584 lines
19 KiB
C
584 lines
19 KiB
C
/*
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* DLL imports support
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*
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* Copyright 2000 Alexandre Julliard
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* 2000 Eric Pouech
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "config.h"
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#include "winnt.h"
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#include "build.h"
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struct import
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{
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char *dll; /* dll name */
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int delay; /* delay or not dll loading ? */
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char **exports; /* functions exported from this dll */
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int nb_exports; /* number of exported functions */
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char **imports; /* functions we want to import from this dll */
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int nb_imports; /* number of imported functions */
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int lineno; /* line in .spec file where import is defined */
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};
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static char **undef_symbols; /* list of undefined symbols */
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static int nb_undef_symbols = -1;
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static int undef_size;
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static char **ignore_symbols; /* list of symbols to ignore */
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static int nb_ignore_symbols;
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static int ignore_size;
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static struct import **dll_imports = NULL;
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static int nb_imports = 0; /* number of imported dlls (delayed or not) */
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static int nb_delayed = 0; /* number of delayed dlls */
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static int total_imports = 0; /* total number of imported functions */
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static int total_delayed = 0; /* total number of imported functions in delayed DLLs */
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/* compare function names; helper for resolve_imports */
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static int name_cmp( const void *name, const void *entry )
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{
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return strcmp( *(char **)name, *(char **)entry );
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}
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/* locate a symbol in a (sorted) list */
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inline static const char *find_symbol( const char *name, char **table, int size )
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{
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char **res = NULL;
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if (table) {
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res = bsearch( &name, table, size, sizeof(*table), name_cmp );
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}
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return res ? *res : NULL;
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}
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/* sort a symbol table */
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inline static void sort_symbols( char **table, int size )
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{
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qsort( table, size, sizeof(*table), name_cmp );
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}
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/* open the .so library for a given dll in a specified path */
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static char *try_library_path( const char *path, const char *name )
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{
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char *buffer, *p;
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int fd;
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buffer = xmalloc( strlen(path) + strlen(name) + 8 );
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sprintf( buffer, "%s/lib%s", path, name );
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p = buffer + strlen(buffer) - 4;
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if (!strcmp( p, ".dll" )) *p = 0;
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strcat( buffer, ".so" );
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/* check if the file exists */
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if ((fd = open( buffer, O_RDONLY )) == -1) return NULL;
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close( fd );
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return buffer;
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}
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/* open the .so library for a given dll */
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static char *open_library( const char *name )
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{
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char *fullname;
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int i;
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for (i = 0; i < nb_lib_paths; i++)
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{
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if ((fullname = try_library_path( lib_path[i], name ))) return fullname;
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}
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if (!(fullname = try_library_path( ".", name )))
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fatal_error( "could not open .so file for %s\n", name );
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return fullname;
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}
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/* read in the list of exported symbols of a .so */
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static void read_exported_symbols( const char *name, struct import *imp )
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{
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FILE *f;
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char buffer[1024];
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char *fullname, *cmdline;
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const char *ext;
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int size, err;
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imp->exports = NULL;
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imp->nb_exports = size = 0;
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if (!(ext = strrchr( name, '.' ))) ext = name + strlen(name);
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if (!(fullname = open_library( name ))) return;
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cmdline = xmalloc( strlen(fullname) + 4 );
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sprintf( cmdline, "nm %s", fullname );
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free( fullname );
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if (!(f = popen( cmdline, "r" )))
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fatal_error( "Cannot execute '%s'\n", cmdline );
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while (fgets( buffer, sizeof(buffer), f ))
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{
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char *p = buffer + strlen(buffer) - 1;
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if (p < buffer) continue;
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if (*p == '\n') *p-- = 0;
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if (!(p = strstr( buffer, "__wine_dllexport_" ))) continue;
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p += 17;
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if (strncmp( p, name, ext - name )) continue;
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p += ext - name;
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if (*p++ != '_') continue;
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if (imp->nb_exports == size)
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{
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size += 128;
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imp->exports = xrealloc( imp->exports, size * sizeof(*imp->exports) );
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}
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imp->exports[imp->nb_exports++] = xstrdup( p );
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}
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if ((err = pclose( f ))) fatal_error( "%s error %d\n", cmdline, err );
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free( cmdline );
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sort_symbols( imp->exports, imp->nb_exports );
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}
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/* add a dll to the list of imports */
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void add_import_dll( const char *name, int delay )
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{
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struct import *imp = xmalloc( sizeof(*imp) );
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imp->dll = xstrdup( name );
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imp->delay = delay;
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imp->imports = NULL;
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imp->nb_imports = 0;
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/* GetToken for the file name has swallowed the '\n', hence pointing to next line */
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imp->lineno = current_line - 1;
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if (delay) nb_delayed++;
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read_exported_symbols( name, imp );
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dll_imports = xrealloc( dll_imports, (nb_imports+1) * sizeof(*dll_imports) );
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dll_imports[nb_imports++] = imp;
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}
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/* Add a symbol to the ignored symbol list */
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void add_ignore_symbol( const char *name )
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{
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if (nb_ignore_symbols == ignore_size)
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{
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ignore_size += 32;
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ignore_symbols = xrealloc( ignore_symbols, ignore_size * sizeof(*ignore_symbols) );
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}
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ignore_symbols[nb_ignore_symbols++] = xstrdup( name );
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}
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/* add a function to the list of imports from a given dll */
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static void add_import_func( struct import *imp, const char *name )
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{
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imp->imports = xrealloc( imp->imports, (imp->nb_imports+1) * sizeof(*imp->imports) );
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imp->imports[imp->nb_imports++] = xstrdup( name );
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total_imports++;
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if (imp->delay) total_delayed++;
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}
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/* add a symbol to the undef list */
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inline static void add_undef_symbol( const char *name )
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{
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if (nb_undef_symbols == undef_size)
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{
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undef_size += 128;
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undef_symbols = xrealloc( undef_symbols, undef_size * sizeof(*undef_symbols) );
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}
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undef_symbols[nb_undef_symbols++] = xstrdup( name );
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}
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/* remove all the holes in the undefined symbol list; return the number of removed symbols */
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static int remove_symbol_holes(void)
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{
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int i, off;
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for (i = off = 0; i < nb_undef_symbols; i++)
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{
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if (!undef_symbols[i]) off++;
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else undef_symbols[i - off] = undef_symbols[i];
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}
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nb_undef_symbols -= off;
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return off;
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}
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/* add the extra undefined symbols that will be contained in the generated spec file itself */
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static void add_extra_undef_symbols(void)
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{
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const char *extras[8];
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int i, count = 0;
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#define ADD_SYM(name) \
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do { if (!find_symbol( extras[count] = (name), undef_symbols, \
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nb_undef_symbols )) count++; } while(0)
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sort_symbols( undef_symbols, nb_undef_symbols );
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/* add symbols that will be contained in the spec file itself */
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switch (SpecMode)
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{
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case SPEC_MODE_DLL:
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break;
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case SPEC_MODE_GUIEXE:
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ADD_SYM( "GetCommandLineA" );
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ADD_SYM( "GetStartupInfoA" );
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ADD_SYM( "GetModuleHandleA" );
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/* fall through */
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case SPEC_MODE_CUIEXE:
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ADD_SYM( "__wine_get_main_args" );
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ADD_SYM( "ExitProcess" );
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break;
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case SPEC_MODE_GUIEXE_UNICODE:
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ADD_SYM( "GetCommandLineA" );
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ADD_SYM( "GetStartupInfoA" );
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ADD_SYM( "GetModuleHandleA" );
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/* fall through */
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case SPEC_MODE_CUIEXE_UNICODE:
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ADD_SYM( "__wine_get_wmain_args" );
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ADD_SYM( "ExitProcess" );
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break;
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}
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ADD_SYM( "RtlRaiseException" );
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if (nb_delayed)
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{
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ADD_SYM( "LoadLibraryA" );
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ADD_SYM( "GetProcAddress" );
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}
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if (count)
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{
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for (i = 0; i < count; i++) add_undef_symbol( extras[i] );
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sort_symbols( undef_symbols, nb_undef_symbols );
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}
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}
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/* warn if a given dll is not used, but check forwards first */
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static void warn_unused( const struct import* imp )
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{
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int i, curline;
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size_t len = strlen(imp->dll);
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const char *p = strchr( imp->dll, '.' );
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if (p && !strcasecmp( p, ".dll" )) len = p - imp->dll;
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for (i = Base; i <= Limit; i++)
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{
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ORDDEF *odp = Ordinals[i];
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if (!odp || odp->type != TYPE_FORWARD) continue;
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if (!strncasecmp( odp->link_name, imp->dll, len ) &&
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odp->link_name[len] == '.')
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return; /* found an import, do not warn */
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}
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/* switch current_line temporarily to the line of the import declaration */
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curline = current_line;
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current_line = imp->lineno;
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warning( "%s imported but no symbols used\n", imp->dll );
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current_line = curline;
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}
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/* read in the list of undefined symbols */
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void read_undef_symbols( const char *name )
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{
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FILE *f;
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char buffer[1024];
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int err;
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undef_size = nb_undef_symbols = 0;
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sprintf( buffer, "nm -u %s", name );
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if (!(f = popen( buffer, "r" )))
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fatal_error( "Cannot execute '%s'\n", buffer );
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while (fgets( buffer, sizeof(buffer), f ))
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{
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char *p = buffer + strlen(buffer) - 1;
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if (p < buffer) continue;
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if (*p == '\n') *p-- = 0;
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add_undef_symbol( buffer );
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}
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if ((err = pclose( f ))) fatal_error( "nm -u %s error %d\n", name, err );
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}
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static void remove_ignored_symbols(void)
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{
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int i;
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sort_symbols( ignore_symbols, nb_ignore_symbols );
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for (i = 0; i < nb_undef_symbols; i++)
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{
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if (find_symbol( undef_symbols[i], ignore_symbols, nb_ignore_symbols ))
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{
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free( undef_symbols[i] );
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undef_symbols[i] = NULL;
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}
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}
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remove_symbol_holes();
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}
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/* resolve the imports for a Win32 module */
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int resolve_imports( FILE *outfile )
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{
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int i, j;
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if (nb_undef_symbols == -1) return 0; /* no symbol file specified */
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add_extra_undef_symbols();
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remove_ignored_symbols();
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for (i = 0; i < nb_imports; i++)
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{
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struct import *imp = dll_imports[i];
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for (j = 0; j < nb_undef_symbols; j++)
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{
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const char *res = find_symbol( undef_symbols[j], imp->exports, imp->nb_exports );
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if (res)
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{
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add_import_func( imp, res );
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free( undef_symbols[j] );
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undef_symbols[j] = NULL;
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}
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}
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/* remove all the holes in the undef symbols list */
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if (!remove_symbol_holes()) warn_unused( imp );
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}
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return 1;
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}
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/* output the import table of a Win32 module */
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static int output_immediate_imports( FILE *outfile )
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{
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int i, j, pos;
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int nb_imm = nb_imports - nb_delayed;
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if (!nb_imm) goto done;
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/* main import header */
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fprintf( outfile, "\nstatic struct {\n" );
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fprintf( outfile, " struct {\n" );
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fprintf( outfile, " void *OriginalFirstThunk;\n" );
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fprintf( outfile, " unsigned int TimeDateStamp;\n" );
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fprintf( outfile, " unsigned int ForwarderChain;\n" );
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fprintf( outfile, " const char *Name;\n" );
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fprintf( outfile, " void *FirstThunk;\n" );
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fprintf( outfile, " } imp[%d];\n", nb_imm+1 );
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fprintf( outfile, " const char *data[%d];\n",
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total_imports - total_delayed + nb_imm );
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fprintf( outfile, "} imports = {\n {\n" );
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/* list of dlls */
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for (i = j = 0; i < nb_imports; i++)
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{
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if (dll_imports[i]->delay) continue;
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fprintf( outfile, " { 0, 0, 0, \"%s\", &imports.data[%d] },\n",
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dll_imports[i]->dll, j );
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j += dll_imports[i]->nb_imports + 1;
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}
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fprintf( outfile, " { 0, 0, 0, 0, 0 },\n" );
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fprintf( outfile, " },\n {\n" );
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/* list of imported functions */
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for (i = 0; i < nb_imports; i++)
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{
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if (dll_imports[i]->delay) continue;
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fprintf( outfile, " /* %s */\n", dll_imports[i]->dll );
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for (j = 0; j < dll_imports[i]->nb_imports; j++)
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fprintf( outfile, " \"\\0\\0%s\",\n", dll_imports[i]->imports[j] );
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fprintf( outfile, " 0,\n" );
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}
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fprintf( outfile, " }\n};\n\n" );
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/* thunks for imported functions */
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fprintf( outfile, "#ifndef __GNUC__\nstatic void __asm__dummy_import(void) {\n#endif\n\n" );
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pos = 20 * (nb_imm + 1); /* offset of imports.data from start of imports */
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fprintf( outfile, "asm(\".align 8\\n\"\n" );
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for (i = 0; i < nb_imports; i++)
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{
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if (dll_imports[i]->delay) continue;
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for (j = 0; j < dll_imports[i]->nb_imports; j++, pos += 4)
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{
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fprintf( outfile, " \"\\t" __ASM_FUNC("%s") "\\n\"\n",
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dll_imports[i]->imports[j] );
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fprintf( outfile, " \"\\t.globl " PREFIX "%s\\n\"\n",
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dll_imports[i]->imports[j] );
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fprintf( outfile, " \"" PREFIX "%s:\\t", dll_imports[i]->imports[j] );
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if (strstr( dll_imports[i]->imports[j], "__wine_call_from_16" ))
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fprintf( outfile, ".byte 0x2e\\n\\tjmp *(imports+%d)\\n\\tnop\\n\"\n", pos );
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else
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fprintf( outfile, "jmp *(imports+%d)\\n\\tmovl %%esi,%%esi\\n\"\n", pos );
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}
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pos += 4;
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}
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fprintf( outfile, ");\n#ifndef __GNUC__\n}\n#endif\n\n" );
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done:
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return nb_imm;
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}
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|
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/* output the delayed import table of a Win32 module */
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static int output_delayed_imports( FILE *outfile )
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{
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int i, idx, j, pos;
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if (!nb_delayed) goto done;
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for (i = 0; i < nb_imports; i++)
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{
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if (!dll_imports[i]->delay) continue;
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fprintf( outfile, "static void *__wine_delay_imp_%d_hmod;\n", i);
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for (j = 0; j < dll_imports[i]->nb_imports; j++)
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{
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fprintf( outfile, "void __wine_delay_imp_%d_%s();\n",
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i, dll_imports[i]->imports[j] );
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}
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}
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fprintf( outfile, "\n" );
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fprintf( outfile, "static struct {\n" );
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fprintf( outfile, " struct ImgDelayDescr {\n" );
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fprintf( outfile, " unsigned int grAttrs;\n" );
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fprintf( outfile, " const char *szName;\n" );
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fprintf( outfile, " void **phmod;\n" );
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fprintf( outfile, " void **pIAT;\n" );
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fprintf( outfile, " const char **pINT;\n" );
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fprintf( outfile, " void* pBoundIAT;\n" );
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fprintf( outfile, " void* pUnloadIAT;\n" );
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fprintf( outfile, " unsigned long dwTimeStamp;\n" );
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fprintf( outfile, " } imp[%d];\n", nb_delayed );
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fprintf( outfile, " void *IAT[%d];\n", total_delayed );
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fprintf( outfile, " const char *INT[%d];\n", total_delayed );
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fprintf( outfile, "} delay_imports = {\n" );
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fprintf( outfile, " {\n" );
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for (i = j = 0; i < nb_imports; i++)
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{
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if (!dll_imports[i]->delay) continue;
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fprintf( outfile, " { 0, \"%s\", &__wine_delay_imp_%d_hmod, &delay_imports.IAT[%d], &delay_imports.INT[%d], 0, 0, 0 },\n",
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dll_imports[i]->dll, i, j, j );
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j += dll_imports[i]->nb_imports;
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}
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fprintf( outfile, " },\n {\n" );
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for (i = 0; i < nb_imports; i++)
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{
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if (!dll_imports[i]->delay) continue;
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fprintf( outfile, " /* %s */\n", dll_imports[i]->dll );
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for (j = 0; j < dll_imports[i]->nb_imports; j++)
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{
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fprintf( outfile, " &__wine_delay_imp_%d_%s,\n", i, dll_imports[i]->imports[j] );
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}
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}
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fprintf( outfile, " },\n {\n" );
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for (i = 0; i < nb_imports; i++)
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{
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if (!dll_imports[i]->delay) continue;
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|
fprintf( outfile, " /* %s */\n", dll_imports[i]->dll );
|
|
for (j = 0; j < dll_imports[i]->nb_imports; j++)
|
|
{
|
|
fprintf( outfile, " \"\\0\\0%s\",\n", dll_imports[i]->imports[j] );
|
|
}
|
|
}
|
|
fprintf( outfile, " }\n};\n\n" );
|
|
|
|
/* check if there's some stub defined. if so, exception struct
|
|
* is already defined, so don't emit it twice
|
|
*/
|
|
for (i = 0; i < nb_entry_points; i++) if (EntryPoints[i]->type == TYPE_STUB) break;
|
|
|
|
if (i == nb_entry_points) {
|
|
fprintf( outfile, "struct exc_record {\n" );
|
|
fprintf( outfile, " unsigned int code, flags;\n" );
|
|
fprintf( outfile, " void *rec, *addr;\n" );
|
|
fprintf( outfile, " unsigned int params;\n" );
|
|
fprintf( outfile, " const void *info[15];\n" );
|
|
fprintf( outfile, "};\n\n" );
|
|
fprintf( outfile, "extern void __stdcall RtlRaiseException( struct exc_record * );\n" );
|
|
}
|
|
|
|
fprintf( outfile, "extern void * __stdcall LoadLibraryA(const char*);\n");
|
|
fprintf( outfile, "extern void * __stdcall GetProcAddress(void *, const char*);\n");
|
|
fprintf( outfile, "\n" );
|
|
|
|
fprintf( outfile, "void *__stdcall __wine_delay_load(struct ImgDelayDescr* imd, void **pIAT)\n" );
|
|
fprintf( outfile, "{\n" );
|
|
fprintf( outfile, " int idx = pIAT - imd->pIAT;\n" );
|
|
fprintf( outfile, " const char** pINT = imd->pINT + idx;\n" );
|
|
fprintf( outfile, " void *fn;\n\n" );
|
|
|
|
fprintf( outfile, " if (!*imd->phmod) *imd->phmod = LoadLibraryA(imd->szName);\n" );
|
|
fprintf( outfile, " if (*imd->phmod && (fn = GetProcAddress(*imd->phmod, *pINT + 2)))\n");
|
|
fprintf( outfile, " /* patch IAT with final value */\n" );
|
|
fprintf( outfile, " return *pIAT = fn;\n" );
|
|
fprintf( outfile, " else {\n");
|
|
fprintf( outfile, " struct exc_record rec;\n" );
|
|
fprintf( outfile, " rec.code = 0x80000100;\n" );
|
|
fprintf( outfile, " rec.flags = 1;\n" );
|
|
fprintf( outfile, " rec.rec = 0;\n" );
|
|
fprintf( outfile, " rec.params = 2;\n" );
|
|
fprintf( outfile, " rec.info[0] = imd->szName;\n" );
|
|
fprintf( outfile, " rec.info[1] = *pINT + 2;\n" );
|
|
fprintf( outfile, "#ifdef __GNUC__\n" );
|
|
fprintf( outfile, " rec.addr = __builtin_return_address(1);\n" );
|
|
fprintf( outfile, "#else\n" );
|
|
fprintf( outfile, " rec.addr = 0;\n" );
|
|
fprintf( outfile, "#endif\n" );
|
|
fprintf( outfile, " for (;;) RtlRaiseException( &rec );\n" );
|
|
fprintf( outfile, " return 0; /* shouldn't go here */\n" );
|
|
fprintf( outfile, " }\n}\n\n" );
|
|
|
|
fprintf( outfile, "#ifndef __GNUC__\n" );
|
|
fprintf( outfile, "static void __asm__dummy_delay_import(void) {\n" );
|
|
fprintf( outfile, "#endif\n" );
|
|
fprintf( outfile, "asm(\".align 8\\n\"\n" );
|
|
pos = nb_delayed * 32;
|
|
for (i = idx = 0; i < nb_imports; i++)
|
|
{
|
|
char buffer[128];
|
|
|
|
if (!dll_imports[i]->delay) continue;
|
|
|
|
sprintf(buffer, "__wine_dl_%d", i);
|
|
fprintf( outfile, " \"\\t" __ASM_FUNC("%s") "\\n\"\n", buffer );
|
|
fprintf( outfile, " \"" PREFIX "%s:\\t", buffer );
|
|
fprintf( outfile, "push $delay_imports+%d\\n\"\n", idx * 32 );
|
|
fprintf( outfile, " \"\\tcall __wine_delay_load\\n\"\n" );
|
|
fprintf( outfile, " \"\\tpop %%edx\\n\\tpop %%ecx\\n\\tjmp *%%eax\\n\"\n" );
|
|
|
|
for (j = 0; j < dll_imports[i]->nb_imports; j++, pos += 4)
|
|
{
|
|
fprintf( outfile, " \"\\t" __ASM_FUNC("%s") "\\n\"\n",
|
|
dll_imports[i]->imports[j] );
|
|
fprintf( outfile, " \"\\t.globl " PREFIX "%s\\n\"\n",
|
|
dll_imports[i]->imports[j] );
|
|
fprintf( outfile, " \"" PREFIX "%s:\\t", dll_imports[i]->imports[j] );
|
|
fprintf( outfile, "jmp *(delay_imports+%d)\\n\\tmovl %%esi,%%esi\\n\"\n", pos );
|
|
|
|
sprintf( buffer, "__wine_delay_imp_%d_%s", i, dll_imports[i]->imports[j]);
|
|
fprintf( outfile, " \"\\t" __ASM_FUNC("%s") "\\n\"\n", buffer );
|
|
fprintf( outfile, " \"" PREFIX "%s:\\t", buffer );
|
|
fprintf( outfile, "push %%ecx\\n\\tpush %%edx\\n\"\n" );
|
|
fprintf( outfile, " \"\\tpush $delay_imports+%d\\n\"\n", pos );
|
|
fprintf( outfile, " \"\\tjmp __wine_dl_%d\\n\"\n", i );
|
|
}
|
|
idx++;
|
|
}
|
|
|
|
fprintf( outfile, ");\n" );
|
|
fprintf( outfile, "#ifndef __GNUC__\n" );
|
|
fprintf( outfile, "}\n" );
|
|
fprintf( outfile, "#endif\n" );
|
|
fprintf( outfile, "\n" );
|
|
|
|
done:
|
|
return nb_delayed;
|
|
}
|
|
|
|
/* output the import and delayed import tables of a Win32 module
|
|
* returns number of DLLs exported in 'immediate' mode
|
|
*/
|
|
int output_imports( FILE *outfile )
|
|
{
|
|
output_delayed_imports( outfile );
|
|
return output_immediate_imports( outfile );
|
|
}
|