From 419df66790567e772b1d70cb156bba2935702e05 Mon Sep 17 00:00:00 2001
From: rsandifo <rsandifo>
Date: Wed, 10 Nov 2010 13:36:29 +0000
Subject: [PATCH] gas/ 	* config/tc-arm.c (do_t_branch): Treat (PLT) branches
 as wide.

gas/testsuite/
	* gas/arm/plt-1.s, gas/arm/plt-1.d: New test.
---
 gas/ChangeLog                 |  4 ++++
 gas/config/tc-arm.c           |  6 ++++--
 gas/testsuite/ChangeLog       |  4 ++++
 gas/testsuite/gas/arm/plt-1.d | 38 ++++++++++++++++++++++++++++++++++++++
 gas/testsuite/gas/arm/plt-1.s | 27 +++++++++++++++++++++++++++
 5 files changed, 77 insertions(+), 2 deletions(-)
 create mode 100644 gas/testsuite/gas/arm/plt-1.d
 create mode 100644 gas/testsuite/gas/arm/plt-1.s

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 8433afde61..9fee273103 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-10  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	* config/tc-arm.c (do_t_branch): Treat (PLT) branches as wide.
+
 2010-11-05  Nick Clifton  <nickc@redhat.com>
 
 	* config/tc-cr16.c (getprocreg_image): Fix typo MAX_PREG ->
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 8dd342bdec..9a8734293c 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -2213,7 +2213,7 @@ create_neon_reg_alias (char *newname, char *p)
   struct reg_entry mybasereg;
   struct neon_type ntype;
   struct neon_typed_alias typeinfo;
-  char *namebuf, *nameend;
+  char *namebuf, *nameend ATTRIBUTE_UNUSED;
   int namelen;
 
   typeinfo.defined = 0;
@@ -9683,7 +9683,9 @@ do_t_branch (void)
   else
     opcode = inst.instruction;
 
-  if (unified_syntax && inst.size_req == 4)
+  if (unified_syntax
+      && (inst.size_req == 4
+	  || (inst.size_req != 2 && inst.operands[0].hasreloc)))
     {
       inst.instruction = THUMB_OP32(opcode);
       if (cond == COND_ALWAYS)
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 7c4bdc2184..b6e621903f 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-10  Richard Sandiford  <richard.sandiford@linaro.org>
+
+	* gas/arm/plt-1.s, gas/arm/plt-1.d: New test.
+
 2010-11-08  Thomas Schwinge  <thomas@schwinge.name>
 
 	* lib/gas-defs.exp (is_elf_format): Consider for *-*-gnu*, too.
diff --git a/gas/testsuite/gas/arm/plt-1.d b/gas/testsuite/gas/arm/plt-1.d
new file mode 100644
index 0000000000..ba25f8de19
--- /dev/null
+++ b/gas/testsuite/gas/arm/plt-1.d
@@ -0,0 +1,38 @@
+# name: Thumb branch to PLT
+# as:
+# objdump: -dr
+# This test is only valid on ELF based ports.
+#not-target: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
+
+.*: +file format .*arm.*
+
+
+Disassembly of section \.text:
+
+0+000 <Strong1>:
+   0:	f7ff bffe 	b\.w	12 <Strong2>
+			0: R_ARM_THM_JUMP24	Strong2
+   4:	f7ff bffe 	b\.w	12 <Strong2>
+			4: R_ARM_THM_JUMP24	Strong2
+   8:	e7fe      	b\.n	12 <Strong2>
+			8: R_ARM_THM_JUMP11	Strong2
+   a:	e7fe      	b\.n	12 <Strong2>
+			a: R_ARM_THM_JUMP11	Strong2
+   c:	f7ff bffe 	b\.w	12 <Strong2>
+			c: R_ARM_THM_JUMP24	Strong2
+  10:	e7fe      	b\.n	12 <Strong2>
+			10: R_ARM_THM_JUMP11	Strong2
+
+0+012 <Strong2>:
+  12:	f7ff bffe 	b\.w	0 <Strong1>
+			12: R_ARM_THM_JUMP24	Strong1
+  16:	f7ff bffe 	b\.w	0 <Strong1>
+			16: R_ARM_THM_JUMP24	Strong1
+  1a:	e7fe      	b\.n	0 <Strong1>
+			1a: R_ARM_THM_JUMP11	Strong1
+  1c:	e7fe      	b\.n	0 <Strong1>
+			1c: R_ARM_THM_JUMP11	Strong1
+  1e:	f7ff bffe 	b\.w	0 <Strong1>
+			1e: R_ARM_THM_JUMP24	Strong1
+  22:	e7fe      	b\.n	0 <Strong1>
+			22: R_ARM_THM_JUMP11	Strong1
diff --git a/gas/testsuite/gas/arm/plt-1.s b/gas/testsuite/gas/arm/plt-1.s
new file mode 100644
index 0000000000..262980a9f3
--- /dev/null
+++ b/gas/testsuite/gas/arm/plt-1.s
@@ -0,0 +1,27 @@
+	.syntax unified
+	.text
+	.thumb
+
+	.globl	Strong1
+	.thumb_func
+	.type	Strong1, %function
+Strong1:
+	b	Strong2(PLT)
+	b.w	Strong2(PLT)
+	b.n	Strong2(PLT)
+	b	Strong2
+	b.w	Strong2
+	b.n	Strong2
+	.size	Strong1,.-Strong1
+
+	.globl	Strong2
+	.thumb_func
+	.type	Strong2, %function
+Strong2:
+	b	Strong1(PLT)
+	b.w	Strong1(PLT)
+	b.n	Strong1(PLT)
+	b	Strong1
+	b.w	Strong1
+	b.n	Strong1
+	.size	Strong2, .-Strong2
-- 
2.11.0