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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-08-03 20:13:05 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-08-08 00:32:35 +1000 |
| commit | 2679f63fe5e4bb1459a0c20859a99c70c15d5ea1 (patch) | |
| tree | 19a843ace4fd633800529e9f44e77d583f7fd464 /tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h | |
| parent | 98c45f51f767bfdd71d773cceaceb403352e51ae (diff) | |
| download | blackbird-op-linux-2679f63fe5e4bb1459a0c20859a99c70c15d5ea1.tar.gz blackbird-op-linux-2679f63fe5e4bb1459a0c20859a99c70c15d5ea1.zip | |
selftests/powerpc/64: Test exception cases in copy_tofrom_user
This adds a set of test cases to test the behaviour of
copy_tofrom_user when exceptions are encountered accessing the
source or destination. Currently, copy_tofrom_user does not always
copy as many bytes as possible when an exception occurs on a store
to the destination, and that is reflected in failures in these tests.
Based on a test program from Anton Blanchard.
[paulus@ozlabs.org - test all three paths, wrote commit description,
made EX_TABLE create an exception table.]
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h')
| -rw-r--r-- | tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h | 27 |
1 files changed, 8 insertions, 19 deletions
diff --git a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h index 91bc40392eb3..0605df807593 100644 --- a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h +++ b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h @@ -1,4 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __SELFTESTS_POWERPC_PPC_ASM_H +#define __SELFTESTS_POWERPC_PPC_ASM_H #include <ppc-asm.h> #define CONFIG_ALTIVEC @@ -26,25 +28,10 @@ #define PPC_MTOCRF(A, B) mtocrf A, B -#define EX_TABLE(x, y) - -FUNC_START(enter_vmx_usercopy) - li r3,1 - blr - -FUNC_START(exit_vmx_usercopy) - li r3,0 - blr - -FUNC_START(enter_vmx_ops) - li r3,1 - blr - -FUNC_START(exit_vmx_ops) - blr - -FUNC_START(__copy_tofrom_user_base) - blr +#define EX_TABLE(x, y) \ + .section __ex_table,"a"; \ + .8byte x, y; \ + .previous #define BEGIN_FTR_SECTION .if test_feature #define FTR_SECTION_ELSE .else @@ -56,3 +43,5 @@ FUNC_START(__copy_tofrom_user_base) /* Default to taking the first of any alternative feature sections */ test_feature = 1 + +#endif /* __SELFTESTS_POWERPC_PPC_ASM_H */ |
