projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 08f43f9b | 1 | /* CPU specific memcpy implementations. 64 bit S/390 version. |
| b168057a | 2 | Copyright (C) 2012-2015 Free Software Foundation, Inc. |
| 08f43f9b AK |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | ||
| 20 | #include "sysdep.h" | |
| 21 | #include "asm-syntax.h" | |
| 22 | ||
| 23 | /* INPUT PARAMETERS | |
| 24 | %r2 = target operands address | |
| 25 | %r3 = source operands address | |
| 26 | %r4 = number of bytes to copy. */ | |
| 27 | ||
| 28 | .text | |
| 29 | ||
| 4f41c682 | 30 | #if defined SHARED && IS_IN (libc) |
| 08f43f9b AK |
31 | |
| 32 | ENTRY(memcpy_z196) | |
| 33 | .machine "z196" | |
| 34 | ltgr %r4,%r4 | |
| 35 | je .L_Z196_4 | |
| 36 | aghi %r4,-1 | |
| 37 | lgr %r1,%r2 | |
| 38 | srlg %r5,%r4,8 | |
| 39 | ltgr %r5,%r5 | |
| 40 | jne .L_Z196_5 | |
| 41 | .L_Z196_3: | |
| 42 | exrl %r4,.L_Z196_14 | |
| 43 | .L_Z196_4: | |
| 44 | br %r14 | |
| 45 | .L_Z196_5: | |
| 46 | cgfi %r5,262144 # Switch to mvcle for copies >64MB | |
| 47 | jh memcpy_mvcle | |
| 48 | .L_Z196_2: | |
| 49 | pfd 1,768(%r3) | |
| 50 | pfd 2,768(%r1) | |
| 51 | mvc 0(256,%r1),0(%r3) | |
| 52 | aghi %r5,-1 | |
| 53 | la %r1,256(%r1) | |
| 54 | la %r3,256(%r3) | |
| 55 | jne .L_Z196_2 | |
| 56 | j .L_Z196_3 | |
| 57 | .L_Z196_14: | |
| 58 | mvc 0(1,%r1),0(%r3) | |
| 59 | END(memcpy_z196) | |
| 60 | ||
| 61 | ENTRY(memcpy_z10) | |
| 62 | .machine "z10" | |
| 63 | cgije %r4,0,.L_Z10_4 | |
| 64 | aghi %r4,-1 | |
| 65 | lgr %r1,%r2 | |
| 66 | srlg %r5,%r4,8 | |
| 67 | cgijlh %r5,0,.L_Z10_13 | |
| 68 | .L_Z10_3: | |
| 69 | exrl %r4,.L_Z10_15 | |
| 70 | .L_Z10_4: | |
| 71 | br %r14 | |
| 72 | .L_Z10_13: | |
| 73 | cgfi %r5,65535 # Switch to mvcle for copies >16MB | |
| 74 | jh memcpy_mvcle | |
| 75 | .L_Z10_12: | |
| 76 | pfd 1,768(%r3) | |
| 77 | pfd 2,768(%r1) | |
| 78 | mvc 0(256,%r1),0(%r3) | |
| 79 | la %r1,256(%r1) | |
| 80 | la %r3,256(%r3) | |
| 81 | brctg %r5,.L_Z10_12 | |
| 82 | j .L_Z10_3 | |
| 83 | .L_Z10_15: | |
| 84 | mvc 0(1,%r1),0(%r3) | |
| 85 | END(memcpy_z10) | |
| 86 | ||
| 87 | #endif | |
| 88 | ||
| 89 | #include "../memcpy.S" | |
| 90 | ||
| 4f41c682 | 91 | #if !defined SHARED || !IS_IN (libc) |
| 08f43f9b AK |
92 | .globl memcpy |
| 93 | .set memcpy,memcpy_z900 | |
| 94 | #endif |