user: 请从给定的汇编指令推导出C源代码：

```asm
<bp_tx_verify>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %rdx,-0x78(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpq   $0x3b,-0x70(%rbp)
  ja     L95
  mov    $0xffffffff,%eax
  jmp    L65
L95:
  mov    -0x68(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x4c(%rbp)
  movq   $0x4,-0x40(%rbp)
  mov    -0x70(%rbp),%rdx
  lea    -0x40(%rbp),%rcx
  mov    -0x68(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bp_readvarint@plt>
  mov    %rax,-0x38(%rbp)
  cmpq   $0x0,-0x38(%rbp)
  jne    L193
  mov    $0xffffffff,%eax
  jmp    L65
L193:
  movl   $0x0,-0x54(%rbp)
  jmp    L97
L47:
  mov    -0x40(%rbp),%rdx
  mov    -0x70(%rbp),%rax
  sub    %rdx,%rax
  cmp    $0x24,%rax
  ja     L5
  mov    $0xffffffff,%eax
  jmp    L65
L5:
  mov    -0x40(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x40(%rbp),%rax
  lea    0x20(%rax),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x48(%rbp)
  mov    -0x40(%rbp),%rax
  add    $0x24,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x70(%rbp),%rdx
  lea    -0x40(%rbp),%rcx
  mov    -0x68(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bp_readvarint@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x40(%rbp),%rcx
  mov    -0x70(%rbp),%rax
  sub    %rcx,%rax
  mov    %rax,%rdx
  mov    -0x10(%rbp),%rax
  add    $0x4,%rax
  cmp    %rax,%rdx
  jae    L152
  mov    $0xffffffff,%eax
  jmp    L65
L152:
  cmpq   $0x2710,-0x10(%rbp)
  jle    L27
  mov    $0xffffffff,%eax
  jmp    L65
L27:
  mov    -0x40(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x40(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x44(%rbp)
  mov    -0x40(%rbp),%rax
  add    $0x4,%rax
  mov    %rax,-0x40(%rbp)
  addl   $0x1,-0x54(%rbp)
L97:
  mov    -0x54(%rbp),%eax
  cltq
  cmp    %rax,-0x38(%rbp)
  jg     L47
  mov    -0x70(%rbp),%rdx
  lea    -0x40(%rbp),%rcx
  mov    -0x68(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bp_readvarint@plt>
  mov    %rax,-0x30(%rbp)
  cmpq   $0x0,-0x30(%rbp)
  jne    L39
  mov    $0xffffffff,%eax
  jmp    L65
L39:
  movl   $0x0,-0x50(%rbp)
  jmp    L15
L51:
  mov    -0x40(%rbp),%rdx
  mov    -0x70(%rbp),%rax
  sub    %rdx,%rax
  cmp    $0x8,%rax
  ja     L178
  mov    $0xffffffff,%eax
  jmp    L65
L178:
  mov    -0x40(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x28(%rbp)
  mov    -0x40(%rbp),%rax
  add    $0x8,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x70(%rbp),%rdx
  lea    -0x40(%rbp),%rcx
  mov    -0x68(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bp_readvarint@plt>
  mov    %rax,-0x20(%rbp)
  mov    -0x40(%rbp),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x40(%rbp)
  addl   $0x1,-0x50(%rbp)
L15:
  mov    -0x50(%rbp),%eax
  cltq
  cmp    %rax,-0x30(%rbp)
  jg     L51
  mov    -0x40(%rbp),%rax
  add    $0x4,%rax
  mov    %rax,-0x40(%rbp)
  cmpq   $0x0,-0x78(%rbp)
  jne    L86
  mov    -0x40(%rbp),%rax
  cmp    %rax,-0x70(%rbp)
  je     L87
  mov    $0xffffffff,%eax
  jmp    L65
L86:
  mov    -0x40(%rbp),%rdx
  mov    -0x78(%rbp),%rax
  mov    %rdx,(%rax)
L87:
  mov    $0x0,%eax
L65:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L208
  call   <__stack_chk_fail@plt>
L208:
  leave
  ret
```

assistant: ```c
int bp_tx_verify(char *tx, size_t tx_len, size_t *store_length) {
  if (tx_len < 60)
    return -1;
  int version = *(unsigned int *)tx;
  (void)(version);
  size_t position = 4;
  ev_uint64_t tx_in_c = bp_readvarint((unsigned char *)tx, &position, tx_len);
  if (tx_in_c == 0)
    return -1;
  for (int i = 0; i < tx_in_c; i++) {
    if (tx_len - position < 37)
      return -1;
    char *hash = tx + position;
    ev_uint32_t index = *(ev_uint32_t *)(tx + position + 32);
    position += 36;
    ev_uint64_t script_len = bp_readvarint((unsigned char *)tx, &position, tx_len);
    if (tx_len - position < script_len + 4)
      return -1;
    if (script_len > 10000)
      return -1;
    position += script_len;
    ev_uint32_t seq = *(ev_uint32_t *)(tx + position);
    position += 4;
    (void)(seq);
    (void)(index);
    (void)(hash);
  }
  ev_uint64_t tx_out_c = bp_readvarint((unsigned char *)tx, &position, tx_len);
  if (tx_out_c == 0)
    return -1;
  for (int i = 0; i < tx_out_c; i++) {
    if (tx_len - position < 9)
      return -1;
    ev_uint64_t value = *(ev_uint64_t *)(tx + position);
    position += 8;
    ev_uint64_t script_len = bp_readvarint((unsigned char *)tx, &position, tx_len);
    position += script_len;
    (void)(value);
  }
  position += 4;
  if (!store_length) {
    if (tx_len - position != 0)
      return -1;
  } else {
    *store_length = position;
  }
  return 0;
}
```