summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/uaccess_64.h
diff options
context:
space:
mode:
authorGlauber Costa <gcosta@redhat.com>2008-06-25 11:48:29 -0300
committerIngo Molnar <mingo@elte.hu>2008-07-09 09:14:22 +0200
commitdc70ddf4098de043ac52f623c7573a11f2ae3d09 (patch)
tree0641f33c243a7d1feec051670cdced9ffec36535 /include/asm-x86/uaccess_64.h
parentd42e6af613375be7a9a431628ecd742e87230554 (diff)
downloadop-kernel-dev-dc70ddf4098de043ac52f623c7573a11f2ae3d09.zip
op-kernel-dev-dc70ddf4098de043ac52f623c7573a11f2ae3d09.tar.gz
x86: merge __put_user_asm and its user.
Move both __put_user_asm and __put_user_size to uaccess.h. i386 already had a special function for 64-bit access, so for x86_64, we just define a macro with the same name. Note that for X86_64, CONFIG_X86_WP_WORKS_OK will always be defined, so the #else part will never be even compiled in. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/uaccess_64.h')
-rw-r--r--include/asm-x86/uaccess_64.h51
1 files changed, 0 insertions, 51 deletions
diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h
index 6532d63..42c01aa 100644
--- a/include/asm-x86/uaccess_64.h
+++ b/include/asm-x86/uaccess_64.h
@@ -34,14 +34,6 @@ extern void __put_user_bad(void);
#define __get_user_unaligned __get_user
#define __put_user_unaligned __put_user
-#define __put_user_nocheck(x, ptr, size) \
-({ \
- int __pu_err; \
- __put_user_size((x), (ptr), (size), __pu_err, -EFAULT); \
- __pu_err; \
-})
-
-
#define __put_user_check(x, ptr, size) \
({ \
int __pu_err; \
@@ -65,49 +57,6 @@ extern void __put_user_bad(void);
__pu_err; \
})
-#define __put_user_size(x, ptr, size, retval, errret) \
-do { \
- retval = 0; \
- __chk_user_ptr(ptr); \
- switch (size) { \
- case 1: \
- __put_user_asm(x, ptr, retval, "b", "b", "iq", errret);\
- break; \
- case 2: \
- __put_user_asm(x, ptr, retval, "w", "w", "ir", errret);\
- break; \
- case 4: \
- __put_user_asm(x, ptr, retval, "l", "k", "ir", errret);\
- break; \
- case 8: \
- __put_user_asm(x, ptr, retval, "q", "", "Zr", errret); \
- break; \
- default: \
- __put_user_bad(); \
- } \
-} while (0)
-
-/* FIXME: this hack is definitely wrong -AK */
-struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct __user *)(x))
-
-/*
- * Tell gcc we read from memory instead of writing: this is because
- * we do not write to any memory gcc knows about, so there are no
- * aliasing issues.
- */
-#define __put_user_asm(x, addr, err, itype, rtype, ltype, errno) \
- asm volatile("1: mov"itype" %"rtype"1,%2\n" \
- "2:\n" \
- ".section .fixup, \"ax\"\n" \
- "3: mov %3,%0\n" \
- " jmp 2b\n" \
- ".previous\n" \
- _ASM_EXTABLE(1b, 3b) \
- : "=r"(err) \
- : ltype (x), "m" (__m(addr)), "i" (errno), "0" (err))
-
-
#define __get_user_nocheck(x, ptr, size) \
({ \
int __gu_err; \
OpenPOWER on IntegriCloud