64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
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/*
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* Test execution of DC CVAP instruction.
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*
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* Copyright (c) 2023 Zhuojia Shen <chaosdefinition@hotmail.com>
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <asm/hwcap.h>
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#include <sys/auxv.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef HWCAP_DCPOP
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#define HWCAP_DCPOP (1 << 16)
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#endif
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bool should_fail = false;
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static void signal_handler(int sig, siginfo_t *si, void *data)
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{
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ucontext_t *uc = (ucontext_t *)data;
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if (should_fail) {
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uc->uc_mcontext.pc += 4;
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} else {
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exit(EXIT_FAILURE);
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}
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}
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static int do_dc_cvap(void)
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{
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struct sigaction sa = {
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.sa_flags = SA_SIGINFO,
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.sa_sigaction = signal_handler,
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};
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sigemptyset(&sa.sa_mask);
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if (sigaction(SIGSEGV, &sa, NULL) < 0) {
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perror("sigaction");
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return EXIT_FAILURE;
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}
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asm volatile("dc cvap, %0\n\t" :: "r"(&sa));
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should_fail = true;
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asm volatile("dc cvap, %0\n\t" :: "r"(NULL));
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should_fail = false;
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return EXIT_SUCCESS;
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}
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int main(void)
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{
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if (getauxval(AT_HWCAP) & HWCAP_DCPOP) {
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return do_dc_cvap();
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} else {
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printf("SKIP: no HWCAP_DCPOP on this system\n");
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return EXIT_SUCCESS;
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}
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}
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