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2016-11-14powerpc: Add support for relative exception tablesNicholas Piggin1-4/+8
This halves the exception table size on 64-bit builds, and it allows build-time sorting of exception tables to work on relocated kernels. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Minor asm fixups and bits to keep the selftests working] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14powerpc: EX_TABLE macro for exception tablesNicholas Piggin4-0/+1
This macro is taken from s390, and allows more flexibility in changing exception table format. mpe: Put it in ppc_asm.h and only define one version using stringinfy_in_c(). Add some empty definitions and headers to keep the selftests happy. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Fail load_unaligned_zeropad on miscompareMichael Ellerman1-1/+3
If the result returned by load_unaligned_zeropad() doesn't match what we expect we should fail the test! Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-14selftests/powerpc: Abort load_unaligned_zeropad on unhandled SEGVMichael Ellerman1-4/+1
If the load unaligned zeropad test takes a SEGV which can't be handled, we increment segv_error, print the offending NIP and then return without taking any further action. In almost all cases this means we'll just take the SEGV again, and loop eternally spamming the console. Instead just abort(), it's a fatal error in the test. The test harness will notice that the child died and print a nice message for us. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-13selftests/powerpc: Fix build failure of load_unaligned_zeropad testMichael Ellerman1-0/+9
Commit 7a5692e6e533 ("arch/powerpc: provide zero_bytemask() for big-endian") added a call to __fls() in our word-at-a-time.h. That was fine for the kernel build but missed the fact that we also use word-at-a-time.h in a userspace test. Pulling in the kernel version of __fls() gets messy, so just define our own, it's unlikely to change often. Fixes: 7a5692e6e533 ("arch/powerpc: provide zero_bytemask() for big-endian") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-19selftests: Add install support for the powerpc testsMichael Ellerman1-10/+5
The bulk of the selftests are actually below the powerpc sub directory. This adds support for installing them, when on a powerpc machine, or if ARCH and CROSS_COMPILE are set appropriately. This is a little more complicated because of the sub directory structure under powerpc, but much of the common logic in lib.mk is still used. The net effect of the patch is still a reduction in code. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-23selftests/powerpc: Make git ignore all binaries in powerpc test suiteAnshuman Khandual1-0/+1
This patch includes all of the powerpc test binaries into the .gitignore file listing in their respective directories. This will make sure that git ignores all of these test binaries when displaying status. Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30selftests/powerpc: Add test of load_unaligned_zero_pad()Michael Ellerman5-0/+166
It is a rarely exercised case, so we want to have a test to ensure it works as required. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>