PowerPC add initial -mfuture instruction support

This patch adds initial 64-bit insn assembler/disassembler support.
The only instruction added is "pnop" along with the automatic aligning
of prefix instruction so they do not cross 64-byte boundaries.

include/
	* dis-asm.h (WIDE_OUTPUT): Define.
	* opcode/ppc.h (prefix_opcodes, prefix_num_opcodes): Declare.
	(PPC_OPCODE_POWERXX, PPC_GET_PREFIX, PPC_GET_SUFFIX),
	(PPC_PREFIX_P, PPC_PREFIX_SEG): Define.
opcodes/
	* ppc-dis.c (ppc_opts): Add "future" entry.
	(PREFIX_OPCD_SEGS): Define.
	(prefix_opcd_indices): New array.
	(disassemble_init_powerpc): Initialize prefix_opcd_indices.
	(lookup_prefix): New function.
	(print_insn_powerpc): Handle 64-bit prefix instructions.
	* ppc-opc.c (PREFIX_OP, PREFIX_FORM, SUFFIX_MASK, PREFIX_MASK),
	(PMRR, POWERXX): Define.
	(prefix_opcodes): New instruction table.
	(prefix_num_opcodes): New constant.
binutils/
	* objdump.c (disassemble_bytes): Set WIDE_OUTPUT in flags.
gas/
	* config/tc-ppc.c (ppc_setup_opcodes): Handle prefix_opcodes.
	(struct insn_label_list): New.
	(insn_labels, free_insn_labels): New variables.
	(ppc_record_label, ppc_clear_labels, ppc_start_line_hook): New funcs.
	(ppc_frob_label, ppc_new_dot_label): Move functions earlier in file
	and call ppc_record_label.
	(md_assemble): Handle 64-bit prefix instructions.  Align labels
	that are on the same line as a prefix instruction.
	* config/tc-ppc.h (tc_frob_label, ppc_frob_label): Move to
	later in the file.
	(md_start_line_hook): Define.
	(ppc_start_line_hook): Declare.
	* testsuite/gas/ppc/prefix-align.d,
	* testsuite/gas/ppc/prefix-align.s: New test.
	* testsuite/gas/ppc/ppc.exp: Run new test.

1 files changed, 24 insertions, 0 deletions

diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c
index 394a997..7dc2d77 100644
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -2721,6 +2721,18 @@ const unsigned int num_powerpc_operands = (sizeof (powerpc_operands)
 #define OP(x) ((((uint64_t)(x)) & 0x3f) << 26)
 #define OP_MASK OP (0x3f)
 
+/* The prefix opcode.  */
+#define PREFIX_OP (1ULL << 58)
+
+/* The 2-bit prefix form.  */
+#define PREFIX_FORM(x) ((x & 3ULL) << 56)
+
+#define SUFFIX_MASK ((1ULL << 32) - 1)
+#define PREFIX_MASK (SUFFIX_MASK << 32)
+
+/* Prefix insn, modified register to register form MRR.  */
+#define PMRR (PREFIX_OP | PREFIX_FORM (3))
+
 /* The main opcode combined with a trap code in the TO field of a D
    form instruction.  Used for extended mnemonics for the trap
    instructions.  */
@@ -3547,6 +3559,7 @@ const unsigned int num_powerpc_operands = (sizeof (powerpc_operands)
 #define POWER7	PPC_OPCODE_POWER7
 #define POWER8	PPC_OPCODE_POWER8
 #define POWER9	PPC_OPCODE_POWER9
+#define POWERXX PPC_OPCODE_POWERXX
 #define CELL	PPC_OPCODE_CELL
 #define PPC64	PPC_OPCODE_64 | PPC_OPCODE_64_BRIDGE
 #define NON32	(PPC_OPCODE_64 | PPC_OPCODE_POWER4	\
@@ -7796,6 +7809,17 @@ const struct powerpc_opcode powerpc_opcodes[] = {
 const unsigned int powerpc_num_opcodes =
   sizeof (powerpc_opcodes) / sizeof (powerpc_opcodes[0]);
 
+/* The opcode table for 8-byte prefix instructions.
+
+   The format of this opcode table is the same as the main opcode table.  */
+
+const struct powerpc_opcode prefix_opcodes[] = {
+{"pnop",	  PMRR,		       PREFIX_MASK,	POWERXX, 0,	{0}},
+};
+
+const unsigned int prefix_num_opcodes =
+  sizeof (prefix_opcodes) / sizeof (prefix_opcodes[0]);
+
 /* The VLE opcode table.
 
    The format of this opcode table is the same as the main opcode table.  */