diff options
Diffstat (limited to 'js/src/zydis/Zycore/API/Memory.c')
-rw-r--r-- | js/src/zydis/Zycore/API/Memory.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/js/src/zydis/Zycore/API/Memory.c b/js/src/zydis/Zycore/API/Memory.c new file mode 100644 index 0000000000..0ddfadb6f3 --- /dev/null +++ b/js/src/zydis/Zycore/API/Memory.c @@ -0,0 +1,132 @@ +/*************************************************************************************************** + + Zyan Core Library (Zycore-C) + + Original Author : Florian Bernd + + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + +***************************************************************************************************/ + +#include "zydis/Zycore/API/Memory.h" + +#ifndef ZYAN_NO_LIBC + +#if defined(ZYAN_WINDOWS) + +#elif defined(ZYAN_POSIX) +# include <unistd.h> +#else +# error "Unsupported platform detected" +#endif + +/* ============================================================================================== */ +/* Exported functions */ +/* ============================================================================================== */ + +/* ---------------------------------------------------------------------------------------------- */ +/* General */ +/* ---------------------------------------------------------------------------------------------- */ + +ZyanU32 ZyanMemoryGetSystemPageSize(void) +{ +#if defined(ZYAN_WINDOWS) + + SYSTEM_INFO system_info; + GetSystemInfo(&system_info); + + return system_info.dwPageSize; + +#elif defined(ZYAN_POSIX) + + return sysconf(_SC_PAGE_SIZE); + +#endif +} + +ZyanU32 ZyanMemoryGetSystemAllocationGranularity(void) +{ +#if defined(ZYAN_WINDOWS) + + SYSTEM_INFO system_info; + GetSystemInfo(&system_info); + + return system_info.dwAllocationGranularity; + +#elif defined(ZYAN_POSIX) + + return sysconf(_SC_PAGE_SIZE); + +#endif +} + +/* ---------------------------------------------------------------------------------------------- */ +/* Memory management */ +/* ---------------------------------------------------------------------------------------------- */ + +ZyanStatus ZyanMemoryVirtualProtect(void* address, ZyanUSize size, + ZyanMemoryPageProtection protection) +{ +#if defined(ZYAN_WINDOWS) + + DWORD old; + if (!VirtualProtect(address, size, protection, &old)) + { + return ZYAN_STATUS_BAD_SYSTEMCALL; + } + +#elif defined(ZYAN_POSIX) + + if (mprotect(address, size, protection)) + { + return ZYAN_STATUS_BAD_SYSTEMCALL; + } + +#endif + + return ZYAN_STATUS_SUCCESS; +} + +ZyanStatus ZyanMemoryVirtualFree(void* address, ZyanUSize size) +{ +#if defined(ZYAN_WINDOWS) + + ZYAN_UNUSED(size); + if (!VirtualFree(address, 0, MEM_RELEASE)) + { + return ZYAN_STATUS_BAD_SYSTEMCALL; + } + +#elif defined(ZYAN_POSIX) + + if (munmap(address, size)) + { + return ZYAN_STATUS_BAD_SYSTEMCALL; + } + +#endif + + return ZYAN_STATUS_SUCCESS; +} + +/* ---------------------------------------------------------------------------------------------- */ + +/* ============================================================================================== */ + +#endif /* ZYAN_NO_LIBC */ |