From 49dff77b6e4a99a16583b1466e260e679661e0de Mon Sep 17 00:00:00 2001
From: Julian Brown <julian@codesourcery.com>
Date: Fri, 1 May 2009 13:49:19 +0000
Subject: [PATCH] 	ld/testsuite/ 	* ld-arm/arm-elf.exp (armeabitests):
 Add thumb2-bl-blx-interwork test. 	* ld-arm/thumb2-bl-blx-interwork.s:
 New. 	* ld-arm/thumb2-bl-blx-interwork.d: New.

---
 ld/testsuite/ChangeLog                        |  6 ++
 ld/testsuite/ld-arm/arm-elf.exp               |  3 +
 ld/testsuite/ld-arm/thumb2-bl-blx-interwork.d | 71 +++++++++++++++
 ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s | 87 +++++++++++++++++++
 4 files changed, 167 insertions(+)
 create mode 100644 ld/testsuite/ld-arm/thumb2-bl-blx-interwork.d
 create mode 100644 ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s

diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index 91bb3ed274..63c51ffc89 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2009-05-01  Julian Brown  <julian@codesourcery.com>
+
+	* ld-arm/arm-elf.exp (armeabitests): Add thumb2-bl-blx-interwork test.
+	* ld-arm/thumb2-bl-blx-interwork.s: New.
+	* ld-arm/thumb2-bl-blx-interwork.d: New.  
+
 2009-04-30  Nick Clifton  <nickc@redhat.com>
 
 	* ld-ifunc: New directory.
diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp
index 04bbcf2a84..218bfb5302 100644
--- a/ld/testsuite/ld-arm/arm-elf.exp
+++ b/ld/testsuite/ld-arm/arm-elf.exp
@@ -247,6 +247,9 @@ set armeabitests {
      {"Thumb-2 Interworked branch" "-T arm.ld" "" {thumb2-b-interwork.s}
       {{objdump -dr thumb2-b-interwork.d}}
       "thumb2-b-interwork"}
+    {"BL/BLX interworking" "-T arm.ld" "" {thumb2-bl-blx-interwork.s}
+     {{objdump -dr thumb2-bl-blx-interwork.d}}
+     "thumb2-bl-blx-interwork"}
     {"ARMv4 interworking" "-static -T arm.ld --fix-v4bx-interworking" "--fix-v4bx -meabi=4" {armv4-bx.s}
      {{objdump -d armv4-bx.d}}
      "armv4-bx"}
diff --git a/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.d b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.d
new file mode 100644
index 0000000000..ba5a73287c
--- /dev/null
+++ b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.d
@@ -0,0 +1,71 @@
+
+.*:     file format .*
+
+
+Disassembly of section \.text:
+
+00008000 <_start>:
+    8000:	f000 e81a 	blx	8038 <arm0>
+    8004:	f000 e81e 	blx	8044 <arm4>
+    8008:	bf00      	nop
+    800a:	f000 e816 	blx	8038 <arm0>
+    800e:	f000 e81a 	blx	8044 <arm4>
+    8012:	bf00      	nop
+    8014:	f000 f818 	bl	8048 <thumb0>
+    8018:	f000 f81b 	bl	8052 <thumb2>
+    801c:	f000 f81e 	bl	805c <thumb4>
+    8020:	f000 f821 	bl	8066 <thumb6>
+    8024:	bf00      	nop
+    8026:	f000 f80f 	bl	8048 <thumb0>
+    802a:	f000 f812 	bl	8052 <thumb2>
+    802e:	f000 f815 	bl	805c <thumb4>
+    8032:	f000 f818 	bl	8066 <thumb6>
+    8036:	bf00      	nop
+
+00008038 <arm0>:
+    8038:	e12fff1e 	bx	lr
+    803c:	e320f000 	nop	\{0\}
+    8040:	e320f000 	nop	\{0\}
+
+00008044 <arm4>:
+    8044:	e12fff1e 	bx	lr
+
+00008048 <thumb0>:
+    8048:	4770      	bx	lr
+    804a:	bf00      	nop
+    804c:	f3af 8000 	nop\.w
+    8050:	bf00      	nop
+
+00008052 <thumb2>:
+    8052:	4770      	bx	lr
+    8054:	f3af 8000 	nop\.w
+    8058:	bf00      	nop
+    805a:	bf00      	nop
+
+0000805c <thumb4>:
+    805c:	4770      	bx	lr
+    805e:	bf00      	nop
+    8060:	bf00      	nop
+    8062:	bf00      	nop
+    8064:	bf00      	nop
+
+00008066 <thumb6>:
+    8066:	4770      	bx	lr
+
+00008068 <backwards>:
+    8068:	f7ff efe6 	blx	8038 <arm0>
+    806c:	f7ff efea 	blx	8044 <arm4>
+    8070:	bf00      	nop
+    8072:	f7ff efe2 	blx	8038 <arm0>
+    8076:	f7ff efe6 	blx	8044 <arm4>
+    807a:	bf00      	nop
+    807c:	f7ff ffe4 	bl	8048 <thumb0>
+    8080:	f7ff ffe7 	bl	8052 <thumb2>
+    8084:	f7ff ffea 	bl	805c <thumb4>
+    8088:	f7ff ffed 	bl	8066 <thumb6>
+    808c:	bf00      	nop
+    808e:	f7ff ffdb 	bl	8048 <thumb0>
+    8092:	f7ff ffde 	bl	8052 <thumb2>
+    8096:	f7ff ffe1 	bl	805c <thumb4>
+    809a:	f7ff ffe4 	bl	8066 <thumb6>
+    809e:	bf00      	nop
diff --git a/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s
new file mode 100644
index 0000000000..dba46af752
--- /dev/null
+++ b/ld/testsuite/ld-arm/thumb2-bl-blx-interwork.s
@@ -0,0 +1,87 @@
+	.arch armv7-a
+	.global _start
+	.syntax unified
+	.text
+	.thumb
+
+	.macro do_calls
+	@ The following four instructions are accepted by gas, but generate
+	@ meaningless code.
+	@bl.w arm0
+	@bl.w arm4
+	@nop
+	@bl.w arm0
+	@bl.w arm4
+	@nop
+	blx.w arm0
+	blx.w arm4
+	nop
+	blx.w arm0
+	blx.w arm4
+	nop
+	bl.w thumb0
+	bl.w thumb2
+	bl.w thumb4
+	bl.w thumb6
+	nop
+	bl.w thumb0
+	bl.w thumb2
+	bl.w thumb4
+	bl.w thumb6
+	nop
+	@ These eight are all accepted by gas, but generate bad code.
+	@blx.w thumb0
+	@blx.w thumb2
+	@blx.w thumb4
+	@blx.w thumb6
+	@nop
+	@blx.w thumb0
+	@blx.w thumb2
+	@blx.w thumb4
+	@blx.w thumb6
+	.endm
+
+	.thumb_func
+	.align 3
+_start:
+	do_calls
+
+	.arm
+	.align 3
+arm0:
+	bx lr
+
+	.align 3
+	nop
+arm4:
+	bx lr
+
+	.thumb
+	.thumb_func
+	.align 3
+thumb0:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+thumb2:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+	nop
+thumb4:
+	bx lr
+
+	.thumb_func
+	.align 3
+	nop
+	nop
+	nop
+thumb6:
+	bx lr
+
+backwards:
+	do_calls
-- 
2.34.1