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kernel/linux-rt-4.4.41/arch/frv/lib/insl_ns.S 1.25 KB
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  /* insl_ns.S: input array of 4b words from device port without byte swapping
   *
   * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   *
   * 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.
   */
  
  
          .text
          .p2align	4
  
  ###############################################################################
  #
  # void __insl_ns(unsigned int port, void *buf, int n)
  #
  ###############################################################################
          .globl		__insl_ns
          .type		__insl_ns,@function
  __insl_ns:
  	andicc.p	gr9,#3,gr0,icc0
  	setlos		#4,gr4
  	bne		icc0,#0,__insl_ns_misaligned
  	subi		gr9,#4,gr9
  0:
  	ldi.p		@(gr8,#0),gr5
  	subicc		gr10,#1,gr10,icc0
  	stu.p		gr5,@(gr9,gr4)
  	bhi		icc0,#2,0b
  	bralr
  
  __insl_ns_misaligned:
  	subi.p		gr9,#1,gr9
  	setlos		#1,gr4
  0:
  	ldi		@(gr8,#0),gr5
  
  	srli		gr5,#24,gr6
  	stbu.p		gr6,@(gr9,gr4)
  	srli		gr5,#16,gr6
  	stbu.p		gr6,@(gr9,gr4)
  	srli		gr5,#8,gr6
  	stbu.p		gr6,@(gr9,gr4)
  	subicc		gr10,#1,gr10,icc0
  	stbu.p		gr5,@(gr9,gr4)
  	bhi		icc0,#2,0b
  	bralr
  
  	.size		__insl_ns, .-__insl_ns