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#ifndef NT_ARM_SYSTEM_CALL
# define NT_ARM_SYSTEM_CALL 0x404
#endif
static int
arch_set_scno(struct tcb *tcp, long scno)
{
unsigned int n = (uint16_t) scno;
const struct iovec io = {
.iov_base = &n,
.iov_len = sizeof(n)
};
int rc = ptrace(PTRACE_SETREGSET, tcp->pid, NT_ARM_SYSTEM_CALL, &io);
if (rc && errno != ESRCH)
perror_msg("arch_set_scno: NT_ARM_SYSTEM_CALL pid:%d scno:%#x",
tcp->pid, n);
return rc;
}
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