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/* CPU specific memcpy implementations. 64 bit S/390 version.
Copyright (C) 2012-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "sysdep.h"
#include "asm-syntax.h"
/* INPUT PARAMETERS
%r2 = target operands address
%r3 = source operands address
%r4 = number of bytes to copy. */
.text
#if defined SHARED && !defined NOT_IN_libc
ENTRY(memcpy_z196)
.machine "z196"
ltgr %r4,%r4
je .L_Z196_4
aghi %r4,-1
lgr %r1,%r2
srlg %r5,%r4,8
ltgr %r5,%r5
jne .L_Z196_5
.L_Z196_3:
exrl %r4,.L_Z196_14
.L_Z196_4:
br %r14
.L_Z196_5:
cgfi %r5,262144 # Switch to mvcle for copies >64MB
jh memcpy_mvcle
.L_Z196_2:
pfd 1,768(%r3)
pfd 2,768(%r1)
mvc 0(256,%r1),0(%r3)
aghi %r5,-1
la %r1,256(%r1)
la %r3,256(%r3)
jne .L_Z196_2
j .L_Z196_3
.L_Z196_14:
mvc 0(1,%r1),0(%r3)
END(memcpy_z196)
ENTRY(memcpy_z10)
.machine "z10"
cgije %r4,0,.L_Z10_4
aghi %r4,-1
lgr %r1,%r2
srlg %r5,%r4,8
cgijlh %r5,0,.L_Z10_13
.L_Z10_3:
exrl %r4,.L_Z10_15
.L_Z10_4:
br %r14
.L_Z10_13:
cgfi %r5,65535 # Switch to mvcle for copies >16MB
jh memcpy_mvcle
.L_Z10_12:
pfd 1,768(%r3)
pfd 2,768(%r1)
mvc 0(256,%r1),0(%r3)
la %r1,256(%r1)
la %r3,256(%r3)
brctg %r5,.L_Z10_12
j .L_Z10_3
.L_Z10_15:
mvc 0(1,%r1),0(%r3)
END(memcpy_z10)
#endif
#include "../memcpy.S"
#if !defined SHARED || defined NOT_IN_libc
.globl memcpy
.set memcpy,memcpy_z900
#endif
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