| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef __VDSO_EXTABLE_H |
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| 3 | #define __VDSO_EXTABLE_H |
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| 4 | |
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| 5 | /* |
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| 6 | * Inject exception fixup for vDSO code. Unlike normal exception fixup, |
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| 7 | * vDSO uses a dedicated handler the addresses are relative to the overall |
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| 8 | * exception table, not each individual entry. |
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| 9 | */ |
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| 10 | #ifdef __ASSEMBLY__ |
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| 11 | #define _ASM_VDSO_EXTABLE_HANDLE(from, to) \ |
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| 12 | ASM_VDSO_EXTABLE_HANDLE from to |
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| 13 | |
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| 14 | .macro ASM_VDSO_EXTABLE_HANDLE from:req to:req |
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| 15 | .pushsection __ex_table, "a" |
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| 16 | .long (\from) - __ex_table |
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| 17 | .long (\to) - __ex_table |
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| 18 | .popsection |
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| 19 | .endm |
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| 20 | #else |
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| 21 | #define _ASM_VDSO_EXTABLE_HANDLE(from, to) \ |
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| 22 | ".pushsection __ex_table, \"a\"\n" \ |
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| 23 | ".long (" #from ") - __ex_table\n" \ |
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| 24 | ".long (" #to ") - __ex_table\n" \ |
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| 25 | ".popsection\n" |
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| 26 | #endif |
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| 27 | |
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| 28 | #endif /* __VDSO_EXTABLE_H */ |
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| 29 | |
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