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/*
* Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of The TenDRA Project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
/**********************************************************************
$Author: pwe $
$Date: 1998/03/15 16:00:32 $
$Revision: 1.4 $
$Log: dw2_basic.c,v $
* Revision 1.4 1998/03/15 16:00:32 pwe
* regtrack dwarf dagnostics added
*
* Revision 1.3 1998/03/11 11:03:37 pwe
* DWARF optimisation info
*
* Revision 1.2 1998/01/21 10:30:04 pwe
* labdiff change
*
* Revision 1.1.1.1 1998/01/17 15:55:48 release
* First version to be checked into rolling release.
*
* Revision 1.11 1997/12/08 16:36:59 pwe
* abbrev key & directory names
*
* Revision 1.10 1997/12/04 19:41:10 pwe
* ANDF-DE V1.9
*
* Revision 1.9 1997/11/06 09:21:57 pwe
* ANDF-DE V1.8
*
* Revision 1.8 1997/10/23 09:27:23 pwe
* ANDF-DE v1.7, extra diags
*
* Revision 1.7 1997/10/10 18:18:19 pwe
* prep ANDF-DE revision
*
* Revision 1.6 1997/08/23 13:36:31 pwe
* initial ANDF-DE
*
* Revision 1.5 1997/05/13 08:02:25 pwe
* Signed LEB128 corrected
*
* Revision 1.4 1997/04/17 11:50:11 pwe
* Sparc and 80x86 support
*
* Revision 1.3 1997/04/01 17:19:33 pwe
* diagnose pl_tests and locate -> platform specific
*
* Revision 1.2 1997/03/24 11:10:17 pwe
* struct bitfields
*
* Revision 1.1 1997/03/20 16:08:59 pwe
* first version
*
**********************************************************************/
#include "config.h"
#include "common_types.h"
#include "dw2_config.h"
#include "dw2_basic.h"
#include "dw2_codes.h"
#include "dw2_iface.h"
#include "szs_als.h"
#include "expmacs.h"
#include "tags.h"
#include "basicread.h"
#include "dw2_abbrev_vn.h"
#define entry_names_wanted
#include "dw2_entries.h"
#undef entry_names_wanted
static char *sep = ", ";
void
uleb128(unsigned long value)
{
int byt;
for (;;) {
byt = value & 127;
value >>= 7;
if (value == 0) {
outn((long)byt);
return;
}
outn((long)byt | 128);
outs(sep);
}
}
int
uleb128_length(unsigned long value)
{
int op = 1;
for (;;) {
value >>= 7;
if (value == 0) {
return op;
}
op++;
}
}
void
sleb128(long value)
{
int negative = (value < 0);
int byt;
for (;;) {
byt = (unsigned long)value & 127;
value >>= 7;
if (negative) {
/* sign extend, since C doesn't imply arithmetic
* shift */
value |= - (1 << ((sizeof(value) * 8) - 7));
}
/* sign bit of byte is 2nd high order bit (0x40) */
if (value == - (long)((byt & 0x40) != 0)) {
outn((long)byt);
return;
}
outn((long)byt | 128);
outs(sep);
}
}
int
sleb128_length(long value)
{
int op = 1;
int negative = (value < 0);
int byt;
for (;;) {
byt = (unsigned long)value & 127;
value >>= 7;
if (negative) {
/* sign extend, since C doesn't imply arithmetic
* shift */
value |= - (1 << ((sizeof(value) * 8) - 7));
}
if (value == - (long)((byt & 0x40) != 0)) {
return op;
}
op++;
}
}
void
set_attribute(int nm, int form)
{
out8();
uleb128((unsigned long)nm);
if (form || !nm) {
outs(sep);
uleb128((unsigned long) form);
}
d_outnl();
return;
}
static long info_end;
static long pubnames_end;
static long aranges_end;
void
do_compunit_header(void)
{
info_end = next_dwarf_label();
pubnames_end = next_dwarf_label();
aranges_end = next_dwarf_label();
enter_section("debug_info");
out_dwf_label(dw_info_start, 1);
outnl_comment("Compilation Unit Header");
out32();
out_dwf_dist_to_label(info_end);
d_outnl();
out16();
outn((long)DWARF_MOD_VERSION);
d_outnl();
out32();
outs(abbrev_name);
d_outnl();
out8();
outn((long)PTR_SZ/8);
d_outnl();
exit_section();
enter_section("debug_pubnames");
out32();
out_dwf_dist_to_label(pubnames_end);
d_outnl();
out16();
outn((long)DWARF_MOD_VERSION);
d_outnl();
out32();
out_dwf_label(dw_info_start, 0);
d_outnl();
out32();
out_dwf_labdiff(dw_info_start, info_end);
d_outnl();
exit_section();
enter_section("debug_aranges");
out32();
out_dwf_dist_to_label(aranges_end);
d_outnl();
out16();
outn((long)DWARF_MOD_VERSION);
d_outnl();
out32();
out_dwf_label(dw_info_start, 0);
d_outnl();
out8();
outn((long)PTR_SZ/8);
d_outnl();
out8();
outn((long)0);
d_outnl();
dot_align(PTR_SZ/4);
exit_section();
return;
}
void
close_compunit_info(void)
{
enter_section("debug_info");
out_dwf_label(info_end, 1);
#ifdef NEEDS_DEBUG_ALIGN
dot_align(4);
#endif
exit_section();
enter_section("debug_pubnames");
out32();
outn((long)0);
d_outnl();
out_dwf_label(pubnames_end, 1);
#ifdef NEEDS_DEBUG_ALIGN
dot_align(4);
#endif
exit_section();
enter_section("debug_aranges");
out32();
outn((long)0);
d_outnl();
out32();
outn((long)0);
d_outnl();
out_dwf_label(aranges_end, 1);
exit_section();
}
void
dw_sibling_end(void)
{
out8();
uleb128((unsigned long)0);
outnl_comment("sibling end");
return;
}
void
dw_at_address(long lab)
{
out32();
out_dwf_label(lab, 0);
d_outnl();
return;
}
void
dw_at_ext_lab(ext_lab lab)
{
out32();
switch (lab.k) {
case LAB_STR:
outs(lab.u.s);
break;
case LAB_CODE:
out_code_label(lab.u.l);
break;
case LAB_D:
out_dwf_label(lab.u.l, 0);
break;
default:
failer("unset label");
}
d_outnl();
return;
}
void
dw_set_ext_lab(ext_lab lab)
{
switch (lab.k) {
case LAB_STR:
out_ext_label(lab.u.s);
break;
case LAB_D:
out_dwf_label(lab.u.l, 1);
break;
default:
failer("unexpected set label");
}
return;
}
void
dw_at_ext_address(dg_tag dt)
{
if (dt->outref.k == NO_LAB) {
dt->outref.k = LAB_D;
dt->outref.u.l = next_dwarf_label();
}
dw_at_ext_lab(dt->outref);
return;
}
void
set_ext_address(dg_tag dt)
{
if (dt->outref.k == NO_LAB) {
dt->outref.k = LAB_D;
dt->outref.u.l = next_dwarf_label();
}
dw_set_ext_lab(dt->outref);
return;
}
void
dw_at_abstract_lab(dg_tag dt)
{
if (!dt->abstract_lab) {
dt->abstract_lab = next_dwarf_label();
}
out32();
out_dwf_label(dt->abstract_lab, 0);
d_outnl();
return;
}
void
set_abstract_lab(dg_tag dt)
{
if (!dt->abstract_lab) {
dt->abstract_lab = next_dwarf_label();
}
out_dwf_label(dt->abstract_lab, 1);
return;
}
void
dw_at_string(char* s)
{
if (!s) {
s = "";
}
out_string(s);
return;
}
void
dw_at_form(int f)
{
out8();
uleb128((unsigned long)f);
return;
}
void
dw_at_data(int n, long d)
{
switch (n) {
case 1: {
out8();
break;
}
case 2: {
out16();
break;
}
case 4: {
out32();
break;
}
default:
failer("dwarf data size not supported");
}
outn(d);
d_outnl();
return;
}
void
dw_at_udata(unsigned long n)
{
out8();
uleb128(n);
d_outnl();
return;
}
void
dw_at_sdata(long n)
{
out8();
sleb128(n);
d_outnl();
return;
}
void
dw_at_flag(int x)
{
out8();
outn((long)x);
d_outnl();
return;
}
void
dw_at_decl(short_sourcepos p)
{
out8();
uleb128((unsigned long)(p.file ? p.file->index : 0));
outs(sep);
uleb128((unsigned long)p.line);
outs(sep);
uleb128((unsigned long)p.column);
d_outnl();
return;
}
void
dw_no_locate(void)
{
out8();
outn((long)0);
outnl_comment("discarded variable");
return;
}
void
dw_locate_offset(int n)
{
out8();
outn((long)(1 + uleb128_length((unsigned long)n)));
outs(sep);
outn((long)DW_OP_plus_uconst);
outs(sep);
uleb128((unsigned long)n);
d_outnl();
return;
}
static char *bad_refloc = "unimplemented relative location";
static int
refloc_length(exp e, exp id)
{
switch (name(e)) {
case name_tag:
if (son(e) != id) {
failer(bad_refloc);
}
if (no(e) == 0) {
return(0);
}
return(1 + uleb128_length((unsigned long)no(e) / 8));
case cont_tag:
return(refloc_length(son(e), id) + 1);
case reff_tag:
if (no(e) <0) {
failer(bad_refloc);
}
return(refloc_length(son(e), id) + 1 +
uleb128_length((unsigned long)no(e) / 8));
default:
failer(bad_refloc);
return(0);
}
}
static void
out_refloc(exp e, exp id)
{
switch (name(e)) {
case name_tag:
if (son(e) != id) {
failer(bad_refloc);
}
outs(sep);
outn((long)DW_OP_plus_uconst);
outs(sep);
uleb128((unsigned long)no(e) /8);
return;
case cont_tag:
out_refloc(son(e), id);
outs(sep);
outn((long)DW_OP_deref);
return;
case reff_tag:
if (no(e) <0) {
failer(bad_refloc);
}
out_refloc(son(e), id);
outs(sep);
outn((long)DW_OP_plus_uconst);
outs(sep);
uleb128((unsigned long)no(e) /8);
return;
default:
failer(bad_refloc);
}
}
void
dw_locate_reloffset(exp e)
{
int length;
if (name(e) != ident_tag) {
failer(bad_refloc);
return;
}
length = refloc_length(bro(son(e)), e);
out8();
if (length == 0) {
outn((long)1);
outs(sep);
outn((long)DW_OP_nop);
} else {
outn((long)length);
out_refloc(bro(son(e)), e);
}
d_outnl();
return;
}
void
dw_at_distance(long lo, long hi)
{
out16();
out_dwf_labdiff(lo, hi);
d_outnl();
return;
}
long last_text_label = 0;
long
set_dw_text_label(void)
{
if (any_output) {
last_text_label = next_dwarf_label();
out_dwf_label(last_text_label, 1);
reset_any_output;
}
return last_text_label;
}
void
out_text_label(long n)
{
out_dwf_label(n, 1);
last_text_label = n;
return;
}
void
out_loc_range(long start, long end, int inclusive)
{
/* for location list */
out32();
out_dwf_labdiff(dw_text_start, start);
d_outnl();
out32();
out_dwf_labdiff(dw_text_start, end);
if (inclusive) {
outs(" + ");
outn((long)min_instr_size);
}
d_outnl();
return;
}