/* * DLL imports support * * Copyright 2000, 2004 Alexandre Julliard * Copyright 2000 Eric Pouech * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #ifdef HAVE_SYS_STAT_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #include "wine/list.h" #include "build.h" /* standard C functions that are also exported from ntdll */ static const char *stdc_names[] = { "abs", "atan", "atoi", "atol", "bsearch", "ceil", "cos", "fabs", "floor", "isalnum", "isalpha", "iscntrl", "isdigit", "isgraph", "islower", "isprint", "ispunct", "isspace", "isupper", "iswalpha", "iswctype", "iswdigit", "iswlower", "iswspace", "iswxdigit", "isxdigit", "labs", "log", "mbstowcs", "memchr", "memcmp", "memcpy", "memmove", "memset", "pow", "qsort", "sin", "sprintf", "sqrt", "sscanf", "strcat", "strchr", "strcmp", "strcpy", "strcspn", "strlen", "strncat", "strncmp", "strncpy", "strnlen", "strpbrk", "strrchr", "strspn", "strstr", "strtol", "strtoul", "swprintf", "tan", "tolower", "toupper", "towlower", "towupper", "vsprintf", "wcscat", "wcschr", "wcscmp", "wcscpy", "wcscspn", "wcslen", "wcsncat", "wcsncmp", "wcsncpy", "wcspbrk", "wcsrchr", "wcsspn", "wcsstr", "wcstok", "wcstol", "wcstombs", "wcstoul" }; static struct strarray stdc_functions = { stdc_names, ARRAY_SIZE(stdc_names), ARRAY_SIZE(stdc_names) }; struct import_func { const char *name; const char *export_name; int ordinal; int hint; }; struct import { struct list entry; /* entry in global dll list */ char *dll_name; /* exported file name of the dll */ char *c_name; /* dll name as a C-compatible identifier */ char *full_name; /* full name of the input file */ dev_t dev; /* device/inode of the input file */ ino_t ino; ORDDEF **exports; /* functions exported from this dll */ int nb_exports; /* number of exported functions */ struct import_func *imports; /* functions we want to import from this dll */ int nb_imports; /* number of imported functions */ int max_imports; /* size of imports array */ }; static struct strarray undef_symbols; /* list of undefined symbols */ static struct strarray extra_ld_symbols; /* list of extra symbols that ld should resolve */ static struct strarray delayed_imports; /* list of delayed import dlls */ static struct strarray ext_link_imports; /* list of external symbols to link to */ static struct list dll_imports = LIST_INIT( dll_imports ); static struct list dll_delayed = LIST_INIT( dll_delayed ); static struct strarray as_files; static const char import_func_prefix[] = "__wine$func$"; static const char import_ord_prefix[] = "__wine$ord$"; static inline const char *ppc_reg( int reg ) { static const char * const ppc_regs[32] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10","r11","r12","r13","r14","r15", "r16","r17","r18","r19","r20","r21","r22","r23", "r24","r25","r26","r27","r28","r29","r30","r31" }; if (target_platform == PLATFORM_APPLE) return ppc_regs[reg]; return ppc_regs[reg] + 1; /* skip the 'r' */ } /* compare function names; helper for resolve_imports */ static int name_cmp( const void *name, const void *entry ) { return strcmp( *(const char* const *)name, *(const char* const *)entry ); } /* compare function names; helper for resolve_imports */ static int func_cmp( const void *func1, const void *func2 ) { const ORDDEF *odp1 = *(const ORDDEF * const *)func1; const ORDDEF *odp2 = *(const ORDDEF * const *)func2; return strcmp( odp1->name ? odp1->name : odp1->export_name, odp2->name ? odp2->name : odp2->export_name ); } /* remove a name from a name table */ static inline void remove_name( struct strarray *table, unsigned int idx ) { assert( idx < table->count ); memmove( table->str + idx, table->str + idx + 1, (table->count - idx - 1) * sizeof(*table->str) ); table->count--; } /* locate a name in a (sorted) list */ static inline const char *find_name( const char *name, const struct strarray *table ) { char **res = NULL; if (table->count) res = bsearch( &name, table->str, table->count, sizeof(*table->str), name_cmp ); return res ? *res : NULL; } /* sort a name table */ static inline void sort_names( struct strarray *table ) { if (table->count) qsort( table->str, table->count, sizeof(*table->str), name_cmp ); } /* locate an export in a (sorted) export list */ static inline ORDDEF *find_export( const char *name, ORDDEF **table, int size ) { ORDDEF func, *odp, **res = NULL; func.name = xstrdup(name); func.ordinal = -1; odp = &func; if (table) res = bsearch( &odp, table, size, sizeof(*table), func_cmp ); free( func.name ); return res ? *res : NULL; } /* free an import structure */ static void free_imports( struct import *imp ) { free( imp->exports ); free( imp->imports ); free( imp->dll_name ); free( imp->c_name ); free( imp->full_name ); free( imp ); } /* check whether a given dll is imported in delayed mode */ static int is_delayed_import( const char *name ) { unsigned int i; for (i = 0; i < delayed_imports.count; i++) { if (!strcmp( delayed_imports.str[i], name )) return 1; } return 0; } /* find an imported dll from its name */ static struct import *find_import_dll( const char *name ) { struct import *import; LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) if (!strcasecmp( import->dll_name, name )) return import; LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) if (!strcasecmp( import->dll_name, name )) return import; return NULL; } /* open the .so library for a given dll in a specified path */ static char *try_library_path( const char *path, const char *name ) { char *buffer; int fd; buffer = strmake( "%s/lib%s.def", path, name ); /* check if the file exists */ if ((fd = open( buffer, O_RDONLY )) != -1) { close( fd ); return buffer; } free( buffer ); return NULL; } /* find the .def import library for a given dll */ static char *find_library( const char *name ) { char *fullname; unsigned int i; for (i = 0; i < lib_path.count; i++) { if ((fullname = try_library_path( lib_path.str[i], name ))) return fullname; } fatal_error( "could not open .def file for %s\n", name ); return NULL; } /* read in the list of exported symbols of an import library */ static DLLSPEC *read_import_lib( struct import *imp ) { FILE *f; int i; struct stat stat; struct import *prev_imp; DLLSPEC *spec = alloc_dll_spec(); f = open_input_file( NULL, imp->full_name ); fstat( fileno(f), &stat ); imp->dev = stat.st_dev; imp->ino = stat.st_ino; if (!parse_def_file( f, spec )) exit( 1 ); close_input_file( f ); /* check if we already imported that library from a different file */ if ((prev_imp = find_import_dll( spec->file_name ))) { if (prev_imp->dev != imp->dev || prev_imp->ino != imp->ino) fatal_error( "%s and %s have the same export name '%s'\n", prev_imp->full_name, imp->full_name, spec->file_name ); free_dll_spec( spec ); return NULL; /* the same file was already loaded, ignore this one */ } if (spec->nb_entry_points) { imp->exports = xmalloc( spec->nb_entry_points * sizeof(*imp->exports) ); for (i = 0; i < spec->nb_entry_points; i++) imp->exports[imp->nb_exports++] = &spec->entry_points[i]; qsort( imp->exports, imp->nb_exports, sizeof(*imp->exports), func_cmp ); } return spec; } /* build the dll exported name from the import lib name or path */ static char *get_dll_name( const char *name, const char *filename ) { char *ret; if (filename) { const char *basename = strrchr( filename, '/' ); if (!basename) basename = filename; else basename++; if (!strncmp( basename, "lib", 3 )) basename += 3; ret = xmalloc( strlen(basename) + 5 ); strcpy( ret, basename ); if (strendswith( ret, ".def" )) ret[strlen(ret)-4] = 0; } else { ret = xmalloc( strlen(name) + 5 ); strcpy( ret, name ); } if (!strchr( ret, '.' )) strcat( ret, ".dll" ); return ret; } /* add a dll to the list of imports */ void add_import_dll( const char *name, const char *filename ) { DLLSPEC *spec; char *dll_name = get_dll_name( name, filename ); struct import *imp = xmalloc( sizeof(*imp) ); memset( imp, 0, sizeof(*imp) ); if (filename) imp->full_name = xstrdup( filename ); else imp->full_name = find_library( name ); if (!(spec = read_import_lib( imp ))) { free_imports( imp ); return; } imp->dll_name = spec->file_name ? spec->file_name : dll_name; imp->c_name = make_c_identifier( imp->dll_name ); if (is_delayed_import( imp->dll_name )) list_add_tail( &dll_delayed, &imp->entry ); else list_add_tail( &dll_imports, &imp->entry ); } /* add a library to the list of delayed imports */ void add_delayed_import( const char *name ) { struct import *imp; char *fullname = get_dll_name( name, NULL ); strarray_add( &delayed_imports, fullname, NULL ); if ((imp = find_import_dll( fullname ))) { list_remove( &imp->entry ); list_add_tail( &dll_delayed, &imp->entry ); } } /* add a symbol to the list of extra symbols that ld must resolve */ void add_extra_ld_symbol( const char *name ) { strarray_add( &extra_ld_symbols, name, NULL ); } /* retrieve an imported dll, adding one if necessary */ struct import *add_static_import_dll( const char *name ) { struct import *import; char *dll_name = get_dll_name( name, NULL ); if ((import = find_import_dll( dll_name ))) return import; import = xmalloc( sizeof(*import) ); memset( import, 0, sizeof(*import) ); import->dll_name = dll_name; import->full_name = xstrdup( dll_name ); import->c_name = make_c_identifier( dll_name ); if (is_delayed_import( dll_name )) list_add_tail( &dll_delayed, &import->entry ); else list_add_tail( &dll_imports, &import->entry ); return import; } /* add a function to the list of imports from a given dll */ static void add_import_func( struct import *imp, const char *name, const char *export_name, int ordinal, int hint ) { if (imp->nb_imports == imp->max_imports) { imp->max_imports *= 2; if (imp->max_imports < 32) imp->max_imports = 32; imp->imports = xrealloc( imp->imports, imp->max_imports * sizeof(*imp->imports) ); } imp->imports[imp->nb_imports].name = name; imp->imports[imp->nb_imports].export_name = export_name; imp->imports[imp->nb_imports].ordinal = ordinal; imp->imports[imp->nb_imports].hint = hint; imp->nb_imports++; } /* add an import for an undefined function of the form __wine$func$ */ static void add_undef_import( const char *name, int is_ordinal ) { char *p, *dll_name = xstrdup( name ); int ordinal = 0; struct import *import; if (!(p = strchr( dll_name, '$' ))) return; *p++ = 0; while (*p >= '0' && *p <= '9') ordinal = 10 * ordinal + *p++ - '0'; if (*p != '$') return; p++; import = add_static_import_dll( dll_name ); if (is_ordinal) add_import_func( import, NULL, xstrdup( p ), ordinal, 0 ); else add_import_func( import, xstrdup( p ), NULL, ordinal, 0 ); } /* check if the spec file exports any stubs */ static int has_stubs( const DLLSPEC *spec ) { int i; if (unix_lib) return 0; for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (odp->type == TYPE_STUB) return 1; } return 0; } /* add the extra undefined symbols that will be contained in the generated spec file itself */ static void add_extra_undef_symbols( DLLSPEC *spec ) { add_extra_ld_symbol( spec->init_func ); if (has_stubs( spec )) add_extra_ld_symbol( "__wine_spec_unimplemented_stub" ); if (delayed_imports.count) add_extra_ld_symbol( "__wine_spec_delay_load" ); } /* check if a given imported dll is not needed, taking forwards into account */ static int check_unused( const struct import* imp, const DLLSPEC *spec ) { int i; const char *file_name = imp->dll_name; size_t len = strlen( file_name ); const char *p = strchr( file_name, '.' ); if (p && !strcasecmp( p, ".dll" )) len = p - file_name; for (i = spec->base; i <= spec->limit; i++) { ORDDEF *odp = spec->ordinals[i]; if (!odp || !(odp->flags & FLAG_FORWARD)) continue; if (!strncasecmp( odp->link_name, file_name, len ) && odp->link_name[len] == '.') return 0; /* found a forward, it is used */ } return 1; } /* check if a given forward does exist in one of the imported dlls */ static void check_undefined_forwards( DLLSPEC *spec ) { struct import *imp; char *link_name, *api_name, *dll_name, *p; int i; if (unix_lib) return; for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (!(odp->flags & FLAG_FORWARD)) continue; link_name = xstrdup( odp->link_name ); p = strrchr( link_name, '.' ); *p = 0; api_name = p + 1; dll_name = get_dll_name( link_name, NULL ); if ((imp = find_import_dll( dll_name ))) { if (!find_export( api_name, imp->exports, imp->nb_exports )) warning( "%s:%d: forward '%s' not found in %s\n", spec->src_name, odp->lineno, odp->link_name, imp->dll_name ); } else warning( "%s:%d: forward '%s' not found in the imported dll list\n", spec->src_name, odp->lineno, odp->link_name ); free( link_name ); free( dll_name ); } } /* flag the dll exports that link to an undefined symbol */ static void check_undefined_exports( DLLSPEC *spec ) { int i; if (unix_lib) return; for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (odp->type == TYPE_STUB || odp->type == TYPE_ABS || odp->type == TYPE_VARIABLE) continue; if (odp->flags & FLAG_FORWARD) continue; if (odp->flags & FLAG_SYSCALL) continue; if (find_name( odp->link_name, &undef_symbols )) { switch(odp->type) { case TYPE_PASCAL: case TYPE_STDCALL: case TYPE_CDECL: case TYPE_VARARGS: if (link_ext_symbols) { odp->flags |= FLAG_EXT_LINK; strarray_add( &ext_link_imports, odp->link_name, NULL ); } else error( "%s:%d: function '%s' not defined\n", spec->src_name, odp->lineno, odp->link_name ); break; default: if (!strcmp( odp->link_name, "__wine_syscall_dispatcher" )) break; error( "%s:%d: external symbol '%s' is not a function\n", spec->src_name, odp->lineno, odp->link_name ); break; } } } } /* create a .o file that references all the undefined symbols we want to resolve */ static char *create_undef_symbols_file( DLLSPEC *spec ) { char *as_file, *obj_file; int i; unsigned int j; if (unix_lib) return NULL; as_file = open_temp_output_file( ".s" ); output( "\t.data\n" ); for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (odp->type == TYPE_STUB || odp->type == TYPE_ABS || odp->type == TYPE_VARIABLE) continue; if (odp->flags & FLAG_FORWARD) continue; if (odp->flags & FLAG_SYSCALL) continue; output( "\t%s %s\n", get_asm_ptr_keyword(), asm_name( get_link_name( odp ))); } for (j = 0; j < extra_ld_symbols.count; j++) output( "\t%s %s\n", get_asm_ptr_keyword(), asm_name(extra_ld_symbols.str[j]) ); fclose( output_file ); obj_file = get_temp_file_name( output_file_name, ".o" ); assemble_file( as_file, obj_file ); return obj_file; } /* combine a list of object files with ld into a single object file */ /* returns the name of the combined file */ static const char *ldcombine_files( DLLSPEC *spec, char **argv ) { char *ld_tmp_file, *undef_file; struct strarray args = get_ld_command(); undef_file = create_undef_symbols_file( spec ); ld_tmp_file = get_temp_file_name( output_file_name, ".o" ); strarray_add( &args, "-r", "-o", ld_tmp_file, undef_file, NULL ); strarray_addv( &args, argv ); spawn( args ); return ld_tmp_file; } /* read in the list of undefined symbols */ void read_undef_symbols( DLLSPEC *spec, char **argv ) { size_t prefix_len; FILE *f; const char *prog = get_nm_command(); char *cmd, buffer[1024], name_prefix[16]; int err; const char *name; if (!argv[0]) return; add_extra_undef_symbols( spec ); strcpy( name_prefix, asm_name("") ); prefix_len = strlen( name_prefix ); name = ldcombine_files( spec, argv ); cmd = strmake( "%s -u %s", prog, name ); if (verbose) fprintf( stderr, "%s\n", cmd ); if (!(f = popen( cmd, "r" ))) fatal_error( "Cannot execute '%s'\n", cmd ); while (fgets( buffer, sizeof(buffer), f )) { char *p = buffer + strlen(buffer) - 1; if (p < buffer) continue; if (*p == '\n') *p-- = 0; p = buffer; while (*p == ' ') p++; if (p[0] == 'U' && p[1] == ' ' && p[2]) p += 2; if (prefix_len && !strncmp( p, name_prefix, prefix_len )) p += prefix_len; if (!strncmp( p, import_func_prefix, strlen(import_func_prefix) )) add_undef_import( p + strlen( import_func_prefix ), 0 ); else if (!strncmp( p, import_ord_prefix, strlen(import_ord_prefix) )) add_undef_import( p + strlen( import_ord_prefix ), 1 ); else if (use_msvcrt || !find_name( p, &stdc_functions )) strarray_add( &undef_symbols, xstrdup( p ), NULL ); } if ((err = pclose( f ))) warning( "%s failed with status %d\n", cmd, err ); free( cmd ); } void resolve_dll_imports( DLLSPEC *spec, struct list *list ) { unsigned int j; struct import *imp, *next; ORDDEF *odp; LIST_FOR_EACH_ENTRY_SAFE( imp, next, list, struct import, entry ) { for (j = 0; j < undef_symbols.count; j++) { odp = find_export( undef_symbols.str[j], imp->exports, imp->nb_exports ); if (odp) { if (odp->flags & FLAG_PRIVATE) continue; if (odp->type != TYPE_STDCALL && odp->type != TYPE_CDECL) warning( "winebuild: Data export '%s' cannot be imported from %s\n", odp->link_name, imp->dll_name ); else { add_import_func( imp, (odp->flags & FLAG_NONAME) ? NULL : odp->name, odp->export_name, odp->ordinal, odp->hint ); remove_name( &undef_symbols, j-- ); } } } if (!imp->nb_imports) { /* the dll is not used, get rid of it */ if (check_unused( imp, spec )) warning( "winebuild: %s imported but no symbols used\n", imp->dll_name ); list_remove( &imp->entry ); free_imports( imp ); } } } /* resolve the imports for a Win32 module */ void resolve_imports( DLLSPEC *spec ) { check_undefined_forwards( spec ); resolve_dll_imports( spec, &dll_imports ); resolve_dll_imports( spec, &dll_delayed ); sort_names( &undef_symbols ); check_undefined_exports( spec ); } /* check if symbol is still undefined */ int is_undefined( const char *name ) { return find_name( name, &undef_symbols ) != NULL; } /* output the get_pc thunk if needed */ void output_get_pc_thunk(void) { assert( target_cpu == CPU_x86 ); output( "\n\t.text\n" ); output( "\t.align %d\n", get_alignment(4) ); output( "\t%s\n", func_declaration("__wine_spec_get_pc_thunk_eax") ); output( "%s:\n", asm_name("__wine_spec_get_pc_thunk_eax") ); output_cfi( ".cfi_startproc" ); output( "\tmovl (%%esp),%%eax\n" ); output( "\tret\n" ); output_cfi( ".cfi_endproc" ); output_function_size( "__wine_spec_get_pc_thunk_eax" ); } /* output a single import thunk */ static void output_import_thunk( const char *name, const char *table, int pos ) { output( "\n\t.align %d\n", get_alignment(4) ); output( "\t%s\n", func_declaration(name) ); output( "%s\n", asm_globl(name) ); output_cfi( ".cfi_startproc" ); switch(target_cpu) { case CPU_x86: if (!UsePIC) { output( "\tjmp *(%s+%d)\n", table, pos ); } else { output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") ); output( "1:\tjmp *%s+%d-1b(%%eax)\n", table, pos ); needs_get_pc_thunk = 1; } break; case CPU_x86_64: output( "\tjmpq *%s+%d(%%rip)\n", table, pos ); break; case CPU_ARM: output( "\tldr IP,1f\n"); output( "\tldr PC,[PC,IP]\n" ); output( "1:\t.long %s+%u-(1b+4)\n", table, pos ); break; case CPU_ARM64: output( "\tadrp x9, %s\n", table ); output( "\tadd x9, x9, #:lo12:%s\n", table ); if (pos & 0xf000) output( "\tadd x9, x9, #%u\n", pos & 0xf000 ); if (pos & 0x0f00) output( "\tadd x9, x9, #%u\n", pos & 0x0f00 ); if (pos & 0x00f0) output( "\tadd x9, x9, #%u\n", pos & 0x00f0 ); if (pos & 0x000f) output( "\tadd x9, x9, #%u\n", pos & 0x000f ); output( "\tldur x9, [x9, #0]\n" ); output( "\tbr x9\n" ); break; case CPU_POWERPC: output( "\tmr %s, %s\n", ppc_reg(0), ppc_reg(31) ); if (target_platform == PLATFORM_APPLE) { output( "\tlis %s, ha16(%s+%d+32768)\n", ppc_reg(31), table, pos ); output( "\tla %s, lo16(%s+%d)(%s)\n", ppc_reg(31), table, pos, ppc_reg(31) ); } else { output( "\tlis %s, (%s+%d+32768)@h\n", ppc_reg(31), table, pos ); output( "\tla %s, (%s+%d)@l(%s)\n", ppc_reg(31), table, pos, ppc_reg(31) ); } output( "\tlwz %s, 0(%s)\n", ppc_reg(31), ppc_reg(31) ); output( "\tmtctr %s\n", ppc_reg(31) ); output( "\tmr %s, %s\n", ppc_reg(31), ppc_reg(0) ); output( "\tbctr\n" ); break; } output_cfi( ".cfi_endproc" ); output_function_size( name ); } /* check if we need an import directory */ int has_imports(void) { return !list_empty( &dll_imports ); } /* output the import table of a Win32 module */ static void output_immediate_imports(void) { int i, j; struct import *import; if (list_empty( &dll_imports )) return; /* no immediate imports */ /* main import header */ output( "\n/* import table */\n" ); output( "\n\t.data\n" ); output( "\t.align %d\n", get_alignment(4) ); output( ".L__wine_spec_imports:\n" ); /* list of dlls */ j = 0; LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) { output_rva( ".L__wine_spec_import_data_names + %d", j * get_ptr_size() ); /* OriginalFirstThunk */ output( "\t.long 0\n" ); /* TimeDateStamp */ output( "\t.long 0\n" ); /* ForwarderChain */ output_rva( ".L__wine_spec_import_name_%s", import->c_name ); /* Name */ output_rva( ".L__wine_spec_import_data_ptrs + %d", j * get_ptr_size() ); /* FirstThunk */ j += import->nb_imports + 1; } output( "\t.long 0\n" ); /* OriginalFirstThunk */ output( "\t.long 0\n" ); /* TimeDateStamp */ output( "\t.long 0\n" ); /* ForwarderChain */ output( "\t.long 0\n" ); /* Name */ output( "\t.long 0\n" ); /* FirstThunk */ output( "\n\t.align %d\n", get_alignment(get_ptr_size()) ); /* output the names twice, once for OriginalFirstThunk and once for FirstThunk */ for (i = 0; i < 2; i++) { output( ".L__wine_spec_import_data_%s:\n", i ? "ptrs" : "names" ); LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; if (i) { if (func->name) output( "__imp_%s:\n", asm_name( func->name )); else if (func->export_name) output( "__imp_%s:\n", asm_name( func->export_name )); } if (func->name) output( "\t%s .L__wine_spec_import_data_%s_%s-.L__wine_spec_rva_base\n", get_asm_ptr_keyword(), import->c_name, func->name ); else { if (get_ptr_size() == 8) output( "\t.quad 0x800000000000%04x\n", func->ordinal ); else output( "\t.long 0x8000%04x\n", func->ordinal ); } } output( "\t%s 0\n", get_asm_ptr_keyword() ); } } output( ".L__wine_spec_imports_end:\n" ); LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; if (!func->name) continue; output( "\t.align %d\n", get_alignment(2) ); output( ".L__wine_spec_import_data_%s_%s:\n", import->c_name, func->name ); output( "\t.short %d\n", func->hint ); output( "\t%s \"%s\"\n", get_asm_string_keyword(), func->name ); } } LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) { output( ".L__wine_spec_import_name_%s:\n\t%s \"%s\"\n", import->c_name, get_asm_string_keyword(), import->dll_name ); } } /* output the import thunks of a Win32 module */ static void output_immediate_import_thunks(void) { int j, pos; struct import *import; static const char import_thunks[] = "__wine_spec_import_thunks"; if (list_empty( &dll_imports )) return; output( "\n/* immediate import thunks */\n\n" ); output( "\t.text\n" ); output( "\t.align %d\n", get_alignment(8) ); output( "%s:\n", asm_name(import_thunks)); pos = 0; LIST_FOR_EACH_ENTRY( import, &dll_imports, struct import, entry ) { for (j = 0; j < import->nb_imports; j++, pos += get_ptr_size()) { struct import_func *func = &import->imports[j]; output_import_thunk( func->name ? func->name : func->export_name, ".L__wine_spec_import_data_ptrs", pos ); } pos += get_ptr_size(); } output_function_size( import_thunks ); } /* output the delayed import table of a Win32 module */ static void output_delayed_imports( const DLLSPEC *spec ) { int j, mod; struct import *import; if (list_empty( &dll_delayed )) return; output( "\n/* delayed imports */\n\n" ); output( "\t.data\n" ); output( "\t.align %d\n", get_alignment(get_ptr_size()) ); output( "%s\n", asm_globl("__wine_spec_delay_imports") ); /* list of dlls */ j = mod = 0; LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { output( "\t%s 0\n", get_asm_ptr_keyword() ); /* grAttrs */ output( "\t%s .L__wine_delay_name_%s\n", /* szName */ get_asm_ptr_keyword(), import->c_name ); output( "\t%s .L__wine_delay_modules+%d\n", /* phmod */ get_asm_ptr_keyword(), mod * get_ptr_size() ); output( "\t%s .L__wine_delay_IAT+%d\n", /* pIAT */ get_asm_ptr_keyword(), j * get_ptr_size() ); output( "\t%s .L__wine_delay_INT+%d\n", /* pINT */ get_asm_ptr_keyword(), j * get_ptr_size() ); output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pBoundIAT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pUnloadIAT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* dwTimeStamp */ j += import->nb_imports; mod++; } output( "\t%s 0\n", get_asm_ptr_keyword() ); /* grAttrs */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* szName */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* phmod */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pIAT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pINT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pBoundIAT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* pUnloadIAT */ output( "\t%s 0\n", get_asm_ptr_keyword() ); /* dwTimeStamp */ output( "\n.L__wine_delay_IAT:\n" ); LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; const char *name = func->name ? func->name : func->export_name; output( "\t%s .L__wine_delay_imp_%s_%s\n", get_asm_ptr_keyword(), import->c_name, name ); } } output( "\n.L__wine_delay_INT:\n" ); LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; if (!func->name) output( "\t%s %d\n", get_asm_ptr_keyword(), func->ordinal ); else output( "\t%s .L__wine_delay_data_%s_%s\n", get_asm_ptr_keyword(), import->c_name, func->name ); } } output( "\n.L__wine_delay_modules:\n" ); LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { output( "\t%s 0\n", get_asm_ptr_keyword() ); } LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { output( ".L__wine_delay_name_%s:\n", import->c_name ); output( "\t%s \"%s\"\n", get_asm_string_keyword(), import->dll_name ); } LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; if (!func->name) continue; output( ".L__wine_delay_data_%s_%s:\n", import->c_name, func->name ); output( "\t%s \"%s\"\n", get_asm_string_keyword(), func->name ); } } output_function_size( "__wine_spec_delay_imports" ); } /* output the delayed import thunks of a Win32 module */ static void output_delayed_import_thunks( const DLLSPEC *spec ) { int idx, j, pos, extra_stack_storage = 0; struct import *import; static const char delayed_import_loaders[] = "__wine_spec_delayed_import_loaders"; static const char delayed_import_thunks[] = "__wine_spec_delayed_import_thunks"; if (list_empty( &dll_delayed )) return; output( "\n/* delayed import thunks */\n\n" ); output( "\t.text\n" ); output( "\t.align %d\n", get_alignment(8) ); output( "%s:\n", asm_name(delayed_import_loaders)); output( "\t%s\n", func_declaration("__wine_delay_load_asm") ); output( "%s:\n", asm_name("__wine_delay_load_asm") ); output_cfi( ".cfi_startproc" ); switch(target_cpu) { case CPU_x86: output( "\tpushl %%ecx\n" ); output_cfi( ".cfi_adjust_cfa_offset 4" ); output( "\tpushl %%edx\n" ); output_cfi( ".cfi_adjust_cfa_offset 4" ); output( "\tpushl %%eax\n" ); output_cfi( ".cfi_adjust_cfa_offset 4" ); output( "\tcall %s\n", asm_name("__wine_spec_delay_load") ); output_cfi( ".cfi_adjust_cfa_offset -4" ); output( "\tpopl %%edx\n" ); output_cfi( ".cfi_adjust_cfa_offset -4" ); output( "\tpopl %%ecx\n" ); output_cfi( ".cfi_adjust_cfa_offset -4" ); output( "\tjmp *%%eax\n" ); break; case CPU_x86_64: output( "\tsubq $0x98,%%rsp\n" ); output_cfi( ".cfi_adjust_cfa_offset 0x98" ); output( "\tmovq %%rdx,0x88(%%rsp)\n" ); output( "\tmovq %%rcx,0x80(%%rsp)\n" ); output( "\tmovq %%r8,0x78(%%rsp)\n" ); output( "\tmovq %%r9,0x70(%%rsp)\n" ); output( "\tmovq %%r10,0x68(%%rsp)\n" ); output( "\tmovq %%r11,0x60(%%rsp)\n" ); output( "\tmovups %%xmm0,0x50(%%rsp)\n" ); output( "\tmovups %%xmm1,0x40(%%rsp)\n" ); output( "\tmovups %%xmm2,0x30(%%rsp)\n" ); output( "\tmovups %%xmm3,0x20(%%rsp)\n" ); output( "\tmovq %%rax,%%rcx\n" ); output( "\tcall %s\n", asm_name("__wine_spec_delay_load") ); output( "\tmovups 0x20(%%rsp),%%xmm3\n" ); output( "\tmovups 0x30(%%rsp),%%xmm2\n" ); output( "\tmovups 0x40(%%rsp),%%xmm1\n" ); output( "\tmovups 0x50(%%rsp),%%xmm0\n" ); output( "\tmovq 0x60(%%rsp),%%r11\n" ); output( "\tmovq 0x68(%%rsp),%%r10\n" ); output( "\tmovq 0x70(%%rsp),%%r9\n" ); output( "\tmovq 0x78(%%rsp),%%r8\n" ); output( "\tmovq 0x80(%%rsp),%%rcx\n" ); output( "\tmovq 0x88(%%rsp),%%rdx\n" ); output( "\taddq $0x98,%%rsp\n" ); output_cfi( ".cfi_adjust_cfa_offset -0x98" ); output( "\tjmp *%%rax\n" ); break; case CPU_ARM: output( "\tpush {r0-r3,FP,LR}\n" ); output( "\tmov r0,IP\n" ); output( "\tldr IP,2f\n"); output( "\tadd IP,PC\n"); output( "\tblx IP\n"); output( "1:\tmov IP,r0\n"); output( "\tpop {r0-r3,FP,LR}\n" ); output( "\tbx IP\n"); output( "2:\t.long %s-1b\n", asm_name("__wine_spec_delay_load") ); break; case CPU_ARM64: output( "\tstp x29, x30, [sp,#-16]!\n" ); output( "\tmov x29, sp\n" ); output( "\tadrp x9, %s\n", asm_name("__wine_spec_delay_load") ); output( "\tadd x9, x9, #:lo12:%s\n", asm_name("__wine_spec_delay_load") ); output( "\tblr x9\n" ); output( "\tmov x9, x0\n" ); output( "\tldp x29, x30, [sp],#16\n" ); output( "\tldp x0, x1, [sp,#16]\n" ); output( "\tldp x2, x3, [sp,#32]\n" ); output( "\tldp x4, x5, [sp,#48]\n" ); output( "\tldp x6, x7, [sp],#80\n" ); output( "\tbr x9\n" ); /* or "ret x9" */ break; case CPU_POWERPC: if (target_platform == PLATFORM_APPLE) extra_stack_storage = 56; /* Save all callee saved registers into a stackframe. */ output( "\tstwu %s, -%d(%s)\n",ppc_reg(1), 48+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(3), 4+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(4), 8+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(5), 12+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(6), 16+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(7), 20+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(8), 24+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(9), 28+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(10),32+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(11),36+extra_stack_storage, ppc_reg(1)); output( "\tstw %s, %d(%s)\n", ppc_reg(12),40+extra_stack_storage, ppc_reg(1)); /* r0 -> r3 (arg1) */ output( "\tmr %s, %s\n", ppc_reg(3), ppc_reg(0)); /* save return address */ output( "\tmflr %s\n", ppc_reg(0)); output( "\tstw %s, %d(%s)\n", ppc_reg(0), 44+extra_stack_storage, ppc_reg(1)); /* Call the __wine_delay_load function, arg1 is arg1. */ output( "\tbl %s\n", asm_name("__wine_spec_delay_load") ); /* Load return value from call into ctr register */ output( "\tmtctr %s\n", ppc_reg(3)); /* restore all saved registers and drop stackframe. */ output( "\tlwz %s, %d(%s)\n", ppc_reg(3), 4+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(4), 8+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(5), 12+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(6), 16+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(7), 20+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(8), 24+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(9), 28+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(10),32+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(11),36+extra_stack_storage, ppc_reg(1)); output( "\tlwz %s, %d(%s)\n", ppc_reg(12),40+extra_stack_storage, ppc_reg(1)); /* Load return value from call into return register */ output( "\tlwz %s, %d(%s)\n", ppc_reg(0), 44+extra_stack_storage, ppc_reg(1)); output( "\tmtlr %s\n", ppc_reg(0)); output( "\taddi %s, %s, %d\n", ppc_reg(1), ppc_reg(1), 48+extra_stack_storage); /* branch to ctr register. */ output( "\tbctr\n"); break; } output_cfi( ".cfi_endproc" ); output_function_size( "__wine_delay_load_asm" ); output( "\n" ); idx = 0; LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { for (j = 0; j < import->nb_imports; j++) { struct import_func *func = &import->imports[j]; const char *name = func->name ? func->name : func->export_name; output( ".L__wine_delay_imp_%s_%s:\n", import->c_name, name ); output_cfi( ".cfi_startproc" ); switch(target_cpu) { case CPU_x86: output( "\tmovl $%d, %%eax\n", (idx << 16) | j ); output( "\tjmp %s\n", asm_name("__wine_delay_load_asm") ); break; case CPU_x86_64: output( "\tmovq $%d,%%rax\n", (idx << 16) | j ); output( "\tjmp %s\n", asm_name("__wine_delay_load_asm") ); break; case CPU_ARM: { unsigned int mask, count = 0, val = (idx << 16) | j; for (mask = 0xff; mask; mask <<= 8) if (val & mask) output( "\t%s IP,#%u\n", count++ ? "add" : "mov", val & mask ); if (!count) output( "\tmov IP,#0\n" ); output( "\tb %s\n", asm_name("__wine_delay_load_asm") ); break; } case CPU_ARM64: output( "\tstp x6, x7, [sp,#-80]!\n" ); output( "\tstp x4, x5, [sp,#48]\n" ); output( "\tstp x2, x3, [sp,#32]\n" ); output( "\tstp x0, x1, [sp,#16]\n" ); output( "\tmov x0, #%d\n", idx ); output( "\tmov x1, #16384\n" ); output( "\tmul x1, x0, x1\n" ); output( "\tmov x0, x1\n" ); output( "\tmov x1, #4\n" ); output( "\tmul x1, x0, x1\n" ); output( "\tmov x0, x1\n" ); output( "\tadd x0, x0, #%d\n", j ); output( "\tadr x9, %s\n", asm_name("__wine_delay_load_asm") ); output( "\tbr x9\n" ); break; case CPU_POWERPC: switch(target_platform) { case PLATFORM_APPLE: /* On Darwin we can use r0 and r2 */ /* Upper part in r2 */ output( "\tlis %s, %d\n", ppc_reg(2), idx); /* Lower part + r2 -> r0, Note we can't use r0 directly */ output( "\taddi %s, %s, %d\n", ppc_reg(0), ppc_reg(2), j); output( "\tb %s\n", asm_name("__wine_delay_load_asm") ); break; default: /* On linux we can't use r2 since r2 is not a scratch register (hold the TOC) */ /* Save r13 on the stack */ output( "\taddi %s, %s, -0x4\n", ppc_reg(1), ppc_reg(1)); output( "\tstw %s, 0(%s)\n", ppc_reg(13), ppc_reg(1)); /* Upper part in r13 */ output( "\tlis %s, %d\n", ppc_reg(13), idx); /* Lower part + r13 -> r0, Note we can't use r0 directly */ output( "\taddi %s, %s, %d\n", ppc_reg(0), ppc_reg(13), j); /* Restore r13 */ output( "\tstw %s, 0(%s)\n", ppc_reg(13), ppc_reg(1)); output( "\taddic %s, %s, 0x4\n", ppc_reg(1), ppc_reg(1)); output( "\tb %s\n", asm_name("__wine_delay_load_asm") ); break; } break; } output_cfi( ".cfi_endproc" ); } idx++; } output_function_size( delayed_import_loaders ); output( "\n\t.align %d\n", get_alignment(get_ptr_size()) ); output( "%s:\n", asm_name(delayed_import_thunks)); pos = 0; LIST_FOR_EACH_ENTRY( import, &dll_delayed, struct import, entry ) { for (j = 0; j < import->nb_imports; j++, pos += get_ptr_size()) { struct import_func *func = &import->imports[j]; output_import_thunk( func->name ? func->name : func->export_name, ".L__wine_delay_IAT", pos ); } } output_function_size( delayed_import_thunks ); } /* output import stubs for exported entry points that link to external symbols */ static void output_external_link_imports( DLLSPEC *spec ) { unsigned int i, pos; if (!ext_link_imports.count) return; /* nothing to do */ sort_names( &ext_link_imports ); /* get rid of duplicate names */ for (i = 1; i < ext_link_imports.count; i++) { if (!strcmp( ext_link_imports.str[i-1], ext_link_imports.str[i] )) remove_name( &ext_link_imports, i-- ); } output( "\n/* external link thunks */\n\n" ); output( "\t.data\n" ); output( "\t.align %d\n", get_alignment(get_ptr_size()) ); output( ".L__wine_spec_external_links:\n" ); for (i = 0; i < ext_link_imports.count; i++) output( "\t%s %s\n", get_asm_ptr_keyword(), asm_name(ext_link_imports.str[i]) ); output( "\n\t.text\n" ); output( "\t.align %d\n", get_alignment(get_ptr_size()) ); output( "%s:\n", asm_name("__wine_spec_external_link_thunks") ); for (i = pos = 0; i < ext_link_imports.count; i++) { char *buffer = strmake( "__wine_spec_ext_link_%s", ext_link_imports.str[i] ); output_import_thunk( buffer, ".L__wine_spec_external_links", pos ); free( buffer ); pos += get_ptr_size(); } output_function_size( "__wine_spec_external_link_thunks" ); } /******************************************************************* * output_stubs * * Output the functions for stub entry points */ void output_stubs( DLLSPEC *spec ) { const char *name, *exp_name; int i; if (!has_stubs( spec )) return; output( "\n/* stub functions */\n\n" ); output( "\t.text\n" ); for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (odp->type != TYPE_STUB) continue; name = get_stub_name( odp, spec ); exp_name = odp->name ? odp->name : odp->export_name; output( "\t.align %d\n", get_alignment(4) ); output( "\t%s\n", func_declaration(name) ); output( "%s:\n", asm_name(name) ); output_cfi( ".cfi_startproc" ); switch (target_cpu) { case CPU_x86: /* flesh out the stub a bit to make safedisc happy */ output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output(" \tnop\n" ); output( "\tsubl $12,%%esp\n" ); output_cfi( ".cfi_adjust_cfa_offset 12" ); if (UsePIC) { output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") ); output( "1:" ); needs_get_pc_thunk = 1; if (exp_name) { output( "\tleal .L%s_string-1b(%%eax),%%ecx\n", name ); output( "\tmovl %%ecx,4(%%esp)\n" ); } else output( "\tmovl $%d,4(%%esp)\n", odp->ordinal ); output( "\tleal .L__wine_spec_file_name-1b(%%eax),%%ecx\n" ); output( "\tmovl %%ecx,(%%esp)\n" ); } else { if (exp_name) output( "\tmovl $.L%s_string,4(%%esp)\n", name ); else output( "\tmovl $%d,4(%%esp)\n", odp->ordinal ); output( "\tmovl $.L__wine_spec_file_name,(%%esp)\n" ); } output( "\tcall %s\n", asm_name("__wine_spec_unimplemented_stub") ); break; case CPU_x86_64: output( "\tsubq $0x28,%%rsp\n" ); output_cfi( ".cfi_adjust_cfa_offset 8" ); output( "\tleaq .L__wine_spec_file_name(%%rip),%%rcx\n" ); if (exp_name) output( "leaq .L%s_string(%%rip),%%rdx\n", name ); else output( "\tmovq $%d,%%rdx\n", odp->ordinal ); output( "\tcall %s\n", asm_name("__wine_spec_unimplemented_stub") ); break; case CPU_ARM: output( "\tldr r0,2f\n"); output( "\tadd r0,PC\n"); output( "\tldr r1,2f+4\n"); output( "1:" ); if (exp_name) output( "\tadd r1,PC\n"); output( "\tbl %s\n", asm_name("__wine_spec_unimplemented_stub") ); output( "2:\t.long .L__wine_spec_file_name-1b\n" ); if (exp_name) output( "\t.long .L%s_string-2b\n", name ); else output( "\t.long %u\n", odp->ordinal ); break; case CPU_ARM64: output( "\tadrp x0, .L__wine_spec_file_name\n" ); output( "\tadd x0, x0, #:lo12:.L__wine_spec_file_name\n" ); if (exp_name) { output( "\tadrp x1, .L%s_string\n", name ); output( "\tadd x1, x1, #:lo12:.L%s_string\n", name ); } else output( "\tmov x1, %u\n", odp->ordinal ); output( "\tadrp x2, %s\n", asm_name("__wine_spec_unimplemented_stub") ); output( "\tadd x2, x2, #:lo12:%s\n", asm_name("__wine_spec_unimplemented_stub") ); output( "\tblr x2\n" ); break; default: assert(0); } output_cfi( ".cfi_endproc" ); output_function_size( name ); } output( "\t%s\n", get_asm_string_section() ); output( ".L__wine_spec_file_name:\n" ); output( "\t%s \"%s\"\n", get_asm_string_keyword(), spec->file_name ); for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (odp->type != TYPE_STUB) continue; exp_name = odp->name ? odp->name : odp->export_name; if (exp_name) { name = get_stub_name( odp, spec ); output( ".L%s_string:\n", name ); output( "\t%s \"%s\"\n", get_asm_string_keyword(), exp_name ); } } } static int cmp_link_name( const void *e1, const void *e2 ) { const ORDDEF *odp1 = *(const ORDDEF * const *)e1; const ORDDEF *odp2 = *(const ORDDEF * const *)e2; return strcmp( odp1->link_name, odp2->link_name ); } /* output the functions for system calls */ void output_syscalls( DLLSPEC *spec ) { const unsigned int invalid_param = 0xc000000d; /* STATUS_INVALID_PARAMETER */ int i, count; ORDDEF **syscalls = NULL; for (i = count = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; if (!(odp->flags & FLAG_SYSCALL)) continue; if (!syscalls) syscalls = xmalloc( (spec->nb_entry_points - i) * sizeof(*syscalls) ); syscalls[count++] = odp; } if (!count) return; count = sort_func_list( syscalls, count, cmp_link_name ); output( "\n/* system calls */\n\n" ); output( "\t.text\n" ); if (unix_lib) { output( "\t.align %d\n", get_alignment(4) ); output( "\t%s\n", func_declaration("__wine_syscall_dispatcher") ); output( "%s\n", asm_globl("__wine_syscall_dispatcher") ); output_cfi( ".cfi_startproc" ); switch (target_cpu) { case CPU_x86: output( "\tpushl %%ebp\n" ); output_cfi( ".cfi_adjust_cfa_offset 4\n" ); output_cfi( ".cfi_rel_offset %%ebp,0\n" ); output( "\tmovl %%esp,%%ebp\n" ); output_cfi( ".cfi_def_cfa_register %%ebp\n" ); output( "\tpushl %%esi\n" ); output_cfi( ".cfi_rel_offset %%esi,-4\n" ); output( "\tpushl %%edi\n" ); output_cfi( ".cfi_rel_offset %%edi,-8\n" ); output( "\tcmpl $%u,%%eax\n", count ); output( "\tjae 3f\n" ); if (UsePIC) { output( "\tmovl %%eax,%%edx\n" ); output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") ); output( "1:\tmovzbl .Lsyscall_args-1b(%%eax,%%edx,1),%%ecx\n" ); needs_get_pc_thunk = 1; } else output( "\tmovzbl .Lsyscall_args(%%eax),%%ecx\n" ); output( "\tsubl %%ecx,%%esp\n" ); output( "\tshrl $2,%%ecx\n" ); output( "\tleal 12(%%ebp),%%esi\n" ); output( "\tandl $~15,%%esp\n" ); output( "\tmovl %%esp,%%edi\n" ); output( "\tcld\n" ); output( "\trep; movsl\n" ); if (UsePIC) output( "\tcall *.Lsyscall_table-1b(%%eax,%%edx,4)\n" ); else output( "\tcall *.Lsyscall_table(,%%eax,4)\n" ); output( "\tleal -8(%%ebp),%%esp\n" ); output( "2:\tpopl %%edi\n" ); output_cfi( ".cfi_same_value %%edi\n" ); output( "\tpopl %%esi\n" ); output_cfi( ".cfi_same_value %%esi\n" ); output( "\tpopl %%ebp\n" ); output_cfi( ".cfi_def_cfa %%esp,4\n" ); output_cfi( ".cfi_same_value %%ebp\n" ); output( "\tret\n" ); output( "3:\tmovl $0x%x,%%eax\n", invalid_param ); output( "\tjmp 2b\n" ); break; case CPU_x86_64: output( "\tpushq %%rbp\n" ); output_cfi( ".cfi_adjust_cfa_offset 8" ); output_cfi( ".cfi_rel_offset %%rbp,0" ); output( "\tmovq %%rsp,%%rbp\n" ); output_cfi( ".cfi_def_cfa_register %%rbp" ); output( "\tpushq %%rsi\n" ); output_cfi( ".cfi_rel_offset %%rsi,-8" ); output( "\tpushq %%rdi\n" ); output_cfi( ".cfi_rel_offset %%rdi,-16" ); /* Legends of Runeterra hooks the first system call return instruction, and * depends on us returning to it. Adjust the return address accordingly. */ output( "\tsubq $0xb,0x8(%%rbp)\n" ); output( "\tcmpq $%u,%%rax\n", count ); output( "\tjae 4f\n" ); output( "\tleaq .Lsyscall_args(%%rip),%%rcx\n" ); output( "\tmovzbl (%%rcx,%%rax),%%ecx\n" ); output( "\tsubq $0x20,%%rcx\n" ); output( "\tja 1f\n" ); output( "\tandq $~15,%%rsp\n\t" ); output( "\tjmp 2f\n" ); output( "1:\tsubq %%rcx,%%rsp\n" ); output( "\tshrq $3,%%rcx\n" ); output( "\tleaq 0x38(%%rbp),%%rsi\n" ); output( "\tandq $~15,%%rsp\n\t" ); output( "\tmovq %%rsp,%%rdi\n" ); output( "\tcld\n" ); output( "\trep; movsq\n" ); output( "2:\tmovq %%r10,%%rcx\n" ); output( "\tsubq $0x20,%%rsp\n" ); output( "\tleaq .Lsyscall_table(%%rip),%%r10\n" ); output( "\tcallq *(%%r10,%%rax,8)\n" ); output( "3:\tleaq -0x10(%%rbp),%%rsp\n" ); output( "\tpopq %%rdi\n" ); output_cfi( ".cfi_same_value %%rdi" ); output( "\tpopq %%rsi\n" ); output_cfi( ".cfi_same_value %%rsi" ); output_cfi( ".cfi_def_cfa_register %%rsp" ); output( "\tpopq %%rbp\n" ); output_cfi( ".cfi_adjust_cfa_offset -8" ); output_cfi( ".cfi_same_value %%rbp" ); output( "\tret\n" ); output( "4:\tmovl $0x%x,%%eax\n", invalid_param ); output( "\tjmp 3b\n" ); break; case CPU_ARM: output( "\tldr r1, 4f\n" ); output( "\tcmp r0, r1\n" ); output( "\tbcs 2f\n" ); output( "\tldr r1, 3f\n"); output( "\tadd r1, pc\n"); output( "\tldr ip, [r1, r0, lsl #2]\n"); output( "1:\tpop {r0-r1}\n" ); output( "\tbx ip\n"); output( "2:\tpop {r0-r1}\n" ); output( "\tldr r0,5f\n" ); output( "bx lr\n" ); output( "3:\t.long .Lsyscall_table-1b\n" ); output( "4:\t.long %u\n", count ); output( "5:\t.long 0x%x\n", invalid_param ); break; case CPU_ARM64: output( "\tcmp x8, %u\n", count ); output( "\tbcs 1f\n" ); output( "\tadrp x16, .Lsyscall_table\n" ); output( "\tadd x16, x16, #:lo12:.Lsyscall_table\n" ); output( "\tldr x16, [x16, x8, lsl 3]\n" ); output( "\tbr x16\n" ); output( "1:\tmov x0, #0x%x\n", invalid_param & 0xffff0000 ); output( "\tmovk x0, #0x%x\n", invalid_param & 0x0000ffff ); output( "\tret\n" ); break; default: assert(0); } output_cfi( ".cfi_endproc" ); output_function_size( "__wine_syscall_dispatcher" ); output( "\t.data\n" ); output( "\t.align %d\n", get_alignment( get_ptr_size() ) ); output( ".Lsyscall_table:\n" ); for (i = 0; i < count; i++) output( "\t%s %s\n", get_asm_ptr_keyword(), asm_name( get_link_name( syscalls[i] ))); output( ".Lsyscall_args:\n" ); for (i = 0; i < count; i++) output( "\t.byte %u\n", get_args_size( syscalls[i] )); return; } for (i = 0; i < count; i++) { ORDDEF *odp = syscalls[i]; const char *name = get_link_name(odp); output( "\t.align %d\n", get_alignment(16) ); output( "\t%s\n", func_declaration(name) ); output( "%s\n", asm_globl(name) ); output_cfi( ".cfi_startproc" ); switch (target_cpu) { case CPU_x86: if (UsePIC) { output( "\tcall %s\n", asm_name("__wine_spec_get_pc_thunk_eax") ); output( "1:\tmovl %s-1b(%%eax),%%edx\n", asm_name("__wine_syscall_dispatcher") ); output( "\tmovl $%u,%%eax\n", i ); needs_get_pc_thunk = 1; } else { output( "\tmovl $%u,%%eax\n", i ); output( "\tmovl $%s,%%edx\n", asm_name("__wine_syscall") ); } output( "\tcall *%%edx\n" ); output( "\tret $%u\n", get_args_size( odp )); break; case CPU_x86_64: /* Chromium depends on syscall thunks having the same form as on * Windows. For 64-bit systems the only viable form we can emulate is * having an int $0x2e fallback. Since actually using an interrupt is * expensive, and since for some reason Chromium doesn't actually * validate that instruction, we can just put a jmp there instead. */ output( "\t.byte 0x4c,0x8b,0xd1\n" ); /* movq %rcx,%r10 */ output( "\t.byte 0xb8\n" ); /* movl $i,%eax */ output( "\t.long %u\n", i ); output( "\t.byte 0xf6,0x04,0x25,0x08,0x03,0xfe,0x7f,0x01\n" ); /* testb $1,0x7ffe0308 */ output( "\t.byte 0x75,0x03\n" ); /* jne 1f */ output( "\t.byte 0x0f,0x05\n" ); /* syscall */ output( "\t.byte 0xc3\n" ); /* ret */ output( "\tjmp 1f\n" ); output( "\t.byte 0xc3\n" ); /* ret */ if (target_platform == PLATFORM_WINDOWS) { output( "1:\t.byte 0xff,0x14,0x25\n" ); /* 2: callq *(__wine_syscall_dispatcher) */ output( "\t.long __wine_syscall_dispatcher\n" ); } else { output( "\tnop\n" ); output( "1:\tcallq *%s(%%rip)\n", asm_name("__wine_syscall_dispatcher") ); } output( "\tret\n" ); break; case CPU_ARM: output( "\tpush {r0-r1}\n" ); output( "\tldr r0, 3f\n"); output( "\tldr r1, 2f\n"); output( "\tadd r1, pc\n"); output( "\tldr ip, [r1]\n"); output( "1:\tbx ip\n"); output( "2:\t.long %s-1b\n", asm_name("__wine_syscall_dispatcher") ); output( "3:\t.long %u\n", i ); break; case CPU_ARM64: output( "\tmov x8, #%u\n", i ); output( "\tadrp x16, %s\n", asm_name("__wine_syscall_dispatcher") ); output( "\tldr x16, [x16, #:lo12:%s]\n", asm_name("__wine_syscall_dispatcher") ); output( "\tbr x16\n"); break; default: assert(0); } output_cfi( ".cfi_endproc" ); output_function_size( name ); } if (target_cpu == CPU_x86 && !UsePIC) { output( "\t.align %d\n", get_alignment(16) ); output( "\t%s\n", func_declaration("__wine_syscall") ); output( "%s:\n", asm_name("__wine_syscall") ); output( "\tjmp *(%s)\n", asm_name("__wine_syscall_dispatcher") ); output_function_size( "__wine_syscall" ); } output( "\t.data\n" ); output( "\t.align %d\n", get_alignment( get_ptr_size() ) ); output( "%s\n", asm_globl("__wine_syscall_dispatcher") ); output( "\t%s 0\n", get_asm_ptr_keyword() ); } /* output the import and delayed import tables of a Win32 module */ void output_imports( DLLSPEC *spec ) { if (target_platform == PLATFORM_WINDOWS) return; output_immediate_imports(); output_delayed_imports( spec ); output_immediate_import_thunks(); output_delayed_import_thunks( spec ); output_external_link_imports( spec ); } /* create a new asm temp file */ static void new_output_as_file(void) { char *name; if (output_file) fclose( output_file ); name = open_temp_output_file( ".s" ); strarray_add( &as_files, name, NULL ); } /* assemble all the asm files */ static void assemble_files( const char *prefix ) { unsigned int i; if (output_file) fclose( output_file ); output_file = NULL; for (i = 0; i < as_files.count; i++) { char *obj = get_temp_file_name( prefix, ".o" ); assemble_file( as_files.str[i], obj ); as_files.str[i] = obj; } } /* build a library from the current asm files and any additional object files in argv */ static void build_library( const char *output_name, char **argv, int create ) { struct strarray args = find_tool( "ar", NULL ); struct strarray ranlib = find_tool( "ranlib", NULL ); strarray_add( &args, create ? "rc" : "r", output_name, NULL ); strarray_addall( &args, as_files ); strarray_addv( &args, argv ); if (create) unlink( output_name ); spawn( args ); strarray_add( &ranlib, output_name, NULL ); spawn( ranlib ); } /* create a Windows-style import library */ static void build_windows_import_lib( DLLSPEC *spec ) { struct strarray args; char *def_file; const char *as_flags, *m_flag; def_file = open_temp_output_file( ".def" ); output_def_file( spec, 1 ); fclose( output_file ); args = find_tool( "dlltool", NULL ); switch (target_cpu) { case CPU_x86: m_flag = "i386"; as_flags = "--as-flags=--32"; break; case CPU_x86_64: m_flag = "i386:x86-64"; as_flags = "--as-flags=--64"; break; default: m_flag = NULL; break; } strarray_add( &args, "-k", strendswith( output_file_name, ".delay.a" ) ? "-y" : "-l", output_file_name, "-d", def_file, NULL ); if (m_flag) strarray_add( &args, "-m", m_flag, as_flags, NULL ); spawn( args ); } /* create a Unix-style import library */ static void build_unix_import_lib( DLLSPEC *spec ) { static const char valid_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._@"; int i, total; const char *name, *prefix; char *dll_name = xstrdup( spec->file_name ); if (strendswith( dll_name, ".dll" )) dll_name[strlen(dll_name) - 4] = 0; if (strspn( dll_name, valid_chars ) < strlen( dll_name )) fatal_error( "%s contains invalid characters\n", spec->file_name ); /* entry points */ for (i = total = 0; i < spec->nb_entry_points; i++) { const ORDDEF *odp = &spec->entry_points[i]; if (odp->name) name = odp->name; else if (odp->export_name) name = odp->export_name; else continue; if (odp->flags & FLAG_PRIVATE) continue; total++; /* C++ mangled names cannot be imported */ if (strpbrk( name, "?@" )) continue; switch(odp->type) { case TYPE_VARARGS: case TYPE_CDECL: case TYPE_STDCALL: prefix = (!odp->name || (odp->flags & FLAG_ORDINAL)) ? import_ord_prefix : import_func_prefix; new_output_as_file(); output( "\t.text\n" ); output( "\n\t.align %d\n", get_alignment( get_ptr_size() )); output( "\t%s\n", func_declaration( name ) ); output( "%s\n", asm_globl( name ) ); output( "\t%s %s%s$%u$%s\n", get_asm_ptr_keyword(), asm_name( prefix ), dll_name, odp->ordinal, name ); output_function_size( name ); output_gnu_stack_note(); break; default: break; } } if (!total) warning( "%s: Import library doesn't export anything\n", spec->file_name ); if (!as_files.count) /* create a dummy file to avoid empty import libraries */ { new_output_as_file(); output( "\t.text\n" ); } assemble_files( spec->file_name ); free( dll_name ); } /* output an import library for a Win32 module and additional object files */ void output_static_lib( DLLSPEC *spec, char **argv ) { if (target_platform == PLATFORM_WINDOWS) { if (spec) build_windows_import_lib( spec ); if (argv[0] || !spec) build_library( output_file_name, argv, !spec ); } else { if (spec) build_unix_import_lib( spec ); build_library( output_file_name, argv, 1 ); } }