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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/x86/include/asm/mcsafe_test.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm/mcsafe_test.h')
| -rw-r--r-- | arch/x86/include/asm/mcsafe_test.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mcsafe_test.h b/arch/x86/include/asm/mcsafe_test.h new file mode 100644 index 000000000..eb59804b6 --- /dev/null +++ b/arch/x86/include/asm/mcsafe_test.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _MCSAFE_TEST_H_ +#define _MCSAFE_TEST_H_ + +#ifndef __ASSEMBLY__ +#ifdef CONFIG_MCSAFE_TEST +extern unsigned long mcsafe_test_src; +extern unsigned long mcsafe_test_dst; + +static inline void mcsafe_inject_src(void *addr) +{ + if (addr) + mcsafe_test_src = (unsigned long) addr; + else + mcsafe_test_src = ~0UL; +} + +static inline void mcsafe_inject_dst(void *addr) +{ + if (addr) + mcsafe_test_dst = (unsigned long) addr; + else + mcsafe_test_dst = ~0UL; +} +#else /* CONFIG_MCSAFE_TEST */ +static inline void mcsafe_inject_src(void *addr) +{ +} + +static inline void mcsafe_inject_dst(void *addr) +{ +} +#endif /* CONFIG_MCSAFE_TEST */ + +#else /* __ASSEMBLY__ */ +#include <asm/export.h> + +#ifdef CONFIG_MCSAFE_TEST +.macro MCSAFE_TEST_CTL + .pushsection .data + .align 8 + .globl mcsafe_test_src + mcsafe_test_src: + .quad 0 + EXPORT_SYMBOL_GPL(mcsafe_test_src) + .globl mcsafe_test_dst + mcsafe_test_dst: + .quad 0 + EXPORT_SYMBOL_GPL(mcsafe_test_dst) + .popsection +.endm + +.macro MCSAFE_TEST_SRC reg count target + leaq \count(\reg), %r9 + cmp mcsafe_test_src, %r9 + ja \target +.endm + +.macro MCSAFE_TEST_DST reg count target + leaq \count(\reg), %r9 + cmp mcsafe_test_dst, %r9 + ja \target +.endm +#else +.macro MCSAFE_TEST_CTL +.endm + +.macro MCSAFE_TEST_SRC reg count target +.endm + +.macro MCSAFE_TEST_DST reg count target +.endm +#endif /* CONFIG_MCSAFE_TEST */ +#endif /* __ASSEMBLY__ */ +#endif /* _MCSAFE_TEST_H_ */ |