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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_RUNTIME_JDWP_JDWP_BITS_H_
     18 #define ART_RUNTIME_JDWP_JDWP_BITS_H_
     19 
     20 #include <stddef.h>
     21 #include <stdint.h>
     22 #include <stdlib.h>
     23 #include <string.h>
     24 #include <string>
     25 #include <vector>
     26 
     27 namespace art {
     28 
     29 namespace JDWP {
     30 
     31 static inline uint32_t Get4BE(unsigned char const* pSrc) {
     32   return (pSrc[0] << 24) | (pSrc[1] << 16) | (pSrc[2] << 8) | pSrc[3];
     33 }
     34 
     35 static inline void Append1BE(std::vector<uint8_t>& bytes, uint8_t value) {
     36   bytes.push_back(value);
     37 }
     38 
     39 static inline void Append2BE(std::vector<uint8_t>& bytes, uint16_t value) {
     40   bytes.push_back(static_cast<uint8_t>(value >> 8));
     41   bytes.push_back(static_cast<uint8_t>(value));
     42 }
     43 
     44 static inline void Append4BE(std::vector<uint8_t>& bytes, uint32_t value) {
     45   bytes.push_back(static_cast<uint8_t>(value >> 24));
     46   bytes.push_back(static_cast<uint8_t>(value >> 16));
     47   bytes.push_back(static_cast<uint8_t>(value >> 8));
     48   bytes.push_back(static_cast<uint8_t>(value));
     49 }
     50 
     51 static inline void Append8BE(std::vector<uint8_t>& bytes, uint64_t value) {
     52   bytes.push_back(static_cast<uint8_t>(value >> 56));
     53   bytes.push_back(static_cast<uint8_t>(value >> 48));
     54   bytes.push_back(static_cast<uint8_t>(value >> 40));
     55   bytes.push_back(static_cast<uint8_t>(value >> 32));
     56   bytes.push_back(static_cast<uint8_t>(value >> 24));
     57   bytes.push_back(static_cast<uint8_t>(value >> 16));
     58   bytes.push_back(static_cast<uint8_t>(value >> 8));
     59   bytes.push_back(static_cast<uint8_t>(value));
     60 }
     61 
     62 static inline void AppendUtf16BE(std::vector<uint8_t>& bytes, const uint16_t* chars,
     63                                  size_t char_count) {
     64   Append4BE(bytes, char_count);
     65   for (size_t i = 0; i < char_count; ++i) {
     66     Append2BE(bytes, chars[i]);
     67   }
     68 }
     69 
     70 static inline void AppendUtf16CompressedBE(std::vector<uint8_t>& bytes,
     71                                            const uint8_t* chars, size_t char_count) {
     72   Append4BE(bytes, char_count);
     73   for (size_t i = 0; i < char_count; ++i) {
     74     Append2BE(bytes, static_cast<uint16_t>(chars[i]));
     75   }
     76 }
     77 
     78 // @deprecated
     79 static inline void Set1(uint8_t* buf, uint8_t val) {
     80   *buf = val;
     81 }
     82 
     83 // @deprecated
     84 static inline void Set2BE(uint8_t* buf, uint16_t val) {
     85   *buf++ = (uint8_t)(val >> 8);
     86   *buf = (uint8_t)(val);
     87 }
     88 
     89 // @deprecated
     90 static inline void Set4BE(uint8_t* buf, uint32_t val) {
     91   *buf++ = (uint8_t)(val >> 24);
     92   *buf++ = (uint8_t)(val >> 16);
     93   *buf++ = (uint8_t)(val >> 8);
     94   *buf = (uint8_t)(val);
     95 }
     96 
     97 // @deprecated
     98 static inline void Set8BE(uint8_t* buf, uint64_t val) {
     99   *buf++ = (uint8_t)(val >> 56);
    100   *buf++ = (uint8_t)(val >> 48);
    101   *buf++ = (uint8_t)(val >> 40);
    102   *buf++ = (uint8_t)(val >> 32);
    103   *buf++ = (uint8_t)(val >> 24);
    104   *buf++ = (uint8_t)(val >> 16);
    105   *buf++ = (uint8_t)(val >> 8);
    106   *buf = (uint8_t)(val);
    107 }
    108 
    109 static inline void Write1BE(uint8_t** dst, uint8_t value) {
    110   Set1(*dst, value);
    111   *dst += sizeof(value);
    112 }
    113 
    114 static inline void Write2BE(uint8_t** dst, uint16_t value) {
    115   Set2BE(*dst, value);
    116   *dst += sizeof(value);
    117 }
    118 
    119 static inline void Write4BE(uint8_t** dst, uint32_t value) {
    120   Set4BE(*dst, value);
    121   *dst += sizeof(value);
    122 }
    123 
    124 static inline void Write8BE(uint8_t** dst, uint64_t value) {
    125   Set8BE(*dst, value);
    126   *dst += sizeof(value);
    127 }
    128 
    129 }  // namespace JDWP
    130 
    131 }  // namespace art
    132 
    133 #endif  // ART_RUNTIME_JDWP_JDWP_BITS_H_
    134