diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/lib/csumpartialcopyuser.S')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/lib/csumpartialcopyuser.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/ANDROID_3.4.5/arch/arm/lib/csumpartialcopyuser.S b/ANDROID_3.4.5/arch/arm/lib/csumpartialcopyuser.S deleted file mode 100644 index 7d08b43d..00000000 --- a/ANDROID_3.4.5/arch/arm/lib/csumpartialcopyuser.S +++ /dev/null @@ -1,83 +0,0 @@ -/* - * linux/arch/arm/lib/csumpartialcopyuser.S - * - * Copyright (C) 1995-1998 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. - * - * 27/03/03 Ian Molton Clean up CONFIG_CPU - * - */ -#include <linux/linkage.h> -#include <asm/assembler.h> -#include <asm/errno.h> -#include <asm/asm-offsets.h> - - .text - - .macro save_regs - stmfd sp!, {r1, r2, r4 - r8, lr} - .endm - - .macro load_regs - ldmfd sp!, {r1, r2, r4 - r8, pc} - .endm - - .macro load1b, reg1 - ldrusr \reg1, r0, 1 - .endm - - .macro load2b, reg1, reg2 - ldrusr \reg1, r0, 1 - ldrusr \reg2, r0, 1 - .endm - - .macro load1l, reg1 - ldrusr \reg1, r0, 4 - .endm - - .macro load2l, reg1, reg2 - ldrusr \reg1, r0, 4 - ldrusr \reg2, r0, 4 - .endm - - .macro load4l, reg1, reg2, reg3, reg4 - ldrusr \reg1, r0, 4 - ldrusr \reg2, r0, 4 - ldrusr \reg3, r0, 4 - ldrusr \reg4, r0, 4 - .endm - -/* - * unsigned int - * csum_partial_copy_from_user(const char *src, char *dst, int len, int sum, int *err_ptr) - * r0 = src, r1 = dst, r2 = len, r3 = sum, [sp] = *err_ptr - * Returns : r0 = checksum, [[sp, #0], #0] = 0 or -EFAULT - */ - -#define FN_ENTRY ENTRY(csum_partial_copy_from_user) -#define FN_EXIT ENDPROC(csum_partial_copy_from_user) - -#include "csumpartialcopygeneric.S" - -/* - * FIXME: minor buglet here - * We don't return the checksum for the data present in the buffer. To do - * so properly, we would have to add in whatever registers were loaded before - * the fault, which, with the current asm above is not predictable. - */ - .pushsection .fixup,"ax" - .align 4 -9001: mov r4, #-EFAULT - ldr r5, [sp, #8*4] @ *err_ptr - str r4, [r5] - ldmia sp, {r1, r2} @ retrieve dst, len - add r2, r2, r1 - mov r0, #0 @ zero the buffer -9002: teq r2, r1 - strneb r0, [r1], #1 - bne 9002b - load_regs - .popsection |