selftests/powerpc: Add checks for transactional sigreturn (34642d70) · Commits · 戴 / test

tools/testing/selftests/powerpc/tm/.gitignore

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		@@ -4,7 +4,7 @@ SIGNAL_CONTEXT_CHK_TESTS := tm-signal-context-chk-gpr tm-signal-context-chk-fpu

		TEST_GEN_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack \
		tm-vmxcopy tm-fork tm-tar tm-tmspr tm-vmx-unavail tm-unavailable tm-trap \
		$(SIGNAL_CONTEXT_CHK_TESTS) tm-sigreturn
		$(SIGNAL_CONTEXT_CHK_TESTS) tm-sigreturn tm-signal-sigreturn-nt

		top_srcdir = ../../../../..
		include ../../lib.mk

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		// SPDX-License-Identifier: GPL-2.0
		/*
		* Copyright 2018, Breno Leitao, Gustavo Romero, IBM Corp.
		*
		* A test case that creates a signal and starts a suspended transaction
		* inside the signal handler.
		*
		* It returns from the signal handler with the CPU at suspended state, but
		* without setting usercontext MSR Transaction State (TS) fields.
		*/

		#define _GNU_SOURCE
		#include <stdlib.h>
		#include <signal.h>

		#include "utils.h"

		void trap_signal_handler(int signo, siginfo_t si, void uc)
		{
		ucontext_t ucp = (ucontext_t ) uc;

		asm("tbegin.; tsuspend.;");

		/* Skip 'trap' instruction if it succeed */
		ucp->uc_mcontext.regs->nip += 4;
		}

		int tm_signal_sigreturn_nt(void)
		{
		struct sigaction trap_sa;

		trap_sa.sa_flags = SA_SIGINFO;
		trap_sa.sa_sigaction = trap_signal_handler;

		sigaction(SIGTRAP, &trap_sa, NULL);

		raise(SIGTRAP);

		return EXIT_SUCCESS;
		}

		int main(int argc, char **argv)
		{
		test_harness(tm_signal_sigreturn_nt, "tm_signal_sigreturn_nt");
		}