From e23f1610289a9ba59e77cc214680d38aa7db9e13 Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Wed, 28 Nov 2007 13:04:18 +0000
Subject: [PATCH] * elf-m10300.c (mn10300_elf_relax_section): Extend previous
 fix to cover forward jumps. * ld-mn10300/i135409-5.s: New test case.  Check
 for relaxation to a 16-bit backward jump instruction. *
 ld-mn10300/i135409-5.t: Linker script for the new test. *
 ld-mn10300/i135409-5.d: Expected disassembly of new test. *
 ld-mn10300/mn10300.exp: Run the new test.

---
 bfd/ChangeLog                       |  5 +++++
 bfd/elf-m10300.c                    |  4 ++--
 ld/testsuite/ChangeLog              |  8 ++++++++
 ld/testsuite/ld-mn10300/i135409-5.d |  7 +++++++
 ld/testsuite/ld-mn10300/i135409-5.s |  8 ++++++++
 ld/testsuite/ld-mn10300/i135409-5.t | 23 +++++++++++++++++++++++
 ld/testsuite/ld-mn10300/mn10300.exp | 10 +++++++++-
 7 files changed, 62 insertions(+), 3 deletions(-)
 create mode 100644 ld/testsuite/ld-mn10300/i135409-5.d
 create mode 100644 ld/testsuite/ld-mn10300/i135409-5.s
 create mode 100644 ld/testsuite/ld-mn10300/i135409-5.t

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 8dc7003f3fe..e78868e500e 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2007-11-28  Nick Clifton  <nickc@redhat.com>
+
+	* elf-m10300.c (mn10300_elf_relax_section): Extend previous fix to
+	cover forward jumps.
+
 2007-11-21  Nick Clifton  <nickc@redhat.com>
 
 	* elf-m10300.c (mn10300_elf_relax_section): Allow for alignment
diff --git a/bfd/elf-m10300.c b/bfd/elf-m10300.c
index 2695217f4eb..af2fff3c140 100644
--- a/bfd/elf-m10300.c
+++ b/bfd/elf-m10300.c
@@ -2736,7 +2736,7 @@ mn10300_elf_relax_section (bfd *abfd,
 	  bfd_vma aend = irel->r_offset;
 
 	  aend = BFD_ALIGN (aend, 1 << irel->r_addend);
-	  adj = 2*adj - adj - 1;
+	  adj = 2 * adj - adj - 1;
 
 	  /* Record the biggest adjustmnet.  Skip any alignment at the
 	     end of our section.  */
@@ -2963,7 +2963,7 @@ mn10300_elf_relax_section (bfd *abfd,
 	     able to relax.  */
 	  /* Account for jumps across alignment boundaries using
 	     align_gap_adjustment.  */
-	  if (value < 0x8001 - align_gap_adjustment
+	  if ((bfd_signed_vma) value < 0x8001 - (bfd_signed_vma) align_gap_adjustment
 	      && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
 	    {
 	      unsigned char code;
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index 7e8719ad93a..fc7671ab82e 100644
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2007-11-28  Nick Clifton  <nickc@redhat.com>
+
+	* ld-mn10300/i135409-5.s: New test case.  Check for relaxation to
+	a 16-bit backward jump instruction.
+	* ld-mn10300/i135409-5.t: Linker script for the new test.
+	* ld-mn10300/i135409-5.d: Expected disassembly of new test.
+	* ld-mn10300/mn10300.exp: Run the new test.
+
 2007-11-21  Nick Clifton  <nickc@redhat.com>
 
 	* ld-mn10300/i135409-4.s: New test case.  Check for relaxation to
diff --git a/ld/testsuite/ld-mn10300/i135409-5.d b/ld/testsuite/ld-mn10300/i135409-5.d
new file mode 100644
index 00000000000..dbff7013725
--- /dev/null
+++ b/ld/testsuite/ld-mn10300/i135409-5.d
@@ -0,0 +1,7 @@
+
+tmpdir/i135409-5.x:     file format elf32-.*
+
+Disassembly of section .text:
+
+0+0700 <_start>:
+ 700:[ 	]+cc 00 f9[ 	]+jmp[ 	]+0 \<L001\>
diff --git a/ld/testsuite/ld-mn10300/i135409-5.s b/ld/testsuite/ld-mn10300/i135409-5.s
new file mode 100644
index 00000000000..23897e8bdd6
--- /dev/null
+++ b/ld/testsuite/ld-mn10300/i135409-5.s
@@ -0,0 +1,8 @@
+	.text
+       .global _start
+_start:
+       jmp     L001
+
+       .section        .text1
+L001:
+       nop
diff --git a/ld/testsuite/ld-mn10300/i135409-5.t b/ld/testsuite/ld-mn10300/i135409-5.t
new file mode 100644
index 00000000000..8b42814603d
--- /dev/null
+++ b/ld/testsuite/ld-mn10300/i135409-5.t
@@ -0,0 +1,23 @@
+SECTIONS
+{
+       . = 0x0;
+       .text1 :
+       {
+               *(.text1)
+       }
+
+       . = 0x700;
+       .text :
+       {
+               *(.text)
+       }
+       . = 0x8100;
+       .bss :
+       {
+               *(.bss)
+       }
+       .data :
+       {
+               *(.data)
+       }
+}
diff --git a/ld/testsuite/ld-mn10300/mn10300.exp b/ld/testsuite/ld-mn10300/mn10300.exp
index f67881f75af..edb1470db57 100644
--- a/ld/testsuite/ld-mn10300/mn10300.exp
+++ b/ld/testsuite/ld-mn10300/mn10300.exp
@@ -80,13 +80,21 @@ set mn10300_tests {
 	"i135409-3.x"
     }
     {
-	"adjusting a 16 bit branch"
+	"adjusting a 16-bit forward branch"
 	"-Ti135409-4.t -relax"
 	""
 	{ "i135409-4.s" }
 	{ {objdump -d i135409-4.d} }
 	"i135409-4.x"
     }
+    {
+	"adjusting a 16-bit backward branch"
+	"-Ti135409-5.t -relax"
+	""
+	{ "i135409-5.s" }
+	{ {objdump -d i135409-5.d} }
+	"i135409-5.x"
+    }
 }
 
 run_ld_link_tests $mn10300_tests
-- 
2.30.2