Author: emaste
Date: Thu Jan 31 17:04:55 2019
New Revision: 343614
URL: https://svnweb.freebsd.org/changeset/base/343614
Log:
readelf: dump elf note data
Output format is compatible with GNU readelf's handling of unknown note
types (modulo a GNU char signedness bug); future changes will add type-
specific decoding.
Reviewed by: kib
MFC after: 1 week
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Modified:
head/contrib/elftoolchain/readelf/readelf.c
Modified: head/contrib/elftoolchain/readelf/readelf.c
==============================================================================
--- head/contrib/elftoolchain/readelf/readelf.c Thu Jan 31 16:49:06 2019
(r343613)
+++ head/contrib/elftoolchain/readelf/readelf.c Thu Jan 31 17:04:55 2019
(r343614)
@@ -3567,6 +3567,7 @@ dump_notes_content(struct readelf *re, const char *buf
{
Elf_Note *note;
const char *end, *name;
+ uint32_t i;
printf("\nNotes at offset %#010jx with length %#010jx:\n",
(uintmax_t) off, (uintmax_t) sz);
@@ -3578,7 +3579,9 @@ dump_notes_content(struct readelf *re, const char *buf
return;
}
note = (Elf_Note *)(uintptr_t) buf;
- name = (char *)(uintptr_t)(note + 1);
+ buf += sizeof(Elf_Note);
+ name = buf;
+ buf += roundup2(note->n_namesz, 4);
/*
* The name field is required to be nul-terminated, and
* n_namesz includes the terminating nul in observed
@@ -3596,8 +3599,11 @@ dump_notes_content(struct readelf *re, const char *buf
printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz);
printf(" %s\n", note_type(name, re->ehdr.e_type,
note->n_type));
- buf += sizeof(Elf_Note) + roundup2(note->n_namesz, 4) +
- roundup2(note->n_descsz, 4);
+ printf(" description data:");
+ for (i = 0; i < note->n_descsz; i++)
+ printf(" %02x", (unsigned char)buf[i]);
+ printf("\n");
+ buf += roundup2(note->n_descsz, 4);
}
}
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