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author | Chris Smart <chris@distroguy.com> | 2016-06-17 09:34:47 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-07-05 23:49:51 +1000 |
commit | 4375088072295b09cc5d9bf7a8cd2333b608492a (patch) | |
tree | ee4d78c9d440e0505c347212d5eb945302558d1b /tools/testing/selftests/powerpc/alignment/paste_unaligned.c | |
parent | ae26b36f8098c793a754549662771099215904ed (diff) | |
download | op-kernel-dev-4375088072295b09cc5d9bf7a8cd2333b608492a.zip op-kernel-dev-4375088072295b09cc5d9bf7a8cd2333b608492a.tar.gz |
selftests/powerpc: Test unaligned copy and paste
Test that an ISA 3.0 compliant machine performing an unaligned copy,
copy_first, paste or paste_last is sent a SIGBUS.
Signed-off-by: Chris Smart <chris@distroguy.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/testing/selftests/powerpc/alignment/paste_unaligned.c')
-rw-r--r-- | tools/testing/selftests/powerpc/alignment/paste_unaligned.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/alignment/paste_unaligned.c b/tools/testing/selftests/powerpc/alignment/paste_unaligned.c new file mode 100644 index 0000000..6f982b4 --- /dev/null +++ b/tools/testing/selftests/powerpc/alignment/paste_unaligned.c @@ -0,0 +1,43 @@ +/* + * Copyright 2016, Chris Smart, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Calls to paste which are not 128-byte aligned should be caught + * and sent a SIGBUS. + * + */ + +#include <string.h> +#include <unistd.h> +#include "utils.h" +#include "instructions.h" +#include "copy_paste_unaligned_common.h" + +unsigned int expected_instruction = PPC_INST_PASTE; +unsigned int instruction_mask = 0xfc0007fe; + +int test_paste_unaligned(void) +{ + /* Only run this test on a P9 or later */ + SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00)); + + /* Register our signal handler with SIGBUS */ + setup_signal_handler(); + + copy(cacheline_buf); + + /* +1 makes buf unaligned */ + paste(cacheline_buf+1); + + /* We should not get here */ + return 1; +} + +int main(int argc, char *argv[]) +{ + return test_harness(test_paste_unaligned, "test_paste_unaligned"); +} |