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root/cebix/SheepShaver/src/rom_patches.cpp

Comparing SheepShaver/src/rom_patches.cpp (file contents):
Revision 1.5 by gbeauche, 2003-05-21T18:57:17Z vs.
Revision 1.14 by gbeauche, 2003-10-06T21:00:48Z

#	Line 447 | Line 447 | static const uint8 cdrom_driver[] = {  //
447		0x4e, 0x75                                                      //  rts
448		};
449
450	<	#ifdef __linux__
450	>	#if EMULATED_PPC
451	>	#define SERIAL_TRAMPOLINES 1
452	>	static uint32 serial_nothing_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_NOTHING)), 0};
453	>	static uint32 serial_open_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_OPEN)), 0};
454	>	static uint32 serial_prime_in_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_IN)), 0};
455	>	static uint32 serial_prime_out_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_OUT)), 0};
456	>	static uint32 serial_control_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CONTROL)), 0};
457	>	static uint32 serial_status_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_STATUS)), 0};
458	>	static uint32 serial_close_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CLOSE)), 0};
459	>	#elif defined(__linux__)
460	>	#define SERIAL_TRAMPOLINES 1
461		static uint32 serial_nothing_tvect[2] = {(uint32)SerialNothing, 0};
462		static uint32 serial_open_tvect[2] = {(uint32)SerialOpen, 0};
463		static uint32 serial_prime_in_tvect[2] = {(uint32)SerialPrimeIn, 0};
#	Line 464 | Line 474 | static const uint32 ain_driver[] = {   //
474		0x00000000, 0x00000000,
475		0xaafe0700, 0x00000000,
476		0x00000000, 0x00179822,
477	<	#ifdef __linux__
477	>	#ifdef SERIAL_TRAMPOLINES
478		0x00010004, (uint32)serial_nothing_tvect,
479		#else
480		0x00010004, (uint32)SerialNothing,
#	Line 472 | Line 482 | static const uint32 ain_driver[] = {   //
482		0x00000000, 0x00000000,
483		0xaafe0700, 0x00000000,
484		0x00000000, 0x00179822,
485	<	#ifdef __linux__
485	>	#ifdef SERIAL_TRAMPOLINES
486		0x00010004, (uint32)serial_prime_in_tvect,
487		#else
488		0x00010004, (uint32)SerialPrimeIn,
#	Line 480 | Line 490 | static const uint32 ain_driver[] = {   //
490		0x00000000, 0x00000000,
491		0xaafe0700, 0x00000000,
492		0x00000000, 0x00179822,
493	<	#ifdef __linux__
493	>	#ifdef SERIAL_TRAMPOLINES
494		0x00010004, (uint32)serial_control_tvect,
495		#else
496		0x00010004, (uint32)SerialControl,
#	Line 488 | Line 498 | static const uint32 ain_driver[] = {   //
498		0x00000000, 0x00000000,
499		0xaafe0700, 0x00000000,
500		0x00000000, 0x00179822,
501	<	#ifdef __linux__
501	>	#ifdef SERIAL_TRAMPOLINES
502		0x00010004, (uint32)serial_status_tvect,
503		#else
504		0x00010004, (uint32)SerialStatus,
#	Line 496 | Line 506 | static const uint32 ain_driver[] = {   //
506		0x00000000, 0x00000000,
507		0xaafe0700, 0x00000000,
508		0x00000000, 0x00179822,
509	<	#ifdef __linux__
509	>	#ifdef SERIAL_TRAMPOLINES
510		0x00010004, (uint32)serial_nothing_tvect,
511		#else
512		0x00010004, (uint32)SerialNothing,
#	Line 511 | Line 521 | static const uint32 aout_driver[] = {  //
521		0x00000000, 0x00000000,
522		0xaafe0700, 0x00000000,
523		0x00000000, 0x00179822,
524	<	#ifdef __linux__
524	>	#ifdef SERIAL_TRAMPOLINES
525		0x00010004, (uint32)serial_open_tvect,
526		#else
527		0x00010004, (uint32)SerialOpen,
#	Line 519 | Line 529 | static const uint32 aout_driver[] = {  //
529		0x00000000, 0x00000000,
530		0xaafe0700, 0x00000000,
531		0x00000000, 0x00179822,
532	<	#ifdef __linux__
532	>	#ifdef SERIAL_TRAMPOLINES
533		0x00010004, (uint32)serial_prime_out_tvect,
534		#else
535		0x00010004, (uint32)SerialPrimeOut,
#	Line 527 | Line 537 | static const uint32 aout_driver[] = {  //
537		0x00000000, 0x00000000,
538		0xaafe0700, 0x00000000,
539		0x00000000, 0x00179822,
540	<	#ifdef __linux__
540	>	#ifdef SERIAL_TRAMPOLINES
541		0x00010004, (uint32)serial_control_tvect,
542		#else
543		0x00010004, (uint32)SerialControl,
#	Line 535 | Line 545 | static const uint32 aout_driver[] = {  //
545		0x00000000, 0x00000000,
546		0xaafe0700, 0x00000000,
547		0x00000000, 0x00179822,
548	<	#ifdef __linux__
548	>	#ifdef SERIAL_TRAMPOLINES
549		0x00010004, (uint32)serial_status_tvect,
550		#else
551		0x00010004, (uint32)SerialStatus,
#	Line 543 | Line 553 | static const uint32 aout_driver[] = {  //
553		0x00000000, 0x00000000,
554		0xaafe0700, 0x00000000,
555		0x00000000, 0x00179822,
556	<	#ifdef __linux__
556	>	#ifdef SERIAL_TRAMPOLINES
557		0x00010004, (uint32)serial_close_tvect,
558		#else
559		0x00010004, (uint32)SerialClose,
#	Line 558 | Line 568 | static const uint32 bin_driver[] = {   //
568		0x00000000, 0x00000000,
569		0xaafe0700, 0x00000000,
570		0x00000000, 0x00179822,
571	<	#ifdef __linux__
571	>	#ifdef SERIAL_TRAMPOLINES
572		0x00010004, (uint32)serial_nothing_tvect,
573		#else
574		0x00010004, (uint32)SerialNothing,
#	Line 566 | Line 576 | static const uint32 bin_driver[] = {   //
576		0x00000000, 0x00000000,
577		0xaafe0700, 0x00000000,
578		0x00000000, 0x00179822,
579	<	#ifdef __linux__
579	>	#ifdef SERIAL_TRAMPOLINES
580		0x00010004, (uint32)serial_prime_in_tvect,
581		#else
582		0x00010004, (uint32)SerialPrimeIn,
#	Line 574 | Line 584 | static const uint32 bin_driver[] = {   //
584		0x00000000, 0x00000000,
585		0xaafe0700, 0x00000000,
586		0x00000000, 0x00179822,
587	<	#ifdef __linux__
587	>	#ifdef SERIAL_TRAMPOLINES
588		0x00010004, (uint32)serial_control_tvect,
589		#else
590		0x00010004, (uint32)SerialControl,
#	Line 582 | Line 592 | static const uint32 bin_driver[] = {   //
592		0x00000000, 0x00000000,
593		0xaafe0700, 0x00000000,
594		0x00000000, 0x00179822,
595	<	#ifdef __linux__
595	>	#ifdef SERIAL_TRAMPOLINES
596		0x00010004, (uint32)serial_status_tvect,
597		#else
598		0x00010004, (uint32)SerialStatus,
#	Line 590 | Line 600 | static const uint32 bin_driver[] = {   //
600		0x00000000, 0x00000000,
601		0xaafe0700, 0x00000000,
602		0x00000000, 0x00179822,
603	<	#ifdef __linux__
603	>	#ifdef SERIAL_TRAMPOLINES
604		0x00010004, (uint32)serial_nothing_tvect,
605		#else
606		0x00010004, (uint32)SerialNothing,
#	Line 605 | Line 615 | static const uint32 bout_driver[] = {  //
615		0x00000000, 0x00000000,
616		0xaafe0700, 0x00000000,
617		0x00000000, 0x00179822,
618	<	#ifdef __linux__
618	>	#ifdef SERIAL_TRAMPOLINES
619		0x00010004, (uint32)serial_open_tvect,
620		#else
621		0x00010004, (uint32)SerialOpen,
#	Line 613 | Line 623 | static const uint32 bout_driver[] = {  //
623		0x00000000, 0x00000000,
624		0xaafe0700, 0x00000000,
625		0x00000000, 0x00179822,
626	<	#ifdef __linux__
626	>	#ifdef SERIAL_TRAMPOLINES
627		0x00010004, (uint32)serial_prime_out_tvect,
628		#else
629		0x00010004, (uint32)SerialPrimeOut,
#	Line 621 | Line 631 | static const uint32 bout_driver[] = {  //
631		0x00000000, 0x00000000,
632		0xaafe0700, 0x00000000,
633		0x00000000, 0x00179822,
634	<	#ifdef __linux__
634	>	#ifdef SERIAL_TRAMPOLINES
635		0x00010004, (uint32)serial_control_tvect,
636		#else
637		0x00010004, (uint32)SerialControl,
#	Line 629 | Line 639 | static const uint32 bout_driver[] = {  //
639		0x00000000, 0x00000000,
640		0xaafe0700, 0x00000000,
641		0x00000000, 0x00179822,
642	<	#ifdef __linux__
642	>	#ifdef SERIAL_TRAMPOLINES
643		0x00010004, (uint32)serial_status_tvect,
644		#else
645		0x00010004, (uint32)SerialStatus,
#	Line 637 | Line 647 | static const uint32 bout_driver[] = {  //
647		0x00000000, 0x00000000,
648		0xaafe0700, 0x00000000,
649		0x00000000, 0x00179822,
650	<	#ifdef __linux__
650	>	#ifdef SERIAL_TRAMPOLINES
651		0x00010004, (uint32)serial_close_tvect,
652		#else
653		0x00010004, (uint32)SerialClose,
#	Line 669 | Line 679 | static const uint8 adbop_patch[] = {   //
679
680
681		/*
682	+	*  Copy PowerPC code to ROM image and reverse bytes if necessary
683	+	*/
684	+
685	+	static inline void memcpy_powerpc_code(void *dst, const void *src, size_t len)
686	+	{
687	+	#ifdef WORDS_BIGENDIAN
688	+	(void)memcpy(dst, src, len);
689	+	#else
690	+	uint32 *d = (uint32 *)dst;
691	+	uint32 *s = (uint32 *)src;
692	+	for (int i = 0; i < len/4; i++)
693	+	d[i] = htonl(s[i]);
694	+	#endif
695	+	}
696	+
697	+
698	+	/*
699		*  Install ROM patches (RAMBase and KernelDataAddr must be set)
700		*/
701
#	Line 691 | Line 718 | bool PatchROM(void)
718		ROMType = ROMTYPE_ZANZIBAR;
719		else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gazelle", 12))
720		ROMType = ROMTYPE_GAZELLE;
721	+	else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gossamer", 13))
722	+	ROMType = ROMTYPE_GOSSAMER;
723		else if (!memcmp((void *)(ROM_BASE + 0x30d064), "NewWorld", 8))
724		ROMType = ROMTYPE_NEWWORLD;
725		else
726		return false;
727
728	+	// Check that other ROM addresses point to really free regions
729	+	printf("%08x\n", ntohl(*(uint32 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE)));
730	+	if (ntohl(*(uint32 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE)) != 0x6b636b63)
731	+	return false;
732	+	if (ntohl(*(uint32 *)(ROM_BASE + PUT_SCRAP_PATCH_SPACE)) != 0x6b636b63)
733	+	return false;
734	+	if (ntohl(*(uint32 *)(ROM_BASE + GET_SCRAP_PATCH_SPACE)) != 0x6b636b63)
735	+	return false;
736	+	if (ntohl(*(uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE)) != 0x6b636b63)
737	+	return false;
738	+
739		// Apply patches
740		if (!patch_nanokernel_boot()) return false;
741		if (!patch_68k_emul()) return false;
#	Line 740 | Line 780 | static bool patch_nanokernel_boot(void)
780		lp[0xfd8 >> 2] = htonl(ROM_BASE + 0x2a);                // 68k reset vector
781
782		// Skip SR/BAT/SDR init
783	<	if (ROMType == ROMTYPE_GAZELLE || ROMType == ROMTYPE_NEWWORLD) {
783	>	if (ROMType == ROMTYPE_GAZELLE || ROMType == ROMTYPE_GOSSAMER || ROMType == ROMTYPE_NEWWORLD) {
784		lp = (uint32 *)(ROM_BASE + 0x310000);
785		*lp++ = htonl(POWERPC_NOP);
786		*lp = htonl(0x38000000);
787		}
788	<	static const uint32 sr_init_loc[] = {0x3101b0, 0x3101b0, 0x3101b0, 0x3101ec, 0x310200};
788	>	static const uint32 sr_init_loc[] = {0x3101b0, 0x3101b0, 0x3101b0, 0x3101ec, 0x3101fc, 0x310200};
789		lp = (uint32 *)(ROM_BASE + 0x310008);
790		*lp = htonl(0x48000000 | (sr_init_loc[ROMType] - 8) & 0xffff);  // b            ROM_BASE+0x3101b0
791		lp = (uint32 *)(ROM_BASE + sr_init_loc[ROMType]);
#	Line 755 | Line 795 | static bool patch_nanokernel_boot(void)
795		*lp = htonl(0x3de00010);                // lis  r15,0x0010      (size of kernel memory)
796
797		// Don't read PVR
798	<	static const uint32 pvr_loc[] = {0x3103b0, 0x3103b4, 0x3103b4, 0x310400, 0x310438};
798	>	static const uint32 pvr_loc[] = {0x3103b0, 0x3103b4, 0x3103b4, 0x310400, 0x310430, 0x310438};
799		lp = (uint32 *)(ROM_BASE + pvr_loc[ROMType]);
800		*lp = htonl(0x81800000 + XLM_PVR);      // lwz  r12,(theoretical PVR)
801
#	Line 903 | Line 943 | static bool patch_nanokernel_boot(void)
943		*lp = htonl(POWERPC_NOP);
944
945		// Don't read PVR
946	<	static const uint32 pvr_ofs[] = {0x138, 0x138, 0x138, 0x140, 0x148};
946	>	static const uint32 pvr_ofs[] = {0x138, 0x138, 0x138, 0x140, 0x148, 0x148};
947		lp = (uint32 *)(ROM_BASE + loc + pvr_ofs[ROMType]);
948		*lp = htonl(0x82e00000 + XLM_PVR);              // lwz  r23,(theoretical PVR)
949		lp = (uint32 *)(ROM_BASE + loc + 0x170);
950	<	if (ntohl(*lp) == 0x7eff42a6)   // NewWorld ROM
950	>	if (ntohl(*lp) == 0x7eff42a6)   // NewWorld or Gossamer ROM
951		*lp = htonl(0x82e00000 + XLM_PVR);      // lwz  r23,(theoretical PVR)
952		lp = (uint32 *)(ROM_BASE + 0x313134);
953		if (ntohl(*lp) == 0x7e5f42a6)
#	Line 920 | Line 960 | static bool patch_nanokernel_boot(void)
960		*lp = htonl(0x81200000 + XLM_PVR);      // lzw  r9,(theoritical PVR)
961
962		// Don't read SDR1
963	<	static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c};
963	>	static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c, 0x19c};
964		lp = (uint32 *)(ROM_BASE + loc + sdr1_ofs[ROMType]);
965		*lp++ = htonl(0x3d00dead);              // lis  r8,0xdead               (pointer to page table)
966		*lp++ = htonl(0x3ec0001f);              // lis  r22,0x001f      (size of page table)
967		*lp = htonl(POWERPC_NOP);
968
969		// Don't clear page table
970	<	static const uint32 pgtb_ofs[] = {0x198, 0x198, 0x198, 0x1a0, 0x1c4};
970	>	static const uint32 pgtb_ofs[] = {0x198, 0x198, 0x198, 0x1a0, 0x1c0, 0x1c4};
971		lp = (uint32 *)(ROM_BASE + loc + pgtb_ofs[ROMType]);
972		*lp = htonl(POWERPC_NOP);
973
974		// Don't invalidate TLB
975	<	static const uint32 tlb_ofs[] = {0x1a0, 0x1a0, 0x1a0, 0x1a8, 0x1cc};
975	>	static const uint32 tlb_ofs[] = {0x1a0, 0x1a0, 0x1a0, 0x1a8, 0x1c8, 0x1cc};
976		lp = (uint32 *)(ROM_BASE + loc + tlb_ofs[ROMType]);
977		*lp = htonl(POWERPC_NOP);
978
979		// Don't create RAM descriptor table
980	<	static const uint32 desc_ofs[] = {0x350, 0x350, 0x350, 0x358, 0x37c};
980	>	static const uint32 desc_ofs[] = {0x350, 0x350, 0x350, 0x358, 0x378, 0x37c};
981		lp = (uint32 *)(ROM_BASE + loc + desc_ofs[ROMType]);
982		*lp = htonl(POWERPC_NOP);
983
984		// Don't load SRs and BATs
985	<	static const uint32 sr_ofs[] = {0x3d8, 0x3d8, 0x3d8, 0x3e0, 0x404};
985	>	static const uint32 sr_ofs[] = {0x3d8, 0x3d8, 0x3d8, 0x3e0, 0x400, 0x404};
986		lp = (uint32 *)(ROM_BASE + loc + sr_ofs[ROMType]);
987		*lp = htonl(POWERPC_NOP);
988
989		// Don't mess with SRs
990	<	static const uint32 sr2_ofs[] = {0x312118, 0x312118, 0x312118, 0x312118, 0x3121b4};
990	>	static const uint32 sr2_ofs[] = {0x312118, 0x312118, 0x312118, 0x312118, 0x312118, 0x3121b4};
991		lp = (uint32 *)(ROM_BASE + sr2_ofs[ROMType]);
992		*lp = htonl(POWERPC_BLR);
993
994		// Don't check performance monitor
995	<	static const uint32 pm_ofs[] = {0x313148, 0x313148, 0x313148, 0x313148, 0x313218};
995	>	static const uint32 pm_ofs[] = {0x313148, 0x313148, 0x313148, 0x313148, 0x313158, 0x313218};
996		lp = (uint32 *)(ROM_BASE + pm_ofs[ROMType]);
997		while (ntohl(*lp) != 0x7e58eba6) lp++;
998		*lp++ = htonl(POWERPC_NOP);
#	Line 988 | Line 1028 | static bool patch_nanokernel_boot(void)
1028		*lp++ = htonl(POWERPC_NOP);
1029
1030		// Jump to 68k emulator
1031	<	static const uint32 jump68k_ofs[] = {0x40c, 0x40c, 0x40c, 0x414, 0x438};
1031	>	static const uint32 jump68k_ofs[] = {0x40c, 0x40c, 0x40c, 0x414, 0x434, 0x438};
1032		lp = (uint32 *)(ROM_BASE + loc + jump68k_ofs[ROMType]);
1033		*lp++ = htonl(0x80610634);              // lwz  r3,0x0634(r1)   (pointer to Emulator Data)
1034		*lp++ = htonl(0x8081119c);              // lwz  r4,0x119c(r1)   (pointer to opcode table)
#	Line 1009 | Line 1049 | static bool patch_68k_emul(void)
1049		uint32 base;
1050
1051		// Overwrite twi instructions
1052	<	static const uint32 twi_loc[] = {0x36e680, 0x36e6c0, 0x36e6c0, 0x36e6c0, 0x36e740};
1052	>	static const uint32 twi_loc[] = {0x36e680, 0x36e6c0, 0x36e6c0, 0x36e6c0, 0x36e740, 0x36e740};
1053		base = twi_loc[ROMType];
1054		lp = (uint32 *)(ROM_BASE + base);
1055		*lp++ = htonl(0x48000000 + 0x36f900 - base);            // b 0x36f900 (Emulator start)
#	Line 1030 | Line 1070 | static bool patch_68k_emul(void)
1070		*lp = htonl(POWERPC_ILLEGAL);
1071
1072		#if EMULATED_PPC
1073	<	// Install EMUL_RETURN, EXEC_RETURN and EMUL_OP opcodes
1073	>	// Install EMUL_RETURN, EXEC_RETURN, EXEC_NATIVE and EMUL_OP opcodes
1074		lp = (uint32 *)(ROM_BASE + 0x380000 + (M68K_EMUL_RETURN << 3));
1075		*lp++ = htonl(POWERPC_EMUL_OP);
1076		*lp++ = htonl(0x4bf66e80);                                                      // b    0x366084
1077		*lp++ = htonl(POWERPC_EMUL_OP | 1);
1078		*lp++ = htonl(0x4bf66e78);                                                      // b    0x366084
1079	+	*lp++ = htonl(POWERPC_EMUL_OP | 2);
1080	+	*lp++ = htonl(0x4bf66e70);                                                      // b    0x366084
1081		for (int i=0; i<OP_MAX; i++) {
1082	<	*lp++ = htonl(POWERPC_EMUL_OP | (i + 2));
1083	<	*lp++ = htonl(0x4bf66e70 - i*8);                        // b    0x366084
1082	>	*lp++ = htonl(POWERPC_EMUL_OP | (i + 3));
1083	>	*lp++ = htonl(0x4bf66e68 - i*8);                                // b    0x366084
1084		}
1085		#else
1086		// Install EMUL_RETURN, EXEC_RETURN and EMUL_OP opcodes
#	Line 1047 | Line 1089 | static bool patch_68k_emul(void)
1089		*lp++ = htonl(0x4bf705fc);                                                      // b    0x36f800
1090		*lp++ = htonl(0x80000000 + XLM_EXEC_RETURN_PROC);       // lwz  r0,XLM_EXEC_RETURN_PROC
1091		*lp++ = htonl(0x4bf705f4);                                                      // b    0x36f800
1092	+	*lp++ = htonl(0x00dead00);                                                      // Let SheepShaver crash, since
1093	+	*lp++ = htonl(0x00beef00);                                                      // no native opcode is available
1094		for (int i=0; i<OP_MAX; i++) {
1095		*lp++ = htonl(0x38a00000 + i);                          // li   r5,OP_*
1096	<	*lp++ = htonl(0x4bf705f4 - i*8);                        // b    0x36f808
1096	>	*lp++ = htonl(0x4bf705ec - i*8);                        // b    0x36f808
1097		}
1098
1099		// Extra routines for EMUL_RETURN/EXEC_RETURN/EMUL_OP
#	Line 1065 | Line 1109 | static bool patch_68k_emul(void)
1109		// Extra routine for 68k emulator start
1110		lp = (uint32 *)(ROM_BASE + 0x36f900);
1111		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1112	+	#if EMULATED_PPC
1113	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1114	+	#else
1115		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1116		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1117		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1118	+	#endif
1119		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1120		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1121		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1095 | Line 1143 | static bool patch_68k_emul(void)
1143		// Extra routine for Mixed Mode
1144		lp = (uint32 *)(ROM_BASE + 0x36fa00);
1145		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1146	+	#if EMULATED_PPC
1147	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1148	+	#else
1149		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1150		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1151		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1152	+	#endif
1153		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1154		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1155		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1125 | Line 1177 | static bool patch_68k_emul(void)
1177		// Extra routine for Reset/FC1E opcode
1178		lp = (uint32 *)(ROM_BASE + 0x36fb00);
1179		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1180	+	#if EMULATED_PPC
1181	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1182	+	#else
1183		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1184		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1185		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1186	+	#endif
1187		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1188		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1189		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1155 | Line 1211 | static bool patch_68k_emul(void)
1211		// Extra routine for FE0A opcode (QuickDraw 3D needs this)
1212		lp = (uint32 *)(ROM_BASE + 0x36fc00);
1213		*lp++ = htonl(0x7c2903a6);                                      // mtctr        r1
1214	+	#if EMULATED_PPC
1215	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_DISABLE_INTERRUPT);
1216	+	#else
1217		*lp++ = htonl(0x80200000 + XLM_IRQ_NEST);       // lwz          r1,XLM_IRQ_NEST
1218		*lp++ = htonl(0x38210001);                                      // addi         r1,r1,1
1219		*lp++ = htonl(0x90200000 + XLM_IRQ_NEST);       // stw          r1,XLM_IRQ_NEST
1220	+	#endif
1221		*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz              r1,XLM_KERNEL_DATA
1222		*lp++ = htonl(0x90c10018);                                      // stw          r6,0x18(r1)
1223		*lp++ = htonl(0x7cc902a6);                                      // mfctr        r6
#	Line 1292 | Line 1352 | static bool patch_nanokernel(void)
1352		*lp = htonl(POWERPC_BCTR);
1353
1354		lp = (uint32 *)(ROM_BASE + 0x318000);
1355	+	#if EMULATED_PPC
1356	+	*lp++ = POWERPC_NATIVE_OP(NATIVE_ENABLE_INTERRUPT);
1357	+	*lp = htonl(0x48000000 + ((xlp - 0x8004) & 0x03fffffc));        // b            ROM_BASE+0x312c2c
1358	+	#else
1359		*lp++ = htonl(0x81400000 + XLM_IRQ_NEST);       // lwz  r10,XLM_IRQ_NEST
1360		*lp++ = htonl(0x394affff);                                      // subi r10,r10,1
1361		*lp++ = htonl(0x91400000 + XLM_IRQ_NEST);       // stw  r10,XLM_IRQ_NEST
1362		*lp = htonl(0x48000000 + ((xlp - 0x800c) & 0x03fffffc));        // b            ROM_BASE+0x312c2c
1363	+	#endif
1364	+
1365		/*
1366		// Disable FE0A/FE06 opcodes
1367		lp = (uint32 *)(ROM_BASE + 0x3144ac);
#	Line 1365 | Line 1431 | static bool patch_68k(void)
1431		lp[0x28 >> 2] = htonl(0x00000861);
1432		lp[0x58 >> 2] = htonl(0x30200000);
1433		lp[0x60 >> 2] = htonl(0x0000003d);
1434	+	} else if (ROMType == ROMTYPE_GOSSAMER) {
1435	+	base = 0x12d20;
1436	+	lp = (uint32 *)(ROM_BASE + base - 0x14);
1437	+	lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14));
1438	+	lp[0x10 >> 2] = htonl(0xcc003d11);              // Make it like the PowerMac 9500 UniversalInfo
1439	+	lp[0x14 >> 2] = htonl(0x3fff0401);
1440	+	lp[0x18 >> 2] = htonl(0x0300001c);
1441	+	lp[0x1c >> 2] = htonl(0x000108c4);
1442	+	lp[0x24 >> 2] = htonl(0xc301bf26);
1443	+	lp[0x28 >> 2] = htonl(0x00000861);
1444	+	lp[0x58 >> 2] = htonl(0x30410000);
1445	+	lp[0x60 >> 2] = htonl(0x0000003d);
1446		}
1447
1448		// Construct AddrMap for NewWorld ROM
1449	<	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_ZANZIBAR) {
1449	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) {
1450		lp = (uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE);
1451		memset(lp - 10, 0, 0x128);
1452		lp[-10] = htonl(0x0300001c);
#	Line 1494 | Line 1572 | static bool patch_68k(void)
1572		*wp++ = htons(M68K_EMUL_OP_XPRAM2);
1573		*wp = htons(0x4ed3);                    // jmp  (a3)
1574
1575	<	static const uint32 nvram3_loc[] = {0x582f0, 0xa0a0, 0x7e50, 0xa1d0, 0};
1576	<	wp = (uint16 *)(ROM_BASE + nvram3_loc[ROMType]);
1575	>	static const uint8 nvram3_dat[] = {0x4e, 0xd3, 0x06, 0x41, 0x13, 0x00};
1576	>	if ((base = find_rom_data(0x7000, 0xb000, nvram3_dat, sizeof(nvram3_dat))) == 0) return false;
1577	>	D(bug("nvram3 %08lx\n", base));
1578	>	wp = (uint16 *)(ROM_BASE + base + 2);
1579	>	*wp++ = htons(M68K_EMUL_OP_XPRAM3);
1580	>	*wp = htons(0x4ed3);                    // jmp  (a3)
1581	>
1582	>	static const uint32 nvram4_loc[] = {0x582f0, 0xa0a0, 0x7e50, 0xa1d0, 0x538d0, 0};
1583	>	wp = (uint16 *)(ROM_BASE + nvram4_loc[ROMType]);
1584		*wp++ = htons(0x202f);                  // move.l       4(sp),d0
1585		*wp++ = htons(0x0004);
1586		*wp++ = htons(M68K_EMUL_OP_NVRAM1);
#	Line 1508 | Line 1593 | static bool patch_68k(void)
1593		*wp = htons(0x0004);
1594		}
1595
1596	<	static const uint32 nvram4_loc[] = {0x58460, 0xa0f0, 0x7f40, 0xa220, 0};
1597	<	wp = (uint16 *)(ROM_BASE + nvram4_loc[ROMType]);
1596	>	static const uint32 nvram5_loc[] = {0x58460, 0xa0f0, 0x7f40, 0xa220, 0x53a20, 0};
1597	>	wp = (uint16 *)(ROM_BASE + nvram5_loc[ROMType]);
1598		if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GAZELLE) {
1599		*wp++ = htons(0x202f);                  // move.l       4(sp),d0
1600		*wp++ = htons(0x0004);
#	Line 1686 | Line 1771 | static bool patch_68k(void)
1771		if ((base = find_rom_data(0x13000, 0x20000, gc_mask2_dat, sizeof(gc_mask2_dat))) == 0) return false;
1772		D(bug("gc_mask2 %08lx\n", base));
1773		wp = (uint16 *)(ROM_BASE + base);
1774	+	if (ROMType == ROMTYPE_GOSSAMER)
1775	+	*wp++ = htons(M68K_NOP);
1776		for (int i=0; i<5; i++) {
1777		*wp++ = htons(M68K_NOP);
1778		*wp++ = htons(M68K_NOP);
#	Line 1693 | Line 1780 | static bool patch_68k(void)
1780		*wp++ = htons(M68K_NOP);
1781		wp += 2;
1782		}
1783	<	if (ROMType == ROMTYPE_ZANZIBAR) {
1783	>	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) {
1784		for (int i=0; i<6; i++) {
1785		*wp++ = htons(M68K_NOP);
1786		*wp++ = htons(M68K_NOP);
#	Line 1766 | Line 1853 | static bool patch_68k(void)
1853		*wp = htons(M68K_RTS);
1854
1855		// Don't install Time Manager task for 60Hz interrupt (Enable60HzInts, via 0x2b8)
1856	<	if (ROMType == ROMTYPE_NEWWORLD) {
1856	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
1857		static const uint8 tm_task_dat[] = {0x30, 0x3c, 0x4e, 0x2b, 0xa9, 0xc9};
1858	<	if ((base = find_rom_data(0x2e0, 0x320, tm_task_dat, sizeof(tm_task_dat))) == 0) return false;
1858	>	if ((base = find_rom_data(0x2a0, 0x320, tm_task_dat, sizeof(tm_task_dat))) == 0) return false;
1859		D(bug("tm_task %08lx\n", base));
1860		wp = (uint16 *)(ROM_BASE + base + 28);
1861		*wp++ = htons(M68K_NOP);
#	Line 1788 | Line 1875 | static bool patch_68k(void)
1875		}
1876
1877		// Don't read PVR from 0x5fffef80 in DriverServicesLib (via 0x316)
1878	<	if (ROMType != ROMTYPE_NEWWORLD) {
1878	>	if (ROMType != ROMTYPE_NEWWORLD && ROMType != ROMTYPE_GOSSAMER) {
1879		uint32 dsl_offset = find_rom_resource(FOURCC('n','l','i','b'), -16401);
1880		if (ROMType == ROMTYPE_ZANZIBAR) {
1881		static const uint8 dsl_pvr_dat[] = {0x40, 0x82, 0x00, 0x40, 0x38, 0x60, 0xef, 0x80, 0x3c, 0x63, 0x60, 0x00, 0x80, 0x83, 0x00, 0x00, 0x54, 0x84, 0x84, 0x3e};
#	Line 1874 | Line 1961 | static bool patch_68k(void)
1961		D(bug("scsi_var2 %08lx\n", base));
1962		wp = (uint16 *)(ROM_BASE + base);
1963		*wp++ = htons(0x7000);  // moveq #0,d0
1964	<	*wp = htons(M68K_RTS);  // bra
1964	>	*wp = htons(M68K_RTS);
1965	>	}
1966	>	}
1967	>	else if (ROMType == ROMTYPE_GOSSAMER) {
1968	>	static const uint8 scsi_var_dat[] = {0x70, 0x01, 0xa0, 0x89, 0x4a, 0x6e, 0xfe, 0xac, 0x4f, 0xef, 0x00, 0x10, 0x66, 0x00};
1969	>	if ((base = find_rom_data(0x1d700, 0x1d800, scsi_var_dat, sizeof(scsi_var_dat))) != 0) {
1970	>	D(bug("scsi_var %08lx\n", base));
1971	>	wp = (uint16 *)(ROM_BASE + base + 12);
1972	>	*wp = htons(0x6000);    // bra
1973	>	}
1974	>
1975	>	static const uint8 scsi_var2_dat[] = {0x4e, 0x56, 0xfc, 0x5a, 0x48, 0xe7, 0x1f, 0x38};
1976	>	if ((base = find_rom_data(0x1d900, 0x1da00, scsi_var2_dat, sizeof(scsi_var2_dat))) != 0) {
1977	>	D(bug("scsi_var2 %08lx\n", base));
1978	>	wp = (uint16 *)(ROM_BASE + base);
1979	>	*wp++ = htons(0x7000);  // moveq #0,d0
1980	>	*wp = htons(M68K_RTS);
1981		}
1982		}
1983		#endif
#	Line 1930 | Line 2033 | static bool patch_68k(void)
2033		memcpy((void *)(ROM_BASE + sony_offset + 0x200), cdrom_driver, sizeof(cdrom_driver));
2034
2035		// Install serial drivers
2036	<	memcpy((void *)(ROM_BASE + sony_offset + 0x300), ain_driver, sizeof(ain_driver));
2037	<	memcpy((void *)(ROM_BASE + sony_offset + 0x400), aout_driver, sizeof(aout_driver));
2038	<	memcpy((void *)(ROM_BASE + sony_offset + 0x500), bin_driver, sizeof(bin_driver));
2039	<	memcpy((void *)(ROM_BASE + sony_offset + 0x600), bout_driver, sizeof(bout_driver));
2036	>	memcpy_powerpc_code((void *)(ROM_BASE + sony_offset + 0x300), ain_driver, sizeof(ain_driver));
2037	>	memcpy_powerpc_code((void *)(ROM_BASE + sony_offset + 0x400), aout_driver, sizeof(aout_driver));
2038	>	memcpy_powerpc_code((void *)(ROM_BASE + sony_offset + 0x500), bin_driver, sizeof(bin_driver));
2039	>	memcpy_powerpc_code((void *)(ROM_BASE + sony_offset + 0x600), bout_driver, sizeof(bout_driver));
2040
2041		// Copy icons to ROM
2042		SonyDiskIconAddr = ROM_BASE + sony_offset + 0x800;
#	Line 1954 | Line 2057 | static bool patch_68k(void)
2057		*wp = htons(M68K_RTS);
2058
2059		// Don't install serial drivers from ROM
2060	<	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD) {
2060	>	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
2061		wp = (uint16 *)(ROM_BASE + find_rom_resource(FOURCC('S','E','R','D'), 0));
2062		*wp = htons(M68K_RTS);
2063		} else {
#	Line 2013 | Line 2116 | static bool patch_68k(void)
2116		wp = (uint16 *)(ROM_BASE + base);
2117		if (ROMType == ROMTYPE_ZANZIBAR)
2118		*wp = htons(M68K_RTS);
2119	<	else
2119	>	else if (ntohs(wp[-4]) == 0x61ff)
2120	>	*wp = htons(M68K_RTS);
2121	>	else if (ntohs(wp[-2]) == 0x6700)
2122		wp[-2] = htons(0x6000); // bra
2123
2124		// Patch PowerOff()
#	Line 2136 | Line 2241 | void InstallDrivers(void)
2241		uint8 pb[SIZEOF_IOParam];
2242
2243		// Install floppy driver
2244	<	if (ROMType == ROMTYPE_NEWWORLD) {
2244	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
2245
2246	<	// Force installation of floppy driver with NewWorld ROMs
2246	>	// Force installation of floppy driver with NewWorld and Gossamer ROMs
2247		r.a[0] = ROM_BASE + sony_offset;
2248		r.d[0] = (uint32)SonyRefNum;
2249		Execute68kTrap(0xa43d, &r);             // DrvrInstallRsrvMem()
#	Line 2149 | Line 2254 | void InstallDrivers(void)
2254		WriteMacInt16(dce + dCtlFlags, SonyDriverFlags);
2255		}
2256
2257	+	#if DISABLE_SCSI && 0
2258	+	// Fake SCSIGlobals
2259	+	static const uint8 fake_scsi_globals[32] = {0,};
2260	+	WriteMacInt32(0xc0c, (uint32)fake_scsi_globals);
2261	+	#endif
2262	+
2263		// Open .Sony driver
2264		WriteMacInt8((uint32)pb + ioPermssn, 0);
2265		WriteMacInt32((uint32)pb + ioNamePtr, (uint32)"\005.Sony");

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