105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
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* Copyright 2015-16 Hillcrest Laboratories, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License and
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* any applicable agreements you may have with Hillcrest Laboratories, Inc.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Simple Utility functions common to several SH2 files.
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*/
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#include "sh2_util.h"
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uint8_t readu8(const uint8_t *p)
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{
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uint8_t retval = p[0];
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return retval;
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}
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void writeu8(uint8_t * p, uint8_t value)
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{
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*p = (uint8_t)(value & 0xFF);
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}
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uint16_t readu16(const uint8_t *p)
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{
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uint16_t retval = p[0] | (p[1] << 8);
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return retval;
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}
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void writeu16(uint8_t * p, uint16_t value)
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{
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p = (uint8_t)(value & 0xFF);
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}
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uint32_t readu32(const uint8_t *p)
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{
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uint32_t retval = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
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return retval;
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}
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void writeu32(uint8_t * p, uint32_t value)
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{
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p = (uint8_t)(value & 0xFF);
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}
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int8_t read8(const uint8_t *p)
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{
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int8_t retval = p[0];
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return retval;
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}
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void write8(uint8_t * p, int8_t value)
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{
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*p = (uint8_t)(value & 0xFF);
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}
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int16_t read16(const uint8_t *p)
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{
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int16_t retval = p[0] | (p[1] << 8);
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return retval;
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}
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void write16(uint8_t * p, int16_t value)
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{
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p = (uint8_t)(value & 0xFF);
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}
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int32_t read32(const uint8_t *p)
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{
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int32_t retval = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
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return retval;
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}
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void write32(uint8_t * p, int32_t value)
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{
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p++ = (uint8_t)(value & 0xFF);
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value >>= 8;
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*p = (uint8_t)(value & 0xFF);
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}
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