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 mcsafe_inject_src(void * addr)10static 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 mcsafe_inject_dst(void * addr)18static 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 */ mcsafe_inject_src(void * addr)26static inline void mcsafe_inject_src(void *addr) 27 { 28 } 29 mcsafe_inject_dst(void * addr)30static 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_ */ 76
