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Diffstat (limited to 'arch/arm26/lib/putuser.S')
| -rw-r--r-- | arch/arm26/lib/putuser.S | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/arch/arm26/lib/putuser.S b/arch/arm26/lib/putuser.S deleted file mode 100644 index 46c7f15f9f2..00000000000 --- a/arch/arm26/lib/putuser.S +++ /dev/null @@ -1,109 +0,0 @@ -/* - * linux/arch/arm26/lib/putuser.S - * - * Copyright (C) 2001 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. - * - * Idea from x86 version, (C) Copyright 1998 Linus Torvalds - * - * These functions have a non-standard call interface to make - * them more efficient, especially as they return an error - * value in addition to the "real" return value. - * - * __put_user_X - * - * Inputs: r0 contains the address - * r1, r2 contains the value - * Outputs: r0 is the error code - * lr corrupted - * - * No other registers must be altered. (see include/asm-arm/uaccess.h - * for specific ASM register usage). - * - * Note that ADDR_LIMIT is either 0 or 0xc0000000 - * Note also that it is intended that __put_user_bad is not global. - */ -#include <asm/asm-offsets.h> -#include <asm/thread_info.h> -#include <asm/errno.h> - - .global __put_user_1 -__put_user_1: - bic r2, sp, #0x1f00 - bic r2, r2, #0x00ff - str lr, [sp, #-4]! - ldr r2, [r2, #TI_ADDR_LIMIT] - sub r2, r2, #1 - cmp r0, r2 - bge __put_user_bad -1: cmp r0, #0x02000000 - strlsbt r1, [r0] - strgeb r1, [r0] - mov r0, #0 - ldmfd sp!, {pc}^ - - .global __put_user_2 -__put_user_2: - bic r2, sp, #0x1f00 - bic r2, r2, #0x00ff - str lr, [sp, #-4]! - ldr r2, [r2, #TI_ADDR_LIMIT] - sub r2, r2, #2 - cmp r0, r2 - bge __put_user_bad -2: cmp r0, #0x02000000 - strlsbt r1, [r0], #1 - strgeb r1, [r0], #1 - mov r1, r1, lsr #8 -3: strlsbt r1, [r0] - strgeb r1, [r0] - mov r0, #0 - ldmfd sp!, {pc}^ - - .global __put_user_4 -__put_user_4: - bic r2, sp, #0x1f00 - bic r2, r2, #0x00ff - str lr, [sp, #-4]! - ldr r2, [r2, #TI_ADDR_LIMIT] - sub r2, r2, #4 - cmp r0, r2 -4: bge __put_user_bad - cmp r0, #0x02000000 - strlst r1, [r0] - strge r1, [r0] - mov r0, #0 - ldmfd sp!, {pc}^ - - .global __put_user_8 -__put_user_8: - bic ip, sp, #0x1f00 - bic ip, ip, #0x00ff - str lr, [sp, #-4]! - ldr ip, [ip, #TI_ADDR_LIMIT] - sub ip, ip, #8 - cmp r0, ip - bge __put_user_bad - cmp r0, #0x02000000 -5: strlst r1, [r0], #4 -6: strlst r2, [r0] - strge r1, [r0], #4 - strge r2, [r0] - mov r0, #0 - ldmfd sp!, {pc}^ - -__put_user_bad: - mov r0, #-EFAULT - mov pc, lr - -.section __ex_table, "a" - .long 1b, __put_user_bad - .long 2b, __put_user_bad - .long 3b, __put_user_bad - .long 4b, __put_user_bad - .long 5b, __put_user_bad - .long 6b, __put_user_bad -.previous |