user: 这段汇编代码用C语言表示是什么样的：

```asm
<notmain>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    $0x0,%eax
  call   <leds_off@plt>
  mov    $0x0,%eax
  call   <uart_init@plt>
  mov    $0x12345678,%edi
  call   <hexstring@plt>
  mov    $0x0,%eax
  call   <GETPC@plt>
  mov    %eax,%edi
  call   <hexstring@plt>
  mov    $0x0,%eax
  call   <GETCPSR@plt>
  mov    %eax,%edi
  call   <hexstring@plt>
  mov    $0x0,%eax
  call   <GETSCTLR@plt>
  mov    %eax,%edi
  call   <hexstring@plt>
  mov    $0x49,%edi
  call   <uart_send@plt>
  mov    $0x48,%edi
  call   <uart_send@plt>
  mov    $0x45,%edi
  call   <uart_send@plt>
  mov    $0x58,%edi
  call   <uart_send@plt>
  mov    $0xd,%edi
  call   <uart_send@plt>
  mov    $0xa,%edi
  call   <uart_send@plt>
  mov    $0x0,%r15d
  mov    $0x0,%r14d
  mov    $0x0,%r13d
  mov    $0x0,%r12d
  movl   $0x0,0xc(%rsp)
  mov    $0x0,%ebx
  lea    D6(%rip),%rbp
  jmp    L174
L140:
  mov    $0x1,%ebx
  jmp    L174
L123:
  mov    $0x0,%ebx
L174:
  mov    $0x0,%eax
  call   <uart_recv@plt>
  cmp    $0x3a,%eax
  je     L140
  cmp    $0xa,%eax
  je     L123
  cmp    $0xd,%eax
  je     L123
  mov    %eax,%edx
  and    $0xffffffdf,%edx
  cmp    $0x47,%edx
  je     L83
  cmp    $0x15,%ebx
  ja     L174
  mov    %ebx,%edx
  movslq 0x0(%rbp,%rdx,4),%rdx
  add    %rbp,%rdx
  notrack jmp *%rdx
  add    $0x1,%ebx
  jmp    L174
  mov    0xc(%rsp),%edx
  shl    $0x4,%edx
  lea    -0x7(%rax),%ecx
  cmp    $0x39,%eax
  cmova  %ecx,%eax
  and    $0xf,%eax
  or     %edx,%eax
  movzwl %ax,%eax
  or     %r13d,%eax
  mov    %eax,0xc(%rsp)
  add    $0x1,%ebx
  jmp    L174
  shl    $0x4,%r12d
  lea    -0x7(%rax),%edx
  cmp    $0x39,%eax
  cmova  %edx,%eax
  and    $0xf,%eax
  or     %r12d,%eax
  movzbl %al,%r12d
  mov    $0x8,%ebx
  jmp    L174
  shl    $0x4,%r12d
  lea    -0x7(%rax),%edx
  cmp    $0x39,%eax
  cmova  %edx,%eax
  and    $0xf,%eax
  or     %r12d,%eax
  movzbl %al,%r12d
  cmp    $0x1,%al
  je     L77
  mov    $0x9,%ebx
  cmp    $0x2,%r12d
  je     L174
  cmp    $0x1,%r12d
  sbb    %ebx,%ebx
  and    $0xe,%ebx
  jmp    L174
L77:
  mov    $0x14,%ebx
L139:
  mov    %r15d,%edi
  call   <hexstring@plt>
  sub    $0x1,%ebx
  jne    L139
  mov    %ebx,%r15d
  mov    %ebx,%r14d
  mov    %ebx,%r13d
  mov    %ebx,%r12d
  mov    %ebx,0xc(%rsp)
  jmp    L174
  shl    $0x4,%r13d
  lea    -0x7(%rax),%edx
  cmp    $0x39,%eax
  cmova  %edx,%eax
  and    $0xf,%eax
  or     %r13d,%eax
  movzwl %ax,%r13d
  add    $0x1,%ebx
  jmp    L174
  shl    $0x4,%r13d
  mov    $0x0,%ebx
  jmp    L174
  shl    $0x4,%r14d
  lea    -0x7(%rax),%edx
  cmp    $0x39,%eax
  cmova  %edx,%eax
  and    $0xf,%eax
  or     %eax,%r14d
  cmp    $0x15,%ebx
  je     L70
  add    $0x1,%ebx
  jmp    L174
L70:
  mov    %r14d,%edx
  shr    $0x18,%edx
  mov    %r14d,%eax
  shl    $0x18,%eax
  or     %eax,%edx
  mov    %r14d,%eax
  shr    $0x8,%eax
  and    $0xff00,%eax
  or     %edx,%eax
  shl    $0x8,%r14d
  and    $0xff0000,%r14d
  or     %eax,%r14d
  mov    %r14d,%esi
  mov    0xc(%rsp),%ebx
  mov    %ebx,%edi
  call   <PUT32@plt>
  add    %ebx,%r15d
  add    %r14d,%r15d
  mov    %ebx,%eax
  add    $0x4,%eax
  mov    %eax,0xc(%rsp)
  mov    $0xe,%ebx
  jmp    L174
L83:
  mov    $0xd,%edi
  call   <uart_send@plt>
  mov    $0x2d,%edi
  call   <uart_send@plt>
  mov    $0x2d,%edi
  call   <uart_send@plt>
  mov    $0xd,%edi
  call   <uart_send@plt>
  mov    $0xa,%edi
  call   <uart_send@plt>
  mov    $0xa,%edi
  call   <uart_send@plt>
  mov    $0x8000,%edi
  call   <BRANCHTO@plt>
  mov    $0x0,%eax
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
int notmain(void) {
  unsigned int state;
  unsigned int byte_count;
  unsigned int address;
  unsigned int record_type;
  unsigned int segment;
  unsigned int data;
  unsigned int sum;
  unsigned int ra;
  leds_off();
  uart_init();
  hexstring(0x12345678);
  hexstring(GETPC());
  hexstring(GETCPSR());
  hexstring(GETSCTLR());
  uart_send('I');
  uart_send('H');
  uart_send('E');
  uart_send('X');
  uart_send(0x0D);
  uart_send(0x0A);
  state = 0;
  segment = 0;
  sum = 0;
  data = 0;
  record_type = 0;
  address = 0;
  byte_count = 0;
  while (1) {
    ra = uart_recv();
    if (ra == ':') {
      state = 1;
      continue;
    }
    if (ra == 0x0D) {
      state = 0;
      continue;
    }
    if (ra == 0x0A) {
      state = 0;
      continue;
    }
    if ((ra == 'g') || (ra == 'G')) {
      uart_send(0x0D);
      uart_send('-');
      uart_send('-');
      uart_send(0x0D);
      uart_send(0x0A);
      uart_send(0x0A);
      BRANCHTO(0x8000);
      state = 0;
      break;
    }
    switch (state) {
    case 0: {
      break;
    }
    case 1:
    case 2: {
      byte_count <<= 4;
      if (ra > 0x39)
        ra -= 7;
      byte_count |= (ra & 0xF);
      byte_count &= 0xFF;
      state++;
      break;
    }
    case 3:
    case 4:
    case 5:
    case 6: {
      address <<= 4;
      if (ra > 0x39)
        ra -= 7;
      address |= (ra & 0xF);
      address &= 0xFFFF;
      address |= segment;
      state++;
      break;
    }
    case 7: {
      record_type <<= 4;
      if (ra > 0x39)
        ra -= 7;
      record_type |= (ra & 0xF);
      record_type &= 0xFF;
      state++;
      break;
    }
    case 8: {
      record_type <<= 4;
      if (ra > 0x39)
        ra -= 7;
      record_type |= (ra & 0xF);
      record_type &= 0xFF;
      switch (record_type) {
      case 0x00: {
        state = 14;
        break;
      }
      case 0x01: {
        for (ra = 0; ra < 20; ra++)
          hexstring(sum);
        segment = 0;
        sum = 0;
        data = 0;
        record_type = 0;
        address = 0;
        byte_count = 0;
        state = 0;
        break;
      }
      case 0x02: {
        state = 9;
        break;
      }
      default: {
        state = 0;
        break;
      }
      }
      break;
    }
    case 9:
    case 10:
    case 11:
    case 12: {
      segment <<= 4;
      if (ra > 0x39)
        ra -= 7;
      segment |= (ra & 0xF);
      segment &= 0xFFFF;
      state++;
      break;
    }
    case 13: {
      segment <<= 4;
      state = 0;
      break;
    }
    case 14:
    case 15:
    case 16:
    case 17:
    case 18:
    case 19:
    case 20:
    case 21: {
      data <<= 4;
      if (ra > 0x39)
        ra -= 7;
      data |= (ra & 0xF);
      if (state == 21) {
        ra = (data >> 24) | (data << 24);
        ra |= (data >> 8) & 0x0000FF00;
        ra |= (data << 8) & 0x00FF0000;
        data = ra;
        PUT32(address, data);
        sum += address;
        sum += data;
        address += 4;
        state = 14;
      } else {
        state++;
      }
      break;
    }
    }
  }
  return (0);
}
```