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#include <stdio.h> |
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#include <stdlib.h> |
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#ifdef HAVE_MALLOC_H |
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#include <malloc.h> |
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#endif |
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#ifdef USE_SDL_VIDEO |
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#include <SDL_events.h> |
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#define INTERRUPTS_IN_NATIVE_MODE 1 |
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// Pointer to Kernel Data |
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< |
static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE; |
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static KernelData * kernel_data; |
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// SIGSEGV handler |
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sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t); |
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// CPU context to preserve on interrupt |
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class interrupt_context { |
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uint32 gpr[32]; |
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double fpr[32]; |
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uint32 pc; |
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uint32 lr; |
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uint32 ctr; |
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uint32 cr; |
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uint32 xer; |
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uint32 fpscr; |
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sheepshaver_cpu *cpu; |
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const char *where; |
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public: |
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// Execute MacOS/PPC code |
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uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args); |
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#if PPC_ENABLE_JIT |
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// Compile one instruction |
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virtual int compile1(codegen_context_t & cg_context); |
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#endif |
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// Resource manager thunk |
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void get_resource(uint32 old_get_resource); |
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// Make sure the SIGSEGV handler can access CPU registers |
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friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t); |
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|
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// Memory allocator returning areas aligned on 16-byte boundaries |
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void *operator new(size_t size); |
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void operator delete(void *p); |
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}; |
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// Memory allocator returning areas aligned on 16-byte boundaries |
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void *operator new(size_t size) |
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void *sheepshaver_cpu::operator new(size_t size) |
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{ |
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void *p; |
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return p; |
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} |
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void operator delete(void *p) |
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void sheepshaver_cpu::operator delete(void *p) |
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{ |
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#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC) |
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#if defined(__GLIBC__) |
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} |
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// Compile one instruction |
331 |
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#if PPC_ENABLE_JIT |
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int sheepshaver_cpu::compile1(codegen_context_t & cg_context) |
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{ |
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#if PPC_ENABLE_JIT |
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const instr_info_t *ii = cg_context.instr_info; |
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if (ii->mnemo != PPC_I(SHEEP)) |
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return COMPILE_FAILURE; |
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} |
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} |
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return status; |
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#endif |
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return COMPILE_FAILURE; |
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} |
480 |
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#endif |
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|
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// CPU context to preserve on interrupt |
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sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where) |
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|
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// Save interrupt context |
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memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr)); |
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memcpy(&fpr[0], &cpu->fpr(0), sizeof(fpr)); |
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pc = cpu->pc(); |
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lr = cpu->lr(); |
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ctr = cpu->ctr(); |
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cr = cpu->get_cr(); |
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xer = cpu->get_xer(); |
497 |
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fpscr = cpu->fpscr(); |
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#endif |
499 |
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} |
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if (gpr[i] != cpu->gpr(i)) |
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printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i)); |
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} |
511 |
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if (memcmp(&fpr[0], &cpu->fpr(0), sizeof(fpr)) != 0) { |
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printf("FATAL: %s: interrupt clobbers registers\n", where); |
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for (int i = 0; i < 32; i++) |
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if (fpr[i] != cpu->fpr(i)) |
515 |
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printf(" r%d: %f -> %f\n", i, fpr[i], cpu->fpr(i)); |
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} |
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if (pc != cpu->pc()) |
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printf("FATAL: %s: interrupt clobbers PC\n", where); |
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if (lr != cpu->lr()) |
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printf("FATAL: %s: interrupt clobbers CR\n", where); |
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if (xer != cpu->get_xer()) |
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printf("FATAL: %s: interrupt clobbers XER\n", where); |
527 |
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if (fpscr != cpu->fpscr()) |
528 |
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printf("FATAL: %s: interrupt clobbers FPSCR\n", where); |
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#endif |
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} |
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const uintptr addr = (uintptr)fault_address; |
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#if HAVE_SIGSEGV_SKIP_INSTRUCTION |
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// Ignore writes to ROM |
834 |
< |
if ((addr - ROM_BASE) < ROM_SIZE) |
834 |
> |
if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE) |
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return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
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// Get program counter of target CPU |
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|
892 |
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void init_emul_ppc(void) |
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{ |
894 |
+ |
// Get pointer to KernelData in host address space |
895 |
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kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE); |
896 |
+ |
|
897 |
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// Initialize main CPU emulator |
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ppc_cpu = new sheepshaver_cpu(); |
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ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000)); |
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M68kRegisters r; |
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uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level |
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WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1 |
1067 |
< |
static const uint8 proc[] = { |
1067 |
> |
static const uint8 proc_template[] = { |
1068 |
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0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word) |
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0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address) |
1070 |
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0x40, 0xe7, // move sr,-(sp) (saved SR) |
1072 |
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0x4e, 0xd0, // jmp (a0) |
1073 |
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M68K_RTS >> 8, M68K_RTS & 0xff // @1 |
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}; |
1075 |
< |
Execute68k((uint32)proc, &r); |
1075 |
> |
BUILD_SHEEPSHAVER_PROCEDURE(proc); |
1076 |
> |
Execute68k(proc, &r); |
1077 |
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WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level |
1078 |
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#else |
1079 |
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// Only update cursor |
1122 |
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VideoVBL(); |
1123 |
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break; |
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case NATIVE_VIDEO_DO_DRIVER_IO: |
1125 |
< |
gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4), |
1103 |
< |
(void *)gpr(5), gpr(6), gpr(7)); |
1125 |
> |
gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7)); |
1126 |
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break; |
1105 |
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#ifdef WORDS_BIGENDIAN |
1127 |
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case NATIVE_ETHER_IRQ: |
1128 |
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EtherIRQ(); |
1129 |
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break; |
1145 |
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case NATIVE_ETHER_RSRV: |
1146 |
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gpr(3) = ether_rsrv((queue_t *)gpr(3)); |
1147 |
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break; |
1127 |
– |
#else |
1128 |
– |
case NATIVE_ETHER_INIT: |
1129 |
– |
// FIXME: needs more complicated thunks |
1130 |
– |
gpr(3) = false; |
1131 |
– |
break; |
1132 |
– |
#endif |
1148 |
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case NATIVE_SYNC_HOOK: |
1149 |
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gpr(3) = NQD_sync_hook(gpr(3)); |
1150 |
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break; |
1200 |
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break; |
1201 |
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} |
1202 |
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case NATIVE_MAKE_EXECUTABLE: |
1203 |
< |
MakeExecutable(0, (void *)gpr(4), gpr(5)); |
1203 |
> |
MakeExecutable(0, gpr(4), gpr(5)); |
1204 |
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break; |
1205 |
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case NATIVE_CHECK_LOAD_INVOC: |
1206 |
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check_load_invoc(gpr(3), gpr(4), gpr(5)); |