user: 请从给定的汇编指令推导出C源代码:

```asm
<readtga>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %rdx,-0x78(%rbp)
  mov    %rcx,-0x80(%rbp)
  mov    -0x68(%rbp),%rax
  lea    D0(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fopen@plt>
  cltq
  mov    %rax,-0x28(%rbp)
  cmpq   $0x0,-0x28(%rbp)
  jne    L93
  mov    $0x1,%eax
  jmp    L88
L93:
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x5c(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x58(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x54(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x50(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x4c(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x48(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <_IO_getc@plt>
  mov    %eax,-0x44(%rbp)
  cmpl   $0x2,-0x5c(%rbp)
  jne    L29
  cmpl   $0x18,-0x48(%rbp)
  je     L19
  jmp    L16
L29:
  nop
L16:
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fclose@plt>
  mov    $0x2,%eax
  jmp    L88
L19:
  mov    -0x54(%rbp),%eax
  shl    $0x8,%eax
  or     -0x58(%rbp),%eax
  mov    %eax,-0x40(%rbp)
  mov    -0x4c(%rbp),%eax
  shl    $0x8,%eax
  or     -0x50(%rbp),%eax
  mov    %eax,-0x3c(%rbp)
  mov    -0x40(%rbp),%eax
  imul   -0x3c(%rbp),%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  mov    %eax,-0x38(%rbp)
  mov    -0x38(%rbp),%eax
  cltq
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x20(%rbp)
  mov    -0x80(%rbp),%rax
  mov    -0x20(%rbp),%rdx
  mov    %rdx,(%rax)
  mov    -0x38(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rax
  mov    -0x28(%rbp),%rcx
  mov    $0x1,%esi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fread@plt>
  cltq
  mov    %rax,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %eax,-0x34(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fclose@plt>
  cmpl   $0x20,-0x44(%rbp)
  jne    L75
  mov    -0x40(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  mov    %eax,-0x30(%rbp)
  mov    -0x30(%rbp),%eax
  cltq
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x60(%rbp)
  jmp    L17
L66:
  mov    -0x30(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rcx
  mov    -0x30(%rbp),%eax
  imul   -0x60(%rbp),%eax
  cltq
  add    %rax,%rcx
  mov    -0x8(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  mov    -0x30(%rbp),%eax
  cltq
  mov    -0x80(%rbp),%rdx
  mov    (%rdx),%rcx
  mov    -0x3c(%rbp),%edx
  sub    $0x1,%edx
  sub    -0x60(%rbp),%edx
  imul   -0x30(%rbp),%edx
  movslq %edx,%rdx
  lea    (%rcx,%rdx,1),%rsi
  mov    -0x80(%rbp),%rdx
  mov    (%rdx),%rcx
  mov    -0x30(%rbp),%edx
  imul   -0x60(%rbp),%edx
  movslq %edx,%rdx
  add    %rdx,%rcx
  mov    %rax,%rdx
  mov    %rcx,%rdi
  call   <memcpy@plt>
  mov    -0x30(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rcx
  mov    -0x3c(%rbp),%eax
  sub    $0x1,%eax
  sub    -0x60(%rbp),%eax
  imul   -0x30(%rbp),%eax
  cltq
  add    %rax,%rcx
  mov    -0x8(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
  addl   $0x1,-0x60(%rbp)
L17:
  mov    -0x3c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    %eax,-0x60(%rbp)
  jl     L66
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
L75:
  movl   $0x0,-0x60(%rbp)
  jmp    L8
L102:
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rdx
  mov    -0x60(%rbp),%eax
  cltq
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x2c(%rbp)
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rdx
  mov    -0x60(%rbp),%eax
  add    $0x2,%eax
  cltq
  lea    (%rdx,%rax,1),%rcx
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rdx
  mov    -0x60(%rbp),%eax
  cltq
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  mov    -0x80(%rbp),%rax
  mov    (%rax),%rdx
  mov    -0x60(%rbp),%eax
  add    $0x2,%eax
  cltq
  add    %rdx,%rax
  mov    -0x2c(%rbp),%edx
  mov    %dl,(%rax)
  addl   $0x3,-0x60(%rbp)
L8:
  mov    -0x60(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jl     L102
  mov    -0x70(%rbp),%rax
  mov    -0x40(%rbp),%edx
  mov    %edx,(%rax)
  mov    -0x78(%rbp),%rax
  mov    -0x3c(%rbp),%edx
  mov    %edx,(%rax)
  mov    -0x34(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  je     L52
  mov    $0x4,%eax
  jmp    L88
L52:
  mov    $0x0,%eax
L88:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D0
type_guessed: string

tool: D0: r

assistant: ```c
signed int readtga(char *name, signed int *xres, signed int *yres, unsigned char **imgdata) {
  signed int format;
  signed int width;
  signed int height;
  signed int w1;
  signed int w2;
  signed int h1;
  signed int h2;
  signed int depth;
  signed int flags;
  signed int imgsize;
  signed int bytesread;
  signed int i;
  signed int tmp;
  struct _IO_FILE$link43 *ifp;
  ifp = fopen(name, "r");
  if (ifp == ((struct _IO_FILE$link43 *)((void *)0)))
    return 1;
  _IO_getc(ifp);
  _IO_getc(ifp);
  format = _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  _IO_getc(ifp);
  w1 = _IO_getc(ifp);
  w2 = _IO_getc(ifp);
  h1 = _IO_getc(ifp);
  h2 = _IO_getc(ifp);
  depth = _IO_getc(ifp);
  flags = _IO_getc(ifp);
  if (format == 2) {
    if (depth != 24)
      goto __CPROVER_DUMP_L2;
  } else {
  __CPROVER_DUMP_L2:;
    fclose(ifp);
    return 2;
  }
  width = w2 << 8 | w1;
  height = h2 << 8 | h1;
  imgsize = 3 * width * height;
  void *return_value_malloc$1;
  return_value_malloc$1 = malloc((unsigned long int)imgsize);
  *imgdata = (unsigned char *)return_value_malloc$1;
  unsigned long int return_value_fread$2;
  return_value_fread$2 = fread((void *)*imgdata, (unsigned long int)1, (unsigned long int)imgsize, ifp);
  bytesread = (signed int)return_value_fread$2;
  fclose(ifp);
  if (flags == 32) {
    signed int rowsize = 3 * width;
    unsigned char *copytmp;
    void *return_value_malloc$3;
    return_value_malloc$3 = malloc((unsigned long int)rowsize);
    copytmp = (unsigned char *)return_value_malloc$3;
    i = 0;
    while (!(i >= height / 2)) {
      memcpy((void *)copytmp, (const void *)&(*imgdata)[(signed long int)(rowsize * i)], (unsigned long int)rowsize);
      memcpy((void *)&(*imgdata)[(signed long int)(rowsize * i)], (const void *)&(*imgdata)[(signed long int)(rowsize * ((height - 1) - i))], (unsigned long int)rowsize);
      memcpy((void *)&(*imgdata)[(signed long int)(rowsize * ((height - 1) - i))], (const void *)copytmp, (unsigned long int)rowsize);
      i = i + 1;
    }
    free((void *)copytmp);
  }
  i = 0;
  while (!(i >= imgsize)) {
    tmp = (signed int)(*imgdata)[(signed long int)i];
    (*imgdata)[(signed long int)i] = (*imgdata)[(signed long int)(i + 2)];
    (*imgdata)[(signed long int)(i + 2)] = (unsigned char)tmp;
    i = i + 3;
  }
  *xres = width;
  *yres = height;
  if (!(bytesread == imgsize))
    return 4;
  return 0;
}
```