Added HLT instruction

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1053

include/cpu.h

@@ -103,7 +103,7 @@ bool CPU_IRET(bool use32);
 bool CPU_SetSegGeneral(SegNames seg,Bitu value);
 
 void CPU_CPUID(void);
-
+void CPU_HLT(void);
 
 //Flag Handling
 Bitu get_CF(void);
@@ -386,6 +386,9 @@ struct CPUBlock {
 	struct {
 		Bitu prefix,entry;
 	} full;
+	struct {
+		Bitu eip,cs;
+	} hlt;
 };
 
 extern CPUBlock cpu;

src/cpu/core_full/load.h

@@ -469,6 +469,10 @@ l_M_Ed:
 	case D_CPUID:
 		CPU_CPUID();
 		goto nextopcode;
+	case D_HLT:
+		SaveIP();
+		CPU_HLT();
+		return 0x0;
 	default:
 		LOG(LOG_CPU,LOG_ERROR)("LOAD:Unhandled code %d opcode %X",inst.code.load,inst.entry);
 		break;

src/cpu/core_full/optable.h

@@ -172,7 +172,7 @@ static OpCode OpCodeTable[1024]={
 /* 0xf0 - 0xf7 */
 {0			,0			,0		,0		},{0		,0			,0		,0		},
 {L_PREREPNE	,0			,0		,0		},{L_PREREP	,0			,0		,0		},
-{0			,0			,0		,0		},{D_CMC	,0			,0		,0		},
+{D_HLT		,0			,0		,0		},{D_CMC	,0			,0		,0		},
 {L_MODRM	,8			,0		,M_GRP	},{L_MODRM	,9			,0		,M_GRP	},
 /* 0xf8 - 0xff */
 {D_CLC		,0			,0		,0		},{D_STC	,0			,0		,0		},

src/cpu/core_full/support.h

@@ -44,6 +44,7 @@ enum {
 	D_RETFw,D_RETFd,
 	D_RETFwIw,D_RETFdIw,
 	D_CPUID,
+	D_HLT,
 };