granicus.if.org Git - strace/blob - linux/aarch64/set_scno.c

   1 #ifndef NT_ARM_SYSTEM_CALL
   2 # define NT_ARM_SYSTEM_CALL 0x404
   3 #endif
   4 /*
   5  * NT_ARM_SYSTEM_CALL regset is supported by linux kernel
   6  * starting with commit v3.19-rc1~59^2~16.
   7  */
   8
   9 static int
  10 arch_set_scno(struct tcb *tcp, long scno)
  11 {
  12         unsigned int n = (uint16_t) scno;
  13         const struct iovec io = {
  14                 .iov_base = &n,
  15                 .iov_len = sizeof(n)
  16         };
  17         int rc = ptrace(PTRACE_SETREGSET, tcp->pid, NT_ARM_SYSTEM_CALL, &io);
  18         if (rc && errno != ESRCH)
  19                 perror_msg("arch_set_scno: NT_ARM_SYSTEM_CALL pid:%d scno:%#x",
  20                            tcp->pid, n);
  21         return rc;
  22 }