/* Ada language support routines for GDB, the GNU debugger. Copyright (C)
- 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005 Free
- Software Foundation, Inc.
+ 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "infcall.h"
#include "dictionary.h"
#include "exceptions.h"
+#include "annotate.h"
+#include "valprint.h"
+#include "source.h"
+#include "observer.h"
+#include "vec.h"
#ifndef ADA_RETAIN_DOTS
#define ADA_RETAIN_DOTS 0
#define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2)
#endif
-
static void extract_string (CORE_ADDR addr, char *buf);
-static struct type *ada_create_fundamental_type (struct objfile *, int);
-
static void modify_general_field (char *, LONGEST, int, int);
static struct type *desc_base_type (struct type *);
static void ada_add_block_symbols (struct obstack *,
struct block *, const char *,
- domain_enum, struct objfile *,
- struct symtab *, int);
+ domain_enum, struct objfile *, int);
static int is_nonfunction (struct ada_symbol_info *, int);
static void add_defn_to_vec (struct obstack *, struct symbol *,
- struct block *, struct symtab *);
+ struct block *);
static int num_defns_collected (struct obstack *);
static int discrete_type_p (struct type *);
+static enum ada_renaming_category parse_old_style_renaming (struct type *,
+ const char **,
+ int *,
+ const char **);
+
+static struct symbol *find_old_style_renaming_symbol (const char *,
+ struct block *);
+
static struct type *ada_lookup_struct_elt_type (struct type *, char *,
int, int, int *);
struct objfile *);
static struct type *to_static_fixed_type (struct type *);
+static struct type *static_unwrap_type (struct type *type);
static struct value *unwrap_value (struct value *);
static int is_name_suffix (const char *);
+static int is_digits_suffix (const char *str);
+
static int wild_match (const char *, int, const char *);
static struct value *ada_coerce_ref (struct value *);
static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[]
= "__gnat_ada_main_program_name";
-/* The name of the runtime function called when an exception is raised. */
-static const char raise_sym_name[] = "__gnat_raise_nodefer_with_msg";
-
-/* The name of the runtime function called when an unhandled exception
- is raised. */
-static const char raise_unhandled_sym_name[] = "__gnat_unhandled_exception";
-
-/* The name of the runtime function called when an assert failure is
- raised. */
-static const char raise_assert_sym_name[] =
- "system__assertions__raise_assert_failure";
-
-/* A string that reflects the longest exception expression rewrite,
- aside from the exception name. */
-static const char longest_exception_template[] =
- "'__gnat_raise_nodefer_with_msg' if long_integer(e) = long_integer(&)";
-
/* Limit on the number of warnings to raise per expression evaluation. */
static int warning_limit = 2;
/* Utilities */
+/* Given DECODED_NAME a string holding a symbol name in its
+ decoded form (ie using the Ada dotted notation), returns
+ its unqualified name. */
+
+static const char *
+ada_unqualified_name (const char *decoded_name)
+{
+ const char *result = strrchr (decoded_name, '.');
+
+ if (result != NULL)
+ result++; /* Skip the dot... */
+ else
+ result = decoded_name;
+
+ return result;
+}
+
+/* Return a string starting with '<', followed by STR, and '>'.
+ The result is good until the next call. */
+
+static char *
+add_angle_brackets (const char *str)
+{
+ static char *result = NULL;
+
+ xfree (result);
+ result = (char *) xmalloc ((strlen (str) + 3) * sizeof (char));
+
+ sprintf (result, "<%s>", str);
+ return result;
+}
static char *
ada_get_gdb_completer_word_break_characters (void)
}
/* The largest value in the domain of TYPE, a discrete type, as an integer. */
-static struct value *
+static LONGEST
discrete_type_high_bound (struct type *type)
{
switch (TYPE_CODE (type))
{
case TYPE_CODE_RANGE:
- return value_from_longest (TYPE_TARGET_TYPE (type),
- TYPE_HIGH_BOUND (type));
+ return TYPE_HIGH_BOUND (type);
case TYPE_CODE_ENUM:
- return
- value_from_longest (type,
- TYPE_FIELD_BITPOS (type,
- TYPE_NFIELDS (type) - 1));
+ return TYPE_FIELD_BITPOS (type, TYPE_NFIELDS (type) - 1);
+ case TYPE_CODE_BOOL:
+ return 1;
+ case TYPE_CODE_CHAR:
case TYPE_CODE_INT:
- return value_from_longest (type, max_of_type (type));
+ return max_of_type (type);
default:
error (_("Unexpected type in discrete_type_high_bound."));
}
}
/* The largest value in the domain of TYPE, a discrete type, as an integer. */
-static struct value *
+static LONGEST
discrete_type_low_bound (struct type *type)
{
switch (TYPE_CODE (type))
{
case TYPE_CODE_RANGE:
- return value_from_longest (TYPE_TARGET_TYPE (type),
- TYPE_LOW_BOUND (type));
+ return TYPE_LOW_BOUND (type);
case TYPE_CODE_ENUM:
- return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0));
+ return TYPE_FIELD_BITPOS (type, 0);
+ case TYPE_CODE_BOOL:
+ return 0;
+ case TYPE_CODE_CHAR:
case TYPE_CODE_INT:
- return value_from_longest (type, min_of_type (type));
+ return min_of_type (type);
default:
error (_("Unexpected type in discrete_type_low_bound."));
}
return (isdigit (c) || (isalpha (c) && islower (c)));
}
-/* Decode:
- . Discard trailing .{DIGIT}+, ${DIGIT}+ or ___{DIGIT}+
- These are suffixes introduced by GNAT5 to nested subprogram
- names, and do not serve any purpose for the debugger.
- . Discard final __{DIGIT}+ or $({DIGIT}+(__{DIGIT}+)*)
- . Discard final N if it follows a lowercase alphanumeric character
- (protected object subprogram suffix)
- . Convert other instances of embedded "__" to `.'.
- . Discard leading _ada_.
- . Convert operator names to the appropriate quoted symbols.
- . Remove everything after first ___ if it is followed by
- 'X'.
- . Replace TK__ with __, and a trailing B or TKB with nothing.
- . Replace _[EB]{DIGIT}+[sb] with nothing (protected object entries)
- . Put symbols that should be suppressed in <...> brackets.
- . Remove trailing X[bn]* suffix (indicating names in package bodies).
+/* Remove either of these suffixes:
+ . .{DIGIT}+
+ . ${DIGIT}+
+ . ___{DIGIT}+
+ . __{DIGIT}+.
+ These are suffixes introduced by the compiler for entities such as
+ nested subprogram for instance, in order to avoid name clashes.
+ They do not serve any purpose for the debugger. */
+
+static void
+ada_remove_trailing_digits (const char *encoded, int *len)
+{
+ if (*len > 1 && isdigit (encoded[*len - 1]))
+ {
+ int i = *len - 2;
+ while (i > 0 && isdigit (encoded[i]))
+ i--;
+ if (i >= 0 && encoded[i] == '.')
+ *len = i;
+ else if (i >= 0 && encoded[i] == '$')
+ *len = i;
+ else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0)
+ *len = i - 2;
+ else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0)
+ *len = i - 1;
+ }
+}
+
+/* Remove the suffix introduced by the compiler for protected object
+ subprograms. */
+
+static void
+ada_remove_po_subprogram_suffix (const char *encoded, int *len)
+{
+ /* Remove trailing N. */
+
+ /* Protected entry subprograms are broken into two
+ separate subprograms: The first one is unprotected, and has
+ a 'N' suffix; the second is the protected version, and has
+ the 'P' suffix. The second calls the first one after handling
+ the protection. Since the P subprograms are internally generated,
+ we leave these names undecoded, giving the user a clue that this
+ entity is internal. */
+
+ if (*len > 1
+ && encoded[*len - 1] == 'N'
+ && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2])))
+ *len = *len - 1;
+}
+
+/* If ENCODED follows the GNAT entity encoding conventions, then return
+ the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is
+ replaced by ENCODED.
The resulting string is valid until the next call of ada_decode.
- If the string is unchanged by demangling, the original string pointer
+ If the string is unchanged by decoding, the original string pointer
is returned. */
const char *
static char *decoding_buffer = NULL;
static size_t decoding_buffer_size = 0;
+ /* The name of the Ada main procedure starts with "_ada_".
+ This prefix is not part of the decoded name, so skip this part
+ if we see this prefix. */
if (strncmp (encoded, "_ada_", 5) == 0)
encoded += 5;
+ /* If the name starts with '_', then it is not a properly encoded
+ name, so do not attempt to decode it. Similarly, if the name
+ starts with '<', the name should not be decoded. */
if (encoded[0] == '_' || encoded[0] == '<')
goto Suppress;
- /* Remove trailing .{DIGIT}+ or ___{DIGIT}+ or __{DIGIT}+. */
len0 = strlen (encoded);
- if (len0 > 1 && isdigit (encoded[len0 - 1]))
- {
- i = len0 - 2;
- while (i > 0 && isdigit (encoded[i]))
- i--;
- if (i >= 0 && encoded[i] == '.')
- len0 = i;
- else if (i >= 0 && encoded[i] == '$')
- len0 = i;
- else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0)
- len0 = i - 2;
- else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0)
- len0 = i - 1;
- }
-
- /* Remove trailing N. */
-
- /* Protected entry subprograms are broken into two
- separate subprograms: The first one is unprotected, and has
- a 'N' suffix; the second is the protected version, and has
- the 'P' suffix. The second calls the first one after handling
- the protection. Since the P subprograms are internally generated,
- we leave these names undecoded, giving the user a clue that this
- entity is internal. */
- if (len0 > 1
- && encoded[len0 - 1] == 'N'
- && (isdigit (encoded[len0 - 2]) || islower (encoded[len0 - 2])))
- len0--;
+ ada_remove_trailing_digits (encoded, &len0);
+ ada_remove_po_subprogram_suffix (encoded, &len0);
/* Remove the ___X.* suffix if present. Do not forget to verify that
the suffix is located before the current "end" of ENCODED. We want
goto Suppress;
}
+ /* Remove any trailing TKB suffix. It tells us that this symbol
+ is for the body of a task, but that information does not actually
+ appear in the decoded name. */
+
if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0)
len0 -= 3;
+ /* Remove trailing "B" suffixes. */
+ /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */
+
if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0)
len0 -= 1;
/* Make decoded big enough for possible expansion by operator name. */
+
GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1);
decoded = decoding_buffer;
+ /* Remove trailing __{digit}+ or trailing ${digit}+. */
+
if (len0 > 1 && isdigit (encoded[len0 - 1]))
{
i = len0 - 2;
len0 = i;
}
+ /* The first few characters that are not alphabetic are not part
+ of any encoding we use, so we can copy them over verbatim. */
+
for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1)
decoded[j] = encoded[i];
at_start_name = 1;
while (i < len0)
{
+ /* Is this a symbol function? */
if (at_start_name && encoded[i] == 'O')
{
int k;
if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0)
i += 2;
+ /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually
+ be translated into "." (just below). These are internal names
+ generated for anonymous blocks inside which our symbol is nested. */
+
+ if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_'
+ && encoded [i+2] == 'B' && encoded [i+3] == '_'
+ && isdigit (encoded [i+4]))
+ {
+ int k = i + 5;
+
+ while (k < len0 && isdigit (encoded[k]))
+ k++; /* Skip any extra digit. */
+
+ /* Double-check that the "__B_{DIGITS}+" sequence we found
+ is indeed followed by "__". */
+ if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_')
+ i = k;
+ }
+
/* Remove _E{DIGITS}+[sb] */
/* Just as for protected object subprograms, there are 2 categories
if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1]))
{
+ /* This is a X[bn]* sequence not separated from the previous
+ part of the name with a non-alpha-numeric character (in other
+ words, immediately following an alpha-numeric character), then
+ verify that it is placed at the end of the encoded name. If
+ not, then the encoding is not valid and we should abort the
+ decoding. Otherwise, just skip it, it is used in body-nested
+ package names. */
do
i += 1;
while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n'));
else if (!ADA_RETAIN_DOTS
&& i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_')
{
+ /* Replace '__' by '.'. */
decoded[j] = '.';
at_start_name = 1;
i += 2;
}
else
{
+ /* It's a character part of the decoded name, so just copy it
+ over. */
decoded[j] = encoded[i];
i += 1;
j += 1;
}
decoded[j] = '\000';
+ /* Decoded names should never contain any uppercase character.
+ Double-check this, and abort the decoding if we find one. */
+
for (i = 0; decoded[i] != '\0'; i += 1)
if (isupper (decoded[i]) || decoded[i] == ' ')
goto Suppress;
if (*resultp == NULL)
{
const char *decoded = ada_decode (gsymbol->name);
- if (gsymbol->bfd_section != NULL)
+ if (gsymbol->obj_section != NULL)
{
- bfd *obfd = gsymbol->bfd_section->owner;
- if (obfd != NULL)
- {
- struct objfile *objf;
- ALL_OBJFILES (objf)
- {
- if (obfd == objf->obfd)
- {
- *resultp = obsavestring (decoded, strlen (decoded),
- &objf->objfile_obstack);
- break;
- }
- }
- }
+ struct objfile *objf = gsymbol->obj_section->objfile;
+ *resultp = obsavestring (decoded, strlen (decoded),
+ &objf->objfile_obstack);
}
/* Sometimes, we can't find a corresponding objfile, in which
case, we put the result on the heap. Since we only decode
desc_bounds_type (thin_descriptor_type (type));
LONGEST addr;
- if (desc_bounds_type == NULL)
+ if (bounds_type == NULL)
error (_("Bad GNAT array descriptor"));
/* NOTE: The following calculation is not really kosher, but
(*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
}
- TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (new_type) = 1;
return new_type;
}
{
struct symbol *sym;
struct block **blocks;
- const char *raw_name = ada_type_name (ada_check_typedef (type));
- char *name = (char *) alloca (strlen (raw_name) + 1);
- char *tail = strstr (raw_name, "___XP");
+ char *raw_name = ada_type_name (ada_check_typedef (type));
+ char *name;
+ char *tail;
struct type *shadow_type;
long bits;
int i, n;
+ if (!raw_name)
+ raw_name = ada_type_name (desc_base_type (type));
+
+ if (!raw_name)
+ return NULL;
+
+ name = (char *) alloca (strlen (raw_name) + 1);
+ tail = strstr (raw_name, "___XP");
type = desc_base_type (type);
memcpy (name, raw_name, tail - raw_name);
return NULL;
}
- if (BITS_BIG_ENDIAN && ada_is_modular_type (value_type (arr)))
+ if (gdbarch_bits_big_endian (current_gdbarch)
+ && ada_is_modular_type (value_type (arr)))
{
/* This is a (right-justified) modular type representing a packed
array with no wrapper. In order to interpret the value through
int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8;
/* Transmit bytes from least to most significant; delta is the direction
the indices move. */
- int delta = BITS_BIG_ENDIAN ? -1 : 1;
+ int delta = gdbarch_bits_big_endian (current_gdbarch) ? -1 : 1;
type = ada_check_typedef (type);
v = allocate_value (type);
bytes = (unsigned char *) (valaddr + offset);
}
- else if (value_lazy (obj))
+ else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj))
{
v = value_at (type,
VALUE_ADDRESS (obj) + value_offset (obj) + offset);
memset (unpacked, 0, TYPE_LENGTH (type));
return v;
}
- else if (BITS_BIG_ENDIAN)
+ else if (gdbarch_bits_big_endian (current_gdbarch))
{
src = len - 1;
if (has_negatives (type)
targ_offset %= HOST_CHAR_BIT;
source += src_offset / HOST_CHAR_BIT;
src_offset %= HOST_CHAR_BIT;
- if (BITS_BIG_ENDIAN)
+ if (gdbarch_bits_big_endian (current_gdbarch))
{
accum = (unsigned char) *source;
source += 1;
{
int len = (value_bitpos (toval)
+ bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
+ int from_size;
char *buffer = (char *) alloca (len);
struct value *val;
CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval);
fromval = value_cast (type, fromval);
read_memory (to_addr, buffer, len);
- if (BITS_BIG_ENDIAN)
+ from_size = value_bitsize (fromval);
+ if (from_size == 0)
+ from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT;
+ if (gdbarch_bits_big_endian (current_gdbarch))
move_bits (buffer, value_bitpos (toval),
- value_contents (fromval),
- TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT -
- bits, bits);
+ value_contents (fromval), from_size - bits, bits);
else
move_bits (buffer, value_bitpos (toval), value_contents (fromval),
0, bits);
else
bits = value_bitsize (component);
- if (BITS_BIG_ENDIAN)
+ if (gdbarch_bits_big_endian (current_gdbarch))
move_bits (value_contents_writeable (container) + offset_in_container,
value_bitpos (container) + bit_offset_in_container,
value_contents (val),
get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb);
idx = value_pos_atr (ind[k]);
if (lwb != 0)
- idx = value_sub (idx, value_from_longest (builtin_type_int, lwb));
- arr = value_add (arr, idx);
+ idx = value_binop (idx, value_from_longest (value_type (idx), lwb),
+ BINOP_SUB);
+
+ arr = value_ptradd (arr, idx);
type = TYPE_TARGET_TYPE (type);
}
bounds type. It works for other arrays with bounds supplied by
run-time quantities other than discriminants. */
-LONGEST
+static LONGEST
ada_array_bound_from_type (struct type * arr_type, int n, int which,
struct type ** typep)
{
index_type_desc = ada_find_parallel_type (type, "___XA");
if (index_type_desc == NULL)
{
- struct type *range_type;
struct type *index_type;
while (n > 1)
n -= 1;
}
- range_type = TYPE_INDEX_TYPE (type);
- index_type = TYPE_TARGET_TYPE (range_type);
- if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF)
- index_type = builtin_type_long;
+ index_type = TYPE_INDEX_TYPE (type);
if (typep != NULL)
*typep = index_type;
+
+ /* The index type is either a range type or an enumerated type.
+ For the range type, we have some macros that allow us to
+ extract the value of the low and high bounds. But they
+ do now work for enumerated types. The expressions used
+ below work for both range and enum types. */
return
(LONGEST) (which == 0
- ? TYPE_LOW_BOUND (range_type)
- : TYPE_HIGH_BOUND (range_type));
+ ? TYPE_FIELD_BITPOS (index_type, 0)
+ : TYPE_FIELD_BITPOS (index_type,
+ TYPE_NFIELDS (index_type) - 1));
}
else
{
struct type *index_type =
to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1),
NULL, TYPE_OBJFILE (arr_type));
+
if (typep != NULL)
- *typep = TYPE_TARGET_TYPE (index_type);
+ *typep = index_type;
+
return
(LONGEST) (which == 0
? TYPE_LOW_BOUND (index_type)
}
/* Given that arr is an array value, returns the lower bound of the
- nth index (numbering from 1) if which is 0, and the upper bound if
- which is 1. This routine will also work for arrays with bounds
+ nth index (numbering from 1) if WHICH is 0, and the upper bound if
+ WHICH is 1. This routine will also work for arrays with bounds
supplied by run-time quantities other than discriminants. */
struct value *
}
else
return
- value_from_longest (builtin_type_int,
+ value_from_longest (builtin_type_int32,
value_as_long (desc_one_bound (desc_bounds (arr),
n, 1))
- value_as_long (desc_one_bound (desc_bounds (arr),
case BINOP_REPEAT:
case BINOP_SUBSCRIPT:
case BINOP_COMMA:
+ *pos += 1;
+ nargs = 2;
+ break;
case UNOP_NEG:
case UNOP_PLUS:
case OP_TYPE:
case OP_BOOL:
case OP_LAST:
- case OP_REGISTER:
case OP_INTERNALVAR:
*pos += 3;
break;
nargs = 1;
break;
+ case OP_REGISTER:
+ *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
+ break;
+
case STRUCTOP_STRUCT:
*pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
nargs = 1;
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
- case LOC_REGPARM:
case LOC_REGPARM_ADDR:
case LOC_LOCAL:
- case LOC_LOCAL_ARG:
- case LOC_BASEREG:
- case LOC_BASEREG_ARG:
case LOC_COMPUTED:
- case LOC_COMPUTED_ARG:
goto FoundNonType;
default:
break;
break;
case OP_TYPE:
+ case OP_REGISTER:
return NULL;
}
int *chosen = (int *) alloca (sizeof (int) * nsyms);
int n_chosen;
int first_choice = (max_results == 1) ? 1 : 2;
+ const char *select_mode = multiple_symbols_select_mode ();
if (max_results < 1)
error (_("Request to select 0 symbols!"));
if (nsyms <= 1)
return nsyms;
+ if (select_mode == multiple_symbols_cancel)
+ error (_("\
+canceled because the command is ambiguous\n\
+See set/show multiple-symbol."));
+
+ /* If select_mode is "all", then return all possible symbols.
+ Only do that if more than one symbol can be selected, of course.
+ Otherwise, display the menu as usual. */
+ if (select_mode == multiple_symbols_all && max_results > 1)
+ return nsyms;
+
printf_unfiltered (_("[0] cancel\n"));
if (max_results > 1)
printf_unfiltered (_("[1] all\n"));
int is_all_choice, char *annotation_suffix)
{
char *args;
- const char *prompt;
+ char *prompt;
int n_chosen;
int first_choice = is_all_choice ? 2 : 1;
prompt = getenv ("PS2");
if (prompt == NULL)
- prompt = ">";
+ prompt = "> ";
- printf_unfiltered (("%s "), prompt);
- gdb_flush (gdb_stdout);
-
- args = command_line_input ((char *) NULL, 0, annotation_suffix);
+ args = command_line_input (prompt, 0, annotation_suffix);
if (args == NULL)
error_no_arg (_("one or more choice numbers"));
return (!(scalar_type_p (type0) && scalar_type_p (type1)));
case BINOP_CONCAT:
- return
- ((TYPE_CODE (type0) != TYPE_CODE_ARRAY
- && (TYPE_CODE (type0) != TYPE_CODE_PTR
- || TYPE_CODE (TYPE_TARGET_TYPE (type0)) != TYPE_CODE_ARRAY))
- || (TYPE_CODE (type1) != TYPE_CODE_ARRAY
- && (TYPE_CODE (type1) != TYPE_CODE_PTR
- || (TYPE_CODE (TYPE_TARGET_TYPE (type1))
- != TYPE_CODE_ARRAY))));
+ return !ada_is_array_type (type0) || !ada_is_array_type (type1);
case BINOP_EXP:
return (!(numeric_type_p (type0) && integer_type_p (type1)));
\f
/* Renaming */
-/* NOTE: In the following, we assume that a renaming type's name may
- have an ___XD suffix. It would be nice if this went away at some
- point. */
-
-/* If TYPE encodes a renaming, returns the renaming suffix, which
- is XR for an object renaming, XRP for a procedure renaming, XRE for
- an exception renaming, and XRS for a subprogram renaming. Returns
- NULL if NAME encodes none of these. */
-
-const char *
-ada_renaming_type (struct type *type)
-{
- if (type != NULL && TYPE_CODE (type) == TYPE_CODE_ENUM)
+/* NOTES:
+
+ 1. In the following, we assume that a renaming type's name may
+ have an ___XD suffix. It would be nice if this went away at some
+ point.
+ 2. We handle both the (old) purely type-based representation of
+ renamings and the (new) variable-based encoding. At some point,
+ it is devoutly to be hoped that the former goes away
+ (FIXME: hilfinger-2007-07-09).
+ 3. Subprogram renamings are not implemented, although the XRS
+ suffix is recognized (FIXME: hilfinger-2007-07-09). */
+
+/* If SYM encodes a renaming,
+
+ <renaming> renames <renamed entity>,
+
+ sets *LEN to the length of the renamed entity's name,
+ *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to
+ the string describing the subcomponent selected from the renamed
+ entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming
+ (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR
+ are undefined). Otherwise, returns a value indicating the category
+ of entity renamed: an object (ADA_OBJECT_RENAMING), exception
+ (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or
+ subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the
+ strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be
+ deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR
+ may be NULL, in which case they are not assigned.
+
+ [Currently, however, GCC does not generate subprogram renamings.] */
+
+enum ada_renaming_category
+ada_parse_renaming (struct symbol *sym,
+ const char **renamed_entity, int *len,
+ const char **renaming_expr)
+{
+ enum ada_renaming_category kind;
+ const char *info;
+ const char *suffix;
+
+ if (sym == NULL)
+ return ADA_NOT_RENAMING;
+ switch (SYMBOL_CLASS (sym))
{
- const char *name = type_name_no_tag (type);
- const char *suffix = (name == NULL) ? NULL : strstr (name, "___XR");
- if (suffix == NULL
- || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL))
- return NULL;
- else
- return suffix + 3;
+ default:
+ return ADA_NOT_RENAMING;
+ case LOC_TYPEDEF:
+ return parse_old_style_renaming (SYMBOL_TYPE (sym),
+ renamed_entity, len, renaming_expr);
+ case LOC_LOCAL:
+ case LOC_STATIC:
+ case LOC_COMPUTED:
+ case LOC_OPTIMIZED_OUT:
+ info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR");
+ if (info == NULL)
+ return ADA_NOT_RENAMING;
+ switch (info[5])
+ {
+ case '_':
+ kind = ADA_OBJECT_RENAMING;
+ info += 6;
+ break;
+ case 'E':
+ kind = ADA_EXCEPTION_RENAMING;
+ info += 7;
+ break;
+ case 'P':
+ kind = ADA_PACKAGE_RENAMING;
+ info += 7;
+ break;
+ case 'S':
+ kind = ADA_SUBPROGRAM_RENAMING;
+ info += 7;
+ break;
+ default:
+ return ADA_NOT_RENAMING;
+ }
}
- else
- return NULL;
-}
-
-/* Return non-zero iff SYM encodes an object renaming. */
-
-int
-ada_is_object_renaming (struct symbol *sym)
-{
- const char *renaming_type = ada_renaming_type (SYMBOL_TYPE (sym));
- return renaming_type != NULL
- && (renaming_type[2] == '\0' || renaming_type[2] == '_');
-}
-
-/* Assuming that SYM encodes a non-object renaming, returns the original
- name of the renamed entity. The name is good until the end of
- parsing. */
-char *
-ada_simple_renamed_entity (struct symbol *sym)
-{
- struct type *type;
- const char *raw_name;
- int len;
- char *result;
-
- type = SYMBOL_TYPE (sym);
- if (type == NULL || TYPE_NFIELDS (type) < 1)
- error (_("Improperly encoded renaming."));
+ if (renamed_entity != NULL)
+ *renamed_entity = info;
+ suffix = strstr (info, "___XE");
+ if (suffix == NULL || suffix == info)
+ return ADA_NOT_RENAMING;
+ if (len != NULL)
+ *len = strlen (info) - strlen (suffix);
+ suffix += 5;
+ if (renaming_expr != NULL)
+ *renaming_expr = suffix;
+ return kind;
+}
+
+/* Assuming TYPE encodes a renaming according to the old encoding in
+ exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY,
+ *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns
+ ADA_NOT_RENAMING otherwise. */
+static enum ada_renaming_category
+parse_old_style_renaming (struct type *type,
+ const char **renamed_entity, int *len,
+ const char **renaming_expr)
+{
+ enum ada_renaming_category kind;
+ const char *name;
+ const char *info;
+ const char *suffix;
- raw_name = TYPE_FIELD_NAME (type, 0);
- len = (raw_name == NULL ? 0 : strlen (raw_name)) - 5;
- if (len <= 0)
- error (_("Improperly encoded renaming."));
+ if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM
+ || TYPE_NFIELDS (type) != 1)
+ return ADA_NOT_RENAMING;
- result = xmalloc (len + 1);
- strncpy (result, raw_name, len);
- result[len] = '\000';
- return result;
-}
+ name = type_name_no_tag (type);
+ if (name == NULL)
+ return ADA_NOT_RENAMING;
+
+ name = strstr (name, "___XR");
+ if (name == NULL)
+ return ADA_NOT_RENAMING;
+ switch (name[5])
+ {
+ case '\0':
+ case '_':
+ kind = ADA_OBJECT_RENAMING;
+ break;
+ case 'E':
+ kind = ADA_EXCEPTION_RENAMING;
+ break;
+ case 'P':
+ kind = ADA_PACKAGE_RENAMING;
+ break;
+ case 'S':
+ kind = ADA_SUBPROGRAM_RENAMING;
+ break;
+ default:
+ return ADA_NOT_RENAMING;
+ }
+
+ info = TYPE_FIELD_NAME (type, 0);
+ if (info == NULL)
+ return ADA_NOT_RENAMING;
+ if (renamed_entity != NULL)
+ *renamed_entity = info;
+ suffix = strstr (info, "___XE");
+ if (renaming_expr != NULL)
+ *renaming_expr = suffix + 5;
+ if (suffix == NULL || suffix == info)
+ return ADA_NOT_RENAMING;
+ if (len != NULL)
+ *len = suffix - info;
+ return kind;
+}
\f
/* The following is taken from the structure-return code in
call_function_by_hand. FIXME: Therefore, some refactoring seems
indicated. */
- if (INNER_THAN (1, 2))
+ if (gdbarch_inner_than (current_gdbarch, 1, 2))
{
/* Stack grows downward. Align SP and VALUE_ADDRESS (val) after
reserving sufficient space. */
if (gdbarch_frame_align_p (current_gdbarch))
*sp = gdbarch_frame_align (current_gdbarch, *sp);
}
+ VALUE_LVAL (val) = lval_memory;
write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len);
}
allocating any necessary descriptors (fat pointers), or copies of
values not residing in memory, updating it as needed. */
-static struct value *
-convert_actual (struct value *actual, struct type *formal_type0,
- CORE_ADDR *sp)
+struct value *
+ada_convert_actual (struct value *actual, struct type *formal_type0,
+ CORE_ADDR *sp)
{
struct type *actual_type = ada_check_typedef (value_type (actual));
struct type *formal_type = ada_check_typedef (formal_type0);
if (ada_is_array_descriptor_type (formal_target)
&& TYPE_CODE (actual_target) == TYPE_CODE_ARRAY)
return make_array_descriptor (formal_type, actual, sp);
- else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR)
+ else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR
+ || TYPE_CODE (formal_type) == TYPE_CODE_REF)
{
+ struct value *result;
if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY
&& ada_is_array_descriptor_type (actual_target))
- return desc_data (actual);
+ result = desc_data (actual);
else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR)
{
if (VALUE_LVAL (actual) != lval_memory)
TYPE_LENGTH (actual_type));
actual = ensure_lval (val, sp);
}
- return value_addr (actual);
+ result = value_addr (actual);
}
+ else
+ return actual;
+ return value_cast_pointers (formal_type, result);
}
else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR)
return ada_value_ind (actual);
else
return descriptor;
}
-
-
-/* Assuming a dummy frame has been established on the target, perform any
- conversions needed for calling function FUNC on the NARGS actual
- parameters in ARGS, other than standard C conversions. Does
- nothing if FUNC does not have Ada-style prototype data, or if NARGS
- does not match the number of arguments expected. Use *SP as a
- stack pointer for additional data that must be pushed, updating its
- value as needed. */
-
-void
-ada_convert_actuals (struct value *func, int nargs, struct value *args[],
- CORE_ADDR *sp)
-{
- int i;
-
- if (TYPE_NFIELDS (value_type (func)) == 0
- || nargs != TYPE_NFIELDS (value_type (func)))
- return;
-
- for (i = 0; i < nargs; i += 1)
- args[i] =
- convert_actual (args[i], TYPE_FIELD_TYPE (value_type (func), i), sp);
-}
\f
/* Dummy definitions for an experimental caching module that is not
* used in the public sources. */
static int
lookup_cached_symbol (const char *name, domain_enum namespace,
- struct symbol **sym, struct block **block,
- struct symtab **symtab)
+ struct symbol **sym, struct block **block)
{
return 0;
}
static void
cache_symbol (const char *name, domain_enum namespace, struct symbol *sym,
- struct block *block, struct symtab *symtab)
+ struct block *block)
{
}
\f
domain_enum domain)
{
struct symbol *sym;
- struct symtab *symtab;
- if (lookup_cached_symbol (name, domain, &sym, NULL, NULL))
+ if (lookup_cached_symbol (name, domain, &sym, NULL))
return sym;
- sym =
- lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab);
- cache_symbol (name, domain, sym, block_found, symtab);
+ sym = lookup_symbol_in_language (name, block, domain, language_c, 0);
+ cache_symbol (name, domain, sym, block_found);
return sym;
}
static void
add_defn_to_vec (struct obstack *obstackp,
struct symbol *sym,
- struct block *block, struct symtab *symtab)
+ struct block *block)
{
int i;
size_t tmp;
{
prevDefns[i].sym = sym;
prevDefns[i].block = block;
- prevDefns[i].symtab = symtab;
return;
}
}
info.sym = sym;
info.block = block;
- info.symtab = symtab;
obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info));
}
}
{
struct partial_symbol *psym = start[i];
- if (SYMBOL_DOMAIN (psym) == namespace
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
+ SYMBOL_DOMAIN (psym), namespace)
&& wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym)))
return psym;
}
{
struct partial_symbol *psym = start[i];
- if (SYMBOL_DOMAIN (psym) == namespace)
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
+ SYMBOL_DOMAIN (psym), namespace))
{
int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len);
{
struct partial_symbol *psym = start[i];
- if (SYMBOL_DOMAIN (psym) == namespace)
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (psym),
+ SYMBOL_DOMAIN (psym), namespace))
{
int cmp;
struct dict_iterator iter;
int j;
- ALL_SYMTABS (objfile, s)
+ ALL_PRIMARY_SYMTABS (objfile, s)
{
switch (SYMBOL_CLASS (sym))
{
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
- case LOC_REGPARM:
case LOC_REGPARM_ADDR:
case LOC_LOCAL:
case LOC_TYPEDEF:
- case LOC_LOCAL_ARG:
- case LOC_BASEREG:
- case LOC_BASEREG_ARG:
case LOC_COMPUTED:
- case LOC_COMPUTED_ARG:
for (j = FIRST_LOCAL_BLOCK;
j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1)
{
{
}
-/* FIXME: The next two routines belong in symtab.c */
-
-static void
-restore_language (void *lang)
-{
- set_language ((enum language) lang);
-}
-
-/* As for lookup_symbol, but performed as if the current language
- were LANG. */
-
-struct symbol *
-lookup_symbol_in_language (const char *name, const struct block *block,
- domain_enum domain, enum language lang,
- int *is_a_field_of_this, struct symtab **symtab)
-{
- struct cleanup *old_chain
- = make_cleanup (restore_language, (void *) current_language->la_language);
- struct symbol *result;
- set_language (lang);
- result = lookup_symbol (name, block, domain, is_a_field_of_this, symtab);
- do_cleanups (old_chain);
- return result;
-}
-
/* True if TYPE is definitely an artificial type supplied to a symbol
for which no debugging information was given in the symbol file. */
}
/* Return nonzero if SYM corresponds to a renaming entity that is
- visible from FUNCTION_NAME. */
+ not visible from FUNCTION_NAME. */
static int
-renaming_is_visible (const struct symbol *sym, char *function_name)
+old_renaming_is_invisible (const struct symbol *sym, char *function_name)
{
- char *scope = xget_renaming_scope (SYMBOL_TYPE (sym));
+ char *scope;
+
+ if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
+ return 0;
+
+ scope = xget_renaming_scope (SYMBOL_TYPE (sym));
make_cleanup (xfree, scope);
/* If the rename has been defined in a package, then it is visible. */
if (is_package_name (scope))
- return 1;
+ return 0;
/* Check that the rename is in the current function scope by checking
that its name starts with SCOPE. */
if (strncmp (function_name, "_ada_", 5) == 0)
function_name += 5;
- return (strncmp (function_name, scope, strlen (scope)) == 0);
+ return (strncmp (function_name, scope, strlen (scope)) != 0);
}
-/* Iterates over the SYMS list and remove any entry that corresponds to
- a renaming entity that is not visible from the function associated
- with CURRENT_BLOCK.
+/* Remove entries from SYMS that corresponds to a renaming entity that
+ is not visible from the function associated with CURRENT_BLOCK or
+ that is superfluous due to the presence of more specific renaming
+ information. Places surviving symbols in the initial entries of
+ SYMS and returns the number of surviving symbols.
Rationale:
- GNAT emits a type following a specified encoding for each renaming
+ First, in cases where an object renaming is implemented as a
+ reference variable, GNAT may produce both the actual reference
+ variable and the renaming encoding. In this case, we discard the
+ latter.
+
+ Second, GNAT emits a type following a specified encoding for each renaming
entity. Unfortunately, STABS currently does not support the definition
of types that are local to a given lexical block, so all renamings types
are emitted at library level. As a consequence, if an application
the user will be unable to print such rename entities. */
static int
-remove_out_of_scope_renamings (struct ada_symbol_info *syms,
- int nsyms, struct block *current_block)
+remove_irrelevant_renamings (struct ada_symbol_info *syms,
+ int nsyms, const struct block *current_block)
{
struct symbol *current_function;
char *current_function_name;
int i;
+ int is_new_style_renaming;
+
+ /* If there is both a renaming foo___XR... encoded as a variable and
+ a simple variable foo in the same block, discard the latter.
+ First, zero out such symbols, then compress. */
+ is_new_style_renaming = 0;
+ for (i = 0; i < nsyms; i += 1)
+ {
+ struct symbol *sym = syms[i].sym;
+ struct block *block = syms[i].block;
+ const char *name;
+ const char *suffix;
+
+ if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF)
+ continue;
+ name = SYMBOL_LINKAGE_NAME (sym);
+ suffix = strstr (name, "___XR");
+
+ if (suffix != NULL)
+ {
+ int name_len = suffix - name;
+ int j;
+ is_new_style_renaming = 1;
+ for (j = 0; j < nsyms; j += 1)
+ if (i != j && syms[j].sym != NULL
+ && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym),
+ name_len) == 0
+ && block == syms[j].block)
+ syms[j].sym = NULL;
+ }
+ }
+ if (is_new_style_renaming)
+ {
+ int j, k;
+
+ for (j = k = 0; j < nsyms; j += 1)
+ if (syms[j].sym != NULL)
+ {
+ syms[k] = syms[j];
+ k += 1;
+ }
+ return k;
+ }
/* Extract the function name associated to CURRENT_BLOCK.
Abort if unable to do so. */
if (current_block == NULL)
return nsyms;
- current_function = block_function (current_block);
+ current_function = block_linkage_function (current_block);
if (current_function == NULL)
return nsyms;
i = 0;
while (i < nsyms)
{
- if (ada_is_object_renaming (syms[i].sym)
- && !renaming_is_visible (syms[i].sym, current_function_name))
+ if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL)
+ == ADA_OBJECT_RENAMING
+ && old_renaming_is_invisible (syms[i].sym, current_function_name))
{
int j;
- for (j = i + 1; j < nsyms; j++)
+ for (j = i + 1; j < nsyms; j += 1)
syms[j - 1] = syms[j];
nsyms -= 1;
}
/* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing
scope and in global scopes, returning the number of matches. Sets
- *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples,
+ *RESULTS to point to a vector of (SYM,BLOCK) tuples,
indicating the symbols found and the blocks and symbol tables (if
any) in which they were found. This vector are transient---good only to
the next call of ada_lookup_symbol_list. Any non-function/non-enumeral
{
block_depth += 1;
ada_add_block_symbols (&symbol_list_obstack, block, name,
- namespace, NULL, NULL, wild_match);
+ namespace, NULL, wild_match);
/* If we found a non-function match, assume that's the one. */
if (is_nonfunction (defns_collected (&symbol_list_obstack, 0),
goto done;
cacheIfUnique = 1;
- if (lookup_cached_symbol (name0, namespace, &sym, &block, &s))
+ if (lookup_cached_symbol (name0, namespace, &sym, &block))
{
if (sym != NULL)
- add_defn_to_vec (&symbol_list_obstack, sym, block, s);
+ add_defn_to_vec (&symbol_list_obstack, sym, block);
goto done;
}
/* Now add symbols from all global blocks: symbol tables, minimal symbol
tables, and psymtab's. */
- ALL_SYMTABS (objfile, s)
+ ALL_PRIMARY_SYMTABS (objfile, s)
{
QUIT;
- if (!s->primary)
- continue;
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block, name, namespace,
- objfile, s, wild_match);
+ objfile, wild_match);
}
if (namespace == VAR_DOMAIN)
if (s != NULL)
{
int ndefns0 = num_defns_collected (&symbol_list_obstack);
+ char *raw_name = SYMBOL_LINKAGE_NAME (msymbol);
+ char *name1;
+ const char *suffix;
QUIT;
+ suffix = strrchr (raw_name, '.');
+ if (suffix == NULL)
+ suffix = strrchr (raw_name, '$');
+ if (suffix != NULL && is_digits_suffix (suffix + 1))
+ {
+ name1 = alloca (suffix - raw_name + 1);
+ strncpy (name1, raw_name, suffix - raw_name);
+ name1[suffix - raw_name] = '\0';
+ }
+ else
+ name1 = raw_name;
+
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block,
- SYMBOL_LINKAGE_NAME (msymbol),
- namespace, objfile, s, wild_match);
+ name1, namespace, objfile, 0);
if (num_defns_collected (&symbol_list_obstack) == ndefns0)
{
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block,
- SYMBOL_LINKAGE_NAME (msymbol),
- namespace, objfile, s,
- wild_match);
+ name1, namespace, objfile, 0);
}
}
}
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block, name,
- namespace, objfile, s, wild_match);
+ namespace, objfile, wild_match);
}
}
if (num_defns_collected (&symbol_list_obstack) == 0)
{
- ALL_SYMTABS (objfile, s)
+ ALL_PRIMARY_SYMTABS (objfile, s)
{
QUIT;
- if (!s->primary)
- continue;
bv = BLOCKVECTOR (s);
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block, name, namespace,
- objfile, s, wild_match);
+ objfile, wild_match);
}
ALL_PSYMTABS (objfile, ps)
continue;
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
ada_add_block_symbols (&symbol_list_obstack, block, name,
- namespace, objfile, s, wild_match);
+ namespace, objfile, wild_match);
}
}
}
ndefns = remove_extra_symbols (*results, ndefns);
if (ndefns == 0)
- cache_symbol (name0, namespace, NULL, NULL, NULL);
+ cache_symbol (name0, namespace, NULL, NULL);
if (ndefns == 1 && cacheIfUnique)
- cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block,
- (*results)[0].symtab);
+ cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block);
- ndefns = remove_out_of_scope_renamings (*results, ndefns,
- (struct block *) block0);
+ ndefns = remove_irrelevant_renamings (*results, ndefns, block0);
return ndefns;
}
+struct symbol *
+ada_lookup_encoded_symbol (const char *name, const struct block *block0,
+ domain_enum namespace, struct block **block_found)
+{
+ struct ada_symbol_info *candidates;
+ int n_candidates;
+
+ n_candidates = ada_lookup_symbol_list (name, block0, namespace, &candidates);
+
+ if (n_candidates == 0)
+ return NULL;
+
+ if (block_found != NULL)
+ *block_found = candidates[0].block;
+
+ return fixup_symbol_section (candidates[0].sym, NULL);
+}
+
/* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing
scope and in global scopes, or NULL if none. NAME is folded and
encoded first. Otherwise, the result is as for ada_lookup_symbol_list,
*IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol
table in which the symbol was found (in both cases, these
assignments occur only if the pointers are non-null). */
-
struct symbol *
ada_lookup_symbol (const char *name, const struct block *block0,
- domain_enum namespace, int *is_a_field_of_this,
- struct symtab **symtab)
+ domain_enum namespace, int *is_a_field_of_this)
{
- struct ada_symbol_info *candidates;
- int n_candidates;
-
- n_candidates = ada_lookup_symbol_list (ada_encode (ada_fold_name (name)),
- block0, namespace, &candidates);
-
- if (n_candidates == 0)
- return NULL;
-
if (is_a_field_of_this != NULL)
*is_a_field_of_this = 0;
- if (symtab != NULL)
- {
- *symtab = candidates[0].symtab;
- if (*symtab == NULL && candidates[0].block != NULL)
- {
- struct objfile *objfile;
- struct symtab *s;
- struct block *b;
- struct blockvector *bv;
-
- /* Search the list of symtabs for one which contains the
- address of the start of this block. */
- ALL_SYMTABS (objfile, s)
- {
- bv = BLOCKVECTOR (s);
- b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- if (BLOCK_START (b) <= BLOCK_START (candidates[0].block)
- && BLOCK_END (b) > BLOCK_START (candidates[0].block))
- {
- *symtab = s;
- return fixup_symbol_section (candidates[0].sym, objfile);
- }
- }
- /* FIXME: brobecker/2004-11-12: I think that we should never
- reach this point. I don't see a reason why we would not
- find a symtab for a given block, so I suggest raising an
- internal_error exception here. Otherwise, we end up
- returning a symbol but no symtab, which certain parts of
- the code that rely (indirectly) on this function do not
- expect, eventually causing a SEGV. */
- return fixup_symbol_section (candidates[0].sym, NULL);
- }
- }
- return candidates[0].sym;
+ return
+ ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)),
+ block0, namespace, NULL);
}
static struct symbol *
ada_lookup_symbol_nonlocal (const char *name,
const char *linkage_name,
const struct block *block,
- const domain_enum domain, struct symtab **symtab)
+ const domain_enum domain)
{
if (linkage_name == NULL)
linkage_name = name;
return ada_lookup_symbol (linkage_name, block_static_block (block), domain,
- NULL, symtab);
+ NULL);
}
/* True iff STR is a possible encoded suffix of a normal Ada name
that is to be ignored for matching purposes. Suffixes of parallel
names (e.g., XVE) are not included here. Currently, the possible suffixes
- are given by either of the regular expression:
+ are given by any of the regular expressions:
- (__[0-9]+)?[.$][0-9]+ [nested subprogram suffix, on platforms such
- as GNU/Linux]
- ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX]
- _E[0-9]+[bs]$ [protected object entry suffixes]
+ [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux]
+ ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX]
+ _E[0-9]+[bs]$ [protected object entry suffixes]
(X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$
- */
+
+ Also, any leading "__[0-9]+" sequence is skipped before the suffix
+ match is performed. This sequence is used to differentiate homonyms,
+ is an optional part of a valid name suffix. */
static int
is_name_suffix (const char *str)
const char *matching;
const int len = strlen (str);
- /* (__[0-9]+)?\.[0-9]+ */
- matching = str;
+ /* Skip optional leading __[0-9]+. */
+
if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2]))
{
- matching += 3;
- while (isdigit (matching[0]))
- matching += 1;
- if (matching[0] == '\0')
- return 1;
+ str += 3;
+ while (isdigit (str[0]))
+ str += 1;
}
+
+ /* [.$][0-9]+ */
- if (matching[0] == '.' || matching[0] == '$')
+ if (str[0] == '.' || str[0] == '$')
{
- matching += 1;
+ matching = str + 1;
while (isdigit (matching[0]))
matching += 1;
if (matching[0] == '\0')
}
/* ___[0-9]+ */
+
if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_')
{
matching = str + 3;
str += 1;
}
}
+
if (str[0] == '\000')
return 1;
+
if (str[0] == '_')
{
if (str[1] != '_' || str[2] == '\000')
return 0;
}
-/* Return nonzero if the given string starts with a dot ('.')
- followed by zero or more digits.
-
- Note: brobecker/2003-11-10: A forward declaration has not been
- added at the begining of this file yet, because this function
- is only used to work around a problem found during wild matching
- when trying to match minimal symbol names against symbol names
- obtained from dwarf-2 data. This function is therefore currently
- only used in wild_match() and is likely to be deleted when the
- problem in dwarf-2 is fixed. */
+/* Return nonzero if the given string contains only digits.
+ The empty string also matches. */
static int
-is_dot_digits_suffix (const char *str)
+is_digits_suffix (const char *str)
{
- if (str[0] != '.')
- return 0;
-
- str++;
while (isdigit (str[0]))
str++;
return (str[0] == '\0');
}
-/* Return non-zero if NAME0 is a valid match when doing wild matching.
- Certain symbols appear at first to match, except that they turn out
- not to follow the Ada encoding and hence should not be used as a wild
- match of a given pattern. */
+/* Return non-zero if the string starting at NAME and ending before
+ NAME_END contains no capital letters. */
static int
is_valid_name_for_wild_match (const char *name0)
const char *decoded_name = ada_decode (name0);
int i;
+ /* If the decoded name starts with an angle bracket, it means that
+ NAME0 does not follow the GNAT encoding format. It should then
+ not be allowed as a possible wild match. */
+ if (decoded_name[0] == '<')
+ return 0;
+
for (i=0; decoded_name[i] != '\0'; i++)
if (isalpha (decoded_name[i]) && !islower (decoded_name[i]))
return 0;
static int
wild_match (const char *patn0, int patn_len, const char *name0)
{
- int name_len;
- char *name;
- char *patn;
-
- /* FIXME: brobecker/2003-11-10: For some reason, the symbol name
- stored in the symbol table for nested function names is sometimes
- different from the name of the associated entity stored in
- the dwarf-2 data: This is the case for nested subprograms, where
- the minimal symbol name contains a trailing ".[:digit:]+" suffix,
- while the symbol name from the dwarf-2 data does not.
-
- Although the DWARF-2 standard documents that entity names stored
- in the dwarf-2 data should be identical to the name as seen in
- the source code, GNAT takes a different approach as we already use
- a special encoding mechanism to convey the information so that
- a C debugger can still use the information generated to debug
- Ada programs. A corollary is that the symbol names in the dwarf-2
- data should match the names found in the symbol table. I therefore
- consider this issue as a compiler defect.
-
- Until the compiler is properly fixed, we work-around the problem
- by ignoring such suffixes during the match. We do so by making
- a copy of PATN0 and NAME0, and then by stripping such a suffix
- if present. We then perform the match on the resulting strings. */
- {
- char *dot;
- name_len = strlen (name0);
-
- name = (char *) alloca ((name_len + 1) * sizeof (char));
- strcpy (name, name0);
- dot = strrchr (name, '.');
- if (dot != NULL && is_dot_digits_suffix (dot))
- *dot = '\0';
-
- patn = (char *) alloca ((patn_len + 1) * sizeof (char));
- strncpy (patn, patn0, patn_len);
- patn[patn_len] = '\0';
- dot = strrchr (patn, '.');
- if (dot != NULL && is_dot_digits_suffix (dot))
- {
- *dot = '\0';
- patn_len = dot - patn;
- }
- }
-
- /* Now perform the wild match. */
-
- name_len = strlen (name);
- if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0
- && strncmp (patn, name + 5, patn_len) == 0
- && is_name_suffix (name + patn_len + 5))
- return 1;
-
- while (name_len >= patn_len)
+ char* match;
+ const char* start;
+ start = name0;
+ while (1)
{
- if (strncmp (patn, name, patn_len) == 0
- && is_name_suffix (name + patn_len))
- return (is_valid_name_for_wild_match (name0));
- do
- {
- name += 1;
- name_len -= 1;
- }
- while (name_len > 0
- && name[0] != '.' && (name[0] != '_' || name[1] != '_'));
- if (name_len <= 0)
- return 0;
- if (name[0] == '_')
- {
- if (!islower (name[2]))
- return 0;
- name += 2;
- name_len -= 2;
- }
- else
- {
- if (!islower (name[1]))
- return 0;
- name += 1;
- name_len -= 1;
- }
+ match = strstr (start, patn0);
+ if (match == NULL)
+ return 0;
+ if ((match == name0
+ || match[-1] == '.'
+ || (match > name0 + 1 && match[-1] == '_' && match[-2] == '_')
+ || (match == name0 + 5 && strncmp ("_ada_", name0, 5) == 0))
+ && is_name_suffix (match + patn_len))
+ return (match == name0 || is_valid_name_for_wild_match (name0));
+ start = match + 1;
}
-
- return 0;
}
ada_add_block_symbols (struct obstack *obstackp,
struct block *block, const char *name,
domain_enum domain, struct objfile *objfile,
- struct symtab *symtab, int wild)
+ int wild)
{
struct dict_iterator iter;
int name_len = strlen (name);
struct symbol *sym;
ALL_BLOCK_SYMBOLS (block, iter, sym)
{
- if (SYMBOL_DOMAIN (sym) == domain
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), domain)
&& wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym)))
{
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- case LOC_COMPUTED_ARG:
- arg_sym = sym;
- break;
- case LOC_UNRESOLVED:
- continue;
- default:
+ if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED)
+ continue;
+ else if (SYMBOL_IS_ARGUMENT (sym))
+ arg_sym = sym;
+ else
+ {
found_sym = 1;
add_defn_to_vec (obstackp,
fixup_symbol_section (sym, objfile),
- block, symtab);
- break;
+ block);
}
}
}
{
ALL_BLOCK_SYMBOLS (block, iter, sym)
{
- if (SYMBOL_DOMAIN (sym) == domain)
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), domain))
{
int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len);
if (cmp == 0
&& is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len))
{
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- case LOC_COMPUTED_ARG:
- arg_sym = sym;
- break;
- case LOC_UNRESOLVED:
- break;
- default:
- found_sym = 1;
- add_defn_to_vec (obstackp,
- fixup_symbol_section (sym, objfile),
- block, symtab);
- break;
- }
+ if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED)
+ {
+ if (SYMBOL_IS_ARGUMENT (sym))
+ arg_sym = sym;
+ else
+ {
+ found_sym = 1;
+ add_defn_to_vec (obstackp,
+ fixup_symbol_section (sym, objfile),
+ block);
+ }
+ }
}
}
}
{
add_defn_to_vec (obstackp,
fixup_symbol_section (arg_sym, objfile),
- block, symtab);
+ block);
}
if (!wild)
ALL_BLOCK_SYMBOLS (block, iter, sym)
{
- if (SYMBOL_DOMAIN (sym) == domain)
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), domain))
{
int cmp;
if (cmp == 0
&& is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5))
{
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- case LOC_COMPUTED_ARG:
- arg_sym = sym;
- break;
- case LOC_UNRESOLVED:
- break;
- default:
- found_sym = 1;
- add_defn_to_vec (obstackp,
- fixup_symbol_section (sym, objfile),
- block, symtab);
- break;
- }
+ if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED)
+ {
+ if (SYMBOL_IS_ARGUMENT (sym))
+ arg_sym = sym;
+ else
+ {
+ found_sym = 1;
+ add_defn_to_vec (obstackp,
+ fixup_symbol_section (sym, objfile),
+ block);
+ }
+ }
}
}
}
{
add_defn_to_vec (obstackp,
fixup_symbol_section (arg_sym, objfile),
- block, symtab);
+ block);
}
}
}
\f
+
+ /* Symbol Completion */
+
+/* If SYM_NAME is a completion candidate for TEXT, return this symbol
+ name in a form that's appropriate for the completion. The result
+ does not need to be deallocated, but is only good until the next call.
+
+ TEXT_LEN is equal to the length of TEXT.
+ Perform a wild match if WILD_MATCH is set.
+ ENCODED should be set if TEXT represents the start of a symbol name
+ in its encoded form. */
+
+static const char *
+symbol_completion_match (const char *sym_name,
+ const char *text, int text_len,
+ int wild_match, int encoded)
+{
+ char *result;
+ const int verbatim_match = (text[0] == '<');
+ int match = 0;
+
+ if (verbatim_match)
+ {
+ /* Strip the leading angle bracket. */
+ text = text + 1;
+ text_len--;
+ }
+
+ /* First, test against the fully qualified name of the symbol. */
+
+ if (strncmp (sym_name, text, text_len) == 0)
+ match = 1;
+
+ if (match && !encoded)
+ {
+ /* One needed check before declaring a positive match is to verify
+ that iff we are doing a verbatim match, the decoded version
+ of the symbol name starts with '<'. Otherwise, this symbol name
+ is not a suitable completion. */
+ const char *sym_name_copy = sym_name;
+ int has_angle_bracket;
+
+ sym_name = ada_decode (sym_name);
+ has_angle_bracket = (sym_name[0] == '<');
+ match = (has_angle_bracket == verbatim_match);
+ sym_name = sym_name_copy;
+ }
+
+ if (match && !verbatim_match)
+ {
+ /* When doing non-verbatim match, another check that needs to
+ be done is to verify that the potentially matching symbol name
+ does not include capital letters, because the ada-mode would
+ not be able to understand these symbol names without the
+ angle bracket notation. */
+ const char *tmp;
+
+ for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++);
+ if (*tmp != '\0')
+ match = 0;
+ }
+
+ /* Second: Try wild matching... */
+
+ if (!match && wild_match)
+ {
+ /* Since we are doing wild matching, this means that TEXT
+ may represent an unqualified symbol name. We therefore must
+ also compare TEXT against the unqualified name of the symbol. */
+ sym_name = ada_unqualified_name (ada_decode (sym_name));
+
+ if (strncmp (sym_name, text, text_len) == 0)
+ match = 1;
+ }
+
+ /* Finally: If we found a mach, prepare the result to return. */
+
+ if (!match)
+ return NULL;
+
+ if (verbatim_match)
+ sym_name = add_angle_brackets (sym_name);
+
+ if (!encoded)
+ sym_name = ada_decode (sym_name);
+
+ return sym_name;
+}
+
+typedef char *char_ptr;
+DEF_VEC_P (char_ptr);
+
+/* A companion function to ada_make_symbol_completion_list().
+ Check if SYM_NAME represents a symbol which name would be suitable
+ to complete TEXT (TEXT_LEN is the length of TEXT), in which case
+ it is appended at the end of the given string vector SV.
+
+ ORIG_TEXT is the string original string from the user command
+ that needs to be completed. WORD is the entire command on which
+ completion should be performed. These two parameters are used to
+ determine which part of the symbol name should be added to the
+ completion vector.
+ if WILD_MATCH is set, then wild matching is performed.
+ ENCODED should be set if TEXT represents a symbol name in its
+ encoded formed (in which case the completion should also be
+ encoded). */
+
+static void
+symbol_completion_add (VEC(char_ptr) **sv,
+ const char *sym_name,
+ const char *text, int text_len,
+ const char *orig_text, const char *word,
+ int wild_match, int encoded)
+{
+ const char *match = symbol_completion_match (sym_name, text, text_len,
+ wild_match, encoded);
+ char *completion;
+
+ if (match == NULL)
+ return;
+
+ /* We found a match, so add the appropriate completion to the given
+ string vector. */
+
+ if (word == orig_text)
+ {
+ completion = xmalloc (strlen (match) + 5);
+ strcpy (completion, match);
+ }
+ else if (word > orig_text)
+ {
+ /* Return some portion of sym_name. */
+ completion = xmalloc (strlen (match) + 5);
+ strcpy (completion, match + (word - orig_text));
+ }
+ else
+ {
+ /* Return some of ORIG_TEXT plus sym_name. */
+ completion = xmalloc (strlen (match) + (orig_text - word) + 5);
+ strncpy (completion, word, orig_text - word);
+ completion[orig_text - word] = '\0';
+ strcat (completion, match);
+ }
+
+ VEC_safe_push (char_ptr, *sv, completion);
+}
+
+/* Return a list of possible symbol names completing TEXT0. The list
+ is NULL terminated. WORD is the entire command on which completion
+ is made. */
+
+static char **
+ada_make_symbol_completion_list (char *text0, char *word)
+{
+ char *text;
+ int text_len;
+ int wild_match;
+ int encoded;
+ VEC(char_ptr) *completions = VEC_alloc (char_ptr, 128);
+ struct symbol *sym;
+ struct symtab *s;
+ struct partial_symtab *ps;
+ struct minimal_symbol *msymbol;
+ struct objfile *objfile;
+ struct block *b, *surrounding_static_block = 0;
+ int i;
+ struct dict_iterator iter;
+
+ if (text0[0] == '<')
+ {
+ text = xstrdup (text0);
+ make_cleanup (xfree, text);
+ text_len = strlen (text);
+ wild_match = 0;
+ encoded = 1;
+ }
+ else
+ {
+ text = xstrdup (ada_encode (text0));
+ make_cleanup (xfree, text);
+ text_len = strlen (text);
+ for (i = 0; i < text_len; i++)
+ text[i] = tolower (text[i]);
+
+ encoded = (strstr (text0, "__") != NULL);
+ /* If the name contains a ".", then the user is entering a fully
+ qualified entity name, and the match must not be done in wild
+ mode. Similarly, if the user wants to complete what looks like
+ an encoded name, the match must not be done in wild mode. */
+ wild_match = (strchr (text0, '.') == NULL && !encoded);
+ }
+
+ /* First, look at the partial symtab symbols. */
+ ALL_PSYMTABS (objfile, ps)
+ {
+ struct partial_symbol **psym;
+
+ /* If the psymtab's been read in we'll get it when we search
+ through the blockvector. */
+ if (ps->readin)
+ continue;
+
+ for (psym = objfile->global_psymbols.list + ps->globals_offset;
+ psym < (objfile->global_psymbols.list + ps->globals_offset
+ + ps->n_global_syms); psym++)
+ {
+ QUIT;
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym),
+ text, text_len, text0, word,
+ wild_match, encoded);
+ }
+
+ for (psym = objfile->static_psymbols.list + ps->statics_offset;
+ psym < (objfile->static_psymbols.list + ps->statics_offset
+ + ps->n_static_syms); psym++)
+ {
+ QUIT;
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym),
+ text, text_len, text0, word,
+ wild_match, encoded);
+ }
+ }
+
+ /* At this point scan through the misc symbol vectors and add each
+ symbol you find to the list. Eventually we want to ignore
+ anything that isn't a text symbol (everything else will be
+ handled by the psymtab code above). */
+
+ ALL_MSYMBOLS (objfile, msymbol)
+ {
+ QUIT;
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (msymbol),
+ text, text_len, text0, word, wild_match, encoded);
+ }
+
+ /* Search upwards from currently selected frame (so that we can
+ complete on local vars. */
+
+ for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
+ {
+ if (!BLOCK_SUPERBLOCK (b))
+ surrounding_static_block = b; /* For elmin of dups */
+
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
+ {
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym),
+ text, text_len, text0, word,
+ wild_match, encoded);
+ }
+ }
+
+ /* Go through the symtabs and check the externs and statics for
+ symbols which match. */
+
+ ALL_SYMTABS (objfile, s)
+ {
+ QUIT;
+ b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
+ {
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym),
+ text, text_len, text0, word,
+ wild_match, encoded);
+ }
+ }
+
+ ALL_SYMTABS (objfile, s)
+ {
+ QUIT;
+ b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
+ /* Don't do this block twice. */
+ if (b == surrounding_static_block)
+ continue;
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
+ {
+ symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym),
+ text, text_len, text0, word,
+ wild_match, encoded);
+ }
+ }
+
+ /* Append the closing NULL entry. */
+ VEC_safe_push (char_ptr, completions, NULL);
+
+ /* Make a copy of the COMPLETIONS VEC before we free it, and then
+ return the copy. It's unfortunate that we have to make a copy
+ of an array that we're about to destroy, but there is nothing much
+ we can do about it. Fortunately, it's typically not a very large
+ array. */
+ {
+ const size_t completions_size =
+ VEC_length (char_ptr, completions) * sizeof (char *);
+ char **result = malloc (completions_size);
+
+ memcpy (result, VEC_address (char_ptr, completions), completions_size);
+
+ VEC_free (char_ptr, completions);
+ return result;
+ }
+}
+
/* Field Access */
+/* Return non-zero if TYPE is a pointer to the GNAT dispatch table used
+ for tagged types. */
+
+static int
+ada_is_dispatch_table_ptr_type (struct type *type)
+{
+ char *name;
+
+ if (TYPE_CODE (type) != TYPE_CODE_PTR)
+ return 0;
+
+ name = TYPE_NAME (TYPE_TARGET_TYPE (type));
+ if (name == NULL)
+ return 0;
+
+ return (strcmp (name, "ada__tags__dispatch_table") == 0);
+}
+
/* True if field number FIELD_NUM in struct or union type TYPE is supposed
to be invisible to users. */
{
if (field_num < 0 || field_num > TYPE_NFIELDS (type))
return 1;
- else
- {
- const char *name = TYPE_FIELD_NAME (type, field_num);
- return (name == NULL
- || (name[0] == '_' && strncmp (name, "_parent", 7) != 0));
- }
+
+ /* Check the name of that field. */
+ {
+ const char *name = TYPE_FIELD_NAME (type, field_num);
+
+ /* Anonymous field names should not be printed.
+ brobecker/2007-02-20: I don't think this can actually happen
+ but we don't want to print the value of annonymous fields anyway. */
+ if (name == NULL)
+ return 1;
+
+ /* A field named "_parent" is internally generated by GNAT for
+ tagged types, and should not be printed either. */
+ if (name[0] == '_' && strncmp (name, "_parent", 7) != 0)
+ return 1;
+ }
+
+ /* If this is the dispatch table of a tagged type, then ignore. */
+ if (ada_is_tagged_type (type, 1)
+ && ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num)))
+ return 1;
+
+ /* Not a special field, so it should not be ignored. */
+ return 0;
}
/* True iff TYPE has a tag field. If REFOK, then TYPE may also be a
valp = value_cast (info_type, args->tag);
if (valp == NULL)
return 0;
- val = value_ind (value_add (valp, value_from_longest (builtin_type_int, -1)));
+ val = value_ind (value_ptradd (valp,
+ value_from_longest (builtin_type_int8, -1)));
if (val == NULL)
return 0;
val = ada_value_struct_elt (val, "expanded_name", 1);
for (i = 0; i < TYPE_NFIELDS (type); i += 1)
if (ada_is_parent_field (type, i))
- return ada_check_typedef (TYPE_FIELD_TYPE (type, i));
+ {
+ struct type *parent_type = TYPE_FIELD_TYPE (type, i);
+
+ /* If the _parent field is a pointer, then dereference it. */
+ if (TYPE_CODE (parent_type) == TYPE_CODE_PTR)
+ parent_type = TYPE_TARGET_TYPE (parent_type);
+ /* If there is a parallel XVS type, get the actual base type. */
+ parent_type = ada_get_base_type (parent_type);
+
+ return ada_check_typedef (parent_type);
+ }
return NULL;
}
if (field_type_p != NULL)
*field_type_p = NULL;
if (byte_offset_p != NULL)
- *byte_offset_p;
+ *byte_offset_p = 0;
if (bit_offset_p != NULL)
*bit_offset_p = 0;
if (bit_size_p != NULL)
else
address = unpack_pointer (t, value_contents (arg));
- t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL);
+ t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1);
if (find_struct_field (name, t1, 0,
&field_type, &byte_offset, &bit_offset,
&bit_size, NULL))
{
int others_clause;
int i;
- int disp;
- struct type *discrim_type;
char *discrim_name = ada_variant_discrim_name (var_type);
+ struct value *outer;
+ struct value *discrim;
LONGEST discrim_val;
- disp = 0;
- discrim_type =
- ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp);
- if (discrim_type == NULL)
+ outer = value_from_contents_and_address (outer_type, outer_valaddr, 0);
+ discrim = ada_value_struct_elt (outer, discrim_name, 1);
+ if (discrim == NULL)
return -1;
- discrim_val = unpack_long (discrim_type, outer_valaddr + disp);
+ discrim_val = value_as_long (discrim);
others_clause = -1;
for (i = 0; i < TYPE_NFIELDS (var_type); i += 1)
field_alignment (struct type *type, int f)
{
const char *name = TYPE_FIELD_NAME (type, f);
- int len = (name == NULL) ? 0 : strlen (name);
+ int len;
int align_offset;
+ /* The field name should never be null, unless the debugging information
+ is somehow malformed. In this case, we assume the field does not
+ require any alignment. */
+ if (name == NULL)
+ return 1;
+
+ len = strlen (name);
+
if (!isdigit (name[len - 1]))
return 1;
return NULL;
}
-/* Given a symbol NAME and its associated BLOCK, search all symbols
- for its ___XR counterpart, which is the ``renaming'' symbol
+/* Given NAME and an associated BLOCK, search all symbols for
+ NAME suffixed with "___XR", which is the ``renaming'' symbol
associated to NAME. Return this symbol if found, return
NULL otherwise. */
struct symbol *
ada_find_renaming_symbol (const char *name, struct block *block)
{
- const struct symbol *function_sym = block_function (block);
+ struct symbol *sym;
+
+ sym = find_old_style_renaming_symbol (name, block);
+
+ if (sym != NULL)
+ return sym;
+
+ /* Not right yet. FIXME pnh 7/20/2007. */
+ sym = ada_find_any_symbol (name);
+ if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL)
+ return sym;
+ else
+ return NULL;
+}
+
+static struct symbol *
+find_old_style_renaming_symbol (const char *name, struct block *block)
+{
+ const struct symbol *function_sym = block_linkage_function (block);
char *rename;
if (function_sym != NULL)
/* Library-level functions are a special case, as GNAT adds
a ``_ada_'' prefix to the function name to avoid namespace
- pollution. However, the renaming symbol themselves do not
+ pollution. However, the renaming symbols themselves do not
have this prefix, so we need to skip this prefix if present. */
if (function_name_len > 5 /* "_ada_" */
&& strstr (function_name, "_ada_") == function_name)
else if (ada_is_array_descriptor_type (type0)
&& !ada_is_array_descriptor_type (type1))
return 1;
- else if (ada_renaming_type (type0) != NULL
- && ada_renaming_type (type1) == NULL)
- return 1;
+ else
+ {
+ const char *type0_name = type_name_no_tag (type0);
+ const char *type1_name = type_name_no_tag (type1);
+
+ if (type0_name != NULL && strstr (type0_name, "___XR") != NULL
+ && (type1_name == NULL || strstr (type1_name, "___XR") == NULL))
+ return 1;
+ }
return 0;
}
TYPE_FIELDS (type) = NULL;
TYPE_NAME (type) = "<empty>";
TYPE_TAG_NAME (type) = NULL;
- TYPE_FLAGS (type) = 0;
TYPE_LENGTH (type) = 0;
return type;
}
memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields);
TYPE_NAME (rtype) = ada_type_name (type);
TYPE_TAG_NAME (rtype) = NULL;
- TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (rtype) = 1;
off = 0;
bit_len = 0;
else
dval = dval0;
+ /* Get the fixed type of the field. Note that, in this case, we
+ do not want to get the real type out of the tag: if the current
+ field is the parent part of a tagged record, we will get the
+ tag of the object. Clearly wrong: the real type of the parent
+ is not the real type of the child. We would end up in an infinite
+ loop. */
TYPE_FIELD_TYPE (rtype, f) =
ada_to_fixed_type
(ada_get_base_type
(TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))),
cond_offset_host (valaddr, off / TARGET_CHAR_BIT),
- cond_offset_target (address, off / TARGET_CHAR_BIT), dval);
+ cond_offset_target (address, off / TARGET_CHAR_BIT), dval, 0);
TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f);
bit_incr = fld_bit_len =
TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT;
if (is_dynamic_field (type0, f))
new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type));
else
- new_type = to_static_fixed_type (field_type);
+ new_type = static_unwrap_type (field_type);
if (type == type0 && new_type != field_type)
{
TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0));
sizeof (struct field) * nfields);
TYPE_NAME (type) = ada_type_name (type0);
TYPE_TAG_NAME (type) = NULL;
- TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (type) = 1;
TYPE_LENGTH (type) = 0;
}
TYPE_FIELD_TYPE (type, f) = new_type;
}
/* Given an object of type TYPE whose contents are at VALADDR and
- whose address in memory is ADDRESS, returns a revision of TYPE --
- a non-dynamic-sized record with a variant part -- in which
- the variant part is replaced with the appropriate branch. Looks
+ whose address in memory is ADDRESS, returns a revision of TYPE,
+ which should be a non-dynamic-sized record, in which the variant
+ part, if any, is replaced with the appropriate branch. Looks
for discriminant values in DVAL0, which can be NULL if the record
contains the necessary discriminant values. */
sizeof (struct field) * nfields);
TYPE_NAME (rtype) = ada_type_name (type);
TYPE_TAG_NAME (rtype) = NULL;
- TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (rtype) = 1;
TYPE_LENGTH (rtype) = TYPE_LENGTH (type);
branch_type = to_fixed_variant_branch_type
{
struct type *templ_type;
- if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)
+ if (TYPE_FIXED_INSTANCE (type0))
return type0;
templ_type = dynamic_template_type (type0);
}
else
{
- TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (type0) = 1;
return type0;
}
struct type *result;
if (ada_is_packed_array_type (type0) /* revisit? */
- || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE))
+ || TYPE_FIXED_INSTANCE (type0))
return type0;
index_type_desc = ada_find_parallel_type (type0, "___XA");
the elements of an array of a tagged type should all be of
the same type specified in the debugging info. No need to
consult the object tag. */
- struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval);
+ struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1);
if (elt_type0 == elt_type)
result = type0;
the elements of an array of a tagged type should all be of
the same type specified in the debugging info. No need to
consult the object tag. */
- result = ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval);
+ result =
+ ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1);
for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1)
{
struct type *range_type =
error (_("array type with dynamic size is larger than varsize-limit"));
}
- TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE;
+ TYPE_FIXED_INSTANCE (result) = 1;
return result;
}
and may be NULL if there are none, or if the object of type TYPE at
ADDRESS or in VALADDR contains these discriminants.
- In the case of tagged types, this function attempts to locate the object's
- tag and use it to compute the actual type. However, when ADDRESS is null,
- we cannot use it to determine the location of the tag, and therefore
- compute the tagged type's actual type. So we return the tagged type
- without consulting the tag. */
+ If CHECK_TAG is not null, in the case of tagged types, this function
+ attempts to locate the object's tag and use it to compute the actual
+ type. However, when ADDRESS is null, we cannot use it to determine the
+ location of the tag, and therefore compute the tagged type's actual type.
+ So we return the tagged type without consulting the tag. */
-struct type *
-ada_to_fixed_type (struct type *type, const gdb_byte *valaddr,
- CORE_ADDR address, struct value *dval)
+static struct type *
+ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr,
+ CORE_ADDR address, struct value *dval, int check_tag)
{
type = ada_check_typedef (type);
switch (TYPE_CODE (type))
case TYPE_CODE_STRUCT:
{
struct type *static_type = to_static_fixed_type (type);
-
+ struct type *fixed_record_type =
+ to_fixed_record_type (type, valaddr, address, NULL);
/* If STATIC_TYPE is a tagged type and we know the object's address,
then we can determine its tag, and compute the object's actual
- type from there. */
+ type from there. Note that we have to use the fixed record
+ type (the parent part of the record may have dynamic fields
+ and the way the location of _tag is expressed may depend on
+ them). */
- if (address != 0 && ada_is_tagged_type (static_type, 0))
+ if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0))
{
struct type *real_type =
- type_from_tag (value_tag_from_contents_and_address (static_type,
- valaddr,
- address));
+ type_from_tag (value_tag_from_contents_and_address
+ (fixed_record_type,
+ valaddr,
+ address));
if (real_type != NULL)
- type = real_type;
+ return to_fixed_record_type (real_type, valaddr, address, NULL);
}
- return to_fixed_record_type (type, valaddr, address, NULL);
+ return fixed_record_type;
}
case TYPE_CODE_ARRAY:
return to_fixed_array_type (type, dval, 1);
}
}
+/* The same as ada_to_fixed_type_1, except that it preserves the type
+ if it is a TYPE_CODE_TYPEDEF of a type that is already fixed.
+ ada_to_fixed_type_1 would return the type referenced by TYPE. */
+
+struct type *
+ada_to_fixed_type (struct type *type, const gdb_byte *valaddr,
+ CORE_ADDR address, struct value *dval, int check_tag)
+
+{
+ struct type *fixed_type =
+ ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag);
+
+ if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF
+ && TYPE_TARGET_TYPE (type) == fixed_type)
+ return type;
+
+ return fixed_type;
+}
+
/* A standard (static-sized) type corresponding as well as possible to
TYPE0, but based on no runtime data. */
if (type0 == NULL)
return NULL;
- if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)
+ if (TYPE_FIXED_INSTANCE (type0))
return type0;
type0 = ada_check_typedef (type0);
struct type *
ada_check_typedef (struct type *type)
{
+ if (type == NULL)
+ return NULL;
+
CHECK_TYPEDEF (type);
if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM
|| !TYPE_STUB (type)
ada_to_fixed_value_create (struct type *type0, CORE_ADDR address,
struct value *val0)
{
- struct type *type = ada_to_fixed_type (type0, 0, address, NULL);
+ struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1);
if (type == type0 && val0 != NULL)
return val0;
else
static LONGEST
pos_atr (struct value *arg)
{
- struct type *type = value_type (arg);
+ struct value *val = coerce_ref (arg);
+ struct type *type = value_type (val);
if (!discrete_type_p (type))
error (_("'POS only defined on discrete types"));
if (TYPE_CODE (type) == TYPE_CODE_ENUM)
{
int i;
- LONGEST v = value_as_long (arg);
+ LONGEST v = value_as_long (val);
for (i = 0; i < TYPE_NFIELDS (type); i += 1)
{
error (_("enumeration value is invalid: can't find 'POS"));
}
else
- return value_as_long (arg);
+ return value_as_long (val);
}
static struct value *
int
ada_is_character_type (struct type *type)
{
- const char *name = ada_type_name (type);
- return
- name != NULL
- && (TYPE_CODE (type) == TYPE_CODE_CHAR
- || TYPE_CODE (type) == TYPE_CODE_INT
- || TYPE_CODE (type) == TYPE_CODE_RANGE)
- && (strcmp (name, "character") == 0
- || strcmp (name, "wide_character") == 0
- || strcmp (name, "unsigned char") == 0);
+ const char *name;
+
+ /* If the type code says it's a character, then assume it really is,
+ and don't check any further. */
+ if (TYPE_CODE (type) == TYPE_CODE_CHAR)
+ return 1;
+
+ /* Otherwise, assume it's a character type iff it is a discrete type
+ with a known character type name. */
+ name = ada_type_name (type);
+ return (name != NULL
+ && (TYPE_CODE (type) == TYPE_CODE_INT
+ || TYPE_CODE (type) == TYPE_CODE_RANGE)
+ && (strcmp (name, "character") == 0
+ || strcmp (name, "wide_character") == 0
+ || strcmp (name, "wide_wide_character") == 0
+ || strcmp (name, "unsigned char") == 0));
}
/* True if TYPE appears to be an Ada string type. */
struct type *type = ada_check_typedef (value_type (val));
if (ada_is_aligner_type (type))
{
- struct value *v = value_struct_elt (&val, NULL, "F",
- NULL, "internal structure");
+ struct value *v = ada_value_struct_elt (val, "F", 0);
struct type *val_type = ada_check_typedef (value_type (v));
if (ada_type_name (val_type) == NULL)
TYPE_NAME (val_type) = ada_type_name (type);
coerce_unspec_val_to_type
(val, ada_to_fixed_type (raw_real_type, 0,
VALUE_ADDRESS (val) + value_offset (val),
- NULL));
+ NULL, 1));
}
}
if (ada_is_direct_array_type (value_type (arg1))
|| ada_is_direct_array_type (value_type (arg2)))
{
+ /* Automatically dereference any array reference before
+ we attempt to perform the comparison. */
+ arg1 = ada_coerce_ref (arg1);
+ arg2 = ada_coerce_ref (arg2);
+
arg1 = ada_coerce_to_simple_array (arg1);
arg2 = ada_coerce_to_simple_array (arg2);
if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY
indices[i + 1] = high;
}
+/* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2
+ is different. */
+
static struct value *
-ada_evaluate_subexp (struct type *expect_type, struct expression *exp,
- int *pos, enum noside noside)
+ada_value_cast (struct type *type, struct value *arg2, enum noside noside)
{
- enum exp_opcode op;
+ if (type == ada_check_typedef (value_type (arg2)))
+ return arg2;
+
+ if (ada_is_fixed_point_type (type))
+ return (cast_to_fixed (type, arg2));
+
+ if (ada_is_fixed_point_type (value_type (arg2)))
+ return value_cast (type, cast_from_fixed_to_double (arg2));
+
+ return value_cast (type, arg2);
+}
+
+static struct value *
+ada_evaluate_subexp (struct type *expect_type, struct expression *exp,
+ int *pos, enum noside noside)
+{
+ enum exp_opcode op;
int tem, tem2, tem3;
int pc;
struct value *arg1 = NULL, *arg2 = NULL, *arg3;
{
default:
*pos -= 1;
- return
- unwrap_value (evaluate_subexp_standard
- (expect_type, exp, pos, noside));
+ arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
+ arg1 = unwrap_value (arg1);
+
+ /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided,
+ then we need to perform the conversion manually, because
+ evaluate_subexp_standard doesn't do it. This conversion is
+ necessary in Ada because the different kinds of float/fixed
+ types in Ada have different representations.
+
+ Similarly, we need to perform the conversion from OP_LONG
+ ourselves. */
+ if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL)
+ arg1 = ada_value_cast (expect_type, arg1, noside);
+
+ return arg1;
case OP_STRING:
{
arg1 = evaluate_subexp (type, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- if (type != ada_check_typedef (value_type (arg1)))
- {
- if (ada_is_fixed_point_type (type))
- arg1 = cast_to_fixed (type, arg1);
- else if (ada_is_fixed_point_type (value_type (arg1)))
- arg1 = value_cast (type, cast_from_fixed_to_double (arg1));
- else if (VALUE_LVAL (arg1) == lval_memory)
- {
- /* This is in case of the really obscure (and undocumented,
- but apparently expected) case of (Foo) Bar.all, where Bar
- is an integer constant and Foo is a dynamic-sized type.
- If we don't do this, ARG1 will simply be relabeled with
- TYPE. */
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (to_static_fixed_type (type), not_lval);
- arg1 =
- ada_to_fixed_value_create
- (type, VALUE_ADDRESS (arg1) + value_offset (arg1), 0);
- }
- else
- arg1 = value_cast (type, arg1);
- }
+ arg1 = ada_value_cast (type, arg1, noside);
return arg1;
case UNOP_QUAL:
return arg1;
return ada_value_assign (arg1, arg1);
}
- arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
+ /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1,
+ except if the lhs of our assignment is a convenience variable.
+ In the case of assigning to a convenience variable, the lhs
+ should be exactly the result of the evaluation of the rhs. */
+ type = value_type (arg1);
+ if (VALUE_LVAL (arg1) == lval_internalvar)
+ type = NULL;
+ arg2 = evaluate_subexp (type, exp, pos, noside);
if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
return arg1;
if (ada_is_fixed_point_type (value_type (arg1)))
arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
+ if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR)
+ return (value_from_longest
+ (value_type (arg1),
+ value_as_long (arg1) + value_as_long (arg2)));
if ((ada_is_fixed_point_type (value_type (arg1))
|| ada_is_fixed_point_type (value_type (arg2)))
&& value_type (arg1) != value_type (arg2))
error (_("Operands of fixed-point addition must have the same type"));
- return value_cast (value_type (arg1), value_add (arg1, arg2));
+ /* Do the addition, and cast the result to the type of the first
+ argument. We cannot cast the result to a reference type, so if
+ ARG1 is a reference type, find its underlying type. */
+ type = value_type (arg1);
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
+ type = TYPE_TARGET_TYPE (type);
+ return value_cast (type, value_binop (arg1, arg2, BINOP_ADD));
case BINOP_SUB:
arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
+ if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR)
+ return (value_from_longest
+ (value_type (arg1),
+ value_as_long (arg1) - value_as_long (arg2)));
if ((ada_is_fixed_point_type (value_type (arg1))
|| ada_is_fixed_point_type (value_type (arg2)))
&& value_type (arg1) != value_type (arg2))
error (_("Operands of fixed-point subtraction must have the same type"));
- return value_cast (value_type (arg1), value_sub (arg1, arg2));
+ /* Do the substraction, and cast the result to the type of the first
+ argument. We cannot cast the result to a reference type, so if
+ ARG1 is a reference type, find its underlying type. */
+ type = value_type (arg1);
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
+ type = TYPE_TARGET_TYPE (type);
+ return value_cast (type, value_binop (arg1, arg2, BINOP_SUB));
case BINOP_MUL:
case BINOP_DIV:
tem = ada_value_equal (arg1, arg2);
if (op == BINOP_NOTEQUAL)
tem = !tem;
- return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
+ return value_from_longest (type, (LONGEST) tem);
case UNOP_NEG:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
else
return value_neg (arg1);
+ case BINOP_LOGICAL_AND:
+ case BINOP_LOGICAL_OR:
+ case UNOP_LOGICAL_NOT:
+ {
+ struct value *val;
+
+ *pos -= 1;
+ val = evaluate_subexp_standard (expect_type, exp, pos, noside);
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
+ return value_cast (type, val);
+ }
+
+ case BINOP_BITWISE_AND:
+ case BINOP_BITWISE_IOR:
+ case BINOP_BITWISE_XOR:
+ {
+ struct value *val;
+
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ *pos = pc;
+ val = evaluate_subexp_standard (expect_type, exp, pos, noside);
+
+ return value_cast (value_type (arg1), val);
+ }
+
case OP_VAR_VALUE:
*pos -= 1;
+
if (noside == EVAL_SKIP)
{
*pos += 4;
SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol));
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
+ type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol));
+ if (ada_is_tagged_type (type, 0))
+ {
+ /* Tagged types are a little special in the fact that the real
+ type is dynamic and can only be determined by inspecting the
+ object's tag. This means that we need to get the object's
+ value first (EVAL_NORMAL) and then extract the actual object
+ type from its tag.
+
+ Note that we cannot skip the final step where we extract
+ the object type from its tag, because the EVAL_NORMAL phase
+ results in dynamic components being resolved into fixed ones.
+ This can cause problems when trying to print the type
+ description of tagged types whose parent has a dynamic size:
+ We use the type name of the "_parent" component in order
+ to print the name of the ancestor type in the type description.
+ If that component had a dynamic size, the resolution into
+ a fixed type would result in the loss of that type name,
+ thus preventing us from printing the name of the ancestor
+ type in the type description. */
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL);
+ return value_zero (type_from_tag (ada_value_tag (arg1)), not_lval);
+ }
+
*pos += 4;
return value_zero
(to_static_fixed_type
if (arity != nargs)
error (_("wrong number of subscripts; expecting %d"), arity);
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return allocate_value (ada_aligned_type (type));
+ return value_zero (ada_aligned_type (type), lval_memory);
return
unwrap_value (ada_value_subscript
(argvec[0], nargs, argvec + 1));
if (type == NULL)
error (_("element type of array unknown"));
else
- return allocate_value (ada_aligned_type (type));
+ return value_zero (ada_aligned_type (type), lval_memory);
}
return
unwrap_value (ada_value_subscript
if (type == NULL)
error (_("element type of array unknown"));
else
- return allocate_value (ada_aligned_type (type));
+ return value_zero (ada_aligned_type (type), lval_memory);
}
return
unwrap_value (ada_value_ptr_subscript (argvec[0], type,
default:
lim_warning (_("Membership test incompletely implemented; "
"always returns true"));
- return value_from_longest (builtin_type_int, (LONGEST) 1);
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
+ return value_from_longest (type, (LONGEST) 1);
case TYPE_CODE_RANGE:
- arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type));
- arg3 = value_from_longest (builtin_type_int,
- TYPE_HIGH_BOUND (type));
- return
- value_from_longest (builtin_type_int,
+ arg2 = value_from_longest (type, TYPE_LOW_BOUND (type));
+ arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type));
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
+ return
+ value_from_longest (type,
(value_less (arg1, arg3)
|| value_equal (arg1, arg3))
&& (value_less (arg2, arg1)
goto nosideret;
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (builtin_type_int, not_lval);
+ {
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
+ return value_zero (type, not_lval);
+ }
tem = longest_to_int (exp->elts[pc + 1].longconst);
arg3 = ada_array_bound (arg2, tem, 1);
arg2 = ada_array_bound (arg2, tem, 0);
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
return
- value_from_longest (builtin_type_int,
+ value_from_longest (type,
(value_less (arg1, arg3)
|| value_equal (arg1, arg3))
&& (value_less (arg2, arg1)
if (noside == EVAL_SKIP)
goto nosideret;
+ type = language_bool_type (exp->language_defn, exp->gdbarch);
return
- value_from_longest (builtin_type_int,
+ value_from_longest (type,
(value_less (arg1, arg3)
|| value_equal (arg1, arg3))
&& (value_less (arg2, arg1)
default:
error (_("unexpected attribute encountered"));
case OP_ATR_FIRST:
- return discrete_type_low_bound (range_type);
+ return value_from_longest
+ (range_type, discrete_type_low_bound (range_type));
case OP_ATR_LAST:
- return discrete_type_high_bound (range_type);
+ return value_from_longest
+ (range_type, discrete_type_high_bound (range_type));
case OP_ATR_LENGTH:
error (_("the 'length attribute applies only to array types"));
}
if (noside == EVAL_SKIP)
goto nosideret;
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (builtin_type_int, not_lval);
+ return value_zero (builtin_type_int32, not_lval);
else
- return value_from_longest (builtin_type_int,
+ return value_from_longest (builtin_type_int32,
TARGET_CHAR_BIT
* TYPE_LENGTH (value_type (arg1)));
if (noside == EVAL_SKIP)
goto nosideret;
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return allocate_value (builtin_type_void);
+ return allocate_value (exp->elts[pc + 1].type);
else
error (_("Attempt to use a type name as an expression"));
subtype_info = strstr (name, "___XD");
if (subtype_info == NULL)
- return raw_type;
+ {
+ LONGEST L = discrete_type_low_bound (raw_type);
+ LONGEST U = discrete_type_high_bound (raw_type);
+ if (L < INT_MIN || U > INT_MAX)
+ return raw_type;
+ else
+ return create_range_type (alloc_type (objfile), raw_type,
+ discrete_type_low_bound (raw_type),
+ discrete_type_high_bound (raw_type));
+ }
else
{
static char *name_buf = NULL;
struct type *subranged_type = base_type (type);
return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
- && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM
+ && TYPE_CODE (subranged_type) == TYPE_CODE_INT
&& TYPE_UNSIGNED (subranged_type));
}
return (ULONGEST) TYPE_HIGH_BOUND (type) + 1;
}
\f
+
+/* Ada exception catchpoint support:
+ ---------------------------------
+
+ We support 3 kinds of exception catchpoints:
+ . catchpoints on Ada exceptions
+ . catchpoints on unhandled Ada exceptions
+ . catchpoints on failed assertions
+
+ Exceptions raised during failed assertions, or unhandled exceptions
+ could perfectly be caught with the general catchpoint on Ada exceptions.
+ However, we can easily differentiate these two special cases, and having
+ the option to distinguish these two cases from the rest can be useful
+ to zero-in on certain situations.
+
+ Exception catchpoints are a specialized form of breakpoint,
+ since they rely on inserting breakpoints inside known routines
+ of the GNAT runtime. The implementation therefore uses a standard
+ breakpoint structure of the BP_BREAKPOINT type, but with its own set
+ of breakpoint_ops.
+
+ Support in the runtime for exception catchpoints have been changed
+ a few times already, and these changes affect the implementation
+ of these catchpoints. In order to be able to support several
+ variants of the runtime, we use a sniffer that will determine
+ the runtime variant used by the program being debugged.
+
+ At this time, we do not support the use of conditions on Ada exception
+ catchpoints. The COND and COND_STRING fields are therefore set
+ to NULL (most of the time, see below).
+
+ Conditions where EXP_STRING, COND, and COND_STRING are used:
+
+ When a user specifies the name of a specific exception in the case
+ of catchpoints on Ada exceptions, we store the name of that exception
+ in the EXP_STRING. We then translate this request into an actual
+ condition stored in COND_STRING, and then parse it into an expression
+ stored in COND. */
+
+/* The different types of catchpoints that we introduced for catching
+ Ada exceptions. */
+
+enum exception_catchpoint_kind
+{
+ ex_catch_exception,
+ ex_catch_exception_unhandled,
+ ex_catch_assert
+};
+
+typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void);
+
+/* A structure that describes how to support exception catchpoints
+ for a given executable. */
+
+struct exception_support_info
+{
+ /* The name of the symbol to break on in order to insert
+ a catchpoint on exceptions. */
+ const char *catch_exception_sym;
+
+ /* The name of the symbol to break on in order to insert
+ a catchpoint on unhandled exceptions. */
+ const char *catch_exception_unhandled_sym;
+
+ /* The name of the symbol to break on in order to insert
+ a catchpoint on failed assertions. */
+ const char *catch_assert_sym;
+
+ /* Assuming that the inferior just triggered an unhandled exception
+ catchpoint, this function is responsible for returning the address
+ in inferior memory where the name of that exception is stored.
+ Return zero if the address could not be computed. */
+ ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr;
+};
+
+static CORE_ADDR ada_unhandled_exception_name_addr (void);
+static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void);
+
+/* The following exception support info structure describes how to
+ implement exception catchpoints with the latest version of the
+ Ada runtime (as of 2007-03-06). */
+
+static const struct exception_support_info default_exception_support_info =
+{
+ "__gnat_debug_raise_exception", /* catch_exception_sym */
+ "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */
+ "__gnat_debug_raise_assert_failure", /* catch_assert_sym */
+ ada_unhandled_exception_name_addr
+};
+
+/* The following exception support info structure describes how to
+ implement exception catchpoints with a slightly older version
+ of the Ada runtime. */
+
+static const struct exception_support_info exception_support_info_fallback =
+{
+ "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */
+ "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */
+ "system__assertions__raise_assert_failure", /* catch_assert_sym */
+ ada_unhandled_exception_name_addr_from_raise
+};
+
+/* For each executable, we sniff which exception info structure to use
+ and cache it in the following global variable. */
+
+static const struct exception_support_info *exception_info = NULL;
+
+/* Inspect the Ada runtime and determine which exception info structure
+ should be used to provide support for exception catchpoints.
+
+ This function will always set exception_info, or raise an error. */
+
+static void
+ada_exception_support_info_sniffer (void)
+{
+ struct symbol *sym;
+
+ /* If the exception info is already known, then no need to recompute it. */
+ if (exception_info != NULL)
+ return;
+
+ /* Check the latest (default) exception support info. */
+ sym = standard_lookup (default_exception_support_info.catch_exception_sym,
+ NULL, VAR_DOMAIN);
+ if (sym != NULL)
+ {
+ exception_info = &default_exception_support_info;
+ return;
+ }
+
+ /* Try our fallback exception suport info. */
+ sym = standard_lookup (exception_support_info_fallback.catch_exception_sym,
+ NULL, VAR_DOMAIN);
+ if (sym != NULL)
+ {
+ exception_info = &exception_support_info_fallback;
+ return;
+ }
+
+ /* Sometimes, it is normal for us to not be able to find the routine
+ we are looking for. This happens when the program is linked with
+ the shared version of the GNAT runtime, and the program has not been
+ started yet. Inform the user of these two possible causes if
+ applicable. */
+
+ if (ada_update_initial_language (language_unknown, NULL) != language_ada)
+ error (_("Unable to insert catchpoint. Is this an Ada main program?"));
+
+ /* If the symbol does not exist, then check that the program is
+ already started, to make sure that shared libraries have been
+ loaded. If it is not started, this may mean that the symbol is
+ in a shared library. */
+
+ if (ptid_get_pid (inferior_ptid) == 0)
+ error (_("Unable to insert catchpoint. Try to start the program first."));
+
+ /* At this point, we know that we are debugging an Ada program and
+ that the inferior has been started, but we still are not able to
+ find the run-time symbols. That can mean that we are in
+ configurable run time mode, or that a-except as been optimized
+ out by the linker... In any case, at this point it is not worth
+ supporting this feature. */
+
+ error (_("Cannot insert catchpoints in this configuration."));
+}
+
+/* An observer of "executable_changed" events.
+ Its role is to clear certain cached values that need to be recomputed
+ each time a new executable is loaded by GDB. */
+
+static void
+ada_executable_changed_observer (void)
+{
+ /* If the executable changed, then it is possible that the Ada runtime
+ is different. So we need to invalidate the exception support info
+ cache. */
+ exception_info = NULL;
+}
+
+/* Return the name of the function at PC, NULL if could not find it.
+ This function only checks the debugging information, not the symbol
+ table. */
+
+static char *
+function_name_from_pc (CORE_ADDR pc)
+{
+ char *func_name;
+
+ if (!find_pc_partial_function (pc, &func_name, NULL, NULL))
+ return NULL;
+
+ return func_name;
+}
+
+/* True iff FRAME is very likely to be that of a function that is
+ part of the runtime system. This is all very heuristic, but is
+ intended to be used as advice as to what frames are uninteresting
+ to most users. */
+
+static int
+is_known_support_routine (struct frame_info *frame)
+{
+ struct symtab_and_line sal;
+ char *func_name;
+ int i;
+
+ /* If this code does not have any debugging information (no symtab),
+ This cannot be any user code. */
+
+ find_frame_sal (frame, &sal);
+ if (sal.symtab == NULL)
+ return 1;
+
+ /* If there is a symtab, but the associated source file cannot be
+ located, then assume this is not user code: Selecting a frame
+ for which we cannot display the code would not be very helpful
+ for the user. This should also take care of case such as VxWorks
+ where the kernel has some debugging info provided for a few units. */
+
+ if (symtab_to_fullname (sal.symtab) == NULL)
+ return 1;
+
+ /* Check the unit filename againt the Ada runtime file naming.
+ We also check the name of the objfile against the name of some
+ known system libraries that sometimes come with debugging info
+ too. */
+
+ for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1)
+ {
+ re_comp (known_runtime_file_name_patterns[i]);
+ if (re_exec (sal.symtab->filename))
+ return 1;
+ if (sal.symtab->objfile != NULL
+ && re_exec (sal.symtab->objfile->name))
+ return 1;
+ }
+
+ /* Check whether the function is a GNAT-generated entity. */
+
+ func_name = function_name_from_pc (get_frame_address_in_block (frame));
+ if (func_name == NULL)
+ return 1;
+
+ for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1)
+ {
+ re_comp (known_auxiliary_function_name_patterns[i]);
+ if (re_exec (func_name))
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Find the first frame that contains debugging information and that is not
+ part of the Ada run-time, starting from FI and moving upward. */
+
+static void
+ada_find_printable_frame (struct frame_info *fi)
+{
+ for (; fi != NULL; fi = get_prev_frame (fi))
+ {
+ if (!is_known_support_routine (fi))
+ {
+ select_frame (fi);
+ break;
+ }
+ }
+
+}
+
+/* Assuming that the inferior just triggered an unhandled exception
+ catchpoint, return the address in inferior memory where the name
+ of the exception is stored.
+
+ Return zero if the address could not be computed. */
+
+static CORE_ADDR
+ada_unhandled_exception_name_addr (void)
+{
+ return parse_and_eval_address ("e.full_name");
+}
+
+/* Same as ada_unhandled_exception_name_addr, except that this function
+ should be used when the inferior uses an older version of the runtime,
+ where the exception name needs to be extracted from a specific frame
+ several frames up in the callstack. */
+
+static CORE_ADDR
+ada_unhandled_exception_name_addr_from_raise (void)
+{
+ int frame_level;
+ struct frame_info *fi;
+
+ /* To determine the name of this exception, we need to select
+ the frame corresponding to RAISE_SYM_NAME. This frame is
+ at least 3 levels up, so we simply skip the first 3 frames
+ without checking the name of their associated function. */
+ fi = get_current_frame ();
+ for (frame_level = 0; frame_level < 3; frame_level += 1)
+ if (fi != NULL)
+ fi = get_prev_frame (fi);
+
+ while (fi != NULL)
+ {
+ const char *func_name =
+ function_name_from_pc (get_frame_address_in_block (fi));
+ if (func_name != NULL
+ && strcmp (func_name, exception_info->catch_exception_sym) == 0)
+ break; /* We found the frame we were looking for... */
+ fi = get_prev_frame (fi);
+ }
+
+ if (fi == NULL)
+ return 0;
+
+ select_frame (fi);
+ return parse_and_eval_address ("id.full_name");
+}
+
+/* Assuming the inferior just triggered an Ada exception catchpoint
+ (of any type), return the address in inferior memory where the name
+ of the exception is stored, if applicable.
+
+ Return zero if the address could not be computed, or if not relevant. */
+
+static CORE_ADDR
+ada_exception_name_addr_1 (enum exception_catchpoint_kind ex,
+ struct breakpoint *b)
+{
+ switch (ex)
+ {
+ case ex_catch_exception:
+ return (parse_and_eval_address ("e.full_name"));
+ break;
+
+ case ex_catch_exception_unhandled:
+ return exception_info->unhandled_exception_name_addr ();
+ break;
+
+ case ex_catch_assert:
+ return 0; /* Exception name is not relevant in this case. */
+ break;
+
+ default:
+ internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
+ break;
+ }
+
+ return 0; /* Should never be reached. */
+}
+
+/* Same as ada_exception_name_addr_1, except that it intercepts and contains
+ any error that ada_exception_name_addr_1 might cause to be thrown.
+ When an error is intercepted, a warning with the error message is printed,
+ and zero is returned. */
+
+static CORE_ADDR
+ada_exception_name_addr (enum exception_catchpoint_kind ex,
+ struct breakpoint *b)
+{
+ struct gdb_exception e;
+ CORE_ADDR result = 0;
+
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ result = ada_exception_name_addr_1 (ex, b);
+ }
+
+ if (e.reason < 0)
+ {
+ warning (_("failed to get exception name: %s"), e.message);
+ return 0;
+ }
+
+ return result;
+}
+
+/* Implement the PRINT_IT method in the breakpoint_ops structure
+ for all exception catchpoint kinds. */
+
+static enum print_stop_action
+print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b)
+{
+ const CORE_ADDR addr = ada_exception_name_addr (ex, b);
+ char exception_name[256];
+
+ if (addr != 0)
+ {
+ read_memory (addr, exception_name, sizeof (exception_name) - 1);
+ exception_name [sizeof (exception_name) - 1] = '\0';
+ }
+
+ ada_find_printable_frame (get_current_frame ());
+
+ annotate_catchpoint (b->number);
+ switch (ex)
+ {
+ case ex_catch_exception:
+ if (addr != 0)
+ printf_filtered (_("\nCatchpoint %d, %s at "),
+ b->number, exception_name);
+ else
+ printf_filtered (_("\nCatchpoint %d, exception at "), b->number);
+ break;
+ case ex_catch_exception_unhandled:
+ if (addr != 0)
+ printf_filtered (_("\nCatchpoint %d, unhandled %s at "),
+ b->number, exception_name);
+ else
+ printf_filtered (_("\nCatchpoint %d, unhandled exception at "),
+ b->number);
+ break;
+ case ex_catch_assert:
+ printf_filtered (_("\nCatchpoint %d, failed assertion at "),
+ b->number);
+ break;
+ }
+
+ return PRINT_SRC_AND_LOC;
+}
+
+/* Implement the PRINT_ONE method in the breakpoint_ops structure
+ for all exception catchpoint kinds. */
+
+static void
+print_one_exception (enum exception_catchpoint_kind ex,
+ struct breakpoint *b, CORE_ADDR *last_addr)
+{
+ if (addressprint)
+ {
+ annotate_field (4);
+ ui_out_field_core_addr (uiout, "addr", b->loc->address);
+ }
+
+ annotate_field (5);
+ *last_addr = b->loc->address;
+ switch (ex)
+ {
+ case ex_catch_exception:
+ if (b->exp_string != NULL)
+ {
+ char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string);
+
+ ui_out_field_string (uiout, "what", msg);
+ xfree (msg);
+ }
+ else
+ ui_out_field_string (uiout, "what", "all Ada exceptions");
+
+ break;
+
+ case ex_catch_exception_unhandled:
+ ui_out_field_string (uiout, "what", "unhandled Ada exceptions");
+ break;
+
+ case ex_catch_assert:
+ ui_out_field_string (uiout, "what", "failed Ada assertions");
+ break;
+
+ default:
+ internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
+ break;
+ }
+}
+
+/* Implement the PRINT_MENTION method in the breakpoint_ops structure
+ for all exception catchpoint kinds. */
+
+static void
+print_mention_exception (enum exception_catchpoint_kind ex,
+ struct breakpoint *b)
+{
+ switch (ex)
+ {
+ case ex_catch_exception:
+ if (b->exp_string != NULL)
+ printf_filtered (_("Catchpoint %d: `%s' Ada exception"),
+ b->number, b->exp_string);
+ else
+ printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number);
+
+ break;
+
+ case ex_catch_exception_unhandled:
+ printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"),
+ b->number);
+ break;
+
+ case ex_catch_assert:
+ printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number);
+ break;
+
+ default:
+ internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
+ break;
+ }
+}
+
+/* Virtual table for "catch exception" breakpoints. */
+
+static enum print_stop_action
+print_it_catch_exception (struct breakpoint *b)
+{
+ return print_it_exception (ex_catch_exception, b);
+}
+
+static void
+print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr)
+{
+ print_one_exception (ex_catch_exception, b, last_addr);
+}
+
+static void
+print_mention_catch_exception (struct breakpoint *b)
+{
+ print_mention_exception (ex_catch_exception, b);
+}
+
+static struct breakpoint_ops catch_exception_breakpoint_ops =
+{
+ print_it_catch_exception,
+ print_one_catch_exception,
+ print_mention_catch_exception
+};
+
+/* Virtual table for "catch exception unhandled" breakpoints. */
+
+static enum print_stop_action
+print_it_catch_exception_unhandled (struct breakpoint *b)
+{
+ return print_it_exception (ex_catch_exception_unhandled, b);
+}
+
+static void
+print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr)
+{
+ print_one_exception (ex_catch_exception_unhandled, b, last_addr);
+}
+
+static void
+print_mention_catch_exception_unhandled (struct breakpoint *b)
+{
+ print_mention_exception (ex_catch_exception_unhandled, b);
+}
+
+static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = {
+ print_it_catch_exception_unhandled,
+ print_one_catch_exception_unhandled,
+ print_mention_catch_exception_unhandled
+};
+
+/* Virtual table for "catch assert" breakpoints. */
+
+static enum print_stop_action
+print_it_catch_assert (struct breakpoint *b)
+{
+ return print_it_exception (ex_catch_assert, b);
+}
+
+static void
+print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr)
+{
+ print_one_exception (ex_catch_assert, b, last_addr);
+}
+
+static void
+print_mention_catch_assert (struct breakpoint *b)
+{
+ print_mention_exception (ex_catch_assert, b);
+}
+
+static struct breakpoint_ops catch_assert_breakpoint_ops = {
+ print_it_catch_assert,
+ print_one_catch_assert,
+ print_mention_catch_assert
+};
+
+/* Return non-zero if B is an Ada exception catchpoint. */
+
+int
+ada_exception_catchpoint_p (struct breakpoint *b)
+{
+ return (b->ops == &catch_exception_breakpoint_ops
+ || b->ops == &catch_exception_unhandled_breakpoint_ops
+ || b->ops == &catch_assert_breakpoint_ops);
+}
+
+/* Return a newly allocated copy of the first space-separated token
+ in ARGSP, and then adjust ARGSP to point immediately after that
+ token.
+
+ Return NULL if ARGPS does not contain any more tokens. */
+
+static char *
+ada_get_next_arg (char **argsp)
+{
+ char *args = *argsp;
+ char *end;
+ char *result;
+
+ /* Skip any leading white space. */
+
+ while (isspace (*args))
+ args++;
+
+ if (args[0] == '\0')
+ return NULL; /* No more arguments. */
+
+ /* Find the end of the current argument. */
+
+ end = args;
+ while (*end != '\0' && !isspace (*end))
+ end++;
+
+ /* Adjust ARGSP to point to the start of the next argument. */
+
+ *argsp = end;
+
+ /* Make a copy of the current argument and return it. */
+
+ result = xmalloc (end - args + 1);
+ strncpy (result, args, end - args);
+ result[end - args] = '\0';
+
+ return result;
+}
+
+/* Split the arguments specified in a "catch exception" command.
+ Set EX to the appropriate catchpoint type.
+ Set EXP_STRING to the name of the specific exception if
+ specified by the user. */
+
+static void
+catch_ada_exception_command_split (char *args,
+ enum exception_catchpoint_kind *ex,
+ char **exp_string)
+{
+ struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ char *exception_name;
+
+ exception_name = ada_get_next_arg (&args);
+ make_cleanup (xfree, exception_name);
+
+ /* Check that we do not have any more arguments. Anything else
+ is unexpected. */
+
+ while (isspace (*args))
+ args++;
+
+ if (args[0] != '\0')
+ error (_("Junk at end of expression"));
+
+ discard_cleanups (old_chain);
+
+ if (exception_name == NULL)
+ {
+ /* Catch all exceptions. */
+ *ex = ex_catch_exception;
+ *exp_string = NULL;
+ }
+ else if (strcmp (exception_name, "unhandled") == 0)
+ {
+ /* Catch unhandled exceptions. */
+ *ex = ex_catch_exception_unhandled;
+ *exp_string = NULL;
+ }
+ else
+ {
+ /* Catch a specific exception. */
+ *ex = ex_catch_exception;
+ *exp_string = exception_name;
+ }
+}
+
+/* Return the name of the symbol on which we should break in order to
+ implement a catchpoint of the EX kind. */
+
+static const char *
+ada_exception_sym_name (enum exception_catchpoint_kind ex)
+{
+ gdb_assert (exception_info != NULL);
+
+ switch (ex)
+ {
+ case ex_catch_exception:
+ return (exception_info->catch_exception_sym);
+ break;
+ case ex_catch_exception_unhandled:
+ return (exception_info->catch_exception_unhandled_sym);
+ break;
+ case ex_catch_assert:
+ return (exception_info->catch_assert_sym);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("unexpected catchpoint kind (%d)"), ex);
+ }
+}
+
+/* Return the breakpoint ops "virtual table" used for catchpoints
+ of the EX kind. */
+
+static struct breakpoint_ops *
+ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex)
+{
+ switch (ex)
+ {
+ case ex_catch_exception:
+ return (&catch_exception_breakpoint_ops);
+ break;
+ case ex_catch_exception_unhandled:
+ return (&catch_exception_unhandled_breakpoint_ops);
+ break;
+ case ex_catch_assert:
+ return (&catch_assert_breakpoint_ops);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("unexpected catchpoint kind (%d)"), ex);
+ }
+}
+
+/* Return the condition that will be used to match the current exception
+ being raised with the exception that the user wants to catch. This
+ assumes that this condition is used when the inferior just triggered
+ an exception catchpoint.
+
+ The string returned is a newly allocated string that needs to be
+ deallocated later. */
+
+static char *
+ada_exception_catchpoint_cond_string (const char *exp_string)
+{
+ return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string);
+}
+
+/* Return the expression corresponding to COND_STRING evaluated at SAL. */
+
+static struct expression *
+ada_parse_catchpoint_condition (char *cond_string,
+ struct symtab_and_line sal)
+{
+ return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0));
+}
+
+/* Return the symtab_and_line that should be used to insert an exception
+ catchpoint of the TYPE kind.
+
+ EX_STRING should contain the name of a specific exception
+ that the catchpoint should catch, or NULL otherwise.
+
+ The idea behind all the remaining parameters is that their names match
+ the name of certain fields in the breakpoint structure that are used to
+ handle exception catchpoints. This function returns the value to which
+ these fields should be set, depending on the type of catchpoint we need
+ to create.
+
+ If COND and COND_STRING are both non-NULL, any value they might
+ hold will be free'ed, and then replaced by newly allocated ones.
+ These parameters are left untouched otherwise. */
+
+static struct symtab_and_line
+ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string,
+ char **addr_string, char **cond_string,
+ struct expression **cond, struct breakpoint_ops **ops)
+{
+ const char *sym_name;
+ struct symbol *sym;
+ struct symtab_and_line sal;
+
+ /* First, find out which exception support info to use. */
+ ada_exception_support_info_sniffer ();
+
+ /* Then lookup the function on which we will break in order to catch
+ the Ada exceptions requested by the user. */
+
+ sym_name = ada_exception_sym_name (ex);
+ sym = standard_lookup (sym_name, NULL, VAR_DOMAIN);
+
+ /* The symbol we're looking up is provided by a unit in the GNAT runtime
+ that should be compiled with debugging information. As a result, we
+ expect to find that symbol in the symtabs. If we don't find it, then
+ the target most likely does not support Ada exceptions, or we cannot
+ insert exception breakpoints yet, because the GNAT runtime hasn't been
+ loaded yet. */
+
+ /* brobecker/2006-12-26: It is conceivable that the runtime was compiled
+ in such a way that no debugging information is produced for the symbol
+ we are looking for. In this case, we could search the minimal symbols
+ as a fall-back mechanism. This would still be operating in degraded
+ mode, however, as we would still be missing the debugging information
+ that is needed in order to extract the name of the exception being
+ raised (this name is printed in the catchpoint message, and is also
+ used when trying to catch a specific exception). We do not handle
+ this case for now. */
+
+ if (sym == NULL)
+ error (_("Unable to break on '%s' in this configuration."), sym_name);
+
+ /* Make sure that the symbol we found corresponds to a function. */
+ if (SYMBOL_CLASS (sym) != LOC_BLOCK)
+ error (_("Symbol \"%s\" is not a function (class = %d)"),
+ sym_name, SYMBOL_CLASS (sym));
+
+ sal = find_function_start_sal (sym, 1);
+
+ /* Set ADDR_STRING. */
+
+ *addr_string = xstrdup (sym_name);
+
+ /* Set the COND and COND_STRING (if not NULL). */
+
+ if (cond_string != NULL && cond != NULL)
+ {
+ if (*cond_string != NULL)
+ {
+ xfree (*cond_string);
+ *cond_string = NULL;
+ }
+ if (*cond != NULL)
+ {
+ xfree (*cond);
+ *cond = NULL;
+ }
+ if (exp_string != NULL)
+ {
+ *cond_string = ada_exception_catchpoint_cond_string (exp_string);
+ *cond = ada_parse_catchpoint_condition (*cond_string, sal);
+ }
+ }
+
+ /* Set OPS. */
+ *ops = ada_exception_breakpoint_ops (ex);
+
+ return sal;
+}
+
+/* Parse the arguments (ARGS) of the "catch exception" command.
+
+ Set TYPE to the appropriate exception catchpoint type.
+ If the user asked the catchpoint to catch only a specific
+ exception, then save the exception name in ADDR_STRING.
+
+ See ada_exception_sal for a description of all the remaining
+ function arguments of this function. */
+
+struct symtab_and_line
+ada_decode_exception_location (char *args, char **addr_string,
+ char **exp_string, char **cond_string,
+ struct expression **cond,
+ struct breakpoint_ops **ops)
+{
+ enum exception_catchpoint_kind ex;
+
+ catch_ada_exception_command_split (args, &ex, exp_string);
+ return ada_exception_sal (ex, *exp_string, addr_string, cond_string,
+ cond, ops);
+}
+
+struct symtab_and_line
+ada_decode_assert_location (char *args, char **addr_string,
+ struct breakpoint_ops **ops)
+{
+ /* Check that no argument where provided at the end of the command. */
+
+ if (args != NULL)
+ {
+ while (isspace (*args))
+ args++;
+ if (*args != '\0')
+ error (_("Junk at end of arguments."));
+ }
+
+ return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL,
+ ops);
+}
+
/* Operators */
/* Information about operators given special treatment in functions
below. */
{NULL, 0, 0, 0}
};
\f
- /* Fundamental Ada Types */
-
-/* Create a fundamental Ada type using default reasonable for the current
- target machine.
-
- Some object/debugging file formats (DWARF version 1, COFF, etc) do not
- define fundamental types such as "int" or "double". Others (stabs or
- DWARF version 2, etc) do define fundamental types. For the formats which
- don't provide fundamental types, gdb can create such types using this
- function.
-
- FIXME: Some compilers distinguish explicitly signed integral types
- (signed short, signed int, signed long) from "regular" integral types
- (short, int, long) in the debugging information. There is some dis-
- agreement as to how useful this feature is. In particular, gcc does
- not support this. Also, only some debugging formats allow the
- distinction to be passed on to a debugger. For now, we always just
- use "short", "int", or "long" as the type name, for both the implicit
- and explicitly signed types. This also makes life easier for the
- gdb test suite since we don't have to account for the differences
- in output depending upon what the compiler and debugging format
- support. We will probably have to re-examine the issue when gdb
- starts taking it's fundamental type information directly from the
- debugging information supplied by the compiler. fnf@cygnus.com */
-
-static struct type *
-ada_create_fundamental_type (struct objfile *objfile, int typeid)
-{
- struct type *type = NULL;
-
- switch (typeid)
- {
- default:
- /* FIXME: For now, if we are asked to produce a type not in this
- language, create the equivalent of a C integer type with the
- name "<?type?>". When all the dust settles from the type
- reconstruction work, this should probably become an error. */
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "<?type?>", objfile);
- warning (_("internal error: no Ada fundamental type %d"), typeid);
- break;
- case FT_VOID:
- type = init_type (TYPE_CODE_VOID,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "void", objfile);
- break;
- case FT_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "character", objfile);
- break;
- case FT_SIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "signed char", objfile);
- break;
- case FT_UNSIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
- break;
- case FT_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "short_integer", objfile);
- break;
- case FT_SIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "short_integer", objfile);
- break;
- case FT_UNSIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
- break;
- case FT_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "integer", objfile);
- break;
- case FT_SIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT, TARGET_INT_BIT /
- TARGET_CHAR_BIT,
- 0, "integer", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
- break;
- case FT_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long_integer", objfile);
- break;
- case FT_SIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long_integer", objfile);
- break;
- case FT_UNSIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
- break;
- case FT_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long_long_integer", objfile);
- break;
- case FT_SIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long_long_integer", objfile);
- break;
- case FT_UNSIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
- 0, "float", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "long_float", objfile);
- break;
- case FT_EXT_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "long_long_float", objfile);
- break;
- }
- return (type);
-}
-
enum ada_primitive_types {
ada_primitive_type_int,
ada_primitive_type_long,
};
static void
-ada_language_arch_info (struct gdbarch *current_gdbarch,
+ada_language_arch_info (struct gdbarch *gdbarch,
struct language_arch_info *lai)
{
- const struct builtin_type *builtin = builtin_type (current_gdbarch);
+ const struct builtin_type *builtin = builtin_type (gdbarch);
lai->primitive_type_vector
- = GDBARCH_OBSTACK_CALLOC (current_gdbarch, nr_ada_primitive_types + 1,
+ = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1,
struct type *);
lai->primitive_type_vector [ada_primitive_type_int] =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "integer", (struct objfile *) NULL);
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
+ 0, "integer", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_long] =
- init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long_integer", (struct objfile *) NULL);
+ init_type (TYPE_CODE_INT,
+ gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT,
+ 0, "long_integer", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_short] =
- init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "short_integer", (struct objfile *) NULL);
+ init_type (TYPE_CODE_INT,
+ gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT,
+ 0, "short_integer", (struct objfile *) NULL);
lai->string_char_type =
lai->primitive_type_vector [ada_primitive_type_char] =
init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "character", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_float] =
- init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_FLT,
+ gdbarch_float_bit (gdbarch)/ TARGET_CHAR_BIT,
0, "float", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_double] =
- init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_FLT,
+ gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
0, "long_float", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_long_long] =
- init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_INT,
+ gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT,
0, "long_long_integer", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_long_double] =
- init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
+ init_type (TYPE_CODE_FLT,
+ gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
0, "long_long_float", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_natural] =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "natural", (struct objfile *) NULL);
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
+ 0, "natural", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_positive] =
- init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "positive", (struct objfile *) NULL);
+ init_type (TYPE_CODE_INT,
+ gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT,
+ 0, "positive", (struct objfile *) NULL);
lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void;
lai->primitive_type_vector [ada_primitive_type_system_address] =
(struct objfile *) NULL));
TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address])
= "system__address";
+
+ lai->bool_type_symbol = "boolean";
+ lai->bool_type_default = builtin->builtin_bool;
}
\f
/* Language vector */
const struct language_defn ada_language_defn = {
"ada", /* Language name */
language_ada,
- NULL,
range_check_off,
type_check_off,
case_sensitive_on, /* Yes, Ada is case-insensitive, but
ada_printchar, /* Print a character constant */
ada_printstr, /* Function to print string constant */
emit_char, /* Function to print single char (not used) */
- ada_create_fundamental_type, /* Create fundamental type in this language */
ada_print_type, /* Print a type using appropriate syntax */
ada_val_print, /* Print a value using appropriate syntax */
ada_value_print, /* Print a top-level value */
NULL, /* Language specific skip_trampoline */
- NULL, /* value_of_this */
+ NULL, /* name_of_this */
ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */
basic_lookup_transparent_type, /* lookup_transparent_type */
ada_la_decode, /* Language specific symbol demangler */
ada_op_print_tab, /* expression operators for printing */
0, /* c-style arrays */
1, /* String lower bound */
- NULL,
ada_get_gdb_completer_word_break_characters,
+ ada_make_symbol_completion_list,
ada_language_arch_info,
ada_print_array_index,
+ default_pass_by_reference,
LANG_MAGIC
};
decoded_names_store = htab_create_alloc
(256, htab_hash_string, (int (*)(const void *, const void *)) streq,
NULL, xcalloc, xfree);
+
+ observer_attach_executable_changed (ada_executable_changed_observer);
}
projects / deliverable / binutils-gdb.git / blobdiff