user: 这段汇编代码用C语言表示是什么样的？

```asm
<fb_drawimage>:
  endbr64
  push   %r15
  push   %r14
  mov    %rdi,%r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %rsi,%rbp
  xor    %esi,%esi
  push   %rbx
  sub    $0x1b8,%rsp
  mov    0x1f8(%rsp),%rax
  mov    %edx,0x38(%rsp)
  mov    $0x100,%edx
  lea    0xa0(%rsp),%r15
  mov    %rdi,0x28(%rsp)
  mov    %r15,%rdi
  mov    0x1f0(%rsp),%r12d
  mov    %ecx,0x20(%rsp)
  mov    0x200(%rsp),%rbx
  mov    %r8d,0x3c(%rsp)
  mov    %r9d,0x34(%rsp)
  mov    %rax,0x18(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x1a8(%rsp)
  xor    %eax,%eax
  call   <memset@plt>
  mov    %r14,%rdi
  lea    D49(%rip),%rsi
  lea    0x50(%rsp),%r14
  call   <fopen@plt>
  mov    %rax,0x10(%rsp)
  lea    0x4c(%rsp),%rax
  mov    %rax,0x8(%rsp)
  nopl   0x0(%rax)
L121:
  mov    0x10(%rsp),%rdx
  mov    $0x50,%esi
  mov    %r14,%rdi
  call   <fgets@plt>
  test   %rax,%rax
  je     L49
L118:
  cmpb   $0x23,0x50(%rsp)
  je     L121
  mov    %r15,%rdi
  call   <strlen@plt>
  mov    %r14,%rdi
  mov    %eax,%r13d
  call   <strlen@plt>
  add    %eax,%r13d
  cmp    $0xff,%r13d
  ja     L86
L129:
  mov    %r14,%rsi
  mov    %r15,%rdi
  call   <strcat@plt>
  cmpb   $0x50,0xa0(%rsp)
  jne    L39
  cmpb   $0x36,0xa1(%rsp)
  je     L41
L39:
  mov    0x28(%rsp),%rsi
  lea    D54(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L41:
  mov    0x8(%rsp),%r8
  mov    0x18(%rsp),%rcx
  mov    %rbx,%rdx
  mov    %r15,%rdi
  lea    D7(%rip),%rsi
  call   <sscanf@plt>
  cmp    $0x3,%eax
  jne    L121
  mov    (%rbx),%eax
  lea    (%rax,%rax,2),%eax
  mov    %eax,%edi
  mov    %eax,0x30(%rsp)
  call   <malloc@plt>
  mov    %rax,%r15
  mov    0x18(%rsp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  je     L72
  mov    0x3c(%rsp),%eax
  mov    0x20(%rsp),%r13d
  mov    %r15,0x20(%rsp)
  movl   $0x0,0x8(%rsp)
  mov    0x38(%rsp),%r14d
  test   %eax,%eax
  lea    0x7(%rax),%r9d
  cmovns %eax,%r9d
  imul   0x34(%rsp),%r13d
  sar    $0x3,%r9d
  mov    %r9d,%r15d
  nopl   0x0(%rax,%rax,1)
L17:
  mov    0x10(%rsp),%rcx
  mov    0x30(%rsp),%edx
  mov    $0x1,%esi
  mov    0x20(%rsp),%rdi
  call   <fread@plt>
  cmp    0x30(%rsp),%eax
  je     L73
  mov    0x28(%rsp),%rsi
  lea    D54(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L73:
  mov    (%rbx),%esi
  movl   $0x0,0x4c(%rsp)
  xor    %edx,%edx
  mov    0x20(%rsp),%rcx
  test   %esi,%esi
  je     L109
  xchg   %ax,%ax
L27:
  mov    %r14d,%eax
  add    $0x3,%rcx
  sub    %esi,%eax
  movzbl (%rcx),%esi
  add    %r12d,%eax
  add    %edx,%eax
  add    $0x1,%edx
  imul   %r15d,%eax
  add    %r13d,%eax
  mov    %eax,%eax
  mov    %sil,0x0(%rbp,%rax,1)
  movzbl 0x1(%rcx),%esi
  mov    %sil,0x1(%rbp,%rax,1)
  movzbl 0x2(%rcx),%esi
  movb   $0xff,0x3(%rbp,%rax,1)
  mov    %sil,0x2(%rbp,%rax,1)
  mov    (%rbx),%esi
  mov    %edx,0x4c(%rsp)
  cmp    %esi,%edx
  jb     L27
L109:
  mov    0x18(%rsp),%rdi
  addl   $0x1,0x8(%rsp)
  add    0x34(%rsp),%r13d
  mov    0x8(%rsp),%eax
  cmp    %eax,(%rdi)
  ja     L17
  mov    0x20(%rsp),%r15
L72:
  mov    %r15,%rdi
  call   <free@plt>
  mov    0x10(%rsp),%rdi
  call   <fclose@plt>
  mov    0x1a8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L88
  add    $0x1b8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L86:
  mov    0x28(%rsp),%rsi
  lea    D54(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L129
L49:
  mov    0x28(%rsp),%rsi
  lea    D54(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L118
L88:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_label: D49
type_infered: string
name: read_data
arguments: data_label: D54
type_infered: string
name: read_data
arguments: data_label: D7
type_infered: string

tool: D49: r

tool: D54: bad PPM file '%s'

tool: D7: P6 %u %u %u

assistant: ```c
void fb_drawimage(const char *filename, char *fbp, int xo, int yo, int bpp, int length, int xres, unsigned *img_height, unsigned *img_width) {
  char head[256];
  char s[80];
  FILE *theme_file;
  unsigned char *pixline;
  unsigned i, j, line_size;
  memset(head, 0, sizeof(head));
  theme_file = fopen(filename, "r");
  while (1) {
    if (fgets(s, sizeof(s), theme_file) == NULL) {
      printf("bad PPM file '%s'", filename);
      exit(1);
    }
    if (s[0] == '#')
      continue;
    if (strlen(head) + strlen(s) >= sizeof(head)) {
      printf("bad PPM file '%s'", filename);
      exit(1);
    }
    strcat(head, s);
    if (head[0] != 'P' || head[1] != '6') {
      printf("bad PPM file '%s'", filename);
      exit(1);
    }
    if (sscanf(head, "P6 %u %u %u", img_width, img_height, &i) == 3)
      break;
  }
  line_size = *img_width * 3;
  long int location = 0;
  pixline = malloc(line_size);
  for (j = 0; j < *img_height; j++) {
    unsigned char *pixel = pixline;
    if (fread(pixline, 1, line_size, theme_file) != line_size) {
      printf("bad PPM file '%s'", filename);
      exit(1);
    }
    for (i = 0; i < *img_width; i++) {
      pixel += 3;
      location = ((xres - *img_width) + i + xo) * (bpp / 8) + (j + yo) * length;
      *(fbp + location) = (((unsigned)pixel[0]));
      *(fbp + location + 1) = (((unsigned)pixel[1]));
      *(fbp + location + 2) = (((unsigned)pixel[2]));
      *(fbp + location + 3) = -1;
    }
  }
  free(pixline);
  fclose(theme_file);
}
```