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[PATCH v2 1/4] Handle FreeBSD-specific AT_EHDRFLAGS and AT_HWCAP auxiliary vector types.
- From: John Baldwin <jhb at FreeBSD dot org>
- To: gdb-patches at sourceware dot org, binutils at sourceware dot org
- Date: Fri, 22 Sep 2017 15:57:10 -0700
- Subject: [PATCH v2 1/4] Handle FreeBSD-specific AT_EHDRFLAGS and AT_HWCAP auxiliary vector types.
- Authentication-results: sourceware.org; auth=none
- References: <20170922225713.26609-1-jhb@FreeBSD.org>
FreeBSD recently added two additional ELF auxiliary vectors. FreeBSD's
AT_HWCAP uses a different number compared to AT_HWCAP on Linux as the
numerical value was already in use for a different vector on FreeBSD.
include/ChangeLog:
* elf/common.h (AT_FREEBSD_EHDRFLAGS, AT_FREEBSD_HWCAP): Define.
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_EHDRFLAGS and
AT_HWCAP.
---
gdb/ChangeLog | 5 +++++
gdb/fbsd-tdep.c | 2 ++
include/ChangeLog | 4 ++++
include/elf/common.h | 2 ++
4 files changed, 13 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index aa50dc9f5b..7788bfc1a9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2017-09-22 John Baldwin <jhb@FreeBSD.org>
+
+ * fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_EHDRFLAGS and
+ AT_HWCAP.
+
2017-09-22 Tom Tromey <tom@tromey.com>
* utils.c (class scoped_input_handler) <m_quit_handler>: Change
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
index 1908269632..85dad6be90 100644
--- a/gdb/fbsd-tdep.c
+++ b/gdb/fbsd-tdep.c
@@ -392,6 +392,8 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
TAG (PAGESIZESLEN, _("Number of pagesizes"), AUXV_FORMAT_DEC);
TAG (TIMEKEEP, _("Pointer to timehands"), AUXV_FORMAT_HEX);
TAG (STACKPROT, _("Initial stack protection"), AUXV_FORMAT_HEX);
+ TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX);
+ TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX);
default:
default_print_auxv_entry (gdbarch, file, type, val);
return;
diff --git a/include/ChangeLog b/include/ChangeLog
index 0ece8de3f7..a563f3eb67 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2017-09-22 John Baldwin <jhb@FreeBSD.org>
+
+ * elf/common.h (AT_FREEBSD_EHDRFLAGS, AT_FREEBSD_HWCAP): Define.
+
2017-09-22 Alexandre Oliva <aoliva@redhat.com>
* dwarf2.def (DW_AT_GNU_locviews): New.
diff --git a/include/elf/common.h b/include/elf/common.h
index d08731cca1..f89ab32889 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -1144,6 +1144,8 @@
#define AT_FREEBSD_PAGESIZESLEN 21 /* Number of pagesizes. */
#define AT_FREEBSD_TIMEKEEP 22 /* Pointer to timehands. */
#define AT_FREEBSD_STACKPROT 23 /* Initial stack protection. */
+#define AT_FREEBSD_EHDRFLAGS 24 /* e_flags field from ELF header. */
+#define AT_FREEBSD_HWCAP 25 /* CPU feature flags. */
#define AT_SUN_UID 2000 /* Effective user ID. */
#define AT_SUN_RUID 2001 /* Real user ID. */
--
2.13.3