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-rw-r--r--arch/cris/include/arch-v10/arch/uaccess.h46
-rw-r--r--arch/cris/include/arch-v32/arch/uaccess.h54
-rw-r--r--arch/cris/include/asm/Kbuild1
-rw-r--r--arch/cris/include/asm/pgtable.h1
-rw-r--r--arch/cris/include/asm/uaccess.h67
5 files changed, 49 insertions, 120 deletions
diff --git a/arch/cris/include/arch-v10/arch/uaccess.h b/arch/cris/include/arch-v10/arch/uaccess.h
index 65b02d9b605a..5477c98c2281 100644
--- a/arch/cris/include/arch-v10/arch/uaccess.h
+++ b/arch/cris/include/arch-v10/arch/uaccess.h
@@ -172,16 +172,14 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_user_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"2: move.b $r9,[%0+]\n", \
- "3: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "3: addq 1,%2\n", \
" .dword 2b,3b\n")
#define __asm_copy_from_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
__asm_copy_user_cont(to, from, ret, \
" move.w [%1+],$r9\n" \
"2: move.w $r9,[%0+]\n" COPY, \
- "3: addq 2,%2\n" \
- " clear.w [%0+]\n" FIXUP, \
+ "3: addq 2,%2\n" FIXUP, \
" .dword 2b,3b\n" TENTRY)
#define __asm_copy_from_user_2(to, from, ret) \
@@ -191,16 +189,14 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_2x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"4: move.b $r9,[%0+]\n", \
- "5: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "5: addq 1,%2\n", \
" .dword 4b,5b\n")
#define __asm_copy_from_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
__asm_copy_user_cont(to, from, ret, \
" move.d [%1+],$r9\n" \
"2: move.d $r9,[%0+]\n" COPY, \
- "3: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ "3: addq 4,%2\n" FIXUP, \
" .dword 2b,3b\n" TENTRY)
#define __asm_copy_from_user_4(to, from, ret) \
@@ -210,8 +206,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_4x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"4: move.b $r9,[%0+]\n", \
- "5: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "5: addq 1,%2\n", \
" .dword 4b,5b\n")
#define __asm_copy_from_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -219,7 +214,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.w [%1+],$r9\n" \
"4: move.w $r9,[%0+]\n" COPY, \
"5: addq 2,%2\n" \
- " clear.w [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 4b,5b\n" TENTRY)
#define __asm_copy_from_user_6(to, from, ret) \
@@ -229,8 +224,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_6x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"6: move.b $r9,[%0+]\n", \
- "7: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "7: addq 1,%2\n", \
" .dword 6b,7b\n")
#define __asm_copy_from_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -238,7 +232,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d [%1+],$r9\n" \
"4: move.d $r9,[%0+]\n" COPY, \
"5: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 4b,5b\n" TENTRY)
#define __asm_copy_from_user_8(to, from, ret) \
@@ -248,8 +242,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_8x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"6: move.b $r9,[%0+]\n", \
- "7: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "7: addq 1,%2\n", \
" .dword 6b,7b\n")
#define __asm_copy_from_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -257,7 +250,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.w [%1+],$r9\n" \
"6: move.w $r9,[%0+]\n" COPY, \
"7: addq 2,%2\n" \
- " clear.w [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 6b,7b\n" TENTRY)
#define __asm_copy_from_user_10(to, from, ret) \
@@ -267,8 +260,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_10x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"8: move.b $r9,[%0+]\n", \
- "9: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "9: addq 1,%2\n", \
" .dword 8b,9b\n")
#define __asm_copy_from_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -276,7 +268,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d [%1+],$r9\n" \
"6: move.d $r9,[%0+]\n" COPY, \
"7: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 6b,7b\n" TENTRY)
#define __asm_copy_from_user_12(to, from, ret) \
@@ -286,8 +278,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_12x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"8: move.b $r9,[%0+]\n", \
- "9: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "9: addq 1,%2\n", \
" .dword 8b,9b\n")
#define __asm_copy_from_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -295,7 +286,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.w [%1+],$r9\n" \
"8: move.w $r9,[%0+]\n" COPY, \
"9: addq 2,%2\n" \
- " clear.w [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 8b,9b\n" TENTRY)
#define __asm_copy_from_user_14(to, from, ret) \
@@ -305,8 +296,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_14x_cont(to, from, ret, \
" move.b [%1+],$r9\n" \
"10: move.b $r9,[%0+]\n", \
- "11: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "11: addq 1,%2\n", \
" .dword 10b,11b\n")
#define __asm_copy_from_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -314,7 +304,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d [%1+],$r9\n" \
"8: move.d $r9,[%0+]\n" COPY, \
"9: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 8b,9b\n" TENTRY)
#define __asm_copy_from_user_16(to, from, ret) \
@@ -325,7 +315,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d [%1+],$r9\n" \
"10: move.d $r9,[%0+]\n" COPY, \
"11: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 10b,11b\n" TENTRY)
#define __asm_copy_from_user_20(to, from, ret) \
@@ -336,7 +326,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d [%1+],$r9\n" \
"12: move.d $r9,[%0+]\n" COPY, \
"13: addq 4,%2\n" \
- " clear.d [%0+]\n" FIXUP, \
+ FIXUP, \
" .dword 12b,13b\n" TENTRY)
#define __asm_copy_from_user_24(to, from, ret) \
diff --git a/arch/cris/include/arch-v32/arch/uaccess.h b/arch/cris/include/arch-v32/arch/uaccess.h
index 3196019706cb..dc2ce090f624 100644
--- a/arch/cris/include/arch-v32/arch/uaccess.h
+++ b/arch/cris/include/arch-v32/arch/uaccess.h
@@ -178,8 +178,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"2: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
"3: addq 1,%2\n" \
- " jump 1b\n" \
- " clear.b [%0+]\n", \
+ " jump 1b\n", \
" .dword 2b,3b\n")
#define __asm_copy_from_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -189,8 +188,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.w $acr,[%0+]\n", \
FIXUP \
"3: addq 2,%2\n" \
- " jump 1b\n" \
- " clear.w [%0+]\n", \
+ " jump 1b\n", \
TENTRY \
" .dword 2b,3b\n")
@@ -201,8 +199,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_2x_cont(to, from, ret, \
"4: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "5: addq 1,%2\n", \
" .dword 4b,5b\n")
#define __asm_copy_from_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -212,8 +209,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
" move.d $acr,[%0+]\n", \
FIXUP \
"3: addq 4,%2\n" \
- " jump 1b\n" \
- " clear.d [%0+]\n", \
+ " jump 1b\n", \
TENTRY \
" .dword 2b,3b\n")
@@ -224,8 +220,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_4x_cont(to, from, ret, \
"4: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "5: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "5: addq 1,%2\n", \
" .dword 4b,5b\n")
#define __asm_copy_from_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -234,8 +229,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"4: move.w [%1+],$acr\n" \
" move.w $acr,[%0+]\n", \
FIXUP \
- "5: addq 2,%2\n" \
- " clear.w [%0+]\n", \
+ "5: addq 2,%2\n", \
TENTRY \
" .dword 4b,5b\n")
@@ -246,8 +240,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_6x_cont(to, from, ret, \
"6: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "7: addq 1,%2\n", \
" .dword 6b,7b\n")
#define __asm_copy_from_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -256,8 +249,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"4: move.d [%1+],$acr\n" \
" move.d $acr,[%0+]\n", \
FIXUP \
- "5: addq 4,%2\n" \
- " clear.d [%0+]\n", \
+ "5: addq 4,%2\n", \
TENTRY \
" .dword 4b,5b\n")
@@ -268,8 +260,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_8x_cont(to, from, ret, \
"6: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "7: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "7: addq 1,%2\n", \
" .dword 6b,7b\n")
#define __asm_copy_from_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -278,8 +269,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"6: move.w [%1+],$acr\n" \
" move.w $acr,[%0+]\n", \
FIXUP \
- "7: addq 2,%2\n" \
- " clear.w [%0+]\n", \
+ "7: addq 2,%2\n", \
TENTRY \
" .dword 6b,7b\n")
@@ -290,8 +280,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_10x_cont(to, from, ret, \
"8: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "9: addq 1,%2\n", \
" .dword 8b,9b\n")
#define __asm_copy_from_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -300,8 +289,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"6: move.d [%1+],$acr\n" \
" move.d $acr,[%0+]\n", \
FIXUP \
- "7: addq 4,%2\n" \
- " clear.d [%0+]\n", \
+ "7: addq 4,%2\n", \
TENTRY \
" .dword 6b,7b\n")
@@ -312,8 +300,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_12x_cont(to, from, ret, \
"8: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "9: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "9: addq 1,%2\n", \
" .dword 8b,9b\n")
#define __asm_copy_from_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -322,8 +309,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"8: move.w [%1+],$acr\n" \
" move.w $acr,[%0+]\n", \
FIXUP \
- "9: addq 2,%2\n" \
- " clear.w [%0+]\n", \
+ "9: addq 2,%2\n", \
TENTRY \
" .dword 8b,9b\n")
@@ -334,8 +320,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
__asm_copy_from_user_14x_cont(to, from, ret, \
"10: move.b [%1+],$acr\n" \
" move.b $acr,[%0+]\n", \
- "11: addq 1,%2\n" \
- " clear.b [%0+]\n", \
+ "11: addq 1,%2\n", \
" .dword 10b,11b\n")
#define __asm_copy_from_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \
@@ -344,8 +329,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"8: move.d [%1+],$acr\n" \
" move.d $acr,[%0+]\n", \
FIXUP \
- "9: addq 4,%2\n" \
- " clear.d [%0+]\n", \
+ "9: addq 4,%2\n", \
TENTRY \
" .dword 8b,9b\n")
@@ -358,8 +342,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"10: move.d [%1+],$acr\n" \
" move.d $acr,[%0+]\n", \
FIXUP \
- "11: addq 4,%2\n" \
- " clear.d [%0+]\n", \
+ "11: addq 4,%2\n", \
TENTRY \
" .dword 10b,11b\n")
@@ -372,8 +355,7 @@ __do_strncpy_from_user(char *dst, const char *src, long count)
"12: move.d [%1+],$acr\n" \
" move.d $acr,[%0+]\n", \
FIXUP \
- "13: addq 4,%2\n" \
- " clear.d [%0+]\n", \
+ "13: addq 4,%2\n", \
TENTRY \
" .dword 12b,13b\n")
diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
index 0f5132b08896..2890099992a9 100644
--- a/arch/cris/include/asm/Kbuild
+++ b/arch/cris/include/asm/Kbuild
@@ -9,6 +9,7 @@ generic-y += device.h
generic-y += div64.h
generic-y += errno.h
generic-y += exec.h
+generic-y += extable.h
generic-y += emergency-restart.h
generic-y += fcntl.h
generic-y += futex.h
diff --git a/arch/cris/include/asm/pgtable.h b/arch/cris/include/asm/pgtable.h
index 2a3210ba4c72..fa3a73004cc5 100644
--- a/arch/cris/include/asm/pgtable.h
+++ b/arch/cris/include/asm/pgtable.h
@@ -6,6 +6,7 @@
#define _CRIS_PGTABLE_H
#include <asm/page.h>
+#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopmd.h>
#ifndef __ASSEMBLY__
diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h
index 5f5b8f53d2d7..0d473aec3066 100644
--- a/arch/cris/include/asm/uaccess.h
+++ b/arch/cris/include/asm/uaccess.h
@@ -50,23 +50,7 @@
#define access_ok(type, addr, size) __access_ok((unsigned long)(addr), (size))
#include <arch/uaccess.h>
-
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path. This means when everything is well,
- * we don't even have to jump over them. Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry {
- unsigned long insn, fixup;
-};
+#include <asm/extable.h>
/*
* These are the main single-value transfer routines. They automatically
@@ -185,7 +169,7 @@ extern long __get_user_bad(void);
live in lib/usercopy.c */
extern unsigned long __copy_user(void __user *to, const void *from, unsigned long n);
-extern unsigned long __copy_user_zeroing(void *to, const void __user *from, unsigned long n);
+extern unsigned long __copy_user_in(void *to, const void __user *from, unsigned long n);
extern unsigned long __do_clear_user(void __user *to, unsigned long n);
static inline long
@@ -252,7 +236,7 @@ __constant_copy_from_user(void *to, const void __user *from, unsigned long n)
else if (n == 24)
__asm_copy_from_user_24(to, from, ret);
else
- ret = __copy_user_zeroing(to, from, n);
+ ret = __copy_user_in(to, from, n);
return ret;
}
@@ -352,62 +336,33 @@ static inline size_t clear_user(void __user *to, size_t n)
return __do_clear_user(to, n);
}
-static inline size_t copy_from_user(void *to, const void __user *from, size_t n)
+static inline unsigned long
+raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
- if (unlikely(!access_ok(VERIFY_READ, from, n))) {
- memset(to, 0, n);
- return n;
- }
if (__builtin_constant_p(n))
return __constant_copy_from_user(to, from, n);
else
- return __copy_user_zeroing(to, from, n);
+ return __copy_user_in(to, from, n);
}
-static inline size_t copy_to_user(void __user *to, const void *from, size_t n)
+static inline unsigned long
+raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
- if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
- return n;
if (__builtin_constant_p(n))
return __constant_copy_to_user(to, from, n);
else
return __copy_user(to, from, n);
}
-/* We let the __ versions of copy_from/to_user inline, because they're often
- * used in fast paths and have only a small space overhead.
- */
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
static inline unsigned long
-__generic_copy_from_user_nocheck(void *to, const void __user *from,
- unsigned long n)
-{
- return __copy_user_zeroing(to, from, n);
-}
-
-static inline unsigned long
-__generic_copy_to_user_nocheck(void __user *to, const void *from,
- unsigned long n)
-{
- return __copy_user(to, from, n);
-}
-
-static inline unsigned long
-__generic_clear_user_nocheck(void __user *to, unsigned long n)
+__clear_user(void __user *to, unsigned long n)
{
return __do_clear_user(to, n);
}
-/* without checking */
-
-#define __copy_to_user(to, from, n) \
- __generic_copy_to_user_nocheck((to), (from), (n))
-#define __copy_from_user(to, from, n) \
- __generic_copy_from_user_nocheck((to), (from), (n))
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-#define __clear_user(to, n) __generic_clear_user_nocheck((to), (n))
-
#define strlen_user(str) strnlen_user((str), 0x7ffffffe)
#endif /* _CRIS_UACCESS_H */
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-19 01:15:27 +0300