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disable power management for now (opcode fe0f)

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This commit is contained in:
gbeauche 2004-12-16 22:59:38 +00:00
parent 873377726b
commit dfa16d9686
1 changed files with 39 additions and 1 deletions
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40
SheepShaver/src/rom_patches.cpp
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@ -1085,7 +1085,7 @@ static bool patch_68k_emul(void)
*lp++ = htonl(0x48000000 + 0x36fb00 - base - 8); // b 0x36fb00 (Reset/FC1E opcode)
*lp++ = htonl(0x48000000 + 0x36fc00 - base - 12); // FE0A opcode
*lp++ = htonl(POWERPC_ILLEGAL); // Interrupt
*lp++ = htonl(POWERPC_ILLEGAL); // ?
*lp++ = htonl(0x48000000 + 0x36fd00 - base - 20); // FE0F opcode
*lp++ = htonl(POWERPC_ILLEGAL);
*lp++ = htonl(POWERPC_ILLEGAL);
*lp++ = htonl(POWERPC_ILLEGAL);
@ -1254,6 +1254,36 @@ static bool patch_68k_emul(void)
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020
*lp = htonl(0x4e800020); // blr
// Extra routine for FE0F opcode (power management)
lp = (uint32 *)(ROMBaseHost + 0x36fd00);
*lp++ = htonl(0x7c2903a6); // mtctr r1
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST
*lp++ = htonl(0x38210001); // addi r1,r1,1
*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA
*lp++ = htonl(0x90c10018); // stw r6,0x18(r1)
*lp++ = htonl(0x7cc902a6); // mfctr r6
*lp++ = htonl(0x90c10004); // stw r6,$0004(r1)
*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1)
*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6)
*lp++ = htonl(0x91060144); // stw r8,$0144(r6)
*lp++ = htonl(0x9126014c); // stw r9,$014c(r6)
*lp++ = htonl(0x91460154); // stw r10,$0154(r6)
*lp++ = htonl(0x9166015c); // stw r11,$015c(r6)
*lp++ = htonl(0x91860164); // stw r12,$0164(r6)
*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6)
*lp++ = htonl(0x7da00026); // mfcr r13
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1)
*lp++ = htonl(0x7d8802a6); // mflr r12
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000
*lp++ = htonl(0x81410604); // lwz r10,0x0604(r1)
*lp++ = htonl(0x7d4803a6); // mtlr r10
*lp++ = htonl(0x7d8a6378); // mr r10,r12
*lp++ = htonl(0x3d600002); // lis r11,0x0002
*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR)
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020
*lp = htonl(0x4e800020); // blr
// Patch DR emulator to jump to right address when an interrupt occurs
lp = (uint32 *)(ROMBaseHost + 0x370000);
while (lp < (uint32 *)(ROMBaseHost + 0x380000)) {
@ -1382,6 +1412,14 @@ static bool patch_nanokernel(void)
*lp++ = htonl(POWERPC_NOP);
*lp = htonl(POWERPC_NOP);
// Disable suspend (FE0F opcode)
// TODO: really suspend SheepShaver
static const uint8 suspend_dat[] = {0x7c, 0x88, 0x68, 0x39, 0x41, 0x9d};
if ((base = find_rom_data(0x315000, 0x316000, suspend_dat, sizeof(suspend_dat))) == 0) return false;
D(bug("suspend %08lx\n", base));
lp = (uint32 *)(ROMBaseHost + base + 8);
*lp = htonl((ntohl(*lp) & 0xffff) | 0x48000000); // bgt -> b
// Patch trap return routine
static const uint8 trap_return_dat[] = {0x80, 0xc1, 0x00, 0x18, 0x80, 0x21, 0x00, 0x04, 0x4c, 0x00, 0x00, 0x64};
if ((base = find_rom_data(0x312000, 0x320000, trap_return_dat, sizeof(trap_return_dat))) == 0) return false;