| Dan Williams | 5d8beee | 2018-05-01 06:49:45 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _MCSAFE_TEST_H_ |
| 3 | #define _MCSAFE_TEST_H_ |
| 4 | |
| 5 | #ifndef __ASSEMBLY__ |
| 6 | #ifdef CONFIG_MCSAFE_TEST |
| 7 | extern unsigned long mcsafe_test_src; |
| 8 | extern unsigned long mcsafe_test_dst; |
| 9 | |
| 10 | static inline void mcsafe_inject_src(void *addr) |
| 11 | { |
| 12 | if (addr) |
| 13 | mcsafe_test_src = (unsigned long) addr; |
| 14 | else |
| 15 | mcsafe_test_src = ~0UL; |
| 16 | } |
| 17 | |
| 18 | static inline void mcsafe_inject_dst(void *addr) |
| 19 | { |
| 20 | if (addr) |
| 21 | mcsafe_test_dst = (unsigned long) addr; |
| 22 | else |
| 23 | mcsafe_test_dst = ~0UL; |
| 24 | } |
| 25 | #else /* CONFIG_MCSAFE_TEST */ |
| 26 | static inline void mcsafe_inject_src(void *addr) |
| 27 | { |
| 28 | } |
| 29 | |
| 30 | static inline void mcsafe_inject_dst(void *addr) |
| 31 | { |
| 32 | } |
| 33 | #endif /* CONFIG_MCSAFE_TEST */ |
| 34 | |
| 35 | #else /* __ASSEMBLY__ */ |
| 36 | #include <asm/export.h> |
| 37 | |
| 38 | #ifdef CONFIG_MCSAFE_TEST |
| 39 | .macro MCSAFE_TEST_CTL |
| 40 | .pushsection .data |
| 41 | .align 8 |
| 42 | .globl mcsafe_test_src |
| 43 | mcsafe_test_src: |
| 44 | .quad 0 |
| 45 | EXPORT_SYMBOL_GPL(mcsafe_test_src) |
| 46 | .globl mcsafe_test_dst |
| 47 | mcsafe_test_dst: |
| 48 | .quad 0 |
| 49 | EXPORT_SYMBOL_GPL(mcsafe_test_dst) |
| 50 | .popsection |
| 51 | .endm |
| 52 | |
| 53 | .macro MCSAFE_TEST_SRC reg count target |
| 54 | leaq \count(\reg), %r9 |
| 55 | cmp mcsafe_test_src, %r9 |
| 56 | ja \target |
| 57 | .endm |
| 58 | |
| 59 | .macro MCSAFE_TEST_DST reg count target |
| 60 | leaq \count(\reg), %r9 |
| 61 | cmp mcsafe_test_dst, %r9 |
| 62 | ja \target |
| 63 | .endm |
| 64 | #else |
| 65 | .macro MCSAFE_TEST_CTL |
| 66 | .endm |
| 67 | |
| 68 | .macro MCSAFE_TEST_SRC reg count target |
| 69 | .endm |
| 70 | |
| 71 | .macro MCSAFE_TEST_DST reg count target |
| 72 | .endm |
| 73 | #endif /* CONFIG_MCSAFE_TEST */ |
| 74 | #endif /* __ASSEMBLY__ */ |
| 75 | #endif /* _MCSAFE_TEST_H_ */ |