diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/.gitignore | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/Makefile | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c | 46 |
3 files changed, 48 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/tm/.gitignore b/tools/testing/selftests/powerpc/tm/.gitignore index c3ee8393dae8..208452a93e2c 100644 --- a/tools/testing/selftests/powerpc/tm/.gitignore +++ b/tools/testing/selftests/powerpc/tm/.gitignore @@ -11,6 +11,7 @@ tm-signal-context-chk-fpu tm-signal-context-chk-gpr tm-signal-context-chk-vmx tm-signal-context-chk-vsx +tm-signal-sigreturn-nt tm-vmx-unavail tm-unavailable tm-trap diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile index 9fc2cf6fbc92..75a685359129 100644 --- a/tools/testing/selftests/powerpc/tm/Makefile +++ b/tools/testing/selftests/powerpc/tm/Makefile @@ -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 diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c new file mode 100644 index 000000000000..56fbf9f6bbf3 --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c @@ -0,0 +1,46 @@ +// 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"); +} + |