2679f63fe5
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>
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __SELFTESTS_POWERPC_PPC_ASM_H
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#define __SELFTESTS_POWERPC_PPC_ASM_H
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#include <ppc-asm.h>
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#define CONFIG_ALTIVEC
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#define r1 1
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#define R14 r14
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#define R15 r15
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#define R16 r16
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#define R17 r17
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#define R18 r18
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#define R19 r19
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#define R20 r20
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#define R21 r21
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#define R22 r22
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#define R29 r29
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#define R30 r30
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#define R31 r31
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#define STACKFRAMESIZE 256
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#define STK_REG(i) (112 + ((i)-14)*8)
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#define _GLOBAL(A) FUNC_START(test_ ## A)
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#define _GLOBAL_TOC(A) _GLOBAL(A)
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#define PPC_MTOCRF(A, B) mtocrf A, B
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#define EX_TABLE(x, y) \
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.section __ex_table,"a"; \
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.8byte x, y; \
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.previous
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#define BEGIN_FTR_SECTION .if test_feature
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#define FTR_SECTION_ELSE .else
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#define ALT_FTR_SECTION_END_IFCLR(x) .endif
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#define ALT_FTR_SECTION_END_IFSET(x) .endif
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#define ALT_FTR_SECTION_END(x, y) .endif
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#define END_FTR_SECTION_IFCLR(x) .endif
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#define END_FTR_SECTION_IFSET(x) .endif
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/* Default to taking the first of any alternative feature sections */
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test_feature = 1
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#endif /* __SELFTESTS_POWERPC_PPC_ASM_H */
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