[PATCH 2/5] sparc: support for the check_object_attribute ebl hook.

[Jose E. Marchesi <jose dot marchesi at oracle dot com>]

This makes elfutils based utilities to be aware of the ELF attribute
tags defined in sparc targets.

Signed-off-by: Jose E. Marchesi <jose.marchesi@oracle.com>
---
 backends/ChangeLog     |  6 ++++
 backends/Makefile.am   |  2 +-
 backends/sparc_attrs.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 backends/sparc_init.c  |  1 +
 4 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 backends/sparc_attrs.c

diff --git a/backends/ChangeLog b/backends/ChangeLog
index 9d98f35..b5e1940 100644
--- a/backends/ChangeLog
+++ b/backends/ChangeLog
@@ -1,3 +1,9 @@
+2015-10-02  Jose E. Marchesi  <jose.marchesi@oracle.com>
+
+	* sparc_attrs.c: New file.
+	* Makefile.am (sparc_SRCS): Added sparc_attrs.c
+	* sparc_init.c (sparc_init): Hook sparc_check_object_attribute.
+
 2015-09-22  Mark Wielaard  <mjw@redhat.com>
 
 	* arm_attrs.c: Remove old-style function definitions.
diff --git a/backends/Makefile.am b/backends/Makefile.am
index 21d7bd2..cefe5eb 100644
--- a/backends/Makefile.am
+++ b/backends/Makefile.am
@@ -84,7 +84,7 @@ libebl_aarch64_pic_a_SOURCES = $(aarch64_SRCS)
 am_libebl_aarch64_pic_a_OBJECTS = $(aarch64_SRCS:.c=.os)
 
 sparc_SRCS = sparc_init.c sparc_symbol.c sparc_regs.c sparc_retval.c \
-	     sparc_corenote.c sparc64_corenote.c sparc_auxv.c
+	     sparc_corenote.c sparc64_corenote.c sparc_auxv.c sparc_attrs.c
 libebl_sparc_pic_a_SOURCES = $(sparc_SRCS)
 am_libebl_sparc_pic_a_OBJECTS = $(sparc_SRCS:.c=.os)
 
diff --git a/backends/sparc_attrs.c b/backends/sparc_attrs.c
new file mode 100644
index 0000000..cf5086b
--- /dev/null
+++ b/backends/sparc_attrs.c
@@ -0,0 +1,75 @@
+/* Object attribute tags for SPARC.
+   Copyright (C) 2015 Oracle, Inc.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   elfutils is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include <dwarf.h>
+
+#define BACKEND sparc_
+#include "libebl_CPU.h"
+
+bool
+sparc_check_object_attribute (Ebl *ebl __attribute__ ((unused)),
+			      const char *vendor, int tag, uint64_t value,
+			      const char **tag_name, const char **value_name)
+{
+  if (!strcmp (vendor, "gnu"))
+    switch (tag)
+      {
+      case 4:
+	*tag_name = "GNU_Sparc_HWCAPS";
+	static const char *hwcaps[32] =
+	  {
+	    "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2",
+	    "asi_blk_init", "fmaf", NULL, "vis3", "hpc", "random", "trans", "fjfmau",
+	    "ima", "asi_cache_sparing", "aes", "des", "kasumi", "camellia",
+	    "md5", "sha1", "sha256", "sha512", "mpmul", "mont", "pause",
+	    "cbcond", "crc32c", NULL, NULL
+	  };
+	if (value < 32 && hwcaps[value] != NULL)
+	  *value_name = hwcaps[value];
+	return true;
+
+      case 8:
+	*tag_name = "GNU_Sparc_HWCAPS2";
+	static const char *hwcaps2[32] =
+	  {
+	    "fjathplus", "vis3b", "adp", "sparc5", "mwait", "xmpmul",
+	    "xmont", "nsec", "fjathhpc", "fjdes", "fjaes"
+	  };
+	if (value < 32 && hwcaps2[value] != NULL)
+	  *value_name = hwcaps2[value];
+	return true;
+      }
+
+  return false;
+}
+
diff --git a/backends/sparc_init.c b/backends/sparc_init.c
index 18d7349..d3c2009 100644
--- a/backends/sparc_init.c
+++ b/backends/sparc_init.c
@@ -70,6 +70,7 @@ sparc_init (Elf *elf __attribute__ ((unused)),
   HOOK (eh, auxv_info);
   HOOK (eh, register_info);
   HOOK (eh, return_value_location);
+  HOOK (eh, check_object_attribute);
 
   return MODVERSION;
 }
-- 
2.3.4