[ViewVC] Diff of: cebix/SheepShaver/src/kpx_cpu/sheepshaver

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.44 by gbeauche, 2004-06-05T07:09:38Z vs.
Revision 1.56 by gbeauche, 2005-01-30T21:12:07Z

#	Line 42 \| Line 42
42
43		#include <stdio.h>
44		#include <stdlib.h>
45	+	#ifdef HAVE_MALLOC_H
46	+	#include <malloc.h>
47	+	#endif
48	+
49	+	#ifdef USE_SDL_VIDEO
50	+	#include <SDL_events.h>
51	+	#endif
52
53		#if ENABLE_MON
54		#include "mon.h"
#	Line 101 \| Line 108 \| const uint32 POWERPC_EXEC_RETURN = POWER
108		// Interrupts in native mode?
109		#define INTERRUPTS_IN_NATIVE_MODE 1
110
104	–	// Enable native EMUL_OPs to be run without a mode switch
105	–	#define ENABLE_NATIVE_EMUL_OP 1
106	–
111		// Pointer to Kernel Data
112	<	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
112	>	static KernelData * kernel_data;
113
114		// SIGSEGV handler
115	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
115	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
116
117		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
118		// Special trampolines for EmulOp and NativeOp
#	Line 138 \| Line 142 \| class sheepshaver_cpu
142		void init_decoder();
143		void execute_sheep(uint32 opcode);
144
141	–	// Filter out EMUL_OP routines that only call native code
142	–	bool filter_execute_emul_op(uint32 emul_op);
143	–
144	–	// "Native" EMUL_OP routines
145	–	void execute_emul_op_microseconds();
146	–	void execute_emul_op_idle_time_1();
147	–	void execute_emul_op_idle_time_2();
148	–
145		// CPU context to preserve on interrupt
146		class interrupt_context {
147		uint32 gpr[32];
148	+	double fpr[32];
149		uint32 pc;
150		uint32 lr;
151		uint32 ctr;
152		uint32 cr;
153		uint32 xer;
154	+	uint32 fpscr;
155		sheepshaver_cpu *cpu;
156		const char *where;
157		public:
#	Line 187 \| Line 185 \| public:
185		// Execute MacOS/PPC code
186		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
187
188	+	#if PPC_ENABLE_JIT
189		// Compile one instruction
190		virtual int compile1(codegen_context_t & cg_context);
191	<
191	>	#endif
192		// Resource manager thunk
193		void get_resource(uint32 old_get_resource);
194
#	Line 199 \| Line 198 \| public:
198
199		// Make sure the SIGSEGV handler can access CPU registers
200		friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
201	+
202	+	// Memory allocator returning areas aligned on 16-byte boundaries
203	+	void *operator new(size_t size);
204	+	void operator delete(void *p);
205		};
206
207		// Memory allocator returning areas aligned on 16-byte boundaries
208	<	void *operator new(size_t size)
208	>	void *sheepshaver_cpu::operator new(size_t size)
209		{
210		void *p;
211
#	Line 221 \| Line 224 \| *void operator new(size_t size)**
224		return p;
225		}
226
227	<	void operator delete(void *p)
227	>	void sheepshaver_cpu::operator delete(void *p)
228		{
229		#if defined(HAVE_MEMALIGN) \|\| defined(HAVE_VALLOC)
230		#if defined(__GLIBC__)
#	Line 270 \| Line 273 \| typedef bit_field< 19, 19 > FN_field;
273		typedef bit_field< 20, 25 > NATIVE_OP_field;
274		typedef bit_field< 26, 31 > EMUL_OP_field;
275
273	–	// "Native" EMUL_OP routines
274	–	#define GPR_A(REG) gpr(16 + (REG))
275	–	#define GPR_D(REG) gpr( 8 + (REG))
276	–
277	–	void sheepshaver_cpu::execute_emul_op_microseconds()
278	–	{
279	–	Microseconds(GPR_A(0), GPR_D(0));
280	–	}
281	–
282	–	void sheepshaver_cpu::execute_emul_op_idle_time_1()
283	–	{
284	–	// Sleep if no events pending
285	–	if (ReadMacInt32(0x14c) == 0)
286	–	Delay_usec(16667);
287	–	GPR_A(0) = ReadMacInt32(0x2b6);
288	–	}
289	–
290	–	void sheepshaver_cpu::execute_emul_op_idle_time_2()
291	–	{
292	–	// Sleep if no events pending
293	–	if (ReadMacInt32(0x14c) == 0)
294	–	Delay_usec(16667);
295	–	GPR_D(0) = (uint32)-2;
296	–	}
297	–
298	–	// Filter out EMUL_OP routines that only call native code
299	–	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
300	–	{
301	–	switch (emul_op) {
302	–	case OP_MICROSECONDS:
303	–	execute_emul_op_microseconds();
304	–	return true;
305	–	case OP_IDLE_TIME:
306	–	execute_emul_op_idle_time_1();
307	–	return true;
308	–	case OP_IDLE_TIME_2:
309	–	execute_emul_op_idle_time_2();
310	–	return true;
311	–	}
312	–	return false;
313	–	}
314	–
276		// Execute EMUL_OP routine
277		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
278		{
318	–	#if ENABLE_NATIVE_EMUL_OP
319	–	// First, filter out EMUL_OPs that can be executed without a mode switch
320	–	if (filter_execute_emul_op(emul_op))
321	–	return;
322	–	#endif
323	–
279		M68kRegisters r68;
280		WriteMacInt32(XLM_68K_R25, gpr(25));
281		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 373 \| Line 328 \| void sheepshaver_cpu::execute_sheep(uint
328		}
329
330		// Compile one instruction
331	+	#if PPC_ENABLE_JIT
332		int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
333		{
378	–	#if PPC_ENABLE_JIT
334		const instr_info_t *ii = cg_context.instr_info;
335		if (ii->mnemo != PPC_I(SHEEP))
336		return COMPILE_FAILURE;
#	Line 446 \| Line 401 \| int sheepshaver_cpu::compile1(codegen_co
401		status = COMPILE_CODE_OK;
402		break;
403		#endif
449	–	case NATIVE_DISABLE_INTERRUPT:
450	–	dg.gen_invoke(DisableInterrupt);
451	–	status = COMPILE_CODE_OK;
452	–	break;
453	–	case NATIVE_ENABLE_INTERRUPT:
454	–	dg.gen_invoke(EnableInterrupt);
455	–	status = COMPILE_CODE_OK;
456	–	break;
404		case NATIVE_BITBLT:
405		dg.gen_load_T0_GPR(3);
406		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
#	Line 510 \| Line 457 \| int sheepshaver_cpu::compile1(codegen_co
457
458		default: { // EMUL_OP
459		uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
513	–	#if ENABLE_NATIVE_EMUL_OP
514	–	typedef void (*emul_op_func_t)(dyngen_cpu_base);
515	–	emul_op_func_t emul_op_func = 0;
516	–	switch (emul_op) {
517	–	case OP_MICROSECONDS:
518	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
519	–	break;
520	–	case OP_IDLE_TIME:
521	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
522	–	break;
523	–	case OP_IDLE_TIME_2:
524	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
525	–	break;
526	–	}
527	–	if (emul_op_func) {
528	–	dg.gen_invoke_CPU(emul_op_func);
529	–	cg_context.done_compile = false;
530	–	status = COMPILE_CODE_OK;
531	–	break;
532	–	}
533	–	#endif
460		#if PPC_REENTRANT_JIT
461		// Try to execute EmulOp trampoline
462		dg.gen_set_PC_im(cg_context.pc + 4);
#	Line 550 \| Line 476 \| int sheepshaver_cpu::compile1(codegen_co
476		}
477		}
478		return status;
553	–	#endif
554	–	return COMPILE_FAILURE;
479		}
480	+	#endif
481
482		// CPU context to preserve on interrupt
483		sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu _cpu, const char _where)
#	Line 563 \| Line 488 \| sheepshaver_cpu::interrupt_context::inte
488
489		// Save interrupt context
490		memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
491	+	memcpy(&fpr[0], &cpu->fpr(0), sizeof(fpr));
492		pc = cpu->pc();
493		lr = cpu->lr();
494		ctr = cpu->ctr();
495		cr = cpu->get_cr();
496		xer = cpu->get_xer();
497	+	fpscr = cpu->fpscr();
498		#endif
499		}
500
#	Line 581 \| Line 508 \| sheepshaver_cpu::interrupt_context::~int
508		if (gpr[i] != cpu->gpr(i))
509		printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
510		}
511	+	if (memcmp(&fpr[0], &cpu->fpr(0), sizeof(fpr)) != 0) {
512	+	printf("FATAL: %s: interrupt clobbers registers\n", where);
513	+	for (int i = 0; i < 32; i++)
514	+	if (fpr[i] != cpu->fpr(i))
515	+	printf(" r%d: %f -> %f\n", i, fpr[i], cpu->fpr(i));
516	+	}
517		if (pc != cpu->pc())
518		printf("FATAL: %s: interrupt clobbers PC\n", where);
519		if (lr != cpu->lr())
#	Line 591 \| Line 524 \| sheepshaver_cpu::interrupt_context::~int
524		printf("FATAL: %s: interrupt clobbers CR\n", where);
525		if (xer != cpu->get_xer())
526		printf("FATAL: %s: interrupt clobbers XER\n", where);
527	+	if (fpscr != cpu->fpscr())
528	+	printf("FATAL: %s: interrupt clobbers FPSCR\n", where);
529		#endif
530		}
531
#	Line 884 \| Line 819 \| static void dump_log(void)
819		* Initialize CPU emulation
820		*/
821
822	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
822	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
823		{
824		#if ENABLE_VOSF
825		// Handle screen fault
#	Line 896 \| Line 831 \| static sigsegv_return_t sigsegv_handler(
831		const uintptr addr = (uintptr)fault_address;
832		#if HAVE_SIGSEGV_SKIP_INSTRUCTION
833		// Ignore writes to ROM
834	<	if ((addr - ROM_BASE) < ROM_SIZE)
834	>	if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE)
835		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
836
837		// Get program counter of target CPU
#	Line 956 \| Line 891 \| static sigsegv_return_t sigsegv_handler(
891
892		void init_emul_ppc(void)
893		{
894	+	// Get pointer to KernelData in host address space
895	+	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
896	+
897		// Initialize main CPU emulator
898		ppc_cpu = new sheepshaver_cpu();
899		ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
900		ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
901		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
902
965	–	// Install the handler for SIGSEGV
966	–	sigsegv_install_handler(sigsegv_handler);
967	–
903		#if ENABLE_MON
904		// Install "regs" command in cxmon
905		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
#	Line 1067 \| Line 1002 \| void TriggerInterrupt(void)
1002
1003		void sheepshaver_cpu::handle_interrupt(void)
1004		{
1005	<	// Do nothing if interrupts are disabled
1006	<	if ((int32 )XLM_IRQ_NEST > 0)
1007	<	return;
1005	>	#ifdef USE_SDL_VIDEO
1006	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1007	>	SDL_PumpEvents();
1008	>	#endif
1009
1010	<	// Do nothing if there is no interrupt pending
1011	<	if (InterruptFlags == 0)
1010	>	// Do nothing if interrupts are disabled
1011	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1012		return;
1013
1014		// Current interrupt nest level
#	Line 1128 \| Line 1064 \| void sheepshaver_cpu::handle_interrupt(v
1064		M68kRegisters r;
1065		uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level
1066		WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1
1067	<	static const uint8 proc[] = {
1067	>	static const uint8 proc_template[] = {
1068		0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word)
1069		0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address)
1070		0x40, 0xe7, // move sr,-(sp) (saved SR)
#	Line 1136 \| Line 1072 \| void sheepshaver_cpu::handle_interrupt(v
1072		0x4e, 0xd0, // jmp (a0)
1073		M68K_RTS >> 8, M68K_RTS & 0xff // @1
1074		};
1075	<	Execute68k((uint32)proc, &r);
1075	>	BUILD_SHEEPSHAVER_PROCEDURE(proc);
1076	>	Execute68k(proc, &r);
1077		WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level
1078		#else
1079		// Only update cursor
#	Line 1185 \| Line 1122 \| void sheepshaver_cpu::execute_native_op(
1122		VideoVBL();
1123		break;
1124		case NATIVE_VIDEO_DO_DRIVER_IO:
1125	<	gpr(3) = (int32)(int16)VideoDoDriverIO((void )gpr(3), (void )gpr(4),
1189	<	(void *)gpr(5), gpr(6), gpr(7));
1125	>	gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1126		break;
1191	–	#ifdef WORDS_BIGENDIAN
1127		case NATIVE_ETHER_IRQ:
1128		EtherIRQ();
1129		break;
#	Line 1210 \| Line 1145 \| void sheepshaver_cpu::execute_native_op(
1145		case NATIVE_ETHER_RSRV:
1146		gpr(3) = ether_rsrv((queue_t *)gpr(3));
1147		break;
1213	–	#else
1214	–	case NATIVE_ETHER_INIT:
1215	–	// FIXME: needs more complicated thunks
1216	–	gpr(3) = false;
1217	–	break;
1218	–	#endif
1148		case NATIVE_SYNC_HOOK:
1149		gpr(3) = NQD_sync_hook(gpr(3));
1150		break;
#	Line 1270 \| Line 1199 \| void sheepshaver_cpu::execute_native_op(
1199		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1200		break;
1201		}
1273	–	case NATIVE_DISABLE_INTERRUPT:
1274	–	DisableInterrupt();
1275	–	break;
1276	–	case NATIVE_ENABLE_INTERRUPT:
1277	–	EnableInterrupt();
1278	–	break;
1202		case NATIVE_MAKE_EXECUTABLE:
1203	<	MakeExecutable(0, (void *)gpr(4), gpr(5));
1203	>	MakeExecutable(0, gpr(4), gpr(5));
1204		break;
1205		case NATIVE_CHECK_LOAD_INVOC:
1206		check_load_invoc(gpr(3), gpr(4), gpr(5));

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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.44 by gbeauche, 2004-06-05T07:09:38Z vs. Revision 1.56 by gbeauche, 2005-01-30T21:12:07Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.44 by gbeauche, 2004-06-05T07:09:38Z vs.
Revision 1.56 by gbeauche, 2005-01-30T21:12:07Z