user: 下面的汇编指令对应的C源代码是什么:

```asm
<PrintNum>:
  endbr64
  push   %r13
  mov    %ecx,%r10d
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  movslq %edx,%rdi
  mov    %rbx,%rcx
  sub    $0x8,%rsp
  mov    0x30(%rsp),%r11d
  mov    0x38(%rsp),%ebp
  jmp    L82
  nopl   (%rax)
L100:
  add    $0x30,%edx
  mov    %dl,-0x1(%rcx)
  cmp    %rsi,%rdi
  ja     L68
L148:
  mov    %rax,%rsi
L82:
  mov    %rsi,%rax
  xor    %edx,%edx
  mov    %rcx,%r12
  add    $0x1,%rcx
  div    %rdi
  cmp    $0x9,%edx
  jle    L100
  lea    0x37(%rdx),%r13d
  add    $0x57,%edx
  test   %ebp,%ebp
  cmovne %r13d,%edx
  mov    %dl,-0x1(%rcx)
  cmp    %rsi,%rdi
  jbe    L148
L68:
  test   %r10d,%r10d
  je     L24
  movb   $0x2d,(%rcx)
  lea    0x2(%r12),%rcx
  sub    %rbx,%rcx
  mov    %ecx,%r12d
  cmp    %ecx,%r8d
  mov    %ecx,%ebp
  cmovge %r8d,%r12d
  test   %r9d,%r9d
  je     L55
L79:
  cmp    %ebp,%r12d
  jle    L137
  mov    %r12d,%eax
  movslq %ebp,%rdi
  mov    $0x20,%esi
  sub    %ecx,%eax
  add    %rbx,%rdi
  lea    -0x1(%rax),%edx
  add    $0x1,%rdx
  call   <memset@plt>
L137:
  lea    -0x1(%rbp),%r13d
L33:
  movslq %r13d,%rdx
  xor    %eax,%eax
  test   %r13d,%r13d
  jle    L141
  nopw   0x0(%rax,%rax,1)
L1:
  movzbl (%rbx,%rax,1),%ecx
  movzbl (%rbx,%rdx,1),%esi
  mov    %sil,(%rbx,%rax,1)
  add    $0x1,%rax
  mov    %cl,(%rbx,%rdx,1)
  sub    $0x1,%rdx
  cmp    %edx,%eax
  jl     L1
L141:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L24:
  sub    %rbx,%rcx
  mov    %ecx,%r12d
  cmp    %ecx,%r8d
  mov    %ecx,%ebp
  cmovge %r8d,%r12d
  test   %r9d,%r9d
  jne    L79
L28:
  cmp    %ebp,%r12d
  jle    L46
  mov    %r12d,%eax
  movslq %ebp,%rdi
  movsbl %r11b,%esi
  sub    %ecx,%eax
  add    %rbx,%rdi
  lea    -0x1(%rax),%edx
  add    $0x1,%rdx
  call   <memset@plt>
L46:
  lea    -0x1(%r12),%r13d
  jmp    L33
  nopl   0x0(%rax,%rax,1)
L55:
  cmp    $0x30,%r11b
  jne    L28
  lea    -0x1(%rcx),%eax
  lea    -0x1(%r12),%r13d
  cmp    %ecx,%r12d
  jle    L117
  mov    %r12d,%edx
  cltq
  mov    $0x30,%esi
  sub    %ecx,%edx
  lea    (%rbx,%rax,1),%rdi
  sub    $0x1,%edx
  add    $0x1,%rdx
  call   <memset@plt>
L117:
  movslq %r12d,%rax
  movb   $0x2d,-0x1(%rbx,%rax,1)
  jmp    L33
```

assistant: ```c
int PrintNum(char *buf, unsigned long u, int base, int negFlag, int length, int ladjust, char padc, int upcase) {
  int actualLength = 0;
  char *p = buf;
  int i;
  do {
    int tmp = u % base;
    if (tmp <= 9) {
      *p++ = '0' + tmp;
    } else if (upcase) {
      *p++ = 'A' + tmp - 10;
    } else {
      *p++ = 'a' + tmp - 10;
    }
    u /= base;
  } while (u != 0);
  if (negFlag) {
    *p++ = '-';
  }
  actualLength = p - buf;
  if (length < actualLength)
    length = actualLength;
  if (ladjust) {
    padc = ' ';
  }
  if (negFlag && !ladjust && (padc == '0')) {
    for (i = actualLength - 1; i < length - 1; i++)
      buf[i] = padc;
    buf[length - 1] = '-';
  } else {
    for (i = actualLength; i < length; i++)
      buf[i] = padc;
  }
  {
    int begin = 0;
    int end;
    if (ladjust) {
      end = actualLength - 1;
    } else {
      end = length - 1;
    }
    while (end > begin) {
      char tmp = buf[begin];
      buf[begin] = buf[end];
      buf[end] = tmp;
      begin++;
      end--;
    }
  }
  return length;
}
```