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

```asm
<dumpBytes>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %esi,0x18(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  jle    L7
  mov    %esi,%ebx
  mov    %rdi,%r14
  mov    $0xa,%edi
  xor    %r12d,%r12d
  call   <putchar@plt>
  lea    -0x1(%rbx),%eax
  movl   $0x0,0x14(%rsp)
  lea    0x1f(%rsp),%rbx
  mov    %eax,0x1c(%rsp)
  lea    D19(%rip),%r15
  nopl   0x0(%rax,%rax,1)
L117:
  mov    0x14(%rsp),%esi
  lea    D33(%rip),%rdi
  xor    %eax,%eax
  mov    %r12d,%r13d
  call   <printf@plt>
  mov    0x1c(%rsp),%ebp
  sub    %r12d,%ebp
  lea    0x1(%rbp),%rax
  mov    $0x1,%ebp
  mov    %rax,0x8(%rsp)
  jmp    L97
  nopl   0x0(%rax)
L160:
  add    $0x1,%rbp
L97:
  mov    %r14,%rdi
  lea    0x0(%r13,%rbp,1),%r12d
  call   <readUInt8@plt>
  mov    %r15,%rdi
  mov    %al,(%rbx,%rbp,1)
  movzbl %al,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %ebp,%ecx
  cmp    0x8(%rsp),%rbp
  je     L156
  cmp    $0x10,%rbp
  je     L39
  cmp    $0x8,%ebp
  jne    L160
  mov    $0x20,%edi
  call   <putchar@plt>
  jmp    L160
  nopl   (%rax)
L39:
  lea    D9(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x10,%ecx
L31:
  movslq %ecx,%rbp
  mov    $0x1,%r13d
  jmp    L8
  cs nopw 0x0(%rax,%rax,1)
L34:
  add    $0x1,%r13
L8:
  movzbl (%rbx,%r13,1),%edi
  lea    -0x20(%rdi),%eax
  cmp    $0x5f,%al
  jbe    L128
  mov    $0x2e,%edi
L128:
  call   <putchar@plt>
  cmp    %r13,%rbp
  je     L121
  cmp    $0x8,%r13d
  jne    L34
  mov    $0x20,%edi
  call   <putchar@plt>
  jmp    L34
  nopl   0x0(%rax)
L121:
  mov    $0xa,%edi
  call   <putchar@plt>
  cmp    %r12d,0x18(%rsp)
  je     L174
  addl   $0x1,0x14(%rsp)
  jmp    L117
  nopl   0x0(%rax,%rax,1)
L156:
  cmp    $0x10,%ebp
  je     L118
  mov    %ebp,%r13d
L36:
  xor    %eax,%eax
  lea    D9(%rip),%rdi
  add    $0x1,%r13d
  mov    %ecx,0x8(%rsp)
  call   <printf@plt>
  cmp    $0x10,%r13d
  mov    0x8(%rsp),%ecx
  jne    L36
L118:
  lea    D9(%rip),%rdi
  xor    %eax,%eax
  mov    %ecx,0x8(%rsp)
  call   <printf@plt>
  mov    0x8(%rsp),%ecx
  jmp    L31
  nopl   0x0(%rax,%rax,1)
L174:
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L52
  add    $0x48,%rsp
  mov    $0xa,%edi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1080 <putchar@plt>
L7:
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L52
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L52:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: label: D19
type: string
name: extract_symbolic_data
arguments: label: D33
type: string
name: extract_symbolic_data
arguments: label: D9
type: string

tool: D19: %02x 

tool: D33: %03x0: 

tool: D9:    

assistant: ```c
void dumpBytes(FILE *f, int length) {
  int j = 0, i, k, l = 0;
  unsigned char buf[16];
  if (length <= 0)
    return;
  putchar('\n');
  for (;; ++l) {
    printf("%03x0: ", l);
    for (i = 0; i < 16; ++i) {
      if (i == 8)
        putchar(' ');
      printf("%02x ", buf[i] = readUInt8(f));
      ++j;
      if (j == length)
        break;
    }
    if (j == length) {
      for (k = i + 1; k < 16; ++k)
        printf("   ");
      if (k == 8)
        putchar(' ');
      ++i;
    }
    printf("   ");
    for (k = 0; k < i; ++k) {
      if (k == 8)
        putchar(' ');
      if ((buf[k] > 31) && (buf[k] < 128))
        putchar(buf[k]);
      else
        putchar('.');
    }
    putchar('\n');
    if (j == length)
      break;
  }
  putchar('\n');
  putchar('\n');
}
```