diff options
Diffstat (limited to 'gcc-4.9/libitm/config/x86/x86_avx.cc')
| -rw-r--r-- | gcc-4.9/libitm/config/x86/x86_avx.cc | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/gcc-4.9/libitm/config/x86/x86_avx.cc b/gcc-4.9/libitm/config/x86/x86_avx.cc new file mode 100644 index 000000000..a85a3de83 --- /dev/null +++ b/gcc-4.9/libitm/config/x86/x86_avx.cc @@ -0,0 +1,91 @@ +/* Copyright (C) 2009-2014 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" |