1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun/* ----------------------------------------------------------------------- * 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 1991, 1992 Linus Torvalds 5*4882a593Smuzhiyun * Copyright 2007 rPath, Inc. - All Rights Reserved 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * ----------------------------------------------------------------------- */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun#include <linux/linkage.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun/* 12*4882a593Smuzhiyun * Memory copy routines 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun .code16 16*4882a593Smuzhiyun .text 17*4882a593Smuzhiyun 18*4882a593SmuzhiyunSYM_FUNC_START_NOALIGN(memcpy) 19*4882a593Smuzhiyun pushw %si 20*4882a593Smuzhiyun pushw %di 21*4882a593Smuzhiyun movw %ax, %di 22*4882a593Smuzhiyun movw %dx, %si 23*4882a593Smuzhiyun pushw %cx 24*4882a593Smuzhiyun shrw $2, %cx 25*4882a593Smuzhiyun rep; movsl 26*4882a593Smuzhiyun popw %cx 27*4882a593Smuzhiyun andw $3, %cx 28*4882a593Smuzhiyun rep; movsb 29*4882a593Smuzhiyun popw %di 30*4882a593Smuzhiyun popw %si 31*4882a593Smuzhiyun retl 32*4882a593SmuzhiyunSYM_FUNC_END(memcpy) 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunSYM_FUNC_START_NOALIGN(memset) 35*4882a593Smuzhiyun pushw %di 36*4882a593Smuzhiyun movw %ax, %di 37*4882a593Smuzhiyun movzbl %dl, %eax 38*4882a593Smuzhiyun imull $0x01010101,%eax 39*4882a593Smuzhiyun pushw %cx 40*4882a593Smuzhiyun shrw $2, %cx 41*4882a593Smuzhiyun rep; stosl 42*4882a593Smuzhiyun popw %cx 43*4882a593Smuzhiyun andw $3, %cx 44*4882a593Smuzhiyun rep; stosb 45*4882a593Smuzhiyun popw %di 46*4882a593Smuzhiyun retl 47*4882a593SmuzhiyunSYM_FUNC_END(memset) 48*4882a593Smuzhiyun 49*4882a593SmuzhiyunSYM_FUNC_START_NOALIGN(copy_from_fs) 50*4882a593Smuzhiyun pushw %ds 51*4882a593Smuzhiyun pushw %fs 52*4882a593Smuzhiyun popw %ds 53*4882a593Smuzhiyun calll memcpy 54*4882a593Smuzhiyun popw %ds 55*4882a593Smuzhiyun retl 56*4882a593SmuzhiyunSYM_FUNC_END(copy_from_fs) 57*4882a593Smuzhiyun 58*4882a593SmuzhiyunSYM_FUNC_START_NOALIGN(copy_to_fs) 59*4882a593Smuzhiyun pushw %es 60*4882a593Smuzhiyun pushw %fs 61*4882a593Smuzhiyun popw %es 62*4882a593Smuzhiyun calll memcpy 63*4882a593Smuzhiyun popw %es 64*4882a593Smuzhiyun retl 65*4882a593SmuzhiyunSYM_FUNC_END(copy_to_fs) 66