[PATCH] Add AT_HWCAP2 auxv tag

[PATCH] Add AT_HWCAP2 auxv tag

[Ulrich Weigand]

Hello,

recent ppc64 Linux kernels provide a new auxv entry AT_HWCAP2,
which is currently not recognized by GDB, causing every use of
"info auxv" to show an error.

This patch adds the AT_HWCAP2 define to include/elf/common.h
and handles it in GDB.

OK for mainline (for the include/ part)?

Bye,
Ulrich


include/elf/ChangeLog:

	* common.h (AT_HWCAP2): Define.

gdb/ChangeLog:

	* auxv.c (fprint_target_auxv): Handle AT_HWCAP2.


Index: binutils-gdb/gdb/auxv.c
===================================================================
--- binutils-gdb.orig/gdb/auxv.c
+++ binutils-gdb/gdb/auxv.c
@@ -442,6 +442,7 @@ fprint_target_auxv (struct ui_file *file
 	  TAG (AT_IGNOREPPC, _("Entry should be ignored"), dec);
 	  TAG (AT_BASE_PLATFORM, _("String identifying base platform"), str);
 	  TAG (AT_RANDOM, _("Address of 16 random bytes"), hex);
+	  TAG (AT_HWCAP2, _("Extension of AT_HWCAP"), hex);
 	  TAG (AT_EXECFN, _("File name of executable"), str);
 	  TAG (AT_SECURE, _("Boolean, was exec setuid-like?"), dec);
 	  TAG (AT_SYSINFO, _("Special system info/entry points"), hex);
Index: binutils-gdb/include/elf/common.h
===================================================================
--- binutils-gdb.orig/include/elf/common.h
+++ binutils-gdb/include/elf/common.h
@@ -959,6 +959,7 @@
 #define AT_BASE_PLATFORM 24		/* String identifying real platform,
 					   may differ from AT_PLATFORM.  */
 #define AT_RANDOM	25		/* Address of 16 random bytes.  */
+#define AT_HWCAP2	26		/* Extension of AT_HWCAP.  */
 #define AT_EXECFN	31		/* Filename of executable.  */
 /* Pointer to the global system page used for system calls and other
    nice things.  */
-- 
  Dr. Ulrich Weigand
  GNU/Linux compilers and toolchain
  Ulrich.Weigand@de.ibm.com

Re: [PATCH] Add AT_HWCAP2 auxv tag

[Alan Modra]

On Tue, Jan 28, 2014 at 06:11:40PM +0100, Ulrich Weigand wrote:
> include/elf/ChangeLog:
> 
> 	* common.h (AT_HWCAP2): Define.

OK, but really no need to ask for permission on this one.

-- 
Alan Modra
Australia Development Lab, IBM

Re: [PATCH] Add AT_HWCAP2 auxv tag

[Ulrich Weigand]

Alan Modra wrote:
> On Tue, Jan 28, 2014 at 06:11:40PM +0100, Ulrich Weigand wrote:
> > include/elf/ChangeLog:
> > 
> > 	* common.h (AT_HWCAP2): Define.
> 
> OK, but really no need to ask for permission on this one.

OK, I've checked this in now.

Thanks,
Ulrich

-- 
  Dr. Ulrich Weigand
  GNU/Linux compilers and toolchain
  Ulrich.Weigand@de.ibm.com