| /* Set a block of memory to some byte value. For SUN4V Niagara-4. |
| Copyright (C) 2012-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by David S. Miller (davem@davemloft.net) |
| |
| 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> |
| |
| #define ASI_BLK_INIT_QUAD_LDD_P 0xe2 |
| |
| #if !defined NOT_IN_libc |
| |
| .register %g2, #scratch |
| .register %g3, #scratch |
| |
| .text |
| .align 32 |
| |
| ENTRY(__memset_niagara4) |
| andcc %o1, 0xff, %o4 |
| be,pt %icc, 1f |
| mov %o2, %o1 |
| sllx %o4, 8, %g1 |
| or %g1, %o4, %o2 |
| sllx %o2, 16, %g1 |
| or %g1, %o2, %o2 |
| sllx %o2, 32, %g1 |
| ba,pt %icc, 1f |
| or %g1, %o2, %o4 |
| END(__memset_niagara4) |
| |
| .align 32 |
| ENTRY(__bzero_niagara4) |
| clr %o4 |
| 1: cmp %o1, 16 |
| ble %icc, .Ltiny |
| mov %o0, %o3 |
| sub %g0, %o0, %g1 |
| and %g1, 0x7, %g1 |
| brz,pt %g1, .Laligned8 |
| sub %o1, %g1, %o1 |
| 1: stb %o4, [%o0 + 0x00] |
| subcc %g1, 1, %g1 |
| bne,pt %icc, 1b |
| add %o0, 1, %o0 |
| .Laligned8: |
| cmp %o1, 64 + (64 - 8) |
| ble .Lmedium |
| sub %g0, %o0, %g1 |
| andcc %g1, (64 - 1), %g1 |
| brz,pn %g1, .Laligned64 |
| sub %o1, %g1, %o1 |
| 1: stx %o4, [%o0 + 0x00] |
| subcc %g1, 8, %g1 |
| bne,pt %icc, 1b |
| add %o0, 0x8, %o0 |
| .Laligned64: |
| andn %o1, 64 - 1, %g1 |
| sub %o1, %g1, %o1 |
| brnz,pn %o4, .Lnon_bzero_loop |
| mov 0x20, %g2 |
| 1: stxa %o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P |
| subcc %g1, 0x40, %g1 |
| stxa %o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P |
| bne,pt %icc, 1b |
| add %o0, 0x40, %o0 |
| .Lpostloop: |
| cmp %o1, 8 |
| bl,pn %icc, .Ltiny |
| membar #StoreStore|#StoreLoad |
| .Lmedium: |
| andn %o1, 0x7, %g1 |
| sub %o1, %g1, %o1 |
| 1: stx %o4, [%o0 + 0x00] |
| subcc %g1, 0x8, %g1 |
| bne,pt %icc, 1b |
| add %o0, 0x08, %o0 |
| andcc %o1, 0x4, %g1 |
| be,pt %icc, .Ltiny |
| sub %o1, %g1, %o1 |
| stw %o4, [%o0 + 0x00] |
| add %o0, 0x4, %o0 |
| .Ltiny: |
| cmp %o1, 0 |
| be,pn %icc, .Lexit |
| 1: subcc %o1, 1, %o1 |
| stb %o4, [%o0 + 0x00] |
| bne,pt %icc, 1b |
| add %o0, 1, %o0 |
| .Lexit: |
| retl |
| mov %o3, %o0 |
| .Lnon_bzero_loop: |
| mov 0x08, %g3 |
| mov 0x28, %o5 |
| 1: stxa %o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P |
| subcc %g1, 0x40, %g1 |
| stxa %o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P |
| stxa %o4, [%o0 + %g3] ASI_BLK_INIT_QUAD_LDD_P |
| stxa %o4, [%o0 + %o5] ASI_BLK_INIT_QUAD_LDD_P |
| add %o0, 0x10, %o0 |
| stxa %o4, [%o0 + %g0] ASI_BLK_INIT_QUAD_LDD_P |
| stxa %o4, [%o0 + %g2] ASI_BLK_INIT_QUAD_LDD_P |
| stxa %o4, [%o0 + %g3] ASI_BLK_INIT_QUAD_LDD_P |
| stxa %o4, [%o0 + %o5] ASI_BLK_INIT_QUAD_LDD_P |
| bne,pt %icc, 1b |
| add %o0, 0x30, %o0 |
| ba,a,pt %icc, .Lpostloop |
| END(__bzero_niagara4) |
| |
| #endif |
