/* * * honggfuzz - utilities * ----------------------------------------- * * Author: Robert Swiecki * * Copyright 2010-2018 by 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. * */ #ifndef _HF_COMMON_UTIL_H_ #define _HF_COMMON_UTIL_H_ #include #include #ifdef __clang__ #include #endif #include #include #include /* * Go-style defer scoped implementation * * If compiled with clang, use: -fblocks -lBlocksRuntime * * Example of use: * * { * int fd = open(fname, O_RDONLY); * if (fd == -1) { * error(....); * return; * } * defer { close(fd); }; * ssize_t sz = read(fd, buf, sizeof(buf)); * ... * ... * } * */ #define __STRMERGE(a, b) a##b #define _STRMERGE(a, b) __STRMERGE(a, b) #ifdef __clang__ #if __has_extension(blocks) static void __attribute__((unused)) __clang_cleanup_func(void (^*dfunc)(void)) { (*dfunc)(); } #define defer \ void (^_STRMERGE(__defer_f_, __COUNTER__))(void) \ __attribute__((cleanup(__clang_cleanup_func))) __attribute__((unused)) = ^ #else /* __has_extension(blocks) */ #define defer UNIMPLEMENTED - NO - SUPPORT - FOR - BLOCKS - IN - YOUR - CLANG - ENABLED #endif /* __has_extension(blocks) */ #else /* !__clang__, e.g.: gcc */ #define __block #define _DEFER(a, count) \ auto void _STRMERGE(__defer_f_, count)(void* _defer_arg __attribute__((unused))); \ int _STRMERGE(__defer_var_, count) __attribute__((cleanup(_STRMERGE(__defer_f_, count)))) \ __attribute__((unused)); \ void _STRMERGE(__defer_f_, count)(void* _defer_arg __attribute__((unused))) #define defer _DEFER(a, __COUNTER__) #endif /* ifdef __clang__ */ /* Block scoped mutexes */ #define MX_SCOPED_LOCK(m) \ MX_LOCK(m); \ defer { \ MX_UNLOCK(m); \ } #define MX_SCOPED_RWLOCK_READ(m) \ MX_RWLOCK_READ(m); \ defer { \ MX_RWLOCK_UNLOCK(m); \ } #define MX_SCOPED_RWLOCK_WRITE(m) \ MX_RWLOCK_WRITE(m); \ defer { \ MX_RWLOCK_UNLOCK(m); \ } #define HF_STR_LEN 8192 #define HF_STR_LEN_MINUS_1 8191 #define MX_LOCK(m) util_mutexLock(m, __func__, __LINE__) #define MX_UNLOCK(m) util_mutexUnlock(m, __func__, __LINE__) #define MX_RWLOCK_READ(m) util_mutexRWLockRead(m, __func__, __LINE__) #define MX_RWLOCK_WRITE(m) util_mutexRWLockWrite(m, __func__, __LINE__) #define MX_RWLOCK_UNLOCK(m) util_mutexRWUnlock(m, __func__, __LINE__) /* Atomics */ #define ATOMIC_GET(x) __atomic_load_n(&(x), __ATOMIC_RELAXED) #define ATOMIC_SET(x, y) __atomic_store_n(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_CLEAR(x) __atomic_store_n(&(x), 0, __ATOMIC_RELAXED) #define ATOMIC_XCHG(x, y) __atomic_exchange_n(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_PRE_INC(x) __atomic_add_fetch(&(x), 1, __ATOMIC_RELAXED) #define ATOMIC_POST_INC(x) __atomic_fetch_add(&(x), 1, __ATOMIC_RELAXED) #define ATOMIC_PRE_DEC(x) __atomic_sub_fetch(&(x), 1, __ATOMIC_RELAXED) #define ATOMIC_POST_DEC(x) __atomic_fetch_sub(&(x), 1, __ATOMIC_RELAXED) #define ATOMIC_PRE_ADD(x, y) __atomic_add_fetch(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_POST_ADD(x, y) __atomic_fetch_add(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_PRE_SUB(x, y) __atomic_sub_fetch(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_POST_SUB(x, y) __atomic_fetch_sub(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_PRE_AND(x, y) __atomic_and_fetch(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_POST_AND(x, y) __atomic_fetch_and(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_PRE_OR(x, y) __atomic_or_fetch(&(x), y, __ATOMIC_RELAXED) #define ATOMIC_POST_OR(x, y) __atomic_fetch_or(&(x), y, __ATOMIC_RELAXED) __attribute__((always_inline)) static inline bool ATOMIC_BITMAP_SET(uint8_t* addr, size_t offset) { addr += (offset / 8); uint8_t mask = (1U << (offset % 8)); if (ATOMIC_GET(*addr) & mask) { return true; } #if defined(__x86_64__) || defined(__i386__) bool old; __asm__ __volatile__("lock bts %2, %0\n\t" "sbb %1, %1\n\t" : "+m"(*addr), "=r"(old) : "Ir"(offset % 8)); return old; #else /* defined(__x86_64__) || defined(__i386__) */ return (ATOMIC_POST_OR(*addr, mask) & mask); #endif /* defined(__x86_64__) || defined(__i386__) */ } #define HF_MAX(x, y) ((x > y) ? x : y) #define HF_MIN(x, y) ((x < y) ? x : y) #define HF_CAP(v, x, y) HF_MAX(x, HF_MIN(y, v)) #define util_Log2(v) ((sizeof(unsigned int) * 8) - __builtin_clz((unsigned int)v) - 1) typedef enum { LHFC_ADDR_NOTFOUND = 0, LHFC_ADDR_RO = 1, LHFC_ADDR_RW = 2, } lhfc_addr_t; extern void util_ParentDeathSigIfAvail(int signo); extern bool util_PinThreadToCPUs(uint32_t startcpu, uint32_t cpucnt); extern void* util_Malloc(size_t sz); extern void* util_Calloc(size_t sz); extern void* util_AllocCopy(const uint8_t* ptr, size_t sz); extern void* util_MMap(size_t sz); extern void* util_Realloc(void* ptr, size_t sz); extern uint64_t util_rndGet(uint64_t min, uint64_t max); extern void util_rndBuf(uint8_t* buf, size_t sz); extern void util_rndBufPrintable(uint8_t* buf, size_t sz); extern uint64_t util_rnd64(void); extern uint8_t util_rndPrintable(void); extern char* util_StrDup(const char* s); extern int util_ssnprintf(char* str, size_t size, const char* format, ...) __attribute__((format(printf, 3, 4))); extern int util_vssnprintf(char* str, size_t size, const char* format, va_list ap); extern bool util_strStartsWith(const char* str, const char* tofind); extern bool util_isANumber(const char* s); extern size_t util_decodeCString(char* s); extern void util_getLocalTime(const char* fmt, char* buf, size_t len, time_t tm); extern const char* util_sigName(int signo); extern void util_turnToPrintable(uint8_t* buf, size_t sz); extern void util_closeStdio(bool close_stdin, bool close_stdout, bool close_stderr); extern lhfc_addr_t util_getProgAddr(const void* addr); extern bool util_32bitValInBinary(uint32_t v); extern bool util_64bitValInBinary(uint64_t v); extern uint64_t util_hash(const char* buf, size_t len); extern int64_t fastArray64Search(uint64_t* array, size_t arraySz, uint64_t key); extern int64_t util_timeNowUSecs(void); extern void util_sleepForMSec(uint64_t msec); extern uint64_t util_getUINT32(const uint8_t* buf); extern uint64_t util_getUINT64(const uint8_t* buf); extern void util_mutexLock(pthread_mutex_t* mutex, const char* func, int line); extern void util_mutexUnlock(pthread_mutex_t* mutex, const char* func, int line); extern void util_mutexRWLockRead(pthread_rwlock_t* mutex, const char* func, int line); extern void util_mutexRWLockWrite(pthread_rwlock_t* mutex, const char* func, int line); extern void util_mutexRWUnlock(pthread_rwlock_t* mutex, const char* func, int line); extern uint64_t util_CRC64(const uint8_t* buf, size_t len); extern uint64_t util_CRC64Rev(const uint8_t* buf, size_t len); #endif /* ifndef _HF_COMMON_UTIL_H_ */