2010-02-21 Doug Kwan <dougkwan@google.com>

	* arm.cc (Arm_relocate_functions::arm_branch_common): Fix bug in
	handling of the maximum backward branch offset.
     	(Arm_relocate_functions::thumb_branch_common): Ditto.
	* testsuite/Makefile.am (check_SCRIPTS): Add arm_branch_in_range.sh.
	(check_DATA): Add arm_bl_in_range.stdout, arm_bl_out_of_range.stdout
	thumb_bl_in_range.stdout, thumb_bl_out_of_range.stdout,
	thumb2_bl_in_range.stdout and thumb2_bl_out_of_range.stdout.
	(arm_bl_in_range.stdout, arm_bl_in_range, arm_bl_in_range.o,
	arm_bl_out_of_range.stdout, arm_bl_out_of_range,
	arm_bl_out_of_range.o, thumb_bl_in_range.stdout, thumb_bl_in_range,
	thumb_bl_in_range.o, thumb_bl_out_of_range.stdout,
	thumb_bl_out_of_range thumb_bl_out_of_range.o,
	thumb2_bl_in_range.stdout, thumb2_bl_in_range, thumb2_bl_in_range.o
	thumb2_bl_out_of_range.stdout, thumb2_bl_out_of_range,
	thumb2_bl_out_of_range.o): New rules.
	(MOSTLYCLEANFILES): Add arm_bl_in_range, arm_bl_out_of_range,
	thumb_bl_in_range, thumb_bl_out_of_range, thumb2_bl_in_range and
	thumb2_bl_out_of_range
	* testsuite/Makefile.in: Regenerate.
	* testsuite/arm_bl_in_range.s: New file.
	* testsuite/arm_bl_out_of_range.s: Ditto.
	* testsuite/arm_branch_in_range.sh: Ditto.
	* testsuite/arm_branch_range.t: Ditto.
	* testsuite/thumb2_branch_range.t: Ditto.
	* testsuite/thumb_bl_in_range.s: Ditto.
	* testsuite/thumb_bl_out_of_range.s: Ditto.
	* testsuite/thumb_branch_range.t: Ditto.

1 files changed, 56 insertions, 0 deletions

diff --git a/gold/testsuite/thumb_bl_in_range.s b/gold/testsuite/thumb_bl_in_range.s
new file mode 100644
index 0000000..4a40ae2
--- /dev/null
+++ b/gold/testsuite/thumb_bl_in_range.s
@@ -0,0 +1,56 @@
+# thumb_bl_in_range.s
+# Test THUMB/THUMB-2 bl instructions just within the branch range limits.
+	.syntax	unified
+
+	.section	.text.pre,"x"
+
+# Add padding so that target is just in branch range. 
+	.space	8
+
+	.global	_backward_target
+	.code	16
+	.thumb_func
+	.type	_backword_target, %function
+_backward_target:
+	bx	lr
+	.size	_backward_target, .-_backward_target
+	
+	.text
+
+# Define _start so that linker does not complain.
+	.global	_start
+	.code	32
+	.align	2
+	.type	_start, %function
+_start:
+	bx	lr
+	.size	_start, .-_start
+
+	.global	_backward_test
+	.code	16
+	.thumb_func
+	.type	_backward_test, %function
+_backward_test:
+	bl	_backward_target
+	.size	_backward_test, .-_backward_test
+
+	.global	_forward_test
+	.code	16
+	.thumb_func
+	.type	_forward_test, %function
+_forward_test:
+	bl	_forward_target
+	.size	_forward_test, .-_forward_test
+	
+	.section	.text.post,"x"
+
+# Add padding so that target is just in branch range. 
+	.space	10
+
+	.global	_forward_target
+	.code	16
+	.thumb_func
+	.type	_forward_target, %function
+_forward_target:
+	bx	lr
+	.size	_forward_target, .-_forward_target