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Diffstat (limited to '')
-rw-r--r-- | src/lib/kStuff/kLdr/kLdrDyldOS.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/lib/kStuff/kLdr/kLdrDyldOS.c b/src/lib/kStuff/kLdr/kLdrDyldOS.c new file mode 100644 index 0000000..ed47561 --- /dev/null +++ b/src/lib/kStuff/kLdr/kLdrDyldOS.c @@ -0,0 +1,133 @@ +/* $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); +} + |