user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  cmp    $0x4,%edi
  je     L125
  xor    %edi,%edi
  call   <usage@plt>
L125:
  lea    D19(%rip),%rbp
  mov    0x8(%rbx),%rdi
  lea    0xc(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L68
  mov    0xc(%rsp),%edx
  test   %edx,%edx
  jle    L68
L80:
  mov    0x10(%rbx),%rdi
  lea    0x14(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L4
  mov    0x14(%rsp),%eax
  test   %eax,%eax
  jle    L4
L122:
  mov    0x18(%rbx),%rdi
  lea    0x10(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L31
  mov    0x10(%rsp),%edx
  lea    -0x1(%rdx),%eax
  cmp    $0x1f,%eax
  jbe    L127
L31:
  lea    D66(%rip),%rdi
  call   <usage@plt>
  mov    0x10(%rsp),%edx
L127:
  cmp    $0x1e,%edx
  jg     L60
  mov    0xc(%rsp),%esi
  mov    0x14(%rsp),%edi
  mov    %edx,%ecx
  mov    $0x1,%eax
  shl    %cl,%eax
  lea    (%rsi,%rdi,1),%ecx
  cmp    %ecx,%eax
  jl     L64
L107:
  add    %esi,%edi
  call   <reed_sol_extended_vandermonde_matrix@plt>
  lea    D12(%rip),%rdi
  mov    %rax,%rbp
  call   <printf@plt>
  mov    0xc(%rsp),%edx
  mov    0x14(%rsp),%esi
  mov    %rbp,%rdi
  mov    0x10(%rsp),%ecx
  lea    D36(%rip),%rbp
  add    %edx,%esi
  call   <jerasure_print_matrix@plt>
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    0xc(%rsp),%esi
  mov    0x14(%rsp),%edi
  mov    0x10(%rsp),%edx
  add    %esi,%edi
  call   <reed_sol_big_vandermonde_distribution_matrix@plt>
  lea    D16(%rip),%rdi
  mov    %rax,%r12
  call   <printf@plt>
  mov    0xc(%rsp),%edx
  mov    0x14(%rsp),%esi
  mov    %r12,%rdi
  mov    0x10(%rsp),%ecx
  add    %edx,%esi
  call   <jerasure_print_matrix@plt>
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    0x10(%rsp),%edx
  mov    0x14(%rsp),%esi
  mov    0xc(%rsp),%edi
  call   <reed_sol_vandermonde_coding_matrix@plt>
  lea    D10(%rip),%rdi
  mov    %rax,%r12
  call   <printf@plt>
  mov    0x10(%rsp),%ecx
  mov    0xc(%rsp),%edx
  mov    %r12,%rdi
  mov    0x14(%rsp),%esi
  call   <jerasure_print_matrix@plt>
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L37
  add    $0x20,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L4:
  lea    D50(%rip),%rdi
  call   <usage@plt>
  jmp    L122
L68:
  lea    D29(%rip),%rdi
  call   <usage@plt>
  jmp    L80
L64:
  lea    D76(%rip),%rdi
  call   <usage@plt>
  mov    0x10(%rsp),%edx
L60:
  mov    0xc(%rsp),%esi
  mov    0x14(%rsp),%edi
  jmp    L107
L37:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D19
datatype: string
name: disassemble_data
arguments: label: D66
datatype: string
name: disassemble_data
arguments: label: D12
datatype: string
name: disassemble_data
arguments: label: D36
datatype: string
name: disassemble_data
arguments: label: D16
datatype: string
name: disassemble_data
arguments: label: D10
datatype: string
name: disassemble_data
arguments: label: D50
datatype: string
name: disassemble_data
arguments: label: D29
datatype: string
name: disassemble_data
arguments: label: D76
datatype: string

tool: D19: %d

tool: D66: Bad w

tool: D12: Extended Vandermonde Matrix:



tool: D36: 


tool: D16: Vandermonde Distribution Matrix:



tool: D10: Vandermonde Coding Matrix:



tool: D50: Bad m

tool: D29: Bad k

tool: D76: k + m is too big

assistant: ```c
int main(int argc, char **argv) {
  int k, w, m;
  int *matrix;
  if (argc != 4)
    usage(NULL);
  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0)
    usage("Bad k");
  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0)
    usage("Bad m");
  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32)
    usage("Bad w");
  if (w <= 30 && k + m > (1 << w))
    usage("k + m is too big");
  matrix = reed_sol_extended_vandermonde_matrix(k + m, k, w);
  printf("Extended Vandermonde Matrix:\n\n");
  jerasure_print_matrix(matrix, k + m, k, w);
  printf("\n");
  matrix = reed_sol_big_vandermonde_distribution_matrix(k + m, k, w);
  printf("Vandermonde Distribution Matrix:\n\n");
  jerasure_print_matrix(matrix, k + m, k, w);
  printf("\n");
  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
  printf("Vandermonde Coding Matrix:\n\n");
  jerasure_print_matrix(matrix, m, k, w);
  printf("\n");
  return 0;
}
```