loader/ext.c

   1 /********************************************************
   2  *
   3  *
   4  *      Stub functions for Wine module
   5  *
   6  *
   7  ********************************************************/
   8
   9 /*
  10  * Modified for use with MPlayer, detailed changelog at
  11  * http://svn.mplayerhq.hu/mplayer/trunk/
  12  */
  13
  14 #include "config.h"
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #ifdef HAVE_SYS_MMAN_H
  19 #include <sys/mman.h>
  20 #else
  21 #include "osdep/mmap.h"
  22 #endif
  23 #include <errno.h>
  24 #include <fcntl.h>
  25 #include <string.h>
  26 #include <stdarg.h>
  27 #include <ctype.h>
  28
  29 #include "osdep/mmap_anon.h"
  30 #include "wine/windef.h"
  31 #include "wine/winbase.h"
  32 #include "wine/debugtools.h"
  33 #include "wine/heap.h"
  34 #include "ext.h"
  35
  36 #if 0
  37 //REMOVE SIMPLIFY
  38 static void* mymalloc(unsigned int size)
  39 {
  40     printf("malloc %d\n", size);
  41     return malloc(size);
  42 }
  43
  44 #undef malloc
  45 #define malloc mymalloc
  46 #endif
  47
  48 int dbg_header_err( const char *dbg_channel, const char *func )
  49 {
  50     return 0;
  51 }
  52 int dbg_header_warn( const char *dbg_channel, const char *func )
  53 {
  54     return 0;
  55 }
  56 int dbg_header_fixme( const char *dbg_channel, const char *func )
  57 {
  58     return 0;
  59 }
  60 int dbg_header_trace( const char *dbg_channel, const char *func )
  61 {
  62     return 0;
  63 }
  64 int dbg_vprintf( const char *format, va_list args )
  65 {
  66     return 0;
  67 }
  68 int __vprintf( const char *format, ... )
  69 {
  70 #ifdef DETAILED_OUT
  71     va_list va;
  72     va_start(va, format);
  73     vprintf(format, va);
  74     va_end(va);
  75 #endif
  76     return 0;
  77 }
  78
  79 HANDLE WINAPI GetProcessHeap(void)
  80 {
  81     return 1;
  82 }
  83
  84 LPVOID WINAPI HeapAlloc(HANDLE heap, DWORD flags, DWORD size)
  85 {
  86     //static int i = 5;
  87     void* m = (flags & 0x8) ? calloc(size, 1) : malloc(size);
  88     //printf("HeapAlloc %p  %d  (%d)\n", m, size, flags);
  89     //if (--i == 0)
  90     //    abort();
  91     return m;
  92 }
  93
  94 WIN_BOOL WINAPI HeapFree(HANDLE heap, DWORD flags, LPVOID mem)
  95 {
  96     free(mem);
  97     //printf("HeapFree  %p\n", mem);
  98     //if (!mem)
  99     //    abort();
 100     return 1;
 101 }
 102
 103 static int last_error;
 104
 105 DWORD WINAPI GetLastError(void)
 106 {
 107     return last_error;
 108 }
 109
 110 VOID WINAPI SetLastError(DWORD error)
 111 {
 112     last_error=error;
 113 }
 114
 115 WIN_BOOL WINAPI ReadFile(HANDLE handle, LPVOID mem, DWORD size, LPDWORD result, LPOVERLAPPED flags)
 116 {
 117     *result=read(handle, mem, size);
 118     return *result;
 119 }
 120 INT WINAPI lstrcmpiA(LPCSTR c1, LPCSTR c2)
 121 {
 122     return strcasecmp(c1,c2);
 123 }
 124 LPSTR WINAPI lstrcpynA(LPSTR dest, LPCSTR src, INT num)
 125 {
 126     return strncpy(dest,src,num);
 127 }
 128 INT WINAPI lstrlenA(LPCSTR s)
 129 {
 130     return strlen(s);
 131 }
 132 INT WINAPI lstrlenW(LPCWSTR s)
 133 {
 134     int l;
 135     if(!s)
 136         return 0;
 137     l=0;
 138     while(s[l])
 139         l++;
 140      return l;
 141 }
 142 LPSTR WINAPI lstrcpynWtoA(LPSTR dest, LPCWSTR src, INT count)
 143 {
 144     LPSTR result = dest;
 145     int moved=0;
 146     if((dest==0) || (src==0))
 147         return 0;
 148     while(moved<count)
 149     {
 150         *dest=*src;
 151         moved++;
 152         if(*src==0)
 153             break;
 154         src++;
 155         dest++;
 156     }
 157     return result;
 158 }
 159 /* i stands here for ignore case! */
 160 int wcsnicmp(const unsigned short* s1, const unsigned short* s2, int n)
 161 {
 162     /*
 163     if(s1==0)
 164         return;
 165     if(s2==0)
 166         return;
 167     */
 168     while(n>0)
 169     {
 170         if (((*s1 | *s2) & 0xff00) || toupper((char)*s1) != toupper((char)*s2))
 171         {
 172
 173             if(*s1<*s2)
 174                 return -1;
 175             else
 176                 if(*s1>*s2)
 177                     return 1;
 178                 else
 179                     if(*s1==0)
 180                         return 0;
 181         }
 182         s1++;
 183         s2++;
 184         n--;
 185     }
 186     return 0;
 187 }
 188
 189 WIN_BOOL WINAPI IsBadReadPtr(LPCVOID data, UINT size)
 190 {
 191     if(size==0)
 192         return 0;
 193     if(data==NULL)
 194         return 1;
 195     return 0;
 196 }
 197 LPSTR HEAP_strdupA(HANDLE heap, DWORD flags, LPCSTR string)
 198 {
 199 //    return strdup(string);
 200     char* answ = malloc(strlen(string) + 1);
 201     strcpy(answ, string);
 202     return answ;
 203 }
 204 LPWSTR HEAP_strdupAtoW(HANDLE heap, DWORD flags, LPCSTR string)
 205 {
 206     int size, i;
 207     WCHAR* answer;
 208     if(string==0)
 209         return 0;
 210     size=strlen(string);
 211     answer = malloc(sizeof(WCHAR) * (size + 1));
 212     for(i=0; i<=size; i++)
 213         answer[i]=(short)string[i];
 214     return answer;
 215 }
 216 LPSTR HEAP_strdupWtoA(HANDLE heap, DWORD flags, LPCWSTR string)
 217 {
 218     int size, i;
 219     char* answer;
 220     if(string==0)
 221         return 0;
 222     size=0;
 223     while(string[size])
 224        size++;
 225     answer = malloc(size + 2);
 226     for(i=0; i<=size; i++)
 227         answer[i]=(char)string[i];
 228     return answer;
 229 }
 230
 231 /***********************************************************************
 232  *           FILE_dommap
 233  */
 234
 235 //#define MAP_PRIVATE
 236 //#define MAP_SHARED
 237 LPVOID FILE_dommap( int unix_handle, LPVOID start,
 238                     DWORD size_high, DWORD size_low,
 239                     DWORD offset_high, DWORD offset_low,
 240                     int prot, int flags )
 241 {
 242     int fd = -1;
 243     int pos;
 244     LPVOID ret;
 245
 246     if (size_high || offset_high)
 247         printf("offsets larger than 4Gb not supported\n");
 248
 249     if (unix_handle == -1)
 250     {
 251         ret = mmap_anon( start, size_low, prot, flags, offset_low );
 252     }
 253     else
 254     {
 255         fd = unix_handle;
 256         ret = mmap( start, size_low, prot, flags, fd, offset_low );
 257     }
 258
 259     if (ret != (LPVOID)-1)
 260     {
 261 //          printf("address %08x\n", *(int*)ret);
 262 //      printf("%x\n", ret);
 263             return ret;
 264     }
 265
 266 //    printf("mmap %d\n", errno);
 267
 268     /* mmap() failed; if this is because the file offset is not    */
 269     /* page-aligned (EINVAL), or because the underlying filesystem */
 270     /* does not support mmap() (ENOEXEC), we do it by hand.        */
 271
 272     if (unix_handle == -1) return ret;
 273     if ((errno != ENOEXEC) && (errno != EINVAL)) return ret;
 274     if (prot & PROT_WRITE)
 275     {
 276         /* We cannot fake shared write mappings */
 277 #ifdef MAP_SHARED
 278         if (flags & MAP_SHARED) return ret;
 279 #endif
 280 #ifdef MAP_PRIVATE
 281         if (!(flags & MAP_PRIVATE)) return ret;
 282 #endif
 283     }
 284 /*    printf( "FILE_mmap: mmap failed (%d), faking it\n", errno );*/
 285     /* Reserve the memory with an anonymous mmap */
 286     ret = FILE_dommap( -1, start, size_high, size_low, 0, 0,
 287                        PROT_READ | PROT_WRITE, flags );
 288     if (ret == (LPVOID)-1)
 289 //    {
 290 //      perror(
 291          return ret;
 292     /* Now read in the file */
 293     if ((pos = lseek( fd, offset_low, SEEK_SET )) == -1)
 294     {
 295         FILE_munmap( ret, size_high, size_low );
 296 //      printf("lseek\n");
 297         return (LPVOID)-1;
 298     }
 299     read( fd, ret, size_low );
 300     lseek( fd, pos, SEEK_SET );  /* Restore the file pointer */
 301     mprotect( ret, size_low, prot );  /* Set the right protection */
 302 //    printf("address %08x\n", *(int*)ret);
 303     return ret;
 304 }
 305
 306
 307 /***********************************************************************
 308  *           FILE_munmap
 309  */
 310 int FILE_munmap( LPVOID start, DWORD size_high, DWORD size_low )
 311 {
 312     if (size_high)
 313       printf("offsets larger than 4Gb not supported\n");
 314     return munmap( start, size_low );
 315 }
 316
 317 struct file_mapping_s;
 318 typedef struct file_mapping_s
 319 {
 320     int mapping_size;
 321     char* name;
 322     LPVOID handle;
 323     struct file_mapping_s* next;
 324     struct file_mapping_s* prev;
 325 }file_mapping;
 326 static file_mapping* fm=0;
 327
 328
 329
 330 #define PAGE_NOACCESS           0x01
 331 #define PAGE_READONLY           0x02
 332 #define PAGE_READWRITE          0x04
 333 #define PAGE_WRITECOPY          0x08
 334 #define PAGE_EXECUTE            0x10
 335 #define PAGE_EXECUTE_READ       0x20
 336 #define PAGE_EXECUTE_READWRITE  0x40
 337 #define PAGE_EXECUTE_WRITECOPY  0x80
 338 #define PAGE_GUARD              0x100
 339 #define PAGE_NOCACHE            0x200
 340
 341 HANDLE WINAPI CreateFileMappingA(HANDLE handle, LPSECURITY_ATTRIBUTES lpAttr,
 342                                  DWORD flProtect,
 343                                  DWORD dwMaxHigh, DWORD dwMaxLow,
 344                                  LPCSTR name)
 345 {
 346     int hFile = (int)handle;
 347     unsigned int len;
 348     LPVOID answer;
 349     int anon=0;
 350     int mmap_access=0;
 351     if(hFile<0)
 352         anon=1;
 353
 354     if(!anon)
 355     {
 356         len=lseek(hFile, 0, SEEK_END);
 357         lseek(hFile, 0, SEEK_SET);
 358     }
 359     else len=dwMaxLow;
 360
 361     if(flProtect & PAGE_READONLY)
 362         mmap_access |=PROT_READ;
 363     else
 364         mmap_access |=PROT_READ|PROT_WRITE;
 365
 366     if(anon)
 367         answer=mmap_anon(NULL, len, mmap_access, MAP_PRIVATE, 0);
 368     else
 369         answer=mmap(NULL, len, mmap_access, MAP_PRIVATE, hFile, 0);
 370
 371     if(answer!=(LPVOID)-1)
 372     {
 373         if(fm==0)
 374         {
 375             fm = malloc(sizeof(file_mapping));
 376             fm->prev=NULL;
 377         }
 378         else
 379         {
 380             fm->next = malloc(sizeof(file_mapping));
 381             fm->next->prev=fm;
 382             fm=fm->next;
 383         }
 384         fm->next=NULL;
 385         fm->handle=answer;
 386         if(name)
 387         {
 388             fm->name = malloc(strlen(name)+1);
 389             strcpy(fm->name, name);
 390         }
 391         else
 392             fm->name=NULL;
 393         fm->mapping_size=len;
 394
 395         return (HANDLE)answer;
 396     }
 397     return (HANDLE)0;
 398 }
 399 WIN_BOOL WINAPI UnmapViewOfFile(LPVOID handle)
 400 {
 401     file_mapping* p;
 402     int result;
 403     if(fm==0)
 404         return 0;
 405     for(p=fm; p; p=p->next)
 406     {
 407         if(p->handle==handle)
 408         {
 409             result=munmap((void*)handle, p->mapping_size);
 410             if(p->next)p->next->prev=p->prev;
 411             if(p->prev)p->prev->next=p->next;
 412             free(p->name);
 413             if(p==fm)
 414                 fm=p->prev;
 415             free(p);
 416             return result;
 417         }
 418     }
 419     return 0;
 420 }
 421 //static int va_size=0;
 422 struct virt_alloc_s;
 423 typedef struct virt_alloc_s
 424 {
 425     int mapping_size;
 426     char* address;
 427     struct virt_alloc_s* next;
 428     struct virt_alloc_s* prev;
 429     int state;
 430 }virt_alloc;
 431 static virt_alloc* vm=0;
 432 #define MEM_COMMIT              0x00001000
 433 #define MEM_RESERVE             0x00002000
 434
 435 LPVOID WINAPI VirtualAlloc(LPVOID address, DWORD size, DWORD type,  DWORD protection)
 436 {
 437     void* answer;
 438     long pgsz;
 439
 440     //printf("VirtualAlloc(0x%08X, %u, 0x%08X, 0x%08X)\n", (unsigned)address, size, type, protection);
 441
 442     if ((type&(MEM_RESERVE|MEM_COMMIT)) == 0) return NULL;
 443
 444     if (type&MEM_RESERVE && (unsigned)address&0xffff) {
 445         size += (unsigned)address&0xffff;
 446         address = (void*)((unsigned)address&~0xffff);
 447     }
 448     pgsz = sysconf(_SC_PAGESIZE);
 449     if (type&MEM_COMMIT && (unsigned)address%pgsz) {
 450         size += (unsigned)address%pgsz;
 451         address = (void*)((unsigned)address - (unsigned)address%pgsz);
 452     }
 453
 454     if (type&MEM_RESERVE && size<0x10000) size = 0x10000;
 455     if (size%pgsz) size += pgsz - size%pgsz;
 456
 457     if(address!=0)
 458     {
 459     //check whether we can allow to allocate this
 460         virt_alloc* str=vm;
 461         while(str)
 462         {
 463             if((unsigned)address>=(unsigned)str->address+str->mapping_size)
 464             {
 465                 str=str->prev;
 466                 continue;
 467             }
 468             if((unsigned)address+size<=(unsigned)str->address)
 469             {
 470                 str=str->prev;
 471                 continue;
 472             }
 473             if(str->state==0)
 474             {
 475                 // FIXME
 476                 if(   ((unsigned)address >= (unsigned)str->address)
 477                    && ((unsigned)address+size<=(unsigned)str->address+str->mapping_size)
 478                    && (type & MEM_COMMIT))
 479                 {
 480                     return address; //returning previously reserved memory
 481                 }
 482                 //printf(" VirtualAlloc(...) does not commit or not entirely within reserved, and\n");
 483             }
 484             /*printf(" VirtualAlloc(...) (0x%08X, %u) overlaps with (0x%08X, %u, state=%d)\n",
 485                    (unsigned)address, size, (unsigned)str->address, str->mapping_size, str->state);*/
 486             return NULL;
 487         }
 488     }
 489
 490     answer=mmap_anon(address, size, PROT_READ | PROT_WRITE | PROT_EXEC,
 491             MAP_PRIVATE, 0);
 492 //    answer=FILE_dommap(-1, address, 0, size, 0, 0,
 493 //      PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE);
 494
 495     if (answer != (void *)-1 && address && answer != address) {
 496         /* It is dangerous to try mmap() with MAP_FIXED since it does not
 497            always detect conflicts or non-allocation and chaos ensues after
 498            a successful call but an overlapping or non-allocated region.  */
 499         munmap(answer, size);
 500         answer = (void *) -1;
 501         errno = EINVAL;
 502         //printf(" VirtualAlloc(...) cannot satisfy requested address but address=NULL would work.\n");
 503     }
 504     if(answer==(void*)-1)
 505     {
 506         /*printf(" VirtualAlloc(...) mmap(0x%08X, %u, ...) failed with errno=%d (\"%s\")\n",
 507                (unsigned)address, size, errno, strerror(errno));*/
 508         return NULL;
 509     }
 510     else
 511     {
 512         virt_alloc *new_vm = malloc(sizeof(virt_alloc));
 513         new_vm->mapping_size=size;
 514         new_vm->address=(char*)answer;
 515         new_vm->prev=vm;
 516         if(type == MEM_RESERVE)
 517             new_vm->state=0;
 518         else
 519             new_vm->state=1;
 520         if(vm)
 521             vm->next=new_vm;
 522         vm=new_vm;
 523         vm->next=0;
 524         //if(va_size!=0)
 525         //    printf("Multiple VirtualAlloc!\n");
 526         //printf(" VirtualAlloc(...) provides (0x%08X, %u)\n", (unsigned)answer, size);
 527         return answer;
 528     }
 529 }
 530
 531 WIN_BOOL WINAPI VirtualFree(LPVOID  address, SIZE_T dwSize, DWORD dwFreeType)//not sure
 532 {
 533     virt_alloc* str=vm;
 534
 535     //printf("VirtualFree(0x%08X, %d, 0x%08X)\n", (unsigned)address, dwSize, dwFreeType);
 536     while(str)
 537     {
 538         if(address!=str->address)
 539         {
 540             str=str->prev;
 541             continue;
 542         }
 543         //printf(" VirtualFree(...) munmap(0x%08X, %d)\n", (unsigned)str->address, str->mapping_size);
 544         munmap(str->address, str->mapping_size);
 545         if(str->next)str->next->prev=str->prev;
 546         if(str->prev)str->prev->next=str->next;
 547         if(vm==str)vm=str->prev;
 548         free(str);
 549         return 0;
 550     }
 551     return -1;
 552 }
 553
 554 INT WINAPI WideCharToMultiByte(UINT codepage, DWORD flags, LPCWSTR src,
 555      INT srclen,LPSTR dest, INT destlen, LPCSTR defch, WIN_BOOL* used_defch)
 556 {
 557     int i;
 558     if(srclen==-1){srclen=0; while(src[srclen++]);}
 559     if(destlen==0)
 560         return srclen;
 561     if(used_defch)
 562         *used_defch=0;
 563     for(i=0; i<min(srclen, destlen); i++)
 564         *dest++=(char)*src++;
 565     return min(srclen, destlen);
 566 }
 567 INT WINAPI MultiByteToWideChar(UINT codepage,DWORD flags, LPCSTR src, INT srclen,
 568     LPWSTR dest, INT destlen)
 569 {
 570     int i;
 571     if(srclen==-1){srclen=0; while(src[srclen++]);}
 572     if(destlen==0)
 573         return srclen;
 574     for(i=0; i<min(srclen, destlen); i++)
 575         *dest++=(WCHAR)*src++;
 576     return min(srclen, destlen);
 577 }
 578 HANDLE WINAPI OpenFileMappingA(DWORD access, WIN_BOOL prot, LPCSTR name)
 579 {
 580     file_mapping* p;
 581     if(fm==0)
 582         return (HANDLE)0;
 583     if(name==0)
 584         return (HANDLE)0;
 585     for(p=fm; p; p=p->prev)
 586     {
 587         if(p->name==0)
 588             continue;
 589         if(strcmp(p->name, name)==0)
 590             return (HANDLE)p->handle;
 591     }
 592     return 0;
 593 }