#include "gdbtypes.h"
#include "expression.h"
#include "target.h"
+#include "language.h"
#include <string.h>
+/* Define whether or not the C operator '/' truncates towards zero for
+ differently signed operands (truncation direction is undefined in C). */
+
+#ifndef TRUNCATION_TOWARDS_ZERO
+#define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2)
+#endif
+
static value
value_subscripted_rvalue PARAMS ((value, value));
return value_binop (arg1, arg2, BINOP_SUB);
}
-/* Return the value of ARRAY[IDX]. */
+/* Return the value of ARRAY[IDX].
+ See comments in value_coerce_array() for rationale for reason for
+ doing lower bounds adjustment here rather than there.
+ FIXME: Perhaps we should validate that the index is valid and if
+ verbosity is set, warn about invalid indices (but still use them). */
value
value_subscript (array, idx)
value array, idx;
{
- if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY
- && VALUE_LVAL (array) != lval_memory)
- return value_subscripted_rvalue (array, idx);
- else
- return value_ind (value_add (array, idx));
+ int lowerbound;
+ value bound;
+ struct type *range_type;
+
+ if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY)
+ {
+ range_type = TYPE_FIELD_TYPE (VALUE_TYPE (array), 0);
+ lowerbound = TYPE_FIELD_BITPOS (range_type, 0);
+ if (lowerbound != 0)
+ {
+ bound = value_from_longest (builtin_type_int, (LONGEST) lowerbound);
+ idx = value_sub (idx, bound);
+ }
+ if (VALUE_LVAL (array) != lval_memory)
+ {
+ return value_subscripted_rvalue (array, idx);
+ }
+ }
+ return value_ind (value_add (array, idx));
}
/* Return the value of EXPR[IDX], expr an aggregate rvalue
error ("no such vector element");
v = allocate_value (elt_type);
- (void) memcpy (VALUE_CONTENTS (v), VALUE_CONTENTS (array) + elt_offs,
- elt_size);
+ memcpy (VALUE_CONTENTS (v), VALUE_CONTENTS (array) + elt_offs, elt_size);
if (VALUE_LVAL (array) == lval_internalvar)
VALUE_LVAL (v) = lval_internalvar_component;
ptr = tstr+8;
switch (op)
{
- case BINOP_ADD: strcpy(ptr,"+"); break;
- case BINOP_SUB: strcpy(ptr,"-"); break;
- case BINOP_MUL: strcpy(ptr,"*"); break;
- case BINOP_DIV: strcpy(ptr,"/"); break;
- case BINOP_REM: strcpy(ptr,"%"); break;
- case BINOP_LSH: strcpy(ptr,"<<"); break;
- case BINOP_RSH: strcpy(ptr,">>"); break;
- case BINOP_LOGAND: strcpy(ptr,"&"); break;
- case BINOP_LOGIOR: strcpy(ptr,"|"); break;
- case BINOP_LOGXOR: strcpy(ptr,"^"); break;
- case BINOP_AND: strcpy(ptr,"&&"); break;
- case BINOP_OR: strcpy(ptr,"||"); break;
- case BINOP_MIN: strcpy(ptr,"<?"); break;
- case BINOP_MAX: strcpy(ptr,">?"); break;
- case BINOP_ASSIGN: strcpy(ptr,"="); break;
+ case BINOP_ADD: strcpy(ptr,"+"); break;
+ case BINOP_SUB: strcpy(ptr,"-"); break;
+ case BINOP_MUL: strcpy(ptr,"*"); break;
+ case BINOP_DIV: strcpy(ptr,"/"); break;
+ case BINOP_REM: strcpy(ptr,"%"); break;
+ case BINOP_LSH: strcpy(ptr,"<<"); break;
+ case BINOP_RSH: strcpy(ptr,">>"); break;
+ case BINOP_BITWISE_AND: strcpy(ptr,"&"); break;
+ case BINOP_BITWISE_IOR: strcpy(ptr,"|"); break;
+ case BINOP_BITWISE_XOR: strcpy(ptr,"^"); break;
+ case BINOP_LOGICAL_AND: strcpy(ptr,"&&"); break;
+ case BINOP_LOGICAL_OR: strcpy(ptr,"||"); break;
+ case BINOP_MIN: strcpy(ptr,"<?"); break;
+ case BINOP_MAX: strcpy(ptr,">?"); break;
+ case BINOP_ASSIGN: strcpy(ptr,"="); break;
case BINOP_ASSIGN_MODIFY:
switch (otherop)
{
- case BINOP_ADD: strcpy(ptr,"+="); break;
- case BINOP_SUB: strcpy(ptr,"-="); break;
- case BINOP_MUL: strcpy(ptr,"*="); break;
- case BINOP_DIV: strcpy(ptr,"/="); break;
- case BINOP_REM: strcpy(ptr,"%="); break;
- case BINOP_LOGAND: strcpy(ptr,"&="); break;
- case BINOP_LOGIOR: strcpy(ptr,"|="); break;
- case BINOP_LOGXOR: strcpy(ptr,"^="); break;
+ case BINOP_ADD: strcpy(ptr,"+="); break;
+ case BINOP_SUB: strcpy(ptr,"-="); break;
+ case BINOP_MUL: strcpy(ptr,"*="); break;
+ case BINOP_DIV: strcpy(ptr,"/="); break;
+ case BINOP_REM: strcpy(ptr,"%="); break;
+ case BINOP_BITWISE_AND: strcpy(ptr,"&="); break;
+ case BINOP_BITWISE_IOR: strcpy(ptr,"|="); break;
+ case BINOP_BITWISE_XOR: strcpy(ptr,"^="); break;
+ case BINOP_MOD: /* invalid */
default:
error ("Invalid binary operation specified.");
}
case BINOP_GTR: strcpy(ptr,">"); break;
case BINOP_GEQ: strcpy(ptr,">="); break;
case BINOP_LEQ: strcpy(ptr,"<="); break;
+ case BINOP_MOD: /* invalid */
default:
error ("Invalid binary operation specified.");
}
case UNOP_PREDECREMENT: strcpy(ptr,"++"); break;
case UNOP_POSTINCREMENT: strcpy(ptr,"++"); break;
case UNOP_POSTDECREMENT: strcpy(ptr,"++"); break;
- case UNOP_ZEROP: strcpy(ptr,"!"); break;
- case UNOP_LOGNOT: strcpy(ptr,"~"); break;
- case UNOP_NEG: strcpy(ptr,"-"); break;
+ case UNOP_LOGICAL_NOT: strcpy(ptr,"!"); break;
+ case UNOP_COMPLEMENT: strcpy(ptr,"~"); break;
+ case UNOP_NEG: strcpy(ptr,"-"); break;
default:
error ("Invalid binary operation specified.");
}
error ("member function %s not found", tstr);
return 0; /* For lint -- never reached */
}
+
+\f
+/* Concatenate two values with the following conditions:
+
+ (1) Both values must be either bitstring values or character string
+ values and the resulting value consists of the concatenation of
+ ARG1 followed by ARG2.
+
+ or
+
+ One value must be an integer value and the other value must be
+ either a bitstring value or character string value, which is
+ to be repeated by the number of times specified by the integer
+ value.
+
+
+ (2) Boolean values are also allowed and are treated as bit string
+ values of length 1.
+
+ (3) Character values are also allowed and are treated as character
+ string values of length 1.
+*/
+
+value
+value_concat (arg1, arg2)
+ value arg1, arg2;
+{
+ register value inval1, inval2, outval;
+ int inval1len, inval2len;
+ int count, idx;
+ char *ptr;
+ char inchar;
+
+ /* First figure out if we are dealing with two values to be concatenated
+ or a repeat count and a value to be repeated. INVAL1 is set to the
+ first of two concatenated values, or the repeat count. INVAL2 is set
+ to the second of the two concatenated values or the value to be
+ repeated. */
+
+ if (TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_INT)
+ {
+ inval1 = arg2;
+ inval2 = arg1;
+ }
+ else
+ {
+ inval1 = arg1;
+ inval2 = arg2;
+ }
+
+ /* Now process the input values. */
+
+ if (TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_INT)
+ {
+ /* We have a repeat count. Validate the second value and then
+ construct a value repeated that many times. */
+ if (TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_STRING
+ || TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_CHAR)
+ {
+ count = longest_to_int (value_as_long (inval1));
+ inval2len = TYPE_LENGTH (VALUE_TYPE (inval2));
+ ptr = (char *) alloca (count * inval2len);
+ if (TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_CHAR)
+ {
+ inchar = (char) unpack_long (VALUE_TYPE (inval2),
+ VALUE_CONTENTS (inval2));
+ for (idx = 0; idx < count; idx++)
+ {
+ *(ptr + idx) = inchar;
+ }
+ }
+ else
+ {
+ for (idx = 0; idx < count; idx++)
+ {
+ memcpy (ptr + (idx * inval2len), VALUE_CONTENTS (inval2),
+ inval2len);
+ }
+ }
+ outval = value_string (ptr, count * inval2len);
+ }
+ else if (TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_BITSTRING
+ || TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_BOOL)
+ {
+ error ("unimplemented support for bitstring/boolean repeats");
+ }
+ else
+ {
+ error ("can't repeat values of that type");
+ }
+ }
+ else if (TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_STRING
+ || TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_CHAR)
+ {
+ /* We have two character strings to concatenate. */
+ if (TYPE_CODE (VALUE_TYPE (inval2)) != TYPE_CODE_STRING
+ && TYPE_CODE (VALUE_TYPE (inval2)) != TYPE_CODE_CHAR)
+ {
+ error ("Strings can only be concatenated with other strings.");
+ }
+ inval1len = TYPE_LENGTH (VALUE_TYPE (inval1));
+ inval2len = TYPE_LENGTH (VALUE_TYPE (inval2));
+ ptr = (char *) alloca (inval1len + inval2len);
+ if (TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_CHAR)
+ {
+ *ptr = (char) unpack_long (VALUE_TYPE (inval1), VALUE_CONTENTS (inval1));
+ }
+ else
+ {
+ memcpy (ptr, VALUE_CONTENTS (inval1), inval1len);
+ }
+ if (TYPE_CODE (VALUE_TYPE (inval2)) == TYPE_CODE_CHAR)
+ {
+ *(ptr + inval1len) =
+ (char) unpack_long (VALUE_TYPE (inval2), VALUE_CONTENTS (inval2));
+ }
+ else
+ {
+ memcpy (ptr + inval1len, VALUE_CONTENTS (inval2), inval2len);
+ }
+ outval = value_string (ptr, inval1len + inval2len);
+ }
+ else if (TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_BITSTRING
+ || TYPE_CODE (VALUE_TYPE (inval1)) == TYPE_CODE_BOOL)
+ {
+ /* We have two bitstrings to concatenate. */
+ if (TYPE_CODE (VALUE_TYPE (inval2)) != TYPE_CODE_BITSTRING
+ && TYPE_CODE (VALUE_TYPE (inval2)) != TYPE_CODE_BOOL)
+ {
+ error ("Bitstrings or booleans can only be concatenated with other bitstrings or booleans.");
+ }
+ error ("unimplemented support for bitstring/boolean concatenation.");
+ }
+ else
+ {
+ /* We don't know how to concatenate these operands. */
+ error ("illegal operands for concatenation.");
+ }
+ return (outval);
+}
+
\f
-/* Perform a binary operation on two integers or two floats.
+/* Perform a binary operation on two operands which have reasonable
+ representations as integers or floats. This includes booleans,
+ characters, integers, or floats.
Does not support addition and subtraction on pointers;
use value_add or value_sub if you want to handle those possibilities. */
if ((TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_FLT
&&
- TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_INT)
+ TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_CHAR
+ &&
+ TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_INT
+ &&
+ TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_BOOL)
||
(TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_FLT
&&
- TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_INT))
- error ("Argument to arithmetic operation not a number.");
+ TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_CHAR
+ &&
+ TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_INT
+ &&
+ TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_BOOL))
+ error ("Argument to arithmetic operation not a number or boolean.");
if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_FLT
||
SWAP_TARGET_AND_HOST (&v, sizeof (v));
*(double *) VALUE_CONTENTS_RAW (val) = v;
}
+ else if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_BOOL
+ &&
+ TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_BOOL)
+ {
+ LONGEST v1, v2, v;
+ v1 = value_as_long (arg1);
+ v2 = value_as_long (arg2);
+
+ switch (op)
+ {
+ case BINOP_BITWISE_AND:
+ v = v1 & v2;
+ break;
+
+ case BINOP_BITWISE_IOR:
+ v = v1 | v2;
+ break;
+
+ case BINOP_BITWISE_XOR:
+ v = v1 ^ v2;
+ break;
+
+ default:
+ 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;
+ }
else
/* Integral operations here. */
+ /* FIXME: Also mixed integral/booleans, with result an integer. */
{
/* Should we promote to unsigned longest? */
if ((TYPE_UNSIGNED (VALUE_TYPE (arg1))
v = v1 % v2;
break;
+ 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;
+ }
+ else
+ {
+ v = v1/v2;
+ /* Note floor(v1/v2) == v1/v2 for unsigned. */
+ v = v1 - (v2 * v);
+ }
+ break;
+
case BINOP_LSH:
v = v1 << v2;
break;
v = v1 >> v2;
break;
- case BINOP_LOGAND:
+ case BINOP_BITWISE_AND:
v = v1 & v2;
break;
- case BINOP_LOGIOR:
+ case BINOP_BITWISE_IOR:
v = v1 | v2;
break;
- case BINOP_LOGXOR:
+ case BINOP_BITWISE_XOR:
v = v1 ^ v2;
break;
- case BINOP_AND:
+ case BINOP_LOGICAL_AND:
v = v1 && v2;
break;
- case BINOP_OR:
+ case BINOP_LOGICAL_OR:
v = v1 || v2;
break;
v = v1 % v2;
break;
+ 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;
+ }
+ else
+ {
+ v = v1/v2;
+ /* Compute floor. */
+ if (TRUNCATION_TOWARDS_ZERO && (v < 0) && ((v1 % v2) != 0))
+ {
+ v--;
+ }
+ v = v1 - (v2 * v);
+ }
+ break;
+
case BINOP_LSH:
v = v1 << v2;
break;
v = v1 >> v2;
break;
- case BINOP_LOGAND:
+ case BINOP_BITWISE_AND:
v = v1 & v2;
break;
- case BINOP_LOGIOR:
+ case BINOP_BITWISE_IOR:
v = v1 | v2;
break;
- case BINOP_LOGXOR:
+ case BINOP_BITWISE_XOR:
v = v1 ^ v2;
break;
- case BINOP_AND:
+ case BINOP_LOGICAL_AND:
v = v1 && v2;
break;
- case BINOP_OR:
+ case BINOP_LOGICAL_OR:
v = v1 || v2;
break;
/* Simulate the C operator ! -- return 1 if ARG1 contains zero. */
int
-value_zerop (arg1)
+value_logical_not (arg1)
value arg1;
{
register int len;
}
value
-value_lognot (arg1)
+value_complement (arg1)
register value arg1;
{
COERCE_ENUM (arg1);
projects / deliverable / binutils-gdb.git / blobdiff