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