Apply Paul Brook's patch to implement armv6k instructions

16 files changed, 232 insertions, 14 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 1d96352..231242b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2004-09-30  Paul Brook  <paul@codesourcery.com>
+
+	* reloc.c: Add BFD_RELOC_ARM_SMI.
+	* bfd-in2.h: Regenerate.
+	* libbfd.h: Ditto.
+
 2004-09-24  Alan Modra  <amodra@bigpond.net.au>
 
 	* dwarf2.c (_bfd_dwarf2_find_nearest_line): Add output section
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 4be38cf..6feb83e 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -2618,6 +2618,7 @@ field in the instruction.  */
   BFD_RELOC_ARM_ADRL_IMMEDIATE,
   BFD_RELOC_ARM_OFFSET_IMM,
   BFD_RELOC_ARM_SHIFT_IMM,
+  BFD_RELOC_ARM_SMI,
   BFD_RELOC_ARM_SWI,
   BFD_RELOC_ARM_MULTI,
   BFD_RELOC_ARM_CP_OFF_IMM,
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index abe6a2a..c079a6a 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -1111,6 +1111,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
   "BFD_RELOC_ARM_ADRL_IMMEDIATE",
   "BFD_RELOC_ARM_OFFSET_IMM",
   "BFD_RELOC_ARM_SHIFT_IMM",
+  "BFD_RELOC_ARM_SMI",
   "BFD_RELOC_ARM_SWI",
   "BFD_RELOC_ARM_MULTI",
   "BFD_RELOC_ARM_CP_OFF_IMM",
diff --git a/bfd/reloc.c b/bfd/reloc.c
index 8356b60..0069841 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -2560,6 +2560,8 @@ ENUMX
 ENUMX
   BFD_RELOC_ARM_SHIFT_IMM
 ENUMX
+  BFD_RELOC_ARM_SMI
+ENUMX
   BFD_RELOC_ARM_SWI
 ENUMX
   BFD_RELOC_ARM_MULTI
diff --git a/gas/ChangeLog b/gas/ChangeLog
index 5ee17b6..66b267a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,13 @@
+2004-09-30  Paul Brook  <paul@codesourcery.com>
+
+	* config/tc-arm.c (do_smi, do_nop): New functions.
+	(insns): Add ARMv6ZK instructions.
+	(md_apply_fix3): Handle BFD_RELOC_ARM_SMI.
+	(tc_gen_reloc): Ditto.
+	(arm_cpus): Add mpcore and arm1176.
+	(arm_archs): Add armv6{k,z,zk}.
+	* doc/c-arm.texi: Document new cores and architectures.
+
 2004-09-30  Nick Clifton  <nickc@redhat.com>
 
 	* config/tc-arm.c: Use ISO C90 formatting.
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index d9c873a..752cd3c 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -2500,6 +2500,41 @@ cp_byte_address_required_here (char ** str)
 }
 
 static void
+do_nop (char * str)
+{
+  skip_whitespace (str);
+  if (*str == '{')
+    {
+      str++;
+
+      if (my_get_expression (&inst.reloc.exp, &str))
+	inst.reloc.exp.X_op = O_illegal;
+      else
+	{
+	  skip_whitespace (str);
+	  if (*str == '}')
+	    str++;
+	  else
+	    inst.reloc.exp.X_op = O_illegal;
+	}
+
+      if (inst.reloc.exp.X_op != O_constant
+	  || inst.reloc.exp.X_add_number > 255
+	  || inst.reloc.exp.X_add_number < 0)
+	{
+	  inst.error = _("Invalid NOP hint");
+	  return;
+	}
+
+      /* Arcitectural NOP hints are CPSR sets with no bits selected.  */
+      inst.instruction &= 0xf0000000;
+      inst.instruction |= 0x0320f000 + inst.reloc.exp.X_add_number;
+    }
+
+  end_of_line (str);
+}
+
+static void
 do_empty (char * str)
 {
   /* Do nothing really.  */
@@ -4316,7 +4351,7 @@ do_pkhtb (char * str)
 }
 
 /* ARM V6 Load Register Exclusive instruction (argument parse).
-   LDREX{<cond>} <Rd, [<Rn>]
+   LDREX{,B,D,H}{<cond>} <Rd, [<Rn>]
    Condition defaults to COND_ALWAYS.
    Error if Rd or Rn are R15.
    See ARMARMv6 A4.1.27: LDREX.  */
@@ -6635,6 +6670,23 @@ do_ldmstm (char * str)
 }
 
 static void
+do_smi (char * str)
+{
+  skip_whitespace (str);
+
+  /* Allow optional leading '#'.  */
+  if (is_immediate_prefix (*str))
+    str++;
+
+  if (my_get_expression (& inst.reloc.exp, & str))
+    return;
+
+  inst.reloc.type = BFD_RELOC_ARM_SMI;
+  inst.reloc.pc_rel = 0;
+  end_of_line (str);
+}
+
+static void
 do_swi (char * str)
 {
   skip_whitespace (str);
@@ -9791,7 +9843,7 @@ static const struct asm_opcode insns[] =
   /* Pseudo ops.  */
   {"adr",        0xe28f0000, 3,  ARM_EXT_V1,       do_adr},
   {"adrl",       0xe28f0000, 3,  ARM_EXT_V1,       do_adrl},
-  {"nop",        0xe1a00000, 3,  ARM_EXT_V1,       do_empty},
+  {"nop",        0xe1a00000, 3,  ARM_EXT_V1,       do_nop},
 
   /* ARM 2 multiplies.  */
   {"mul",        0xe0000090, 3,  ARM_EXT_V2,       do_mul},
@@ -9993,6 +10045,22 @@ static const struct asm_opcode insns[] =
   { "usat",      0xe6e00010, 4,  ARM_EXT_V6,       do_usat},
   { "usat16",    0xe6e00f30, 6,  ARM_EXT_V6,       do_usat16},
 
+  /*  ARM V6K.  */
+  { "clrex",     0xf57ff01f, 0,  ARM_EXT_V6K,      do_empty},
+  { "ldrexb",    0xe1d00f9f, 6,  ARM_EXT_V6K,      do_ldrex},
+  { "ldrexd",    0xe1b00f9f, 6,  ARM_EXT_V6K,      do_ldrex},
+  { "ldrexh",    0xe1f00f9f, 6,  ARM_EXT_V6K,      do_ldrex},
+  { "sev",       0xe320f004, 3,  ARM_EXT_V6K,      do_empty},
+  { "strexb",    0xe1c00f90, 6,  ARM_EXT_V6K,      do_strex},
+  { "strexd",    0xe1a00f90, 6,  ARM_EXT_V6K,      do_strex},
+  { "strexh",    0xe1e00f90, 6,  ARM_EXT_V6K,      do_strex},
+  { "wfe",       0xe320f002, 3,  ARM_EXT_V6K,      do_empty},
+  { "wfi",       0xe320f003, 3,  ARM_EXT_V6K,      do_empty},
+  { "yield",     0xe320f001, 5,  ARM_EXT_V6K,      do_empty},
+  
+  /*  ARM V6Z.  */
+  { "smi",       0xe1600070, 3,  ARM_EXT_V6Z,      do_smi},
+
   /* Core FPA instruction set (V1).  */
   {"wfs",        0xee200110, 3,  FPU_FPA_EXT_V1,   do_fpa_ctrl},
   {"rfs",        0xee300110, 3,  FPU_FPA_EXT_V1,   do_fpa_ctrl},
@@ -11650,6 +11718,15 @@ md_apply_fix3 (fixS *   fixP,
       md_number_to_chars (buf, newval, INSN_SIZE);
       break;
 
+    case BFD_RELOC_ARM_SMI:
+      if (((unsigned long) value) > 0xffff)
+	as_bad_where (fixP->fx_file, fixP->fx_line,
+		      _("invalid smi expression"));
+      newval = md_chars_to_number (buf, INSN_SIZE) & 0xfff000f0;
+      newval |= (value & 0xf) | ((value & 0xfff0) << 4);
+      md_number_to_chars (buf, newval, INSN_SIZE);
+      break;
+
     case BFD_RELOC_ARM_SWI:
       if (arm_data->thumb_mode)
 	{
@@ -12204,6 +12281,7 @@ tc_gen_reloc (asection * section ATTRIBUTE_UNUSED,
 	  {
 	  case BFD_RELOC_ARM_OFFSET_IMM8:  type = "OFFSET_IMM8";  break;
 	  case BFD_RELOC_ARM_SHIFT_IMM:    type = "SHIFT_IMM";    break;
+	  case BFD_RELOC_ARM_SMI:          type = "SMI";          break;
 	  case BFD_RELOC_ARM_SWI:          type = "SWI";          break;
 	  case BFD_RELOC_ARM_MULTI:        type = "MULTI";        break;
 	  case BFD_RELOC_ARM_CP_OFF_IMM:   type = "CP_OFF_IMM";   break;
@@ -12740,6 +12818,10 @@ static struct arm_cpu_option_table arm_cpus[] =
   {"arm1136j-s",	ARM_ARCH_V6,     FPU_NONE},
   {"arm1136jfs",	ARM_ARCH_V6,     FPU_ARCH_VFP_V2},
   {"arm1136jf-s",	ARM_ARCH_V6,     FPU_ARCH_VFP_V2},
+  {"mpcore",		ARM_ARCH_V6K,    FPU_ARCH_VFP_V2},
+  {"mpcorenovfp",	ARM_ARCH_V6K,    FPU_NONE},
+  {"arm1176jz-s",	ARM_ARCH_V6ZK,   FPU_NONE},
+  {"arm1176jzf-s",	ARM_ARCH_V6ZK,   FPU_ARCH_VFP_V2},
   /* ??? XSCALE is really an architecture.  */
   {"xscale",		ARM_ARCH_XSCALE, FPU_ARCH_VFP_V2},
   /* ??? iwmmxt is not a processor.  */
@@ -12780,6 +12862,9 @@ static struct arm_arch_option_table arm_archs[] =
   {"armv5tej",		ARM_ARCH_V5TEJ,  FPU_ARCH_VFP},
   {"armv6",             ARM_ARCH_V6,     FPU_ARCH_VFP},
   {"armv6j",            ARM_ARCH_V6,     FPU_ARCH_VFP},
+  {"armv6k",            ARM_ARCH_V6K,    FPU_ARCH_VFP},
+  {"armv6z",            ARM_ARCH_V6Z,    FPU_ARCH_VFP},
+  {"armv6zk",           ARM_ARCH_V6ZK,   FPU_ARCH_VFP},
   {"xscale",		ARM_ARCH_XSCALE, FPU_ARCH_VFP},
   {"iwmmxt",		ARM_ARCH_IWMMXT, FPU_ARCH_VFP},
   {NULL, 0, 0}
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index d8027d2..cb4569b 100644
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -1,4 +1,4 @@
-@c Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003
+@c Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004
 @c Free Software Foundation, Inc.
 @c This is part of the GAS manual.
 @c For copying conditions, see the file as.texinfo.
@@ -96,6 +96,10 @@ recognized:
 @code{arm1026ej-s},
 @code{arm1136j-s},
 @code{arm1136jf-s},
+@code{arm1176jz-s},
+@code{arm1176jzf-s},
+@code{mpcore},
+@code{mpcorenovfp},
 @code{ep9312} (ARM920 with Cirrus Maverick coprocessor),
 @code{i80200} (Intel XScale processor)
 @code{iwmmxt} (Intel(r) XScale processor with Wireless MMX(tm) technology coprocessor)
@@ -137,6 +141,9 @@ names are recognized:
 @code{armv5texp},
 @code{armv6},
 @code{armv6j},
+@code{armv6k},
+@code{armv6z},
+@code{armv6zk},
 @code{iwmmxt}
 and
 @code{xscale}.
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index a99939c..e7cd66c 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2004-09-30  Paul Brook  <paul@codesourcery.com>
+
+	* gas/arm/arch6zk.d: New file.
+	* gas/arm/arch6zk.s: New file.
+	* gas/arm/arm.exp: Add them.
+
 2004-09-29  Alan Modra  <amodra@bigpond.net.au>
 
 	* gas/i386/secrel.s: Pad .rdata out to 16 byte boundary.
diff --git a/gas/testsuite/gas/arm/arch6zk.d b/gas/testsuite/gas/arm/arch6zk.d
new file mode 100644
index 0000000..318e312
--- /dev/null
+++ b/gas/testsuite/gas/arm/arch6zk.d
@@ -0,0 +1,28 @@
+#name: ARM V6 instructions
+#as: -march=armv6zk
+#objdump: -dr --prefix-addresses --show-raw-insn
+
+.*: +file format .*arm.*
+
+Disassembly of section .text:
+0+000 <[^>]*> f57ff01f ?	clrex
+0+004 <[^>]*> e1dc3f9f ?	ldrexb	r3, \[ip\]
+0+008 <[^>]*> 11d3cf9f ?	ldrexbne	ip, \[r3\]
+0+00c <[^>]*> e1bc3f9f ?	ldrexd	r3, \[ip\]
+0+010 <[^>]*> 11b3cf9f ?	ldrexdne	ip, \[r3\]
+0+014 <[^>]*> e1fc3f9f ?	ldrexh	r3, \[ip\]
+0+018 <[^>]*> 11f3cf9f ?	ldrexhne	ip, \[r3\]
+0+01c <[^>]*> e320f080 ?	nop	\{128\}
+0+020 <[^>]*> 1320f07f ?	nopne	\{127\}
+0+024 <[^>]*> e320f004 ?	sev
+0+028 <[^>]*> e1c73f9c ?	strexb	r3, ip, \[r7\]
+0+02c <[^>]*> 11c8cf93 ?	strexbne	ip, r3, \[r8\]
+0+030 <[^>]*> e1a73f9c ?	strexd	r3, ip, \[r7\]
+0+034 <[^>]*> 11a8cf93 ?	strexdne	ip, r3, \[r8\]
+0+038 <[^>]*> e1e73f9c ?	strexh	r3, ip, \[r7\]
+0+03c <[^>]*> 11e8cf93 ?	strexhne	ip, r3, \[r8\]
+0+040 <[^>]*> e320f002 ?	wfe
+0+044 <[^>]*> e320f003 ?	wfi
+0+048 <[^>]*> e320f001 ?	yield
+0+04c <[^>]*> e16ec371 ?	smi	60465
+0+050 <[^>]*> 11613c7e ?	smine	5070
diff --git a/gas/testsuite/gas/arm/arch6zk.s b/gas/testsuite/gas/arm/arch6zk.s
new file mode 100644
index 0000000..cf769be
--- /dev/null
+++ b/gas/testsuite/gas/arm/arch6zk.s
@@ -0,0 +1,27 @@
+.text
+.align 0
+
+label:
+	# ARMV6K instructions
+	clrex
+	ldrexb r3, [r12]
+	ldrexbne r12, [r3]
+	ldrexd r3, [r12]
+	ldrexdne r12, [r3]
+	ldrexh r3, [r12]
+	ldrexhne r12, [r3]
+	nop {128}
+	nopne {127}
+	sev
+	strexb r3, r12, [r7]
+	strexbne r12, r3, [r8]
+	strexd r3, r12, [r7]
+	strexdne r12, r3, [r8]
+	strexh r3, r12, [r7]
+	strexhne r12, r3, [r8]
+	wfe
+	wfi
+	yield
+	# ARMV6Z instructions
+	smi 0xec31
+	smine 0x13ce
diff --git a/gas/testsuite/gas/arm/arm.exp b/gas/testsuite/gas/arm/arm.exp
index 16361d9..732468a 100644
--- a/gas/testsuite/gas/arm/arm.exp
+++ b/gas/testsuite/gas/arm/arm.exp
@@ -50,6 +50,7 @@ if {[istarget *arm*-*-*] || [istarget "xscale-*-*"]} then {
     run_dump_test "maverick"    
     run_dump_test "archv6"
     run_dump_test "thumbv6"
+    run_dump_test "arch6zk"
     
     run_errors_test "vfp-bad" "-mfpu=vfp" "VFP errors"
     run_errors_test "req" "-mcpu=arm7m" ".req errors"
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 462165c..6d75eee 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-30  Paul Brook  <paul@codesourcery.com>
+
+	* arm.h (ARM_EXT_V6K, ARM_EXT_V6Z): Define.
+	(ARM_ARCH_V6K, ARM_ARCH_V6Z, ARM_ARCH_V6ZK): Define.
+
 2004-09-11  Theodore A. Roth  <troth@openavr.org>
 
 	* avr.h: Add support for
diff --git a/include/opcode/arm.h b/include/opcode/arm.h
index 6ccccbd..dd90e2a 100644
--- a/include/opcode/arm.h
+++ b/include/opcode/arm.h
@@ -32,6 +32,8 @@
 #define ARM_EXT_V5E	 0x00000400	/* DSP Double transfers.   */
 #define ARM_EXT_V5J	 0x00000800	/* Jazelle extension.	   */
 #define ARM_EXT_V6       0x00001000     /* ARM V6.                 */
+#define ARM_EXT_V6K      0x00002000     /* ARM V6K.                */
+#define ARM_EXT_V6Z      0x00004000     /* ARM V6Z.                */
 
 /* Co-processor space extensions.  */
 #define ARM_CEXT_XSCALE   0x00800000	/* Allow MIA etc.          */
@@ -60,6 +62,9 @@
 #define ARM_ARCH_V5TE	(ARM_ARCH_V5TExP | ARM_EXT_V5E)
 #define ARM_ARCH_V5TEJ	(ARM_ARCH_V5TE	| ARM_EXT_V5J)
 #define ARM_ARCH_V6     (ARM_ARCH_V5TEJ | ARM_EXT_V6)
+#define ARM_ARCH_V6K    (ARM_ARCH_V6    | ARM_EXT_V6K)
+#define ARM_ARCH_V6Z    (ARM_ARCH_V6    | ARM_EXT_V6Z)
+#define ARM_ARCH_V6ZK   (ARM_ARCH_V6    | ARM_EXT_V6K | ARM_EXT_V6Z)
 
 /* Processors with specific extensions in the co-processor space.  */
 #define ARM_ARCH_XSCALE	(ARM_ARCH_V5TE	| ARM_CEXT_XSCALE)
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index f4eebbb..cf49121 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-30  Paul Brook  <paul@codesourcery.com>
+
+	* arm-dis.c (print_insn_arm): Handle 'e' for SMI instruction.
+	* arm-opc.h: Document %e.  Add ARMv6ZK instructions.
+
 2004-09-17  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* Makefile.am (AUTOMAKE_OPTIONS): Require 1.9.
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index e918daf..44cdeac 100644
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -1,5 +1,5 @@
 /* Instruction printing code for the ARM
-   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
    Free Software Foundation, Inc.
    Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
    Modification by James G. Smith (jsmith@cygnus.co.uk)
@@ -900,6 +900,15 @@ print_insn_arm (pc, info, given)
 			}
 			break;
 
+		      case 'e':
+			{
+			  int imm;
+
+			  imm = (given & 0xf) | ((given & 0xfff00) >> 4);
+			  func (stream, "%d", imm);
+			}
+			break;
+
 		      default:
 			abort ();
 		      }
diff --git a/opcodes/arm-opc.h b/opcodes/arm-opc.h
index 4b52f13..531f4587a 100644
--- a/opcodes/arm-opc.h
+++ b/opcodes/arm-opc.h
@@ -1,6 +1,6 @@
 /* Opcode table for the ARM.
 
-   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2003
+   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004
    Free Software Foundation, Inc.
    
    This program is free software; you can redistribute it and/or modify
@@ -18,18 +18,19 @@
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 
-struct arm_opcode {
-    unsigned long value, mask;	/* recognise instruction if (op&mask)==value */
-    char *assembler;		/* how to disassemble this instruction */
+struct arm_opcode
+{
+  unsigned long value, mask;	/* Recognise instruction if (op&mask)==value.  */
+  char *assembler;		/* How to disassemble this instruction.  */
 };
 
 struct thumb_opcode
 {
-    unsigned short value, mask;	/* recognise instruction if (op&mask)==value */
-    char * assembler;		/* how to disassemble this instruction */
+  unsigned short value, mask;	/* Recognise instruction if (op&mask)==value.  */
+  char * assembler;		/* How to disassemble this instruction.  */
 };
 
-/* format of the assembler string :
+/* Format of the assembler string :
    
    %%			%
    %<bitfield>d		print the bitfield in decimal
@@ -82,10 +83,10 @@ Thumb specific format options:
    %<bitfield>W         print (bitfield * 4) as a decimal
    %<bitfield>H         print (bitfield * 2) as a decimal
    %<bitfield>a         print (bitfield * 4) as a pc-rel offset + decoded symbol
-*/
+   %e                   print arm SMI operand (bits 0..7,8..19).  */
 
 /* Note: There is a partial ordering in this table - it must be searched from
-   the top to obtain a correct match. */
+   the top to obtain a correct match.  */
 
 static const struct arm_opcode arm_opcodes[] =
 {
@@ -98,7 +99,26 @@ static const struct arm_opcode arm_opcodes[] =
     {0x00800090, 0x0fa000f0, "%22?sumull%c%20's\t%12-15r, %16-19r, %0-3r, %8-11r"},
     {0x00a00090, 0x0fa000f0, "%22?sumlal%c%20's\t%12-15r, %16-19r, %0-3r, %8-11r"},
 
-    /* ARM V6 instructions. */
+    /* ARM V6Z instructions.  */
+    {0x01600070, 0x0ff000f0, "smi%c\t%e"},
+    
+    /* ARM V6K instructions.  */
+    {0xf57ff01f, 0xffffffff, "clrex"},
+    {0x01d00f9f, 0x0ff00fff, "ldrexb%c\t%12-15r, [%16-19r]"},
+    {0x01b00f9f, 0x0ff00fff, "ldrexd%c\t%12-15r, [%16-19r]"},
+    {0x01f00f9f, 0x0ff00fff, "ldrexh%c\t%12-15r, [%16-19r]"},
+    {0x01c00f90, 0x0ff00ff0, "strexb%c\t%12-15r, %0-3r, [%16-19r]"},
+    {0x01a00f90, 0x0ff00ff0, "strexd%c\t%12-15r, %0-3r, [%16-19r]"},
+    {0x01e00f90, 0x0ff00ff0, "strexh%c\t%12-15r, %0-3r, [%16-19r]"},
+
+    /* ARM V6K NOP hints.  */
+    {0x0320f001, 0x0fffffff, "yield"},
+    {0x0320f002, 0x0fffffff, "wfe"},
+    {0x0320f003, 0x0fffffff, "wfi"},
+    {0x0320f004, 0x0fffffff, "sev"},
+    {0x0320f000, 0x0fffff00, "nop%c\t{%0-7d}"},
+
+    /* ARM V6 instructions.  */
     {0xfc500000, 0xfff00000, "mrrc2\t%8-11d, %4-7d, %12-15r, %16-19r, cr%0-3d"},
     {0xfc400000, 0xfff00000, "mcrr2\t%8-11d, %4-7d, %12-15r, %16-19r, cr%0-3d"},
     {0xf1080000, 0xfffdfe3f, "cpsie\t%8'a%7'i%6'f"},