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/***************************************************************************************************
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 */