user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<image_crop_rgb24>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %esi,-0x28(%rbp)
  mov    %rdx,-0x30(%rbp)
  mov    %ecx,-0x34(%rbp)
  mov    %r8d,-0x38(%rbp)
  mov    %r9d,-0x3c(%rbp)
  mov    -0x34(%rbp),%eax
  imul   -0x38(%rbp),%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x34(%rbp),%eax
  imul   -0x38(%rbp),%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movl   $0x0,-0x1c(%rbp)
  jmp    L46
L78:
  mov    -0x1c(%rbp),%edx
  mov    0x10(%rbp),%eax
  add    %edx,%eax
  imul   -0x24(%rbp),%eax
  mov    %eax,%edx
  mov    -0x3c(%rbp),%eax
  add    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  mov    %eax,-0x18(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    0x10(%rbp),%eax
  add    %edx,%eax
  test   %eax,%eax
  js     L6
  mov    -0x1c(%rbp),%edx
  mov    0x10(%rbp),%eax
  add    %edx,%eax
  cmp    %eax,-0x28(%rbp)
  jle    L6
  movl   $0x0,-0x20(%rbp)
  jmp    L64
L72:
  mov    -0x20(%rbp),%edx
  mov    -0x3c(%rbp),%eax
  add    %edx,%eax
  test   %eax,%eax
  js     L55
  mov    -0x20(%rbp),%edx
  mov    -0x3c(%rbp),%eax
  add    %edx,%eax
  cmp    %eax,-0x24(%rbp)
  jle    L55
  mov    -0x34(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x20(%rbp),%eax
  add    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x20(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %eax,%edx
  mov    -0x18(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x8(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x20(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %eax,%edx
  mov    -0x18(%rbp),%eax
  add    %edx,%eax
  add    $0x1,%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  add    $0x1,%edx
  movslq %edx,%rcx
  mov    -0x8(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  mov    -0x20(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %eax,%edx
  mov    -0x18(%rbp),%eax
  add    %edx,%eax
  add    $0x2,%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  add    $0x2,%edx
  movslq %edx,%rcx
  mov    -0x8(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
L55:
  addl   $0x1,-0x20(%rbp)
L64:
  mov    -0x20(%rbp),%eax
  cmp    -0x34(%rbp),%eax
  jl     L72
L6:
  addl   $0x1,-0x1c(%rbp)
L46:
  mov    -0x1c(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jl     L78
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
unsigned char *image_crop_rgb24(signed int xres, signed int yres, unsigned char *img, signed int szx, signed int szy, signed int sx, signed int sy) {
  unsigned char *cropped;
  signed int x;
  signed int y;
  void *return_value_malloc$1;
  return_value_malloc$1 = malloc((unsigned long int)(szx * szy * 3) * 1ul);
  cropped = (unsigned char *)return_value_malloc$1;
  memset((void *)cropped, 0, (unsigned long int)(szx * szy * 3) * 1ul);
  y = 0;
  while (!(y >= szy)) {
    signed int oaddr = ((y + sy) * xres + sx) * 3;
    if (y + sy >= 0) {
      if (!(y + sy >= yres)) {
        x = 0;
        while (!(x >= szx)) {
          if (x + sx >= 0) {
            if (!(x + sx >= xres)) {
              signed int addr = (szx * y + x) * 3;
              cropped[(signed long int)addr] = img[(signed long int)(oaddr + x * 3)];
              cropped[(signed long int)(addr + 1)] = img[(signed long int)(oaddr + x * 3 + 1)];
              cropped[(signed long int)(addr + 2)] = img[(signed long int)(oaddr + x * 3 + 2)];
            }
          }
          x = x + 1;
        }
      }
    }
    y = y + 1;
  }
  return cropped;
}
```