From: Yao Qi <yao.qi@linaro.org>
Date: Tue, 30 Jun 2015 08:24:43 +0000 (+0100)
Subject: Handle media instructions in arm software single step.
X-Git-Tag: gdb-7.10-release~144
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7b9be803fed8f500b512d5685773c84fffcdf63f;p=external%2Fbinutils.git

Handle media instructions in arm software single step.

This patch fixes PR 18605 which is about incorrectly decoding media
instructions in software single step.

gdb:

2015-06-30  Yao Qi  <yao.qi@linaro.org>

	PR tdep/18605
	* arm-tdep.c (arm_get_next_pc_raw): Break for media
	instructions.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 74a88db..8a961c6 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2015-06-30  Yao Qi  <yao.qi@linaro.org>
+
+	PR tdep/18605
+	* arm-tdep.c (arm_get_next_pc_raw): Break for media
+	instructions.
+
 2015-06-29  Kevin Buettner  <kevinb@redhat.com>
 
         * rx-tdep.c (RX_PSW_REGNUM): New enum constant.
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index c99f2a9..527bd01 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -4927,6 +4927,13 @@ arm_get_next_pc_raw (struct frame_info *frame, CORE_ADDR pc)
 	case 0x5:		/* data transfer */
 	case 0x6:
 	case 0x7:
+	  if (bits (this_instr, 25, 27) == 0x3 && bit (this_instr, 4) == 1)
+	    {
+	      /* Media instructions and architecturally undefined
+		 instructions.  */
+	      break;
+	    }
+
 	  if (bit (this_instr, 20))
 	    {
 	      /* load */