mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-31 05:54:26 -04:00
80 lines
1.9 KiB
Diff
80 lines
1.9 KiB
Diff
From a05af27aec00eacf533ff111ba8eb3dec328d9af Mon Sep 17 00:00:00 2001
|
|
From: Kurt Mahan <kmahan@freescale.com>
|
|
Date: Thu, 22 May 2008 11:20:53 -0600
|
|
Subject: [PATCH] Initial vDSO header changes.
|
|
|
|
LTIBName: mcfv4e-vdso-headers
|
|
Signed-off-by: Kurt Mahan <kmahan@freescale.com>
|
|
---
|
|
include/asm-m68k/auxvec.h | 9 +++++++++
|
|
include/asm-m68k/elf.h | 31 +++++++++++++++++++++++++++++++
|
|
include/asm-m68k/page.h | 5 +++++
|
|
3 files changed, 45 insertions(+), 0 deletions(-)
|
|
|
|
--- a/include/asm-m68k/auxvec.h
|
|
+++ b/include/asm-m68k/auxvec.h
|
|
@@ -1,4 +1,13 @@
|
|
#ifndef __ASMm68k_AUXVEC_H
|
|
#define __ASMm68k_AUXVEC_H
|
|
+/*
|
|
+ * Architecture-neutral AT_ values in 0-17, leave some room
|
|
+ * for more of them.
|
|
+ */
|
|
+
|
|
+#ifdef CONFIG_VSYSCALL
|
|
+/* Entry point to the vsyscall page */
|
|
+#define AT_SYSINFO_EHDR 33
|
|
+#endif
|
|
|
|
#endif
|
|
--- a/include/asm-m68k/elf.h
|
|
+++ b/include/asm-m68k/elf.h
|
|
@@ -136,4 +136,35 @@ typedef struct user_m68kfp_struct elf_fp
|
|
|
|
#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
|
|
|
|
+/*
|
|
+ * VDSO
|
|
+ */
|
|
+#ifdef CONFIG_VSYSCALL
|
|
+extern unsigned int vdso_enabled;
|
|
+
|
|
+#define VDSO_BASE ((unsigned long)current->mm->context.vdso)
|
|
+#define VDSO_SYM(x) (VDSO_BASE + (unsigned long)(x))
|
|
+
|
|
+#define VSYSCALL_AUX_ENT \
|
|
+ if (vdso_enabled) \
|
|
+ NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE);
|
|
+
|
|
+/* additional pages */
|
|
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
|
|
+
|
|
+struct linux_binprm;
|
|
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
+ int executable_stack);
|
|
+
|
|
+#else
|
|
+/* no VSYSCALL_AUX_ENT */
|
|
+#define VSYSCALL_AUX_ENT
|
|
+#endif
|
|
+
|
|
+#define ARCH_DLINFO \
|
|
+do { \
|
|
+ /* vsyscall entry */ \
|
|
+ VSYSCALL_AUX_ENT; \
|
|
+} while (0);
|
|
+
|
|
#endif
|
|
--- a/include/asm-m68k/page.h
|
|
+++ b/include/asm-m68k/page.h
|
|
@@ -252,4 +252,9 @@ static inline __attribute_const__ int __
|
|
|
|
#include <asm-generic/page.h>
|
|
|
|
+#ifdef CONFIG_VSYSCALL
|
|
+/* vDSO support */
|
|
+#define __HAVE_ARCH_GATE_AREA
|
|
+#endif
|
|
+
|
|
#endif /* _M68K_PAGE_H */
|