#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"
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;
-static u32 cycle_mult_to_pcsx; // 22.10 fractional
-static u32 cycle_mult_from_pcsx;
enum my_cp2_opcodes {
OP_CP2_RTPS = 0x01,
(regs->cp0[12] & regs->cp0[13] & 0x0300);
}
-static u32 cycles_pcsx_to_lightrec(u32 c)
-{
- assert((u64)c * cycle_mult_from_pcsx <= (u32)-1);
- return c * cycle_mult_from_pcsx >> 10;
-}
-
static void lightrec_tansition_to_pcsx(struct lightrec_state *state)
{
- psxRegs.cycle += lightrec_current_cycle_count(state) * cycle_mult_to_pcsx >> 10;
+ psxRegs.cycle += lightrec_current_cycle_count(state) / 1024;
lightrec_reset_cycle_count(state, 0);
}
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_pcsx_to_lightrec(cycles_left));
+ lightrec_set_target_cycle_count(state, cycles_left * 1024);
}
}
[PSX_MAP_HW_REGISTERS] = {
/* Hardware registers */
.pc = 0x1f801000,
- .length = 0x2000,
+ .length = 0x8000,
.ops = &hw_regs_ops,
},
[PSX_MAP_CACHE_CONTROL] = {
.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,
},
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;
}
+ lightrec_map[PSX_MAP_CODE_BUFFER].address = code_buffer;
+
use_lightrec_interpreter = !!getenv("LIGHTREC_INTERPRETER");
lightrec_state = lightrec_init(name,
if (use_pcsx_interpreter) {
intExecuteBlock(0);
} else {
- u32 cycles_lightrec = cycles_pcsx_to_lightrec(cycles_pcsx);
+ u32 cycles_lightrec = cycles_pcsx * 1024;
if (unlikely(use_lightrec_interpreter)) {
psxRegs.pc = lightrec_run_interpreter(lightrec_state,
psxRegs.pc,
u32 cycle_mult = Config.cycle_multiplier_override && Config.cycle_multiplier == CYCLE_MULT_DEFAULT
? Config.cycle_multiplier_override : Config.cycle_multiplier;
assert(cycle_mult);
- cycle_mult_to_pcsx = (cycle_mult * 1024 + 199) / 200;
- cycle_mult_from_pcsx = (200 * 1024 + cycle_mult/2) / 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)