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-rw-r--r--gdb/valarith.c143
1 files changed, 121 insertions, 22 deletions
diff --git a/gdb/valarith.c b/gdb/valarith.c
index e82f014..3848029 100644
--- a/gdb/valarith.c
+++ b/gdb/valarith.c
@@ -24,6 +24,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "expression.h"
#include "target.h"
#include "language.h"
+#include "demangle.h"
#include <string.h>
/* Define whether or not the C operator '/' truncates towards zero for
@@ -126,7 +127,10 @@ value_subscript (array, idx)
value bound;
struct type *range_type;
- if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY)
+ COERCE_REF (array);
+
+ if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY
+ || TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_STRING)
{
range_type = TYPE_FIELD_TYPE (VALUE_TYPE (array), 0);
lowerbound = TYPE_FIELD_BITPOS (range_type, 0);
@@ -139,6 +143,7 @@ value_subscript (array, idx)
{
return value_subscripted_rvalue (array, idx);
}
+ array = value_coerce_array (array);
}
return value_ind (value_add (array, idx));
}
@@ -225,8 +230,8 @@ value_x_binop (arg1, arg2, op, otherop)
enum exp_opcode op, otherop;
{
value * argvec;
- char *ptr;
- char tstr[13];
+ char *ptr, *mangle_ptr;
+ char tstr[13], mangle_tstr[13];
int static_memfuncp;
COERCE_REF (arg1);
@@ -292,7 +297,9 @@ value_x_binop (arg1, arg2, op, otherop)
default:
error ("Invalid binary operation specified.");
}
+
argvec[0] = value_struct_elt (&arg1, argvec+1, tstr, &static_memfuncp, "structure");
+
if (argvec[0])
{
if (static_memfuncp)
@@ -320,8 +327,8 @@ value_x_unop (arg1, op)
enum exp_opcode op;
{
value * argvec;
- char *ptr;
- char tstr[13];
+ char *ptr, *mangle_ptr;
+ char tstr[13], mangle_tstr[13];
int static_memfuncp;
COERCE_ENUM (arg1);
@@ -339,6 +346,8 @@ value_x_unop (arg1, op)
/* make the right function name up */
strcpy(tstr,"operator__");
ptr = tstr+8;
+ strcpy(mangle_tstr, "__");
+ mangle_ptr = mangle_tstr+2;
switch (op)
{
case UNOP_PREINCREMENT: strcpy(ptr,"++"); break;
@@ -351,7 +360,9 @@ value_x_unop (arg1, op)
default:
error ("Invalid binary operation specified.");
}
+
argvec[0] = value_struct_elt (&arg1, argvec+1, tstr, &static_memfuncp, "structure");
+
if (argvec[0])
{
if (static_memfuncp)
@@ -506,6 +517,15 @@ value_concat (arg1, arg2)
}
+/* The type we give to value_binop results. This is a kludge to get around
+ the fact that we don't know how to determine the result type from
+ the types of the operands. (I'm not really sure how much we feel
+ the need to duplicate the exact rules of the current language.
+ They can get really hairy. But not to do so makes it hard to document
+ just what we *do* do). */
+static struct type *signed_operation_result;
+static struct type *unsigned_operation_result;
+
/* Perform a binary operation on two operands which have reasonable
representations as integers or floats. This includes booleans,
characters, integers, or floats.
@@ -543,6 +563,9 @@ value_binop (arg1, arg2, op)
||
TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_FLT)
{
+ /* FIXME-if-picky-about-floating-accuracy: Should be doing this
+ in target format. real.c in GCC probably has the necessary
+ code. */
double v1, v2, v;
v1 = value_as_double (arg1);
v2 = value_as_double (arg2);
@@ -569,8 +592,8 @@ value_binop (arg1, arg2, op)
}
val = allocate_value (builtin_type_double);
- SWAP_TARGET_AND_HOST (&v, sizeof (v));
- *(double *) VALUE_CONTENTS_RAW (val) = v;
+ store_floating (VALUE_CONTENTS_RAW (val), TYPE_LENGTH (VALUE_TYPE (val)),
+ v);
}
else if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_BOOL
&&
@@ -598,11 +621,10 @@ value_binop (arg1, arg2, op)
error ("Invalid operation on booleans.");
}
- /* start-sanitize-chill (FIXME!) */
val = allocate_value (builtin_type_chill_bool);
- /* end-sanitize-chill */
- SWAP_TARGET_AND_HOST (&v, sizeof (v));
- *(LONGEST *) VALUE_CONTENTS_RAW (val) = v;
+ store_signed_integer (VALUE_CONTENTS_RAW (val),
+ TYPE_LENGTH (VALUE_TYPE (val)),
+ v);
}
else
/* Integral operations here. */
@@ -612,7 +634,7 @@ value_binop (arg1, arg2, op)
if ((TYPE_UNSIGNED (VALUE_TYPE (arg1))
|| TYPE_UNSIGNED (VALUE_TYPE (arg2)))
&& (TYPE_LENGTH (VALUE_TYPE (arg1)) >= sizeof (unsigned LONGEST)
- || TYPE_LENGTH (VALUE_TYPE (arg1)) >= sizeof (unsigned LONGEST)))
+ || TYPE_LENGTH (VALUE_TYPE (arg2)) >= sizeof (unsigned LONGEST)))
{
unsigned LONGEST v1, v2, v;
v1 = (unsigned LONGEST) value_as_long (arg1);
@@ -643,14 +665,12 @@ value_binop (arg1, arg2, op)
case BINOP_MOD:
/* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
v1 mod 0 has a defined value, v1. */
- /* start-sanitize-chill */
/* Chill specifies that v2 must be > 0, so check for that. */
if (current_language -> la_language == language_chill
&& value_as_long (arg2) <= 0)
{
error ("Second operand of MOD must be greater than zero.");
}
- /* end-sanitize-chill */
if (v2 == 0)
{
v = v1;
@@ -703,9 +723,10 @@ value_binop (arg1, arg2, op)
error ("Invalid binary operation on numbers.");
}
- val = allocate_value (BUILTIN_TYPE_UNSIGNED_LONGEST);
- SWAP_TARGET_AND_HOST (&v, sizeof (v));
- *(unsigned LONGEST *) VALUE_CONTENTS_RAW (val) = v;
+ val = allocate_value (unsigned_operation_result);
+ store_unsigned_integer (VALUE_CONTENTS_RAW (val),
+ TYPE_LENGTH (VALUE_TYPE (val)),
+ v);
}
else
{
@@ -738,14 +759,12 @@ value_binop (arg1, arg2, op)
case BINOP_MOD:
/* Knuth 1.2.4, integer only. Note that unlike the C '%' op,
X mod 0 has a defined value, X. */
- /* start-sanitize-chill */
/* Chill specifies that v2 must be > 0, so check for that. */
if (current_language -> la_language == language_chill
&& v2 <= 0)
{
error ("Second operand of MOD must be greater than zero.");
}
- /* end-sanitize-chill */
if (v2 == 0)
{
v = v1;
@@ -802,9 +821,10 @@ value_binop (arg1, arg2, op)
error ("Invalid binary operation on numbers.");
}
- val = allocate_value (BUILTIN_TYPE_LONGEST);
- SWAP_TARGET_AND_HOST (&v, sizeof (v));
- *(LONGEST *) VALUE_CONTENTS_RAW (val) = v;
+ val = allocate_value (signed_operation_result);
+ store_signed_integer (VALUE_CONTENTS_RAW (val),
+ TYPE_LENGTH (VALUE_TYPE (val)),
+ v);
}
}
@@ -968,3 +988,82 @@ value_complement (arg1)
return value_from_longest (VALUE_TYPE (arg1), ~ value_as_long (arg1));
}
+/* The INDEX'th bit of SET value whose VALUE_TYPE is TYPE,
+ and whose VALUE_CONTENTS is valaddr.
+ Return -1 if out of range, -2 other error. */
+
+int
+value_bit_index (type, valaddr, index)
+ struct type *type;
+ char *valaddr;
+ int index;
+{
+ struct type *range;
+ int low_bound, high_bound, bit_length;
+ LONGEST word;
+ range = TYPE_FIELD_TYPE (type, 0);
+ if (TYPE_CODE (range) != TYPE_CODE_RANGE)
+ return -2;
+ low_bound = TYPE_LOW_BOUND (range);
+ high_bound = TYPE_HIGH_BOUND (range);
+ if (index < low_bound || index > high_bound)
+ return -1;
+ bit_length = high_bound - low_bound + 1;
+ index -= low_bound;
+ if (bit_length <= TARGET_CHAR_BIT)
+ word = unpack_long (builtin_type_unsigned_char, valaddr);
+ else if (bit_length <= TARGET_SHORT_BIT)
+ word = unpack_long (builtin_type_unsigned_short, valaddr);
+ else
+ {
+ int word_start_index = (index / TARGET_INT_BIT) * TARGET_INT_BIT;
+ index -= word_start_index;
+ word = unpack_long (builtin_type_unsigned_int,
+ valaddr + (word_start_index / HOST_CHAR_BIT));
+ }
+#if BITS_BIG_ENDIAN
+ if (bit_length <= TARGET_CHAR_BIT)
+ index = TARGET_CHAR_BIT - 1 - index;
+ else if (bit_length <= TARGET_SHORT_BIT)
+ index = TARGET_SHORT_BIT - 1 - index;
+ else
+ index = TARGET_INT_BIT - 1 - index;
+#endif
+ return (word >> index) & 1;
+}
+
+value
+value_in (element, set)
+ value element, set;
+{
+ int member;
+ if (TYPE_CODE (VALUE_TYPE (set)) != TYPE_CODE_SET)
+ error ("Second argument of 'IN' has wrong type");
+ if (TYPE_CODE (VALUE_TYPE (element)) != TYPE_CODE_INT
+ && TYPE_CODE (VALUE_TYPE (element)) != TYPE_CODE_CHAR
+ && TYPE_CODE (VALUE_TYPE (element)) != TYPE_CODE_ENUM
+ && TYPE_CODE (VALUE_TYPE (element)) != TYPE_CODE_BOOL)
+ error ("First argument of 'IN' has wrong type");
+ member = value_bit_index (VALUE_TYPE (set), VALUE_CONTENTS (set),
+ value_as_long (element));
+ if (member < 0)
+ error ("First argument of 'IN' not in range");
+ return value_from_longest (builtin_type_int, member);
+}
+
+void
+_initialize_valarith ()
+{
+ /* Can't just call init_type because we wouldn't know what names to give
+ them. */
+ if (sizeof (LONGEST) > TARGET_LONG_BIT / HOST_CHAR_BIT)
+ {
+ unsigned_operation_result = builtin_type_unsigned_long_long;
+ signed_operation_result = builtin_type_long_long;
+ }
+ else
+ {
+ unsigned_operation_result = builtin_type_unsigned_long;
+ signed_operation_result = builtin_type_long;
+ }
+}
generated by cgit v1.1 at 2024-11-24 08:42:10 +0000