diff options
Diffstat (limited to 'sysdeps/s390/s390-32/multiarch/memcpy-s390.S')
| -rw-r--r-- | sysdeps/s390/s390-32/multiarch/memcpy-s390.S | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/multiarch/memcpy-s390.S b/sysdeps/s390/s390-32/multiarch/memcpy-s390.S new file mode 100644 index 0000000000..4e30cdf6c6 --- /dev/null +++ b/sysdeps/s390/s390-32/multiarch/memcpy-s390.S @@ -0,0 +1,98 @@ +/* CPU specific memcpy implementations. 32 bit S/390 version. + Copyright (C) 2012-2016 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 && IS_IN (libc) + +ENTRY(__memcpy_z196) + .machine "z196" + .machinemode "zarch_nohighgprs" + llgfr %r4,%r4 + ltgr %r4,%r4 + je .L_Z196_4 + aghi %r4,-1 + lr %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" + .machinemode "zarch_nohighgprs" + llgfr %r4,%r4 + cgije %r4,0,.L_Z10_4 + aghi %r4,-1 + lr %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 /* SHARED && IS_IN (libc) */ + +#include "../memcpy.S" + +#if !defined SHARED || !IS_IN (libc) +.globl memcpy +.set memcpy,__memcpy_default +#endif |