[pcsx_rearmed.git] / libpcsxcore / lightrec / plugin.c

#include <lightrec.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <assert.h>

#if P_HAVE_MMAP
#include <sys/mman.h>
#endif

#include "../cdrom.h"
#include "../gpu.h"
#include "../gte.h"
#include "../mdec.h"
#include "../psxdma.h"
#include "../psxhw.h"
#include "../psxmem.h"
#include "../r3000a.h"
#include "../psxinterpreter.h"
#include "../new_dynarec/events.h"

#include "../frontend/main.h"

#include "mem.h"
#include "plugin.h"

#if (defined(__arm__) || defined(__aarch64__)) && !defined(ALLOW_LIGHTREC_ON_ARM)
#error "Lightrec should not be used on ARM (please specify DYNAREC=ari64 to make)"
#endif

#define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0)

#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#	define LE32TOH(x)	__builtin_bswap32(x)
#	define HTOLE32(x)	__builtin_bswap32(x)
#	define LE16TOH(x)	__builtin_bswap16(x)
#	define HTOLE16(x)	__builtin_bswap16(x)
#else
#	define LE32TOH(x)	(x)
#	define HTOLE32(x)	(x)
#	define LE16TOH(x)	(x)
#	define HTOLE16(x)	(x)
#endif

#ifdef __GNUC__
#	define likely(x)       __builtin_expect(!!(x),1)
#	define unlikely(x)     __builtin_expect(!!(x),0)
#else
#	define likely(x)       (x)
#	define unlikely(x)     (x)
#endif

psxRegisters psxRegs;
Rcnt rcnts[4];

void* code_buffer;

static struct lightrec_state *lightrec_state;

static char *name = "retroarch.exe";

static bool use_lightrec_interpreter;
static bool use_pcsx_interpreter;
static bool block_stepping;

enum my_cp2_opcodes {
	OP_CP2_RTPS		= 0x01,
	OP_CP2_NCLIP		= 0x06,
	OP_CP2_OP		= 0x0c,
	OP_CP2_DPCS		= 0x10,
	OP_CP2_INTPL		= 0x11,
	OP_CP2_MVMVA		= 0x12,
	OP_CP2_NCDS		= 0x13,
	OP_CP2_CDP		= 0x14,
	OP_CP2_NCDT		= 0x16,
	OP_CP2_NCCS		= 0x1b,
	OP_CP2_CC		= 0x1c,
	OP_CP2_NCS		= 0x1e,
	OP_CP2_NCT		= 0x20,
	OP_CP2_SQR		= 0x28,
	OP_CP2_DCPL		= 0x29,
	OP_CP2_DPCT		= 0x2a,
	OP_CP2_AVSZ3		= 0x2d,
	OP_CP2_AVSZ4		= 0x2e,
	OP_CP2_RTPT		= 0x30,
	OP_CP2_GPF		= 0x3d,
	OP_CP2_GPL		= 0x3e,
	OP_CP2_NCCT		= 0x3f,
};

static void (*cp2_ops[])(struct psxCP2Regs *) = {
	[OP_CP2_RTPS] = gteRTPS,
	[OP_CP2_RTPS] = gteRTPS,
	[OP_CP2_NCLIP] = gteNCLIP,
	[OP_CP2_OP] = gteOP,
	[OP_CP2_DPCS] = gteDPCS,
	[OP_CP2_INTPL] = gteINTPL,
	[OP_CP2_MVMVA] = gteMVMVA,
	[OP_CP2_NCDS] = gteNCDS,
	[OP_CP2_CDP] = gteCDP,
	[OP_CP2_NCDT] = gteNCDT,
	[OP_CP2_NCCS] = gteNCCS,
	[OP_CP2_CC] = gteCC,
	[OP_CP2_NCS] = gteNCS,
	[OP_CP2_NCT] = gteNCT,
	[OP_CP2_SQR] = gteSQR,
	[OP_CP2_DCPL] = gteDCPL,
	[OP_CP2_DPCT] = gteDPCT,
	[OP_CP2_AVSZ3] = gteAVSZ3,
	[OP_CP2_AVSZ4] = gteAVSZ4,
	[OP_CP2_RTPT] = gteRTPT,
	[OP_CP2_GPF] = gteGPF,
	[OP_CP2_GPL] = gteGPL,
	[OP_CP2_NCCT] = gteNCCT,
};

static char cache_buf[64 * 1024];

static void cop2_op(struct lightrec_state *state, u32 func)
{
	struct lightrec_registers *regs = lightrec_get_registers(state);

	psxRegs.code = func;

	if (unlikely(!cp2_ops[func & 0x3f])) {
		fprintf(stderr, "Invalid CP2 function %u\n", func);
	} else {
		/* This works because regs->cp2c comes right after regs->cp2d,
		 * so it can be cast to a pcsxCP2Regs pointer. */
		cp2_ops[func & 0x3f]((psxCP2Regs *) regs->cp2d);
	}
}

static bool has_interrupt(void)
{
	struct lightrec_registers *regs = lightrec_get_registers(lightrec_state);

	return ((psxHu32(0x1070) & psxHu32(0x1074)) &&
		(regs->cp0[12] & 0x401) == 0x401) ||
		(regs->cp0[12] & regs->cp0[13] & 0x0300);
}

static void lightrec_tansition_to_pcsx(struct lightrec_state *state)
{
	psxRegs.cycle += lightrec_current_cycle_count(state) / 1024;
	lightrec_reset_cycle_count(state, 0);
}

static void lightrec_tansition_from_pcsx(struct lightrec_state *state)
{
	s32 cycles_left = next_interupt - psxRegs.cycle;

	if (block_stepping || cycles_left <= 0 || has_interrupt())
		lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT);
	else {
		lightrec_set_target_cycle_count(state, cycles_left * 1024);
	}
}

static void hw_write_byte(struct lightrec_state *state,
			  u32 op, void *host, u32 mem, u8 val)
{
	lightrec_tansition_to_pcsx(state);

	psxHwWrite8(mem, val);

	lightrec_tansition_from_pcsx(state);
}

static void hw_write_half(struct lightrec_state *state,
			  u32 op, void *host, u32 mem, u16 val)
{
	lightrec_tansition_to_pcsx(state);

	psxHwWrite16(mem, val);

	lightrec_tansition_from_pcsx(state);
}

static void hw_write_word(struct lightrec_state *state,
			  u32 op, void *host, u32 mem, u32 val)
{
	lightrec_tansition_to_pcsx(state);

	psxHwWrite32(mem, val);

	lightrec_tansition_from_pcsx(state);
}

static u8 hw_read_byte(struct lightrec_state *state, u32 op, void *host, u32 mem)
{
	u8 val;

	lightrec_tansition_to_pcsx(state);

	val = psxHwRead8(mem);

	lightrec_tansition_from_pcsx(state);

	return val;
}

static u16 hw_read_half(struct lightrec_state *state,
			u32 op, void *host, u32 mem)
{
	u16 val;

	lightrec_tansition_to_pcsx(state);

	val = psxHwRead16(mem);

	lightrec_tansition_from_pcsx(state);

	return val;
}

static u32 hw_read_word(struct lightrec_state *state,
			u32 op, void *host, u32 mem)
{
	u32 val;

	lightrec_tansition_to_pcsx(state);

	val = psxHwRead32(mem);

	lightrec_tansition_from_pcsx(state);

	return val;
}

static struct lightrec_mem_map_ops hw_regs_ops = {
	.sb = hw_write_byte,
	.sh = hw_write_half,
	.sw = hw_write_word,
	.lb = hw_read_byte,
	.lh = hw_read_half,
	.lw = hw_read_word,
};

static u32 cache_ctrl;

static void cache_ctrl_write_word(struct lightrec_state *state,
				  u32 op, void *host, u32 mem, u32 val)
{
	cache_ctrl = val;
}

static u32 cache_ctrl_read_word(struct lightrec_state *state,
				u32 op, void *host, u32 mem)
{
	return cache_ctrl;
}

static struct lightrec_mem_map_ops cache_ctrl_ops = {
	.sw = cache_ctrl_write_word,
	.lw = cache_ctrl_read_word,
};

static struct lightrec_mem_map lightrec_map[] = {
	[PSX_MAP_KERNEL_USER_RAM] = {
		/* Kernel and user memory */
		.pc = 0x00000000,
		.length = 0x200000,
	},
	[PSX_MAP_BIOS] = {
		/* BIOS */
		.pc = 0x1fc00000,
		.length = 0x80000,
	},
	[PSX_MAP_SCRATCH_PAD] = {
		/* Scratch pad */
		.pc = 0x1f800000,
		.length = 0x400,
	},
	[PSX_MAP_PARALLEL_PORT] = {
		/* Parallel port */
		.pc = 0x1f000000,
		.length = 0x10000,
	},
	[PSX_MAP_HW_REGISTERS] = {
		/* Hardware registers */
		.pc = 0x1f801000,
		.length = 0x8000,
		.ops = &hw_regs_ops,
	},
	[PSX_MAP_CACHE_CONTROL] = {
		/* Cache control */
		.pc = 0x5ffe0130,
		.length = 4,
		.ops = &cache_ctrl_ops,
	},

	/* Mirrors of the kernel/user memory */
	[PSX_MAP_MIRROR1] = {
		.pc = 0x00200000,
		.length = 0x200000,
		.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	},
	[PSX_MAP_MIRROR2] = {
		.pc = 0x00400000,
		.length = 0x200000,
		.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	},
	[PSX_MAP_MIRROR3] = {
		.pc = 0x00600000,
		.length = 0x200000,
		.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	},

	/* Mirror of the parallel port. Only used by the PS2/PS3 BIOS */
	[PSX_MAP_PPORT_MIRROR] = {
		.pc = 0x1fa00000,
		.length = 0x10000,
		.mirror_of = &lightrec_map[PSX_MAP_PARALLEL_PORT],
	},

	/* Code buffer */
	[PSX_MAP_CODE_BUFFER] = {
		.length = CODE_BUFFER_SIZE,
	},
};

static void lightrec_enable_ram(struct lightrec_state *state, bool enable)
{
	if (enable)
		memcpy(psxM, cache_buf, sizeof(cache_buf));
	else
		memcpy(cache_buf, psxM, sizeof(cache_buf));
}

static bool lightrec_can_hw_direct(u32 kaddr, bool is_write, u8 size)
{
	switch (size) {
	case 8:
		switch (kaddr) {
		case 0x1f801040:
		case 0x1f801050:
		case 0x1f801800:
		case 0x1f801801:
		case 0x1f801802:
		case 0x1f801803:
			return false;
		default:
			return true;
		}
	case 16:
		switch (kaddr) {
		case 0x1f801040:
		case 0x1f801044:
		case 0x1f801048:
		case 0x1f80104a:
		case 0x1f80104e:
		case 0x1f801050:
		case 0x1f801054:
		case 0x1f80105a:
		case 0x1f80105e:
		case 0x1f801100:
		case 0x1f801104:
		case 0x1f801108:
		case 0x1f801110:
		case 0x1f801114:
		case 0x1f801118:
		case 0x1f801120:
		case 0x1f801124:
		case 0x1f801128:
			return false;
		case 0x1f801070:
		case 0x1f801074:
			return !is_write;
		default:
			return kaddr < 0x1f801c00 || kaddr >= 0x1f801e00;
		}
	default:
		switch (kaddr) {
		case 0x1f801040:
		case 0x1f801050:
		case 0x1f801100:
		case 0x1f801104:
		case 0x1f801108:
		case 0x1f801110:
		case 0x1f801114:
		case 0x1f801118:
		case 0x1f801120:
		case 0x1f801124:
		case 0x1f801128:
		case 0x1f801810:
		case 0x1f801814:
		case 0x1f801820:
		case 0x1f801824:
			return false;
		case 0x1f801070:
		case 0x1f801074:
		case 0x1f801088:
		case 0x1f801098:
		case 0x1f8010a8:
		case 0x1f8010b8:
		case 0x1f8010c8:
		case 0x1f8010e8:
		case 0x1f8010f4:
			return !is_write;
		default:
			return !is_write || kaddr < 0x1f801c00 || kaddr >= 0x1f801e00;
		}
	}
}

#if defined(HW_DOL) || defined(HW_RVL)
static void lightrec_code_inv(void *ptr, uint32_t len)
{
	extern void DCFlushRange(void *ptr, u32 len);
	extern void ICInvalidateRange(void *ptr, u32 len);

	DCFlushRange(ptr, len);
	ICInvalidateRange(ptr, len);
}
#elif defined(HW_WUP)
static void lightrec_code_inv(void *ptr, uint32_t len)
{
	wiiu_clear_cache(ptr, (void *)((uintptr_t)ptr + len));
}
#endif

static const struct lightrec_ops lightrec_ops = {
	.cop2_op = cop2_op,
	.enable_ram = lightrec_enable_ram,
	.hw_direct = lightrec_can_hw_direct,
#if defined(HW_DOL) || defined(HW_RVL) || defined(HW_WUP)
	.code_inv = lightrec_code_inv,
#endif
};

static int lightrec_plugin_init(void)
{
	lightrec_map[PSX_MAP_KERNEL_USER_RAM].address = psxM;
	lightrec_map[PSX_MAP_BIOS].address = psxR;
	lightrec_map[PSX_MAP_SCRATCH_PAD].address = psxH;
	lightrec_map[PSX_MAP_HW_REGISTERS].address = psxH + 0x1000;
	lightrec_map[PSX_MAP_PARALLEL_PORT].address = psxP;

	if (!LIGHTREC_CUSTOM_MAP) {
#if P_HAVE_MMAP
		code_buffer = mmap(0, CODE_BUFFER_SIZE,
				   PROT_EXEC | PROT_READ | PROT_WRITE,
				   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
		if (code_buffer == MAP_FAILED)
			return -ENOMEM;
#else
		code_buffer = malloc(CODE_BUFFER_SIZE);
		if (!code_buffer)
			return -ENOMEM;
#endif
	}

	if (LIGHTREC_CUSTOM_MAP) {
		lightrec_map[PSX_MAP_MIRROR1].address = psxM + 0x200000;
		lightrec_map[PSX_MAP_MIRROR2].address = psxM + 0x400000;
		lightrec_map[PSX_MAP_MIRROR3].address = psxM + 0x600000;
	}

	lightrec_map[PSX_MAP_CODE_BUFFER].address = code_buffer;

	use_lightrec_interpreter = !!getenv("LIGHTREC_INTERPRETER");

	lightrec_state = lightrec_init(name,
			lightrec_map, ARRAY_SIZE(lightrec_map),
			&lightrec_ops);

	// fprintf(stderr, "M=0x%lx, P=0x%lx, R=0x%lx, H=0x%lx\n",
	// 		(uintptr_t) psxM,
	// 		(uintptr_t) psxP,
	// 		(uintptr_t) psxR,
	// 		(uintptr_t) psxH);

#ifndef _WIN32
	signal(SIGPIPE, exit);
#endif
	return 0;
}

static void lightrec_plugin_execute_internal(bool block_only)
{
	struct lightrec_registers *regs;
	u32 flags, cycles_pcsx;

	regs = lightrec_get_registers(lightrec_state);
	gen_interupt((psxCP0Regs *)regs->cp0);
	cycles_pcsx = next_interupt - psxRegs.cycle;
	assert((s32)cycles_pcsx > 0);

	// step during early boot so that 0x80030000 fastboot hack works
	block_stepping = block_only;
	if (block_only)
		cycles_pcsx = 0;

	if (use_pcsx_interpreter) {
		intExecuteBlock(0);
	} else {
		u32 cycles_lightrec = cycles_pcsx * 1024;
		if (unlikely(use_lightrec_interpreter)) {
			psxRegs.pc = lightrec_run_interpreter(lightrec_state,
							      psxRegs.pc,
							      cycles_lightrec);
		} else {
			psxRegs.pc = lightrec_execute(lightrec_state,
						      psxRegs.pc, cycles_lightrec);
		}

		lightrec_tansition_to_pcsx(lightrec_state);

		flags = lightrec_exit_flags(lightrec_state);

		if (flags & LIGHTREC_EXIT_SEGFAULT) {
			fprintf(stderr, "Exiting at cycle 0x%08x\n",
				psxRegs.cycle);
			exit(1);
		}

		if (flags & LIGHTREC_EXIT_SYSCALL)
			psxException(0x20, 0, (psxCP0Regs *)regs->cp0);
	}

	if ((regs->cp0[13] & regs->cp0[12] & 0x300) && (regs->cp0[12] & 0x1)) {
		/* Handle software interrupts */
		regs->cp0[13] &= ~0x7c;
		psxException(regs->cp0[13], 0, (psxCP0Regs *)regs->cp0);
	}
}

static void lightrec_plugin_execute(void)
{
	extern int stop;

	while (!stop)
		lightrec_plugin_execute_internal(false);
}

static void lightrec_plugin_execute_block(enum blockExecCaller caller)
{
	lightrec_plugin_execute_internal(true);
}

static void lightrec_plugin_clear(u32 addr, u32 size)
{
	if (addr == 0 && size == UINT32_MAX)
		lightrec_invalidate_all(lightrec_state);
	else
		/* size * 4: PCSX uses DMA units */
		lightrec_invalidate(lightrec_state, addr, size * 4);
}

static void lightrec_plugin_sync_regs_to_pcsx(void);
static void lightrec_plugin_sync_regs_from_pcsx(void);

static void lightrec_plugin_notify(enum R3000Anote note, void *data)
{
	switch (note)
	{
	case R3000ACPU_NOTIFY_CACHE_ISOLATED:
	case R3000ACPU_NOTIFY_CACHE_UNISOLATED:
		/* not used, lightrec calls lightrec_enable_ram() instead */
		break;
	case R3000ACPU_NOTIFY_BEFORE_SAVE:
		lightrec_plugin_sync_regs_to_pcsx();
		break;
	case R3000ACPU_NOTIFY_AFTER_LOAD:
		lightrec_plugin_sync_regs_from_pcsx();
		break;
	}
}

static void lightrec_plugin_apply_config()
{
	u32 cycle_mult = Config.cycle_multiplier_override && Config.cycle_multiplier == CYCLE_MULT_DEFAULT
		? Config.cycle_multiplier_override : Config.cycle_multiplier;
	assert(cycle_mult);

	lightrec_set_cycles_per_opcode(lightrec_state, cycle_mult * 1024 / 100);
}

static void lightrec_plugin_shutdown(void)
{
	lightrec_destroy(lightrec_state);

	if (!LIGHTREC_CUSTOM_MAP) {
#if P_HAVE_MMAP
		munmap(code_buffer, CODE_BUFFER_SIZE);
#else
		free(code_buffer);
#endif
	}
}

static void lightrec_plugin_reset(void)
{
	struct lightrec_registers *regs;

	regs = lightrec_get_registers(lightrec_state);

	/* Invalidate all blocks */
	lightrec_invalidate_all(lightrec_state);

	/* Reset registers */
	memset(regs, 0, sizeof(*regs));

	regs->cp0[12] = 0x10900000; // COP0 enabled | BEV = 1 | TS = 1
	regs->cp0[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
}

static void lightrec_plugin_sync_regs_from_pcsx(void)
{
	struct lightrec_registers *regs;

	regs = lightrec_get_registers(lightrec_state);
	memcpy(regs->cp2d, &psxRegs.CP2, sizeof(regs->cp2d) + sizeof(regs->cp2c));
	memcpy(regs->cp0, &psxRegs.CP0, sizeof(regs->cp0));
	memcpy(regs->gpr, &psxRegs.GPR, sizeof(regs->gpr));

	lightrec_invalidate_all(lightrec_state);
}

static void lightrec_plugin_sync_regs_to_pcsx(void)
{
	struct lightrec_registers *regs;

	regs = lightrec_get_registers(lightrec_state);
	memcpy(&psxRegs.CP2, regs->cp2d, sizeof(regs->cp2d) + sizeof(regs->cp2c));
	memcpy(&psxRegs.CP0, regs->cp0, sizeof(regs->cp0));
	memcpy(&psxRegs.GPR, regs->gpr, sizeof(regs->gpr));
}

R3000Acpu psxRec =
{
	lightrec_plugin_init,
	lightrec_plugin_reset,
	lightrec_plugin_execute,
	lightrec_plugin_execute_block,
	lightrec_plugin_clear,
	lightrec_plugin_notify,
	lightrec_plugin_apply_config,
	lightrec_plugin_shutdown,
};
Commit	Line	Data
	1	#include <lightrec.h>
	2	#include <errno.h>
	3	#include <stdbool.h>
	4	#include <stdio.h>
	5	#include <unistd.h>
	6	#include <signal.h>
	7	#include <assert.h>
	8
	9	#if P_HAVE_MMAP
	10	#include <sys/mman.h>
	11	#endif
	12
	13	#include "../cdrom.h"
	14	#include "../gpu.h"
	15	#include "../gte.h"
	16	#include "../mdec.h"
	17	#include "../psxdma.h"
	18	#include "../psxhw.h"
	19	#include "../psxmem.h"
	20	#include "../r3000a.h"
	21	#include "../psxinterpreter.h"
	22	#include "../new_dynarec/events.h"
	23
	24	#include "../frontend/main.h"
	25
	26	#include "mem.h"
	27	#include "plugin.h"
	28
	29	#if (defined(__arm__) \|\| defined(__aarch64__)) && !defined(ALLOW_LIGHTREC_ON_ARM)
	30	#error "Lightrec should not be used on ARM (please specify DYNAREC=ari64 to make)"
	31	#endif
	32
	33	#define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0)
	34
	35	#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
	36	# define LE32TOH(x) __builtin_bswap32(x)
	37	# define HTOLE32(x) __builtin_bswap32(x)
	38	# define LE16TOH(x) __builtin_bswap16(x)
	39	# define HTOLE16(x) __builtin_bswap16(x)
	40	#else
	41	# define LE32TOH(x) (x)
	42	# define HTOLE32(x) (x)
	43	# define LE16TOH(x) (x)
	44	# define HTOLE16(x) (x)
	45	#endif
	46
	47	#ifdef __GNUC__
	48	# define likely(x) __builtin_expect(!!(x),1)
	49	# define unlikely(x) __builtin_expect(!!(x),0)
	50	#else
	51	# define likely(x) (x)
	52	# define unlikely(x) (x)
	53	#endif
	54
	55	psxRegisters psxRegs;
	56	Rcnt rcnts[4];
	57
	58	void* code_buffer;
	59
	60	static struct lightrec_state *lightrec_state;
	61
	62	static char *name = "retroarch.exe";
	63
	64	static bool use_lightrec_interpreter;
	65	static bool use_pcsx_interpreter;
	66	static bool block_stepping;
	67
	68	enum my_cp2_opcodes {
	69	OP_CP2_RTPS = 0x01,
	70	OP_CP2_NCLIP = 0x06,
	71	OP_CP2_OP = 0x0c,
	72	OP_CP2_DPCS = 0x10,
	73	OP_CP2_INTPL = 0x11,
	74	OP_CP2_MVMVA = 0x12,
	75	OP_CP2_NCDS = 0x13,
	76	OP_CP2_CDP = 0x14,
	77	OP_CP2_NCDT = 0x16,
	78	OP_CP2_NCCS = 0x1b,
	79	OP_CP2_CC = 0x1c,
	80	OP_CP2_NCS = 0x1e,
	81	OP_CP2_NCT = 0x20,
	82	OP_CP2_SQR = 0x28,
	83	OP_CP2_DCPL = 0x29,
	84	OP_CP2_DPCT = 0x2a,
	85	OP_CP2_AVSZ3 = 0x2d,
	86	OP_CP2_AVSZ4 = 0x2e,
	87	OP_CP2_RTPT = 0x30,
	88	OP_CP2_GPF = 0x3d,
	89	OP_CP2_GPL = 0x3e,
	90	OP_CP2_NCCT = 0x3f,
	91	};
	92
	93	static void (cp2_ops[])(struct psxCP2Regs ) = {
	94	[OP_CP2_RTPS] = gteRTPS,
	95	[OP_CP2_RTPS] = gteRTPS,
	96	[OP_CP2_NCLIP] = gteNCLIP,
	97	[OP_CP2_OP] = gteOP,
	98	[OP_CP2_DPCS] = gteDPCS,
	99	[OP_CP2_INTPL] = gteINTPL,
	100	[OP_CP2_MVMVA] = gteMVMVA,
	101	[OP_CP2_NCDS] = gteNCDS,
	102	[OP_CP2_CDP] = gteCDP,
	103	[OP_CP2_NCDT] = gteNCDT,
	104	[OP_CP2_NCCS] = gteNCCS,
	105	[OP_CP2_CC] = gteCC,
	106	[OP_CP2_NCS] = gteNCS,
	107	[OP_CP2_NCT] = gteNCT,
	108	[OP_CP2_SQR] = gteSQR,
	109	[OP_CP2_DCPL] = gteDCPL,
	110	[OP_CP2_DPCT] = gteDPCT,
	111	[OP_CP2_AVSZ3] = gteAVSZ3,
	112	[OP_CP2_AVSZ4] = gteAVSZ4,
	113	[OP_CP2_RTPT] = gteRTPT,
	114	[OP_CP2_GPF] = gteGPF,
	115	[OP_CP2_GPL] = gteGPL,
	116	[OP_CP2_NCCT] = gteNCCT,
	117	};
	118
	119	static char cache_buf[64 * 1024];
	120
	121	static void cop2_op(struct lightrec_state *state, u32 func)
	122	{
	123	struct lightrec_registers *regs = lightrec_get_registers(state);
	124
	125	psxRegs.code = func;
	126
	127	if (unlikely(!cp2_ops[func & 0x3f])) {
	128	fprintf(stderr, "Invalid CP2 function %u\n", func);
	129	} else {
	130	/* This works because regs->cp2c comes right after regs->cp2d,
	131	* so it can be cast to a pcsxCP2Regs pointer. */
	132	cp2_ops[func & 0x3f]((psxCP2Regs *) regs->cp2d);
	133	}
	134	}
	135
	136	static bool has_interrupt(void)
	137	{
	138	struct lightrec_registers *regs = lightrec_get_registers(lightrec_state);
	139
	140	return ((psxHu32(0x1070) & psxHu32(0x1074)) &&
	141	(regs->cp0[12] & 0x401) == 0x401) \|\|
	142	(regs->cp0[12] & regs->cp0[13] & 0x0300);
	143	}
	144
	145	static void lightrec_tansition_to_pcsx(struct lightrec_state *state)
	146	{
	147	psxRegs.cycle += lightrec_current_cycle_count(state) / 1024;
	148	lightrec_reset_cycle_count(state, 0);
	149	}
	150
	151	static void lightrec_tansition_from_pcsx(struct lightrec_state *state)
	152	{
	153	s32 cycles_left = next_interupt - psxRegs.cycle;
	154
	155	if (block_stepping \|\| cycles_left <= 0 \|\| has_interrupt())
	156	lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT);
	157	else {
	158	lightrec_set_target_cycle_count(state, cycles_left * 1024);
	159	}
	160	}
	161
	162	static void hw_write_byte(struct lightrec_state *state,
	163	u32 op, void *host, u32 mem, u8 val)
	164	{
	165	lightrec_tansition_to_pcsx(state);
	166
	167	psxHwWrite8(mem, val);
	168
	169	lightrec_tansition_from_pcsx(state);
	170	}
	171
	172	static void hw_write_half(struct lightrec_state *state,
	173	u32 op, void *host, u32 mem, u16 val)
	174	{
	175	lightrec_tansition_to_pcsx(state);
	176
	177	psxHwWrite16(mem, val);
	178
	179	lightrec_tansition_from_pcsx(state);
	180	}
	181
	182	static void hw_write_word(struct lightrec_state *state,
	183	u32 op, void *host, u32 mem, u32 val)
	184	{
	185	lightrec_tansition_to_pcsx(state);
	186
	187	psxHwWrite32(mem, val);
	188
	189	lightrec_tansition_from_pcsx(state);
	190	}
	191
	192	static u8 hw_read_byte(struct lightrec_state state, u32 op, void host, u32 mem)
	193	{
	194	u8 val;
	195
	196	lightrec_tansition_to_pcsx(state);
	197
	198	val = psxHwRead8(mem);
	199
	200	lightrec_tansition_from_pcsx(state);
	201
	202	return val;
	203	}
	204
	205	static u16 hw_read_half(struct lightrec_state *state,
	206	u32 op, void *host, u32 mem)
	207	{
	208	u16 val;
	209
	210	lightrec_tansition_to_pcsx(state);
	211
	212	val = psxHwRead16(mem);
	213
	214	lightrec_tansition_from_pcsx(state);
	215
	216	return val;
	217	}
	218
	219	static u32 hw_read_word(struct lightrec_state *state,
	220	u32 op, void *host, u32 mem)
	221	{
	222	u32 val;
	223
	224	lightrec_tansition_to_pcsx(state);
	225
	226	val = psxHwRead32(mem);
	227
	228	lightrec_tansition_from_pcsx(state);
	229
	230	return val;
	231	}
	232
	233	static struct lightrec_mem_map_ops hw_regs_ops = {
	234	.sb = hw_write_byte,
	235	.sh = hw_write_half,
	236	.sw = hw_write_word,
	237	.lb = hw_read_byte,
	238	.lh = hw_read_half,
	239	.lw = hw_read_word,
	240	};
	241
	242	static u32 cache_ctrl;
	243
	244	static void cache_ctrl_write_word(struct lightrec_state *state,
	245	u32 op, void *host, u32 mem, u32 val)
	246	{
	247	cache_ctrl = val;
	248	}
	249
	250	static u32 cache_ctrl_read_word(struct lightrec_state *state,
	251	u32 op, void *host, u32 mem)
	252	{
	253	return cache_ctrl;
	254	}
	255
	256	static struct lightrec_mem_map_ops cache_ctrl_ops = {
	257	.sw = cache_ctrl_write_word,
	258	.lw = cache_ctrl_read_word,
	259	};
	260
	261	static struct lightrec_mem_map lightrec_map[] = {
	262	[PSX_MAP_KERNEL_USER_RAM] = {
	263	/* Kernel and user memory */
	264	.pc = 0x00000000,
	265	.length = 0x200000,
	266	},
	267	[PSX_MAP_BIOS] = {
	268	/* BIOS */
	269	.pc = 0x1fc00000,
	270	.length = 0x80000,
	271	},
	272	[PSX_MAP_SCRATCH_PAD] = {
	273	/* Scratch pad */
	274	.pc = 0x1f800000,
	275	.length = 0x400,
	276	},
	277	[PSX_MAP_PARALLEL_PORT] = {
	278	/* Parallel port */
	279	.pc = 0x1f000000,
	280	.length = 0x10000,
	281	},
	282	[PSX_MAP_HW_REGISTERS] = {
	283	/* Hardware registers */
	284	.pc = 0x1f801000,
	285	.length = 0x8000,
	286	.ops = &hw_regs_ops,
	287	},
	288	[PSX_MAP_CACHE_CONTROL] = {
	289	/* Cache control */
	290	.pc = 0x5ffe0130,
	291	.length = 4,
	292	.ops = &cache_ctrl_ops,
	293	},
	294
	295	/* Mirrors of the kernel/user memory */
	296	[PSX_MAP_MIRROR1] = {
	297	.pc = 0x00200000,
	298	.length = 0x200000,
	299	.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	300	},
	301	[PSX_MAP_MIRROR2] = {
	302	.pc = 0x00400000,
	303	.length = 0x200000,
	304	.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	305	},
	306	[PSX_MAP_MIRROR3] = {
	307	.pc = 0x00600000,
	308	.length = 0x200000,
	309	.mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
	310	},
	311
	312	/* Mirror of the parallel port. Only used by the PS2/PS3 BIOS */
	313	[PSX_MAP_PPORT_MIRROR] = {
	314	.pc = 0x1fa00000,
	315	.length = 0x10000,
	316	.mirror_of = &lightrec_map[PSX_MAP_PARALLEL_PORT],
	317	},
	318
	319	/* Code buffer */
	320	[PSX_MAP_CODE_BUFFER] = {
	321	.length = CODE_BUFFER_SIZE,
	322	},
	323	};
	324
	325	static void lightrec_enable_ram(struct lightrec_state *state, bool enable)
	326	{
	327	if (enable)
	328	memcpy(psxM, cache_buf, sizeof(cache_buf));
	329	else
	330	memcpy(cache_buf, psxM, sizeof(cache_buf));
	331	}
	332
	333	static bool lightrec_can_hw_direct(u32 kaddr, bool is_write, u8 size)
	334	{
	335	switch (size) {
	336	case 8:
	337	switch (kaddr) {
	338	case 0x1f801040:
	339	case 0x1f801050:
	340	case 0x1f801800:
	341	case 0x1f801801:
	342	case 0x1f801802:
	343	case 0x1f801803:
	344	return false;
	345	default:
	346	return true;
	347	}
	348	case 16:
	349	switch (kaddr) {
	350	case 0x1f801040:
	351	case 0x1f801044:
	352	case 0x1f801048:
	353	case 0x1f80104a:
	354	case 0x1f80104e:
	355	case 0x1f801050:
	356	case 0x1f801054:
	357	case 0x1f80105a:
	358	case 0x1f80105e:
	359	case 0x1f801100:
	360	case 0x1f801104:
	361	case 0x1f801108:
	362	case 0x1f801110:
	363	case 0x1f801114:
	364	case 0x1f801118:
	365	case 0x1f801120:
	366	case 0x1f801124:
	367	case 0x1f801128:
	368	return false;
	369	case 0x1f801070:
	370	case 0x1f801074:
	371	return !is_write;
	372	default:
	373	return kaddr < 0x1f801c00 \|\| kaddr >= 0x1f801e00;
	374	}
	375	default:
	376	switch (kaddr) {
	377	case 0x1f801040:
	378	case 0x1f801050:
	379	case 0x1f801100:
	380	case 0x1f801104:
	381	case 0x1f801108:
	382	case 0x1f801110:
	383	case 0x1f801114:
	384	case 0x1f801118:
	385	case 0x1f801120:
	386	case 0x1f801124:
	387	case 0x1f801128:
	388	case 0x1f801810:
	389	case 0x1f801814:
	390	case 0x1f801820:
	391	case 0x1f801824:
	392	return false;
	393	case 0x1f801070:
	394	case 0x1f801074:
	395	case 0x1f801088:
	396	case 0x1f801098:
	397	case 0x1f8010a8:
	398	case 0x1f8010b8:
	399	case 0x1f8010c8:
	400	case 0x1f8010e8:
	401	case 0x1f8010f4:
	402	return !is_write;
	403	default:
	404	return !is_write \|\| kaddr < 0x1f801c00 \|\| kaddr >= 0x1f801e00;
	405	}
	406	}
	407	}
	408
	409	#if defined(HW_DOL) \|\| defined(HW_RVL)
	410	static void lightrec_code_inv(void *ptr, uint32_t len)
	411	{
	412	extern void DCFlushRange(void *ptr, u32 len);
	413	extern void ICInvalidateRange(void *ptr, u32 len);
	414
	415	DCFlushRange(ptr, len);
	416	ICInvalidateRange(ptr, len);
	417	}
	418	#elif defined(HW_WUP)
	419	static void lightrec_code_inv(void *ptr, uint32_t len)
	420	{
	421	wiiu_clear_cache(ptr, (void *)((uintptr_t)ptr + len));
	422	}
	423	#endif
	424
	425	static const struct lightrec_ops lightrec_ops = {
	426	.cop2_op = cop2_op,
	427	.enable_ram = lightrec_enable_ram,
	428	.hw_direct = lightrec_can_hw_direct,
	429	#if defined(HW_DOL) \|\| defined(HW_RVL) \|\| defined(HW_WUP)
	430	.code_inv = lightrec_code_inv,
	431	#endif
	432	};
	433
	434	static int lightrec_plugin_init(void)
	435	{
	436	lightrec_map[PSX_MAP_KERNEL_USER_RAM].address = psxM;
	437	lightrec_map[PSX_MAP_BIOS].address = psxR;
	438	lightrec_map[PSX_MAP_SCRATCH_PAD].address = psxH;
	439	lightrec_map[PSX_MAP_HW_REGISTERS].address = psxH + 0x1000;
	440	lightrec_map[PSX_MAP_PARALLEL_PORT].address = psxP;
	441
	442	if (!LIGHTREC_CUSTOM_MAP) {
	443	#if P_HAVE_MMAP
	444	code_buffer = mmap(0, CODE_BUFFER_SIZE,
	445	PROT_EXEC \| PROT_READ \| PROT_WRITE,
	446	MAP_PRIVATE \| MAP_ANONYMOUS, -1, 0);
	447	if (code_buffer == MAP_FAILED)
	448	return -ENOMEM;
	449	#else
	450	code_buffer = malloc(CODE_BUFFER_SIZE);
	451	if (!code_buffer)
	452	return -ENOMEM;
	453	#endif
	454	}
	455
	456	if (LIGHTREC_CUSTOM_MAP) {
	457	lightrec_map[PSX_MAP_MIRROR1].address = psxM + 0x200000;
	458	lightrec_map[PSX_MAP_MIRROR2].address = psxM + 0x400000;
	459	lightrec_map[PSX_MAP_MIRROR3].address = psxM + 0x600000;
	460	}
	461
	462	lightrec_map[PSX_MAP_CODE_BUFFER].address = code_buffer;
	463
	464	use_lightrec_interpreter = !!getenv("LIGHTREC_INTERPRETER");
	465
	466	lightrec_state = lightrec_init(name,
	467	lightrec_map, ARRAY_SIZE(lightrec_map),
	468	&lightrec_ops);
	469
	470	// fprintf(stderr, "M=0x%lx, P=0x%lx, R=0x%lx, H=0x%lx\n",
	471	// (uintptr_t) psxM,
	472	// (uintptr_t) psxP,
	473	// (uintptr_t) psxR,
	474	// (uintptr_t) psxH);
	475
	476	#ifndef _WIN32
	477	signal(SIGPIPE, exit);
	478	#endif
	479	return 0;
	480	}
	481
	482	static void lightrec_plugin_execute_internal(bool block_only)
	483	{
	484	struct lightrec_registers *regs;
	485	u32 flags, cycles_pcsx;
	486
	487	regs = lightrec_get_registers(lightrec_state);
	488	gen_interupt((psxCP0Regs *)regs->cp0);
	489	cycles_pcsx = next_interupt - psxRegs.cycle;
	490	assert((s32)cycles_pcsx > 0);
	491
	492	// step during early boot so that 0x80030000 fastboot hack works
	493	block_stepping = block_only;
	494	if (block_only)
	495	cycles_pcsx = 0;
	496
	497	if (use_pcsx_interpreter) {
	498	intExecuteBlock(0);
	499	} else {
	500	u32 cycles_lightrec = cycles_pcsx * 1024;
	501	if (unlikely(use_lightrec_interpreter)) {
	502	psxRegs.pc = lightrec_run_interpreter(lightrec_state,
	503	psxRegs.pc,
	504	cycles_lightrec);
	505	} else {
	506	psxRegs.pc = lightrec_execute(lightrec_state,
	507	psxRegs.pc, cycles_lightrec);
	508	}
	509
	510	lightrec_tansition_to_pcsx(lightrec_state);
	511
	512	flags = lightrec_exit_flags(lightrec_state);
	513
	514	if (flags & LIGHTREC_EXIT_SEGFAULT) {
	515	fprintf(stderr, "Exiting at cycle 0x%08x\n",
	516	psxRegs.cycle);
	517	exit(1);
	518	}
	519
	520	if (flags & LIGHTREC_EXIT_SYSCALL)
	521	psxException(0x20, 0, (psxCP0Regs *)regs->cp0);
	522	}
	523
	524	if ((regs->cp0[13] & regs->cp0[12] & 0x300) && (regs->cp0[12] & 0x1)) {
	525	/* Handle software interrupts */
	526	regs->cp0[13] &= ~0x7c;
	527	psxException(regs->cp0[13], 0, (psxCP0Regs *)regs->cp0);
	528	}
	529	}
	530
	531	static void lightrec_plugin_execute(void)
	532	{
	533	extern int stop;
	534
	535	while (!stop)
	536	lightrec_plugin_execute_internal(false);
	537	}
	538
	539	static void lightrec_plugin_execute_block(enum blockExecCaller caller)
	540	{
	541	lightrec_plugin_execute_internal(true);
	542	}
	543
	544	static void lightrec_plugin_clear(u32 addr, u32 size)
	545	{
	546	if (addr == 0 && size == UINT32_MAX)
	547	lightrec_invalidate_all(lightrec_state);
	548	else
	549	/* size * 4: PCSX uses DMA units */
	550	lightrec_invalidate(lightrec_state, addr, size * 4);
	551	}
	552
	553	static void lightrec_plugin_sync_regs_to_pcsx(void);
	554	static void lightrec_plugin_sync_regs_from_pcsx(void);
	555
	556	static void lightrec_plugin_notify(enum R3000Anote note, void *data)
	557	{
	558	switch (note)
	559	{
	560	case R3000ACPU_NOTIFY_CACHE_ISOLATED:
	561	case R3000ACPU_NOTIFY_CACHE_UNISOLATED:
	562	/* not used, lightrec calls lightrec_enable_ram() instead */
	563	break;
	564	case R3000ACPU_NOTIFY_BEFORE_SAVE:
	565	lightrec_plugin_sync_regs_to_pcsx();
	566	break;
	567	case R3000ACPU_NOTIFY_AFTER_LOAD:
	568	lightrec_plugin_sync_regs_from_pcsx();
	569	break;
	570	}
	571	}
	572
	573	static void lightrec_plugin_apply_config()
	574	{
	575	u32 cycle_mult = Config.cycle_multiplier_override && Config.cycle_multiplier == CYCLE_MULT_DEFAULT
	576	? Config.cycle_multiplier_override : Config.cycle_multiplier;
	577	assert(cycle_mult);
	578
	579	lightrec_set_cycles_per_opcode(lightrec_state, cycle_mult * 1024 / 100);
	580	}
	581
	582	static void lightrec_plugin_shutdown(void)
	583	{
	584	lightrec_destroy(lightrec_state);
	585
	586	if (!LIGHTREC_CUSTOM_MAP) {
	587	#if P_HAVE_MMAP
	588	munmap(code_buffer, CODE_BUFFER_SIZE);
	589	#else
	590	free(code_buffer);
	591	#endif
	592	}
	593	}
	594
	595	static void lightrec_plugin_reset(void)
	596	{
	597	struct lightrec_registers *regs;
	598
	599	regs = lightrec_get_registers(lightrec_state);
	600
	601	/* Invalidate all blocks */
	602	lightrec_invalidate_all(lightrec_state);
	603
	604	/* Reset registers */
	605	memset(regs, 0, sizeof(*regs));
	606
	607	regs->cp0[12] = 0x10900000; // COP0 enabled \| BEV = 1 \| TS = 1
	608	regs->cp0[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
	609	}
	610
	611	static void lightrec_plugin_sync_regs_from_pcsx(void)
	612	{
	613	struct lightrec_registers *regs;
	614
	615	regs = lightrec_get_registers(lightrec_state);
	616	memcpy(regs->cp2d, &psxRegs.CP2, sizeof(regs->cp2d) + sizeof(regs->cp2c));
	617	memcpy(regs->cp0, &psxRegs.CP0, sizeof(regs->cp0));
	618	memcpy(regs->gpr, &psxRegs.GPR, sizeof(regs->gpr));
	619
	620	lightrec_invalidate_all(lightrec_state);
	621	}
	622
	623	static void lightrec_plugin_sync_regs_to_pcsx(void)
	624	{
	625	struct lightrec_registers *regs;
	626
	627	regs = lightrec_get_registers(lightrec_state);
	628	memcpy(&psxRegs.CP2, regs->cp2d, sizeof(regs->cp2d) + sizeof(regs->cp2c));
	629	memcpy(&psxRegs.CP0, regs->cp0, sizeof(regs->cp0));
	630	memcpy(&psxRegs.GPR, regs->gpr, sizeof(regs->gpr));
	631	}
	632
	633	R3000Acpu psxRec =
	634	{
	635	lightrec_plugin_init,
	636	lightrec_plugin_reset,
	637	lightrec_plugin_execute,
	638	lightrec_plugin_execute_block,
	639	lightrec_plugin_clear,
	640	lightrec_plugin_notify,
	641	lightrec_plugin_apply_config,
	642	lightrec_plugin_shutdown,
	643	};