From: Ulrich Weigand <uweigand@de.ibm.com>
Date: Tue, 19 Oct 2010 21:30:54 +0000 (+0000)
Subject: 	* arm-tdep.c (thumb_get_next_pc_raw): Handle Thumb-16 encoding
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ad8b5167d76f8e4883d6ac138c27994cfed77b99;p=binutils-gdb.git

	* arm-tdep.c (thumb_get_next_pc_raw): Handle Thumb-16 encoding
	for "mov pc, REG" as well.
	(thumb_instruction_changes_pc): Likewise.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 13336bad5e8..5242f6140ce 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2010-10-19  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* arm-tdep.c (thumb_get_next_pc_raw): Handle Thumb-16 encoding
+	for "mov pc, REG" as well.
+	(thumb_instruction_changes_pc): Likewise.
+
 2010-10-19  Sami Wagiaalla  <swagiaal@redhat.com>
 
 	 PR C++/11500:
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 5b32b8a47ca..2df96cd0e62 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -537,6 +537,9 @@ thumb_instruction_changes_pc (unsigned short inst)
   if ((inst & 0xff00) == 0x4700)	/* bx REG, blx REG */
     return 1;
 
+  if ((inst & 0xff87) == 0x4687)	/* mov pc, REG */
+    return 1;
+
   if ((inst & 0xf500) == 0xb100)	/* CBNZ or CBZ.  */
     return 1;
 
@@ -3572,6 +3575,15 @@ thumb_get_next_pc_raw (struct frame_info *frame, CORE_ADDR pc, int insert_bkpt)
       else
 	nextpc = get_frame_register_unsigned (frame, bits (inst1, 3, 6));
     }
+  else if ((inst1 & 0xff87) == 0x4687)	/* mov pc, REG */
+    {
+      if (bits (inst1, 3, 6) == 0x0f)
+	nextpc = pc_val;
+      else
+	nextpc = get_frame_register_unsigned (frame, bits (inst1, 3, 6));
+
+      nextpc = MAKE_THUMB_ADDR (nextpc);
+    }
   else if ((inst1 & 0xf500) == 0xb100)
     {
       /* CBNZ or CBZ.  */