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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/valarith.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/valarith.c')
-rw-r--r--gdb/valarith.c1213
1 files changed, 0 insertions, 1213 deletions
diff --git a/gdb/valarith.c b/gdb/valarith.c
deleted file mode 100644
index c03d0a4..0000000
--- a/gdb/valarith.c
+++ /dev/null
@@ -1,1213 +0,0 @@
-/* Perform arithmetic and other operations on values, for GDB.
- Copyright 1986, 1989, 1991, 1992, 1993, 1994
- Free Software Foundation, Inc.
-
-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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "value.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "expression.h"
-#include "target.h"
-#include "language.h"
-#include "demangle.h"
-#include "gdb_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_ptr value_subscripted_rvalue PARAMS ((value_ptr, value_ptr, int));
-
-
-value_ptr
-value_add (arg1, arg2)
- value_ptr arg1, arg2;
-{
- register value_ptr valint, valptr;
- register int len;
- struct type *type1, *type2, *valptrtype;
-
- COERCE_NUMBER (arg1);
- COERCE_NUMBER (arg2);
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
-
- if ((TYPE_CODE (type1) == TYPE_CODE_PTR
- || TYPE_CODE (type2) == TYPE_CODE_PTR)
- &&
- (TYPE_CODE (type1) == TYPE_CODE_INT
- || TYPE_CODE (type2) == TYPE_CODE_INT))
- /* Exactly one argument is a pointer, and one is an integer. */
- {
- if (TYPE_CODE (type1) == TYPE_CODE_PTR)
- {
- valptr = arg1;
- valint = arg2;
- valptrtype = type1;
- }
- else
- {
- valptr = arg2;
- valint = arg1;
- valptrtype = type2;
- }
- len = TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (valptrtype)));
- if (len == 0) len = 1; /* For (void *) */
- return value_from_longest (valptrtype,
- value_as_long (valptr)
- + (len * value_as_long (valint)));
- }
-
- return value_binop (arg1, arg2, BINOP_ADD);
-}
-
-value_ptr
-value_sub (arg1, arg2)
- value_ptr arg1, arg2;
-{
- struct type *type1, *type2;
- COERCE_NUMBER (arg1);
- COERCE_NUMBER (arg2);
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
-
- if (TYPE_CODE (type1) == TYPE_CODE_PTR)
- {
- if (TYPE_CODE (type2) == TYPE_CODE_INT)
- {
- /* pointer - integer. */
- LONGEST sz = TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type1)));
- return value_from_longest
- (VALUE_TYPE (arg1),
- value_as_long (arg1) - (sz * value_as_long (arg2)));
- }
- else if (TYPE_CODE (type2) == TYPE_CODE_PTR
- && TYPE_LENGTH (TYPE_TARGET_TYPE (type1))
- == TYPE_LENGTH (TYPE_TARGET_TYPE (type2)))
- {
- /* pointer to <type x> - pointer to <type x>. */
- LONGEST sz = TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type1)));
- return value_from_longest
- (builtin_type_long, /* FIXME -- should be ptrdiff_t */
- (value_as_long (arg1) - value_as_long (arg2)) / sz);
- }
- else
- {
- error ("\
-First argument of `-' is a pointer and second argument is neither\n\
-an integer nor a pointer of the same type.");
- }
- }
-
- return value_binop (arg1, arg2, BINOP_SUB);
-}
-
-/* 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_ptr
-value_subscript (array, idx)
- value_ptr array, idx;
-{
- value_ptr bound;
- int c_style = current_language->c_style_arrays;
- struct type *tarray;
-
- COERCE_REF (array);
- tarray = check_typedef (VALUE_TYPE (array));
- COERCE_VARYING_ARRAY (array, tarray);
-
- if (TYPE_CODE (tarray) == TYPE_CODE_ARRAY
- || TYPE_CODE (tarray) == TYPE_CODE_STRING)
- {
- struct type *range_type = TYPE_INDEX_TYPE (tarray);
- LONGEST lowerbound, upperbound;
- get_discrete_bounds (range_type, &lowerbound, &upperbound);
-
- if (VALUE_LVAL (array) != lval_memory)
- return value_subscripted_rvalue (array, idx, lowerbound);
-
- if (c_style == 0)
- {
- LONGEST index = value_as_long (idx);
- if (index >= lowerbound && index <= upperbound)
- return value_subscripted_rvalue (array, idx, lowerbound);
- warning ("array or string index out of range");
- /* fall doing C stuff */
- c_style = 1;
- }
-
- if (lowerbound != 0)
- {
- bound = value_from_longest (builtin_type_int, (LONGEST) lowerbound);
- idx = value_sub (idx, bound);
- }
-
- array = value_coerce_array (array);
- }
-
- if (TYPE_CODE (tarray) == TYPE_CODE_BITSTRING)
- {
- struct type *range_type = TYPE_INDEX_TYPE (tarray);
- LONGEST index = value_as_long (idx);
- value_ptr v;
- int offset, byte, bit_index;
- LONGEST lowerbound, upperbound;
- get_discrete_bounds (range_type, &lowerbound, &upperbound);
- if (index < lowerbound || index > upperbound)
- error ("bitstring index out of range");
- index -= lowerbound;
- offset = index / TARGET_CHAR_BIT;
- byte = *((char*)VALUE_CONTENTS (array) + offset);
- bit_index = index % TARGET_CHAR_BIT;
- byte >>= (BITS_BIG_ENDIAN ? TARGET_CHAR_BIT - 1 - bit_index : bit_index);
- v = value_from_longest (LA_BOOL_TYPE, byte & 1);
- VALUE_BITPOS (v) = bit_index;
- VALUE_BITSIZE (v) = 1;
- VALUE_LVAL (v) = VALUE_LVAL (array);
- if (VALUE_LVAL (array) == lval_internalvar)
- VALUE_LVAL (v) = lval_internalvar_component;
- VALUE_ADDRESS (v) = VALUE_ADDRESS (array);
- VALUE_OFFSET (v) = offset + VALUE_OFFSET (array);
- return v;
- }
-
- if (c_style)
- return value_ind (value_add (array, idx));
- else
- error ("not an array or string");
-}
-
-/* Return the value of EXPR[IDX], expr an aggregate rvalue
- (eg, a vector register). This routine used to promote floats
- to doubles, but no longer does. */
-
-static value_ptr
-value_subscripted_rvalue (array, idx, lowerbound)
- value_ptr array, idx;
- int lowerbound;
-{
- struct type *array_type = check_typedef (VALUE_TYPE (array));
- struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (array_type));
- unsigned int elt_size = TYPE_LENGTH (elt_type);
- LONGEST index = value_as_long (idx);
- unsigned int elt_offs = elt_size * longest_to_int (index - lowerbound);
- value_ptr v;
-
- if (index < lowerbound || elt_offs >= TYPE_LENGTH (array_type))
- error ("no such vector element");
-
- v = allocate_value (elt_type);
- if (VALUE_LAZY (array))
- VALUE_LAZY (v) = 1;
- else
- memcpy (VALUE_CONTENTS (v), VALUE_CONTENTS (array) + elt_offs, elt_size);
-
- if (VALUE_LVAL (array) == lval_internalvar)
- VALUE_LVAL (v) = lval_internalvar_component;
- else
- VALUE_LVAL (v) = VALUE_LVAL (array);
- VALUE_ADDRESS (v) = VALUE_ADDRESS (array);
- VALUE_OFFSET (v) = VALUE_OFFSET (array) + elt_offs;
- return v;
-}
-
-/* Check to see if either argument is a structure. This is called so
- we know whether to go ahead with the normal binop or look for a
- user defined function instead.
-
- For now, we do not overload the `=' operator. */
-
-int
-binop_user_defined_p (op, arg1, arg2)
- enum exp_opcode op;
- value_ptr arg1, arg2;
-{
- struct type *type1, *type2;
- if (op == BINOP_ASSIGN || op == BINOP_CONCAT)
- return 0;
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
- return (TYPE_CODE (type1) == TYPE_CODE_STRUCT
- || TYPE_CODE (type2) == TYPE_CODE_STRUCT
- || (TYPE_CODE (type1) == TYPE_CODE_REF
- && TYPE_CODE (TYPE_TARGET_TYPE (type1)) == TYPE_CODE_STRUCT)
- || (TYPE_CODE (type2) == TYPE_CODE_REF
- && TYPE_CODE (TYPE_TARGET_TYPE (type2)) == TYPE_CODE_STRUCT));
-}
-
-/* Check to see if argument is a structure. This is called so
- we know whether to go ahead with the normal unop or look for a
- user defined function instead.
-
- For now, we do not overload the `&' operator. */
-
-int unop_user_defined_p (op, arg1)
- enum exp_opcode op;
- value_ptr arg1;
-{
- struct type *type1;
- if (op == UNOP_ADDR)
- return 0;
- type1 = check_typedef (VALUE_TYPE (arg1));
- for (;;)
- {
- if (TYPE_CODE (type1) == TYPE_CODE_STRUCT)
- return 1;
- else if (TYPE_CODE (type1) == TYPE_CODE_REF)
- type1 = TYPE_TARGET_TYPE (type1);
- else
- return 0;
- }
-}
-
-/* We know either arg1 or arg2 is a structure, so try to find the right
- user defined function. Create an argument vector that calls
- arg1.operator @ (arg1,arg2) and return that value (where '@' is any
- binary operator which is legal for GNU C++).
-
- OP is the operatore, and if it is BINOP_ASSIGN_MODIFY, then OTHEROP
- is the opcode saying how to modify it. Otherwise, OTHEROP is
- unused. */
-
-value_ptr
-value_x_binop (arg1, arg2, op, otherop)
- value_ptr arg1, arg2;
- enum exp_opcode op, otherop;
-{
- value_ptr * argvec;
- char *ptr;
- char tstr[13];
- int static_memfuncp;
-
- COERCE_REF (arg1);
- COERCE_REF (arg2);
- COERCE_ENUM (arg1);
- COERCE_ENUM (arg2);
-
- /* now we know that what we have to do is construct our
- arg vector and find the right function to call it with. */
-
- if (TYPE_CODE (check_typedef (VALUE_TYPE (arg1))) != TYPE_CODE_STRUCT)
- error ("Can't do that binary op on that type"); /* FIXME be explicit */
-
- argvec = (value_ptr *) alloca (sizeof (value_ptr) * 4);
- argvec[1] = value_addr (arg1);
- argvec[2] = arg2;
- argvec[3] = 0;
-
- /* make the right function name up */
- strcpy(tstr, "operator__");
- 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_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_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.");
- }
- break;
- case BINOP_SUBSCRIPT: strcpy(ptr,"[]"); break;
- case BINOP_EQUAL: strcpy(ptr,"=="); break;
- case BINOP_NOTEQUAL: strcpy(ptr,"!="); break;
- case BINOP_LESS: strcpy(ptr,"<"); break;
- 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.");
- }
-
- argvec[0] = value_struct_elt (&arg1, argvec+1, tstr, &static_memfuncp, "structure");
-
- if (argvec[0])
- {
- if (static_memfuncp)
- {
- argvec[1] = argvec[0];
- argvec++;
- }
- return call_function_by_hand (argvec[0], 2 - static_memfuncp, argvec + 1);
- }
- error ("member function %s not found", tstr);
-#ifdef lint
- return call_function_by_hand (argvec[0], 2 - static_memfuncp, argvec + 1);
-#endif
-}
-
-/* We know that arg1 is a structure, so try to find a unary user
- defined operator that matches the operator in question.
- Create an argument vector that calls arg1.operator @ (arg1)
- and return that value (where '@' is (almost) any unary operator which
- is legal for GNU C++). */
-
-value_ptr
-value_x_unop (arg1, op)
- value_ptr arg1;
- enum exp_opcode op;
-{
- value_ptr * argvec;
- char *ptr, *mangle_ptr;
- char tstr[13], mangle_tstr[13];
- int static_memfuncp;
-
- COERCE_REF (arg1);
- COERCE_ENUM (arg1);
-
- /* now we know that what we have to do is construct our
- arg vector and find the right function to call it with. */
-
- if (TYPE_CODE (check_typedef (VALUE_TYPE (arg1))) != TYPE_CODE_STRUCT)
- error ("Can't do that unary op on that type"); /* FIXME be explicit */
-
- argvec = (value_ptr *) alloca (sizeof (value_ptr) * 3);
- argvec[1] = value_addr (arg1);
- argvec[2] = 0;
-
- /* 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;
- case UNOP_PREDECREMENT: strcpy(ptr,"++"); break;
- case UNOP_POSTINCREMENT: strcpy(ptr,"++"); break;
- case UNOP_POSTDECREMENT: 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.");
- }
-
- argvec[0] = value_struct_elt (&arg1, argvec+1, tstr, &static_memfuncp, "structure");
-
- if (argvec[0])
- {
- if (static_memfuncp)
- {
- argvec[1] = argvec[0];
- argvec++;
- }
- return call_function_by_hand (argvec[0], 1 - static_memfuncp, argvec + 1);
- }
- error ("member function %s not found", tstr);
- return 0; /* For lint -- never reached */
-}
-
-
-/* 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_ptr
-value_concat (arg1, arg2)
- value_ptr arg1, arg2;
-{
- register value_ptr inval1, inval2, outval;
- int inval1len, inval2len;
- int count, idx;
- char *ptr;
- char inchar;
- struct type *type1 = check_typedef (VALUE_TYPE (arg1));
- struct type *type2 = check_typedef (VALUE_TYPE (arg2));
-
- COERCE_VARYING_ARRAY (arg1, type1);
- COERCE_VARYING_ARRAY (arg2, type2);
-
- /* 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 (type2) == TYPE_CODE_INT)
- {
- struct type *tmp = type1;
- type1 = tmp;
- tmp = type2;
- inval1 = arg2;
- inval2 = arg1;
- }
- else
- {
- inval1 = arg1;
- inval2 = arg2;
- }
-
- /* Now process the input values. */
-
- if (TYPE_CODE (type1) == TYPE_CODE_INT)
- {
- /* We have a repeat count. Validate the second value and then
- construct a value repeated that many times. */
- if (TYPE_CODE (type2) == TYPE_CODE_STRING
- || TYPE_CODE (type2) == TYPE_CODE_CHAR)
- {
- count = longest_to_int (value_as_long (inval1));
- inval2len = TYPE_LENGTH (type2);
- ptr = (char *) alloca (count * inval2len);
- if (TYPE_CODE (type2) == TYPE_CODE_CHAR)
- {
- inchar = (char) unpack_long (type2,
- 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 (type2) == TYPE_CODE_BITSTRING
- || TYPE_CODE (type2) == TYPE_CODE_BOOL)
- {
- error ("unimplemented support for bitstring/boolean repeats");
- }
- else
- {
- error ("can't repeat values of that type");
- }
- }
- else if (TYPE_CODE (type1) == TYPE_CODE_STRING
- || TYPE_CODE (type1) == TYPE_CODE_CHAR)
- {
- /* We have two character strings to concatenate. */
- if (TYPE_CODE (type2) != TYPE_CODE_STRING
- && TYPE_CODE (type2) != TYPE_CODE_CHAR)
- {
- error ("Strings can only be concatenated with other strings.");
- }
- inval1len = TYPE_LENGTH (type1);
- inval2len = TYPE_LENGTH (type2);
- ptr = (char *) alloca (inval1len + inval2len);
- if (TYPE_CODE (type1) == TYPE_CODE_CHAR)
- {
- *ptr = (char) unpack_long (type1, VALUE_CONTENTS (inval1));
- }
- else
- {
- memcpy (ptr, VALUE_CONTENTS (inval1), inval1len);
- }
- if (TYPE_CODE (type2) == TYPE_CODE_CHAR)
- {
- *(ptr + inval1len) =
- (char) unpack_long (type2, VALUE_CONTENTS (inval2));
- }
- else
- {
- memcpy (ptr + inval1len, VALUE_CONTENTS (inval2), inval2len);
- }
- outval = value_string (ptr, inval1len + inval2len);
- }
- else if (TYPE_CODE (type1) == TYPE_CODE_BITSTRING
- || TYPE_CODE (type1) == TYPE_CODE_BOOL)
- {
- /* We have two bitstrings to concatenate. */
- if (TYPE_CODE (type2) != TYPE_CODE_BITSTRING
- && TYPE_CODE (type2) != 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);
-}
-
-
-
-/* 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. */
-
-value_ptr
-value_binop (arg1, arg2, op)
- value_ptr arg1, arg2;
- enum exp_opcode op;
-{
- register value_ptr val;
- struct type *type1, *type2;
-
- COERCE_REF (arg1);
- COERCE_REF (arg2);
- COERCE_ENUM (arg1);
- COERCE_ENUM (arg2);
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
-
- if ((TYPE_CODE (type1) != TYPE_CODE_FLT
- && TYPE_CODE (type1) != TYPE_CODE_CHAR
- && TYPE_CODE (type1) != TYPE_CODE_INT
- && TYPE_CODE (type1) != TYPE_CODE_BOOL
- && TYPE_CODE (type1) != TYPE_CODE_RANGE)
- ||
- (TYPE_CODE (type2) != TYPE_CODE_FLT
- && TYPE_CODE (type2) != TYPE_CODE_CHAR
- && TYPE_CODE (type2) != TYPE_CODE_INT
- && TYPE_CODE (type2) != TYPE_CODE_BOOL
- && TYPE_CODE (type2) != TYPE_CODE_RANGE))
- error ("Argument to arithmetic operation not a number or boolean.");
-
- if (TYPE_CODE (type1) == TYPE_CODE_FLT
- ||
- TYPE_CODE (type2) == 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. */
- DOUBLEST v1, v2, v;
- v1 = value_as_double (arg1);
- v2 = value_as_double (arg2);
- switch (op)
- {
- case BINOP_ADD:
- v = v1 + v2;
- break;
-
- case BINOP_SUB:
- v = v1 - v2;
- break;
-
- case BINOP_MUL:
- v = v1 * v2;
- break;
-
- case BINOP_DIV:
- v = v1 / v2;
- break;
-
- default:
- error ("Integer-only operation on floating point number.");
- }
-
- /* If either arg was long double, make sure that value is also long
- double. */
-
- if (TYPE_LENGTH(type1) * 8 > TARGET_DOUBLE_BIT
- || TYPE_LENGTH(type2) * 8 > TARGET_DOUBLE_BIT)
- val = allocate_value (builtin_type_long_double);
- else
- val = allocate_value (builtin_type_double);
-
- store_floating (VALUE_CONTENTS_RAW (val), TYPE_LENGTH (VALUE_TYPE (val)),
- v);
- }
- else if (TYPE_CODE (type1) == TYPE_CODE_BOOL
- &&
- TYPE_CODE (type2) == 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.");
- }
-
- val = allocate_value (type1);
- store_signed_integer (VALUE_CONTENTS_RAW (val),
- TYPE_LENGTH (type1),
- v);
- }
- else
- /* Integral operations here. */
- /* FIXME: Also mixed integral/booleans, with result an integer. */
- /* FIXME: This implements ANSI C rules (also correct for C++).
- What about FORTRAN and chill? */
- {
- unsigned int promoted_len1 = TYPE_LENGTH (type1);
- unsigned int promoted_len2 = TYPE_LENGTH (type2);
- int is_unsigned1 = TYPE_UNSIGNED (type1);
- int is_unsigned2 = TYPE_UNSIGNED (type2);
- unsigned int result_len;
- int unsigned_operation;
-
- /* Determine type length and signedness after promotion for
- both operands. */
- if (promoted_len1 < TYPE_LENGTH (builtin_type_int))
- {
- is_unsigned1 = 0;
- promoted_len1 = TYPE_LENGTH (builtin_type_int);
- }
- if (promoted_len2 < TYPE_LENGTH (builtin_type_int))
- {
- is_unsigned2 = 0;
- promoted_len2 = TYPE_LENGTH (builtin_type_int);
- }
-
- /* Determine type length of the result, and if the operation should
- be done unsigned.
- Use the signedness of the operand with the greater length.
- If both operands are of equal length, use unsigned operation
- if one of the operands is unsigned. */
- if (promoted_len1 > promoted_len2)
- {
- unsigned_operation = is_unsigned1;
- result_len = promoted_len1;
- }
- else if (promoted_len2 > promoted_len1)
- {
- unsigned_operation = is_unsigned2;
- result_len = promoted_len2;
- }
- else
- {
- unsigned_operation = is_unsigned1 || is_unsigned2;
- result_len = promoted_len1;
- }
-
- if (unsigned_operation)
- {
- unsigned LONGEST v1, v2, v;
- v1 = (unsigned LONGEST) value_as_long (arg1);
- v2 = (unsigned LONGEST) value_as_long (arg2);
-
- /* Truncate values to the type length of the result. */
- if (result_len < sizeof (unsigned LONGEST))
- {
- v1 &= ((LONGEST) 1 << HOST_CHAR_BIT * result_len) - 1;
- v2 &= ((LONGEST) 1 << HOST_CHAR_BIT * result_len) - 1;
- }
-
- switch (op)
- {
- case BINOP_ADD:
- v = v1 + v2;
- break;
-
- case BINOP_SUB:
- v = v1 - v2;
- break;
-
- case BINOP_MUL:
- v = v1 * v2;
- break;
-
- case BINOP_DIV:
- v = v1 / v2;
- break;
-
- case BINOP_REM:
- 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. */
- /* 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.");
- }
- 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;
-
- case BINOP_RSH:
- v = v1 >> v2;
- break;
-
- case BINOP_BITWISE_AND:
- v = v1 & v2;
- break;
-
- case BINOP_BITWISE_IOR:
- v = v1 | v2;
- break;
-
- case BINOP_BITWISE_XOR:
- v = v1 ^ v2;
- break;
-
- case BINOP_LOGICAL_AND:
- v = v1 && v2;
- break;
-
- case BINOP_LOGICAL_OR:
- v = v1 || v2;
- break;
-
- case BINOP_MIN:
- v = v1 < v2 ? v1 : v2;
- break;
-
- case BINOP_MAX:
- v = v1 > v2 ? v1 : v2;
- break;
-
- case BINOP_EQUAL:
- v = v1 == v2;
- break;
-
- case BINOP_LESS:
- v = v1 < v2;
- break;
-
- default:
- error ("Invalid binary operation on numbers.");
- }
-
- /* 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). */
-
- /* Can't just call init_type because we wouldn't know what
- name to give the type. */
- val = allocate_value
- (result_len > TARGET_LONG_BIT / HOST_CHAR_BIT
- ? builtin_type_unsigned_long_long
- : builtin_type_unsigned_long);
- store_unsigned_integer (VALUE_CONTENTS_RAW (val),
- TYPE_LENGTH (VALUE_TYPE (val)),
- v);
- }
- else
- {
- LONGEST v1, v2, v;
- v1 = value_as_long (arg1);
- v2 = value_as_long (arg2);
-
- switch (op)
- {
- case BINOP_ADD:
- v = v1 + v2;
- break;
-
- case BINOP_SUB:
- v = v1 - v2;
- break;
-
- case BINOP_MUL:
- v = v1 * v2;
- break;
-
- case BINOP_DIV:
- v = v1 / v2;
- break;
-
- case BINOP_REM:
- 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. */
- /* 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.");
- }
- 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;
-
- case BINOP_RSH:
- v = v1 >> v2;
- break;
-
- case BINOP_BITWISE_AND:
- v = v1 & v2;
- break;
-
- case BINOP_BITWISE_IOR:
- v = v1 | v2;
- break;
-
- case BINOP_BITWISE_XOR:
- v = v1 ^ v2;
- break;
-
- case BINOP_LOGICAL_AND:
- v = v1 && v2;
- break;
-
- case BINOP_LOGICAL_OR:
- v = v1 || v2;
- break;
-
- case BINOP_MIN:
- v = v1 < v2 ? v1 : v2;
- break;
-
- case BINOP_MAX:
- v = v1 > v2 ? v1 : v2;
- break;
-
- case BINOP_EQUAL:
- v = v1 == v2;
- break;
-
- case BINOP_LESS:
- v = v1 < v2;
- break;
-
- default:
- error ("Invalid binary operation on numbers.");
- }
-
- /* 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). */
-
- /* Can't just call init_type because we wouldn't know what
- name to give the type. */
- val = allocate_value
- (result_len > TARGET_LONG_BIT / HOST_CHAR_BIT
- ? builtin_type_long_long
- : builtin_type_long);
- store_signed_integer (VALUE_CONTENTS_RAW (val),
- TYPE_LENGTH (VALUE_TYPE (val)),
- v);
- }
- }
-
- return val;
-}
-
-/* Simulate the C operator ! -- return 1 if ARG1 contains zero. */
-
-int
-value_logical_not (arg1)
- value_ptr arg1;
-{
- register int len;
- register char *p;
- struct type *type1;
-
- COERCE_NUMBER (arg1);
- type1 = check_typedef (VALUE_TYPE (arg1));
-
- if (TYPE_CODE (type1) == TYPE_CODE_FLT)
- return 0 == value_as_double (arg1);
-
- len = TYPE_LENGTH (type1);
- p = VALUE_CONTENTS (arg1);
-
- while (--len >= 0)
- {
- if (*p++)
- break;
- }
-
- return len < 0;
-}
-
-/* Simulate the C operator == by returning a 1
- iff ARG1 and ARG2 have equal contents. */
-
-int
-value_equal (arg1, arg2)
- register value_ptr arg1, arg2;
-
-{
- register int len;
- register char *p1, *p2;
- struct type *type1, *type2;
- enum type_code code1;
- enum type_code code2;
-
- COERCE_NUMBER (arg1);
- COERCE_NUMBER (arg2);
-
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
- code1 = TYPE_CODE (type1);
- code2 = TYPE_CODE (type2);
-
- if (code1 == TYPE_CODE_INT && code2 == TYPE_CODE_INT)
- return longest_to_int (value_as_long (value_binop (arg1, arg2,
- BINOP_EQUAL)));
- else if ((code1 == TYPE_CODE_FLT || code1 == TYPE_CODE_INT)
- && (code2 == TYPE_CODE_FLT || code2 == TYPE_CODE_INT))
- return value_as_double (arg1) == value_as_double (arg2);
-
- /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
- is bigger. */
- else if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_INT)
- return value_as_pointer (arg1) == (CORE_ADDR) value_as_long (arg2);
- else if (code2 == TYPE_CODE_PTR && code1 == TYPE_CODE_INT)
- return (CORE_ADDR) value_as_long (arg1) == value_as_pointer (arg2);
-
- else if (code1 == code2
- && ((len = (int) TYPE_LENGTH (type1))
- == (int) TYPE_LENGTH (type2)))
- {
- p1 = VALUE_CONTENTS (arg1);
- p2 = VALUE_CONTENTS (arg2);
- while (--len >= 0)
- {
- if (*p1++ != *p2++)
- break;
- }
- return len < 0;
- }
- else
- {
- error ("Invalid type combination in equality test.");
- return 0; /* For lint -- never reached */
- }
-}
-
-/* Simulate the C operator < by returning 1
- iff ARG1's contents are less than ARG2's. */
-
-int
-value_less (arg1, arg2)
- register value_ptr arg1, arg2;
-{
- register enum type_code code1;
- register enum type_code code2;
- struct type *type1, *type2;
-
- COERCE_NUMBER (arg1);
- COERCE_NUMBER (arg2);
-
- type1 = check_typedef (VALUE_TYPE (arg1));
- type2 = check_typedef (VALUE_TYPE (arg2));
- code1 = TYPE_CODE (type1);
- code2 = TYPE_CODE (type2);
-
- if (code1 == TYPE_CODE_INT && code2 == TYPE_CODE_INT)
- return longest_to_int (value_as_long (value_binop (arg1, arg2,
- BINOP_LESS)));
- else if ((code1 == TYPE_CODE_FLT || code1 == TYPE_CODE_INT)
- && (code2 == TYPE_CODE_FLT || code2 == TYPE_CODE_INT))
- return value_as_double (arg1) < value_as_double (arg2);
- else if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_PTR)
- return value_as_pointer (arg1) < value_as_pointer (arg2);
-
- /* FIXME: Need to promote to either CORE_ADDR or LONGEST, whichever
- is bigger. */
- else if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_INT)
- return value_as_pointer (arg1) < (CORE_ADDR) value_as_long (arg2);
- else if (code2 == TYPE_CODE_PTR && code1 == TYPE_CODE_INT)
- return (CORE_ADDR) value_as_long (arg1) < value_as_pointer (arg2);
-
- else
- {
- error ("Invalid type combination in ordering comparison.");
- return 0;
- }
-}
-
-/* The unary operators - and ~. Both free the argument ARG1. */
-
-value_ptr
-value_neg (arg1)
- register value_ptr arg1;
-{
- register struct type *type;
-
- COERCE_REF (arg1);
- COERCE_ENUM (arg1);
-
- type = check_typedef (VALUE_TYPE (arg1));
-
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- return value_from_double (type, - value_as_double (arg1));
- else if (TYPE_CODE (type) == TYPE_CODE_INT)
- return value_from_longest (type, - value_as_long (arg1));
- else {
- error ("Argument to negate operation not a number.");
- return 0; /* For lint -- never reached */
- }
-}
-
-value_ptr
-value_complement (arg1)
- register value_ptr arg1;
-{
- COERCE_REF (arg1);
- COERCE_ENUM (arg1);
-
- if (TYPE_CODE (check_typedef (VALUE_TYPE (arg1))) != TYPE_CODE_INT)
- error ("Argument to complement operation not an integer.");
-
- 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;
-{
- LONGEST low_bound, high_bound;
- LONGEST word;
- unsigned rel_index;
- struct type *range = TYPE_FIELD_TYPE (type, 0);
- if (get_discrete_bounds (range, &low_bound, &high_bound) < 0)
- return -2;
- if (index < low_bound || index > high_bound)
- return -1;
- rel_index = index - low_bound;
- word = unpack_long (builtin_type_unsigned_char,
- valaddr + (rel_index / TARGET_CHAR_BIT));
- rel_index %= TARGET_CHAR_BIT;
- if (BITS_BIG_ENDIAN)
- rel_index = TARGET_CHAR_BIT - 1 - rel_index;
- return (word >> rel_index) & 1;
-}
-
-value_ptr
-value_in (element, set)
- value_ptr element, set;
-{
- int member;
- struct type *settype = check_typedef (VALUE_TYPE (set));
- struct type *eltype = check_typedef (VALUE_TYPE (element));
- if (TYPE_CODE (eltype) == TYPE_CODE_RANGE)
- eltype = TYPE_TARGET_TYPE (eltype);
- if (TYPE_CODE (settype) != TYPE_CODE_SET)
- error ("Second argument of 'IN' has wrong type");
- if (TYPE_CODE (eltype) != TYPE_CODE_INT
- && TYPE_CODE (eltype) != TYPE_CODE_CHAR
- && TYPE_CODE (eltype) != TYPE_CODE_ENUM
- && TYPE_CODE (eltype) != TYPE_CODE_BOOL)
- error ("First argument of 'IN' has wrong type");
- member = value_bit_index (settype, VALUE_CONTENTS (set),
- value_as_long (element));
- if (member < 0)
- error ("First argument of 'IN' not in range");
- return value_from_longest (LA_BOOL_TYPE, member);
-}
-
-void
-_initialize_valarith ()
-{
-}