125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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#include "prodids.h"
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#include "version.h"
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void
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StoreName(PUCHAR sz, PIMAGE_SYMBOL psym, PULONG pcbStrings)
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{
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memset((void *)&psym->N.Name, 0, (size_t)sizeof(psym->N.Name));
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if (strlen(sz) <= IMAGE_SIZEOF_SHORT_NAME) {
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strncpy((char *)psym->N.ShortName, (char *)sz, IMAGE_SIZEOF_SHORT_NAME);
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} else {
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psym->N.Name.Long = *pcbStrings;
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*pcbStrings += strlen(sz) + 1;
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}
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}
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int main(int argc, char **argv)
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{
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PUCHAR szFrom, szTo, szFilename;
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FILE *pfile;
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IMAGE_FILE_HEADER hdr;
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IMAGE_SYMBOL sym;
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IMAGE_AUX_SYMBOL aux;
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ULONG cbStrings, foStringTable;
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IMAGE_SECTION_HEADER sec;
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DWORD dwProdid;
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if (argc != 4) {
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printf("usage: ALIASOBJ from-name to-name output-filename\n");
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exit(1);
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}
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szFrom = argv[1];
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szTo = argv[2];
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szFilename = argv[3];
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if ((pfile = fopen(szFilename, "wb")) == NULL) {
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printf("can't open file \"%s\"\n", szFilename);
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exit(1);
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}
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hdr.Machine = IMAGE_FILE_MACHINE_UNKNOWN;
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hdr.NumberOfSections = 1;
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hdr.TimeDateStamp = (DWORD) time(NULL);
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hdr.PointerToSymbolTable = sizeof(hdr) + sizeof(sec);
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hdr.NumberOfSymbols = 4;
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hdr.SizeOfOptionalHeader = 0;
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hdr.Characteristics = 0;
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fwrite(&hdr, sizeof(hdr), 1, pfile);
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// Generate one section header. This is necessary because of a link bug (vce:182)
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// which fails for .obj's with 0 sections and unknown machine type.
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//
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memset(&sec, 0, sizeof(sec));
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strcpy(sec.Name, ".text");
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sec.Characteristics = IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_EXECUTE;
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fwrite(&sec, sizeof(sec), 1, pfile);
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cbStrings = sizeof(ULONG); // make room for stringtab size
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#if (rmj == 7) && (rmm == 0)
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dwProdid = DwProdidFromProdidWBuild(prodidAliasObj70, rup);
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#else
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#error PRODID needs to be assigned
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#endif
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memset(sym.N.ShortName, 0, sizeof(sym.N.ShortName));
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strncpy((char *) sym.N.ShortName, symProdIdentName, IMAGE_SIZEOF_SHORT_NAME);
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sym.Value = dwProdid;
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sym.SectionNumber = symProdIdentSection;
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sym.Type = IMAGE_SYM_TYPE_NULL;
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sym.StorageClass = symProdIdentClass;
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sym.NumberOfAuxSymbols = 0;
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fwrite(&sym, sizeof(sym), 1, pfile);
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StoreName(szTo, &sym, &cbStrings);
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sym.Value = 0;
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sym.SectionNumber = IMAGE_SYM_UNDEFINED;
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sym.Type = IMAGE_SYM_TYPE_NULL;
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sym.StorageClass = IMAGE_SYM_CLASS_EXTERNAL;
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sym.NumberOfAuxSymbols = 0;
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fwrite(&sym, sizeof(sym), 1, pfile);
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StoreName(szFrom, &sym, &cbStrings);
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sym.Value = 0;
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sym.SectionNumber = IMAGE_SYM_UNDEFINED;
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sym.Type = IMAGE_SYM_TYPE_NULL;
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sym.StorageClass = IMAGE_SYM_CLASS_WEAK_EXTERNAL;
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sym.NumberOfAuxSymbols = 1;
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fwrite(&sym, sizeof(sym), 1, pfile);
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memset(&aux, 0, sizeof(aux));
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aux.Sym.Misc.TotalSize = IMAGE_WEAK_EXTERN_SEARCH_ALIAS;
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aux.Sym.TagIndex = 1; // symtab index for extern
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fwrite(&aux, sizeof(aux), 1, pfile);
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// Write the string table.
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//
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foStringTable = ftell(pfile);
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fwrite(&cbStrings, sizeof(cbStrings), 1, pfile);
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if (strlen(szTo) > IMAGE_SIZEOF_SHORT_NAME) {
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fputs(szTo, pfile);
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fputc(0, pfile);
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}
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if (strlen(szFrom) > IMAGE_SIZEOF_SHORT_NAME) {
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fputs(szFrom, pfile);
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fputc(0, pfile);
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}
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assert(ftell(pfile) - foStringTable == cbStrings);
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fclose(pfile);
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return 0;
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}
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