freebsd-skq/contrib/elftoolchain/libdwarf/dwarf_lineno.c
emaste 46be049bf4 Update elftoolchain to upstream rev 3130
This brings a number of fixes to elfcopy/strip and DWARF4 improvements.

Sponsored by:	The FreeBSD Foundation
2014-12-24 03:13:16 +00:00

295 lines
6.7 KiB
C

/*-
* Copyright (c) 2009,2011 Kai Wang
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include "_libdwarf.h"
ELFTC_VCSID("$Id: dwarf_lineno.c 2983 2014-02-09 00:24:31Z kaiwang27 $");
int
dwarf_srclines(Dwarf_Die die, Dwarf_Line **linebuf, Dwarf_Signed *linecount,
Dwarf_Error *error)
{
Dwarf_LineInfo li;
Dwarf_Debug dbg;
Dwarf_Line ln;
Dwarf_CU cu;
Dwarf_Attribute at;
int i;
dbg = die != NULL ? die->die_dbg : NULL;
if (die == NULL || linebuf == NULL || linecount == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
if ((at = _dwarf_attr_find(die, DW_AT_stmt_list)) == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
cu = die->die_cu;
if (cu->cu_lineinfo == NULL) {
if (_dwarf_lineno_init(die, at->u[0].u64, error) !=
DW_DLE_NONE)
return (DW_DLV_ERROR);
}
if (cu->cu_lineinfo == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
li = cu->cu_lineinfo;
*linecount = (Dwarf_Signed) li->li_lnlen;
if (*linecount == 0) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
if (li->li_lnarray != NULL) {
*linebuf = li->li_lnarray;
return (DW_DLV_OK);
}
if ((li->li_lnarray = malloc(*linecount * sizeof(Dwarf_Line))) ==
NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
return (DW_DLV_ERROR);
}
for (i = 0, ln = STAILQ_FIRST(&li->li_lnlist);
i < *linecount && ln != NULL; i++, ln = STAILQ_NEXT(ln, ln_next))
li->li_lnarray[i] = ln;
*linebuf = li->li_lnarray;
return (DW_DLV_OK);
}
int
dwarf_srcfiles(Dwarf_Die die, char ***srcfiles, Dwarf_Signed *srccount,
Dwarf_Error *error)
{
Dwarf_LineInfo li;
Dwarf_LineFile lf;
Dwarf_Debug dbg;
Dwarf_CU cu;
Dwarf_Attribute at;
int i;
dbg = die != NULL ? die->die_dbg : NULL;
if (die == NULL || srcfiles == NULL || srccount == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
if ((at = _dwarf_attr_find(die, DW_AT_stmt_list)) == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
cu = die->die_cu;
if (cu->cu_lineinfo == NULL) {
if (_dwarf_lineno_init(die, at->u[0].u64, error) !=
DW_DLE_NONE)
return (DW_DLV_ERROR);
}
if (cu->cu_lineinfo == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
li = cu->cu_lineinfo;
*srccount = (Dwarf_Signed) li->li_lflen;
if (*srccount == 0) {
DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
return (DW_DLV_NO_ENTRY);
}
if (li->li_lfnarray != NULL) {
*srcfiles = li->li_lfnarray;
return (DW_DLV_OK);
}
if ((li->li_lfnarray = malloc(*srccount * sizeof(char *))) == NULL) {
DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY);
return (DW_DLV_ERROR);
}
for (i = 0, lf = STAILQ_FIRST(&li->li_lflist);
i < *srccount && lf != NULL; i++, lf = STAILQ_NEXT(lf, lf_next)) {
if (lf->lf_fullpath)
li->li_lfnarray[i] = lf->lf_fullpath;
else
li->li_lfnarray[i] = lf->lf_fname;
}
*srcfiles = li->li_lfnarray;
return (DW_DLV_OK);
}
int
dwarf_linebeginstatement(Dwarf_Line ln, Dwarf_Bool *ret_bool,
Dwarf_Error *error)
{
if (ln == NULL || ret_bool == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_bool = ln->ln_stmt;
return (DW_DLV_OK);
}
int
dwarf_lineendsequence(Dwarf_Line ln, Dwarf_Bool *ret_bool, Dwarf_Error *error)
{
if (ln == NULL || ret_bool == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_bool = ln->ln_endseq;
return (DW_DLV_OK);
}
int
dwarf_lineno(Dwarf_Line ln, Dwarf_Unsigned *ret_lineno, Dwarf_Error *error)
{
if (ln == NULL || ret_lineno == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_lineno = ln->ln_lineno;
return (DW_DLV_OK);
}
int
dwarf_line_srcfileno(Dwarf_Line ln, Dwarf_Unsigned *ret_fileno,
Dwarf_Error *error)
{
if (ln == NULL || ret_fileno == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_fileno = ln->ln_fileno;
return (DW_DLV_OK);
}
int
dwarf_lineaddr(Dwarf_Line ln, Dwarf_Addr *ret_lineaddr, Dwarf_Error *error)
{
if (ln == NULL || ret_lineaddr == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_lineaddr = ln->ln_addr;
return (DW_DLV_OK);
}
int
dwarf_lineoff(Dwarf_Line ln, Dwarf_Signed *ret_lineoff, Dwarf_Error *error)
{
if (ln == NULL || ret_lineoff == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
if (ln->ln_column == 0)
*ret_lineoff = -1;
else
*ret_lineoff = (Dwarf_Signed) ln->ln_column;
return (DW_DLV_OK);
}
int
dwarf_linesrc(Dwarf_Line ln, char **ret_linesrc, Dwarf_Error *error)
{
Dwarf_LineInfo li;
Dwarf_LineFile lf;
int i;
if (ln == NULL || ret_linesrc == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
li = ln->ln_li;
assert(li != NULL);
for (i = 1, lf = STAILQ_FIRST(&li->li_lflist);
(Dwarf_Unsigned) i < ln->ln_fileno && lf != NULL;
i++, lf = STAILQ_NEXT(lf, lf_next))
;
if (lf == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_LINE_FILE_NUM_BAD);
return (DW_DLV_ERROR);
}
if (lf->lf_fullpath) {
*ret_linesrc = (char *) lf->lf_fullpath;
return (DW_DLV_OK);
}
*ret_linesrc = lf->lf_fname;
return (DW_DLV_OK);
}
int
dwarf_lineblock(Dwarf_Line ln, Dwarf_Bool *ret_bool, Dwarf_Error *error)
{
if (ln == NULL || ret_bool == NULL) {
DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT);
return (DW_DLV_ERROR);
}
*ret_bool = ln->ln_bblock;
return (DW_DLV_OK);
}