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-rw-r--r--libitm/memset.cc78
1 files changed, 0 insertions, 78 deletions
diff --git a/libitm/memset.cc b/libitm/memset.cc
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--- a/libitm/memset.cc
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-/* Copyright (C) 2008, 2009, 2011 Free Software Foundation, Inc.
- Contributed by Richard Henderson <rth@redhat.com>.
-
- This file is part of the GNU Transactional Memory Library (libitm).
-
- Libitm 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 of the License, or
- (at your option) any later version.
-
- Libitm 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 "libitm_i.h"
-
-using namespace GTM;
-
-static void
-do_memset(uintptr_t idst, int c, size_t size, abi_dispatch::lock_type W)
-{
- abi_dispatch *disp = abi_disp();
- uintptr_t dofs = idst & (CACHELINE_SIZE - 1);
- abi_dispatch::mask_pair dpair;
- gtm_cacheline *dst
- = reinterpret_cast<gtm_cacheline *>(idst & -CACHELINE_SIZE);
-
- if (size == 0)
- return;
-
- if (dofs != 0)
- {
- size_t dleft = CACHELINE_SIZE - dofs;
- size_t min = (size <= dleft ? size : dleft);
-
- dpair = disp->write_lock(dst, W);
- *dpair.mask |= (((gtm_cacheline_mask)1 << min) - 1) << dofs;
- memset (&dpair.line->b[dofs], c, min);
- dst++;
- size -= min;
- }
-
- while (size >= CACHELINE_SIZE)
- {
- dpair = disp->write_lock(dst, W);
- *dpair.mask = -1;
- memset (dpair.line, c, CACHELINE_SIZE);
- dst++;
- size -= CACHELINE_SIZE;
- }
-
- if (size != 0)
- {
- dpair = disp->write_lock(dst, W);
- *dpair.mask |= ((gtm_cacheline_mask)1 << size) - 1;
- memset (dpair.line, c, size);
- }
-}
-
-#define ITM_MEM_DEF(WRITE) \
-void ITM_REGPARM _ITM_memset##WRITE(void *dst, int c, size_t size) \
-{ \
- do_memset ((uintptr_t)dst, c, size, abi_dispatch::WRITE); \
-}
-
-ITM_MEM_DEF(W)
-ITM_MEM_DEF(WaR)
-ITM_MEM_DEF(WaW)