/* Support routines for decoding "stabs" debugging information format.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
Free Software Foundation, Inc.
This file is part of GDB.
#include "obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
-#include "symfile.h" /* Needed for "struct complaint" */
+#include "symfile.h"
#include "objfiles.h"
#include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
#include "buildsym.h"
+#include "complaints.h"
+#include "demangle.h"
+
+#include <ctype.h>
/* Ask stabsread.h to define the vars it normally declares `extern'. */
#define EXTERN /**/
#include "stabsread.h" /* Our own declarations */
#undef EXTERN
+/* The routines that read and process a complete stabs for a C struct or
+ C++ class pass lists of data member fields and lists of member function
+ fields in an instance of a field_info structure, as defined below.
+ This is part of some reorganization of low level C++ support and is
+ expected to eventually go away... (FIXME) */
+
+struct field_info
+{
+ struct nextfield
+ {
+ struct nextfield *next;
+
+ /* This is the raw visibility from the stab. It is not checked
+ for being one of the visibilities we recognize, so code which
+ examines this field better be able to deal. */
+ int visibility;
+
+ struct field field;
+ } *list;
+ struct next_fnfieldlist
+ {
+ struct next_fnfieldlist *next;
+ struct fn_fieldlist fn_fieldlist;
+ } *fnlist;
+};
+
static struct type *
dbx_alloc_type PARAMS ((int [2], struct objfile *));
-static void
-read_huge_number PARAMS ((char **, int, long *, int *));
+static long read_huge_number PARAMS ((char **, int, int *));
+
+static struct type *error_type PARAMS ((char **));
static void
patch_block_stabs PARAMS ((struct pending *, struct pending_stabs *,
static void
fix_common_block PARAMS ((struct symbol *, int));
+static int
+read_type_number PARAMS ((char **, int *));
+
static struct type *
read_range_type PARAMS ((char **, int [2], struct objfile *));
static struct type *
read_enum_type PARAMS ((char **, struct type *, struct objfile *));
+static struct type *
+rs6000_builtin_type PARAMS ((int));
+
+static int
+read_member_functions PARAMS ((struct field_info *, char **, struct type *,
+ struct objfile *));
+
+static int
+read_struct_fields PARAMS ((struct field_info *, char **, struct type *,
+ struct objfile *));
+
+static int
+read_baseclasses PARAMS ((struct field_info *, char **, struct type *,
+ struct objfile *));
+
+static int
+read_tilde_fields PARAMS ((struct field_info *, char **, struct type *,
+ struct objfile *));
+
+static int
+attach_fn_fields_to_type PARAMS ((struct field_info *, struct type *));
+
+static int
+attach_fields_to_type PARAMS ((struct field_info *, struct type *,
+ struct objfile *));
+
static struct type *
read_struct_type PARAMS ((char **, struct type *, struct objfile *));
static struct type **
read_args PARAMS ((char **, int, struct objfile *));
+static int
+read_cpp_abbrev PARAMS ((struct field_info *, char **, struct type *,
+ 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 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 reg_value_complaint =
{"register number too large in symbol %s", 0, 0};
+struct complaint vtbl_notfound_complaint =
+ {"virtual function table pointer not found when defining class `%s'", 0, 0};
+
+struct complaint unrecognized_cplus_name_complaint =
+ {"Unknown C++ symbol name `%s'", 0, 0};
+
+struct complaint rs6000_builtin_complaint =
+ {"Unknown builtin type %d", 0, 0};
+
+struct complaint stabs_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;
-\f
-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);
-}
+/* Check for and handle cretinous stabs symbol name continuation! */
+#define STABS_CONTINUE(pp) \
+ do { \
+ if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
+ *(pp) = next_symbol_text (); \
+ } while (0)
\f
/* Look up a dbx type-number pair. Return the address of the slot
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);
+ {
+ 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)
if (real_filenum >= n_header_files)
{
- abort ();
+ 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[real_filenum];
{
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)
{
-#ifndef IBM6000_TARGET
- printf ("ERROR! stab symbol not found!\n"); /* FIXME */
-#endif
+ /* 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) =
+ obstack_copy0 (&objfile->symbol_obstack, name, pp - name);
+ 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
{
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. */
+ TYPENUMS will then be used as an argument to dbx_lookup_type.
-void
+ Returns 0 for success, -1 for error. */
+
+static int
read_type_number (pp, typenums)
register char **pp;
register int *typenums;
{
+ int nbits;
if (**pp == '(')
{
(*pp)++;
- typenums[0] = read_number (pp, ',');
- typenums[1] = read_number (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_number (pp, 0);
+ typenums[1] = read_huge_number (pp, 0, &nbits);
+ if (nbits != 0) return -1;
}
+ return 0;
}
\f
static char *type_synonym_name;
+#if !defined (REG_STRUCT_HAS_ADDR)
+#define REG_STRUCT_HAS_ADDR(gcc_p) 0
+#endif
+
/* ARGSUSED */
struct symbol *
define_symbol (valu, string, desc, type, objfile)
- unsigned int valu;
+ CORE_ADDR valu;
char *string;
int desc;
int type;
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
+ 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;
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" */
- nameless = (p == string);
+ e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
+ nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));
sym = (struct symbol *)
obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol));
goto normal;
default:
- abort ();
+ complain (&unrecognized_cplus_name_complaint, string);
+ goto normal; /* Do *something* with it */
}
}
else
{
normal:
+ SYMBOL_LANGUAGE (sym) = current_subfile -> language;
SYMBOL_NAME (sym) = (char *)
obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1));
- /* Open-coded bcopy--saves function call time. */
+ /* 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);
}
*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++;
- /* 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')
+ switch (deftype)
{
- if (*p++ != '=')
- error ("Invalid symbol data at symtab pos %d.", symnum);
+ 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);
+ 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, sizeof (double));
- memcpy (dbl_valu, &d, sizeof (double));
- SWAP_TARGET_AND_HOST (dbl_valu, sizeof (double));
+ 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':
{
- SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
- FT_INTEGER);
+ /* 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 an enum constant symbol.
+ /* 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,;"). */
{
- 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;
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
+
+ if (*p != ',')
+ {
+ SYMBOL_TYPE (sym) = error_type (&p);
+ 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:
- error ("Invalid symbol data at symtab pos %d.", symnum);
+ {
+ SYMBOL_CLASS (sym) = LOC_CONST;
+ SYMBOL_TYPE (sym) = error_type (&p);
+ }
}
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)));
- }
- 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_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_LABEL;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_VALUE_ADDRESS (sym) = valu;
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);
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);
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);
i = hashname (SYMBOL_NAME (sym));
SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
global_sym_chain[i] = sym;
when there is no code letter in the dbx data.
Dbx data never actually contains 'l'. */
case 'l':
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_LOCAL;
SYMBOL_VALUE (sym) = valu;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
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;
#endif
add_symbol_to_list (sym, &local_symbols);
+#if TARGET_BYTE_ORDER == LITTLE_ENDIAN
+ /* On little-endian machines, this crud is never necessary, and,
+ if the extra bytes contain garbage, is harmful. */
+ break;
+#else /* Big endian. */
/* 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;
+#if !BELIEVE_PCC_PROMOTION
+ {
+ /* This is the signed type which arguments get promoted to. */
+ static struct type *pcc_promotion_type;
+ /* This is the unsigned type which arguments get promoted to. */
+ static struct type *pcc_unsigned_promotion_type;
+
+ /* Call it "int" because this is mainly C lossage. */
+ if (pcc_promotion_type == NULL)
+ pcc_promotion_type =
+ init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ 0, "int", NULL);
+
+ if (pcc_unsigned_promotion_type == NULL)
+ pcc_unsigned_promotion_type =
+ init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
+#if defined(BELIEVE_PCC_PROMOTION_TYPE)
+ /* This macro is defined on machines (e.g. sparc) where
+ we should believe the type of a PCC 'short' argument,
+ but shouldn't believe the address (the address is
+ the address of the corresponding int).
+
+ My guess is that this correction, as opposed to changing
+ the parameter to an 'int' (as done below, for PCC
+ on most machines), is the right thing to do
+ on all machines, but I don't want to risk breaking
+ something that already works. On most PCC machines,
+ the sparc problem doesn't come up because the calling
+ function has to zero the top bytes (not knowing whether
+ the called function wants an int or a short), so there
+ is little practical difference between an int and a short
+ (except perhaps what happens when the GDB user types
+ "print short_arg = 0x10000;").
+
+ Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
+ actually produces the correct address (we don't need to fix it
+ up). I made this code adapt so that it will offset the symbol
+ if it was pointing at an int-aligned location and not
+ otherwise. This way you can use the same gdb for 4.0.x and
+ 4.1 systems.
+
+ If the parameter is shorter than an int, and is integral
+ (e.g. char, short, or unsigned equivalent), and is claimed to
+ be passed on an integer boundary, don't believe it! Offset the
+ parameter's address to the tail-end of that integer. */
+
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
+ && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type))
+ {
+ SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type)
+ - TYPE_LENGTH (SYMBOL_TYPE (sym));
+ }
+ break;
+
#else /* no BELIEVE_PCC_PROMOTION_TYPE. */
- /* If PCC says a parameter is a short or a char,
- it is really an int. */
- 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;
+ /* If PCC says a parameter is a short or a char,
+ it is really an int. */
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
+ {
+ SYMBOL_TYPE (sym) =
+ TYPE_UNSIGNED (SYMBOL_TYPE (sym))
+ ? pcc_unsigned_promotion_type
+ : pcc_promotion_type;
+ }
+ break;
#endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
+ }
+#endif /* !BELIEVE_PCC_PROMOTION. */
+#endif /* Big endian. */
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;
+ {
+ read_type (&p, objfile);
+ goto process_prototype_types;
+ }
+ /*FALLTHROUGH*/
+ case 'R':
/* Parameter which is in a register. */
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_REGPARM;
SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
if (SYMBOL_VALUE (sym) >= NUM_REGS)
{
- complain (®_value_complaint, SYMBOL_NAME (sym));
+ complain (®_value_complaint, 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':
case 'r':
/* Register variable (either global or local). */
+ SYMBOL_TYPE (sym) = read_type (&p, objfile);
SYMBOL_CLASS (sym) = LOC_REGISTER;
SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
if (SYMBOL_VALUE (sym) >= NUM_REGS)
{
- complain (®_value_complaint, SYMBOL_NAME (sym));
+ complain (®_value_complaint, SYMBOL_SOURCE_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);
+ {
+ /* 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.
+
+ But we only do this in the REG_STRUCT_HAS_ADDR case, 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
+ && REG_STRUCT_HAS_ADDR (processing_gcc_compilation)
+ && (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
+ || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION))
+ {
+ struct symbol *prev_sym;
+ prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
+ if (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;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
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_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. */
+ 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_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)
+ {
+ if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
+ || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
+ {
+ /* If we are giving a name to a type such as "pointer to
+ foo" or "function returning foo", we better not set
+ the TYPE_NAME. If the program contains "typedef char
+ *caddr_t;", we don't want all variables of type char
+ * to print as caddr_t. This is not just a
+ consequence of GDB's type management; PCC and GCC (at
+ least through version 2.4) both output variables of
+ either type char * or caddr_t with the type number
+ defined in the 't' symbol for caddr_t. If a future
+ compiler cleans this up it GDB is not ready for it
+ yet, but if it becomes ready we somehow need to
+ disable this check (without breaking the PCC/GCC2.4
+ case).
+
+ Sigh.
+
+ Fortunately, this check seems not to be necessary
+ for anything except pointers or functions. */
+ }
+ else
+ TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym);
+ }
add_symbol_to_list (sym, &file_symbols);
break;
case 'T':
+ /* Struct, union, or enum tag. For GNU C++, this can be be followed
+ by 't' which means we are typedef'ing it as well. */
+ synonym = *p == 't';
+
+ if (synonym)
+ {
+ p++;
+ type_synonym_name = obsavestring (SYMBOL_NAME (sym),
+ strlen (SYMBOL_NAME (sym)),
+ &objfile -> symbol_obstack);
+ }
+ /* 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;
+ type_synonym_name = obsavestring (SYMBOL_NAME (sym),
+ strlen (SYMBOL_NAME (sym)),
+ &objfile -> symbol_obstack);
+ }
+
+ 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_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));
+ 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));
- memset (typedef_sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (typedef_sym) = SYMBOL_NAME (sym);
- SYMBOL_TYPE (typedef_sym) = SYMBOL_TYPE (sym);
-
+ *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;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
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;
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;
break;
default:
- error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum);
+ SYMBOL_TYPE (sym) = error_type (&p);
+ 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 yields non-zero we have to convert LOC_REGPARM
+ to LOC_REGPARM_ADDR for structures and unions. */
+
+ if (SYMBOL_CLASS (sym) == LOC_REGPARM
+ && REG_STRUCT_HAS_ADDR (processing_gcc_compilation)
+ && ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
+ || (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)))
+ SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
+
return sym;
}
can define new types and new syntaxes, and old versions of the
debugger will be able to read the new symbol tables. */
-struct type *
+static struct type *
error_type (pp)
char **pp;
{
- complain (&error_type_complaint, 0);
+ complain (&error_type_complaint);
while (1)
{
/* Skip to end of symbol. */
while (**pp != '\0')
- (*pp)++;
+ {
+ (*pp)++;
+ }
/* Check for and handle cretinous dbx symbol name continuation! */
- if ((*pp)[-1] == '\\')
- *pp = next_symbol_text ();
+ if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
+ {
+ *pp = next_symbol_text ();
+ }
else
- break;
+ {
+ break;
+ }
}
- return builtin_type_error;
+ return (builtin_type_error);
}
\f
-/* 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 =. */
+/* Read type information or a type definition; return the type. Even
+ though this routine accepts either type information or a type
+ definition, the distinction is relevant--some parts of stabsread.c
+ assume that type information starts with a digit, '-', or '(' in
+ deciding whether to call read_type. */
struct type *
read_type (pp, objfile)
struct type *type1;
int typenums[2];
int xtypenums[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 == '('
+ || **pp == '-')
{
- read_type_number (pp, typenums);
+ if (read_type_number (pp, typenums) != 0)
+ return error_type (pp);
/* Type is not being defined here. Either it already exists,
or this is a forward reference to it. dbx_alloc_type handles
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;
+ /* Skip the '='. */
+ ++(*pp);
+
+ while (**pp == '@')
+ {
+ char *p = *pp + 1;
+ /* It might be a type attribute or a member type. */
+ if (isdigit (*p) || *p == '(' || *p == '-')
+ /* Member type. */
+ break;
+ else
+ {
+ /* Type attributes. */
+ char *attr = p;
+
+ /* Skip to the semicolon. */
+ while (*p != ';' && *p != '\0')
+ ++p;
+ *pp = p;
+ if (*p == '\0')
+ return error_type (pp);
+ else
+ /* Skip the semicolon. */
+ ++*pp;
- /* 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. */
+ switch (*attr)
+ {
+ case 's':
+ type_size = atoi (attr + 1);
+ if (type_size <= 0)
+ type_size = -1;
+ break;
- tt = *dbx_lookup_type (typenums);
- if (tt && tt->length && tt->code)
- return NULL;
- }
-#endif
+ case 'S':
+ is_string = 1;
+ break;
- *pp += 2;
+ default:
+ /* Ignore unrecognized type attributes, so future compilers
+ can invent new ones. */
+ break;
+ }
+ }
+ }
+ /* Skip the type descriptor, we get it below with (*pp)[-1]. */
+ ++(*pp);
}
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;
+ (*pp)++;
}
- switch ((*pp)[-1])
+ type_descriptor = (*pp)[-1];
+ switch (type_descriptor)
{
case 'x':
{
/* Name including "struct", etc. */
char *type_name;
- /* Name without "struct", etc. */
- char *type_name_only;
-
{
- char *prefix;
- char *from, *to;
+ char *from, *to, *p, *q1, *q2;
/* 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);
+ {
+ /* 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;
+ }
}
-
- 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--;
+
+ q1 = strchr(*pp, '<');
+ p = strchr(*pp, ':');
+ if (p == NULL)
+ return error_type (pp);
+ while (q1 && p > q1 && p[1] == ':')
+ {
+ q2 = strchr(q1, '>');
+ if (!q2 || q2 < p)
+ break;
+ p += 2;
+ p = strchr(p, ':');
+ if (p == NULL)
+ return error_type (pp);
+ }
+ to = type_name =
+ (char *)obstack_alloc (&objfile->type_obstack, p - *pp + 1);
- type_name_only = to;
-
/* Copy the name. */
from = *pp + 1;
- while ((*to++ = *from++) != ':')
- ;
- *--to = '\0';
+ while (from < p)
+ *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 */
+ /* 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 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. */
+ /* 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++)
{
if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
&& SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
&& (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
- && !strcmp (SYMBOL_NAME (sym), type_name_only))
+ && 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
type. */
type = dbx_alloc_type (typenums, objfile);
TYPE_CODE (type) = code;
- TYPE_NAME (type) = type_name;
+ TYPE_TAG_NAME (type) = type_name;
INIT_CPLUS_SPECIFIC(type);
TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
}
case '-': /* RS/6000 built-in type */
- (*pp)--;
- type = builtin_type (pp); /* (in xcoffread.c) */
- goto after_digits;
-
case '0':
case '1':
case '2':
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
+ {
+ char *pp_saved;
+
+ (*pp)--;
+ pp_saved = *pp;
+
+ /* Peek ahead at the number to detect void. */
+ if (read_type_number (pp, xtypenums) != 0)
+ return error_type (pp);
+
+ if (typenums[0] == xtypenums[0] && typenums[1] == xtypenums[1])
+ /* It's being defined as itself. That means it is "void". */
+ type = init_type (TYPE_CODE_VOID, 0, 0, NULL, objfile);
+ else
+ {
+ struct type *xtype;
+
+ /* Go back to the number and have read_type get it. This means
+ that we can deal with something like t(1,2)=(3,4)=... which
+ the Lucid compiler uses. */
+ *pp = pp_saved;
+ xtype = read_type (pp, objfile);
+
+ /* The type is being defined to another type. So we copy the type.
+ This loses if we copy a C++ class and so we lose track of how
+ the names are mangled (but g++ doesn't output stabs like this
+ now anyway). */
+
+ type = alloc_type (objfile);
+ memcpy (type, xtype, sizeof (struct type));
+
+ /* The idea behind clearing the names is that the only purpose
+ for defining a type to another type is so that the name of
+ one can be different. So we probably don't need to worry much
+ about the case where the compiler doesn't give a name to the
+ new type. */
+ TYPE_NAME (type) = NULL;
+ TYPE_TAG_NAME (type) = NULL;
+ }
+ 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
case '#': /* Method (class & fn) type */
if ((*pp)[0] == '#')
{
- /* This "minimized" format bogus, because it doesn't yield
- enough information. I've changed gcc to not emit it. --Per */
+ /* We'll get the parameter types from the name. */
struct type *return_type;
- *pp += 1;
+ (*pp)++;
return_type = read_type (pp, objfile);
if (*(*pp)++ != ';')
- complain (&invalid_member_complaint, (char *) symnum);
+ complain (&invalid_member_complaint, symnum);
type = allocate_stub_method (return_type);
if (typenums[0] != -1)
*dbx_lookup_type (typenums) = type;
struct type *return_type;
struct type **args;
- if (*(*pp)++ != ',')
- error ("invalid member type data format, at symtab pos %d.",
- symnum);
+ if (**pp != ',')
+ /* Invalid member type data format. */
+ return error_type (pp);
+ else
+ ++(*pp);
return_type = read_type (pp, objfile);
args = read_args (pp, ';', objfile);
case 'e': /* Enumeration type */
type = dbx_alloc_type (typenums, objfile);
type = read_enum_type (pp, type, objfile);
- *dbx_lookup_type (typenums) = type;
+ if (typenums[0] != -1)
+ *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_NAME (type) = type_synonym_name;
+ }
+ type_synonym_name = NULL;
+ 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);
- TYPE_CODE (type) = TYPE_CODE_UNION;
break;
case 'a': /* Array type */
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:
}
if (type == 0)
- abort ();
+ {
+ warning ("GDB internal error, type is NULL in stabsread.c\n");
+ return error_type (pp);
+ }
+
+ /* Size specified in a type attribute overrides any other size. */
+ if (type_size != -1)
+ TYPE_LENGTH (type) = type_size / TARGET_CHAR_BIT;
return type;
}
\f
-/* This page contains subroutines of read_type. */
-
-/* Read the description of a structure (or union type)
- and return an object describing the 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 *
-read_struct_type (pp, type, objfile)
- char **pp;
- register struct type *type;
- struct objfile *objfile;
+rs6000_builtin_type (typenum)
+ int typenum;
{
- /* 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;
+ /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
+#define NUMBER_RECOGNIZED 30
+ /* This includes an empty slot for type number -0. */
+ static struct type *negative_types[NUMBER_RECOGNIZED + 1];
+ struct type *rettype = NULL;
- struct nextfield
- {
- struct nextfield *next;
- int visibility; /* 0=public, 1=protected, 2=public */
- struct field field;
- };
-
- struct next_fnfield
+ if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
{
- struct next_fnfield *next;
- struct fn_field fn_field;
- };
+ 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
- struct next_fnfieldlist
+ switch (-typenum)
{
- 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;
+ 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, 0, 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, 0, "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_ERROR, 8, 0, "complex", NULL);
+ break;
+ case 26:
+ /* Complex type consisting of two IEEE double precision values. */
+ rettype = init_type (TYPE_CODE_ERROR, 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;
+ }
+ negative_types[-typenum] = rettype;
+ return rettype;
+}
+\f
+/* This page contains subroutines of read_type. */
- /* First comes the total size in bytes. */
+#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 */
- TYPE_LENGTH (type) = read_number (pp, 0);
+/* Read member function stabs info for C++ classes. The form of each member
+ function data is:
- /* 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;
+ NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
- /* Nonzero if it is a virtual baseclass, i.e.,
+ An example with two member functions is:
- struct A{};
- struct B{};
- struct C : public B, public virtual A {};
+ afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
- B is a baseclass of C; A is a virtual baseclass for C. This is a C++
- 2.0 language feature. */
- int via_virtual;
+ 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.
- *pp += 1;
+ Returns 1 for success, 0 for failure. */
- ALLOCATE_CPLUS_STRUCT_TYPE(type);
+static int
+read_member_functions (fip, pp, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ int nfn_fields = 0;
+ int length = 0;
+ /* Total number of member functions defined in this class. If the class
+ defines two `f' functions, and one `g' function, then this will have
+ the value 3. */
+ int total_length = 0;
+ int i;
+ struct next_fnfield
+ {
+ struct next_fnfield *next;
+ struct fn_field fn_field;
+ } *sublist;
+ struct type *look_ahead_type;
+ struct next_fnfieldlist *new_fnlist;
+ struct next_fnfield *new_sublist;
+ char *main_fn_name;
+ register char *p;
+
+ /* Process each list until we find something that is not a member function
+ or find the end of the functions. */
- n_baseclasses = read_number (pp, ',');
- TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
- TYPE_ALLOC (type, B_BYTES (n_baseclasses));
- B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), n_baseclasses);
+ 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;
+ }
- for (i = 0; i < n_baseclasses; i++)
+ sublist = NULL;
+ look_ahead_type = NULL;
+ length = 0;
+
+ new_fnlist = (struct next_fnfieldlist *)
+ xmalloc (sizeof (struct next_fnfieldlist));
+ make_cleanup (free, new_fnlist);
+ memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
+
+ if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER)
{
- if (**pp == '\\')
- *pp = next_symbol_text ();
+ /* 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;
- switch (**pp)
+ STABS_CONTINUE (pp);
+ p = *pp;
+ while (*p != '.')
{
- case '0':
- via_virtual = 0;
- break;
- case '1':
- via_virtual = 1;
- break;
- default:
- /* Bad visibility format. */
- return error_type (pp);
+ *o++ = *p++;
+ }
+ main_fn_name = savestring (opname, o - opname);
+ /* Skip past '.' */
+ *pp = p + 1;
+ }
+ else
+ {
+ main_fn_name = savestring (*pp, p - *pp);
+ /* Skip past '::'. */
+ *pp = p + 2;
+ }
+ new_fnlist -> fn_fieldlist.name = main_fn_name;
+
+ do
+ {
+ new_sublist =
+ (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
+ make_cleanup (free, new_sublist);
+ memset (new_sublist, 0, sizeof (struct next_fnfield));
+
+ /* Check for and handle cretinous dbx symbol name continuation! */
+ if (look_ahead_type == NULL)
+ {
+ /* Normal case. */
+ STABS_CONTINUE (pp);
+
+ 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++;
}
- ++*pp;
+
+ /* 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);
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);
+ 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;
}
- 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++;
+
+ 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);
+ 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);
+ }
+ 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;
}
- TYPE_N_BASECLASSES (type) = n_baseclasses;
+
+ new_fnlist -> fn_fieldlist.length = length;
+ new_fnlist -> next = fip -> fnlist;
+ fip -> fnlist = new_fnlist;
+ nfn_fields++;
+ total_length += length;
+ STABS_CONTINUE (pp);
}
- /* Now come the fields, as NAME:?TYPENUM,BITPOS,BITSIZE; for each one.
- At the end, we see a semicolon instead of a field.
+ 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;
+ }
- In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
- a static field.
+ return 1;
+}
- The `?' is a placeholder for one of '/2' (public visibility),
- '/1' (protected visibility), '/0' (private visibility), or nothing
- (C style symbol table, public visibility). */
+/* Special GNU C++ name.
- /* We better set p right now, in case there are no fields at all... */
- p = *pp;
+ Returns 1 for success, 0 for failure. "failure" means that we can't
+ keep parsing and it's time for error_type(). */
- while (**pp != ';')
+static int
+read_cpp_abbrev (fip, pp, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ register char *p;
+ char *name;
+ char cpp_abbrev;
+ struct type *context;
+
+ p = *pp;
+ if (*++p == 'v')
{
- /* Check for and handle cretinous dbx symbol name continuation! */
- if (**pp == '\\') *pp = next_symbol_text ();
+ name = NULL;
+ cpp_abbrev = *++p;
- /* 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;
+ *pp = p + 1;
- /* Get the field name. */
- p = *pp;
- if (*p == CPLUS_MARKER)
+ /* 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)
{
- if (*p == '_') /* GNU C++ anonymous type. */
- ;
- /* Special GNU C++ name. */
- else if (*++p == 'v')
- {
- const char *prefix;
- char *name = 0;
- struct type *context;
+ case 'f': /* $vf -- a virtual function table pointer */
+ fip->list->field.name =
+ obconcat (&objfile->type_obstack, vptr_name, "", "");
+ break;
- 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++;
-
- nfields++;
- continue;
- }
- else
+ 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;
}
- 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;
+ /* At this point, *pp points to the ':'. Skip it and read the
+ field type. */
- /* This means we have a visibility for a field coming. */
- if (**pp == '/')
+ p = ++(*pp);
+ if (p[-1] != ':')
{
- switch (*++*pp)
- {
- case '0':
- list->visibility = 0; /* private */
- non_public_fields++;
- *pp += 1;
- break;
+ 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;
- 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 (**pp == '!')
- { /* C++ nested type -as in FOO::BAR */
- list->field.bitpos = (long)(-2); /* nested type */
- p = ++(*pp);
- if (TYPE_NAME (list->field.type) == NULL && **pp == '\'')
- {
- for (p = ++(*pp); *p != '\''; ) p++;
- TYPE_NAME (list->field.type) = savestring (*pp, p - *pp);
- }
- while (*p != ';') p++;
- list->field.bitsize = 0;
- *pp = p + 1;
- }
- else
- { /* 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);
+ {
+ int nbits;
+ fip->list->field.bitpos = read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return 0;
+ }
+ /* This field is unpacked. */
+ fip->list->field.bitsize = 0;
+ fip->list->visibility = VISIBILITY_PRIVATE;
+ }
+ else
+ {
+ complain (&invalid_cpp_abbrev_complaint, *pp);
+ /* We have no idea what syntax an unrecognized abbrev would have, so
+ better return 0. If we returned 1, we would need to at least advance
+ *pp to avoid an infinite loop. */
+ return 0;
+ }
+ return 1;
+}
+
+static void
+read_one_struct_field (fip, pp, p, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ char *p;
+ struct type *type;
+ struct objfile *objfile;
+{
+ fip -> list -> field.name =
+ obsavestring (*pp, p - *pp, &objfile -> type_obstack);
+ *pp = p + 1;
- (*pp)++; /* Skip the comma. */
- list->field.bitpos = read_number (pp, ',');
- list->field.bitsize = read_number (pp, ';');
+ /* 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
- /* 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)
+ /* Possible future hook for nested types. */
+ if (**pp == '!')
{
- complain (&dbx_class_complaint, 0);
- /* Ignore this field. */
- list = list->next;
+ fip -> list -> field.bitpos = (long)-2; /* nested type */
+ p = ++(*pp);
}
else
-#endif /* 0 */
+#endif
+ {
+ /* Static class member. */
+ fip -> list -> field.bitpos = (long) -1;
+ }
+ while (*p != ';')
{
- /* 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)))
- )
+ p++;
+ }
+ fip -> list -> field.bitsize = (long) 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;
+ fip -> list -> field.bitpos = read_huge_number (pp, ',', &nbits);
+ if (nbits != 0)
+ {
+ complain (&stabs_general_complaint, "bad structure-type format");
+ return;
+ }
+ fip -> list -> field.bitsize = read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ {
+ complain (&stabs_general_complaint, "bad structure-type format");
+ return;
+ }
+ }
+
+ if (fip -> list -> field.bitpos == 0 && fip -> list -> field.bitsize == 0)
+ {
+ /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
+ it is a field which has been optimized out. The correct stab for
+ this case is to use VISIBILITY_IGNORE, but that is a recent
+ invention. (2) It is a 0-size array. For example
+ union { int num; char str[0]; } foo. Printing "<no value>" for
+ str in "p foo" is OK, since foo.str (and thus foo.str[3])
+ will continue to work, and a 0-size array as a whole doesn't
+ have any contents to print.
+
+ I suspect this probably could also happen with gcc -gstabs (not
+ -gstabs+) for static fields, and perhaps other C++ extensions.
+ Hopefully few people use -gstabs with gdb, since it is intended
+ for dbx compatibility. */
+
+ /* 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. */
+
+ if (TYPE_CODE (fip -> list -> field.type) != TYPE_CODE_INT
+ && TYPE_CODE (fip -> list -> field.type) != TYPE_CODE_ENUM)
+ {
+ fip -> list -> field.bitsize = 0;
+ }
+ if ((fip -> list -> field.bitsize
+ == TARGET_CHAR_BIT * TYPE_LENGTH (fip -> list -> field.type)
+ || (TYPE_CODE (fip -> list -> field.type) == TYPE_CODE_ENUM
+ && (fip -> list -> field.bitsize
+ == TARGET_INT_BIT)
)
- &&
- list->field.bitpos % 8 == 0)
- list->field.bitsize = 0;
- nfields++;
+ )
+ &&
+ fip -> list -> field.bitpos % 8 == 0)
+ {
+ fip -> list -> field.bitsize = 0;
}
}
+}
- 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. */
+/* Read struct or class data fields. They have the form:
- 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);
+ NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
- if (non_public_fields)
+ At the end, we see a semicolon instead of a field.
+
+ In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
+ a static field.
+
+ The optional VISIBILITY is one of:
+
+ '/0' (VISIBILITY_PRIVATE)
+ '/1' (VISIBILITY_PROTECTED)
+ '/2' (VISIBILITY_PUBLIC)
+ '/9' (VISIBILITY_IGNORE)
+
+ or nothing, for C style fields with public visibility.
+
+ Returns 1 for success, 0 for failure. */
+
+static int
+read_struct_fields (fip, pp, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ register char *p;
+ struct nextfield *new;
+
+ /* We better set p right now, in case there are no fields at all... */
+
+ p = *pp;
+
+ /* Read each data member type until we find the terminating ';' at the end of
+ the data member list, or break for some other reason such as finding the
+ start of the member function list. */
+
+ while (**pp != ';')
{
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
+ STABS_CONTINUE (pp);
+ /* Get space to record the next field's data. */
+ new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
+ make_cleanup (free, new);
+ memset (new, 0, sizeof (struct nextfield));
+ new -> next = fip -> list;
+ fip -> list = new;
- TYPE_FIELD_PRIVATE_BITS (type) = (B_TYPE *)
- TYPE_ALLOC (type, B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
+ /* Get the field name. */
+ p = *pp;
- TYPE_FIELD_PROTECTED_BITS (type) = (B_TYPE *)
- TYPE_ALLOC (type, B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
- }
+ /* 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. We accept either '$'
+ or '.', because a field name can never contain one of these
+ characters except as a CPLUS_MARKER (we probably should be
+ doing that in most parts of GDB). */
- /* Copy the saved-up fields into the field vector. */
+ if ((*p == '$' || *p == '.') && p[1] != '_')
+ {
+ if (!read_cpp_abbrev (fip, pp, type, objfile))
+ return 0;
+ continue;
+ }
- for (n = nfields; list; list = list->next)
+ /* 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] == ':')
{
- 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);
+ /* 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;
+}
- /* 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.
+/* The stabs for C++ derived classes contain baseclass information which
+ is marked by a '!' character after the total size. This function is
+ called when we encounter the baseclass marker, and slurps up all the
+ baseclass information.
+
+ Immediately following the '!' marker is the number of base classes that
+ the class is derived from, followed by information for each base class.
+ For each base class, there are two visibility specifiers, a bit offset
+ to the base class information within the derived class, a reference to
+ the type for the base class, and a terminating semicolon.
+
+ A typical example, with two base classes, would be "!2,020,19;0264,21;".
+ ^^ ^ ^ ^ ^ ^ ^
+ Baseclass information marker __________________|| | | | | | |
+ Number of baseclasses __________________________| | | | | | |
+ Visibility specifiers (2) ________________________| | | | | |
+ Offset in bits from start of class _________________| | | | |
+ Type number for base class ___________________________| | | |
+ Visibility specifiers (2) _______________________________| | |
+ Offset in bits from start of class ________________________| |
+ Type number of base class ____________________________________|
+
+ Return 1 for success, 0 for (error-type-inducing) failure. */
+
+static int
+read_baseclasses (fip, pp, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ int i;
+ struct nextfield *new;
- For the case of overloaded operators, the format is
- op$::*.methods, where $ is the CPLUS_MARKER (usually '$'),
- `*' holds the place for an operator name (such as `+=')
- and `.' marks the end of the operator name. */
- if (p[1] == ':')
+ if (**pp != '!')
{
- /* Now, read in the methods. To simplify matters, we
- "unread" the name that has been read, so that we can
- start from the top. */
+ return 1;
+ }
+ else
+ {
+ /* Skip the '!' baseclass information marker. */
+ (*pp)++;
+ }
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
- /* For each list of method lists... */
- do
- {
- int i;
- struct next_fnfield *sublist = 0;
- struct type *look_ahead_type = NULL;
- int length = 0;
- struct next_fnfieldlist *new_mainlist;
- char *main_fn_name;
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+ {
+ int nbits;
+ TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits);
+ if (nbits != 0)
+ return 0;
+ }
- new_mainlist = (struct next_fnfieldlist *)
- alloca (sizeof (struct next_fnfieldlist));
- memset (new_mainlist, 0, sizeof (struct next_fnfieldlist));
+#if 0
+ /* Some stupid compilers have trouble with the following, so break
+ it up into simpler expressions. */
+ TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
+ TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
+#else
+ {
+ int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
+ char *pointer;
- p = *pp;
+ pointer = (char *) TYPE_ALLOC (type, num_bytes);
+ TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
+ }
+#endif /* 0 */
- /* read in the name. */
- while (*p != ':') p++;
- if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER)
- {
- /* This is a completely wierd case. In order to stuff in the
- names that might contain colons (the usual name delimiter),
- Mike Tiemann defined a different name format which is
- signalled if the identifier is "op$". 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
+ B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
+
+ for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
+ {
+ new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
+ make_cleanup (free, new);
+ memset (new, 0, sizeof (struct nextfield));
+ new -> next = fip -> list;
+ fip -> list = new;
+ new -> field.bitsize = 0; /* this should be an unpacked field! */
+
+ STABS_CONTINUE (pp);
+ 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. */
{
- main_fn_name = savestring (*pp, p - *pp);
- /* Skip past '::'. */
- *pp = p + 2;
+ static struct complaint msg = {
+ "Unknown virtual character `%c' for baseclass", 0, 0};
+ complain (&msg, **pp);
}
- new_mainlist->fn_fieldlist.name = main_fn_name;
+ }
+ ++(*pp);
- do
+ 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. */
{
- 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;
- }
+ static struct complaint msg = {
+ "Unknown visibility `%c' for baseclass", 0, 0};
+ complain (&msg, new -> visibility);
+ new -> visibility = VISIBILITY_PUBLIC;
+ }
+ }
- 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;
- }
+ {
+ 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. */
- 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;
+ new -> field.bitpos = read_huge_number (pp, ',', &nbits);
+ if (nbits != 0)
+ return 0;
+ }
- 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;
+ /* 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. */
- 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 -> field.type = read_type (pp, objfile);
+ new -> field.name = type_name_no_tag (new -> field.type);
- 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);
- memset (new_mainlist->fn_fieldlist.fn_fields, 0,
- 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 != ';');
+ /* skip trailing ';' and bump count of number of fields seen */
+ if (**pp == ';')
+ (*pp)++;
+ else
+ return 0;
}
+ return 1;
+}
- *pp += 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. */
- if (nfn_fields)
- {
- 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;
- }
+static int
+read_tilde_fields (fip, pp, type, objfile)
+ struct field_info *fip;
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ register char *p;
- {
- 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));
- }
- }
+ STABS_CONTINUE (pp);
- for (n = nfn_fields; mainlist; mainlist = mainlist->next) {
- --n; /* Circumvent Sun3 compiler bug */
- TYPE_FN_FIELDLISTS (type)[n] = mainlist->fn_fieldlist;
- }
+ /* If we are positioned at a ';', then skip it. */
+ if (**pp == ';')
+ {
+ (*pp)++;
+ }
if (**pp == '~')
{
- *pp += 1;
+ (*pp)++;
if (**pp == '=' || **pp == '+' || **pp == '-')
{
/* Obsolete flags that used to indicate the presence
of constructors and/or destructors. */
- *pp += 1;
+ (*pp)++;
}
/* 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. */
+ /* 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;
-
-#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++;
+ {
+ p++;
+ }
if (*p == '\0')
- /* Premature end of symbol. */
- return error_type (pp);
+ {
+ /* Premature end of symbol. */
+ return 0;
+ }
TYPE_VPTR_BASETYPE (type) = t;
- if (type == t)
+ if (type == t) /* Our own class provides vtbl ptr */
{
- if (TYPE_FIELD_NAME (t, TYPE_N_BASECLASSES (t)) == 0)
+ for (i = TYPE_NFIELDS (t) - 1;
+ i >= TYPE_N_BASECLASSES (t);
+ --i)
{
- /* FIXME-tiemann: what's this? */
-#if 0
- TYPE_VPTR_FIELDNO (type) = i = TYPE_N_BASECLASSES (t);
-#else
- error_type (pp);
-#endif
+ if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name,
+ sizeof (vptr_name) - 1))
+ {
+ TYPE_VPTR_FIELDNO (type) = i;
+ goto gotit;
+ }
}
- 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);
+ /* Virtual function table field not found. */
+ complain (&vtbl_notfound_complaint, TYPE_NAME (type));
+ return 0;
}
else
- TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
-
-#if 0
- if (TYPE_VPTR_FIELDNO (type) != predicted_fieldno)
- error ("TYPE_VPTR_FIELDNO miscalculated");
-#endif
+ {
+ TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
+ }
+ gotit:
*pp = p + 1;
}
}
+ return 1;
+}
- return type;
+static int
+attach_fn_fields_to_type (fip, type)
+ struct field_info *fip;
+ register struct type *type;
+{
+ register int n;
+
+ for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
+ {
+ if (TYPE_CODE (TYPE_BASECLASS (type, n)) == TYPE_CODE_UNDEF)
+ {
+ /* @@ Memory leak on objfile -> type_obstack? */
+ return 0;
+ }
+ TYPE_NFN_FIELDS_TOTAL (type) +=
+ TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, 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;
+}
+
+/* Create the vector of fields, and record how big it is.
+ We need this info to record proper virtual function table information
+ for this class's virtual functions. */
+
+static int
+attach_fields_to_type (fip, type, objfile)
+ struct field_info *fip;
+ register struct type *type;
+ struct objfile *objfile;
+{
+ register int nfields = 0;
+ register int non_public_fields = 0;
+ register struct nextfield *scan;
+
+ /* Count up the number of fields that we have, as well as taking note of
+ whether or not there are any non-public fields, which requires us to
+ allocate and build the private_field_bits and protected_field_bits
+ bitfields. */
+
+ for (scan = fip -> list; scan != NULL; scan = scan -> next)
+ {
+ nfields++;
+ if (scan -> visibility != VISIBILITY_PUBLIC)
+ {
+ non_public_fields++;
+ }
+ }
+
+ /* Now we know how many fields there are, and whether or not there are any
+ non-public fields. Record the field count, allocate space for the
+ array of fields, and create blank visibility bitfields if necessary. */
+
+ TYPE_NFIELDS (type) = nfields;
+ TYPE_FIELDS (type) = (struct field *)
+ TYPE_ALLOC (type, sizeof (struct field) * nfields);
+ memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
+
+ if (non_public_fields)
+ {
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+
+ TYPE_FIELD_PRIVATE_BITS (type) =
+ (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
+ B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
+
+ TYPE_FIELD_PROTECTED_BITS (type) =
+ (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
+ B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
+
+ TYPE_FIELD_IGNORE_BITS (type) =
+ (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
+ B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
+ }
+
+ /* Copy the saved-up fields into the field vector. Start from the head
+ of the list, adding to the tail of the field array, so that they end
+ up in the same order in the array in which they were added to the list. */
+
+ while (nfields-- > 0)
+ {
+ TYPE_FIELD (type, nfields) = fip -> list -> field;
+ switch (fip -> list -> visibility)
+ {
+ case VISIBILITY_PRIVATE:
+ SET_TYPE_FIELD_PRIVATE (type, nfields);
+ break;
+
+ case VISIBILITY_PROTECTED:
+ SET_TYPE_FIELD_PROTECTED (type, nfields);
+ break;
+
+ case VISIBILITY_IGNORE:
+ SET_TYPE_FIELD_IGNORE (type, nfields);
+ break;
+
+ case VISIBILITY_PUBLIC:
+ break;
+
+ default:
+ /* Unknown visibility. Complain and treat it as public. */
+ {
+ static struct complaint msg = {
+ "Unknown visibility `%c' for field", 0, 0};
+ complain (&msg, fip -> list -> visibility);
+ }
+ break;
+ }
+ fip -> list = fip -> list -> next;
+ }
+ return 1;
+}
+
+/* Read the description of a structure (or union type) and return an object
+ describing the type.
+
+ PP points to a character pointer that points to the next unconsumed token
+ in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
+ *PP will point to "4a:1,0,32;;".
+
+ TYPE points to an incomplete type that needs to be filled in.
+
+ OBJFILE points to the current objfile from which the stabs information is
+ being read. (Note that it is redundant in that TYPE also contains a pointer
+ to this same objfile, so it might be a good idea to eliminate it. FIXME).
+ */
+
+static struct type *
+read_struct_type (pp, type, objfile)
+ char **pp;
+ struct type *type;
+ struct objfile *objfile;
+{
+ struct cleanup *back_to;
+ struct field_info fi;
+
+ fi.list = NULL;
+ fi.fnlist = NULL;
+
+ back_to = make_cleanup (null_cleanup, 0);
+
+ INIT_CPLUS_SPECIFIC (type);
+ TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
+
+ /* First comes the total size in bytes. */
+
+ {
+ int nbits;
+ TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits);
+ if (nbits != 0)
+ return error_type (pp);
+ }
+
+ /* 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))
+ {
+ do_cleanups (back_to);
+ return (error_type (pp));
+ }
+
+ do_cleanups (back_to);
+ return (type);
}
/* Read a definition of an array type,
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>". Put code in
return error_type (pp);
++*pp;
- if (!(**pp >= '0' && **pp <= '9'))
+ if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
{
- *pp += 1;
+ (*pp)++;
adjustable = 1;
}
- lower = read_number (pp, ';');
+ lower = read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return error_type (pp);
- if (!(**pp >= '0' && **pp <= '9'))
+ if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
{
- *pp += 1;
+ (*pp)++;
adjustable = 1;
}
- upper = read_number (pp, ';');
+ upper = read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return error_type (pp);
element_type = read_type (pp, objfile);
upper = -1;
}
- {
- /* Create range type. */
- range_type = alloc_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 *)
- TYPE_ALLOC (range_type, 2 * sizeof (struct field));
- memset (TYPE_FIELDS (range_type), 0, 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 *)
- TYPE_ALLOC (type, sizeof (struct field));
- memset (TYPE_FIELDS (type), 0, sizeof (struct field));
- TYPE_FIELD_TYPE (type, 0) = range_type;
+ range_type =
+ create_range_type ((struct type *) NULL, index_type, lower, upper);
+ type = create_array_type (type, element_type, 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. */
+ /* FIXME: Why check for zero length rather than TYPE_FLAG_STUB? I think
+ the two have the same effect except that the latter is cleaner and the
+ former would be wrong for types which really are zero-length (if we
+ have any). */
+
if (TYPE_LENGTH (element_type) == 0 && !adjustable)
- add_undefined_type (type);
+ {
+ TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
+ add_undefined_type (type);
+ }
return type;
}
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 ();
-
+ int nbits;
+ STABS_CONTINUE (pp);
p = *pp;
while (*p != ':') p++;
name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack);
*pp = p + 1;
- n = read_number (pp, ',');
+ n = read_huge_number (pp, ',', &nbits);
+ if (nbits != 0)
+ return error_type (pp);
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;
/* Now fill in the fields of the type-structure. */
- TYPE_LENGTH (type) = sizeof (int);
+ TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT;
TYPE_CODE (type) = TYPE_CODE_ENUM;
TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
TYPE_NFIELDS (type) = nsyms;
/* 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"))))
+ ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) ||
+ (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,0),"FALSE"))))
TYPE_CODE(type) = TYPE_CODE_BOOL;
#endif
int typenums[2];
struct objfile *objfile;
{
+ int type_bits;
int nbits;
int signed_type;
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, ';');
+ read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return error_type (pp);
/* The second number is always 0, so ignore it too. */
- read_number (pp, ';');
+ read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return error_type (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. */
+ type_bits = read_huge_number (pp, 0, &nbits);
+ if (nbits != 0)
+ return error_type (pp);
- 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);
+ return init_type (type_bits == 0 ? TYPE_CODE_VOID : TYPE_CODE_INT,
+ type_bits / TARGET_CHAR_BIT,
+ signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *)NULL,
+ objfile);
}
static struct type *
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. See the sun stab.h. */
- read_number (pp, ';');
+ FN_COMPLEX. */
+ details = read_huge_number (pp, ';', &nbits);
+ if (nbits != 0)
+ return error_type (pp);
/* The second number is the number of bytes occupied by this type */
- nbytes = read_number (pp, ';');
-
- if (**pp != 0)
+ nbytes = read_huge_number (pp, ';', &nbits);
+ if (nbits != 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 (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_ERROR, nbytes, 0, NULL, objfile);
- if (nbytes == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT)
- return lookup_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
-
- return error_type (pp);
+ return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
}
/* Read a number from the string pointed to by *PP.
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 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. */
+ If encounter garbage, set *BITS to -1 and return 0. */
-static void
-read_huge_number (pp, end, valu, bits)
+static long
+read_huge_number (pp, end, bits)
char **pp;
int end;
- long *valu;
int *bits;
{
char *p = *pp;
}
upper_limit = LONG_MAX / radix;
- while ((c = *p++) >= '0' && c <= ('0' + radix))
+ while ((c = *p++) >= '0' && c < ('0' + radix))
{
if (n <= upper_limit)
{
{
if (bits != NULL)
*bits = -1;
- return;
+ return 0;
}
}
else
count how many bits are in them). */
if (bits != NULL)
*bits = -1;
- return;
+ return 0;
}
/* -0x7f is the same as 0x80. So deal with it by adding one to
}
else
{
- if (valu)
- *valu = n * sign;
if (bits)
*bits = 0;
+ return n * sign;
}
+ /* It's *BITS which has the interesting information. */
+ return 0;
}
static struct type *
int n2bits, n3bits;
int self_subrange;
struct type *result_type;
+ struct type *index_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);
+ /* FIXME: according to stabs.texinfo and AIX doc, this can be a type-id
+ not just a type number. */
+ if (read_type_number (pp, rangenums) != 0)
+ return error_type (pp);
self_subrange = (rangenums[0] == typenums[0] &&
rangenums[1] == typenums[1]);
/* 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);
+ n2 = read_huge_number (pp, ';', &n2bits);
+ n3 = read_huge_number (pp, ';', &n3bits);
if (n2bits == -1 || n3bits == -1)
return error_type (pp);
char got_signed = 0;
char got_unsigned = 0;
/* Number of bits in the type. */
- int nbits;
+ int nbits = 0;
/* Range from 0 to <large number> is an unsigned large integral type. */
if ((n2bits == 0 && n2 == 0) && n3bits != 0)
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)
+ 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;
}
- /* 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 = alloc_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;
+ return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT,
+ got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL,
+ objfile);
}
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));
+ return init_type (TYPE_CODE_VOID, 0, 0, NULL, objfile);
/* 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. */
+ GDB does not have complex types.
+
+ Just return the complex as a float of that size. It won't work right
+ for the complex values, but at least it makes the file loadable. */
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));
+ return init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
}
/* If the upper bound is -1, it must really be an unsigned int. */
else if (n2 == 0 && n3 == -1)
{
- /* 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));
+ /* 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 (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
+ return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
+
+ /* We used to do this only for subrange of self or subrange of int. */
+ else if (n2 == 0)
+ {
+ if (n3 < 0)
+ /* n3 actually gives the size. */
+ return init_type (TYPE_CODE_INT, - n3, TYPE_FLAG_UNSIGNED,
+ NULL, objfile);
+ if (n3 == 0xff)
+ return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, NULL, objfile);
+ if (n3 == 0xffff)
+ return init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, NULL, objfile);
+
+ /* -1 is used for the upper bound of (4 byte) "unsigned int" and
+ "unsigned long", and we already checked for that,
+ so don't need to test for it here. */
+ }
+ /* I think this is for Convex "long long". Since I don't know whether
+ Convex sets self_subrange, I also accept that particular size regardless
+ of self_subrange. */
+ else if (n3 == 0 && n2 < 0
+ && (self_subrange
+ || n2 == - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT))
+ return init_type (TYPE_CODE_INT, - n2, 0, NULL, objfile);
else if (n2 == -n3 -1)
{
- /* 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));
+ 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
if (self_subrange)
return error_type (pp);
- result_type = alloc_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 *)
- TYPE_ALLOC (result_type, 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 == '-')
+ index_type = *dbx_lookup_type (rangenums);
+ if (index_type == NULL)
{
- sign = -1;
- p++;
- }
+ /* Does this actually ever happen? Is that why we are worrying
+ about dealing with it rather than just calling error_type? */
- /* Read the digits, as far as they go. */
+ static struct type *range_type_index;
- 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);
+ 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;
}
- else
- --p;
- *pp = p;
- return n * sign;
+ 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
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 ();
-
+ (*pp)++;
+ STABS_CONTINUE (pp);
types[n++] = read_type (pp, objfile);
}
- *pp += 1; /* get past `end' (the ':' character) */
+ (*pp)++; /* get past `end' (the ':' character) */
if (n == 1)
{
memcpy (rval, types, n * sizeof (struct type *));
return rval;
}
+\f
+/* Common block handling. */
+
+/* List of symbols declared since the last BCOMM. This list is a tail
+ of local_symbols. When ECOMM is seen, the symbols on the list
+ are noted so their proper addresses can be filled in later,
+ using the common block base address gotten from the assembler
+ stabs. */
+
+static struct pending *common_block;
+static int common_block_i;
+
+/* Name of the current common block. We get it from the BCOMM instead of the
+ ECOMM to match IBM documentation (even though IBM puts the name both places
+ like everyone else). */
+static char *common_block_name;
+
+/* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
+ to remain after this function returns. */
+
+void
+common_block_start (name, objfile)
+ char *name;
+ struct objfile *objfile;
+{
+ if (common_block_name != NULL)
+ {
+ static struct complaint msg = {
+ "Invalid symbol data: common block within common block",
+ 0, 0};
+ complain (&msg);
+ }
+ common_block = local_symbols;
+ common_block_i = local_symbols ? local_symbols->nsyms : 0;
+ common_block_name = obsavestring (name, strlen (name),
+ &objfile -> symbol_obstack);
+}
+
+/* Process a N_ECOMM symbol. */
+
+void
+common_block_end (objfile)
+ struct objfile *objfile;
+{
+ /* Symbols declared since the BCOMM are to have the common block
+ start address added in when we know it. common_block and
+ common_block_i point to the first symbol after the BCOMM in
+ the local_symbols list; copy the list and hang it off the
+ symbol for the common block name for later fixup. */
+ int i;
+ struct symbol *sym;
+ struct pending *new = 0;
+ struct pending *next;
+ int j;
+
+ if (common_block_name == NULL)
+ {
+ static struct complaint msg = {"ECOMM symbol unmatched by BCOMM", 0, 0};
+ complain (&msg);
+ return;
+ }
+
+ sym = (struct symbol *)
+ obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+ 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_NAMESPACE (sym) = (enum namespace)((long) 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
case TYPE_CODE_UNION:
case TYPE_CODE_ENUM:
{
- /* Check if it has been defined since. */
+ /* Check if it has been defined since. Need to do this here
+ as well as in check_stub_type 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_NAME (*type);
-
- if (!strncmp (typename, "struct ", 7))
- typename += 7;
- if (!strncmp (typename, "union ", 6))
- typename += 6;
- if (!strncmp (typename, "enum ", 5))
- typename += 5;
+ 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++)
&& SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
&& (TYPE_CODE (SYMBOL_TYPE (sym)) ==
TYPE_CODE (*type))
- && !strcmp (SYMBOL_NAME (sym), typename))
+ && STREQ (SYMBOL_NAME (sym), typename))
{
memcpy (*type, SYMBOL_TYPE (sym),
sizeof (struct type));
}
break;
- case TYPE_CODE_ARRAY:
+ case TYPE_CODE_ARRAY:
{
+ /* This is a kludge which is here for historical reasons
+ because I suspect that check_stub_type does not get
+ called everywhere it needs to be called for arrays. Even
+ with this kludge, those places are broken for the case
+ where the stub type is defined in another compilation
+ unit, but this kludge at least deals with it for the case
+ in which it is the same compilation unit.
+
+ Don't try to do this by calling check_stub_type; it might
+ cause symbols to be read in lookup_symbol, and the symbol
+ reader is not reentrant. */
+
struct type *range_type;
int lower, upper;
upper = TYPE_FIELD_BITPOS (range_type, 1);
TYPE_LENGTH (*type) = (upper - lower + 1)
* TYPE_LENGTH (TYPE_TARGET_TYPE (*type));
+
+ /* If the target type is not a stub, we could be clearing
+ TYPE_FLAG_TARGET_STUB for *type. */
}
break;
- default:
- badtype:
- error ("GDB internal error. cleanup_undefined_types with bad type %d.", TYPE_CODE (*type));
+ default:
+ badtype:
+ {
+ 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;
}
if (objfile->msymbols == 0) /* Beware the null file. */
return;
- for (msymbol = objfile -> msymbols; msymbol -> name != NULL; msymbol++)
+ for (msymbol = objfile -> msymbols; SYMBOL_NAME (msymbol) != NULL; msymbol++)
{
QUIT;
/* Get the hash index and check all the symbols
under that hash index. */
- hash = hashname (msymbol -> name);
+ hash = hashname (SYMBOL_NAME (msymbol));
for (sym = global_sym_chain[hash]; sym;)
{
- if (*(msymbol -> name) == SYMBOL_NAME (sym)[0]
- && !strcmp(msymbol -> name + 1, SYMBOL_NAME (sym) + 1))
+ if (SYMBOL_NAME (msymbol)[0] == SYMBOL_NAME (sym)[0] &&
+ STREQ(SYMBOL_NAME (msymbol) + 1, SYMBOL_NAME (sym) + 1))
{
/* Splice this symbol out of the hash chain and
assign the value we have to it. */
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
{
- fix_common_block (sym, msymbol -> address);
+ fix_common_block (sym, SYMBOL_VALUE_ADDRESS (msymbol));
}
else
{
- SYMBOL_VALUE_ADDRESS (sym) = msymbol -> address;
+ SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msymbol);
}
if (prev)
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;
}
/* Call after end_symtab() */
projects / deliverable / binutils-gdb.git / blobdiff