diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/openrisc/lib/string.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/openrisc/lib/string.S | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/ANDROID_3.4.5/arch/openrisc/lib/string.S b/ANDROID_3.4.5/arch/openrisc/lib/string.S deleted file mode 100644 index 465f04bc..00000000 --- a/ANDROID_3.4.5/arch/openrisc/lib/string.S +++ /dev/null @@ -1,204 +0,0 @@ -/* - * OpenRISC string.S - * - * Linux architectural port borrowing liberally from similar works of - * others. All original copyrights apply as per the original source - * declaration. - * - * Modifications for the OpenRISC architecture: - * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> - * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/linkage.h> -#include <asm/errno.h> - - /* - * this can be optimized by doing gcc inline assemlby with - * proper constraints (no need to save args registers...) - * - */ - - -/* - * - * int __copy_tofrom_user(void *to, const void *from, unsigned long size); - * - * NOTE: it returns number of bytes NOT copied !!! - * - */ - .global __copy_tofrom_user -__copy_tofrom_user: - l.addi r1,r1,-12 - l.sw 0(r1),r6 - l.sw 4(r1),r4 - l.sw 8(r1),r3 - - l.addi r11,r5,0 -2: l.sfeq r11,r0 - l.bf 1f - l.addi r11,r11,-1 -8: l.lbz r6,0(r4) -9: l.sb 0(r3),r6 - l.addi r3,r3,1 - l.j 2b - l.addi r4,r4,1 -1: - l.addi r11,r11,1 // r11 holds the return value - - l.lwz r6,0(r1) - l.lwz r4,4(r1) - l.lwz r3,8(r1) - l.jr r9 - l.addi r1,r1,12 - - .section .fixup, "ax" -99: - l.j 1b - l.nop - .previous - - .section __ex_table, "a" - .long 8b, 99b // read fault - .long 9b, 99b // write fault - .previous - -/* - * unsigned long clear_user(void *addr, unsigned long size) ; - * - * NOTE: it returns number of bytes NOT cleared !!! - */ - .global __clear_user -__clear_user: - l.addi r1,r1,-8 - l.sw 0(r1),r4 - l.sw 4(r1),r3 - -2: l.sfeq r4,r0 - l.bf 1f - l.addi r4,r4,-1 -9: l.sb 0(r3),r0 - l.j 2b - l.addi r3,r3,1 - -1: - l.addi r11,r4,1 - - l.lwz r4,0(r1) - l.lwz r3,4(r1) - l.jr r9 - l.addi r1,r1,8 - - .section .fixup, "ax" -99: - l.j 1b - l.nop - .previous - - .section __ex_table, "a" - .long 9b, 99b // write fault - .previous - -/* - * long strncpy_from_user(char *dst, const char *src, long count) - * - * - */ - .global __strncpy_from_user -__strncpy_from_user: - l.addi r1,r1,-16 - l.sw 0(r1),r6 - l.sw 4(r1),r5 - l.sw 8(r1),r4 - l.sw 12(r1),r3 - - l.addi r11,r5,0 -2: l.sfeq r5,r0 - l.bf 1f - l.addi r5,r5,-1 -8: l.lbz r6,0(r4) - l.sfeq r6,r0 - l.bf 1f -9: l.sb 0(r3),r6 - l.addi r3,r3,1 - l.j 2b - l.addi r4,r4,1 -1: - l.lwz r6,0(r1) - l.addi r5,r5,1 - l.sub r11,r11,r5 // r11 holds the return value - - l.lwz r6,0(r1) - l.lwz r5,4(r1) - l.lwz r4,8(r1) - l.lwz r3,12(r1) - l.jr r9 - l.addi r1,r1,16 - - .section .fixup, "ax" -99: - l.movhi r11,hi(-EFAULT) - l.ori r11,r11,lo(-EFAULT) - - l.lwz r6,0(r1) - l.lwz r5,4(r1) - l.lwz r4,8(r1) - l.lwz r3,12(r1) - l.jr r9 - l.addi r1,r1,16 - .previous - - .section __ex_table, "a" - .long 8b, 99b // read fault - .previous - -/* - * extern int __strnlen_user(const char *str, long len, unsigned long top); - * - * - * RTRN: - length of a string including NUL termination character - * - on page fault 0 - */ - - .global __strnlen_user -__strnlen_user: - l.addi r1,r1,-8 - l.sw 0(r1),r6 - l.sw 4(r1),r3 - - l.addi r11,r0,0 -2: l.sfeq r11,r4 - l.bf 1f - l.addi r11,r11,1 -8: l.lbz r6,0(r3) - l.sfeq r6,r0 - l.bf 1f - l.sfgeu r3,r5 // are we over the top ? - l.bf 99f - l.j 2b - l.addi r3,r3,1 - -1: - l.lwz r6,0(r1) - l.lwz r3,4(r1) - l.jr r9 - l.addi r1,r1,8 - - .section .fixup, "ax" -99: - l.addi r11,r0,0 - - l.lwz r6,0(r1) - l.lwz r3,4(r1) - l.jr r9 - l.addi r1,r1,8 - .previous - - .section __ex_table, "a" - .long 8b, 99b // read fault - .previous |