dyn_fpu_dh.h

DOSBox emulates a full x86 pc with sound and dos. Its main use is to run old dosgames on platforms w

				LOG(LOG_FPU,LOG_ERROR)("8087 only fpu code used esc 3: group 4: subfuntion :%d",sub);
				break;
			case 0x02:				//FNCLEX FCLEX
				cache_addb(0xdb);
				cache_addb(decode.modrm.val);
				break;
			case 0x03:				//FNINIT FINIT
				gen_call_function((void*)&FPU_FNINIT_DH,""); 
				cache_addb(0xdb);
				cache_addb(decode.modrm.val);
				break;
			case 0x04:				//FNSETPM
			case 0x05:				//FRSTPM
//				LOG(LOG_FPU,LOG_ERROR)("80267 protected mode (un)set. Nothing done");
				break;
			default:
				E_Exit("ESC 3:ILLEGAL OPCODE group %d subfunction %d",group,sub);
			}
			break;
		default:
			LOG(LOG_FPU,LOG_WARN)("ESC 3:Unhandled group %d subfunction %d",group,sub);
			break;
		}
	} else {
		Bitu group=(decode.modrm.val >> 3) & 7;
		Bitu sub=(decode.modrm.val & 7);
		dyn_fill_ea(); 
		switch(group){
		case 0x00:	/* FILD */
			gen_call_function((void*)&FPU_FLD_32,"%Ddr",DREG(EA));
			cache_addb(0xdb);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x01:	/* FISTTP */
			LOG(LOG_FPU,LOG_WARN)("ESC 3 EA:Unhandled group %d subfunction %d",group,sub);
			break;
		case 0x02:	/* FIST */
			cache_addb(0xdb);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_32,"%Ddr",DREG(EA));
			break;
		case 0x03:	/* FISTP */
			cache_addb(0xdb);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_32,"%Ddr",DREG(EA));
			break;
		case 0x05:	/* FLD 80 Bits Real */
			gen_call_function((void*)&FPU_FLD_80,"%Ddr",DREG(EA));
			cache_addb(0xdb);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x07:	/* FSTP 80 Bits Real */
			cache_addb(0xdb);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_80,"%Ddr",DREG(EA));
			break;
		default:
			LOG(LOG_FPU,LOG_WARN)("ESC 3 EA:Unhandled group %d subfunction %d",group,sub);
		}
	}
}

static void dh_fpu_esc4(){
	dyn_get_modrm();  
	Bitu group=(decode.modrm.val >> 3) & 7;
	Bitu sub=(decode.modrm.val & 7);
	if (decode.modrm.val >= 0xc0) { 
		cache_addb(0xdc);
		cache_addb(decode.modrm.val);
	} else { 
		dyn_fill_ea(); 
		gen_call_function((void*)&FPU_FLD_64,"%Ddr",DREG(EA)); 
		cache_addb(0xdc);
		cache_addb(0x05|(decode.modrm.reg<<3));
		cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
	}
}

static void dh_fpu_esc5(){
	dyn_get_modrm();  
	if (decode.modrm.val >= 0xc0) { 
		cache_addb(0xdd);
		cache_addb(decode.modrm.val);
	} else {
		dyn_fill_ea(); 
		Bitu group=(decode.modrm.val >> 3) & 7;
		Bitu sub=(decode.modrm.val & 7);
		switch(group){
		case 0x00:  /* FLD double real*/
			gen_call_function((void*)&FPU_FLD_64,"%Ddr",DREG(EA));
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x01:  /* FISTTP longint*/
			LOG(LOG_FPU,LOG_WARN)("ESC 5 EA:Unhandled group %d subfunction %d",group,sub);
			break;
		case 0x02:   /* FST double real*/
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_64,"%Ddr",DREG(EA));
			break;
		case 0x03:	/* FSTP double real*/
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_64,"%Ddr",DREG(EA));
			break;
		case 0x04:	/* FRSTOR */
			gen_call_function((void*)&FPU_FRSTOR_DH,"%Ddr",DREG(EA));
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp_state[0])));
			break;
		case 0x06:	/* FSAVE */
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp_state[0])));
			gen_call_function((void*)&FPU_FSAVE_DH,"%Ddr",DREG(EA));
			cache_addb(0xdb);
			cache_addb(0xe3);
			break;
		case 0x07:   /* FNSTSW */
			cache_addb(0xdd);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_16,"%Ddr",DREG(EA));
			break;
		default:
			LOG(LOG_FPU,LOG_WARN)("ESC 5 EA:Unhandled group %d subfunction %d",group,sub);
		}
	}
}

static void dh_fpu_esc6(){
	dyn_get_modrm();  
	Bitu group=(decode.modrm.val >> 3) & 7;
	Bitu sub=(decode.modrm.val & 7);
	if (decode.modrm.val >= 0xc0) { 
		cache_addb(0xde);
		cache_addb(decode.modrm.val);
	} else {
		dyn_fill_ea(); 
		gen_call_function((void*)&FPU_FLD_16,"%Ddr",DREG(EA)); 
		cache_addb(0xde);
		cache_addb(0x05|(decode.modrm.reg<<3));
		cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
	}
}

static void dh_fpu_esc7(){
	dyn_get_modrm();  
	Bitu group=(decode.modrm.val >> 3) & 7;
	Bitu sub=(decode.modrm.val & 7);
	if (decode.modrm.val >= 0xc0) { 
		switch (group){
		case 0x01: /* FXCH STi*/
			cache_addb(0xdf);
			cache_addb(decode.modrm.val);
			break;
		case 0x02:  /* FSTP STi*/
		case 0x03:  /* FSTP STi*/
			cache_addb(0xdf);
			cache_addb(decode.modrm.val);
			break;
		case 0x04:
			switch(sub){
				case 0x00:     /* FNSTSW AX*/
					cache_addb(0xdd);
					cache_addb(0x05|(0x07<<3));
					cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
					gen_load_host(&(dyn_dh_fpu.temp.m1),DREG(TMPB),4);
					gen_dop_word(DOP_MOV,false,DREG(EAX),DREG(TMPB));
					gen_releasereg(DREG(TMPB));
					break;
				default:
					LOG(LOG_FPU,LOG_WARN)("ESC 7:Unhandled group %d subfunction %d",group,sub);
					break;
			}
			break;
		default:
			LOG(LOG_FPU,LOG_WARN)("ESC 7:Unhandled group %d subfunction %d",group,sub);
			break;
		}
	} else {
		dyn_fill_ea(); 
		switch(group){
		case 0x00:  /* FILD Bit16s */
			gen_call_function((void*)&FPU_FLD_16,"%Ddr",DREG(EA));
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x01:
			LOG(LOG_FPU,LOG_WARN)("ESC 7 EA:Unhandled group %d subfunction %d",group,sub);
			break;
		case 0x02:   /* FIST Bit16s */
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_16,"%Ddr",DREG(EA));
			break;
		case 0x03:	/* FISTP Bit16s */
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_16,"%Ddr",DREG(EA));
			break;
		case 0x04:   /* FBLD packed BCD */
			gen_call_function((void*)&FPU_FLD_80,"%Ddr",DREG(EA));
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x05:  /* FILD Bit64s */
			gen_call_function((void*)&FPU_FLD_64,"%Ddr",DREG(EA));
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			break;
		case 0x06:	/* FBSTP packed BCD */
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_80,"%Ddr",DREG(EA));
			break;
		case 0x07:  /* FISTP Bit64s */
			cache_addb(0xdf);
			cache_addb(0x05|(decode.modrm.reg<<3));
			cache_addd((Bit32u)(&(dyn_dh_fpu.temp.m1)));
			gen_call_function((void*)&FPU_FST_64,"%Ddr",DREG(EA));
			break;
		default:
			LOG(LOG_FPU,LOG_WARN)("ESC 7 EA:Unhandled group %d subfunction %d",group,sub);
			break;
		}
	}
}

#endif