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quakeforge/libs/gamecode/engine/pr_load.c
Bill Currie ec47e08e1c go back to using QFile, quakeio.h and quakefs.h
2002-08-27 07:16:28 +00:00

318 lines
8.7 KiB
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/*
pr_edict.c
entity dictionary
Copyright (C) 1996-1997 Id Software, Inc.
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include "QF/cmd.h"
#include "QF/crc.h"
#include "QF/cvar.h"
#include "QF/hash.h"
#include "QF/progs.h"
#include "QF/qdefs.h"
#include "QF/qendian.h"
#include "QF/quakefs.h"
#include "QF/sys.h"
#include "QF/zone.h"
#include "QF/va.h"
#include "compat.h"
static const char *
function_get_key (void *f, void *_pr)
{
progs_t *pr = (progs_t*)_pr;
dfunction_t *func = (dfunction_t*)f;
return PR_GetString (pr, func->s_name);
}
static const char *
var_get_key (void *d, void *_pr)
{
progs_t *pr = (progs_t*)_pr;
ddef_t *def = (ddef_t*)d;
return PR_GetString (pr, def->s_name);
}
static void *
load_file (progs_t *pr, const char *path)
{
return COM_LoadHunkFile (path);
}
static void *
allocate_progs_mem (progs_t *pr, int size)
{
return Hunk_AllocName (size, pr->progs_name);
}
static void
free_progs_mem (progs_t *pr, void *mem)
{
}
void
PR_LoadProgsFile (progs_t * pr, QFile *file, int size, int edicts, int zone)
{
int i;
dprograms_t progs;
pr->progs = 0;
if (Qread (file, &progs, sizeof (progs)) != sizeof (progs))
return;
pr->progs_size = com_filesize;
Sys_DPrintf ("Programs occupy %iK.\n", com_filesize / 1024);
// store prog crc
pr->crc = CRC_Block ((byte*)&progs, sizeof (progs));
// byte swap the header
for (i = 0; i < sizeof (progs) / 4; i++)
((int *) &progs)[i] = LittleLong (((int *) &progs)[i]);
if (progs.version != PROG_VERSION
&& progs.version != PROG_ID_VERSION) {
if (progs.version < 0x00fff000) {
PR_Error (pr, "%s has unrecognised version number (%d)",
pr->progs_name, progs.version);
} else {
PR_Error (pr,
"%s has unrecognised version number (%02x.%03x.%03x)"
" [%02x.%03x.%03x expected]",
pr->progs_name,
progs.version >> 24,
(progs.version >> 12) & 0xfff,
progs.version & 0xfff,
PROG_VERSION >> 24,
(PROG_VERSION >> 12) & 0xfff,
PROG_VERSION & 0xfff);
}
}
// size of progs themselves
pr->progs_size = size;
// round off to next highest whole word address (esp for Alpha)
// this ensures that pointers in the engine data area are always
// properly aligned
pr->progs_size += sizeof (void*) - 1;
pr->progs_size &= ~(sizeof (void*) - 1);
// size of heap asked for by vm-subsystem
pr->zone_size = zone;
// round off to next highest whole word address (esp for Alpha)
// this ensures that pointers in the engine data area are always
// properly aligned
pr->zone_size += sizeof (void*) - 1;
pr->zone_size &= ~(sizeof (void*) - 1);
// size of edict ascked for by progs
pr->pr_edict_size = progs.entityfields * 4;
// size of engine data
pr->pr_edict_size += sizeof (edict_t) - sizeof (pr_type_t);
// round off to next highest whole word address (esp for Alpha)
// this ensures that pointers in the engine data area are always
// properly aligned
pr->pr_edict_size += sizeof (void*) - 1;
pr->pr_edict_size &= ~(sizeof (void*) - 1);
pr->pr_edictareasize = edicts * pr->pr_edict_size;
if (!pr->load_file)
pr->load_file = load_file;
if (!pr->allocate_progs_mem)
pr->allocate_progs_mem = allocate_progs_mem;
if (!pr->free_progs_mem)
pr->free_progs_mem = free_progs_mem;
PR_Resources_Clear (pr);
if (pr->progs)
pr->free_progs_mem (pr, pr->progs);
pr->progs = pr->allocate_progs_mem (pr, pr->progs_size + pr->zone_size
+ pr->pr_edictareasize);
if (!pr->progs)
return;
memcpy (pr->progs, &progs, sizeof (progs));
Qread (file, pr->progs + 1, size - sizeof (progs));
CRC_ProcessBlock ((byte *)(pr->progs + 1), & pr->crc,
size - sizeof (progs));
if (pr->edicts)
*pr->edicts = (edict_t *)((byte *) pr->progs + pr->progs_size);
pr->zone = (memzone_t *)((byte *) pr->progs + pr->progs_size
+ pr->pr_edictareasize);
if (pr->zone_size)
PR_Zone_Init (pr);
pr->pr_functions =
(dfunction_t *) ((byte *) pr->progs + pr->progs->ofs_functions);
pr->pr_strings = (char *) pr->progs + pr->progs->ofs_strings;
pr->pr_stringsize = pr->progs->numstrings;
pr->pr_globaldefs =
(ddef_t *) ((byte *) pr->progs + pr->progs->ofs_globaldefs);
pr->pr_fielddefs =
(ddef_t *) ((byte *) pr->progs + pr->progs->ofs_fielddefs);
pr->pr_statements =
(dstatement_t *) ((byte *) pr->progs + pr->progs->ofs_statements);
pr->pr_globals =
(pr_type_t *) ((byte *) pr->progs + pr->progs->ofs_globals);
pr->globals_size = (pr_type_t*)((byte *) pr->zone + pr->zone_size)
- pr->pr_globals;
if (pr->function_hash) {
Hash_FlushTable (pr->function_hash);
} else {
pr->function_hash = Hash_NewTable (1021, function_get_key, 0, pr);
}
if (pr->global_hash) {
Hash_FlushTable (pr->global_hash);
} else {
pr->global_hash = Hash_NewTable (1021, var_get_key, 0, pr);
}
if (pr->field_hash) {
Hash_FlushTable (pr->field_hash);
} else {
pr->field_hash = Hash_NewTable (1021, var_get_key, 0, pr);
}
// byte swap the lumps
for (i = 0; i < pr->progs->numstatements; i++) {
pr->pr_statements[i].op = LittleShort (pr->pr_statements[i].op);
pr->pr_statements[i].a = LittleShort (pr->pr_statements[i].a);
pr->pr_statements[i].b = LittleShort (pr->pr_statements[i].b);
pr->pr_statements[i].c = LittleShort (pr->pr_statements[i].c);
}
for (i = 0; i < pr->progs->numfunctions; i++) {
pr->pr_functions[i].first_statement =
LittleLong (pr->pr_functions[i].first_statement);
pr->pr_functions[i].parm_start =
LittleLong (pr->pr_functions[i].parm_start);
pr->pr_functions[i].s_name = LittleLong (pr->pr_functions[i].s_name);
pr->pr_functions[i].s_file = LittleLong (pr->pr_functions[i].s_file);
pr->pr_functions[i].numparms =
LittleLong (pr->pr_functions[i].numparms);
pr->pr_functions[i].locals = LittleLong (pr->pr_functions[i].locals);
Hash_Add (pr->function_hash, &pr->pr_functions[i]);
}
for (i = 0; i < pr->progs->numglobaldefs; i++) {
pr->pr_globaldefs[i].type = LittleShort (pr->pr_globaldefs[i].type);
pr->pr_globaldefs[i].ofs = LittleShort (pr->pr_globaldefs[i].ofs);
pr->pr_globaldefs[i].s_name = LittleLong (pr->pr_globaldefs[i].s_name);
Hash_Add (pr->global_hash, &pr->pr_globaldefs[i]);
}
for (i = 0; i < pr->progs->numfielddefs; i++) {
pr->pr_fielddefs[i].type = LittleShort (pr->pr_fielddefs[i].type);
if (pr->pr_fielddefs[i].type & DEF_SAVEGLOBAL)
PR_Error (pr, "PR_LoadProgs: pr_fielddefs[i].type & DEF_SAVEGLOBAL");
pr->pr_fielddefs[i].ofs = LittleShort (pr->pr_fielddefs[i].ofs);
pr->pr_fielddefs[i].s_name = LittleLong (pr->pr_fielddefs[i].s_name);
Hash_Add (pr->field_hash, &pr->pr_fielddefs[i]);
}
for (i = 0; i < pr->progs->numglobals; i++)
((int *) pr->pr_globals)[i] = LittleLong (((int *) pr->pr_globals)[i]);
}
/*
PR_LoadProgs
*/
void
PR_LoadProgs (progs_t *pr, const char *progsname, int edicts, int zone)
{
QFile *file;
COM_FOpenFile (progsname, &file);
pr->progs_name = progsname;
if (file) {
PR_LoadProgsFile (pr, file, com_filesize, edicts, zone);
Qclose (file);
}
if (!pr->progs)
return;
if (!PR_ResolveGlobals (pr))
PR_Error (pr, "unable to load %s", progsname);
// initialise the strings managment code
PR_LoadStrings (pr);
PR_LoadDebug (pr);
PR_Check_Opcodes (pr);
PR_InitRuntime (pr);
}
void
PR_Init_Cvars (void)
{
pr_boundscheck =
Cvar_Get ("pr_boundscheck", "0", CVAR_NONE, NULL,
"Server progs bounds checking");
pr_deadbeef_ents = Cvar_Get ("pr_deadbeef_ents", "0", CVAR_NONE, NULL,
"set to clear unallocated memory to 0xdeadbeef");
pr_deadbeef_locals = Cvar_Get ("pr_deadbeef_locals", "0", CVAR_NONE, NULL,
"set to clear uninitialized local vars to "
"0xdeadbeef");
PR_Debug_Init_Cvars ();
}
void
PR_Init (void)
{
PR_Opcode_Init ();
PR_Debug_Init ();
}
void
PR_Error (progs_t *pr, const char *error, ...)
{
va_list argptr;
char string[1024];
va_start (argptr, error);
vsnprintf (string, sizeof (string), error, argptr);
va_end (argptr);
Sys_Error ("%s: %s", pr->progs_name, string);
}
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