* [PATCH 1/2] Support AT_HWCAP2 on FreeBSD.
@ 2018-10-08 22:54 John Baldwin
2018-10-08 22:54 ` [PATCH 2/2] Treat all unknown auxv tags on FreeBSD as unknown John Baldwin
2018-10-16 16:31 ` [PATCH 1/2] Support AT_HWCAP2 on FreeBSD Nick Clifton
0 siblings, 2 replies; 3+ messages in thread
From: John Baldwin @ 2018-10-08 22:54 UTC (permalink / raw)
To: gdb-patches, binutils
include/ChangeLog:
* elf/common.h (AT_FREEBSD_HWCAP2): Define.
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_FREEBSD_HWCAP2.
---
gdb/ChangeLog | 4 ++++
gdb/fbsd-tdep.c | 1 +
include/ChangeLog | 4 ++++
include/elf/common.h | 1 +
4 files changed, 10 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f074385c30..24aeb467b1 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2018-10-08 John Baldwin <jhb@FreeBSD.org>
+
+ * fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_FREEBSD_HWCAP2.
+
2018-10-08 John Baldwin <jhb@FreeBSD.org>
* Makefile.in (ALLDEPFILES): Add riscv-fbsd-nat.c.
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
index 070d448b4e..e948f28abc 100644
--- a/gdb/fbsd-tdep.c
+++ b/gdb/fbsd-tdep.c
@@ -1504,6 +1504,7 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
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);
+ TAG (HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
default:
default_print_auxv_entry (gdbarch, file, type, val);
return;
diff --git a/include/ChangeLog b/include/ChangeLog
index ce95a61662..7dba7c9557 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2018-10-08 John Baldwin <jhb@FreeBSD.org>
+
+ * elf/common.h (AT_FREEBSD_HWCAP2): Define.
+
2018-10-08 Alan Modra <amodra@gmail.com>
* bfdlink.h (struct bfd_link_info): Add load_phdrs field.
diff --git a/include/elf/common.h b/include/elf/common.h
index e194274305..da9ea036f4 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -1226,6 +1226,7 @@
#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_FREEBSD_HWCAP2 26 /* CPU feature flags 2. */
#define AT_SUN_UID 2000 /* Effective user ID. */
#define AT_SUN_RUID 2001 /* Real user ID. */
--
2.18.0
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 2/2] Treat all unknown auxv tags on FreeBSD as unknown.
2018-10-08 22:54 [PATCH 1/2] Support AT_HWCAP2 on FreeBSD John Baldwin
@ 2018-10-08 22:54 ` John Baldwin
2018-10-16 16:31 ` [PATCH 1/2] Support AT_HWCAP2 on FreeBSD Nick Clifton
1 sibling, 0 replies; 3+ messages in thread
From: John Baldwin @ 2018-10-08 22:54 UTC (permalink / raw)
To: gdb-patches, binutils
Previously, default_print_auxv_entry was called for any auxv entries
without a known AT_FREEBSD_* tag. However, this resulted in false
positive matches when FreeBSD added a new tag that has an existing
AT_* tag with a different meaning. Instead, only call
default_print_auxv_entry for specific tag values for which FreeBSD
matches the default AT_* values.
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_print_auxv_entry): Only use
default_print_auxv_entry for specific tag values.
---
gdb/ChangeLog | 5 +++++
gdb/fbsd-tdep.c | 26 ++++++++++++++++++++------
2 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 24aeb467b1..6300570b6f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-08 John Baldwin <jhb@FreeBSD.org>
+
+ * fbsd-tdep.c (fbsd_print_auxv_entry): Only use
+ default_print_auxv_entry for specific tag values.
+
2018-10-08 John Baldwin <jhb@FreeBSD.org>
* fbsd-tdep.c (fbsd_print_auxv_entry): Handle AT_FREEBSD_HWCAP2.
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
index e948f28abc..28e8d0efc4 100644
--- a/gdb/fbsd-tdep.c
+++ b/gdb/fbsd-tdep.c
@@ -1483,12 +1483,29 @@ 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;
+ const char *name = "???";
+ const char *description = "";
+ enum auxv_format format = AUXV_FORMAT_HEX;
switch (type)
{
+ case AT_NULL:
+ case AT_IGNORE:
+ case AT_EXECFD:
+ case AT_PHDR:
+ case AT_PHENT:
+ case AT_PHNUM:
+ case AT_PAGESZ:
+ case AT_BASE:
+ case AT_FLAGS:
+ case AT_ENTRY:
+ case AT_NOTELF:
+ case AT_UID:
+ case AT_EUID:
+ case AT_GID:
+ case AT_EGID:
+ default_print_auxv_entry (gdbarch, file, type, val);
+ return;
#define _TAGNAME(tag) #tag
#define TAGNAME(tag) _TAGNAME(AT_##tag)
#define TAG(tag, text, kind) \
@@ -1505,9 +1522,6 @@ fbsd_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file,
TAG (EHDRFLAGS, _("ELF header e_flags"), AUXV_FORMAT_HEX);
TAG (HWCAP, _("Machine-dependent CPU capability hints"), AUXV_FORMAT_HEX);
TAG (HWCAP2, _("Extension of AT_HWCAP"), AUXV_FORMAT_HEX);
- default:
- default_print_auxv_entry (gdbarch, file, type, val);
- return;
}
fprint_auxv_entry (file, name, description, format, type, val);
--
2.18.0
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] Support AT_HWCAP2 on FreeBSD.
2018-10-08 22:54 [PATCH 1/2] Support AT_HWCAP2 on FreeBSD John Baldwin
2018-10-08 22:54 ` [PATCH 2/2] Treat all unknown auxv tags on FreeBSD as unknown John Baldwin
@ 2018-10-16 16:31 ` Nick Clifton
1 sibling, 0 replies; 3+ messages in thread
From: Nick Clifton @ 2018-10-16 16:31 UTC (permalink / raw)
To: John Baldwin, gdb-patches, binutils
Hi John,
> include/ChangeLog:
>
> * elf/common.h (AT_FREEBSD_HWCAP2): Define.
Approved from a binutils point of view.
Cheers
Nick
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-10-16 16:31 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2018-10-08 22:54 [PATCH 1/2] Support AT_HWCAP2 on FreeBSD John Baldwin
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2018-10-16 16:31 ` [PATCH 1/2] Support AT_HWCAP2 on FreeBSD Nick Clifton
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