Mercurial > pub > dyncall > dyncall
view dynload/dynload_syms_pe.c @ 188:44ae5b653086
- more endian detection in macros
author | Tassilo Philipp |
---|---|
date | Mon, 13 Mar 2017 13:23:10 +0100 |
parents | 3e629dc19168 |
children | 6c7591cef6a8 |
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/* Package: dyncall Library: dynload File: dynload/dynload_syms_pe.c Description: License: Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>, Tassilo Philipp <tphilipp@potion-studios.com> Olivier Chafik <olivier.chafik@gmail.com> Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "dynload.h" #include "dynload_alloc.h" #include <windows.h> struct DLLib_ { IMAGE_DOS_HEADER dos_header; }; struct DLSyms_ { DLLib* pLib; const char* pBase; const DWORD* pNames; const DWORD* pFuncs; const unsigned short* pOrds; size_t count; }; DLSyms* dlSymsInit(const char* libPath) { DLLib* pLib = dlLoadLibrary(libPath); DLSyms* pSyms = (DLSyms*)dlAllocMem(sizeof(DLSyms)); const char* base = (const char*) pLib; IMAGE_DOS_HEADER* pDOSHeader = (IMAGE_DOS_HEADER*) base; IMAGE_NT_HEADERS* pNTHeader = (IMAGE_NT_HEADERS*) ( base + pDOSHeader->e_lfanew ); IMAGE_DATA_DIRECTORY* pExportsDataDir = &pNTHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]; IMAGE_EXPORT_DIRECTORY* pExports = (IMAGE_EXPORT_DIRECTORY*) (base + pExportsDataDir->VirtualAddress); pSyms->pBase = base; pSyms->pNames = (DWORD*)(base + pExports->AddressOfNames); pSyms->pFuncs = (DWORD*)(base + pExports->AddressOfFunctions); pSyms->pOrds = (unsigned short*)(base + pExports->AddressOfNameOrdinals); pSyms->count = (size_t)pExports->NumberOfNames; pSyms->pLib = pLib; return pSyms; } void dlSymsCleanup(DLSyms* pSyms) { if(pSyms) { dlFreeLibrary(pSyms->pLib); dlFreeMem(pSyms); } } int dlSymsCount(DLSyms* pSyms) { return (int)pSyms->count; } const char* dlSymsName(DLSyms* pSyms, int index) { return (const char*)((const char*)pSyms->pBase + pSyms->pNames[index]); } void* dlSymsValue(DLSyms* pSyms, int index) { return (void*)(pSyms->pBase + pSyms->pFuncs[pSyms->pOrds[index]]); } const char* dlSymsNameFromValue(DLSyms* pSyms, void* value) { int i, c=dlSymsCount(pSyms); for(i=0; i<c; ++i) { if(dlSymsValue(pSyms, i) == value) return dlSymsName(pSyms, i); } /* Not found. */ return NULL; }