1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright 2018, Breno Leitao, Gustavo Romero, IBM Corp.
5 * A test case that creates a signal and starts a suspended transaction
6 * inside the signal handler.
8 * It returns from the signal handler with the CPU at suspended state, but
9 * without setting usercontext MSR Transaction State (TS) fields.
18 void trap_signal_handler(int signo, siginfo_t *si, void *uc)
20 ucontext_t *ucp = (ucontext_t *) uc;
22 asm("tbegin.; tsuspend.;");
24 /* Skip 'trap' instruction if it succeed */
25 ucp->uc_mcontext.regs->nip += 4;
28 int tm_signal_sigreturn_nt(void)
30 struct sigaction trap_sa;
32 trap_sa.sa_flags = SA_SIGINFO;
33 trap_sa.sa_sigaction = trap_signal_handler;
35 sigaction(SIGTRAP, &trap_sa, NULL);
42 int main(int argc, char **argv)
44 test_harness(tm_signal_sigreturn_nt, "tm_signal_sigreturn_nt");