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Diffstat (limited to 'newlib/libc/machine/i960/memset.S')
| -rw-r--r-- | newlib/libc/machine/i960/memset.S | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/newlib/libc/machine/i960/memset.S b/newlib/libc/machine/i960/memset.S deleted file mode 100644 index 9121d4524..000000000 --- a/newlib/libc/machine/i960/memset.S +++ /dev/null @@ -1,121 +0,0 @@ -/******************************************************************************* - * - * Copyright (c) 1993 Intel Corporation - * - * Intel hereby grants you permission to copy, modify, and distribute this - * software and its documentation. Intel grants this permission provided - * that the above copyright notice appears in all copies and that both the - * copyright notice and this permission notice appear in supporting - * documentation. In addition, Intel grants this permission provided that - * you prominently mark as "not part of the original" any modifications - * made to this software or documentation, and that the name of Intel - * Corporation not be used in advertising or publicity pertaining to - * distribution of the software or the documentation without specific, - * written prior permission. - * - * Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR - * IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY - * OR FITNESS FOR A PARTICULAR PURPOSE. Intel makes no guarantee or - * representations regarding the use of, or the results of the use of, - * the software and documentation in terms of correctness, accuracy, - * reliability, currentness, or otherwise; and you rely on the software, - * documentation and results solely at your own risk. - * - * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS, - * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES - * OF ANY KIND. IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM - * PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER. - * - ******************************************************************************/ - - .file "memset.s" -#ifdef __PIC - .pic -#endif -#ifdef __PID - .pid -#endif -/* - * (c) copyright 1989,1993 Intel Corp., all rights reserved - */ - -/* - procedure memset (optimized assembler version: 80960K series, 80960CA) - - dest_addr = memset (dest_addr, char, len) - - Fill len bytes pointed to by dest_addr with the value of char. - Return the original address of dest_addr. - - This program avoids performing unaligned accesses. It stores - from zero to seven bytes, and then stores aligned longwords, - and then stores from zero to seven bytes, as necessary to - store len bytes starting at dest_addr. - - At the time of this writing, only g0 thru g7 and g13 are available - for use in this leafproc; other registers would have to be saved and - restored. These nine registers, plus tricky use of g14 are sufficient - to implement the routine. -*/ - - .globl _memset - .globl __memset - .leafproc _memset, __memset - .align 2 -_memset: -#ifndef __PIC - lda Lrett,g14 -#else - lda Lrett-(.+8)(ip),g14 -#endif -__memset: - cmpo 7,g2 # are there fewer than seven characters to move? - lda (g14),g13 # save return address - notand g0,7,g3 # test for non-aligned dest_ptr - lda 0,g14 # conform to register conventions - shlo 24,g1,g4 # prepare word of char - lda (g0),g6 # preserve dest_ptr for return - shro 8,g4,g5 - bge.f Lcloop_setup - cmpo g3,g0 # is dest longword aligned - lda 7(g3),g3 # bump dest_ptr to next longword boundary - or g4,g5,g4 - be.t Lwloop_setup - -Lbgn_cloop: - cmpo g6,g3 # Have we reached longword boundary? - stob g1,(g6) # store one byte of char - subo 1,g2,g2 # decrement len - lda 1(g6),g6 # increment dest_ptr - bne.t Lbgn_cloop # loop if more bytes to store before longword - - cmpobge.f 7,g2,Lcloop - -Lwloop_setup: - shro 16,g4,g5 - or g4,g5,g4 - mov g4,g5 # now have a longword of char - -Lwloop: - cmpo 15,g2 # Do we have to store more longwords? - stl g4,(g6) # Store longword of char - subo 8,g2,g2 # Decrement len - lda 8(g6),g6 # Increment dest_ptr - bl.t Lwloop # loop if more longwords to store - -Lcloop_setup: - cmpobge.t 0,g2,Lexit - -Lcloop: - cmpo 1,g2 # Is len exhausted? - stob g1,(g6) # Store byte - subo 1,g2,g2 # Decrement len - lda 1(g6),g6 # Increment dest_ptr - bne.t Lcloop # loop if more bytes to store - -Lexit: - bx (g13) -Lrett: - ret - -/* end of memset */ |