mirror of
https://git.code.sf.net/p/quake/quakeforge
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6d5ffa9f8e
There's still some cleanup to do, but everything seems to be working nicely: `make -j` works, `make distcheck` passes. There is probably plenty of bitrot in the package directories (RPM, debian), though. The vc project files have been removed since those versions are way out of date and quakeforge is pretty much dependent on gcc now anyway. Most of the old Makefile.am files are now Makemodule.am. This should allow for new Makefile.am files that allow local building (to be added on an as-needed bases). The current remaining Makefile.am files are for standalone sub-projects.a The installable bins are currently built in the top-level build directory. This may change if the clutter gets to be too much. While this does make a noticeable difference in build times, the main reason for the switch was to take care of the growing dependency issues: now it's possible to build tools for code generation (eg, using qfcc and ruamoko programs for code-gen).
301 lines
7 KiB
C
301 lines
7 KiB
C
/*
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reloc.c
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relocation support
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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: 2002/06/07
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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 "tools/qfcc/include/codespace.h"
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#include "tools/qfcc/include/def.h"
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#include "tools/qfcc/include/defspace.h"
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#include "tools/qfcc/include/diagnostic.h"
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#include "tools/qfcc/include/emit.h"
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#include "tools/qfcc/include/expr.h"
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#include "tools/qfcc/include/function.h"
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#include "tools/qfcc/include/qfcc.h"
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#include "tools/qfcc/include/reloc.h"
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static reloc_t *refs_freelist;
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static const char *reloc_name[] = {
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"rel_none",
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"rel_op_a_def",
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"rel_op_b_def",
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"rel_op_c_def",
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"rel_op_a_op",
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"rel_op_b_op",
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"rel_op_c_op",
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"rel_def_op",
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"rel_def_def",
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"rel_def_func",
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"rel_def_string",
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"rel_def_field",
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"rel_op_a_def_ofs",
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"rel_op_b_def_ofs",
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"rel_op_c_def_ofs",
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"rel_def_def_ofs",
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"rel_def_field_ofs",
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};
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#define RELOC(r) (r)->space->data[(r)->offset].integer_var
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void
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relocate_refs (reloc_t *reloc, int offset)
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{
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int o;
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while (reloc) {
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debug (0, "reloc %s:%x %s %x",
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reloc->space ? (reloc->space == pr.near_data ? "near" : "far")
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: "code",
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reloc->offset, reloc_name[reloc->type], offset);
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switch (reloc->type) {
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case rel_none:
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break;
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case rel_op_a_def:
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if (offset > 65535)
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error (0, "def offset too large");
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else
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pr.code->code[reloc->offset].a = offset;
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break;
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case rel_op_b_def:
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if (offset > 65535)
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error (0, "def offset too large");
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else
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pr.code->code[reloc->offset].b = offset;
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break;
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case rel_op_c_def:
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if (offset > 65535)
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error (0, "def offset too large");
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else
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pr.code->code[reloc->offset].c = offset;
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break;
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case rel_op_a_op:
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o = offset - reloc->offset;
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if (o < -32768 || o > 32767)
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error (0, "relative offset too large");
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else
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pr.code->code[reloc->offset].a = o;
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break;
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case rel_op_b_op:
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o = offset - reloc->offset;
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if (o < -32768 || o > 32767)
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error (0, "relative offset too large");
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else
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pr.code->code[reloc->offset].b = o;
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break;
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case rel_op_c_op:
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o = offset - reloc->offset;
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if (o < -32768 || o > 32767)
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error (0, "relative offset too large");
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else
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pr.code->code[reloc->offset].c = o;
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break;
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case rel_def_op:
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if (offset > pr.code->size) {
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error (0, "invalid statement offset: %d >= %d, %d",
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offset, pr.code->size, reloc->offset);
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} else
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RELOC (reloc) = offset;
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break;
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case rel_def_def:
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case rel_def_func:
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RELOC (reloc) = offset;
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break;
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case rel_def_string:
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break;
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case rel_def_field:
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break;
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case rel_op_a_def_ofs:
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o = offset + pr.code->code[reloc->offset].a;
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if (o < 0 || o > 65535)
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error (0, "def offset out of range");
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else
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pr.code->code[reloc->offset].a = o;
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break;
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case rel_op_b_def_ofs:
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o = offset + pr.code->code[reloc->offset].b;
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if (o < 0 || o > 65535)
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error (0, "def offset out of range");
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else
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pr.code->code[reloc->offset].b = o;
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break;
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case rel_op_c_def_ofs:
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o = offset + pr.code->code[reloc->offset].c;
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if (o < 0 || o > 65535)
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error (0, "def offset out of range");
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else
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pr.code->code[reloc->offset].c = o;
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break;
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case rel_def_def_ofs:
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RELOC (reloc) += offset;
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break;
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case rel_def_field_ofs:
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//FIXME what is correct here?
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//RELOC (reloc) += pr.data->data[offset].integer_var;
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RELOC (reloc) += pr.near_data->data[offset].integer_var;
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break;
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}
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reloc = reloc->next;
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}
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}
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reloc_t *
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new_reloc (defspace_t *space, int offset, reloc_type type)
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{
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reloc_t *ref;
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ALLOC (16384, reloc_t, refs, ref);
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ref->space = space;
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ref->offset = offset;
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ref->type = type;
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ref->line = pr.source_line;
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ref->file = pr.source_file;
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ref->return_address = __builtin_return_address (0);
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return ref;
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}
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void
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reloc_op_def (def_t *def, int offset, int field)
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{
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reloc_t *ref = new_reloc (0, offset, rel_op_a_def + field);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_op_def_ofs (def_t *def, int offset, int field)
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{
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reloc_t *ref = new_reloc (0, offset, rel_op_a_def_ofs + field);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_def_def (def_t *def, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_def);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_def_def_ofs (def_t *def, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_def_ofs);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_def_func (function_t *func, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_func);
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ref->return_address = __builtin_return_address (0);
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ref->next = func->refs;
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func->refs = ref;
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}
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void
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reloc_def_string (const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_string);
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ref->return_address = __builtin_return_address (0);
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ref->next = pr.relocs;
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pr.relocs = ref;
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}
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void
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reloc_def_field (def_t *def, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_field);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_def_field_ofs (def_t *def, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_field_ofs);
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ref->return_address = __builtin_return_address (0);
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ref->next = def->relocs;
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def->relocs = ref;
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}
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void
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reloc_def_op (const ex_label_t *label, const def_t *location)
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{
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reloc_t *ref;
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ref = new_reloc (location->space, location->offset, rel_def_op);
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ref->return_address = __builtin_return_address (0);
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ref->next = pr.relocs;
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ref->label = label;
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pr.relocs = ref;
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}
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void
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reloc_attach_relocs (reloc_t *relocs, reloc_t **location)
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{
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reloc_t *r;
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if (!relocs)
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return;
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for (r = relocs; r->next; r = r->next)
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;
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r->next = *location;
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*location = relocs;
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}
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