user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<hexDump>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %esi,%ebp
  mov    %rdi,%rsi
  push   %rbx
  mov    %rdi,%rbx
  lea    D27(%rip),%rdi
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  call   <log_debug@plt>
  test   %ebp,%ebp
  je     L93
  js     L99
  movslq %ebp,%rax
  xor    %r15d,%r15d
  lea    D47(%rip),%r12
  mov    %rax,(%rsp)
  lea    0x10(%rsp),%rax
  lea    D66(%rip),%r14
  mov    %rax,0x8(%rsp)
  cs nopw 0x0(%rax,%rax,1)
L53:
  mov    %r15d,%r13d
  test   $0xf,%r15b
  jne    L87
  test   %r15,%r15
  je     L66
  mov    0x8(%rsp),%rsi
  lea    D18(%rip),%rdi
  xor    %eax,%eax
  call   <log_debug@plt>
L66:
  mov    %r13d,%esi
  mov    %r14,%rdi
  xor    %eax,%eax
  call   <log_debug@plt>
L87:
  movzbl (%rbx,%r15,1),%esi
  xor    %eax,%eax
  mov    %r12,%rdi
  call   <log_debug@plt>
  movzbl (%rbx,%r15,1),%eax
  lea    -0x20(%rax),%esi
  cmp    $0x5f,%sil
  mov    $0x2e,%esi
  cmovae %esi,%eax
  mov    %r13d,%esi
  add    $0x1,%r15
  and    $0xf,%esi
  mov    %al,0x10(%rsp,%rsi,1)
  movb   $0x0,0x11(%rsp,%rsi,1)
  cmp    (%rsp),%r15
  jne    L53
  lea    D74(%rip),%rbx
  test   $0xf,%bpl
  je     L1
  nopw   0x0(%rax,%rax,1)
L75:
  mov    %rbx,%rdi
  xor    %eax,%eax
  add    $0x1,%ebp
  call   <log_debug@plt>
  test   $0xf,%bpl
  jne    L75
L1:
  mov    0x8(%rsp),%rsi
  xor    %eax,%eax
  lea    D18(%rip),%rdi
  call   <log_debug@plt>
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L79
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L93:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L79
  add    $0x38,%rsp
  lea    D73(%rip),%rdi
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <log_debug@plt>
  nopl   0x0(%rax)
L99:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L79
  add    $0x38,%rsp
  mov    %ebp,%esi
  lea    D64(%rip),%rdi
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <log_debug@plt>
L79:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: label: D27
type: string
name: unpack_data
arguments: label: D47
type: string
name: unpack_data
arguments: label: D66
type: string
name: unpack_data
arguments: label: D18
type: string
name: unpack_data
arguments: label: D74
type: string
name: unpack_data
arguments: label: D73
type: string
name: unpack_data
arguments: label: D64
type: string

tool: D27: hexDump %p:


tool: D47:  %02x

tool: D66:   %04x 

tool: D18:   %s


tool: D74:    

tool: D73:   ZERO LENGTH


tool: D64:   NEGATIVE LENGTH: %i


assistant: ```c
void hexDump(void *addr, int len) {
  int i;
  unsigned char buff[17];
  unsigned char *pc = (unsigned char *)addr;
  (void)buff;
  log_debug("hexDump %p:\n", addr);
  if (len == 0) {
    log_debug("  ZERO LENGTH\n");
    return;
  }
  if (len < 0) {
    log_debug("  NEGATIVE LENGTH: %i\n", len);
    return;
  }
  for (i = 0; i < len; i++) {
    if ((i % 16) == 0) {
      if (i != 0) {
        log_debug("  %s\n", buff);
      }
      log_debug("  %04x ", i);
    }
    log_debug(" %02x", pc[i]);
    if ((pc[i] < 0x20) || (pc[i] > 0x7e)) {
      buff[i % 16] = '.';
    } else {
      buff[i % 16] = pc[i];
    }
    buff[(i % 16) + 1] = '\0';
  }
  while ((i % 16) != 0) {
    log_debug("   ");
    i++;
  }
  log_debug("  %s\n", buff);
}
```