/* Ada language support routines for GDB, the GNU debugger. Copyright (C)
- 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007
- Free Software Foundation, Inc.
+ 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008,
+ 2009 Free Software Foundation, Inc.
This file is part of GDB.
static void
ada_print_array_index (struct value *index_value, struct ui_file *stream,
- int format, enum val_prettyprint pretty)
+ const struct value_print_options *options)
{
- LA_VALUE_PRINT (index_value, stream, format, pretty);
+ LA_VALUE_PRINT (index_value, stream, options);
fprintf_filtered (stream, " => ");
}
return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0);
}
-/* Create a value of type TYPE whose contents come from VALADDR, if it
- is non-null, and whose memory address (in the inferior) is
- ADDRESS. */
-
-struct value *
-value_from_contents_and_address (struct type *type,
- const gdb_byte *valaddr,
- CORE_ADDR address)
-{
- struct value *v = allocate_value (type);
- if (valaddr == NULL)
- set_value_lazy (v, 1);
- else
- memcpy (value_contents_raw (v), valaddr, TYPE_LENGTH (type));
- VALUE_ADDRESS (v) = address;
- if (address != 0)
- VALUE_LVAL (v) = lval_memory;
- return v;
-}
-
/* The contents of value VAL, treated as a value of type TYPE. The
result is an lval in memory if VAL is. */
check_size (type);
result = allocate_value (type);
- VALUE_LVAL (result) = VALUE_LVAL (val);
+ set_value_component_location (result, val);
set_value_bitsize (result, value_bitsize (val));
set_value_bitpos (result, value_bitpos (val));
- VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val);
+ VALUE_ADDRESS (result) += value_offset (val);
if (value_lazy (val)
|| TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val)))
set_value_lazy (result, 1);
{NULL, NULL}
};
-/* Return non-zero if STR should be suppressed in info listings. */
-
-static int
-is_suppressed_name (const char *str)
-{
- if (strncmp (str, "_ada_", 5) == 0)
- str += 5;
- if (str[0] == '_' || str[0] == '\000')
- return 1;
- else
- {
- const char *p;
- const char *suffix = strstr (str, "___");
- if (suffix != NULL && suffix[3] != 'X')
- return 1;
- if (suffix == NULL)
- suffix = str + strlen (str);
- for (p = suffix - 1; p != str; p -= 1)
- if (isupper (*p))
- {
- int i;
- if (p[0] == 'X' && p[-1] != '_')
- goto OK;
- if (*p != 'O')
- return 1;
- for (i = 0; ada_opname_table[i].encoded != NULL; i += 1)
- if (strncmp (ada_opname_table[i].encoded, p,
- strlen (ada_opname_table[i].encoded)) == 0)
- goto OK;
- return 1;
- OK:;
- }
- return 0;
- }
-}
-
/* The "encoded" form of DECODED, according to GNAT conventions.
The result is valid until the next call to ada_encode. */
return *resultp;
}
-char *
+static char *
ada_la_decode (const char *encoded, int options)
{
return xstrdup (ada_decode (encoded));
suffix of SYM_NAME minus the same suffixes. Also returns 0 if
either argument is NULL. */
-int
+static int
ada_match_name (const char *sym_name, const char *name, int wild)
{
if (sym_name == NULL || name == NULL)
&& is_name_suffix (sym_name + len_name + 5));
}
}
-
-/* True (non-zero) iff, in Ada mode, the symbol SYM should be
- suppressed in info listings. */
-
-int
-ada_suppress_symbol_printing (struct symbol *sym)
-{
- if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)
- return 1;
- else
- return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym));
-}
\f
/* Arrays */
/* Non-zero iff TYPE represents any kind of array in Ada, or a pointer
* to one. */
-int
+static int
ada_is_array_type (struct type *type)
{
while (type != NULL
new_type = alloc_type (TYPE_OBJFILE (type));
new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)),
elt_bits);
- create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0));
+ create_array_type (new_type, new_elt_type, TYPE_INDEX_TYPE (type));
TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits;
TYPE_NAME (new_type) = ada_type_name (type);
- if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
+ if (get_discrete_bounds (TYPE_INDEX_TYPE (type),
&low_bound, &high_bound) < 0)
low_bound = high_bound = 0;
if (high_bound < low_bound)
return NULL;
}
shadow_type = SYMBOL_TYPE (sym);
+ CHECK_TYPEDEF (shadow_type);
if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY)
{
if (obj != NULL)
{
- VALUE_LVAL (v) = VALUE_LVAL (obj);
- if (VALUE_LVAL (obj) == lval_internalvar)
- VALUE_LVAL (v) = lval_internalvar_component;
- VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset;
+ set_value_component_location (v, obj);
+ VALUE_ADDRESS (v) += value_offset (obj) + offset;
set_value_bitpos (v, bit_offset + value_bitpos (obj));
set_value_bitsize (v, bit_size);
if (value_bitpos (v) >= HOST_CHAR_BIT)
/* ... And are placed at the beginning (most-significant) bytes
of the target. */
targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1;
+ ntarg = targ + 1;
break;
default:
accumSize = 0;
value of the element of *ARR at the ARITY indices given in
IND. Does not read the entire array into memory. */
-struct value *
+static struct value *
ada_value_ptr_subscript (struct value *arr, struct type *type, int arity,
struct value **ind)
{
}
/* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the
- actual type of ARRAY_PTR is ignored), returns a reference to
- the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower
- bound of this array is LOW, as per Ada rules. */
+ actual type of ARRAY_PTR is ignored), returns the Ada slice of HIGH-LOW+1
+ elements starting at index LOW. The lower bound of this array is LOW, as
+ per Ada rules. */
static struct value *
-ada_value_slice_ptr (struct value *array_ptr, struct type *type,
- int low, int high)
+ada_value_slice_from_ptr (struct value *array_ptr, struct type *type,
+ int low, int high)
{
CORE_ADDR base = value_as_address (array_ptr)
+ ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)))
low, high);
struct type *slice_type =
create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type);
- return value_from_pointer (lookup_reference_type (slice_type), base);
+ return value_at_lazy (slice_type, base);
}
for (i = 1; i < n; i += 1)
type = TYPE_TARGET_TYPE (type);
- result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
+ result_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type));
/* FIXME: The stabs type r(0,0);bound;bound in an array type
has a target type of TYPE_CODE_UNDEF. We compensate here, but
perhaps stabsread.c would make more sense. */
ada_array_bound_from_type (struct type * arr_type, int n, int which,
struct type ** typep)
{
- struct type *type;
- struct type *index_type_desc;
+ struct type *type, *index_type_desc, *index_type;
+ LONGEST retval;
+
+ gdb_assert (which == 0 || which == 1);
if (ada_is_packed_array_type (arr_type))
arr_type = decode_packed_array_type (arr_type);
type = arr_type;
index_type_desc = ada_find_parallel_type (type, "___XA");
- if (index_type_desc == NULL)
+ if (index_type_desc != NULL)
+ index_type = to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1),
+ NULL, TYPE_OBJFILE (arr_type));
+ else
{
- struct type *index_type;
-
while (n > 1)
{
type = TYPE_TARGET_TYPE (type);
}
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_FIELD_BITPOS (index_type, 0)
- : TYPE_FIELD_BITPOS (index_type,
- TYPE_NFIELDS (index_type) - 1));
}
- else
+
+ switch (TYPE_CODE (index_type))
{
- struct type *index_type =
- to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1),
- NULL, TYPE_OBJFILE (arr_type));
+ case TYPE_CODE_RANGE:
+ retval = which == 0 ? TYPE_LOW_BOUND (index_type)
+ : TYPE_HIGH_BOUND (index_type);
+ break;
+ case TYPE_CODE_ENUM:
+ retval = which == 0 ? TYPE_FIELD_BITPOS (index_type, 0)
+ : TYPE_FIELD_BITPOS (index_type,
+ TYPE_NFIELDS (index_type) - 1);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, _("invalid type code of index type"));
+ }
- if (typep != NULL)
- *typep = index_type;
+ if (typep != NULL)
+ *typep = index_type;
- return
- (LONGEST) (which == 0
- ? TYPE_LOW_BOUND (index_type)
- : TYPE_HIGH_BOUND (index_type));
- }
+ return retval;
}
/* Given that arr is an array value, returns the lower bound of the
Does not work for arrays indexed by enumeration types with representation
clauses at the moment. */
-struct value *
+static struct value *
ada_array_length (struct value *arr, int n)
{
struct type *arr_type = ada_check_typedef (value_type (arr));
/* Given ARG, a value of type (pointer or reference to a)*
structure/union, extract the component named NAME from the ultimate
target structure/union and return it as a value with its
- appropriate type. If ARG is a pointer or reference and the field
- is not packed, returns a reference to the field, otherwise the
- value of the field (an lvalue if ARG is an lvalue).
+ appropriate type.
The routine searches for NAME among all members of the structure itself
and (recursively) among all members of any wrapper members
field_type);
}
else
- v = value_from_pointer (lookup_reference_type (field_type),
- address + byte_offset);
+ v = value_at_lazy (field_type, address + byte_offset);
}
}
ada_find_any_type (const char *name)
{
struct symbol *sym = ada_find_any_symbol (name);
+ struct type *type = NULL;
if (sym != NULL)
- return SYMBOL_TYPE (sym);
+ type = SYMBOL_TYPE (sym);
- return NULL;
+ if (type == NULL)
+ type = language_lookup_primitive_type_by_name
+ (language_def (language_ada), current_gdbarch, name);
+
+ return type;
}
/* Given NAME and an associated BLOCK, search all symbols for
else if (is_dynamic_field (type, f))
{
if (dval0 == NULL)
- dval = value_from_contents_and_address (rtype, valaddr, address);
+ {
+ /* rtype's length is computed based on the run-time
+ value of discriminants. If the discriminants are not
+ initialized, the type size may be completely bogus and
+ GDB may fail to allocate a value for it. So check the
+ size first before creating the value. */
+ check_size (rtype);
+ dval = value_from_contents_and_address (rtype, valaddr, address);
+ }
else
dval = dval0;
without consulting any runtime values. For Ada dynamic-sized
types, therefore, the type of the result is likely to be inaccurate. */
-struct value *
+static struct value *
ada_to_static_fixed_value (struct value *val)
{
struct type *type =
case BINOP_MUL:
case BINOP_DIV:
+ case BINOP_REM:
+ case BINOP_MOD:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- else if (noside == EVAL_AVOID_SIDE_EFFECTS
- && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD))
- return value_zero (value_type (arg1), not_lval);
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ {
+ binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2);
+ return value_zero (value_type (arg1), not_lval);
+ }
else
{
type = builtin_type (exp->gdbarch)->builtin_double;
return ada_value_binop (arg1, arg2, op);
}
- case BINOP_REM:
- case BINOP_MOD:
- arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- if (noside == EVAL_SKIP)
- goto nosideret;
- else if (noside == EVAL_AVOID_SIDE_EFFECTS
- && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD))
- return value_zero (value_type (arg1), not_lval);
- else
- {
- binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2);
- return ada_value_binop (arg1, arg2, op);
- }
-
case BINOP_EQUAL:
case BINOP_NOTEQUAL:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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. */
+ struct type *actual_type;
+
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL);
- return value_zero (type_from_tag (ada_value_tag (arg1)), not_lval);
+ actual_type = type_from_tag (ada_value_tag (arg1));
+ if (actual_type == NULL)
+ /* If, for some reason, we were unable to determine
+ the actual type from the tag, then use the static
+ approximation that we just computed as a fallback.
+ This can happen if the debugging information is
+ incomplete, for instance. */
+ actual_type = type;
+
+ return value_zero (actual_type, not_lval);
}
*pos += 4;
struct type *arr_type0 =
to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)),
NULL, 1);
- return ada_value_slice_ptr (array, arr_type0,
- longest_to_int (low_bound),
- longest_to_int (high_bound));
+ return ada_value_slice_from_ptr (array, arr_type0,
+ longest_to_int (low_bound),
+ longest_to_int (high_bound));
}
}
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */
type = ada_check_typedef (value_type (arg1));
- if (TYPE_CODE (type) == TYPE_CODE_INT && expect_type != NULL)
- /* GDB allows dereferencing an int. We give it the expected
- type (which will be set in the case of a coercion or
- qualification). */
- return ada_value_ind (value_cast (lookup_pointer_type (expect_type),
- arg1));
+ if (TYPE_CODE (type) == TYPE_CODE_INT)
+ /* GDB allows dereferencing an int. If we were given
+ the expect_type, then use that as the target type.
+ Otherwise, assume that the target type is an int. */
+ {
+ if (expect_type != NULL)
+ return ada_value_ind (value_cast (lookup_pointer_type (expect_type),
+ arg1));
+ else
+ return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int,
+ (CORE_ADDR) value_as_address (arg1));
+ }
if (ada_is_array_descriptor_type (type))
/* GDB allows dereferencing GNAT array descriptors. */
ada_delta (struct type *type)
{
const char *encoding = fixed_type_info (type);
- long num, den;
+ DOUBLEST num, den;
- if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2)
+ /* Strictly speaking, num and den are encoded as integer. However,
+ they may not fit into a long, and they will have to be converted
+ to DOUBLEST anyway. So scan them as DOUBLEST. */
+ if (sscanf (encoding, "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT,
+ &num, &den) < 2)
return -1.0;
else
- return (DOUBLEST) num / (DOUBLEST) den;
+ return num / den;
}
/* Assuming that ada_is_fixed_point_type (TYPE), return the scaling
scaling_factor (struct type *type)
{
const char *encoding = fixed_type_info (type);
- unsigned long num0, den0, num1, den1;
+ DOUBLEST num0, den0, num1, den1;
int n;
- n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1);
+ /* Strictly speaking, num's and den's are encoded as integer. However,
+ they may not fit into a long, and they will have to be converted
+ to DOUBLEST anyway. So scan them as DOUBLEST. */
+ n = sscanf (encoding,
+ "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT
+ "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT,
+ &num0, &den0, &num1, &den1);
if (n < 2)
return 1.0;
else if (n == 4)
- return (DOUBLEST) num1 / (DOUBLEST) den1;
+ return num1 / den1;
else
- return (DOUBLEST) num0 / (DOUBLEST) den0;
+ return num0 / den0;
}
&& TYPE_UNSIGNED (subranged_type));
}
+/* Try to determine the lower and upper bounds of the given modular type
+ using the type name only. Return non-zero and set L and U as the lower
+ and upper bounds (respectively) if successful. */
+
+int
+ada_modulus_from_name (struct type *type, ULONGEST *modulus)
+{
+ char *name = ada_type_name (type);
+ char *suffix;
+ int k;
+ LONGEST U;
+
+ if (name == NULL)
+ return 0;
+
+ /* Discrete type bounds are encoded using an __XD suffix. In our case,
+ we are looking for static bounds, which means an __XDLU suffix.
+ Moreover, we know that the lower bound of modular types is always
+ zero, so the actual suffix should start with "__XDLU_0__", and
+ then be followed by the upper bound value. */
+ suffix = strstr (name, "__XDLU_0__");
+ if (suffix == NULL)
+ return 0;
+ k = 10;
+ if (!ada_scan_number (suffix, k, &U, NULL))
+ return 0;
+
+ *modulus = (ULONGEST) U + 1;
+ return 1;
+}
+
/* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */
ULONGEST
-ada_modulus (struct type * type)
+ada_modulus (struct type *type)
{
+ ULONGEST modulus;
+
+ /* Normally, the modulus of a modular type is equal to the value of
+ its upper bound + 1. However, the upper bound is currently stored
+ as an int, which is not always big enough to hold the actual bound
+ value. To workaround this, try to take advantage of the encoding
+ that GNAT uses with with discrete types. To avoid some unnecessary
+ parsing, we do this only when the size of TYPE is greater than
+ the size of the field holding the bound. */
+ if (TYPE_LENGTH (type) > sizeof (TYPE_HIGH_BOUND (type))
+ && ada_modulus_from_name (type, &modulus))
+ return modulus;
+
return (ULONGEST) (unsigned int) TYPE_HIGH_BOUND (type) + 1;
}
\f
print_one_exception (enum exception_catchpoint_kind ex,
struct breakpoint *b, CORE_ADDR *last_addr)
{
- if (addressprint)
+ struct value_print_options opts;
+
+ get_user_print_options (&opts);
+ if (opts.addressprint)
{
annotate_field (4);
ui_out_field_core_addr (uiout, "addr", b->loc->address);
TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address])
= "system__address";
- lai->bool_type_symbol = "boolean";
+ lai->bool_type_symbol = NULL;
lai->bool_type_default = builtin->builtin_bool;
}
\f
/* Not really used, but needed in the ada_language_defn. */
static void
-emit_char (int c, struct ui_file *stream, int quoter)
+emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
- ada_emit_char (c, stream, quoter, 1);
+ ada_emit_char (c, type, stream, quoter, 1);
}
static int
ada_language_arch_info,
ada_print_array_index,
default_pass_by_reference,
+ c_get_string,
LANG_MAGIC
};
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_ada_language;
+
void
_initialize_ada_language (void)
{
projects / deliverable / binutils-gdb.git / blobdiff