summaryrefslogtreecommitdiffstats
path: root/arch/x86/include/asm/elf.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/include/asm/elf.h')
-rw-r--r--arch/x86/include/asm/elf.h35
1 files changed, 20 insertions, 15 deletions
diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 2c71182d30ef..1a055c81d864 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -75,7 +75,12 @@ typedef struct user_fxsr_struct elf_fpxregset_t;
#include <asm/vdso.h>
-extern unsigned int vdso_enabled;
+#ifdef CONFIG_X86_64
+extern unsigned int vdso64_enabled;
+#endif
+#if defined(CONFIG_X86_32) || defined(CONFIG_COMPAT)
+extern unsigned int vdso32_enabled;
+#endif
/*
* This is used to ensure we don't load something for the wrong architecture.
@@ -269,9 +274,9 @@ extern int force_personality32;
struct task_struct;
-#define ARCH_DLINFO_IA32(vdso_enabled) \
+#define ARCH_DLINFO_IA32 \
do { \
- if (vdso_enabled) { \
+ if (vdso32_enabled) { \
NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
} \
@@ -281,7 +286,7 @@ do { \
#define STACK_RND_MASK (0x7ff)
-#define ARCH_DLINFO ARCH_DLINFO_IA32(vdso_enabled)
+#define ARCH_DLINFO ARCH_DLINFO_IA32
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
@@ -292,16 +297,17 @@ do { \
#define ARCH_DLINFO \
do { \
- if (vdso_enabled) \
+ if (vdso64_enabled) \
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
- (unsigned long)current->mm->context.vdso); \
+ (unsigned long __force)current->mm->context.vdso); \
} while (0)
+/* As a historical oddity, the x32 and x86_64 vDSOs are controlled together. */
#define ARCH_DLINFO_X32 \
do { \
- if (vdso_enabled) \
+ if (vdso64_enabled) \
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
- (unsigned long)current->mm->context.vdso); \
+ (unsigned long __force)current->mm->context.vdso); \
} while (0)
#define AT_SYSINFO 32
@@ -310,7 +316,7 @@ do { \
if (test_thread_flag(TIF_X32)) \
ARCH_DLINFO_X32; \
else \
- ARCH_DLINFO_IA32(sysctl_vsyscall32)
+ ARCH_DLINFO_IA32
#define COMPAT_ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
@@ -319,18 +325,17 @@ else \
#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
#define VDSO_ENTRY \
- ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
+ ((unsigned long)current->mm->context.vdso + \
+ selected_vdso32->sym___kernel_vsyscall)
struct linux_binprm;
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
-extern int x32_setup_additional_pages(struct linux_binprm *bprm,
- int uses_interp);
-
-extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
-#define compat_arch_setup_additional_pages syscall32_setup_pages
+extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
+ int uses_interp);
+#define compat_arch_setup_additional_pages compat_arch_setup_additional_pages
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk