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/* Copyright (C) 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 "config.h"
#include "libitm_i.h"
#include "dispatch.h"
extern "C" {
#ifndef HAVE_AS_AVX
// If we don't have an AVX capable assembler, we didn't set -mavx on the
// command-line either, which means that libitm.h defined neither this type
// nor the functions in this file. Define the type and unconditionally
// wrap the file in extern "C" to make up for the lack of pre-declaration.
typedef float _ITM_TYPE_M256 __attribute__((vector_size(32), may_alias));
#endif
// Re-define the memcpy implementations so that we can frob the
// interface to deal with possibly missing AVX instruction set support.
#ifdef HAVE_AS_AVX
#define RETURN(X) return X
#define STORE(X,Y) X = Y
#define OUTPUT(T) _ITM_TYPE_##T
#define INPUT(T,X) , _ITM_TYPE_##T X
#else
/* Emit vmovaps (%rax),%ymm0. */
#define RETURN(X) \
asm volatile(".byte 0xc5,0xfc,0x28,0x00" : "=m"(X) : "a"(&X))
/* Emit vmovaps %ymm0,(%rax); vzeroupper. */
#define STORE(X,Y) \
asm volatile(".byte 0xc5,0xfc,0x29,0x00,0xc5,0xf8,0x77" : "=m"(X) : "a"(&X))
#define OUTPUT(T) void
#define INPUT(T,X)
#endif
#undef ITM_READ_MEMCPY
#define ITM_READ_MEMCPY(T, LSMOD, TARGET, M2) \
OUTPUT(T) ITM_REGPARM _ITM_##LSMOD##T (const _ITM_TYPE_##T *ptr) \
{ \
_ITM_TYPE_##T v; \
TARGET memtransfer##M2(&v, ptr, sizeof(_ITM_TYPE_##T), false, \
GTM::abi_dispatch::NONTXNAL, \
GTM::abi_dispatch::LSMOD); \
RETURN(v); \
}
#undef ITM_WRITE_MEMCPY
#define ITM_WRITE_MEMCPY(T, LSMOD, TARGET, M2) \
void ITM_REGPARM _ITM_##LSMOD##T (_ITM_TYPE_##T *ptr INPUT(T,in)) \
{ \
_ITM_TYPE_##T v; \
STORE(v, in); \
TARGET memtransfer##M2(ptr, &v, sizeof(_ITM_TYPE_##T), false, \
GTM::abi_dispatch::LSMOD, \
GTM::abi_dispatch::NONTXNAL); \
}
// ??? Use memcpy for now, until we have figured out how to best instantiate
// these loads/stores.
CREATE_DISPATCH_FUNCTIONS_T_MEMCPY(M256, GTM::abi_disp()->, )
void ITM_REGPARM
_ITM_LM256 (const _ITM_TYPE_M256 *ptr)
{
GTM::GTM_LB (ptr, sizeof (*ptr));
}
} // extern "C"
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