[ViewVC] Diff of: cebix/SheepShaver/src/rom

Comparing SheepShaver/src/rom_patches.cpp (file contents):
Revision 1.37 by gbeauche, 2004-12-12T18:45:44Z vs.
Revision 1.42 by gbeauche, 2005-12-12T20:46:31Z

#	Line 1 \| Line 1
1		/*
2		* rom_patches.cpp - ROM patches
3		*
4	<	* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
4	>	* SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig
5		*
6		* This program is free software; you can redistribute it and/or modify
7		* it under the terms of the GNU General Public License as published by
#	Line 224 \| Line 224 \| static uint32 rsrc_ptr = 0;
224		// id = 4711 means "find any ID"
225		static uint32 find_rom_resource(uint32 s_type, int16 s_id = 4711, bool cont = false)
226		{
227	<	uint32 lp = (uint32 )(ROMBaseHost + 0x1a);
228	<	uint32 x = ntohl(*lp);
229	<	uint8 bp = (uint8 )(ROMBaseHost + x + 5);
230	<	uint32 header_size = *bp;
227	>	uint32 lp = ROM_BASE + 0x1a;
228	>	uint32 x = ReadMacInt32(lp);
229	>	uint32 header_size = ReadMacInt8(ROM_BASE + x + 5);
230
231		if (!cont)
232		rsrc_ptr = x;
#	Line 235 \| Line 234 \| static uint32 find_rom_resource(uint32 s
234		return 0;
235
236		for (;;) {
237	<	lp = (uint32 *)(ROMBaseHost + rsrc_ptr);
238	<	rsrc_ptr = ntohl(*lp);
237	>	lp = ROM_BASE + rsrc_ptr;
238	>	rsrc_ptr = ReadMacInt32(lp);
239		if (rsrc_ptr == 0)
240		break;
241
242		rsrc_ptr += header_size;
243
244	<	lp = (uint32 *)(ROMBaseHost + rsrc_ptr + 4);
245	<	uint32 data = ntohl(*lp); lp++;
246	<	uint32 type = ntohl(*lp); lp++;
247	<	int16 id = ntohs((int16 )lp);
244	>	lp = ROM_BASE + rsrc_ptr + 4;
245	>	uint32 data = ReadMacInt32(lp);
246	>	uint32 type = ReadMacInt32(lp + 4);
247	>	int16 id = ReadMacInt16(lp + 8);
248		if (type == s_type && (id == s_id \|\| s_id == 4711))
249		return data;
250		}
#	Line 259 \| Line 258 \| static uint32 find_rom_resource(uint32 s
258
259		static uint32 find_rom_trap(uint16 trap)
260		{
261	<	uint32 lp = (uint32 )(ROMBaseHost + 0x22);
263	<	lp = (uint32 )(ROMBaseHost + ntohl(lp));
261	>	uint32 lp = ROM_BASE + ReadMacInt32(ROM_BASE + 0x22);
262
263		if (trap > 0xa800)
264	<	return ntohl(lp[trap & 0x3ff]);
264	>	return ReadMacInt32(lp + 4 * (trap & 0x3ff));
265		else
266	<	return ntohl(lp[(trap & 0xff) + 0x400]);
266	>	return ReadMacInt32(lp + 4 * ((trap & 0xff) + 0x400));
267		}
268
269
#	Line 1085 \| Line 1083 \| static bool patch_68k_emul(void)
1083		*lp++ = htonl(0x48000000 + 0x36fb00 - base - 8); // b 0x36fb00 (Reset/FC1E opcode)
1084		*lp++ = htonl(0x48000000 + 0x36fc00 - base - 12); // FE0A opcode
1085		*lp++ = htonl(POWERPC_ILLEGAL); // Interrupt
1086	<	*lp++ = htonl(POWERPC_ILLEGAL); // ?
1086	>	*lp++ = htonl(0x48000000 + 0x36fd00 - base - 20); // FE0F opcode
1087		*lp++ = htonl(POWERPC_ILLEGAL);
1088		*lp++ = htonl(POWERPC_ILLEGAL);
1089		*lp++ = htonl(POWERPC_ILLEGAL);
#	Line 1254 \| Line 1252 \| static bool patch_68k_emul(void)
1252		*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020
1253		*lp = htonl(0x4e800020); // blr
1254
1255	+	// Extra routine for FE0F opcode (power management)
1256	+	lp = (uint32 *)(ROMBaseHost + 0x36fd00);
1257	+	*lp++ = htonl(0x7c2903a6); // mtctr r1
1258	+	*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST
1259	+	*lp++ = htonl(0x38210001); // addi r1,r1,1
1260	+	*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST
1261	+	*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA
1262	+	*lp++ = htonl(0x90c10018); // stw r6,0x18(r1)
1263	+	*lp++ = htonl(0x7cc902a6); // mfctr r6
1264	+	*lp++ = htonl(0x90c10004); // stw r6,$0004(r1)
1265	+	*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1)
1266	+	*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6)
1267	+	*lp++ = htonl(0x91060144); // stw r8,$0144(r6)
1268	+	*lp++ = htonl(0x9126014c); // stw r9,$014c(r6)
1269	+	*lp++ = htonl(0x91460154); // stw r10,$0154(r6)
1270	+	*lp++ = htonl(0x9166015c); // stw r11,$015c(r6)
1271	+	*lp++ = htonl(0x91860164); // stw r12,$0164(r6)
1272	+	*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6)
1273	+	*lp++ = htonl(0x7da00026); // mfcr r13
1274	+	*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1)
1275	+	*lp++ = htonl(0x7d8802a6); // mflr r12
1276	+	*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000
1277	+	*lp++ = htonl(0x81410604); // lwz r10,0x0604(r1)
1278	+	*lp++ = htonl(0x7d4803a6); // mtlr r10
1279	+	*lp++ = htonl(0x7d8a6378); // mr r10,r12
1280	+	*lp++ = htonl(0x3d600002); // lis r11,0x0002
1281	+	*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR)
1282	+	*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020
1283	+	*lp = htonl(0x4e800020); // blr
1284	+
1285		// Patch DR emulator to jump to right address when an interrupt occurs
1286		lp = (uint32 *)(ROMBaseHost + 0x370000);
1287		while (lp < (uint32 *)(ROMBaseHost + 0x380000)) {
#	Line 1382 \| Line 1410 \| static bool patch_nanokernel(void)
1410		*lp++ = htonl(POWERPC_NOP);
1411		*lp = htonl(POWERPC_NOP);
1412
1413	+	// Disable suspend (FE0F opcode)
1414	+	// TODO: really suspend SheepShaver?
1415	+	static const uint8 suspend_dat[] = {0x7c, 0x88, 0x68, 0x39, 0x41, 0x9d};
1416	+	if ((base = find_rom_data(0x315000, 0x316000, suspend_dat, sizeof(suspend_dat))) == 0) return false;
1417	+	D(bug("suspend %08lx\n", base));
1418	+	lp = (uint32 *)(ROMBaseHost + base + 4);
1419	+	lp = htonl((ntohl(lp) & 0xffff) \| 0x48000000); // bgt -> b
1420	+
1421		// Patch trap return routine
1422		static const uint8 trap_return_dat[] = {0x80, 0xc1, 0x00, 0x18, 0x80, 0x21, 0x00, 0x04, 0x4c, 0x00, 0x00, 0x64};
1423		if ((base = find_rom_data(0x312000, 0x320000, trap_return_dat, sizeof(trap_return_dat))) == 0) return false;
#	Line 1677 \| Line 1713 \| static bool patch_68k(void)
1713		static const uint8 ext_cache_dat[] = {0x4e, 0x7b, 0x00, 0x02};
1714		if ((base = find_rom_data(0x1d0, 0x230, ext_cache_dat, sizeof(ext_cache_dat))) == 0) return false;
1715		D(bug("ext_cache %08lx\n", base));
1716	<	lp = (uint32 *)(ROMBaseHost + base + 6);
1717	<	wp = (uint16 )(ROMBaseHost + ntohl(lp) + base + 6);
1716	>	loc = ReadMacInt32(ROM_BASE + base + 6);
1717	>	wp = (uint16 *)(ROMBaseHost + loc + base + 6);
1718		*wp = htons(M68K_RTS);
1719	<	lp = (uint32 *)(ROMBaseHost + base + 12);
1720	<	wp = (uint16 )(ROMBaseHost + ntohl(lp) + base + 12);
1719	>	loc = ReadMacInt32(ROM_BASE + base + 12);
1720	>	wp = (uint16 *)(ROMBaseHost + loc + base + 12);
1721		*wp = htons(M68K_RTS);
1722
1723		// Fake CPU speed test (SetupTimeK)
#	Line 2226 \| Line 2262 \| static bool patch_68k(void)
2262		*wp++ = htons(M68K_JMP);
2263		*wp++ = htons((ROM_BASE + put_scrap) >> 16);
2264		*wp++ = htons((ROM_BASE + put_scrap) & 0xffff);
2265	<	lp = (uint32 *)(ROMBaseHost + 0x22);
2266	<	lp = (uint32 )(ROMBaseHost + ntohl(lp));
2231	<	lp[0xa9fe & 0x3ff] = htonl(PUT_SCRAP_PATCH_SPACE);
2265	>	base = ROM_BASE + ReadMacInt32(ROM_BASE + 0x22);
2266	>	WriteMacInt32(base + 4 * (0xa9fe & 0x3ff), PUT_SCRAP_PATCH_SPACE);
2267
2268		// Patch GetScrap() for clipboard exchange with host OS
2269		uint32 get_scrap = find_rom_trap(0xa9fd); // GetScrap()
#	Line 2237 \| Line 2272 \| static bool patch_68k(void)
2272		*wp++ = htons(M68K_JMP);
2273		*wp++ = htons((ROM_BASE + get_scrap) >> 16);
2274		*wp++ = htons((ROM_BASE + get_scrap) & 0xffff);
2275	<	lp = (uint32 *)(ROMBaseHost + 0x22);
2276	<	lp = (uint32 )(ROMBaseHost + ntohl(lp));
2242	<	lp[0xa9fd & 0x3ff] = htonl(GET_SCRAP_PATCH_SPACE);
2275	>	base = ROM_BASE + ReadMacInt32(ROM_BASE + 0x22);
2276	>	WriteMacInt32(base + 4 * (0xa9fd & 0x3ff), GET_SCRAP_PATCH_SPACE);
2277
2278		// Patch SynchIdleTime()
2279		if (PrefsFindBool("idlewait")) {
#	Line 2306 \| Line 2340 \| void InstallDrivers(void)
2340		SheepArray<SIZEOF_IOParam> pb_var;
2341		const uintptr pb = pb_var.addr();
2342
2343	+	#if DISABLE_SCSI
2344	+	// Setup fake SCSI Globals
2345	+	r.d[0] = 0x1000;
2346	+	Execute68kTrap(0xa71e, &r); // NewPtrSysClear()
2347	+	uint32 scsi_globals = r.a[0];
2348	+	D(bug("Fake SCSI globals at %08lx\n", scsi_globals));
2349	+	WriteMacInt32(0xc0c, scsi_globals); // Set SCSIGlobals
2350	+	#endif
2351	+
2352		// Install floppy driver
2353		if (ROMType == ROMTYPE_NEWWORLD \|\| ROMType == ROMTYPE_GOSSAMER) {
2354
#	Line 2320 \| Line 2363 \| void InstallDrivers(void)
2363		WriteMacInt16(dce + dCtlFlags, SonyDriverFlags);
2364		}
2365
2323	–	#if DISABLE_SCSI && HAVE_SIGSEGV_SKIP_INSTRUCTION
2324	–	// Fake SCSIGlobals
2325	–	WriteMacInt32(0xc0c, SheepMem::ZeroPage());
2326	–	#endif
2327	–
2366		// Open .Sony driver
2367		SheepString sony_str("\005.Sony");
2368		WriteMacInt8(pb + ioPermssn, 0);

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Comparing SheepShaver/src/rom_patches.cpp (file contents): Revision 1.37 by gbeauche, 2004-12-12T18:45:44Z vs. Revision 1.42 by gbeauche, 2005-12-12T20:46:31Z

Diff Legend

Comparing SheepShaver/src/rom_patches.cpp (file contents):
Revision 1.37 by gbeauche, 2004-12-12T18:45:44Z vs.
Revision 1.42 by gbeauche, 2005-12-12T20:46:31Z