3d1334064f
The address calculated by VDSO32_SYMBOL() is a pointer into userland. Add the __user annotation to fix related sparse warnings in its users. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Andy Lutomirski <luto@MIT.EDU> Link: http://lkml.kernel.org/r/1346621506-30857-3-git-send-email-minipli@googlemail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
35 lines
977 B
C
35 lines
977 B
C
#ifndef _ASM_X86_VDSO_H
|
|
#define _ASM_X86_VDSO_H
|
|
|
|
#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
|
|
extern const char VDSO32_PRELINK[];
|
|
|
|
/*
|
|
* Given a pointer to the vDSO image, find the pointer to VDSO32_name
|
|
* as that symbol is defined in the vDSO sources or linker script.
|
|
*/
|
|
#define VDSO32_SYMBOL(base, name) \
|
|
({ \
|
|
extern const char VDSO32_##name[]; \
|
|
(void __user *)(VDSO32_##name - VDSO32_PRELINK + \
|
|
(unsigned long)(base)); \
|
|
})
|
|
#endif
|
|
|
|
/*
|
|
* These symbols are defined with the addresses in the vsyscall page.
|
|
* See vsyscall-sigreturn.S.
|
|
*/
|
|
extern void __user __kernel_sigreturn;
|
|
extern void __user __kernel_rt_sigreturn;
|
|
|
|
/*
|
|
* These symbols are defined by vdso32.S to mark the bounds
|
|
* of the ELF DSO images included therein.
|
|
*/
|
|
extern const char vdso32_int80_start, vdso32_int80_end;
|
|
extern const char vdso32_syscall_start, vdso32_syscall_end;
|
|
extern const char vdso32_sysenter_start, vdso32_sysenter_end;
|
|
|
|
#endif /* _ASM_X86_VDSO_H */
|