mirror of
https://github.com/izzy2lost/PSX1.git
synced 2026-03-26 16:38:52 -07:00
notaz
90ac6fed27
minimum only for now, mostly based on Mednafen libretro/pcsx_rearmed#573 libretro/pcsx_rearmed#783
110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gpu.h"
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static inline unsigned int pcnt_get(void)
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{
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unsigned int val;
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#ifdef __ARM_ARCH_7A__
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asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(val));
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#else
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val = 0;
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#endif
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return val;
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}
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static inline void pcnt_init(void)
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{
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#ifdef __ARM_ARCH_7A__
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int v;
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asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(v));
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v |= 5; // master enable, ccnt reset
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v &= ~8; // ccnt divider 0
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asm volatile("mcr p15, 0, %0, c9, c12, 0" :: "r"(v));
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// enable cycle counter
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asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r"(1<<31));
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#endif
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}
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const unsigned char cmd_lengths[256] =
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{
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0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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3, 3, 3, 3, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8, 8, 8, // 20
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5, 5, 5, 5, 8, 8, 8, 8, 7, 7, 7, 7, 11, 11, 11, 11,
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2, 2, 2, 2, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3, 3, 3, // 40
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3, 3, 3, 3, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4,
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2, 2, 2, 2, 3, 3, 3, 3, 1, 1, 1, 1, 2, 2, 2, 2, // 60
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1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2,
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3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // a0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // c0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // e0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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struct psx_gpu gpu __attribute__((aligned(64)));
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typedef struct
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{
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uint16_t vram[1024 * 512];
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uint32_t gpu_register[15];
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uint32_t status;
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} gpu_dump_struct;
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static gpu_dump_struct state;
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int main(int argc, char *argv[])
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{
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unsigned int start_cycles;
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uint32_t *list;
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int size, dummy;
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FILE *state_file;
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FILE *list_file;
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FILE *out_file;
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if (argc != 3 && argc != 4)
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{
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printf("usage:\n%s <state> <list> [vram_out]\n", argv[0]);
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return 1;
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}
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state_file = fopen(argv[1], "rb");
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fread(&state, 1, sizeof(gpu_dump_struct), state_file);
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fclose(state_file);
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list_file = fopen(argv[2], "rb");
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fseek(list_file, 0, SEEK_END);
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size = ftell(list_file);
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fseek(list_file, 0, SEEK_SET);
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list = (uint32_t *)malloc(size);
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fread(list, 1, size, list_file);
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fclose(list_file);
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pcnt_init();
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renderer_init();
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memcpy(gpu.vram, state.vram, 1024*512*2);
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if ((state.gpu_register[8] & 0x24) == 0x24)
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renderer_set_interlace(1, !(state.status >> 31));
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start_cycles = pcnt_get();
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do_cmd_list(list, size / 4, &dummy, &dummy);
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renderer_flush_queues();
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printf("%u\n", pcnt_get() - start_cycles);
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if (argc >= 4) {
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out_file = fopen(argv[3], "wb");
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fwrite(gpu.vram, 1, sizeof(gpu.vram), out_file);
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fclose(out_file);
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}
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return 0;
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}
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