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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"