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root/cebix/SheepShaver/src/rom_patches.cpp

Comparing SheepShaver/src/rom_patches.cpp (file contents):
Revision 1.7 by gbeauche, 2003-09-07T14:33:51Z vs.
Revision 1.8 by gbeauche, 2003-09-28T21:27:33Z

#	Line 1079 | Line 1079 | static bool patch_68k_emul(void)
1079		// Extra routine for 68k emulator start
1080		lp = (uint32 *)(ROM_BASE + 0x36f900);
1081		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1082	+	#if EMULATED_PPC
1083	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1084	+	#else
1085		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1086		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1087		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1088	+	#endif
1089		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1090		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1091		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1109 | Line 1113 | static bool patch_68k_emul(void)
1113		// Extra routine for Mixed Mode
1114		lp = (uint32 *)(ROM_BASE + 0x36fa00);
1115		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1116	+	#if EMULATED_PPC
1117	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1118	+	#else
1119		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1120		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1121		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1122	+	#endif
1123		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1124		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1125		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1139 | Line 1147 | static bool patch_68k_emul(void)
1147		// Extra routine for Reset/FC1E opcode
1148		lp = (uint32 *)(ROM_BASE + 0x36fb00);
1149		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1150	+	#if EMULATED_PPC
1151	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1152	+	#else
1153		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1154		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1155		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1156	+	#endif
1157		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1158		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1159		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1169 | Line 1181 | static bool patch_68k_emul(void)
1181		// Extra routine for FE0A opcode (QuickDraw 3D needs this)
1182		lp = (uint32 *)(ROM_BASE + 0x36fc00);
1183		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1184	+	#if EMULATED_PPC
1185	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1186	+	#else
1187		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1188		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1189		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1190	+	#endif
1191		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1192		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1193		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1306 | Line 1322 | static bool patch_nanokernel(void)
1322		*lp = htonl(POWERPC_BCTR);
1323
1324		lp = (uint32 *)(ROM_BASE + 0x318000);
1325	+	#if EMULATED_PPC
1326	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_ENABLE_INTERRUPT);
1327	+	*lp = htonl(0x48000000 + ((xlp - 0x8004) & 0x03fffffc));        // b            ROM_BASE+0x312c2c
1328	+	#else
1329		*lp++ = htonl(0x81400000 + XLM_IRQ_NEST);       // lwz  r10,XLM_IRQ_NEST
1330		*lp++ = htonl(0x394affff);                                      // subi r10,r10,1
1331		*lp++ = htonl(0x91400000 + XLM_IRQ_NEST);       // stw  r10,XLM_IRQ_NEST
1332		*lp = htonl(0x48000000 + ((xlp - 0x800c) & 0x03fffffc));        // b            ROM_BASE+0x312c2c
1333	+	#endif
1334	+
1335		/*
1336		// Disable FE0A/FE06 opcodes
1337		lp = (uint32 *)(ROM_BASE + 0x3144ac);
#	Line 2151 | Line 2173 | void InstallDrivers(void)
2173		M68kRegisters r;
2174		uint8 pb[SIZEOF_IOParam];
2175
2154	–	#if DISABLE_SCSI && 0
2155	–	// Fake SCSIGlobals
2156	–	static const uint8 fake_scsi_globals[32] = {0,};
2157	–	WriteMacInt32(0xc0c, (uint32)fake_scsi_globals);
2158	–	#endif
2159	–
2176		// Install floppy driver
2177		if (ROMType == ROMTYPE_NEWWORLD) {
2178
#	Line 2171 | Line 2187 | void InstallDrivers(void)
2187		WriteMacInt16(dce + dCtlFlags, SonyDriverFlags);
2188		}
2189
2190	+	#if DISABLE_SCSI && 0
2191	+	// Fake SCSIGlobals
2192	+	static const uint8 fake_scsi_globals[32] = {0,};
2193	+	WriteMacInt32(0xc0c, (uint32)fake_scsi_globals);
2194	+	#endif
2195	+
2196		// Open .Sony driver
2197		WriteMacInt8((uint32)pb + ioPermssn, 0);
2198		WriteMacInt32((uint32)pb + ioNamePtr, (uint32)"\005.Sony");

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