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Add a gdbarch 'print_auxv_entry' method for FreeBSD ABIs.

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Add a 'print_auxv_entry' method for FreeBSD ABIs that parses
FreeBSD-specific auxiliary vector entries and outputs a suitable
description using fprint_auxv_entry.

gdb/ChangeLog:

	* fbsd-tdep.c: Include "auxv.h".
	(fbsd_print_auxv_entry): New function.
	(fbsd_init_abi): Install gdbarch "print_auxv_entry" method.
This commit is contained in:
John Baldwin 2016-06-15 21:33:42 -07:00
parent 2faa34476d
commit 82372b2f27
2 changed files with 41 additions and 0 deletions
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6
gdb/ChangeLog
View file

@ -1,3 +1,9 @@
2016-06-24 John Baldwin <jhb@FreeBSD.org>
* fbsd-tdep.c: Include "auxv.h".
(fbsd_print_auxv_entry): New function.
(fbsd_init_abi): Install gdbarch "print_auxv_entry" method.
2016-06-24 John Baldwin <jhb@FreeBSD.org>
* auxv.c (fprint_auxv_entry): New function.

35
gdb/fbsd-tdep.c
View file

@ -18,6 +18,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "auxv.h"
#include "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
@ -283,6 +284,39 @@ fbsd_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size)
return note_data;
}
/* Print descriptions of FreeBSD-specific AUXV entries to FILE. */
static void
fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
CORE_ADDR type, CORE_ADDR val)
{
const char *name;
const char *description;
enum auxv_format format;
switch (type)
{
#define _TAGNAME(tag) #tag
#define TAGNAME(tag) _TAGNAME(AT_##tag)
#define TAG(tag, text, kind) \
case AT_FREEBSD_##tag: name = TAGNAME(tag); description = text; format = kind; break
TAG (EXECPATH, _("Executable path"), AUXV_FORMAT_STR);
TAG (CANARY, _("Canary for SSP"), AUXV_FORMAT_HEX);
TAG (CANARYLEN, ("Length of the SSP canary"), AUXV_FORMAT_DEC);
TAG (OSRELDATE, _("OSRELDATE"), AUXV_FORMAT_DEC);
TAG (NCPUS, _("Number of CPUs"), AUXV_FORMAT_DEC);
TAG (PAGESIZES, _("Pagesizes"), AUXV_FORMAT_HEX);
TAG (PAGESIZESLEN, _("Number of pagesizes"), AUXV_FORMAT_DEC);
TAG (TIMEKEEP, _("Pointer to timehands"), AUXV_FORMAT_HEX);
TAG (STACKPROT, _("Initial stack protection"), AUXV_FORMAT_HEX);
default:
default_print_auxv_entry (gdbarch, file, type, val);
return;
}
fprint_auxv_entry (file, name, description, format, type, val);
}
/* To be called from GDB_OSABI_FREEBSD_ELF handlers. */
void
@ -291,4 +325,5 @@ fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_core_pid_to_str (gdbarch, fbsd_core_pid_to_str);
set_gdbarch_core_thread_name (gdbarch, fbsd_core_thread_name);
set_gdbarch_make_corefile_notes (gdbarch, fbsd_make_corefile_notes);
set_gdbarch_print_auxv_entry (gdbarch, fbsd_print_auxv_entry);
}