user: Please show me the C implementation that matches the assembly code listed below:

```asm
<make_rel>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  movzbl (%rdi),%eax
  test   %al,%al
  jne    L27
  jmp    L81
  xchg   %ax,%ax
L161:
  test   %dl,%dl
  je     L155
  movzbl 0x1(%rdi),%eax
  add    $0x1,%rdi
  add    $0x1,%rsi
  test   %al,%al
  je     L81
L27:
  movzbl (%rsi),%edx
  cmp    %al,%dl
  je     L161
  test   %dl,%dl
  je     L155
  nopl   0x0(%rax,%rax,1)
L9:
  sub    $0x1,%rdi
  cmpb   $0x2f,(%rdi)
  jne    L9
  nopl   0x0(%rax)
L165:
  mov    %rsi,%r13
  lea    -0x1(%rsi),%rsi
  movzbl -0x1(%r13),%eax
  cmp    $0x2f,%al
  jne    L165
  xor    %ebx,%ebx
  nopw   0x0(%rax,%rax,1)
L12:
  cmp    $0x2f,%al
  sete   %al
  add    $0x1,%rdi
  movzbl %al,%eax
  add    %eax,%ebx
  movzbl (%rdi),%eax
  test   %al,%al
  jne    L12
  mov    %r13,%rdi
  lea    (%rbx,%rbx,2),%r15d
  call   <strlen@plt>
  mov    $0x529,%esi
  lea    D20(%rip),%rdi
  lea    0x1(%r15,%rax,1),%edx
  call   <safe_malloc@plt>
  mov    %rax,%r12
  test   %ebx,%ebx
  je     L116
  lea    (%rbx,%rbx,2),%rbx
  mov    %rax,%rbp
  lea    D10(%rip),%r14
  add    %rax,%rbx
  nopw   0x0(%rax,%rax,1)
L42:
  mov    %rbp,%rdi
  mov    $0x3,%edx
  mov    %r14,%rsi
  add    $0x3,%rbp
  call   <memcpy@plt>
  cmp    %rbx,%rbp
  jne    L42
L116:
  movslq %r15d,%rdi
  mov    %r13,%rsi
  add    %r12,%rdi
  call   <strcpy@plt>
L213:
  add    $0x18,%rsp
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L155:
  movzbl -0x1(%rdi),%eax
  sub    $0x1,%rdi
  cmp    $0x2f,%al
  jne    L155
  xor    %r15d,%r15d
  nop
L70:
  cmp    $0x2f,%al
  sete   %al
  add    $0x1,%rdi
  movzbl %al,%eax
  add    %eax,%r15d
  movzbl (%rdi),%eax
  test   %al,%al
  jne    L70
  lea    -0x1(%r15),%ebx
  mov    $0x50d,%esi
  lea    D20(%rip),%rdi
  lea    (%rbx,%rbx,2),%edx
  call   <safe_malloc@plt>
  mov    %rax,0x8(%rsp)
  mov    %rax,%r12
  test   %ebx,%ebx
  jle    L213
  sub    $0x2,%r15d
  test   %r15d,%r15d
  jle    L192
  cmp    %r15d,%ebx
  mov    %rax,%r13
  lea    D10(%rip),%r14
  cmovle %ebx,%r15d
  xor    %ebp,%ebp
  nopw   0x0(%rax,%rax,1)
L125:
  mov    %r13,%rdi
  mov    $0x3,%edx
  mov    %r14,%rsi
  call   <memcpy@plt>
  add    $0x1,%ebp
  add    $0x3,%r13
  cmp    %ebp,%r15d
  jg     L125
  cmp    %ebp,%ebx
  jle    L213
L59:
  lea    0x0(%rbp,%rbp,2),%eax
  cltq
  add    0x8(%rsp),%rax
  nop
L188:
  mov    $0x2e2e,%edx
  add    $0x1,%ebp
  movb   $0x0,0x2(%rax)
  add    $0x3,%rax
  mov    %dx,-0x3(%rax)
  cmp    %ebx,%ebp
  jl     L188
  jmp    L213
  nopl   (%rax)
L81:
  cmpb   $0x0,(%rsi)
  je     L123
  lea    0x1(%rsi),%rbp
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    $0x4fc,%esi
  lea    D20(%rip),%rdi
  lea    0x1(%rax),%edx
  call   <safe_malloc@plt>
  add    $0x18,%rsp
  mov    %rbp,%rsi
  pop    %rbx
  mov    %rax,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1080 <strcpy@plt>
  xchg   %ax,%ax
L192:
  xor    %ebp,%ebp
  jmp    L59
  nopl   0x0(%rax)
L123:
  lea    D30(%rip),%rdi
  call   <strlen@plt>
  mov    $0x4fa,%esi
  lea    D20(%rip),%rdi
  lea    0x1(%rax),%edx
  call   <safe_malloc@plt>
  movb   $0x0,(%rax)
  mov    %rax,%r12
  jmp    L213
```

tool_calls: name: unpack_data
arguments: label: D20
type_guessed: string
name: unpack_data
arguments: label: D10
type_guessed: string
name: unpack_data
arguments: label: D30
type_guessed: string

tool: D20: /scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/rc0/spill/refs/heads/master/spill.c

tool: D10: ../

tool: 

assistant: ```c
char *make_rel(const char *src, const char *dest) {
  const char *p, *q;
  p = src, q = dest;
  while (*p && *q && (*p == *q))
    p++, q++;
  if (!*p && !*q) {
    return strcpy((char *)safe_malloc("/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/rc0/spill/refs/heads/master/spill.c", 1274, 1 + strlen("")), (""));
  } else if (!*p) {
    return strcpy((char *)safe_malloc("/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/rc0/spill/refs/heads/master/spill.c", 1276, 1 + strlen(q + 1)), (q + 1));
  } else if (!*q) {
    int slashes, i;
    int len;
    char *res;
    while (*--p != '/')
      ;
    slashes = 0;
    while (*p) {
      if (*p == '/')
        slashes++;
      p++;
    }
    slashes--;
    len = 3 * slashes - 1;
    res = (char *)safe_malloc("/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/rc0/spill/refs/heads/master/spill.c", 1293, sizeof(char) * (len + 1));
    for (i = 0; i < slashes; i++) {
      if (i < (slashes - 1)) {
        memcpy(res + (3 * i), "../", 3);
      } else {
        strcpy(res + (3 * i), "..");
      }
    }
    return res;
  } else {
    int slashes, i;
    int len;
    char *res;
    while (*--p != '/')
      ;
    while (*--q != '/')
      ;
    slashes = 0;
    while (*p) {
      if (*p == '/')
        slashes++;
      p++;
    }
    q++;
    len = 3 * slashes + strlen(q);
    res = (char *)safe_malloc("/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/rc0/spill/refs/heads/master/spill.c", 1321, sizeof(char) * (len + 1));
    for (i = 0; i < slashes; i++) {
      memcpy(res + (3 * i), "../", 3);
    }
    strcpy(res + (3 * slashes), q);
    return res;
  }
}
```