Remove specialised decoders. This will be done differently, if necessary.

SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp

@@ -191,7 +191,6 @@ void sheepshaver_cpu::init_decoder()
 	static const instr_info_t sheep_ii_table[] = {
 		{ "sheep",
 		  (execute_pmf)&sheepshaver_cpu::execute_sheep,
-		  NULL,
 		  PPC_I(SHEEP),
 		  D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
 		}

SheepShaver/src/kpx_cpu/src/cpu/ppc/ppc-cpu.cpp

@@ -634,7 +634,7 @@ void powerpc_cpu::execute(uint32 entry)
 				}
 #endif
 				di->opcode = opcode;
-				di->execute = ii->decode.ptr() ? ii->decode(this, opcode) : ii->execute;
+				di->execute = ii->execute;
 				di++;
 #if PPC_EXECUTE_DUMP_STATE
 				if (dump_state) {

SheepShaver/src/kpx_cpu/src/cpu/ppc/ppc-cpu.hpp

@@ -189,15 +189,10 @@ protected:
 	typedef void (powerpc_cpu::*execute_pmf)(uint32 opcode);
 	typedef nv_mem_fun1_t< void, powerpc_cpu, uint32 > execute_fn;
 
-	// Specialzed instruction decoders type
-	typedef execute_fn (powerpc_cpu::*decode_pmf)(uint32 opcode);
-	typedef nv_mem_fun1_t< execute_fn, powerpc_cpu, uint32 > decode_fn;
-
 	// Instruction information structure
 	struct instr_info_t {
 		char			name[12];		// Instruction name
 		execute_fn		execute;		// Semantic routine for this instruction
-		decode_fn		decode;			// Specialized instruction decoder
 		uint16			mnemo;			// Mnemonic
 		uint16			format;			// Instruction format (XO-form, D-form, etc.)
 		uint16			opcode;			// Primary opcode