| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you 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. |
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| *****************************************************************************/ |
| |
| /* --------------------------------------------------------------------------------------- |
| @file tlm_helpers.h |
| |
| @brief |
| |
| Original Authors: |
| Charles Wilson, ESLX |
| |
| --------------------------------------------------------------------------------------- */ |
| |
| #ifndef __TLM_HELPERS_H__ |
| #define __TLM_HELPERS_H__ |
| |
| //#include <sys/param.h> |
| //#include <cstring> |
| |
| namespace tlm { |
| |
| enum tlm_endianness { TLM_UNKNOWN_ENDIAN, TLM_LITTLE_ENDIAN, TLM_BIG_ENDIAN }; |
| |
| inline tlm_endianness get_host_endianness(void) |
| { |
| static tlm_endianness host_endianness = TLM_UNKNOWN_ENDIAN; |
| |
| if (host_endianness == TLM_UNKNOWN_ENDIAN) { |
| unsigned int number = 1; |
| unsigned char *p_msb_or_lsb = (unsigned char*)&number; |
| |
| host_endianness = (p_msb_or_lsb[0] == 0) ? TLM_BIG_ENDIAN : TLM_LITTLE_ENDIAN; |
| } |
| return host_endianness; |
| } |
| |
| inline bool host_has_little_endianness(void) |
| { |
| static tlm_endianness host_endianness = TLM_UNKNOWN_ENDIAN; |
| static bool host_little_endian = false; |
| |
| if (host_endianness == TLM_UNKNOWN_ENDIAN) { |
| unsigned int number = 1; |
| unsigned char *p_msb_or_lsb = (unsigned char*)&number; |
| |
| host_little_endian = (p_msb_or_lsb[0] == 0) ? false : true; |
| } |
| |
| return host_little_endian; |
| } |
| |
| inline bool has_host_endianness(tlm_endianness endianness) |
| { |
| if (host_has_little_endianness()) { |
| return endianness == TLM_LITTLE_ENDIAN; |
| |
| } else { |
| return endianness == TLM_BIG_ENDIAN; |
| } |
| } |
| |
| } // namespace tlm |
| |
| #endif /* __TLM_HELPERS_H__ */ |