tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_VDSO_H
2#define _ASM_X86_VDSO_H
3
4#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
5extern const char VDSO32_PRELINK[];
6
7/*
8 * Given a pointer to the vDSO image, find the pointer to VDSO32_name
9 * as that symbol is defined in the vDSO sources or linker script.
10 */
11#define VDSO32_SYMBOL(base, name) \
12({ \
13 extern const char VDSO32_##name[]; \
14 (void __user *)(VDSO32_##name - VDSO32_PRELINK + \
15 (unsigned long)(base)); \
16})
17#endif
18
19/*
20 * These symbols are defined with the addresses in the vsyscall page.
21 * See vsyscall-sigreturn.S.
22 */
23extern void __user __kernel_sigreturn;
24extern void __user __kernel_rt_sigreturn;
25
26/*
27 * These symbols are defined by vdso32.S to mark the bounds
28 * of the ELF DSO images included therein.
29 */
30extern const char vdso32_int80_start, vdso32_int80_end;
31extern const char vdso32_syscall_start, vdso32_syscall_end;
32extern const char vdso32_sysenter_start, vdso32_sysenter_end;
33
34#endif /* _ASM_X86_VDSO_H */