mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-26 22:31:05 +00:00
4cef9792f4
They take a pointer to a free-list used for hashlinks so the hashlink pools can be per-thread. However, hash tables that are not updated are always thread-safe, so this affects only updates. progs_t has been set up such that it is easy for multiple progs within one thread can share hashlinks.
695 lines
17 KiB
C
695 lines
17 KiB
C
/*
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value.c
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value handling
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Copyright (C) 2002 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2002/06/04
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include "QF/alloc.h"
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#include "QF/dstring.h"
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#include "QF/hash.h"
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#include "QF/mathlib.h"
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#include "QF/va.h"
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#include "qfcc.h"
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#include "def.h"
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#include "defspace.h"
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#include "diagnostic.h"
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#include "emit.h"
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#include "expr.h"
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#include "reloc.h"
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#include "strpool.h"
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#include "symtab.h"
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#include "type.h"
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#include "value.h"
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typedef struct {
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def_t *def;
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union {
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string_t string_val;
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float float_val;
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float vector_val[3];
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int entity_val;
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int field_val;
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int func_val;
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ex_pointer_t pointer;
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float quaternion_val[4];
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int integer_val;
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double double_val;
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} i;
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} immediate_t;
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static hashtab_t *value_table;
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static ex_value_t *values_freelist;
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static uintptr_t
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value_get_hash (const void *_val, void *unused)
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{
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const ex_value_t *val = (const ex_value_t *) _val;
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return Hash_Buffer (&val->v, sizeof (val->v)) ^ (uintptr_t) val->type;
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}
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static int
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value_compare (const void *_val1, const void *_val2, void *unused)
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{
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const ex_value_t *val1 = (const ex_value_t *) _val1;
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const ex_value_t *val2 = (const ex_value_t *) _val2;
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if (val1->type != val2->type)
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return 0;
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return memcmp (&val1->v, &val2->v, sizeof (val1->v)) == 0;
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}
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static ex_value_t *
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new_value (void)
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{
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ex_value_t *value;
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ALLOC (256, ex_value_t, values, value);
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return value;
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}
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static void
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set_val_type (ex_value_t *val, type_t *type)
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{
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val->type = type;
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val->lltype = low_level_type (type);
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}
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static ex_value_t *
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find_value (const ex_value_t *val)
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{
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ex_value_t *value;
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value = Hash_FindElement (value_table, val);
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if (value)
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return value;
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value = new_value ();
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*value = *val;
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Hash_AddElement (value_table, value);
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return value;
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}
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ex_value_t *
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new_string_val (const char *string_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_string);
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if (string_val)
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val.v.string_val = save_string (string_val);
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return find_value (&val);
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}
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ex_value_t *
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new_double_val (double double_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_double);
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val.v.double_val = double_val;
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return find_value (&val);
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}
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ex_value_t *
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new_float_val (float float_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_float);
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val.v.float_val = float_val;
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return find_value (&val);
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}
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ex_value_t *
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new_vector_val (const float *vector_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_vector);
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VectorCopy (vector_val, val.v.vector_val);
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return find_value (&val);
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}
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ex_value_t *
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new_entity_val (int entity_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_entity);
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val.v.entity_val = entity_val;
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return find_value (&val);
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}
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ex_value_t *
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new_field_val (int field_val, type_t *type, def_t *def)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, field_type (type));
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val.v.pointer.val = field_val;
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val.v.pointer.type = type;
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val.v.pointer.def = def;
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return find_value (&val);
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}
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ex_value_t *
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new_func_val (int func_val, type_t *type)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, type);
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val.v.func_val.val = func_val;
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val.v.func_val.type = type;
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return find_value (&val);
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}
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ex_value_t *
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new_pointer_val (int pointer_val, type_t *type, def_t *def,
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struct operand_s *tempop)
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{
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ex_value_t val;
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if (!type) {
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internal_error (0, "pointer value with no type");
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}
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memset (&val, 0, sizeof (val));
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set_val_type (&val, pointer_type (type));
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val.v.pointer.val = pointer_val;
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val.v.pointer.type = type;
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val.v.pointer.def = def;
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val.v.pointer.tempop = tempop;
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return find_value (&val);
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}
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ex_value_t *
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new_quaternion_val (const float *quaternion_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_quaternion);
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QuatCopy (quaternion_val, val.v.quaternion_val);
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return find_value (&val);
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}
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ex_value_t *
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new_integer_val (int integer_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_integer);
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val.v.integer_val = integer_val;
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return find_value (&val);
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}
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ex_value_t *
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new_uinteger_val (int uinteger_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_uinteger);
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val.v.uinteger_val = uinteger_val;
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return find_value (&val);
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}
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ex_value_t *
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new_short_val (short short_val)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, &type_short);
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val.v.short_val = short_val;
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return find_value (&val);
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}
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ex_value_t *
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new_nil_val (type_t *type)
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{
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ex_value_t val;
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memset (&val, 0, sizeof (val));
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set_val_type (&val, type);
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if (val.lltype == ev_void) {
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val.lltype = type_nil->type;
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}
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if (val.lltype == ev_pointer || val.lltype == ev_field )
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val.v.pointer.type = type->t.fldptr.type;
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if (val.lltype == ev_func)
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val.v.func_val.type = type;
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return find_value (&val);
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}
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static hashtab_t *string_imm_defs;
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static hashtab_t *float_imm_defs;
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static hashtab_t *vector_imm_defs;
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static hashtab_t *entity_imm_defs;
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static hashtab_t *field_imm_defs;
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static hashtab_t *func_imm_defs;
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static hashtab_t *pointer_imm_defs;
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static hashtab_t *quaternion_imm_defs;
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static hashtab_t *integer_imm_defs;
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static hashtab_t *double_imm_defs;
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static void
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imm_free (void *_imm, void *unused)
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{
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free (_imm);
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}
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static __attribute__((pure)) uintptr_t
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imm_get_hash (const void *_imm, void *_tab)
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{
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immediate_t *imm = (immediate_t *) _imm;
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hashtab_t **tab = (hashtab_t **) _tab;
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if (tab == &string_imm_defs) {
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const char *str = pr.strings->strings + imm->i.string_val;
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return str ? Hash_String (str) : 0;
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} else if (tab == &float_imm_defs) {
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return imm->i.integer_val;
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} else if (tab == &vector_imm_defs) {
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return Hash_Buffer (&imm->i.vector_val, sizeof (&imm->i.vector_val));
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} else if (tab == &entity_imm_defs) {
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return imm->i.integer_val;
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} else if (tab == &field_imm_defs) {
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return Hash_Buffer (&imm->i.pointer, sizeof (&imm->i.pointer));
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} else if (tab == &func_imm_defs) {
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return imm->i.integer_val;
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} else if (tab == &pointer_imm_defs) {
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return Hash_Buffer (&imm->i.pointer, sizeof (&imm->i.pointer));
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} else if (tab == &quaternion_imm_defs) {
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return Hash_Buffer (&imm->i.quaternion_val,
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sizeof (&imm->i.quaternion_val));
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} else if (tab == &double_imm_defs) {
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return Hash_Buffer (&imm->i.double_val, sizeof (&imm->i.double_val));
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} else if (tab == &integer_imm_defs) {
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return imm->i.integer_val;
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} else {
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internal_error (0, 0);
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}
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}
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static __attribute__((pure)) int
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imm_compare (const void *_imm1, const void *_imm2, void *_tab)
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{
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immediate_t *imm1 = (immediate_t *) _imm1;
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immediate_t *imm2 = (immediate_t *) _imm2;
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hashtab_t **tab = (hashtab_t **) _tab;
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if (tab == &string_imm_defs) {
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const char *str1 = pr.strings->strings + imm1->i.string_val;
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const char *str2 = pr.strings->strings + imm2->i.string_val;
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return (str1 == str2 || (str1 && str2 && !strcmp (str1, str2)));
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} else if (tab == &float_imm_defs) {
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return imm1->i.float_val == imm2->i.float_val;
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} else if (tab == &vector_imm_defs) {
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return VectorCompare (imm1->i.vector_val, imm2->i.vector_val);
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} else if (tab == &entity_imm_defs) {
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return imm1->i.entity_val == imm2->i.entity_val;
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} else if (tab == &field_imm_defs) {
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return !memcmp (&imm1->i.pointer, &imm2->i.pointer,
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sizeof (imm1->i.pointer));
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} else if (tab == &func_imm_defs) {
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return imm1->i.func_val == imm2->i.func_val;
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} else if (tab == &pointer_imm_defs) {
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return !memcmp (&imm1->i.pointer, &imm2->i.pointer,
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sizeof (imm1->i.pointer));
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} else if (tab == &quaternion_imm_defs) {
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return QuatCompare (imm1->i.quaternion_val, imm2->i.quaternion_val);
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} else if (tab == &double_imm_defs) {
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return imm1->i.double_val == imm2->i.double_val;
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} else if (tab == &integer_imm_defs) {
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return imm1->i.integer_val == imm2->i.integer_val;
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} else {
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internal_error (0, 0);
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}
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}
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int
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ReuseString (const char *str)
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{
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return strpool_addstr (pr.strings, str);
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}
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static float
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value_as_float (ex_value_t *value)
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{
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if (value->lltype == ev_uinteger)
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return value->v.uinteger_val;
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if (value->lltype == ev_integer)
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return value->v.integer_val;
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if (value->lltype == ev_short)
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return value->v.short_val;
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if (value->lltype == ev_double)
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return value->v.double_val;
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if (value->lltype == ev_float)
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return value->v.float_val;
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return 0;
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}
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static double
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value_as_double (ex_value_t *value)
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{
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if (value->lltype == ev_uinteger)
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return value->v.uinteger_val;
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if (value->lltype == ev_integer)
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return value->v.integer_val;
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if (value->lltype == ev_short)
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return value->v.short_val;
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if (value->lltype == ev_double)
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return value->v.double_val;
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if (value->lltype == ev_float)
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return value->v.float_val;
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return 0;
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}
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static int
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value_as_int (ex_value_t *value)
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{
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if (value->lltype == ev_uinteger)
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return value->v.uinteger_val;
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if (value->lltype == ev_integer)
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return value->v.integer_val;
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if (value->lltype == ev_short)
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return value->v.short_val;
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if (value->lltype == ev_double)
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return value->v.double_val;
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if (value->lltype == ev_float)
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return value->v.float_val;
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return 0;
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}
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static unsigned
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value_as_uint (ex_value_t *value)
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{
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if (value->lltype == ev_uinteger)
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return value->v.uinteger_val;
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if (value->lltype == ev_integer)
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return value->v.integer_val;
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if (value->lltype == ev_short)
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return value->v.short_val;
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if (value->lltype == ev_double)
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return value->v.double_val;
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if (value->lltype == ev_float)
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return value->v.float_val;
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return 0;
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}
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ex_value_t *
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convert_value (ex_value_t *value, type_t *type)
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{
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if (!is_scalar (type) || !is_scalar (ev_types[value->lltype])) {
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error (0, "unable to convert non-scalar value");
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return value;
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}
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if (is_float (type)) {
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float val = value_as_float (value);
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return new_float_val (val);
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} else if (is_double (type)) {
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double val = value_as_double (value);
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return new_double_val (val);
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} else if (type->type == ev_short) {
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int val = value_as_int (value);
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return new_short_val (val);
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} else if (type->type == ev_uinteger) {
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unsigned val = value_as_uint (value);
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return new_uinteger_val (val);
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} else {
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//FIXME handle enums separately?
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int val = value_as_int (value);
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return new_integer_val (val);
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}
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}
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ex_value_t *
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alias_value (ex_value_t *value, type_t *type)
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{
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ex_value_t new;
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if (type_size (type) != type_size (ev_types[value->lltype])) {
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error (0, "unable to alias different sized values");
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return value;
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}
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new = *value;
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set_val_type (&new, type);
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return find_value (&new);
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}
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static immediate_t *
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make_def_imm (def_t *def, hashtab_t *tab, ex_value_t *val)
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{
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immediate_t *imm;
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imm = calloc (1, sizeof (immediate_t));
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imm->def = def;
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memcpy (&imm->i, &val->v, sizeof (imm->i));
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Hash_AddElement (tab, imm);
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return imm;
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}
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def_t *
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emit_value (ex_value_t *value, def_t *def)
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{
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def_t *cn;
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hashtab_t *tab = 0;
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type_t *type;
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ex_value_t val = *value;
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immediate_t *imm, search;
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if (!string_imm_defs) {
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clear_immediates ();
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}
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cn = 0;
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// if (val.type == ev_void)
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// val.type = type_nil->type;
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switch (val.lltype) {
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case ev_entity:
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tab = entity_imm_defs;
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type = &type_entity;
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break;
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case ev_field:
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tab = field_imm_defs;
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type = &type_field;
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break;
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case ev_func:
|
|
tab = func_imm_defs;
|
|
type = &type_function;
|
|
break;
|
|
case ev_pointer:
|
|
tab = pointer_imm_defs;
|
|
type = &type_pointer;
|
|
break;
|
|
case ev_integer:
|
|
case ev_uinteger:
|
|
if (!def || def->type != &type_float) {
|
|
tab = integer_imm_defs;
|
|
type = &type_integer;
|
|
break;
|
|
}
|
|
val.v.float_val = val.v.integer_val;
|
|
val.lltype = ev_float;
|
|
case ev_float:
|
|
tab = float_imm_defs;
|
|
type = &type_float;
|
|
break;
|
|
case ev_string:
|
|
val.v.integer_val = ReuseString (val.v.string_val);
|
|
tab = string_imm_defs;
|
|
type = &type_string;
|
|
break;
|
|
case ev_vector:
|
|
tab = vector_imm_defs;
|
|
type = &type_vector;
|
|
break;
|
|
case ev_quat:
|
|
tab = quaternion_imm_defs;
|
|
type = &type_quaternion;
|
|
break;
|
|
case ev_double:
|
|
tab = double_imm_defs;
|
|
type = &type_double;
|
|
break;
|
|
default:
|
|
internal_error (0, 0);
|
|
}
|
|
memcpy (&search.i, &val.v, sizeof (search.i));
|
|
imm = (immediate_t *) Hash_FindElement (tab, &search);
|
|
if (imm && strcmp (imm->def->name, ".zero") == 0) {
|
|
if (def) {
|
|
imm = 0; //FIXME do full def aliasing
|
|
} else {
|
|
symbol_t *sym;
|
|
sym = make_symbol (".zero", &type_zero, 0, sc_extern);
|
|
return sym->s.def;
|
|
}
|
|
}
|
|
if (imm) {
|
|
cn = imm->def;
|
|
if (def) {
|
|
defspace_free_loc (def->space, def->offset, type_size (def->type));
|
|
def->offset = cn->offset;
|
|
def->initialized = def->constant = 1;
|
|
def->nosave = 1;
|
|
def->local = 0;
|
|
cn = def;
|
|
} else {
|
|
if (cn->type != type) {
|
|
def = new_def (".imm", type, pr.near_data, sc_static);
|
|
def->offset = cn->offset;
|
|
cn = def;
|
|
}
|
|
}
|
|
return cn;
|
|
}
|
|
// allocate a new one
|
|
// always share immediates
|
|
if (def) {
|
|
if (def->type != type) {
|
|
cn = new_def (".imm", type, pr.near_data, sc_static);
|
|
cn->offset = def->offset;
|
|
} else {
|
|
cn = def;
|
|
}
|
|
} else {
|
|
cn = new_def (".imm", type, pr.near_data, sc_static);
|
|
}
|
|
cn->initialized = cn->constant = 1;
|
|
cn->nosave = 1;
|
|
// copy the immediate to the global area
|
|
switch (val.lltype) {
|
|
case ev_string:
|
|
reloc_def_string (cn);
|
|
break;
|
|
case ev_func:
|
|
if (val.v.func_val.val) {
|
|
reloc_t *reloc;
|
|
reloc = new_reloc (cn->space, cn->offset, rel_def_func);
|
|
reloc->next = pr.relocs;
|
|
pr.relocs = reloc;
|
|
}
|
|
break;
|
|
case ev_field:
|
|
if (val.v.pointer.def)
|
|
reloc_def_field_ofs (val.v.pointer.def, cn);
|
|
break;
|
|
case ev_pointer:
|
|
if (val.v.pointer.def) {
|
|
EMIT_DEF_OFS (pr.near_data, D_INT (cn),
|
|
val.v.pointer.def);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
memcpy (D_POINTER (void, cn), &val.v, 4 * type_size (type));
|
|
|
|
make_def_imm (cn, tab, &val);
|
|
|
|
return cn;
|
|
}
|
|
|
|
void
|
|
clear_immediates (void)
|
|
{
|
|
def_t *def;
|
|
ex_value_t zero_val;
|
|
|
|
if (value_table) {
|
|
Hash_FlushTable (value_table);
|
|
Hash_FlushTable (string_imm_defs);
|
|
Hash_FlushTable (float_imm_defs);
|
|
Hash_FlushTable (vector_imm_defs);
|
|
Hash_FlushTable (entity_imm_defs);
|
|
Hash_FlushTable (field_imm_defs);
|
|
Hash_FlushTable (func_imm_defs);
|
|
Hash_FlushTable (pointer_imm_defs);
|
|
Hash_FlushTable (quaternion_imm_defs);
|
|
Hash_FlushTable (integer_imm_defs);
|
|
Hash_FlushTable (double_imm_defs);
|
|
} else {
|
|
value_table = Hash_NewTable (16381, 0, 0, 0, 0);
|
|
Hash_SetHashCompare (value_table, value_get_hash, value_compare);
|
|
|
|
string_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&string_imm_defs, 0);
|
|
Hash_SetHashCompare (string_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
float_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&float_imm_defs, 0);
|
|
Hash_SetHashCompare (float_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
vector_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&vector_imm_defs, 0);
|
|
Hash_SetHashCompare (vector_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
entity_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&entity_imm_defs, 0);
|
|
Hash_SetHashCompare (entity_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
field_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&field_imm_defs, 0);
|
|
Hash_SetHashCompare (field_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
func_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&func_imm_defs, 0);
|
|
Hash_SetHashCompare (func_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
pointer_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&pointer_imm_defs, 0);
|
|
Hash_SetHashCompare (pointer_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
quaternion_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&quaternion_imm_defs, 0);
|
|
Hash_SetHashCompare (quaternion_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
integer_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&integer_imm_defs, 0);
|
|
Hash_SetHashCompare (integer_imm_defs, imm_get_hash, imm_compare);
|
|
|
|
double_imm_defs = Hash_NewTable (16381, 0, imm_free,
|
|
&double_imm_defs, 0);
|
|
Hash_SetHashCompare (double_imm_defs, imm_get_hash, imm_compare);
|
|
}
|
|
|
|
def = make_symbol (".zero", &type_zero, 0, sc_extern)->s.def;
|
|
|
|
memset (&zero_val, 0, sizeof (zero_val));
|
|
make_def_imm (def, string_imm_defs, &zero_val);
|
|
make_def_imm (def, float_imm_defs, &zero_val);
|
|
make_def_imm (def, entity_imm_defs, &zero_val);
|
|
make_def_imm (def, pointer_imm_defs, &zero_val);
|
|
make_def_imm (def, integer_imm_defs, &zero_val);
|
|
}
|