psxc/include/cpu.h

#ifndef PSXC_H_
#define PSXC_H_

#include <stdint.h>

#define REG_GP 28  // Global pointer
#define REG_SP 29  // Stack pointer
#define REG_FP 30  // Frame pointer

#define MAIN_RAM_SIZE 0x200000 * 4
#define SCRATCHPAD_BASE 0x1F800000
#define SCRATCHPAD_END 0x1F8003FF
#define SCRATCHPAD_SIZE (SCRATCHPAD_END - SCRATCHPAD_BASE + 1)

typedef struct {
    uint32_t regs[32];
    uint32_t pc;
    uint8_t main_ram[MAIN_RAM_SIZE];
    uint32_t sratchpad_ram[SCRATCHPAD_SIZE];
} cpu_t;

void cpu_write32(cpu_t *cpu, uint32_t addr, uint32_t x);

uint32_t cpu_read32(cpu_t *cpu, uint32_t addr);

#endif