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Diffstat (limited to 'application/basilisk/components/translation/cld2/internal/port.h')
-rw-r--r-- | application/basilisk/components/translation/cld2/internal/port.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/application/basilisk/components/translation/cld2/internal/port.h b/application/basilisk/components/translation/cld2/internal/port.h deleted file mode 100644 index 077e35a2f..000000000 --- a/application/basilisk/components/translation/cld2/internal/port.h +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// -// These are weird things we need to do to get this compiling on -// random systems [subset]. - -#ifndef BASE_PORT_H_ -#define BASE_PORT_H_ - -#include <string.h> // for memcpy() -#include "integral_types.h" - -namespace CLD2 { - -// Portable handling of unaligned loads, stores, and copies. -// On some platforms, like ARM, the copy functions can be more efficient -// then a load and a store. - -#if defined(ARCH_PIII) || defined(ARCH_ATHLON) || defined(ARCH_K8) || defined(_ARCH_PPC) - -// x86 and x86-64 can perform unaligned loads/stores directly; -// modern PowerPC hardware can also do unaligned integer loads and stores; -// but note: the FPU still sends unaligned loads and stores to a trap handler! - -#define UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p)) -#define UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p)) -#define UNALIGNED_LOAD64(_p) (*reinterpret_cast<const uint64 *>(_p)) - -#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val)) -#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val)) -#define UNALIGNED_STORE64(_p, _val) (*reinterpret_cast<uint64 *>(_p) = (_val)) - -#elif defined(__arm__) && \ - !defined(__ARM_ARCH_5__) && \ - !defined(__ARM_ARCH_5T__) && \ - !defined(__ARM_ARCH_5TE__) && \ - !defined(__ARM_ARCH_5TEJ__) && \ - !defined(__ARM_ARCH_6__) && \ - !defined(__ARM_ARCH_6J__) && \ - !defined(__ARM_ARCH_6K__) && \ - !defined(__ARM_ARCH_6Z__) && \ - !defined(__ARM_ARCH_6ZK__) && \ - !defined(__ARM_ARCH_6T2__) - -// ARMv7 and newer support native unaligned accesses, but only of 16-bit -// and 32-bit values (not 64-bit); older versions either raise a fatal signal, -// do an unaligned read and rotate the words around a bit, or do the reads very -// slowly (trip through kernel mode). There's no simple #define that says just -// “ARMv7 or higher”, so we have to filter away all ARMv5 and ARMv6 -// sub-architectures. Newer gcc (>= 4.6) set an __ARM_FEATURE_ALIGNED #define, -// so in time, maybe we can move on to that. -// -// This is a mess, but there's not much we can do about it. - -#define UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p)) -#define UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p)) - -#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val)) -#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val)) - -// TODO(sesse): NEON supports unaligned 64-bit loads and stores. -// See if that would be more efficient on platforms supporting it, -// at least for copies. - -inline uint64 UNALIGNED_LOAD64(const void *p) { - uint64 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline void UNALIGNED_STORE64(void *p, uint64 v) { - memcpy(p, &v, sizeof v); -} - -#else - -#define NEED_ALIGNED_LOADS - -// These functions are provided for architectures that don't support -// unaligned loads and stores. - -inline uint16 UNALIGNED_LOAD16(const void *p) { - uint16 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline uint32 UNALIGNED_LOAD32(const void *p) { - uint32 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline uint64 UNALIGNED_LOAD64(const void *p) { - uint64 t; - memcpy(&t, p, sizeof t); - return t; -} - -inline void UNALIGNED_STORE16(void *p, uint16 v) { - memcpy(p, &v, sizeof v); -} - -inline void UNALIGNED_STORE32(void *p, uint32 v) { - memcpy(p, &v, sizeof v); -} - -inline void UNALIGNED_STORE64(void *p, uint64 v) { - memcpy(p, &v, sizeof v); -} - -#endif - -} // End namespace CLD2 - -#endif // BASE_PORT_H_ |