[RFA/ARM 08/21] Add support for SEVL

[Matthew Gretton-Dann <matthew dot gretton-dann at arm dot com>]

ARMv8 adds the SEVL instruction to A32 and T32.

This patch adds support for it.

gas/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/tc-arm.c (T16_32_TAB): Add _sevl.
	(insns): Add SEVL.

gas/testsuite/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gas/arm/armv8-a.s: New testcase.
	* gas/arm/armv8-a.d: Likewise.

opcodes/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* arm-dis.c (arm_opcodes): Add SEVL.
	(thumb_opcodes): Likewise.
	(thumb32_opcodes): Likewise.

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index d3838ab..cfcdecb 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -9549,7 +9549,8 @@ encode_thumb32_addr_mode (int i, bfd_boolean is_t, bfd_boolean is_d)
   X(_yield, bf10, f3af8001),			\
   X(_wfe,   bf20, f3af8002),			\
   X(_wfi,   bf30, f3af8003),			\
-  X(_sev,   bf40, f3af8004),
+  X(_sev,   bf40, f3af8004),                    \
+  X(_sevl,  bf50, f3af8005)
 
 /* To catch errors in encoding functions, the codes are all offset by
    0xF800, putting them in one of the 32-bit prefix ranges, ergo undefined
@@ -17966,8 +17967,18 @@ static const struct asm_opcode insns[] =
 
  TUF("pldw",	410f000, f830f000, 1, (ADDR),	pld,	t_pld),
 
+ /* AArchv8 instructions.  */
+#undef  ARM_VARIANT
+#define ARM_VARIANT   & arm_ext_v8
+#undef  THUMB_VARIANT
+#define THUMB_VARIANT & arm_ext_v8
+
+ tCE("sevl",	320f005, _sevl,    0, (),		noargs,	t_hint),
+
 #undef  ARM_VARIANT
 #define ARM_VARIANT  & fpu_fpa_ext_v1  /* Core FPA instruction set (V1).  */
+#undef  THUMB_VARIANT
+#define THUMB_VARIANT NULL
 
  cCE("wfs",	e200110, 1, (RR),	     rd),
  cCE("rfs",	e300110, 1, (RR),	     rd),
diff --git a/gas/testsuite/gas/arm/armv8-a.d b/gas/testsuite/gas/arm/armv8-a.d
new file mode 100644
index 0000000..f558910
--- /dev/null
+++ b/gas/testsuite/gas/arm/armv8-a.d
@@ -0,0 +1,10 @@
+#name: Valid v8-a
+#objdump: -dr --prefix-addresses --show-raw-insn
+
+.*: +file format .*arm.*
+
+Disassembly of section .text:
+0[0-9a-f]+ <[^>]+> e320f005 	sevl
+0[0-9a-f]+ <[^>]+> bf50      	sevl
+0[0-9a-f]+ <[^>]+> bf50      	sevl
+0[0-9a-f]+ <[^>]+> f3af 8005 	sevl.w
diff --git a/gas/testsuite/gas/arm/armv8-a.s b/gas/testsuite/gas/arm/armv8-a.s
new file mode 100644
index 0000000..000a5a7
--- /dev/null
+++ b/gas/testsuite/gas/arm/armv8-a.s
@@ -0,0 +1,14 @@
+	.syntax unified
+	.text
+	.arch armv8-a
+
+	.arm
+foo:
+	sevl
+
+	.thumb
+	.thumb_func
+bar:
+	sevl
+	sevl.n
+	sevl.w
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index ccbb6b3..5a450d7 100644
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -849,6 +849,9 @@ static const struct opcode32 arm_opcodes[] =
   {ARM_EXT_V3M, 0x00800090, 0x0fa000f0, "%22?sumull%20's%c\t%12-15Ru, %16-19Ru, %0-3R, %8-11R"},
   {ARM_EXT_V3M, 0x00a00090, 0x0fa000f0, "%22?sumlal%20's%c\t%12-15Ru, %16-19Ru, %0-3R, %8-11R"},
 
+  /* V8 instructions.  */
+  {ARM_EXT_V8,   0x0320f005, 0x0fffffff, "sevl"},
+
   /* Virtualization Extension instructions.  */
   {ARM_EXT_VIRT, 0x0160006e, 0x0fffffff, "eret%c"},
   {ARM_EXT_VIRT, 0x01400070, 0x0ff000f0, "hvc%c\t%e"},
@@ -1244,6 +1247,9 @@ static const struct opcode16 thumb_opcodes[] =
 {
   /* Thumb instructions.  */
 
+  /* ARM V8 instructions.  */
+  {ARM_EXT_V8,  0xbf50, 0xffff, "sevl%c"},
+
   /* ARM V6K no-argument instructions.  */
   {ARM_EXT_V6K, 0xbf00, 0xffff, "nop%c"},
   {ARM_EXT_V6K, 0xbf10, 0xffff, "yield%c"},
@@ -1413,6 +1419,9 @@ static const struct opcode16 thumb_opcodes[] =
    makes heavy use of special-case bit patterns.  */
 static const struct opcode32 thumb32_opcodes[] =
 {
+  /* V8 instructions.  */
+  {ARM_EXT_V8, 0xf3af8005, 0xffffffff, "sevl%c.w"},
+
   /* V7 instructions.  */
   {ARM_EXT_V7, 0xf910f000, 0xff70f000, "pli%c\t%a"},
   {ARM_EXT_V7, 0xf3af80f0, 0xfffffff0, "dbg%c\t#%0-3d"},