250 lines
6.7 KiB
C
250 lines
6.7 KiB
C
/* Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(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. See the
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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 the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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static const char rcsid[] =
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"$Id$";
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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/dstring.h"
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#include "QF/hash.h"
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#include "QF/va.h"
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#include "qfcc.h"
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#include "expr.h"
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#include "type.h"
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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 const char *
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string_imm_get_key (void *_def, void *unused)
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{
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def_t *def = (def_t *) _def;
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return G_STRING (def->ofs);
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}
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static const char *
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float_imm_get_key (void *_def, void *unused)
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{
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def_t *def = (def_t *) _def;
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static char rep[20];
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return va ("\001float:%08X\001", G_INT (def->ofs));
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return rep;
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}
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static const char *
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vector_imm_get_key (void *_def, void *unused)
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{
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def_t *def = (def_t *) _def;
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static char rep[60];
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return va ("\001vector:%08X\001%08X\001%08X\001",
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G_INT (def->ofs), G_INT (def->ofs + 1), G_INT (def->ofs + 2));
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return rep;
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}
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static const char *
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quaternion_imm_get_key (void *_def, void *unused)
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{
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def_t *def = (def_t *) _def;
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static char rep[60];
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return va ("\001quaternion:%08X\001%08X\001%08X\001%08X\001",
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G_INT (def->ofs), G_INT (def->ofs + 1),
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G_INT (def->ofs + 2), G_INT (def->ofs + 3));
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return rep;
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}
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static const char *
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int_imm_get_key (void *_def, void *_str)
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{
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def_t *def = (def_t *) _def;
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static char rep[60];
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char *str = (char *) _str;
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return va ("\001%s:%08X\001", str, G_INT (def->ofs));
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return rep;
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}
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def_t *
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PR_ReuseConstant (expr_t *expr, def_t *def)
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{
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def_t *cn;
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static dstring_t*rep = 0;
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hashtab_t *tab = 0;
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type_t *type;
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expr_t e = *expr;
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if (!rep)
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rep = dstring_newstr ();
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if (!string_imm_defs) {
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string_imm_defs = Hash_NewTable (16381, string_imm_get_key, 0, 0);
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float_imm_defs = Hash_NewTable (16381, float_imm_get_key, 0, 0);
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vector_imm_defs = Hash_NewTable (16381, vector_imm_get_key, 0, 0);
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entity_imm_defs = Hash_NewTable (16381, int_imm_get_key, 0, "entity");
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field_imm_defs = Hash_NewTable (16381, int_imm_get_key, 0, "field");
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func_imm_defs = Hash_NewTable (16381, int_imm_get_key, 0, "func");
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pointer_imm_defs = Hash_NewTable (16381, int_imm_get_key, 0, "pointer");
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quaternion_imm_defs =
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Hash_NewTable (16381, quaternion_imm_get_key, 0, 0);
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integer_imm_defs = Hash_NewTable (16381, int_imm_get_key, 0, "integer");
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Hash_Add (string_imm_defs, cn = PR_NewDef (&type_string, ".imm", 0));
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cn->initialized = cn->constant = 1;
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Hash_Add (float_imm_defs, cn = PR_NewDef (&type_float, ".imm", 0));
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cn->initialized = cn->constant = 1;
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Hash_Add (entity_imm_defs, cn = PR_NewDef (&type_entity, ".imm", 0));
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cn->initialized = cn->constant = 1;
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Hash_Add (pointer_imm_defs, cn = PR_NewDef (&type_pointer, ".imm", 0));
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cn->initialized = cn->constant = 1;
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Hash_Add (integer_imm_defs, cn = PR_NewDef (&type_integer, ".imm", 0));
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cn->initialized = cn->constant = 1;
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}
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cn = 0;
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switch (e.type) {
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case ex_entity:
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dsprintf (rep, "\001entity:%08X\001", e.e.integer_val);
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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 ex_field:
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dsprintf (rep, "\001field:%08X\001", e.e.integer_val);
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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 ex_func:
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dsprintf (rep, "\001func:%08X\001", e.e.integer_val);
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tab = func_imm_defs;
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type = &type_function;
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break;
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case ex_pointer:
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dsprintf (rep, "\001pointer:%08X\001", e.e.pointer.val);
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tab = pointer_imm_defs;
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type = &type_pointer;
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break;
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case ex_integer:
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case ex_uinteger:
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if (!def || def->type != &type_float) {
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dsprintf (rep, "\001integer:%08X\001", e.e.integer_val);
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tab = integer_imm_defs;
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if (e.type == ex_uinteger)
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type = &type_uinteger;
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else
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type = &type_integer;
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break;
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}
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if (e.type == ex_uinteger)
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e.e.float_val = e.e.uinteger_val;
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else
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e.e.float_val = e.e.integer_val;
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case ex_float:
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dsprintf (rep, "\001float:%08X\001", e.e.integer_val);
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tab = float_imm_defs;
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type = &type_float;
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break;
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case ex_string:
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dsprintf (rep, "%s", e.e.string_val ? e.e.string_val : "");
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tab = string_imm_defs;
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type = &type_string;
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break;
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case ex_vector:
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dsprintf (rep, "\001vector:%08X\001%08X\001%08X\001",
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*(int *) &e.e.vector_val[0],
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*(int *) &e.e.vector_val[1], *(int *) &e.e.vector_val[2]);
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tab = vector_imm_defs;
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type = &type_vector;
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break;
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case ex_quaternion:
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dsprintf (rep, "\001quaternion:%08X\001%08X\001%08X\001%08X\001",
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*(int *) &e.e.quaternion_val[0],
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*(int *) &e.e.quaternion_val[1],
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*(int *) &e.e.quaternion_val[2],
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*(int *) &e.e.quaternion_val[3]);
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tab = vector_imm_defs;
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type = &type_quaternion;
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break;
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default:
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abort ();
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}
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cn = (def_t *) Hash_Find (tab, rep->str);
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if (cn) {
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if (def) {
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PR_FreeLocation (def);
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def->ofs = cn->ofs;
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def->initialized = def->constant = 1;
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cn = def;
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} else {
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if (cn->type != type) {
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def = PR_NewDef (type, ".imm", 0);
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def->ofs = cn->ofs;
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cn = def;
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}
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}
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return cn;
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}
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// allocate a new one
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// always share immediates
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if (def) {
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if (def->type != type) {
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cn = PR_NewDef (type, ".imm", 0);
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cn->ofs = def->ofs;
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} else {
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cn = def;
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}
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} else {
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cn = PR_NewDef (type, ".imm", 0);
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cn->ofs = PR_NewLocation (type);
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pr_global_defs[cn->ofs] = cn;
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if (type == &type_vector || type == &type_quaternion) {
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int i;
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for (i = 0; i < 3 + (type == &type_quaternion); i++)
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PR_NewDef (&type_float, ".imm", 0);
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}
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}
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cn->initialized = cn->constant = 1;
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// copy the immediate to the global area
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if (e.type == ex_string)
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e.e.integer_val = CopyString (rep->str);
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memcpy (pr_globals + cn->ofs, &e.e, 4 * pr_type_size[type->type]);
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Hash_Add (tab, cn);
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return cn;
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}
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