if (got_signed || got_unsigned)
+ {
+ result_type = (struct type *)
+ obstack_alloc (&objfile -> type_obstack,
+ sizeof (struct type));
+ memset (result_type, 0, sizeof (struct type));
+ TYPE_OBJFILE (result_type) = objfile;
+ TYPE_LENGTH (result_type) = nbits / TARGET_CHAR_BIT;
+ TYPE_CODE (result_type) = TYPE_CODE_INT;
+ if (got_unsigned)
+ TYPE_FLAGS (result_type) |= TYPE_FLAG_UNSIGNED;
+ return result_type;
+ }
+ else
+ return error_type (pp);
+ }
+
+ /* A type defined as a subrange of itself, with bounds both 0, is void. */
+ if (self_subrange && n2 == 0 && n3 == 0)
+ return (lookup_fundamental_type (objfile, FT_VOID));
+
+ /* If n3 is zero and n2 is not, we want a floating type,
+ and n2 is the width in bytes.
+
+ Fortran programs appear to use this for complex types also,
+ and they give no way to distinguish between double and single-complex!
+ We don't have complex types, so we would lose on all fortran files!
+ So return type `double' for all of those. It won't work right
+ for the complex values, but at least it makes the file loadable.
+
+ FIXME, we may be able to distinguish these by their names. FIXME. */
+
+ if (n3 == 0 && n2 > 0)
+ {
+ if (n2 == sizeof (float))
+ return (lookup_fundamental_type (objfile, FT_FLOAT));
+ return (lookup_fundamental_type (objfile, FT_DBL_PREC_FLOAT));
+ }
+
+ /* If the upper bound is -1, it must really be an unsigned int. */
+
+ else if (n2 == 0 && n3 == -1)
+ {
+ /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
+ long' is to look at its name! */
+ if (
+ long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ &&
+ long_kludge_name[9] == 'l' /* long */)
+ || (long_kludge_name[0] == 'l' /* long unsigned */)))
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG));
+ else
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER));
+ }
+
+ /* 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 (lookup_fundamental_type (objfile, FT_CHAR));
+
+ /* Assumptions made here: Subrange of self is equivalent to subrange
+ of int. FIXME: Host and target type-sizes assumed the same. */
+ /* FIXME: This is the *only* place in GDB that depends on comparing
+ some type to a builtin type with ==. Fix it! */
+ else if (n2 == 0
+ && (self_subrange ||
+ *dbx_lookup_type (rangenums) == lookup_fundamental_type (objfile, FT_INTEGER)))
+ {
+ /* an unsigned type */
+#ifdef LONG_LONG
+ if (n3 == - sizeof (long long))
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG));
+#endif
+ /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
+ long' is to look at its name! */
+ if (n3 == (unsigned long)~0L &&
+ long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ &&
+ long_kludge_name[9] == 'l' /* long */)
+ || (long_kludge_name[0] == 'l' /* long unsigned */)))
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG));
+ if (n3 == (unsigned int)~0L)
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER));
+ if (n3 == (unsigned short)~0L)
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_SHORT));
+ if (n3 == (unsigned char)~0L)
+ return (lookup_fundamental_type (objfile, FT_UNSIGNED_CHAR));
+ }
+#ifdef LONG_LONG
+ else if (n3 == 0 && n2 == -sizeof (long long))
+ return (lookup_fundamental_type (objfile, FT_LONG_LONG));
+#endif
+ else if (n2 == -n3 -1)
+ {
+ /* a signed type */
+ /* FIXME -- the only way to distinguish `int' from `long' is to look
+ at its name! */
+ if ((n3 ==(long)(((unsigned long)1 << (8 * sizeof (long) - 1)) - 1)) &&
+ long_kludge_name && long_kludge_name[0] == 'l' /* long */)
+ return (lookup_fundamental_type (objfile, FT_LONG));
+ if (n3 == (long)(((unsigned long)1 << (8 * sizeof (int) - 1)) - 1))
+ return (lookup_fundamental_type (objfile, FT_INTEGER));
+ if (n3 == ( 1 << (8 * sizeof (short) - 1)) - 1)
+ return (lookup_fundamental_type (objfile, FT_SHORT));
+ if (n3 == ( 1 << (8 * sizeof (char) - 1)) - 1)
+ return (lookup_fundamental_type (objfile, FT_SIGNED_CHAR));
+ }
+
+ /* We have a real range type on our hands. Allocate space and
+ return a real pointer. */
+
+ /* At this point I don't have the faintest idea how to deal with
+ a self_subrange type; I'm going to assume that this is used
+ as an idiom, and that all of them are special cases. So . . . */
+ if (self_subrange)
+ return error_type (pp);
+
+ result_type = (struct type *)
+ obstack_alloc (&objfile -> type_obstack, sizeof (struct type));
+ memset (result_type, 0, sizeof (struct type));
+ TYPE_OBJFILE (result_type) = objfile;
+
+ TYPE_CODE (result_type) = TYPE_CODE_RANGE;
+
+ TYPE_TARGET_TYPE (result_type) = *dbx_lookup_type(rangenums);
+ if (TYPE_TARGET_TYPE (result_type) == 0) {
+ complain (&range_type_base_complaint, (char *) rangenums[1]);
+ TYPE_TARGET_TYPE (result_type) = lookup_fundamental_type (objfile, FT_INTEGER);
+ }
+
+ TYPE_NFIELDS (result_type) = 2;
+ TYPE_FIELDS (result_type) =
+ (struct field *) obstack_alloc (&objfile -> type_obstack,
+ 2 * sizeof (struct field));
+ memset (TYPE_FIELDS (result_type), 0, 2 * sizeof (struct field));
+ TYPE_FIELD_BITPOS (result_type, 0) = n2;
+ TYPE_FIELD_BITPOS (result_type, 1) = n3;
+
+ TYPE_LENGTH (result_type) = TYPE_LENGTH (TYPE_TARGET_TYPE (result_type));
+
+ return result_type;
+}
+
+/* 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. */
+
+long
+read_number (pp, end)
+ char **pp;
+ int end;
+{
+ register char *p = *pp;
+ register long n = 0;
+ register int c;
+ int sign = 1;
+
+ /* Handle an optional leading minus sign. */
+
+ if (*p == '-')
+ {
+ sign = -1;
+ p++;
+ }
+
+ /* Read the digits, as far as they go. */
+
+ while ((c = *p++) >= '0' && c <= '9')
+ {
+ n *= 10;
+ n += c - '0';
+ }
+ if (end)
+ {
+ if (c && c != end)
+ error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c, symnum);
+ }
+ else
+ --p;
+
+ *pp = p;
+ return n * sign;
+}
+
+/* Read in an argument list. This is a list of types, separated by commas
+ and terminated with END. Return the list of types read in, or (struct type
+ **)-1 if there is an error. */
+
+static struct type **
+read_args (pp, end, objfile)
+ char **pp;
+ int end;
+ struct objfile *objfile;
+{
+ /* FIXME! Remove this arbitrary limit! */
+ struct type *types[1024], **rval; /* allow for fns of 1023 parameters */
+ int n = 0;
+
+ while (**pp != end)
+ {
+ if (**pp != ',')
+ /* Invalid argument list: no ','. */
+ return (struct type **)-1;
+ *pp += 1;
+
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if (**pp == '\\')
+ *pp = next_symbol_text ();
+
+ types[n++] = read_type (pp, objfile);
+ }
+ *pp += 1; /* 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;
+}
+
+/* Add a common block's start address to the offset of each symbol
+ declared to be in it (by being between a BCOMM/ECOMM pair that uses
+ the common block name). */
+
+static void
+fix_common_block (sym, valu)
+ struct symbol *sym;
+ int valu;
+{
+ struct pending *next = (struct pending *) SYMBOL_NAMESPACE (sym);
+ for ( ; next; next = next->next)
+ {
+ register int j;
+ for (j = next->nsyms - 1; j >= 0; j--)
+ SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
+ }
+}
+
+
+
+/* What about types defined as forward references inside of a small lexical
+ scope? */
+/* Add a type to the list of undefined types to be checked through
+ once this file has been read in. */
+
+void
+add_undefined_type (type)
+ struct type *type;
+{
+ if (undef_types_length == undef_types_allocated)
+ {
+ undef_types_allocated *= 2;
+ undef_types = (struct type **)
+ xrealloc ((char *) undef_types,
+ undef_types_allocated * sizeof (struct type *));
+ }
+ undef_types[undef_types_length++] = type;
+}
+
+/* Go through each undefined type, see if it's still undefined, and fix it
+ up if possible. We have two kinds of undefined types:
+
+ TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
+ Fix: update array length using the element bounds
+ and the target type's length.
+ TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
+ yet defined at the time a pointer to it was made.
+ Fix: Do a full lookup on the struct/union tag. */
+void
+cleanup_undefined_types ()
+{
+ struct type **type;
+
+ for (type = undef_types; type < undef_types + undef_types_length; type++)
+ {
+ switch (TYPE_CODE (*type))
+ {
+
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_ENUM:
+ {
+ /* Check if it has been defined since. */
+ if (TYPE_FLAGS (*type) & TYPE_FLAG_STUB)
+ {
+ struct pending *ppt;
+ int i;
+ /* Name of the type, without "struct" or "union" */
+ char *typename = TYPE_NAME (*type);
+
+ if (!strncmp (typename, "struct ", 7))
+ typename += 7;
+ if (!strncmp (typename, "union ", 6))
+ typename += 6;
+ if (!strncmp (typename, "enum ", 5))
+ typename += 5;
+
+ 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))
+ && !strcmp (SYMBOL_NAME (sym), typename))
+ {
+ memcpy (*type, SYMBOL_TYPE (sym),
+ sizeof (struct type));
+ }
+ }
+ }
+ }
+ }
+ break;
+
+ case TYPE_CODE_ARRAY:
+ {
+ struct type *range_type;
+ int lower, upper;
+
+ if (TYPE_LENGTH (*type) != 0) /* Better be unknown */
+ goto badtype;
+ if (TYPE_NFIELDS (*type) != 1)
+ goto badtype;
+ range_type = TYPE_FIELD_TYPE (*type, 0);
+ if (TYPE_CODE (range_type) != TYPE_CODE_RANGE)
+ goto badtype;
+
+ /* Now recompute the length of the array type, based on its
+ number of elements and the target type's length. */
+ lower = TYPE_FIELD_BITPOS (range_type, 0);
+ upper = TYPE_FIELD_BITPOS (range_type, 1);
+ TYPE_LENGTH (*type) = (upper - lower + 1)
+ * TYPE_LENGTH (TYPE_TARGET_TYPE (*type));
+ }
+ break;
+
+ default:
+ badtype:
+ error ("GDB internal error. cleanup_undefined_types with bad type %d.", TYPE_CODE (*type));
+ break;
+ }
+ }
+ undef_types_length = 0;
+}
+
+/* Scan through all of the global symbols defined in the object file,
+ assigning values to the debugging symbols that need to be assigned
+ to. Get these symbols from the minimal symbol table. */
+
+void
+scan_file_globals (objfile)
+ struct objfile *objfile;
+{
+ int hash;
+ struct minimal_symbol *msymbol;
+ struct symbol *sym, *prev;
+
+ if (objfile->msymbols == 0) /* Beware the null file. */
+ return;
+
+ for (msymbol = objfile -> msymbols; msymbol -> name != NULL; msymbol++)
+ {
+ QUIT;
+
+ prev = NULL;
+
+ /* Get the hash index and check all the symbols
+ under that hash index. */
+
+ hash = hashname (msymbol -> name);
+
+ for (sym = global_sym_chain[hash]; sym;)
+ {
+ if (*(msymbol -> name) == SYMBOL_NAME (sym)[0]
+ && !strcmp(msymbol -> name + 1, SYMBOL_NAME (sym) + 1))
+ {
+ /* 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_CLASS (sym) == LOC_BLOCK)
+ {
+ fix_common_block (sym, msymbol -> address);
+ }
+ else
+ {
+ SYMBOL_VALUE_ADDRESS (sym) = msymbol -> address;
+ }
+
+ if (prev)
+ {
+ sym = SYMBOL_VALUE_CHAIN (prev);
+ }
+ else
+ {
+ sym = global_sym_chain[hash];
+ }
+ }
+ else
+ {
+ prev = sym;
+ sym = SYMBOL_VALUE_CHAIN (sym);
+ }
+ }
+ }
+}
+
+/* Initialize anything that needs initializing when starting to read
+ a fresh piece of a symbol file, e.g. reading in the stuff corresponding
+ to a psymtab. */
+
+void
+stabsread_init ()
+{
+}
+
+/* Initialize anything that needs initializing when a completely new
+ symbol file is specified (not just adding some symbols from another
+ file, e.g. a shared library). */
+
+void
+stabsread_new_init ()
+{
+ /* Empty the hash table of global syms looking for values. */
+ memset (global_sym_chain, 0, sizeof (global_sym_chain));
+}
+
+/* Initialize anything that needs initializing at the same time as
+ start_symtab() is called. */
+
+void start_stabs ()
+{
+ global_stabs = NULL; /* AIX COFF */
+ /* Leave FILENUM of 0 free for builtin types and this file's types. */
+ n_this_object_header_files = 1;
+ type_vector_length = 0;
+ type_vector = (struct type **) 0;
+}
+
+/* Call after end_symtab() */
+
+void end_stabs ()
+{
+ if (type_vector)
+ {
+ free ((char *) type_vector);
+ }
+ type_vector = 0;
+ type_vector_length = 0;
+ previous_stab_code = 0;
+}
+
+void
+finish_global_stabs (objfile)
+
+ struct objfile *objfile;
+{
+ if (global_stabs)
+ {
+ patch_block_stabs (global_symbols, global_stabs, objfile);
+ free ((PTR) global_stabs);
+ global_stabs = NULL;
+ }
+}
+
+/* Initializer for this module */
+
+void
+_initialize_stabsread ()
+{
+ undef_types_allocated = 20;
+ undef_types_length = 0;
+ undef_types = (struct type **)
+ xmalloc (undef_types_allocated * sizeof (struct type *));
+}