user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x60,%rsp
  mov    %edi,-0x54(%rbp)
  mov    %rsi,-0x60(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpl   $0x4,-0x54(%rbp)
  je     L195
  mov    $0x0,%edi
  call   <usage@plt>
L195:
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    -0x48(%rbp),%rdx
  lea    D66(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L4
  mov    -0x48(%rbp),%eax
  test   %eax,%eax
  jg     L207
L4:
  lea    D68(%rip),%rax
  mov    %rax,%rdi
  call   <usage@plt>
L207:
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  lea    -0x40(%rbp),%rdx
  lea    D66(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L3
  mov    -0x40(%rbp),%eax
  test   %eax,%eax
  jg     L114
L3:
  lea    D22(%rip),%rax
  mov    %rax,%rdi
  call   <usage@plt>
L114:
  mov    -0x60(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  lea    -0x44(%rbp),%rdx
  lea    D66(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L118
  mov    -0x44(%rbp),%eax
  cmp    $0x8,%eax
  je     L130
  mov    -0x44(%rbp),%eax
  cmp    $0x10,%eax
  je     L130
  mov    -0x44(%rbp),%eax
  cmp    $0x20,%eax
  je     L130
L118:
  lea    D38(%rip),%rax
  mov    %rax,%rdi
  call   <usage@plt>
L130:
  mov    -0x44(%rbp),%eax
  cmp    $0x10,%eax
  jg     L8
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%eax
  add    %eax,%edx
  mov    -0x44(%rbp),%eax
  mov    $0x1,%esi
  mov    %eax,%ecx
  shl    %cl,%esi
  mov    %esi,%eax
  cmp    %eax,%edx
  jle    L8
  lea    D93(%rip),%rax
  mov    %rax,%rdi
  call   <usage@plt>
L8:
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%ecx
  mov    -0x48(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <reed_sol_vandermonde_coding_matrix@plt>
  mov    %rax,-0x30(%rbp)
  lea    D59(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x44(%rbp),%ecx
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <jerasure_print_matrix@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    $0x0,%edi
  call   <srand48@plt>
  mov    -0x48(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x28(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L162
L44:
  mov    $0x8,%edi
  call   <malloc@plt>
  mov    -0x3c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    %rax,(%rdx)
  mov    $0x0,%eax
  call   <lrand48@plt>
  cltq
  mov    %rax,-0x38(%rbp)
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  lea    -0x38(%rbp),%rcx
  mov    $0x8,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  addl   $0x1,-0x3c(%rbp)
L162:
  mov    -0x48(%rbp),%eax
  cmp    %eax,-0x3c(%rbp)
  jl     L44
  mov    -0x40(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x20(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L67
L38:
  mov    $0x8,%edi
  call   <malloc@plt>
  mov    -0x3c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x20(%rbp),%rdx
  add    %rcx,%rdx
  mov    %rax,(%rdx)
  addl   $0x1,-0x3c(%rbp)
L67:
  mov    -0x40(%rbp),%eax
  cmp    %eax,-0x3c(%rbp)
  jl     L38
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x48(%rbp),%eax
  mov    -0x20(%rbp),%r8
  mov    -0x28(%rbp),%rdi
  mov    -0x30(%rbp),%rcx
  sub    $0x8,%rsp
  push   $0x8
  mov    %r8,%r9
  mov    %rdi,%r8
  mov    %eax,%edi
  call   <jerasure_matrix_encode@plt>
  add    $0x10,%rsp
  lea    D26(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x48(%rbp),%eax
  mov    -0x20(%rbp),%rdi
  mov    -0x28(%rbp),%rcx
  mov    %rdi,%r9
  mov    %rcx,%r8
  mov    $0x8,%ecx
  mov    %eax,%edi
  call   <print_data_and_coding@plt>
  mov    -0x40(%rbp),%eax
  add    $0x1,%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L153
L152:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movl   $0x0,(%rax)
  addl   $0x1,-0x3c(%rbp)
L153:
  mov    -0x40(%rbp),%edx
  mov    -0x48(%rbp),%eax
  add    %edx,%eax
  cmp    %eax,-0x3c(%rbp)
  jl     L152
  movq   $0x0,-0x38(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L51
L99:
  mov    $0x0,%eax
  call   <lrand48@plt>
  mov    -0x48(%rbp),%ecx
  mov    -0x40(%rbp),%edx
  lea    (%rcx,%rdx,1),%esi
  mov    -0x3c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rdx,%rcx
  cltd
  idiv   %esi
  mov    %edx,%eax
  mov    %eax,(%rcx)
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jne    L51
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movl   $0x1,(%rax)
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x48(%rbp),%eax
  cmp    %eax,%edx
  jge    L34
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  jmp    L89
L34:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    -0x48(%rbp),%edx
  sub    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
L89:
  lea    -0x38(%rbp),%rcx
  mov    $0x8,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  addl   $0x1,-0x3c(%rbp)
L51:
  mov    -0x40(%rbp),%eax
  cmp    %eax,-0x3c(%rbp)
  jl     L99
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movl   $0xffffffff,(%rax)
  mov    -0x40(%rbp),%eax
  mov    %eax,%esi
  lea    D29(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x48(%rbp),%eax
  mov    -0x20(%rbp),%rdi
  mov    -0x28(%rbp),%rcx
  mov    %rdi,%r9
  mov    %rcx,%r8
  mov    $0x8,%ecx
  mov    %eax,%edi
  call   <print_data_and_coding@plt>
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x48(%rbp),%eax
  mov    -0x18(%rbp),%rdi
  mov    -0x30(%rbp),%rcx
  sub    $0x8,%rsp
  push   $0x8
  push   -0x20(%rbp)
  push   -0x28(%rbp)
  mov    %rdi,%r9
  mov    $0x1,%r8d
  mov    %eax,%edi
  call   <jerasure_matrix_decode@plt>
  add    $0x20,%rsp
  mov    %eax,-0x3c(%rbp)
  lea    D80(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x44(%rbp),%edx
  mov    -0x40(%rbp),%esi
  mov    -0x48(%rbp),%eax
  mov    -0x20(%rbp),%rdi
  mov    -0x28(%rbp),%rcx
  mov    %rdi,%r9
  mov    %rcx,%r8
  mov    $0x8,%ecx
  mov    %eax,%edi
  call   <print_data_and_coding@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L101
  call   <__stack_chk_fail@plt>
L101:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D66
type_infered: string
name: read_data
arguments: data_label: D68
type_infered: string
name: read_data
arguments: data_label: D22
type_infered: string
name: read_data
arguments: data_label: D38
type_infered: string
name: read_data
arguments: data_label: D93
type_infered: string
name: read_data
arguments: data_label: D59
type_infered: string
name: read_data
arguments: data_label: D26
type_infered: string
name: read_data
arguments: data_label: D29
type_infered: string
name: read_data
arguments: data_label: D80
type_infered: string

tool: D66: %d

tool: D68: Bad k

tool: D22: Bad m

tool: D38: Bad w

tool: D93: k + m is too big

tool: D59: Last m rows of the Distribution Matrix:


tool: D26: Encoding Complete:


tool: D29: Erased %d random devices:



tool: D80: State of the system after decoding:


assistant: ```c
int main(int argc, char **argv) {
  long l;
  int k, w, i, j, m;
  int *matrix;
  char **data, **coding;
  int *erasures, *erased;
  int *decoding_matrix, *dm_ids;
  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 != 8 && w != 16 && w != 32))
    usage("Bad w");
  if (w <= 16 && k + m > (1 << w))
    usage("k + m is too big");
  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
  printf("Last m rows of the Distribution Matrix:\n\n");
  jerasure_print_matrix(matrix, m, k, w);
  printf("\n");
  srand48(0);
  data = (char **)malloc(sizeof(char *) * (k));
  for (i = 0; i < k; i++) {
    data[i] = (char *)malloc(sizeof(char) * (sizeof(long)));
    l = lrand48();
    memcpy(data[i], &l, sizeof(long));
  }
  coding = (char **)malloc(sizeof(char *) * (m));
  for (i = 0; i < m; i++) {
    coding[i] = (char *)malloc(sizeof(char) * (sizeof(long)));
  }
  jerasure_matrix_encode(k, m, w, matrix, data, coding, sizeof(long));
  printf("Encoding Complete:\n\n");
  print_data_and_coding(k, m, w, sizeof(long), data, coding);
  erasures = (int *)malloc(sizeof(int) * ((m + 1)));
  erased = (int *)malloc(sizeof(int) * ((k + m)));
  for (i = 0; i < m + k; i++)
    erased[i] = 0;
  l = 0;
  for (i = 0; i < m;) {
    erasures[i] = lrand48() % (k + m);
    if (erased[erasures[i]] == 0) {
      erased[erasures[i]] = 1;
      memcpy((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i] - k], &l, sizeof(long));
      i++;
    }
  }
  erasures[i] = -1;
  printf("Erased %d random devices:\n\n", m);
  print_data_and_coding(k, m, w, sizeof(long), data, coding);
  i = jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, sizeof(long));
  printf("State of the system after decoding:\n\n");
  print_data_and_coding(k, m, w, sizeof(long), data, coding);
  return 0;
}
```