552 lines
14 KiB
C
552 lines
14 KiB
C
static char RCSId[] = "$Id: wine.c,v 1.2 1993/07/04 04:04:21 root Exp root $";
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static char Copyright[] = "Copyright Robert J. Amstadt, 1993";
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/unistd.h>
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#include <linux/head.h>
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#include <linux/ldt.h>
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#include <linux/segment.h>
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#include <string.h>
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#include <errno.h>
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#include "neexe.h"
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#include "segmem.h"
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#include "prototypes.h"
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#include "dlls.h"
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#include "wine.h"
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extern int CallToInit16(unsigned long csip, unsigned long sssp,
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unsigned short ds);
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extern void CallTo32();
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char * GetModuleName(struct w_files * wpnt, int index, char *buffer);
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extern unsigned char ran_out;
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unsigned short WIN_StackSize;
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unsigned short WIN_HeapSize;
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struct w_files * wine_files = NULL;
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char **Argv;
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int Argc;
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struct mz_header_s *CurrentMZHeader;
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struct ne_header_s *CurrentNEHeader;
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int CurrentNEFile;
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/**********************************************************************
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* DebugPrintString
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*/
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int
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DebugPrintString(char *str)
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{
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printf("%s", str);
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return 0;
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}
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/**********************************************************************
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* myerror
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*/
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void
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myerror(const char *s)
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{
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char buffer[200];
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sprintf(buffer, "%s", Argv[0]);
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if (s == NULL)
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perror(buffer);
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else
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fprintf(stderr, "%s: %s\n", buffer, s);
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exit(1);
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}
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/* Load one NE format executable into memory */
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LoadImage(char * filename, char * modulename)
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{
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unsigned int read_size;
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int i;
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struct w_files * wpnt, *wpnt1;
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unsigned int status;
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/* First allocate a spot to store the info we collect, and add it to
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* our linked list.
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*/
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wpnt = (struct w_files *) malloc(sizeof(struct w_files));
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if(wine_files == NULL)
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wine_files = wpnt;
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else {
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wpnt1 = wine_files;
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while(wpnt1->next) wpnt1 = wpnt1->next;
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wpnt1->next = wpnt;
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};
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wpnt->next = NULL;
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/*
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* Open file for reading.
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*/
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wpnt->fd = open(filename, O_RDONLY);
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if (wpnt->fd < 0)
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{
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myerror(NULL);
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}
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/*
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* Establish header pointers.
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*/
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wpnt->filename = strdup(filename);
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wpnt->name = NULL;
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if(modulename) wpnt->name = strdup(modulename);
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wpnt->mz_header = (struct mz_header_s *) malloc(sizeof(struct mz_header_s));;
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status = lseek(wpnt->fd, 0, SEEK_SET);
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if (read(wpnt->fd, wpnt->mz_header, sizeof(struct mz_header_s)) !=
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sizeof(struct mz_header_s))
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{
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myerror("Unable to read MZ header from file");
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}
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if (wpnt->mz_header->must_be_0x40 != 0x40)
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myerror("This is not a Windows program");
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wpnt->ne_header = (struct ne_header_s *) malloc(sizeof(struct ne_header_s));
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status = lseek(wpnt->fd, wpnt->mz_header->ne_offset, SEEK_SET);
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if (read(wpnt->fd, wpnt->ne_header, sizeof(struct ne_header_s))
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!= sizeof(struct ne_header_s))
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{
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myerror("Unable to read NE header from file");
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}
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if (wpnt->ne_header->header_type[0] != 'N' ||
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wpnt->ne_header->header_type[1] != 'E')
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myerror("This is not a Windows program");
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if(wine_files == wpnt){
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CurrentMZHeader = wpnt->mz_header;
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CurrentNEHeader = wpnt->ne_header;
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CurrentNEFile = wpnt->fd;
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WIN_StackSize = wpnt->ne_header->stack_length;
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WIN_HeapSize = wpnt->ne_header->local_heap_length;
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};
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/*
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* Create segment selectors.
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*/
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status = lseek(wpnt->fd, wpnt->mz_header->ne_offset +
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wpnt->ne_header->segment_tab_offset,
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SEEK_SET);
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read_size = wpnt->ne_header->n_segment_tab *
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sizeof(struct ne_segment_table_entry_s);
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wpnt->seg_table = (struct ne_segment_table_entry_s *) malloc(read_size);
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if (read(wpnt->fd, wpnt->seg_table, read_size) != read_size)
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myerror("Unable to read segment table header from file");
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wpnt->selector_table = CreateSelectors(wpnt);
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/* Get the lookup table. This is used for looking up the addresses
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of functions that are exported */
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read_size = wpnt->ne_header->entry_tab_length;
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wpnt->lookup_table = (char *) malloc(read_size);
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lseek(wpnt->fd, wpnt->mz_header->ne_offset +
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wpnt->ne_header->entry_tab_offset, SEEK_SET);
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if (read(wpnt->fd, wpnt->lookup_table, read_size) != read_size)
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myerror("Unable to read lookup table header from file");
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/* Get the iname table. This is used for looking up the names
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of functions that are exported */
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status = lseek(wpnt->fd, wpnt->ne_header->nrname_tab_offset, SEEK_SET);
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read_size = wpnt->ne_header->nrname_tab_length;
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wpnt->nrname_table = (char *) malloc(read_size);
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if (read(wpnt->fd, wpnt->nrname_table, read_size) != read_size)
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myerror("Unable to read nrname table header from file");
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status = lseek(wpnt->fd, wpnt->mz_header->ne_offset +
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wpnt->ne_header->rname_tab_offset, SEEK_SET);
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read_size = wpnt->ne_header->moduleref_tab_offset -
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wpnt->ne_header->rname_tab_offset;
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wpnt->rname_table = (char *) malloc(read_size);
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if (read(wpnt->fd, wpnt->rname_table, read_size) != read_size)
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myerror("Unable to read rname table header from file");
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/* Now get the module name */
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wpnt->name = (char*) malloc(*wpnt->rname_table + 1);
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memcpy(wpnt->name, wpnt->rname_table+1, *wpnt->rname_table);
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wpnt->name[*wpnt->rname_table] = 0;
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/*
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* Now load any DLLs that this module refers to.
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*/
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for(i=0; i<wpnt->ne_header->n_mod_ref_tab; i++){
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char buff[14];
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char buff2[14];
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int fd, j;
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GetModuleName(wpnt, i + 1, buff);
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if(FindDLLTable(buff)) continue; /* This module already loaded */
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/* The next trick is to convert the case, and add the .dll
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* extension if required to find the actual library. We may want
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* to use a search path at some point as well. */
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/* First try the straight name */
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strcpy(buff2, buff);
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if(fd = open(buff2, O_RDONLY) >= 0) {
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close(fd);
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LoadImage(buff2, buff);
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continue;
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};
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/* OK, that did not work, try making it lower-case, and add the .dll
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extension */
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for(j=0; j<strlen(buff2); j++)
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if(buff2[j] >= 'A' && buff2[j] <= 'Z') buff2[j] |= 0x20;
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strcat(buff2, ".dll");
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if(fd = open(buff2, O_RDONLY) >= 0) {
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close(fd);
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LoadImage(buff2, buff);
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continue;
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};
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fprintf(stderr,"Unable to load:%s\n", buff);
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};
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}
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/**********************************************************************
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* main
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*/
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_WinMain(int argc, char **argv)
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{
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int segment;
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struct w_files * wpnt;
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int cs_reg, ds_reg, ss_reg, ip_reg, sp_reg;
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int i;
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int rv;
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Argc = argc;
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Argv = argv;
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if (argc < 2)
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{
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fprintf(stderr, "usage: %s FILENAME\n", argv[0]);
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exit(1);
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}
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LoadImage(argv[1], NULL);
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if(ran_out) exit(1);
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#ifdef DEBUG
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GetEntryDLLName("USER", "INITAPP", 0, 0);
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for(i=0; i<1024; i++) {
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int j;
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j = GetEntryPointFromOrdinal(wine_files, i);
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if(j == 0) break;
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fprintf(stderr," %d %x\n", i, j);
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};
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#endif
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/*
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* Fixup references.
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*/
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wpnt = wine_files;
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for(wpnt = wine_files; wpnt; wpnt = wpnt->next)
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for (segment = 0; segment < wpnt->ne_header->n_segment_tab; segment++)
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{
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if (FixupSegment(wpnt, segment) < 0)
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{
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myerror("fixup failed.");
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}
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}
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/*
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* Fixup stack and jump to start.
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*/
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ds_reg = wine_files->selector_table[wine_files->ne_header->auto_data_seg-1].selector;
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cs_reg = wine_files->selector_table[wine_files->ne_header->cs-1].selector;
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ip_reg = wine_files->ne_header->ip;
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ss_reg = wine_files->selector_table[wine_files->ne_header->ss-1].selector;
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sp_reg = wine_files->ne_header->sp;
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rv = CallToInit16(cs_reg << 16 | ip_reg, ss_reg << 16 | sp_reg, ds_reg);
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printf ("rv = %x\n", rv);
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}
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/**********************************************************************
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* GetImportedName
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*/
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char *
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GetImportedName(int fd, struct mz_header_s *mz_header,
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struct ne_header_s *ne_header, int name_offset, char *buffer)
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{
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char *p;
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int length;
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int status;
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int i;
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status = lseek(fd, mz_header->ne_offset + ne_header->iname_tab_offset +
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name_offset, SEEK_SET);
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length = 0;
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read(fd, &length, 1); /* Get the length byte */
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read(fd, buffer, length);
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buffer[length] = 0;
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return buffer;
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}
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/**********************************************************************
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* GetModuleName
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*/
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char *
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GetModuleName(struct w_files * wpnt, int index, char *buffer)
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{
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int fd = wpnt->fd;
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struct mz_header_s *mz_header = wpnt->mz_header;
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struct ne_header_s *ne_header = wpnt->ne_header;
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char *p;
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int length;
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int name_offset, status;
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int i;
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status = lseek(fd, mz_header->ne_offset + ne_header->moduleref_tab_offset +
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2*(index - 1), SEEK_SET);
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name_offset = 0;
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read(fd, &name_offset, 2);
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status = lseek(fd, mz_header->ne_offset + ne_header->iname_tab_offset +
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name_offset, SEEK_SET);
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length = 0;
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read(fd, &length, 1); /* Get the length byte */
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read(fd, buffer, length);
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buffer[length] = 0;
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/* Module names are always upper case */
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for(i=0; i<length; i++)
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if(buffer[i] >= 'a' && buffer[i] <= 'z') buffer[i] &= ~0x20;
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return buffer;
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}
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/**********************************************************************
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* FixupSegment
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*/
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int
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FixupSegment(struct w_files * wpnt, int segment_num)
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{
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int fd = wpnt->fd;
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struct mz_header_s * mz_header = wpnt->mz_header;
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struct ne_header_s *ne_header = wpnt->ne_header;
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struct ne_segment_table_entry_s *seg_table = wpnt->seg_table;
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struct segment_descriptor_s *selector_table = wpnt->selector_table;
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struct relocation_entry_s *rep, *rep1;
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struct ne_segment_table_entry_s *seg;
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struct segment_descriptor_s *sel;
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struct dll_table_entry_s *dll_table;
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int status;
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unsigned short *sp;
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unsigned int selector, address;
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unsigned int next_addr;
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int ordinal;
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char dll_name[257];
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char func_name[257];
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int i, n_entries;
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seg = &seg_table[segment_num];
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sel = &selector_table[segment_num];
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if ((seg->seg_data_offset == 0) ||
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!(seg->seg_flags & NE_SEGFLAGS_RELOC_DATA))
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return 0;
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/*
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* Go through the relocation table on entry at a time.
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*/
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i = seg->seg_data_length;
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if (i == 0)
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i = 0x10000;
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status = lseek(fd, seg->seg_data_offset *
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(1 << ne_header->align_shift_count) + i, SEEK_SET);
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n_entries = 0;
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read(fd, &n_entries, sizeof(short int));
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rep = (struct relocation_entry_s *)
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malloc(n_entries * sizeof(struct relocation_entry_s));
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if (read(fd,rep, n_entries * sizeof(struct relocation_entry_s)) !=
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n_entries * sizeof(struct relocation_entry_s))
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{
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myerror("Unable to read relocation information");
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}
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rep1 = rep;
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for (i = 0; i < n_entries; i++, rep++)
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{
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/*
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* Get the target address corresponding to this entry.
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*/
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switch (rep->relocation_type)
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{
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case NE_RELTYPE_ORDINAL:
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if (GetModuleName(wpnt, rep->target1,
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dll_name) == NULL)
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{
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fprintf(stderr, "NE_RELTYPE_ORDINAL failed");
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return -1;
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}
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ordinal = rep->target2;
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status = GetEntryDLLOrdinal(dll_name, ordinal, &selector,
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&address);
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if (status)
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{
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char s[80];
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sprintf(s, "Bad DLL name '%s.%d'", dll_name, ordinal);
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myerror(s);
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return -1;
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}
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#ifdef DEBUG_FIXUP
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printf("%d: %s.%d: %04.4x:%04.4x\n", i + 1, dll_name, ordinal,
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selector, address);
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#endif
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break;
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case NE_RELTYPE_NAME:
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if (GetModuleName(wpnt, rep->target1, dll_name)
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== NULL)
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{
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fprintf(stderr,"NE_RELTYPE_NAME failed");
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return -1;
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}
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if (GetImportedName(fd, mz_header, ne_header,
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rep->target2, func_name) == NULL)
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{
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fprintf(stderr,"getimportedname failed");
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return -1;
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}
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status = GetEntryDLLName(dll_name, func_name, &selector,
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&address);
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if (status)
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{
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char s[80];
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sprintf(s, "Bad DLL name '%s (%s)'", dll_name,func_name);
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myerror(s);
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return -1;
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}
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#ifdef DEBUG_FIXUP
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printf("%d: %s %s.%d: %04.4x:%04.4x\n", i + 1, func_name,
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dll_name, ordinal, selector, address);
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#endif
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break;
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case NE_RELTYPE_INTERNAL:
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if (rep->target1 == 0x00ff)
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{
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address = GetEntryPointFromOrdinal(wpnt, rep->target2);
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selector = (address >> 16) & 0xffff;
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address &= 0xffff;
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}
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else
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{
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selector = selector_table[rep->target1-1].selector;
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address = rep->target2;
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}
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#ifdef DEBUG_FIXUP
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printf("%d: %04.4x:%04.4x\n", i + 1, selector, address);
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#endif
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break;
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case 7:
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/* Relocation type 7:
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*
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* These appear to be used as fixups for the Windows
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* floating point emulator. Let's just ignore them and
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* try to use the hardware floating point. Linux should
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* successfully emulate the coprocessor if it doesn't
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* exist.
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*/
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#ifdef DEBUG_FIXUP
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printf("%d: ADDR TYPE %d, TYPE %d, OFFSET %04.4x, ",
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i + 1, rep->address_type, rep->relocation_type,
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rep->offset);
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printf("TARGET %04.4x %04.4x\n", rep->target1, rep->target2);
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#endif
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continue;
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default:
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#ifndef DEBUG_FIXUP
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printf("%d: ADDR TYPE %d, TYPE %d, OFFSET %04.4x, ",
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i + 1, rep->address_type, rep->relocation_type,
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rep->offset);
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printf("TARGET %04.4x %04.4x\n", rep->target1, rep->target2);
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#endif
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free(rep1);
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return -1;
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}
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/*
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* Stuff the right size result in.
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*/
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sp = (unsigned short *) ((char *) sel->base_addr + rep->offset);
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switch (rep->address_type)
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{
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case NE_RADDR_OFFSET16:
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do {
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next_addr = *sp;
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*sp = (unsigned short) address;
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sp = (unsigned short *) ((char *) sel->base_addr + next_addr);
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}
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while (next_addr != 0xffff);
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break;
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case NE_RADDR_POINTER32:
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do {
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next_addr = *sp;
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*sp = (unsigned short) address;
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*(sp+1) = (unsigned short) selector;
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sp = (unsigned short *) ((char *) sel->base_addr + next_addr);
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}
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while (next_addr != 0xffff);
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break;
|
||
|
||
case NE_RADDR_SELECTOR:
|
||
do {
|
||
next_addr = *sp;
|
||
*sp = (unsigned short) selector;
|
||
sp = (unsigned short *) ((char *) sel->base_addr + next_addr);
|
||
}
|
||
while (next_addr != 0xffff);
|
||
|
||
break;
|
||
|
||
default:
|
||
#ifdef DEBUG_FIXUP
|
||
printf("%d: ADDR TYPE %d, TYPE %d, OFFSET %04.4x, ",
|
||
i + 1, rep->address_type, rep->relocation_type,
|
||
rep->offset);
|
||
printf("TARGET %04.4x %04.4x\n", rep->target1, rep->target2);
|
||
#endif
|
||
free(rep1);
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
free(rep1);
|
||
return 0;
|
||
}
|