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/* $Id: kLdrDyldOS.c 29 2009-07-01 20:30:29Z bird $ */
/** @file
* kLdr - The Dynamic Loader, OS specific operations.
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <k/kLdr.h>
#include "kLdrInternal.h"
#if K_OS == K_OS_OS2
# define INCL_BASE
# define INCL_ERRORS
# include <os2.h>
#elif K_OS == K_OS_WINDOWS
# undef IMAGE_DOS_SIGNATURE
# undef IMAGE_NT_SIGNATURE
# include <Windows.h>
#else
# include <k/kHlpAlloc.h>
#endif
/**
* Allocates a stack.
*
* @returns Pointer to the stack. NULL on allocation failure (assumes out of memory).
* @param cb The size of the stack. This shall be page aligned.
* If 0, a OS specific default stack size will be employed.
*/
void *kldrDyldOSAllocStack(KSIZE cb)
{
#if K_OS == K_OS_OS2
APIRET rc;
PVOID pv;
if (!cb)
cb = 1 * 1024*1024; /* 1MB */
rc = DosAllocMem(&pv, cb, OBJ_TILE | PAG_COMMIT | PAG_WRITE | PAG_READ);
if (rc == NO_ERROR)
return pv;
return NULL;
#elif K_OS == K_OS_WINDOWS
if (!cb)
cb = 1 *1024*1024; /* 1MB */
return VirtualAlloc(NULL, cb, MEM_COMMIT, PAGE_READWRITE);
#else
void *pv;
if (!cb)
cb = 1 * 1024*1024; /* 1MB */
if (!kHlpPageAlloc(&pv, cb, KPROT_READWRITE, K_FALSE))
return pv;
return NULL;
#endif
}
/**
* Invokes the main executable entry point with whatever
* parameters specific to the host OS and/or module format.
*
* @returns
* @param uMainEPAddress The address of the main entry point.
* @param pvStack Pointer to the stack object.
* @param cbStack The size of the stack object.
*/
int kldrDyldOSStartExe(KUPTR uMainEPAddress, void *pvStack, KSIZE cbStack)
{
#if K_OS == K_OS_WINDOWS
/*
* Invoke the entrypoint on the current stack for now.
* Deal with other formats and stack switching another day.
*/
int rc;
int (*pfnEP)(void);
pfnEP = (int (*)(void))uMainEPAddress;
rc = pfnEP();
TerminateProcess(GetCurrentProcess(), rc);
kHlpAssert(!"TerminateProcess failed");
for (;;)
TerminateProcess(GetCurrentProcess(), rc);
#endif
return -1;
}
void kldrDyldDoLoadExeStackSwitch(PKLDRDYLDMOD pExe, void *pvStack, KSIZE cbStack)
{
/*kHlpAssert(!"not implemented");*/
/** @todo implement this properly! */
kldrDyldDoLoadExe(pExe);
}
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