+2019-04-30 Mark Wielaard <mark@klomp.org>
+
+ * note_xlate.h (elf_cvt_note): Indicate we only translated the note
+ header if we ran out of data by updating len, src and dest.
+
2019-04-01 Mao Han <han_mao@c-sky.com>
* elf.h: Update from glibc.
note_len += n->n_namesz;
note_len = nhdr8 ? NOTE_ALIGN8 (note_len) : NOTE_ALIGN4 (note_len);
if (note_len > len || note_len < sizeof *n)
- break;
+ {
+ /* Header was translated, nothing else. */
+ len -= sizeof *n;
+ src += sizeof *n;
+ dest += sizeof *n;
+ break;
+ }
/* data as a whole needs to be aligned. */
note_len += n->n_descsz;
note_len = nhdr8 ? NOTE_ALIGN8 (note_len) : NOTE_ALIGN4 (note_len);
if (note_len > len || note_len < sizeof *n)
- break;
+ {
+ /* Header was translated, nothing else. */
+ len -= sizeof *n;
+ src += sizeof *n;
+ dest += sizeof *n;
+ break;
+ }
/* Copy or skip the note data. */
size_t note_data_len = note_len - sizeof *n;
+2019-04-30 Mark Wielaard <mark@klomp.org>
+
+ * xlate_notes.c: New file.
+ * run-xlate-note.sh: New test.
+ * Makefile.am (check_PROGRAMS): Add xlate_notes.
+ (TESTS): Add run-xlate-note.sh.
+ (EXTRA_DIST): Likewise.
+ (xlate_notes_LDADD): New variable.
+
2019-04-30 Mark Wielaard <mark@klomp.org>
* backtrace-dwarf.c (frame_callback): Explicitly check symname is
fillfile dwarf_default_lower_bound dwarf-die-addr-die \
get-units-invalid get-units-split attr-integrate-skel \
all-dwarf-ranges unit-info next_cfi \
- elfcopy addsections
+ elfcopy addsections xlate_notes
asm_TESTS = asm-tst1 asm-tst2 asm-tst3 asm-tst4 asm-tst5 \
asm-tst6 asm-tst7 asm-tst8 asm-tst9
run-next-cfi.sh run-next-cfi-self.sh \
run-copyadd-sections.sh run-copymany-sections.sh \
run-typeiter-many.sh run-strip-test-many.sh \
- run-strip-version.sh
+ run-strip-version.sh run-xlate-note.sh
if !BIARCH
export ELFUTILS_DISABLE_BIARCH = 1
testfile-debug-rel-ppc64-g.o.bz2 \
testfile-debug-rel-ppc64-z.o.bz2 \
testfile-debug-rel-ppc64.o.bz2 \
- run-strip-version.sh testfile-version.bz2
+ run-strip-version.sh testfile-version.bz2 \
+ run-xlate-note.sh
if USE_VALGRIND
valgrind_cmd='valgrind -q --leak-check=full --error-exitcode=1'
next_cfi_LDADD = $(libelf) $(libdw)
elfcopy_LDADD = $(libelf)
addsections_LDADD = $(libelf)
+xlate_notes_LDADD = $(libelf)
# We want to test the libelf header against the system elf.h header.
# Don't include any -I CPPFLAGS. Except when we install our own elf.h.
--- /dev/null
+# Copyright (C) 2019 Red Hat, Inc.
+# This file is part of elfutils.
+#
+# This file 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 3 of the License, or
+# (at your option) any later version.
+#
+# elfutils 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, see <http://www.gnu.org/licenses/>.
+
+. $srcdir/test-subr.sh
+
+testfiles testfileppc32
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileppc32 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfileppc64
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileppc64 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfiles390
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfiles390 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfiles390x
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfiles390x << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfileaarch64
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileaarch64 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfilearm
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfilearm << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfile_gnu_props.32be.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.32be.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 12,12
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.32le.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.32le.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 12,12
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.64be.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.64be.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 16,16
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.64le.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.64le.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 16,16
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
--- /dev/null
+/* Test program for extracting ELF Note headers and getting whole notes.
+ Copyright (C) 2019 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file 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 3 of the License, or
+ (at your option) any later version.
+
+ elfutils 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, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include ELFUTILS_HEADER(elf)
+#include <gelf.h>
+
+int
+main (int argc, char *argv[])
+{
+ if (argc != 2)
+ {
+ printf ("No ELF file given as argument\n");
+ exit (1);
+ }
+
+ const char *fname = argv[1];
+
+ // Initialize libelf.
+ elf_version (EV_CURRENT);
+
+ /* Read the ELF from disk now. */
+ int fd = open (fname, O_RDONLY);
+ if (fd == -1)
+ {
+ printf ("cannot open '%s': %s\n", fname, strerror (errno));
+ exit (1);
+ }
+
+ Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
+ if (elf == NULL)
+ {
+ printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ GElf_Ehdr ehdr;
+ if (gelf_getehdr (elf, &ehdr) == NULL)
+ {
+ printf ("cannot get Ehdr: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* Search for all SHT_NOTE sections. */
+ Elf_Scn *scn = NULL;
+ while ((scn = elf_nextscn (elf, scn)) != NULL)
+ {
+ /* Get the header. */
+ GElf_Shdr shdr;
+ if (gelf_getshdr (scn, &shdr) == NULL)
+ {
+ printf ("couldn't get shdr: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ if (shdr.sh_type == SHT_NOTE)
+ {
+ printf ("Notes in section %zd:\n", elf_ndxscn (scn));
+
+ Elf_Data *raw = elf_rawdata (scn, NULL);
+ if (raw == NULL)
+ {
+ printf ("couldn't get raw data: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ Elf_Data *data = elf_getdata (scn, NULL);
+ if (data == NULL)
+ {
+ printf ("couldn't get data: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ size_t off = 0;
+ size_t next;
+ GElf_Nhdr nhdr;
+ size_t n_off;
+ size_t d_off;
+ while ((next = gelf_getnote (data, off, &nhdr, &n_off, &d_off)) > 0)
+ {
+ /* Now just get the note header "raw" (don't
+ copy/translate the note data). This only handles
+ traditional GNU ELF Notes, so we still use the next
+ from gelf_getnote (padding is different for new style
+ ELF_T_NHDR8 notes). */
+ Elf32_Nhdr nh;
+ Elf_Data src =
+ {
+ .d_version = EV_CURRENT, .d_type = ELF_T_NHDR,
+ .d_size = sizeof nh
+ };
+ Elf_Data dst = src;
+ src.d_buf = raw->d_buf + off;
+ dst.d_buf = &nh;
+
+ if (elf32_xlatetom (&dst, &src, ehdr.e_ident[EI_DATA]) == NULL)
+ {
+ printf ("couldn't xlate note: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ printf ("type: %" PRId32 ",%" PRId32
+ ", namesz: %" PRId32 ",%" PRId32
+ ", descsz: %" PRId32 ",%" PRId32 "\n",
+ nhdr.n_type, nh.n_type,
+ nhdr.n_namesz, nh.n_namesz,
+ nhdr.n_descsz, nh.n_descsz);
+
+ if (nhdr.n_type != nh.n_type
+ || nhdr.n_namesz != nh.n_namesz
+ || nhdr.n_descsz != nh.n_descsz)
+ {
+ printf ("Nhdrs not equal!\n");
+ exit (1);
+ }
+
+ off = next;
+ }
+ }
+
+ }
+
+ if (elf_end (elf) != 0)
+ {
+ printf ("failure in elf_end: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ close (fd);
+
+ return 0;
+}
projects / thirdparty / elfutils.git / commitdiff
