android / platform / bootable / recovery / c870a99c4aeb9e232ee68951e666b5fa670d1680 / . / applypatch / utils.c

/* | |

* Copyright (C) 2009 The Android Open Source Project | |

* | |

* 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. | |

*/ | |

#include <stdio.h> | |

#include "utils.h" | |

/** Write a 4-byte value to f in little-endian order. */ | |

void Write4(int value, FILE* f) { | |

fputc(value & 0xff, f); | |

fputc((value >> 8) & 0xff, f); | |

fputc((value >> 16) & 0xff, f); | |

fputc((value >> 24) & 0xff, f); | |

} | |

/** Write an 8-byte value to f in little-endian order. */ | |

void Write8(long long value, FILE* f) { | |

fputc(value & 0xff, f); | |

fputc((value >> 8) & 0xff, f); | |

fputc((value >> 16) & 0xff, f); | |

fputc((value >> 24) & 0xff, f); | |

fputc((value >> 32) & 0xff, f); | |

fputc((value >> 40) & 0xff, f); | |

fputc((value >> 48) & 0xff, f); | |

fputc((value >> 56) & 0xff, f); | |

} | |

int Read2(void* pv) { | |

unsigned char* p = pv; | |

return (int)(((unsigned int)p[1] << 8) | | |

(unsigned int)p[0]); | |

} | |

int Read4(void* pv) { | |

unsigned char* p = pv; | |

return (int)(((unsigned int)p[3] << 24) | | |

((unsigned int)p[2] << 16) | | |

((unsigned int)p[1] << 8) | | |

(unsigned int)p[0]); | |

} | |

long long Read8(void* pv) { | |

unsigned char* p = pv; | |

return (long long)(((unsigned long long)p[7] << 56) | | |

((unsigned long long)p[6] << 48) | | |

((unsigned long long)p[5] << 40) | | |

((unsigned long long)p[4] << 32) | | |

((unsigned long long)p[3] << 24) | | |

((unsigned long long)p[2] << 16) | | |

((unsigned long long)p[1] << 8) | | |

(unsigned long long)p[0]); | |

} |