user: What is the c source code of the assembly code below:

```asm
<markcities>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x470,%rsp
  mov    %rdi,-0x458(%rbp)
  mov    %rsi,-0x460(%rbp)
  mov    %rdx,-0x468(%rbp)
  mov    %ecx,-0x46c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D27(%rip),%rax
  mov    %rax,%rsi
  lea    D19(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x448(%rbp)
  cmpq   $0x0,-0x448(%rbp)
  jne    L80
  lea    D28(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  jmp    L80
L153:
  movb   $0x0,-0x11(%rbp)
  lea    -0x410(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cltq
  movzbl -0x410(%rbp,%rax,1),%eax
  cmp    $0xd,%al
  jne    L143
  lea    -0x410(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cltq
  movb   $0x0,-0x410(%rbp,%rax,1)
L143:
  lea    -0x410(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cltq
  movzbl -0x410(%rbp,%rax,1),%eax
  cmp    $0xa,%al
  jne    L128
  lea    -0x410(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  cltq
  movb   $0x0,-0x410(%rbp,%rax,1)
L128:
  lea    -0x410(%rbp),%rax
  mov    $0x2c,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x440(%rbp)
  cmpq   $0x0,-0x440(%rbp)
  jne    L120
  jmp    L80
L120:
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x438(%rbp)
  mov    -0x438(%rbp),%rax
  mov    $0x2c,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x440(%rbp)
  cmpq   $0x0,-0x440(%rbp)
  jne    L48
  jmp    L80
L48:
  mov    -0x440(%rbp),%rax
  movb   $0x0,(%rax)
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    $0x2c,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x440(%rbp)
  cmpq   $0x0,-0x440(%rbp)
  jne    L89
  jmp    L80
L89:
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    $0x2c,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x440(%rbp)
  cmpq   $0x0,-0x440(%rbp)
  jne    L87
  jmp    L80
L87:
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x430(%rbp)
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    $0x2c,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x440(%rbp)
  cmpq   $0x0,-0x440(%rbp)
  jne    L54
  jmp    L80
L54:
  mov    -0x440(%rbp),%rax
  movb   $0x0,(%rax)
  mov    -0x440(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x428(%rbp)
  mov    -0x430(%rbp),%rax
  mov    %rax,%rdi
  call   <atof@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x420(%rbp)
  mov    -0x428(%rbp),%rax
  mov    %rax,%rdi
  call   <atof@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x418(%rbp)
  mov    -0x46c(%rbp),%ecx
  mov    -0x438(%rbp),%rdx
  movsd  -0x418(%rbp),%xmm0
  mov    -0x420(%rbp),%rdi
  mov    -0x460(%rbp),%rsi
  mov    -0x458(%rbp),%rax
  movapd %xmm0,%xmm1
  movq   %rdi,%xmm0
  mov    %rax,%rdi
  call   <marklocation@plt>
L80:
  mov    -0x448(%rbp),%rdx
  lea    -0x410(%rbp),%rax
  mov    $0x400,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  test   %rax,%rax
  jne    L153
  mov    -0x448(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L116
  call   <__stack_chk_fail@plt>
L116:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D27
type_infered: string
name: retrieve_data
arguments: data_label: D19
type_infered: string
name: retrieve_data
arguments: data_label: D28
type_infered: string

tool: D27: r

tool: D19: cities_it.txt

tool: D28: Can't open cities_it.txt

assistant: ```c
void markcities(struct raster *ra, struct hgt *hgt, char *pattern, int fontsize) {
  FILE *fp;
  char buf[1024];
  pattern = pattern;
  fp = fopen("cities_it.txt", "r");
  if (!fp)
    perror("Can't open cities_it.txt");
  while (fgets(buf, 1024, fp) != NULL) {
    char *name, *slat, *slon, *p;
    double lat, lon;
    buf[1023] = '\0';
    if (buf[strlen(buf) - 1] == '\r')
      buf[strlen(buf) - 1] = '\0';
    if (buf[strlen(buf) - 1] == '\n')
      buf[strlen(buf) - 1] = '\0';
    p = strchr(buf, ',');
    if (!p)
      continue;
    name = p + 1;
    p = strchr(name, ',');
    if (!p)
      continue;
    *p = '\0';
    p = strchr(p + 1, ',');
    if (!p)
      continue;
    p = strchr(p + 1, ',');
    if (!p)
      continue;
    slat = p + 1;
    p = strchr(p + 1, ',');
    if (!p)
      continue;
    *p = '\0';
    slon = p + 1;
    lat = atof(slat);
    lon = atof(slon);
    marklocation(ra, hgt, lat, lon, name, fontsize);
  }
  fclose(fp);
}
```