diff options
Diffstat (limited to 'libgcc/config/spu/mfc_tag_reserve.c')
-rw-r--r-- | libgcc/config/spu/mfc_tag_reserve.c | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/libgcc/config/spu/mfc_tag_reserve.c b/libgcc/config/spu/mfc_tag_reserve.c deleted file mode 100644 index e2e09da..0000000 --- a/libgcc/config/spu/mfc_tag_reserve.c +++ /dev/null @@ -1,51 +0,0 @@ -/* Copyright (C) 2007-2019 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 3, or (at your option) any later -version. - -GCC 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 General Public License -for more details. - -Under Section 7 of GPL version 3, you are granted additional -permissions described in the GCC Runtime Library Exception, version -3.1, as published by the Free Software Foundation. - -You should have received a copy of the GNU General Public License and -a copy of the GCC Runtime Library Exception along with this program; -see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -<http://www.gnu.org/licenses/>. */ - -#include <spu_mfcio.h> -extern vector unsigned int __mfc_tag_table; - -/* Reserves a DMA tag for exclusive use. This routine returns an available - tag id in the range 0 to 31 and marks the tag as reserved. If no tags - are available, MFC_DMA_TAG_INVALID is returned indicating that all tags - are already reserved. */ - -unsigned int -__mfc_tag_reserve (void) -{ - vector unsigned int mask = (vector unsigned int) - { 0x80000000, 0x80000000, 0x80000000, 0x80000000 }; - vector unsigned int count_zeros, is_valid; - vector signed int count_neg; - - count_zeros = spu_cntlz (__mfc_tag_table); - count_neg = spu_sub (0, (vector signed int) count_zeros); - - mask = spu_rlmask (mask, (vector signed int) count_neg); - __mfc_tag_table = spu_andc (__mfc_tag_table, mask); - - is_valid = spu_cmpeq (count_zeros, 32); - count_zeros = spu_sel (count_zeros, is_valid, is_valid); - - return spu_extract (count_zeros, 0); -} - |