diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/lib/clear_user.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/lib/clear_user.S | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/ANDROID_3.4.5/arch/arm/lib/clear_user.S b/ANDROID_3.4.5/arch/arm/lib/clear_user.S deleted file mode 100644 index 14a0d988..00000000 --- a/ANDROID_3.4.5/arch/arm/lib/clear_user.S +++ /dev/null @@ -1,54 +0,0 @@ -/* - * linux/arch/arm/lib/clear_user.S - * - * Copyright (C) 1995, 1996,1997,1998 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/linkage.h> -#include <asm/assembler.h> - - .text - -/* Prototype: int __clear_user(void *addr, size_t sz) - * Purpose : clear some user memory - * Params : addr - user memory address to clear - * : sz - number of bytes to clear - * Returns : number of bytes NOT cleared - */ -ENTRY(__clear_user_std) -WEAK(__clear_user) - stmfd sp!, {r1, lr} - mov r2, #0 - cmp r1, #4 - blt 2f - ands ip, r0, #3 - beq 1f - cmp ip, #2 - strusr r2, r0, 1 - strusr r2, r0, 1, le - strusr r2, r0, 1, lt - rsb ip, ip, #4 - sub r1, r1, ip @ 7 6 5 4 3 2 1 -1: subs r1, r1, #8 @ -1 -2 -3 -4 -5 -6 -7 - strusr r2, r0, 4, pl, rept=2 - bpl 1b - adds r1, r1, #4 @ 3 2 1 0 -1 -2 -3 - strusr r2, r0, 4, pl -2: tst r1, #2 @ 1x 1x 0x 0x 1x 1x 0x - strusr r2, r0, 1, ne, rept=2 - tst r1, #1 @ x1 x0 x1 x0 x1 x0 x1 - it ne @ explicit IT needed for the label -USER( strnebt r2, [r0]) - mov r0, #0 - ldmfd sp!, {r1, pc} -ENDPROC(__clear_user) -ENDPROC(__clear_user_std) - - .pushsection .fixup,"ax" - .align 0 -9001: ldmfd sp!, {r0, pc} - .popsection - |