powerpc: Unify opcode definitions and support

Create a new header that becomes a single location for defining PowerPC
opcodes used by code that is either generationg instructions
at runtime (fixups, debug, etc.), emulating instructions, or just
compiling instructions old assemblers don't know about.

We currently don't handle the floating point emulation or alignment decode
as both are better handled by the specific decode support they already
have.

Added support for the new dcbzl, dcbal, msgsnd, tlbilx, & wait instructions
since older assemblers don't know about them.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/ftrace.c

@@ -33,7 +33,7 @@
 #ifdef CONFIG_DYNAMIC_FTRACE
 static unsigned int ftrace_nop_replace(void)
 {
-	return PPC_NOP_INSTR;
+	return PPC_INST_NOP;
 }
 
 static unsigned int
@@ -302,7 +302,7 @@ __ftrace_make_nop(struct module *mod,
 		return -EINVAL;
 	}
 
-	op = PPC_NOP_INSTR;
+	op = PPC_INST_NOP;
 
 	if (probe_kernel_write((void *)ip, &op, MCOUNT_INSN_SIZE))
 		return -EPERM;
@@ -380,7 +380,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 	 *  b +8; ld r2,40(r1)
 	 */
 	if (((op[0] != 0x48000008) || (op[1] != 0xe8410028)) &&
-	    ((op[0] != PPC_NOP_INSTR) || (op[1] != PPC_NOP_INSTR))) {
+	    ((op[0] != PPC_INST_NOP) || (op[1] != PPC_INST_NOP))) {
 		printk(KERN_ERR "Expected NOPs but have %x %x\n", op[0], op[1]);
 		return -EINVAL;
 	}
@@ -423,7 +423,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 		return -EFAULT;
 
 	/* It should be pointing to a nop */
-	if (op != PPC_NOP_INSTR) {
+	if (op != PPC_INST_NOP) {
 		printk(KERN_ERR "Expected NOP but have %x\n", op);
 		return -EINVAL;
 	}