#include <stdint.h>
#include <string.h>

#include "frida-gumjs.h"

#if defined(__x86_64__)

void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
                         uint32_t input_buf_len) {

  memcpy((void *)regs->rdi, input_buf, input_buf_len);
  regs->rsi = input_buf_len;

}

#elif defined(__i386__)

void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
                         uint32_t input_buf_len) {

  void **esp = (void **)regs->esp;
  void * arg1 = esp[0];
  void **arg2 = &esp[1];
  memcpy(arg1, input_buf, input_buf_len);
  *arg2 = (void *)input_buf_len;

}

#elif defined(__aarch64__)

void afl_persistent_hook(GumCpuContext *regs, uint8_t *input_buf,
                         uint32_t input_buf_len) {

  memcpy((void *)regs->x[0], input_buf, input_buf_len);
  regs->x[1] = input_buf_len;

}

#else
  #pragma error "Unsupported architecture"
#endif

int afl_persistent_hook_init(void) {

  // 1 for shared memory input (faster), 0 for normal input (you have to use
  // read(), input_buf will be NULL)
  return 1;

}