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