diff options
| author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
| commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
| tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /arch/sparc/lib/strncpy_from_user_32.S | |
| parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) | |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'arch/sparc/lib/strncpy_from_user_32.S')
| -rw-r--r-- | arch/sparc/lib/strncpy_from_user_32.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/sparc/lib/strncpy_from_user_32.S b/arch/sparc/lib/strncpy_from_user_32.S new file mode 100644 index 00000000000..d77198976a6 --- /dev/null +++ b/arch/sparc/lib/strncpy_from_user_32.S @@ -0,0 +1,47 @@ +/* strncpy_from_user.S: Sparc strncpy from userspace. + * + * Copyright(C) 1996 David S. Miller + */ + +#include <asm/ptrace.h> +#include <asm/errno.h> + + .text + .align 4 + + /* Must return: + * + * -EFAULT for an exception + * count if we hit the buffer limit + * bytes copied if we hit a null byte + */ + + .globl __strncpy_from_user +__strncpy_from_user: + /* %o0=dest, %o1=src, %o2=count */ + mov %o2, %o3 +1: + subcc %o2, 1, %o2 + bneg 2f + nop +10: + ldub [%o1], %o4 + add %o0, 1, %o0 + cmp %o4, 0 + add %o1, 1, %o1 + bne 1b + stb %o4, [%o0 - 1] +2: + add %o2, 1, %o0 + retl + sub %o3, %o0, %o0 + + .section .fixup,#alloc,#execinstr + .align 4 +4: + retl + mov -EFAULT, %o0 + + .section __ex_table,#alloc + .align 4 + .word 10b, 4b |