bfd/ChangeLog

	* elf32-avr.c: Add DIFF relocations for AVR.
	(avr_final_link_relocate): Handle the DIFF relocs.
	(bfd_elf_avr_diff_reloc): New.
	(elf32_avr_is_diff_reloc): New.
	(elf32_avr_adjust_diff_reloc_value): Reduce difference value.
	(elf32_avr_relax_delete_bytes): Recompute difference after deleting
	bytes.

	* reloc.c: Add BFD_RELOC_AVR_DIFF8/16/32 relocations

gas/ChangeLog

	* config/tc-avr.c: Add new flag mlink-relax.
	(md_show_usage): Add flag and help text.
	(md_parse_option): Record whether link relax is turned on.
	(relaxable_section): New.
	(avr_validate_fix_sub): New.
	(avr_force_relocation): New.
	(md_apply_fix): Generate DIFF reloc.
	(avr_allow_local_subtract): New.

	* config/tc-avr.h (TC_LINKRELAX_FIXUP): Define to 0.
	(TC_FORCE_RELOCATION): Define.
	(TC_FORCE_RELOCATION_SUB_SAME): Define.
	(TC_VALIDATE_FIX_SUB): Define.
	(avr_force_relocation): Declare.
	(avr_validate_fix_sub): Declare.
	(md_allow_local_subtract): Define.
	(avr_allow_local_subtract): Declare.

gas/testsuite/ChangeLog

	* gas/avr/diffreloc_withrelax.d: New testcase.
	* gas/avr/noreloc_withoutrelax.d: Likewise.
	* gas/avr/relax.s: Likewise.

include/ChangeLog

	* elf/avr.h: Add new DIFF relocs.

ld/testsuite/ChangeLog

	* ld-avr/norelax_diff.d: New testcase.
	* ld-avr/relax_diff.d: Likewise.
	* ld-avr/relax.s: Likewise.

5 files changed, 76 insertions, 0 deletions

diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index cbc12f6..e239ce8 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2014-04-10  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	* ld-avr/norelax_diff.d: New testcase.
+	* ld-avr/relax_diff.d: Likewise.
+	* ld-avr/relax.s: Likewise.
+
 2014-04-05  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* ld-plugin/lto.exp: Make "-Wp," prefix optional when filtering
diff --git a/ld/testsuite/ld-avr/avr.exp b/ld/testsuite/ld-avr/avr.exp
new file mode 100644
index 0000000..d196d96
--- /dev/null
+++ b/ld/testsuite/ld-avr/avr.exp
@@ -0,0 +1,31 @@
+# Copyright 2014
+# Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program 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 a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  
+
+#
+# Some AVR tests
+#
+
+if {![istarget avr-*-*]} {
+    return
+}
+
+set avr_test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
+foreach avr_test $avr_test_list {
+    verbose [file rootname $avr_test]
+    run_dump_test [file rootname $avr_test]
+}
+
diff --git a/ld/testsuite/ld-avr/norelax_diff.d b/ld/testsuite/ld-avr/norelax_diff.d
new file mode 100644
index 0000000..1891d6e
--- /dev/null
+++ b/ld/testsuite/ld-avr/norelax_diff.d
@@ -0,0 +1,13 @@
+#name: AVR No change in behavior without relaxation
+#as: -mmcu=avrxmega2 
+#ld:  -mavrxmega2
+#source: relax.s
+#objdump: -s
+#target: avr-*-*
+
+.*:     file format elf32-avr
+
+Contents of section .text:
+ 0000 0c940000                             .*
+Contents of section .data:
+ 802000 0400                               .* 
diff --git a/ld/testsuite/ld-avr/relax.s b/ld/testsuite/ld-avr/relax.s
new file mode 100644
index 0000000..fbb7bae
--- /dev/null
+++ b/ld/testsuite/ld-avr/relax.s
@@ -0,0 +1,12 @@
+    .file "relax.s"
+.section	.text,"ax",@progbits
+main:
+L1:
+    jmp  L1
+L2:
+.global	x
+	.section .data
+	.type	x, @object
+	.size	x, 2
+x:
+	.word	L2 - L1
diff --git a/ld/testsuite/ld-avr/relax_diff.d b/ld/testsuite/ld-avr/relax_diff.d
new file mode 100644
index 0000000..b84df81
--- /dev/null
+++ b/ld/testsuite/ld-avr/relax_diff.d
@@ -0,0 +1,14 @@
+#name: AVR Account for relaxation in label differences
+#as: -mmcu=avrxmega2 -mlink-relax
+#ld:  -mavrxmega2 --relax
+#source: relax.s
+#objdump: -s
+#target: avr-*-*
+
+.*:     file format elf32-avr
+
+Contents of section .text:
+ 0000 ffcf                                 .*
+Contents of section .data:
+ 802000 0200                               .*
+