user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<update_program>:
  endbr64
  push   %r14
  lea    D126(%rip),%rdi
  xor    %r14d,%r14d
  push   %r13
  xor    %r13d,%r13d
  push   %r12
  push   %rbp
  xor    %ebp,%ebp
  push   %rbx
  xor    %ebx,%ebx
  call   <uart_puts@plt>
  xor    %eax,%eax
  call   <uart_get_file_size@plt>
  lea    D23(%rip),%rdi
  mov    %eax,%r12d
  call   <uart_printf@plt>
  mov    %r12d,%edi
  call   <uart_print_int@plt>
  lea    D1(%rip),%rdi
  call   <uart_puts@plt>
  nopl   0x0(%rax)
L69:
  lea    0x5fc00000(%rbx),%rdi
  call   <uart_get_file@plt>
  test   %rax,%rax
  je     L10
  add    $0x1,%ebp
  cmp    %ebp,%r12d
  je     L63
  mov    $0x1,%r14d
  xor    %r13d,%r13d
  movslq %ebp,%rbx
  jmp    L69
  nopw   0x0(%rax,%rax,1)
L10:
  test   %r14d,%r14d
  je     L93
  add    $0x1,%r13d
  cmp    $0xffffff,%r13d
  je     L63
L93:
  cmp    %r12d,%ebp
  jne    L69
L63:
  test   %ebp,%ebp
  je     L30
  lea    D82(%rip),%rdi
  call   <uart_printf@plt>
  mov    %ebp,%edi
  call   <uart_print_int@plt>
  lea    D106(%rip),%rdi
  call   <uart_printf@plt>
  lea    D139(%rip),%rdi
  call   <uart_printf@plt>
  mov    $0x5fc0000f,%esi
  mov    $0x5fc00000,%edi
  call   <sdram_read@plt>
  lea    D128(%rip),%rdi
  call   <uart_printf@plt>
  lea    0x5fbfffff(%rbp),%esi
  lea    0x5fbffff0(%rbp),%edi
  call   <sdram_read@plt>
  lea    D118(%rip),%rdi
  call   <uart_puts@plt>
  lea    D28(%rip),%rdi
  call   <uart_printf@plt>
  xor    %eax,%eax
  call   <uart_getc@plt>
  lea    D95(%rip),%rdi
  mov    %eax,%ebx
  call   <uart_puts@plt>
  and    $0xffffffdf,%ebx
  cmp    $0x59,%bl
  jne    L54
  lea    D107(%rip),%rdi
  call   <uart_puts@plt>
  xor    %edi,%edi
  call   <nand_erase_block@plt>
  mov    %ebp,%esi
  mov    $0x5fc00000,%edi
  call   <write_to_boot@plt>
  lea    D70(%rip),%rdi
  call   <uart_puts@plt>
  xor    %eax,%eax
L43:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L30:
  lea    D78(%rip),%rdi
  call   <uart_puts@plt>
  mov    $0xffffffff,%eax
  jmp    L43
L54:
  lea    D90(%rip),%rdi
  call   <uart_puts@plt>
  mov    $0xffffffff,%eax
  jmp    L43
```

tool_calls: name: unpack_data
arguments: label: D126
data_type: string
name: unpack_data
arguments: label: D23
data_type: string
name: unpack_data
arguments: label: D1
data_type: string
name: unpack_data
arguments: label: D82
data_type: string
name: unpack_data
arguments: label: D106
data_type: string
name: unpack_data
arguments: label: D139
data_type: string
name: unpack_data
arguments: label: D128
data_type: string
name: unpack_data
arguments: label: D118
data_type: string
name: unpack_data
arguments: label: D28
data_type: string
name: unpack_data
arguments: label: D95
data_type: string
name: unpack_data
arguments: label: D107
data_type: string
name: unpack_data
arguments: label: D70
data_type: string
name: unpack_data
arguments: label: D78
data_type: string
name: unpack_data
arguments: label: D90
data_type: string

tool: D126: Please send binary file!

tool: D23: file size = 

tool: D1: 
Receiving binary file ...

tool: D82: 
Received 

tool: D106:  bytes data.


tool: D139: 
The first 16 byte are:

tool: D128: 
The last 16 bytes are:

tool: D118: 
Do you sure update this program? (Y/n)

tool: D28:  >> 

tool: 

tool: D107: Updating ...

tool: D70: Update done!

tool: D78: No file receive.

tool: D90: You have cancel update.

assistant: ```c
int update_program(void) {
  unsigned int addr = 0x5FC00000;
  unsigned char *buffer = (unsigned char *)addr;
  unsigned int wait_time = 0;
  int start = 0;
  int length = 0;
  int size = 0;
  uart_puts("Please send binary file!");
  size = uart_get_file_size();
  uart_printf("file size = ");
  uart_print_int(size);
  uart_puts("\nReceiving binary file ...");
  while (1) {
    if (uart_get_file(&buffer[length])) {
      start = 1;
      wait_time = 0;
      ++length;
    } else {
      if (start)
        ++wait_time;
    }
    if (length == size)
      break;
    if (wait_time == 0x00FFFFFF)
      break;
  }
  if (length == 0) {
    uart_puts("No file receive.");
    return -1;
  }
  uart_printf("\nReceived ");
  uart_print_int(length);
  uart_printf(" bytes data.\n");
  uart_printf("\nThe first 16 byte are:");
  sdram_read(addr, addr + 0xF);
  uart_printf("\nThe last 16 bytes are:");
  sdram_read(addr + length - 1 - 0xF, addr + length - 1);
  uart_puts("\nDo you sure update this program? (Y/n)");
  uart_printf(" >> ");
  char ch = uart_getc();
  uart_puts("");
  if (ch != 'Y' && ch != 'y') {
    uart_puts("You have cancel update.");
    return -1;
  }
  uart_puts("Updating ...");
  nand_erase_block(0);
  write_to_boot(addr, length);
  uart_puts("Update done!");
  return 0;
}
```