mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-24 03:31:00 +00:00
162 lines
3.3 KiB
C
162 lines
3.3 KiB
C
/*
|
|
reloc.c
|
|
|
|
relocation support
|
|
|
|
Copyright (C) 2002 Bill Currie <bill@taniwha.org>
|
|
|
|
Author: Bill Currie <bill@taniwha.org>
|
|
Date: 2002/06/07
|
|
|
|
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
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
static __attribute__ ((unused)) const char rcsid[] =
|
|
"$Id$";
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
#include <stdlib.h>
|
|
|
|
#include "def.h"
|
|
#include "emit.h"
|
|
#include "expr.h"
|
|
#include "function.h"
|
|
#include "qfcc.h"
|
|
#include "reloc.h"
|
|
|
|
static reloc_t *free_refs;
|
|
|
|
void
|
|
relocate_refs (reloc_t *refs, int ofs)
|
|
{
|
|
int o;
|
|
|
|
while (refs) {
|
|
switch (refs->type) {
|
|
case rel_none:
|
|
break;
|
|
case rel_op_a_def:
|
|
if (ofs > 65535)
|
|
error (0, "def offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].a = ofs;
|
|
break;
|
|
case rel_op_b_def:
|
|
if (ofs > 65535)
|
|
error (0, "def offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].b = ofs;
|
|
break;
|
|
case rel_op_c_def:
|
|
if (ofs > 65535)
|
|
error (0, "def offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].c = ofs;
|
|
break;
|
|
case rel_op_a_op:
|
|
o = ofs - refs->ofs;
|
|
if (o < -32768 || o > 32767)
|
|
error (0, "relative offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].a = o;
|
|
break;
|
|
case rel_op_b_op:
|
|
o = ofs - refs->ofs;
|
|
if (o < -32768 || o > 32767)
|
|
error (0, "relative offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].b = o;
|
|
break;
|
|
case rel_op_c_op:
|
|
o = ofs - refs->ofs;
|
|
if (o < -32768 || o > 32767)
|
|
error (0, "relative offset too large");
|
|
else
|
|
pr.code->code[refs->ofs].c = o;
|
|
break;
|
|
case rel_def_op:
|
|
if (ofs >= pr.code->size)
|
|
error (0, "invalid statement offset");
|
|
else
|
|
G_INT (refs->ofs) = ofs;
|
|
break;
|
|
case rel_def_def:
|
|
case rel_def_func:
|
|
G_INT (refs->ofs) = ofs;
|
|
break;
|
|
case rel_def_string:
|
|
break;
|
|
case rel_def_field:
|
|
break;
|
|
}
|
|
refs = refs->next;
|
|
}
|
|
}
|
|
|
|
reloc_t *
|
|
new_reloc (int ofs, reloc_type type)
|
|
{
|
|
reloc_t *ref;
|
|
|
|
ALLOC (16384, reloc_t, refs, ref);
|
|
ref->ofs = ofs;
|
|
ref->type = type;
|
|
return ref;
|
|
}
|
|
|
|
void
|
|
reloc_def_def (def_t *def, int ofs)
|
|
{
|
|
reloc_t *ref = new_reloc (ofs, rel_def_def);
|
|
ref->next = def->refs;
|
|
def->refs = ref;
|
|
}
|
|
|
|
void
|
|
reloc_def_func (function_t *func, int ofs)
|
|
{
|
|
reloc_t *ref = new_reloc (ofs, rel_def_func);
|
|
ref->next = func->refs;
|
|
func->refs = ref;
|
|
}
|
|
|
|
void
|
|
reloc_def_string (int ofs)
|
|
{
|
|
reloc_t *ref = new_reloc (ofs, rel_def_string);
|
|
ref->next = pr.relocs;
|
|
pr.relocs = ref;
|
|
}
|
|
|
|
void
|
|
reloc_def_field (def_t *def, int ofs)
|
|
{
|
|
reloc_t *ref = new_reloc (ofs, rel_def_field);
|
|
ref->next = def->refs;
|
|
def->refs = ref;
|
|
}
|