// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2016, Cyril Bur, IBM Corp. * * Sending one self a signal should always get delivered. */ #include <errno.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <signal.h> #include <unistd.h> #include <altivec.h> #include "utils.h" #include "../tm/tm.h" #define MAX_ATTEMPT 500000 #define TIMEOUT 10 extern long tm_signal_self(pid_t pid, int sig, long *ret); static sig_atomic_t signaled; static sig_atomic_t fail; static void signal_handler(int sig) { if (tcheck_active()) { fail = 2; return; } if (sig == SIGUSR1) signaled = 1; else fail = 1; } static int test_signal_tm() { int i; struct sigaction act; act.sa_handler = signal_handler; act.sa_flags = 0; sigemptyset(&act.sa_mask); if (sigaction(SIGUSR1, &act, NULL) < 0) { perror("sigaction SIGUSR1"); exit(1); } if (sigaction(SIGALRM, &act, NULL) < 0) { perror("sigaction SIGALRM"); exit(1); } SKIP_IF(!have_htm()); for (i = 0; i < MAX_ATTEMPT; i++) { /* * If anything bad happens in ASM and we fail to set ret * because *handwave* TM this will cause failure */ long ret = 0xdead; long rc = 0xbeef; alarm(0); /* Disable any pending */ signaled = 0; alarm(TIMEOUT); FAIL_IF(tcheck_transactional()); rc = tm_signal_self(getpid(), SIGUSR1, &ret); if (ret == 0xdead) /* * This basically means the transaction aborted before we * even got to the suspend... this is crazy but it * happens. * Yes this also means we might never make forward * progress... the alarm() will trip eventually... */ continue; if (rc || ret) { /* Ret is actually an errno */ printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n", __builtin_get_texasr(), __builtin_get_tfiar()); fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n", i, fail, rc, ret); FAIL_IF(ret); } while(!signaled && !fail) asm volatile("": : :"memory"); if (!signaled) { fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n", i, fail, rc, ret); FAIL_IF(fail); /* For the line number */ } } return 0; } int main(void) { return test_harness(test_signal_tm, "signal_tm"); }