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readelf: decode and print Xen ELF note strings

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Sponsored by:	The FreeBSD Foundation
This commit is contained in:
emaste 2020-03-06 15:58:52 +00:00
parent 362f18547e
commit 2d11d1a3d6
1 changed files with 51 additions and 0 deletions
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51
contrib/elftoolchain/readelf/readelf.c
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@ -3676,6 +3676,33 @@ static struct flag_desc note_feature_ctl_flags[] = {
{ 0, NULL }
};
static void
dump_note_string(const char *description, const char *s, size_t len)
{
size_t i;
int printable = 1;
if (len == 0 || s[--len] != '\0') {
printable = 0;
} else {
for (i = 0; i < len; i++) {
if (!isprint(s[i])) {
printable = 0;
break;
}
}
}
if (printable) {
printf(" %s: %s\n", description, s);
} else {
printf(" description data:");
for (i = 0; i < len; i++)
printf(" %02x", (unsigned char)s[i]);
printf("\n");
}
}
static void
dump_notes_data(struct readelf *re, const char *name, uint32_t type,
const char *buf, size_t sz)
@ -3716,6 +3743,30 @@ dump_notes_data(struct readelf *re, const char *name, uint32_t type,
dump_gnu_property_type_0(re, buf, sz);
return;
}
} else if (strcmp(name, "Xen") == 0) {
switch (type) {
case 5:
dump_note_string("Xen version", buf, sz);
return;
case 6:
dump_note_string("Guest OS", buf, sz);
return;
case 7:
dump_note_string("Guest version", buf, sz);
return;
case 8:
dump_note_string("Loader", buf, sz);
return;
case 9:
dump_note_string("PAE mode", buf, sz);
return;
case 10:
dump_note_string("Features", buf, sz);
return;
case 11:
dump_note_string("BSD symtab", buf, sz);
return;
}
}
unknown:
printf(" description data:");