mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-07 17:19:02 +00:00
1713ce7c43
Define the layout of the data structure shared between kernel and userspace. Track the vdso address in the mm_context; needed for communicating AT_SYSINFO_EHDR to the ELF loader. Add declarations for arm_install_vdso; implementation is in a following patch. Define AT_SYSINFO_EHDR, and, if CONFIG_VDSO=y, report the vdso shared object address via the ELF auxiliary vector. Note - this adds the AT_SYSINFO_EHDR in a new user-visible header asm/auxvec.h; this is consistent with other architectures. Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
32 lines
503 B
C
32 lines
503 B
C
#ifndef __ASM_VDSO_H
|
|
#define __ASM_VDSO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct mm_struct;
|
|
|
|
#ifdef CONFIG_VDSO
|
|
|
|
void arm_install_vdso(struct mm_struct *mm, unsigned long addr);
|
|
|
|
extern char vdso_start, vdso_end;
|
|
|
|
extern unsigned int vdso_total_pages;
|
|
|
|
#else /* CONFIG_VDSO */
|
|
|
|
static inline void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
|
|
{
|
|
}
|
|
|
|
#define vdso_total_pages 0
|
|
|
|
#endif /* CONFIG_VDSO */
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __ASM_VDSO_H */
|