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cris: get rid of zeroing in __asm_copy_from_user_N for N > 4
authorAl Viro <viro@zeniv.linux.org.uk>
Sun, 19 Mar 2017 19:17:25 +0000 (15:17 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Tue, 28 Mar 2017 22:23:30 +0000 (18:23 -0400)
only one user for those

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
arch/cris/include/arch-v10/arch/uaccess.h patch | blob | blame | history
arch/cris/include/arch-v32/arch/uaccess.h patch | blob | blame | history

diff --git a/arch/cris/include/arch-v10/arch/uaccess.h b/arch/cris/include/arch-v10/arch/uaccess.h
index 65b02d9b605af168fa619463e43b9ab0636aee76..f68d3d19df721633bb37bb3539e3432dbd61033d 100644 (file)
--- a/arch/cris/include/arch-v10/arch/uaccess.h
+++ b/arch/cris/include/arch-v10/arch/uaccess.h
@@ -210,8 +210,7 @@ __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 +218,7 @@ __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 +228,7 @@ __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 +236,7 @@ __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 +246,7 @@ __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 +254,7 @@ __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 +264,7 @@ __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 +272,7 @@ __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 +282,7 @@ __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 +290,7 @@ __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 +300,7 @@ __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 +308,7 @@ __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 +319,7 @@ __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 +330,7 @@ __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 3196019706cb4f027bd7587d16e861187946ae07..7a0032a4b9fbcf36ece697f4514d034424fc8222 100644 (file)
--- a/arch/cris/include/arch-v32/arch/uaccess.h
+++ b/arch/cris/include/arch-v32/arch/uaccess.h
@@ -224,8 +224,7 @@ __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 +233,7 @@ __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 +244,7 @@ __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 +253,7 @@ __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 +264,7 @@ __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 +273,7 @@ __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 +284,7 @@ __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 +293,7 @@ __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 +304,7 @@ __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 +313,7 @@ __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 +324,7 @@ __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 +333,7 @@ __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 +346,7 @@ __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 +359,7 @@ __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")