620 lines
16 KiB
C
620 lines
16 KiB
C
/* gameplaySP
|
|
*
|
|
* Copyright (C) 2006 Exophase <exophase@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include <ctype.h>
|
|
|
|
#ifdef PSP_BUILD
|
|
void vblank_interrupt_handler(u32 sub, u32 *parg);
|
|
#endif
|
|
|
|
timer_type timer[4];
|
|
|
|
//debug_state current_debug_state = COUNTDOWN_BREAKPOINT;
|
|
//debug_state current_debug_state = PC_BREAKPOINT;
|
|
u32 breakpoint_value = 0x7c5000;
|
|
debug_state current_debug_state = RUN;
|
|
//debug_state current_debug_state = STEP_RUN;
|
|
|
|
//u32 breakpoint_value = 0;
|
|
|
|
frameskip_type current_frameskip_type = auto_frameskip;
|
|
u32 global_cycles_per_instruction = 1;
|
|
|
|
u32 random_skip = 0;
|
|
u32 fps_debug = 0;
|
|
|
|
u32 frameskip_value = 2;
|
|
|
|
u64 last_frame_interval_timestamp;
|
|
|
|
u32 skip_next_frame = 0;
|
|
|
|
u32 frameskip_counter = 0;
|
|
|
|
u32 cpu_ticks = 0;
|
|
u32 frame_ticks = 0;
|
|
|
|
u32 execute_cycles = 960;
|
|
s32 video_count = 960;
|
|
u32 ticks;
|
|
|
|
u32 arm_frame = 0;
|
|
u32 thumb_frame = 0;
|
|
u32 last_frame = 0;
|
|
|
|
u32 cycle_memory_access = 0;
|
|
u32 cycle_pc_relative_access = 0;
|
|
u32 cycle_sp_relative_access = 0;
|
|
u32 cycle_block_memory_access = 0;
|
|
u32 cycle_block_memory_sp_access = 0;
|
|
u32 cycle_block_memory_words = 0;
|
|
u32 cycle_dma16_words = 0;
|
|
u32 cycle_dma32_words = 0;
|
|
u32 flush_ram_count = 0;
|
|
u32 gbc_update_count = 0;
|
|
u32 oam_update_count = 0;
|
|
|
|
u32 synchronize_flag = 1;
|
|
|
|
u32 update_backup_flag = 1;
|
|
char main_path[512];
|
|
|
|
void trigger_ext_event();
|
|
|
|
#define check_count(count_var) \
|
|
if(count_var < execute_cycles) \
|
|
execute_cycles = count_var; \
|
|
|
|
#define check_timer(timer_number) \
|
|
if(timer[timer_number].status == TIMER_PRESCALE) \
|
|
check_count(timer[timer_number].count); \
|
|
|
|
#define update_timer(timer_number) \
|
|
if(timer[timer_number].status != TIMER_INACTIVE) \
|
|
{ \
|
|
if(timer[timer_number].status != TIMER_CASCADE) \
|
|
{ \
|
|
timer[timer_number].count -= execute_cycles; \
|
|
io_registers[REG_TM##timer_number##D] = \
|
|
-(timer[timer_number].count >> timer[timer_number].prescale); \
|
|
} \
|
|
\
|
|
if(timer[timer_number].count <= 0) \
|
|
{ \
|
|
if(timer[timer_number].irq == TIMER_TRIGGER_IRQ) \
|
|
irq_raised |= IRQ_TIMER##timer_number; \
|
|
\
|
|
if((timer_number != 3) && \
|
|
(timer[timer_number + 1].status == TIMER_CASCADE)) \
|
|
{ \
|
|
timer[timer_number + 1].count--; \
|
|
io_registers[REG_TM0D + (timer_number + 1) * 2] = \
|
|
-(timer[timer_number + 1].count); \
|
|
} \
|
|
\
|
|
if(timer_number < 2) \
|
|
{ \
|
|
if(timer[timer_number].direct_sound_channels & 0x01) \
|
|
sound_timer(timer[timer_number].frequency_step, 0); \
|
|
\
|
|
if(timer[timer_number].direct_sound_channels & 0x02) \
|
|
sound_timer(timer[timer_number].frequency_step, 1); \
|
|
} \
|
|
\
|
|
timer[timer_number].count += \
|
|
(timer[timer_number].reload << timer[timer_number].prescale); \
|
|
} \
|
|
} \
|
|
|
|
void init_main()
|
|
{
|
|
u32 i;
|
|
|
|
skip_next_frame = 0;
|
|
|
|
for(i = 0; i < 4; i++)
|
|
{
|
|
dma[i].start_type = DMA_INACTIVE;
|
|
dma[i].direct_sound_channel = DMA_NO_DIRECT_SOUND;
|
|
timer[i].status = TIMER_INACTIVE;
|
|
timer[i].reload = 0x10000;
|
|
timer[i].stop_cpu_ticks = 0;
|
|
}
|
|
|
|
timer[0].direct_sound_channels = TIMER_DS_CHANNEL_BOTH;
|
|
timer[1].direct_sound_channels = TIMER_DS_CHANNEL_NONE;
|
|
|
|
cpu_ticks = 0;
|
|
frame_ticks = 0;
|
|
|
|
execute_cycles = 960;
|
|
video_count = 960;
|
|
|
|
flush_translation_cache_rom();
|
|
flush_translation_cache_ram();
|
|
flush_translation_cache_bios();
|
|
}
|
|
|
|
void print_memory_stats(u32 *counter, u32 *region_stats, char *stats_str)
|
|
{
|
|
u32 other_region_counter = region_stats[0x1] + region_stats[0xE] +
|
|
region_stats[0xF];
|
|
u32 rom_region_counter = region_stats[0x8] + region_stats[0x9] +
|
|
region_stats[0xA] + region_stats[0xB] + region_stats[0xC] +
|
|
region_stats[0xD];
|
|
u32 _counter = *counter;
|
|
|
|
printf("memory access stats: %s (out of %d)\n", stats_str, _counter);
|
|
printf("bios: %f%%\tiwram: %f%%\tewram: %f%%\tvram: %f\n",
|
|
region_stats[0x0] * 100.0 / _counter, region_stats[0x3] * 100.0 /
|
|
_counter,
|
|
region_stats[0x2] * 100.0 / _counter, region_stats[0x6] * 100.0 /
|
|
_counter);
|
|
|
|
printf("oam: %f%%\tpalette: %f%%\trom: %f%%\tother: %f%%\n",
|
|
region_stats[0x7] * 100.0 / _counter, region_stats[0x5] * 100.0 /
|
|
_counter,
|
|
rom_region_counter * 100.0 / _counter, other_region_counter * 100.0 /
|
|
_counter);
|
|
|
|
*counter = 0;
|
|
memset(region_stats, 0, sizeof(u32) * 16);
|
|
}
|
|
|
|
u32 event_cycles = 0;
|
|
const u32 event_cycles_trigger = 60 * 5;
|
|
u32 no_alpha = 0;
|
|
|
|
void trigger_ext_event()
|
|
{
|
|
static u32 event_number = 0;
|
|
static u64 benchmark_ticks[16];
|
|
u64 new_ticks;
|
|
|
|
return;
|
|
|
|
if(event_number)
|
|
{
|
|
get_ticks_us(&new_ticks);
|
|
benchmark_ticks[event_number - 1] =
|
|
new_ticks - benchmark_ticks[event_number - 1];
|
|
}
|
|
|
|
current_frameskip_type = no_frameskip;
|
|
no_alpha = 0;
|
|
synchronize_flag = 0;
|
|
|
|
switch(event_number)
|
|
{
|
|
case 0:
|
|
// Full benchmark, run normally
|
|
break;
|
|
|
|
case 1:
|
|
// No alpha blending
|
|
no_alpha = 1;
|
|
break;
|
|
|
|
case 2:
|
|
// No video benchmark
|
|
// Set frameskip really high + manual
|
|
current_frameskip_type = manual_frameskip;
|
|
frameskip_value = 1000000;
|
|
break;
|
|
|
|
case 3:
|
|
// No CPU benchmark
|
|
// Put CPU in halt mode, put it in IRQ mode with interrupts off
|
|
reg[CPU_HALT_STATE] = CPU_HALT;
|
|
reg[REG_CPSR] = 0xD2;
|
|
break;
|
|
|
|
case 4:
|
|
// No CPU or video benchmark
|
|
reg[CPU_HALT_STATE] = CPU_HALT;
|
|
reg[REG_CPSR] = 0xD2;
|
|
current_frameskip_type = manual_frameskip;
|
|
frameskip_value = 1000000;
|
|
break;
|
|
|
|
case 5:
|
|
{
|
|
// Done
|
|
char *print_strings[] =
|
|
{
|
|
"Full test ",
|
|
"No blending ",
|
|
"No video ",
|
|
"No CPU ",
|
|
"No CPU/video",
|
|
"CPU speed ",
|
|
"Video speed ",
|
|
"Alpha cost "
|
|
};
|
|
u32 i;
|
|
|
|
benchmark_ticks[6] = benchmark_ticks[0] - benchmark_ticks[2];
|
|
benchmark_ticks[5] = benchmark_ticks[0] - benchmark_ticks[4] -
|
|
benchmark_ticks[6];
|
|
benchmark_ticks[7] = benchmark_ticks[0] - benchmark_ticks[1];
|
|
|
|
printf("Benchmark results (%d frames): \n", event_cycles_trigger);
|
|
for(i = 0; i < 8; i++)
|
|
{
|
|
printf(" %s: %d ms (%f ms per frame)\n",
|
|
print_strings[i], (u32)benchmark_ticks[i] / 1000,
|
|
(float)(benchmark_ticks[i] / (1000.0 * event_cycles_trigger)));
|
|
if(i == 4)
|
|
printf("\n");
|
|
}
|
|
quit();
|
|
}
|
|
}
|
|
|
|
event_cycles = 0;
|
|
|
|
get_ticks_us(benchmark_ticks + event_number);
|
|
event_number++;
|
|
}
|
|
|
|
u32 update_gba()
|
|
{
|
|
irq_type irq_raised = IRQ_NONE;
|
|
|
|
do
|
|
{
|
|
cpu_ticks += execute_cycles;
|
|
|
|
reg[CHANGED_PC_STATUS] = 0;
|
|
|
|
if(gbc_sound_update)
|
|
{
|
|
gbc_update_count++;
|
|
update_gbc_sound(cpu_ticks);
|
|
gbc_sound_update = 0;
|
|
}
|
|
|
|
update_timer(0);
|
|
update_timer(1);
|
|
update_timer(2);
|
|
update_timer(3);
|
|
|
|
video_count -= execute_cycles;
|
|
|
|
if(video_count <= 0)
|
|
{
|
|
u32 vcount = io_registers[REG_VCOUNT];
|
|
u32 dispstat = io_registers[REG_DISPSTAT];
|
|
|
|
if((dispstat & 0x02) == 0)
|
|
{
|
|
// Transition from hrefresh to hblank
|
|
video_count += (272);
|
|
dispstat |= 0x02;
|
|
|
|
if((dispstat & 0x01) == 0)
|
|
{
|
|
u32 i;
|
|
if(oam_update)
|
|
oam_update_count++;
|
|
|
|
if(no_alpha)
|
|
io_registers[REG_BLDCNT] = 0;
|
|
update_scanline();
|
|
|
|
// If in visible area also fire HDMA
|
|
for(i = 0; i < 4; i++)
|
|
{
|
|
if(dma[i].start_type == DMA_START_HBLANK)
|
|
dma_transfer(dma + i);
|
|
}
|
|
}
|
|
|
|
if(dispstat & 0x10)
|
|
irq_raised |= IRQ_HBLANK;
|
|
}
|
|
else
|
|
{
|
|
// Transition from hblank to next line
|
|
video_count += 960;
|
|
dispstat &= ~0x02;
|
|
|
|
vcount++;
|
|
|
|
if(vcount == 160)
|
|
{
|
|
// Transition from vrefresh to vblank
|
|
u32 i;
|
|
|
|
dispstat |= 0x01;
|
|
if(dispstat & 0x8)
|
|
{
|
|
irq_raised |= IRQ_VBLANK;
|
|
}
|
|
|
|
affine_reference_x[0] =
|
|
(s32)(address32(io_registers, 0x28) << 4) >> 4;
|
|
affine_reference_y[0] =
|
|
(s32)(address32(io_registers, 0x2C) << 4) >> 4;
|
|
affine_reference_x[1] =
|
|
(s32)(address32(io_registers, 0x38) << 4) >> 4;
|
|
affine_reference_y[1] =
|
|
(s32)(address32(io_registers, 0x3C) << 4) >> 4;
|
|
|
|
for(i = 0; i < 4; i++)
|
|
{
|
|
if(dma[i].start_type == DMA_START_VBLANK)
|
|
dma_transfer(dma + i);
|
|
}
|
|
}
|
|
else
|
|
|
|
if(vcount == 228)
|
|
{
|
|
// Transition from vblank to next screen
|
|
dispstat &= ~0x01;
|
|
frame_ticks++;
|
|
|
|
/* printf("frame update (%x), %d instructions total, %d RAM flushes\n",
|
|
reg[REG_PC], instruction_count - last_frame, flush_ram_count);
|
|
last_frame = instruction_count;
|
|
*/
|
|
/* printf("%d gbc audio updates\n", gbc_update_count);
|
|
printf("%d oam updates\n", oam_update_count); */
|
|
gbc_update_count = 0;
|
|
oam_update_count = 0;
|
|
flush_ram_count = 0;
|
|
|
|
#ifdef __LIBRETRO__
|
|
switch_to_main_thread();
|
|
|
|
update_gbc_sound(cpu_ticks);
|
|
gbc_sound_update = 0;
|
|
#else
|
|
if(update_input())
|
|
continue;
|
|
|
|
update_gbc_sound(cpu_ticks);
|
|
|
|
update_screen();
|
|
|
|
synchronize();
|
|
|
|
if(update_backup_flag)
|
|
update_backup();
|
|
#endif
|
|
process_cheats();
|
|
|
|
event_cycles++;
|
|
if(event_cycles == event_cycles_trigger)
|
|
{
|
|
trigger_ext_event();
|
|
continue;
|
|
}
|
|
|
|
vcount = 0;
|
|
}
|
|
|
|
if(vcount == (dispstat >> 8))
|
|
{
|
|
// vcount trigger
|
|
dispstat |= 0x04;
|
|
if(dispstat & 0x20)
|
|
{
|
|
irq_raised |= IRQ_VCOUNT;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dispstat &= ~0x04;
|
|
}
|
|
|
|
io_registers[REG_VCOUNT] = vcount;
|
|
}
|
|
io_registers[REG_DISPSTAT] = dispstat;
|
|
}
|
|
|
|
if(irq_raised)
|
|
raise_interrupt(irq_raised);
|
|
|
|
execute_cycles = video_count;
|
|
|
|
check_timer(0);
|
|
check_timer(1);
|
|
check_timer(2);
|
|
check_timer(3);
|
|
} while(reg[CPU_HALT_STATE] != CPU_ACTIVE);
|
|
|
|
return execute_cycles;
|
|
}
|
|
|
|
#ifdef PSP_BUILD
|
|
|
|
u32 real_frame_count = 0;
|
|
u32 virtual_frame_count = 0;
|
|
u32 num_skipped_frames = 0;
|
|
|
|
void vblank_interrupt_handler(u32 sub, u32 *parg)
|
|
{
|
|
real_frame_count++;
|
|
}
|
|
|
|
void synchronize()
|
|
{
|
|
char char_buffer[64];
|
|
u64 new_ticks, time_delta;
|
|
s32 used_frameskip = frameskip_value;
|
|
|
|
if(!synchronize_flag)
|
|
{
|
|
used_frameskip = 4;
|
|
virtual_frame_count = real_frame_count - 1;
|
|
}
|
|
|
|
skip_next_frame = 0;
|
|
|
|
virtual_frame_count++;
|
|
|
|
if(real_frame_count >= virtual_frame_count)
|
|
{
|
|
if((real_frame_count > virtual_frame_count) &&
|
|
(current_frameskip_type == auto_frameskip) &&
|
|
(num_skipped_frames < frameskip_value))
|
|
{
|
|
skip_next_frame = 1;
|
|
num_skipped_frames++;
|
|
}
|
|
else
|
|
{
|
|
virtual_frame_count = real_frame_count;
|
|
num_skipped_frames = 0;
|
|
}
|
|
|
|
// Here so that the home button return will eventually work.
|
|
// If it's not running fullspeed anyway this won't really hurt
|
|
// it much more.
|
|
|
|
delay_us(1);
|
|
}
|
|
else
|
|
{
|
|
if(synchronize_flag)
|
|
sceDisplayWaitVblankStart();
|
|
}
|
|
|
|
if(current_frameskip_type == manual_frameskip)
|
|
{
|
|
frameskip_counter = (frameskip_counter + 1) %
|
|
(used_frameskip + 1);
|
|
if(random_skip)
|
|
{
|
|
if(frameskip_counter != (rand() % (used_frameskip + 1)))
|
|
skip_next_frame = 1;
|
|
}
|
|
else
|
|
{
|
|
if(frameskip_counter)
|
|
skip_next_frame = 1;
|
|
}
|
|
}
|
|
|
|
/* sprintf(char_buffer, "%08d %08d %d %d %d\n",
|
|
real_frame_count, virtual_frame_count, num_skipped_frames,
|
|
real_frame_count - virtual_frame_count, skip_next_frame);
|
|
print_string(char_buffer, 0xFFFF, 0x0000, 0, 10); */
|
|
|
|
/*
|
|
sprintf(char_buffer, "%02d %02d %06d %07d", frameskip, (u32)ms_needed,
|
|
ram_translation_ptr - ram_translation_cache, rom_translation_ptr -
|
|
rom_translation_cache);
|
|
print_string(char_buffer, 0xFFFF, 0x0000, 0, 0);
|
|
*/
|
|
}
|
|
#endif
|
|
|
|
void quit()
|
|
{
|
|
if(!update_backup_flag)
|
|
update_backup_force();
|
|
|
|
sound_exit();
|
|
}
|
|
|
|
void reset_gba()
|
|
{
|
|
init_main();
|
|
init_memory();
|
|
init_cpu();
|
|
reset_sound();
|
|
}
|
|
|
|
#ifdef PSP_BUILD
|
|
void delay_us(u32 us_count)
|
|
{
|
|
sceKernelDelayThread(us_count);
|
|
}
|
|
|
|
void get_ticks_us(u64 *tick_return)
|
|
{
|
|
u64 ticks;
|
|
sceRtcGetCurrentTick(&ticks);
|
|
|
|
*tick_return = (ticks * 1000000) / sceRtcGetTickResolution();
|
|
}
|
|
#endif
|
|
|
|
u32 file_length(const char *dummy, FILE *fp)
|
|
{
|
|
#ifdef PSP_BUILD
|
|
SceIoStat stats;
|
|
sceIoGetstat(filename, &stats);
|
|
return stats.st_size;
|
|
#else
|
|
u32 length;
|
|
|
|
fseek(fp, 0, SEEK_END);
|
|
length = ftell(fp);
|
|
fseek(fp, 0, SEEK_SET);
|
|
|
|
return length;
|
|
#endif
|
|
}
|
|
|
|
void change_ext(const char *src, char *buffer, const char *extension)
|
|
{
|
|
char *dot_position;
|
|
strcpy(buffer, src);
|
|
dot_position = strrchr(buffer, '.');
|
|
|
|
if(dot_position)
|
|
strcpy(dot_position, extension);
|
|
}
|
|
|
|
// make path: <main_path>/<romname>.<ext>
|
|
void make_rpath(char *buff, size_t size, const char *ext)
|
|
{
|
|
char *p = strrchr(gamepak_filename, PATH_SEPARATOR_CHAR);
|
|
if (p == NULL)
|
|
p = gamepak_filename;
|
|
|
|
snprintf(buff, size, "%s/%s", main_path, p);
|
|
p = strrchr(buff, '.');
|
|
if (p != NULL)
|
|
strcpy(p, ext);
|
|
}
|
|
|
|
#define main_savestate_builder(type) \
|
|
void main_##type##_savestate(file_tag_type savestate_file) \
|
|
{ \
|
|
file_##type##_variable(savestate_file, cpu_ticks); \
|
|
file_##type##_variable(savestate_file, execute_cycles); \
|
|
file_##type##_variable(savestate_file, video_count); \
|
|
file_##type##_array(savestate_file, timer); \
|
|
} \
|
|
|
|
main_savestate_builder(read);
|
|
main_savestate_builder(write_mem);
|
|
|
|
|
|
void printout(void *str, u32 val)
|
|
{
|
|
printf(str, val);
|
|
}
|