| /* CPU specific memcpy implementations. 32 bit S/390 version. |
| Copyright (C) 2012-2018 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(____mempcpy_z196) |
| .machine "z196" |
| .machinemode "zarch_nohighgprs" |
| lr %r1,%r2 # Use as dest |
| la %r2,0(%r4,%r2) # Return dest + n |
| j .L_Z196_start |
| END(____mempcpy_z196) |
| |
| ENTRY(__memcpy_z196) |
| .machine "z196" |
| .machinemode "zarch_nohighgprs" |
| lr %r1,%r2 # r1: Use as dest ; r2: Return dest |
| .L_Z196_start: |
| llgfr %r4,%r4 |
| ltgr %r4,%r4 |
| je .L_Z196_4 |
| aghi %r4,-1 |
| 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(____mempcpy_z10) |
| .machine "z10" |
| .machinemode "zarch_nohighgprs" |
| lr %r1,%r2 # Use as dest |
| la %r2,0(%r4,%r2) # Return dest + n |
| j .L_Z10_start |
| END(____mempcpy_z10) |
| |
| ENTRY(__memcpy_z10) |
| .machine "z10" |
| .machinemode "zarch_nohighgprs" |
| lr %r1,%r2 # r1: Use as dest ; r2: Return dest |
| .L_Z10_start: |
| llgfr %r4,%r4 |
| cgije %r4,0,.L_Z10_4 |
| aghi %r4,-1 |
| 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) |
| |
| # define __mempcpy ____mempcpy_default |
| #endif /* SHARED && IS_IN (libc) */ |
| |
| #define memcpy __memcpy_default |
| #include "../memcpy.S" |
| #undef memcpy |
| |
| #if defined SHARED && IS_IN (libc) |
| .globl __GI_memcpy |
| .set __GI_memcpy,__memcpy_default |
| .globl __GI_mempcpy |
| .set __GI_mempcpy,____mempcpy_default |
| .globl __GI___mempcpy |
| .set __GI___mempcpy,____mempcpy_default |
| #else |
| .globl memcpy |
| .set memcpy,__memcpy_default |
| .weak mempcpy |
| .set mempcpy,__mempcpy |
| #endif |
