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