/* Support for printing C values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "symtab.h"
#include "demangle.h"
#include "valprint.h"
#include "language.h"
-
-/* BEGIN-FIXME */
-
-extern int vtblprint; /* Controls printing of vtbl's */
-extern int demangle; /* whether to print C++ syms raw or src-form */
-
-extern void
-cp_print_class_member PARAMS ((char *, struct type *, FILE *, char *));
-
-extern int
-cp_is_vtbl_ptr_type PARAMS ((struct type *));
-
-extern void
-cp_print_value_fields PARAMS ((struct type *, char *, FILE *, int, int,
- enum val_prettyprint, struct type **));
-
-extern int
-cp_is_vtbl_member PARAMS ((struct type *));
-
-/* END-FIXME */
-
-
-/* BEGIN-FIXME: Hooks into c-typeprint.c */
-
-extern void
-c_type_print_varspec_prefix PARAMS ((struct type *, FILE *, int, int));
-
-extern void
-cp_type_print_method_args PARAMS ((struct type **, char *, char *, int,
- FILE *));
-/* END-FIXME */
-
-
-extern struct obstack dont_print_obstack;
+#include "c-lang.h"
\f
/* Print data of type TYPE located at VALADDR (within GDB), which came from
struct type *type;
char *valaddr;
CORE_ADDR address;
- FILE *stream;
+ GDB_FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
- register unsigned int i;
+ register unsigned int i = 0; /* Number of characters printed */
unsigned len;
struct type *elttype;
unsigned eltlen;
LONGEST val;
- unsigned char c;
+ CORE_ADDR addr;
+ CHECK_TYPEDEF (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
{
- elttype = TYPE_TARGET_TYPE (type);
+ elttype = check_typedef (TYPE_TARGET_TYPE (type));
eltlen = TYPE_LENGTH (elttype);
len = TYPE_LENGTH (type) / eltlen;
if (prettyprint_arrays)
{
print_spaces_filtered (2 + 2 * recurse, stream);
}
- fprintf_filtered (stream, "{");
/* For an array of chars, print with string syntax. */
- if (eltlen == 1 && TYPE_CODE (elttype) == TYPE_CODE_INT
- && (format == 0 || format == 's') )
+ if (eltlen == 1 &&
+ ((TYPE_CODE (elttype) == TYPE_CODE_INT)
+ || ((current_language->la_language == language_m2)
+ && (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
+ && (format == 0 || format == 's'))
{
+ /* If requested, look for the first null char and only print
+ elements up to it. */
+ if (stop_print_at_null)
+ {
+ int temp_len;
+
+ /* Look for a NULL char. */
+ for (temp_len = 0;
+ valaddr[temp_len]
+ && temp_len < len && temp_len < print_max;
+ temp_len++);
+ len = temp_len;
+ }
+
LA_PRINT_STRING (stream, valaddr, len, 0);
+ i = len;
}
else
{
+ fprintf_filtered (stream, "{");
/* If this is a virtual function table, print the 0th
entry specially, and the rest of the members normally. */
if (cp_is_vtbl_ptr_type (elttype))
}
val_print_array_elements (type, valaddr, address, stream,
format, deref_ref, recurse, pretty, i);
+ fprintf_filtered (stream, "}");
}
- fprintf_filtered (stream, "}");
break;
}
/* Array of unspecified length: treat like pointer to first elt. */
- valaddr = (char *) &address;
+ addr = address;
+ goto print_unpacked_pointer;
case TYPE_CODE_PTR:
if (format && format != 's')
print_scalar_formatted (valaddr, type, format, 0, stream);
break;
}
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD)
+ if (vtblprint && cp_is_vtbl_ptr_type(type))
{
- struct type *domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
- struct fn_field *f;
- int j, len2;
- char *kind = "";
- CORE_ADDR addr;
-
- addr = unpack_pointer (lookup_pointer_type (builtin_type_void),
- valaddr);
- if (METHOD_PTR_IS_VIRTUAL(addr))
- {
- int offset = METHOD_PTR_TO_VOFFSET(addr);
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- QUIT;
- if (TYPE_FN_FIELD_VOFFSET (f, j) == offset)
- {
- kind = "virtual ";
- goto common;
- }
- }
- }
- }
- else
- {
- struct symbol *sym = find_pc_function (addr);
- if (sym == 0)
- {
- error ("invalid pointer to member function");
- }
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- QUIT;
- if (!strcmp (SYMBOL_NAME (sym),
- TYPE_FN_FIELD_PHYSNAME (f, j)))
- {
- goto common;
- }
- }
- }
- }
- common:
- if (i < len)
- {
- fprintf_filtered (stream, "&");
- c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0);
- fprintf (stream, kind);
- if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
- && TYPE_FN_FIELD_PHYSNAME (f, j)[1] == CPLUS_MARKER)
- cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
- TYPE_FN_FIELDLIST_NAME (domain, i),
- 0, stream);
- else
- cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "",
- TYPE_FN_FIELDLIST_NAME (domain, i),
- 0, stream);
- break;
- }
- fprintf_filtered (stream, "(");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, ") %d", (int) addr >> 3);
+ /* Print the unmangled name if desired. */
+ /* Print vtable entry - we only get here if we ARE using
+ -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
+ print_address_demangle(extract_address (valaddr, TYPE_LENGTH (type)),
+ stream, demangle);
+ break;
+ }
+ elttype = check_typedef (TYPE_TARGET_TYPE (type));
+ if (TYPE_CODE (elttype) == TYPE_CODE_METHOD)
+ {
+ cp_print_class_method (valaddr, type, stream);
}
- else if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_MEMBER)
+ else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
{
cp_print_class_member (valaddr,
TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)),
}
else
{
- CORE_ADDR addr = unpack_pointer (type, valaddr);
- elttype = TYPE_TARGET_TYPE (type);
+ addr = unpack_pointer (type, valaddr);
+ print_unpacked_pointer:
+ elttype = check_typedef (TYPE_TARGET_TYPE (type));
if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
{
if (addressprint && format != 's')
{
- fprintf_filtered (stream, "0x%x", addr);
+ print_address_numeric (addr, 1, stream);
}
/* For a pointer to char or unsigned char, also print the string
pointed to, unless pointer is null. */
- i = 0; /* Number of characters printed. */
- if (TYPE_LENGTH (elttype) == 1 &&
- TYPE_CODE (elttype) == TYPE_CODE_INT &&
- (format == 0 || format == 's') &&
- addr != 0 &&
- /* If print_max is UINT_MAX, the alloca below will fail.
- In that case don't try to print the string. */
- print_max < UINT_MAX)
+ if (TYPE_LENGTH (elttype) == 1
+ && TYPE_CODE (elttype) == TYPE_CODE_INT
+ && (format == 0 || format == 's')
+ && addr != 0)
{
- int first_addr_err = 0;
- int errcode = 0;
-
- /* Get first character. */
- errcode = target_read_memory (addr, (char *)&c, 1);
- if (errcode != 0)
- {
- /* First address out of bounds. */
- first_addr_err = 1;
- }
- else
- {
- /* A real string. */
- char *string = (char *) alloca (print_max);
-
- /* If the loop ends by us hitting print_max characters,
- we need to have elipses at the end. */
- int force_ellipses = 1;
-
- /* This loop always fetches print_max characters, even
- though LA_PRINT_STRING might want to print more or fewer
- (with repeated characters). This is so that
- we don't spend forever fetching if we print
- a long string consisting of the same character
- repeated. Also so we can do it all in one memory
- operation, which is faster. However, this will be
- slower if print_max is set high, e.g. if you set
- print_max to 1000, not only will it take a long
- time to fetch short strings, but if you are near
- the end of the address space, it might not work. */
- QUIT;
- errcode = target_read_memory (addr, string, print_max);
- if (errcode != 0)
- {
- /* Try reading just one character. If that succeeds,
- assume we hit the end of the address space, but
- the initial part of the string is probably safe. */
- char x[1];
- errcode = target_read_memory (addr, x, 1);
- }
- if (errcode != 0)
- force_ellipses = 0;
- else
- for (i = 0; i < print_max; i++)
- if (string[i] == '\0')
- {
- force_ellipses = 0;
- break;
- }
- QUIT;
-
- if (addressprint)
- {
- fputs_filtered (" ", stream);
- }
- LA_PRINT_STRING (stream, string, i, force_ellipses);
- }
-
- if (errcode != 0)
- {
- if (errcode == EIO)
- {
- fprintf_filtered (stream,
- (" <Address 0x%x out of bounds>" +
- first_addr_err),
- addr + i);
- }
- else
- {
- error ("Error reading memory address 0x%x: %s.",
- addr + i, safe_strerror (errcode));
- }
- }
-
- fflush (stream);
+ i = val_print_string (addr, 0, stream);
}
else if (cp_is_vtbl_member(type))
{
struct minimal_symbol *msymbol =
lookup_minimal_symbol_by_pc (vt_address);
- if ((msymbol != NULL) && (vt_address == msymbol -> address))
+ if ((msymbol != NULL) &&
+ (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
{
fputs_filtered (" <", stream);
- fputs_demangled (msymbol -> name, stream,
- DMGL_ANSI | DMGL_PARAMS);
+ fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream);
fputs_filtered (">", stream);
}
- if (vtblprint)
+ if (vt_address && vtblprint)
{
- value vt_val;
-
- vt_val = value_at (TYPE_TARGET_TYPE (type), vt_address);
+ value_ptr vt_val;
+ struct symbol *wsym = (struct symbol *)NULL;
+ struct type *wtype;
+ struct symtab *s;
+ struct block *block = (struct block *)NULL;
+ int is_this_fld;
+
+ if (msymbol != NULL)
+ wsym = lookup_symbol (SYMBOL_NAME(msymbol), block,
+ VAR_NAMESPACE, &is_this_fld, &s);
+
+ if (wsym)
+ {
+ wtype = SYMBOL_TYPE(wsym);
+ }
+ else
+ {
+ wtype = TYPE_TARGET_TYPE(type);
+ }
+ vt_val = value_at (wtype, vt_address);
val_print (VALUE_TYPE (vt_val), VALUE_CONTENTS (vt_val),
VALUE_ADDRESS (vt_val), stream, format,
deref_ref, recurse + 1, pretty);
}
}
- /* Return number of characters printed, plus one for the
- terminating null if we have "reached the end". */
- return (i + (print_max && i != print_max));
+ /* Return number of characters printed, including the terminating
+ '\0' if we reached the end. val_print_string takes care including
+ the terminating '\0' if necessary. */
+ return i;
}
break;
break;
case TYPE_CODE_REF:
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_MEMBER)
+ elttype = check_typedef (TYPE_TARGET_TYPE (type));
+ if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER)
{
cp_print_class_member (valaddr,
- TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)),
+ TYPE_DOMAIN_TYPE (elttype),
stream, "");
break;
}
if (addressprint)
{
- fprintf_filtered (stream, "@0x%lx",
- unpack_long (builtin_type_int, valaddr));
+ fprintf_filtered (stream, "@");
+ print_address_numeric
+ (extract_address (valaddr,
+ TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream);
if (deref_ref)
fputs_filtered (": ", stream);
}
/* De-reference the reference. */
if (deref_ref)
{
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
+ if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
{
- value deref_val =
+ value_ptr deref_val =
value_at
(TYPE_TARGET_TYPE (type),
unpack_pointer (lookup_pointer_type (builtin_type_void),
if (vtblprint && cp_is_vtbl_ptr_type(type))
{
/* Print the unmangled name if desired. */
+ /* Print vtable entry - we only get here if NOT using
+ -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */
print_address_demangle(*((int *) (valaddr + /* FIXME bytesex */
TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8)),
stream, demangle);
- break;
}
- cp_print_value_fields (type, valaddr, stream, format, recurse, pretty,
- 0);
+ else
+ cp_print_value_fields (type, valaddr, address, stream, format,
+ recurse, pretty, NULL, 0);
break;
case TYPE_CODE_ENUM:
break;
}
len = TYPE_NFIELDS (type);
- val = unpack_long (builtin_type_int, valaddr);
+ val = unpack_long (type, valaddr);
for (i = 0; i < len; i++)
{
QUIT;
}
else
{
-#ifdef LONG_LONG
- fprintf_filtered (stream, "%lld", val);
-#else
- fprintf_filtered (stream, "%ld", val);
-#endif
+ print_longest (stream, 'd', 0, val);
}
break;
print_address_demangle (address, stream, demangle);
break;
+ case TYPE_CODE_BOOL:
+ format = format ? format : output_format;
+ if (format)
+ print_scalar_formatted (valaddr, type, format, 0, stream);
+ else
+ {
+ val = unpack_long (type, valaddr);
+ if (val == 0)
+ fputs_filtered ("false", stream);
+ else if (val == 1)
+ fputs_filtered ("true", stream);
+ else
+ print_longest (stream, 'd', 0, val);
+ }
+ break;
+
+ case TYPE_CODE_RANGE:
+ /* FIXME: create_range_type does not set the unsigned bit in a
+ range type (I think it probably should copy it from the target
+ type), so we won't print values which are too large to
+ fit in a signed integer correctly. */
+ /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
+ print with the target type, though, because the size of our type
+ and the target type might differ). */
+ /* FALLTHROUGH */
+
case TYPE_CODE_INT:
format = format ? format : output_format;
if (format)
fprintf_filtered (stream, "<error type>");
break;
- case TYPE_CODE_RANGE:
- /* FIXME, we should not ever have to print one of these yet. */
- fprintf_filtered (stream, "<range type>");
- break;
-
case TYPE_CODE_UNDEF:
/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
default:
error ("Invalid C/C++ type code %d in symbol table.", TYPE_CODE (type));
}
- fflush (stream);
+ gdb_flush (stream);
return (0);
}
+\f
+int
+c_value_print (val, stream, format, pretty)
+ value_ptr val;
+ GDB_FILE *stream;
+ int format;
+ enum val_prettyprint pretty;
+{
+ struct type *type = VALUE_TYPE (val);
+
+ /* If it is a pointer, indicate what it points to.
+
+ Print type also if it is a reference.
+
+ C++: if it is a member pointer, we will take care
+ of that when we print it. */
+ if (TYPE_CODE (type) == TYPE_CODE_PTR ||
+ TYPE_CODE (type) == TYPE_CODE_REF)
+ {
+ /* Hack: remove (char *) for char strings. Their
+ type is indicated by the quoted string anyway. */
+ if (TYPE_CODE (type) == TYPE_CODE_PTR &&
+ TYPE_NAME (type) == NULL &&
+ TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL &&
+ STREQ (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char"))
+ {
+ /* Print nothing */
+ }
+ else
+ {
+ fprintf_filtered (stream, "(");
+ type_print (type, "", stream, -1);
+ fprintf_filtered (stream, ") ");
+ }
+ }
+ return (val_print (type, VALUE_CONTENTS (val),
+ VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
+}
projects / binutils.git / blobdiff