if1632/relay.c

   1 static char RCSId[] = "$Id: relay.c,v 1.2 1993/07/04 04:04:21 root Exp root $";
   2 static char Copyright[] = "Copyright  Robert J. Amstadt, 1993";
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <sys/types.h>
   8 #include <sys/stat.h>
   9 #include <fcntl.h>
  10 #include <unistd.h>
  11 #ifdef linux
  12 #include <linux/unistd.h>
  13 #include <linux/head.h>
  14 #include <linux/ldt.h>
  15 #include <linux/segment.h>
  16 #endif
  17 #include <errno.h>
  18
  19 #include "neexe.h"
  20 #include "segmem.h"
  21 #include "prototypes.h"
  22 #include "dlls.h"
  23 #include "options.h"
  24
  25 #define DEBUG_RELAY /* */
  26
  27 #define N_BUILTINS      10
  28
  29 struct dll_name_table_entry_s dll_builtin_table[N_BUILTINS] =
  30 {
  31     { "KERNEL",  KERNEL_table,  410, 1 },
  32     { "USER",    USER_table,    540, 2 },
  33     { "GDI",     GDI_table,     490, 3 },
  34     { "UNIXLIB", UNIXLIB_table,  10, 4 },
  35     { "WIN87EM", WIN87EM_table,  10, 5 },
  36     { "SHELL",   SHELL_table,   256, 6 },
  37     { "SOUND",   SOUND_table,    20, 7 },
  38     { "KEYBOARD",KEYBOARD_table,137, 8 },
  39     { "WINSOCK", WINSOCK_table, 155, 9 },
  40     { "STRESS",  STRESS_table,   15,10 },
  41 };
  42
  43 unsigned short *Stack16Frame;
  44
  45 extern unsigned long  IF1632_Saved16_esp;
  46 extern unsigned long  IF1632_Saved16_ebp;
  47 extern unsigned short IF1632_Saved16_ss;
  48
  49 /**********************************************************************
  50  *                                      DLLRelay
  51  *
  52  * We get a stack frame pointer to data that looks like this:
  53  *
  54  *   Hex Offset Contents
  55  *   ---------- -------
  56  *      +00     previous saved_16ss
  57  *      +02     previous saved_16ebp
  58  *      +06     previous saved_16esp
  59  *      +0A     16-bit es
  60  *      +0C     16-bit ds
  61  *      +0E     16-bit ebp
  62  *      +12     length of 16-bit arguments
  63  *      +14     16-bit ip
  64  *      +16     16-bit cs
  65  *      +18     arguments
  66  */
  67 int
  68 DLLRelay(unsigned int func_num, unsigned int seg_off)
  69 {
  70     struct dll_table_entry_s *dll_p;
  71     unsigned short *saved_Stack16Frame;
  72     unsigned int segment;
  73     unsigned int offset;
  74     unsigned int dll_id;
  75     unsigned int ordinal;
  76     int arg_table[DLL_MAX_ARGS];
  77     void *arg_ptr;
  78     int (*func_ptr)();
  79     int i;
  80     int ret_val;
  81
  82     /*
  83      * Determine address of arguments.
  84      */
  85     saved_Stack16Frame = Stack16Frame;
  86     Stack16Frame = (unsigned short *) seg_off;
  87     arg_ptr = (void *) (seg_off + 0x18);
  88
  89     /*
  90      * Extract the DLL number and ordinal number.
  91      */
  92     dll_id  = ((func_num >> 16) & 0xffff) - 1;
  93     ordinal = func_num & 0xffff;
  94     dll_p   = &dll_builtin_table[dll_id].dll_table[ordinal];
  95
  96 #ifdef DEBUG_RELAY
  97     if (Options.relay_debug)
  98     {
  99         unsigned int *ret_addr;
 100         unsigned short *stack_p;
 101
 102         ret_addr = (unsigned int *) ((char *) seg_off + 0x14);
 103         printf("Calling %s (%s.%d), 16-bit stack at %04x:%04x, ",
 104                dll_p->export_name,
 105                dll_builtin_table[dll_id].dll_name, ordinal,
 106                seg_off >> 16, seg_off & 0xffff);
 107         printf("return to %08x\n", *ret_addr);
 108         printf("  ESP %08x, EBP %08x, SS %04x\n",
 109                IF1632_Saved16_esp, IF1632_Saved16_ebp,
 110                IF1632_Saved16_ss);
 111
 112 #ifdef DEBUG_STACK
 113         stack_p = (unsigned short *) seg_off;
 114         for (i = 0; i < 24; i++, stack_p++)
 115         {
 116             printf("%04x ", *stack_p);
 117             if ((i & 7) == 7)
 118                 printf("\n");
 119         }
 120         printf("\n");
 121 #endif /* DEBUG_STACK */
 122     }
 123 #endif /* DEBUG_RELAY */
 124
 125     /*
 126      * Make sure we have a handler defined for this call.
 127      */
 128     if (dll_p->handler == NULL)
 129     {
 130         char buffer[100];
 131
 132         sprintf(buffer, "No handler for routine %s.%d",
 133                 dll_builtin_table[dll_id].dll_name, ordinal);
 134         myerror(buffer);
 135     }
 136     func_ptr = dll_p->handler;
 137
 138     /*
 139      * OK, special case.  If the handler is define as taking no arguments
 140      * then pass the address of the arguments on the 16-bit stack to the
 141      * handler.  It will just ignore the pointer if it really takes no
 142      * arguments.  This allows us to write slightly faster library routines
 143      * if we choose.
 144      */
 145     if (dll_p->n_args == 0)
 146     {
 147         ret_val = (*func_ptr)(arg_ptr);
 148         Stack16Frame = saved_Stack16Frame;
 149         return ret_val;
 150     }
 151
 152     /*
 153      * Getting this far means we need to convert the 16-bit argument stack.
 154      */
 155     for (i = 0; i < dll_p->n_args; i++)
 156     {
 157         short *sp;
 158         int *ip;
 159
 160         offset = dll_p->args[i].dst_arg;
 161
 162         switch (dll_p->args[i].src_type)
 163         {
 164           case DLL_ARGTYPE_SIGNEDWORD:
 165             sp = (short *) ((char *) arg_ptr + offset);
 166             arg_table[i] = *sp;
 167             break;
 168
 169           case DLL_ARGTYPE_WORD:
 170             sp = (short *) ((char *) arg_ptr + offset);
 171             arg_table[i] = (int) *sp & 0xffff;
 172             break;
 173
 174           case DLL_ARGTYPE_LONG:
 175             ip = (int *) ((char *) arg_ptr + offset);
 176             arg_table[i] = *ip;
 177             break;
 178
 179           case DLL_ARGTYPE_FARPTR:
 180             ip = (int *) ((char *) arg_ptr + offset);
 181             if (*ip & 0xffff0000)
 182                 arg_table[i] = FIXPTR(*ip);
 183             else
 184                 arg_table[i] = *ip;
 185             break;
 186         }
 187     }
 188
 189     /*
 190      * Call the handler
 191      */
 192     ret_val = (*func_ptr)(arg_table[0], arg_table[1], arg_table[2],
 193                           arg_table[3], arg_table[4], arg_table[5],
 194                           arg_table[6], arg_table[7], arg_table[8],
 195                           arg_table[9], arg_table[10], arg_table[11],
 196                           arg_table[12], arg_table[13], arg_table[14],
 197                           arg_table[15]);
 198
 199 #ifdef DEBUG_RELAY
 200     if (Options.relay_debug)
 201     {
 202         printf("Returning %08.8x from %s (%s.%d)\n",
 203                ret_val,
 204                dll_p->export_name,
 205                dll_builtin_table[dll_id].dll_name, ordinal);
 206     }
 207 #endif
 208
 209     Stack16Frame = saved_Stack16Frame;
 210     return ret_val;
 211 }
 212
 213 /**********************************************************************
 214  *                                      FindDLLTable
 215  */
 216 struct  dll_table_entry_s *
 217 FindDLLTable(char *dll_name)
 218 {
 219     int i;
 220
 221     for (i = 0; i < N_BUILTINS; i++)
 222         if (strcmp(dll_builtin_table[i].dll_name, dll_name) == 0)
 223             return dll_builtin_table[i].dll_table;
 224
 225     return NULL;
 226 }
 227
 228 /**********************************************************************
 229  *                                      FindOrdinalFromName
 230  */
 231 int
 232 FindOrdinalFromName(struct dll_table_entry_s *dll_table, char *func_name)
 233 {
 234     int i, limit;
 235
 236     for (i = 0; i < N_BUILTINS; i++)
 237         if (dll_table == dll_builtin_table[i].dll_table)
 238             break;
 239
 240     if (i == N_BUILTINS)
 241         return 0;
 242
 243     limit = dll_builtin_table[i].dll_table_length;
 244     for (i = 0; i < limit; i++)
 245         if (strcasecmp(dll_table[i].export_name, func_name) == 0)
 246             return i;
 247
 248     return 0;
 249 }
 250 /**********************************************************************
 251  *                                      ReturnArg
 252  */
 253 int
 254 ReturnArg(int arg)
 255 {
 256     return arg;
 257 }
 258
 259 #ifdef WINESTAT
 260 void winestat(){
 261         int i, j;
 262         double perc;
 263         int used, implemented;
 264         int tused, timplemented;
 265         struct dll_table_entry_s *table;
 266
 267         tused = 0;
 268         timplemented = 0;
 269     for (i = 0; i < N_BUILTINS; i++) {
 270             table = dll_builtin_table[i].dll_table;
 271             used = 0;
 272             implemented = 0;
 273             for(j=0; j < dll_builtin_table[i].dll_table_length; j++) {
 274                     if(table[j].used){
 275                             used++;
 276                             if (table[j].handler) implemented++;
 277                             else
 278                                     printf("%s.%d\n",
 279                                            dll_builtin_table[i].dll_name,
 280                                            j);
 281                     };
 282             };
 283             tused += used;
 284             timplemented += implemented;
 285             if(used)
 286                     perc = implemented * 100.00 / used;
 287             else
 288                     perc = 0.0;
 289             printf("%s: %d %d %3.1f\n", dll_builtin_table[i].dll_name, implemented, used, perc);
 290     };
 291         perc = timplemented * 100.00 / tused;
 292         printf("TOTAL: %d %d %3.1f\n",timplemented, tused, perc);
 293 }
 294 #endif /* WINESTAT */