/*
* 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 <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "build.h"
struct import
{
DLLSPEC *spec; /* description of the imported dll */
char *full_name; /* full name of the input file */
dev_t dev; /* device/inode of the input file */
ino_t ino;
int delay; /* delay or not dll loading ? */
ORDDEF **exports; /* functions exported from this dll */
int nb_exports; /* number of exported functions */
ORDDEF **imports; /* functions we want to import from this dll */
int nb_imports; /* number of imported functions */
};
struct name_table
{
char **names;
unsigned int count, size;
};
static struct name_table undef_symbols; /* list of undefined symbols */
static struct name_table extra_ld_symbols; /* list of extra symbols that ld should resolve */
static struct name_table delayed_imports; /* list of delayed import dlls */
static struct name_table ext_link_imports; /* list of external symbols to link to */
static struct import **dll_imports = NULL;
static int nb_imports = 0; /* number of imported dlls (delayed or not) */
static int nb_delayed = 0; /* number of delayed dlls */
static int total_imports = 0; /* total number of imported functions */
static int total_delayed = 0; /* total number of imported functions in delayed DLLs */
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 );
}
/* add a name to a name table */
static inline void add_name( struct name_table *table, const char *name )
{
if (table->count == table->size)
{
table->size += (table->size / 2);
if (table->size < 32) table->size = 32;
table->names = xrealloc( table->names, table->size * sizeof(*table->names) );
}
table->names[table->count++] = xstrdup( name );
}
/* remove a name from a name table */
static inline void remove_name( struct name_table *table, unsigned int idx )
{
assert( idx < table->count );
free( table->names[idx] );
memmove( table->names + idx, table->names + idx + 1,
(table->count - idx - 1) * sizeof(*table->names) );
table->count--;
}
/* locate a name in a (sorted) list */
static inline const char *find_name( const char *name, const struct name_table *table )
{
char **res = NULL;
if (table->count) res = bsearch( &name, table->names, table->count, sizeof(*table->names), name_cmp );
return res ? *res : NULL;
}
/* sort a name table */
static inline void sort_names( struct name_table *table )
{
if (table->count) qsort( table->names, table->count, sizeof(*table->names), 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_dll_spec( imp->spec );
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.names[i], name )) return 1;
}
return 0;
}
/* check whether a given dll has already been imported */
static struct import *is_already_imported( const char *name )
{
int i;
for (i = 0; i < nb_imports; i++)
{
if (!strcmp( dll_imports[i]->spec->file_name, name )) return dll_imports[i];
}
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;
int i;
for (i = 0; i < nb_lib_paths; i++)
{
if ((fullname = try_library_path( lib_path[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 int read_import_lib( struct import *imp )
{
FILE *f;
int i, ret;
struct stat stat;
struct import *prev_imp;
DLLSPEC *spec = imp->spec;
int delayed = is_delayed_import( spec->file_name );
f = open_input_file( NULL, imp->full_name );
fstat( fileno(f), &stat );
imp->dev = stat.st_dev;
imp->ino = stat.st_ino;
ret = parse_def_file( f, spec );
close_input_file( f );
if (!ret) return 0;
/* check if we already imported that library from a different file */
if ((prev_imp = is_already_imported( 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 );
return 0; /* the same file was already loaded, ignore this one */
}
if (delayed)
{
imp->delay = 1;
nb_delayed++;
}
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 1;
}
/* 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 )
{
struct import *imp = xmalloc( sizeof(*imp) );
imp->spec = alloc_dll_spec();
imp->spec->file_name = get_dll_name( name, filename );
imp->delay = 0;
imp->imports = NULL;
imp->nb_imports = 0;
imp->exports = NULL;
imp->nb_exports = 0;
if (filename) imp->full_name = xstrdup( filename );
else imp->full_name = find_library( name );
if (read_import_lib( imp ))
{
dll_imports = xrealloc( dll_imports, (nb_imports+1) * sizeof(*dll_imports) );
dll_imports[nb_imports++] = imp;
}
else
{
free_imports( imp );
if (nb_errors) exit(1);
}
}
/* 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 );
add_name( &delayed_imports, fullname );
if ((imp = is_already_imported( fullname )) && !imp->delay)
{
imp->delay = 1;
nb_delayed++;
}
free( fullname );
}
/* remove an imported dll, based on its index in the dll_imports array */
static void remove_import_dll( int index )
{
struct import *imp = dll_imports[index];
memmove( &dll_imports[index], &dll_imports[index+1], sizeof(imp) * (nb_imports - index - 1) );
nb_imports--;
if (imp->delay) nb_delayed--;
free_imports( imp );
}
/* add a symbol to the list of extra symbols that ld must resolve */
void add_extra_ld_symbol( const char *name )
{
add_name( &extra_ld_symbols, name );
}
/* add a function to the list of imports from a given dll */
static void add_import_func( struct import *imp, ORDDEF *func )
{
imp->imports = xrealloc( imp->imports, (imp->nb_imports+1) * sizeof(*imp->imports) );
imp->imports[imp->nb_imports++] = func;
total_imports++;
if (imp->delay) total_delayed++;
}
/* get the default entry point for a given spec file */
static const char *get_default_entry_point( const DLLSPEC *spec )
{
if (spec->characteristics & IMAGE_FILE_DLL) return "__wine_spec_dll_entry";
if (spec->subsystem == IMAGE_SUBSYSTEM_NATIVE) return "__wine_spec_drv_entry";
if (spec->type == SPEC_WIN16) return "__wine_spec_exe16_entry";
return "__wine_spec_exe_entry";
}
/* check if the spec file exports any stubs */
static int has_stubs( const DLLSPEC *spec )
{
int i;
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 )
{
if (!spec->init_func) spec->init_func = xstrdup( get_default_entry_point(spec) );
add_extra_ld_symbol( spec->init_func );
if (has_stubs( spec )) add_extra_ld_symbol( "__wine_spec_unimplemented_stub" );
if (nb_delayed) 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->spec->file_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 )
{
char *link_name, *api_name, *dll_name, *p;
int i, j;
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 );
for (j = 0; j < nb_imports; j++)
{
struct import *imp = dll_imports[j];
if (strcasecmp( imp->spec->file_name, dll_name )) continue;
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->spec->file_name );
break;
}
if (j == nb_imports)
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;
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 (find_name( odp->link_name, &undef_symbols ))
{
switch(odp->type)
{
case TYPE_PASCAL:
case TYPE_STDCALL:
case TYPE_CDECL:
case TYPE_VARARGS:
case TYPE_THISCALL:
if (link_ext_symbols)
{
odp->flags |= FLAG_EXT_LINK;
add_name( &ext_link_imports, odp->link_name );
}
else error( "%s:%d: function '%s' not defined\n",
spec->src_name, odp->lineno, odp->link_name );
break;
default:
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;
FILE *f;
as_file = get_temp_file_name( output_file_name, ".s" );
if (!(f = fopen( as_file, "w" ))) fatal_error( "Cannot create %s\n", as_file );
fprintf( f, "\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;
fprintf( f, "\t%s %s\n", get_asm_ptr_keyword(), asm_name(odp->link_name) );
}
for (j = 0; j < extra_ld_symbols.count; j++)
fprintf( f, "\t%s %s\n", get_asm_ptr_keyword(), asm_name(extra_ld_symbols.names[j]) );
fclose( f );
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 );
strarray_free( 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 (!(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;
add_name( &undef_symbols, p );
}
if ((err = pclose( f ))) warning( "%s failed with status %d\n", cmd, err );
free( cmd );
}
/* resolve the imports for a Win32 module */
void resolve_imports( DLLSPEC *spec )
{
int i;
unsigned int j, removed;
ORDDEF *odp;
check_undefined_forwards( spec );
for (i = 0; i < nb_imports; i++)
{
struct import *imp = dll_imports[i];
for (j = removed = 0; j < undef_symbols.count; j++)
{
odp = find_export( undef_symbols.names[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->spec->file_name );
else
{
add_import_func( imp, odp );
remove_name( &undef_symbols, j-- );
removed++;
}
}
}
if (!removed)
{
/* the dll is not used, get rid of it */
if (check_unused( imp, spec ))
warning( "winebuild: %s imported but no symbols used\n", imp->spec->file_name );
remove_import_dll( i );
i--;
}
}
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)
{
if (target_cpu != CPU_x86) return;
if (!UsePIC) return;
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 );
}
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( "\tadr x9, 1f\n" );
output( "\tldur x9, [x9, #0]\n" );
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" );
output( "1:\t.quad %s\n", table );
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 (nb_imports - nb_delayed) > 0;
}
/* output the import table of a Win32 module */
static void output_immediate_imports(void)
{
int i, j;
const char *dll_name;
if (nb_imports == nb_delayed) 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 */
for (i = j = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
dll_name = make_c_identifier( dll_imports[i]->spec->file_name );
output( "\t.long .L__wine_spec_import_data_names+%d-.L__wine_spec_rva_base\n", /* OriginalFirstThunk */
j * get_ptr_size() );
output( "\t.long 0\n" ); /* TimeDateStamp */
output( "\t.long 0\n" ); /* ForwarderChain */
output( "\t.long .L__wine_spec_import_name_%s-.L__wine_spec_rva_base\n", /* Name */
dll_name );
output( "\t.long .L__wine_spec_import_data_ptrs+%d-.L__wine_spec_rva_base\n", /* FirstThunk */
j * get_ptr_size() );
j += dll_imports[i]->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( ".L__wine_spec_import_data_names:\n" );
for (i = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
dll_name = make_c_identifier( dll_imports[i]->spec->file_name );
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
if (!(odp->flags & FLAG_NONAME))
output( "\t%s .L__wine_spec_import_data_%s_%s-.L__wine_spec_rva_base\n",
get_asm_ptr_keyword(), dll_name, odp->name );
else
{
if (get_ptr_size() == 8)
output( "\t.quad 0x800000000000%04x\n", odp->ordinal );
else
output( "\t.long 0x8000%04x\n", odp->ordinal );
}
}
output( "\t%s 0\n", get_asm_ptr_keyword() );
}
output( ".L__wine_spec_import_data_ptrs:\n" );
for (i = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++) output( "\t%s 0\n", get_asm_ptr_keyword() );
output( "\t%s 0\n", get_asm_ptr_keyword() );
}
output( ".L__wine_spec_imports_end:\n" );
for (i = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
dll_name = make_c_identifier( dll_imports[i]->spec->file_name );
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
if (!(odp->flags & FLAG_NONAME))
{
output( "\t.align %d\n", get_alignment(2) );
output( ".L__wine_spec_import_data_%s_%s:\n", dll_name, odp->name );
output( "\t.short %d\n", odp->ordinal );
output( "\t%s \"%s\"\n", get_asm_string_keyword(), odp->name );
}
}
}
for (i = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
dll_name = make_c_identifier( dll_imports[i]->spec->file_name );
output( ".L__wine_spec_import_name_%s:\n\t%s \"%s\"\n",
dll_name, get_asm_string_keyword(), dll_imports[i]->spec->file_name );
}
}
/* output the import thunks of a Win32 module */
static void output_immediate_import_thunks(void)
{
int i, j, pos;
int nb_imm = nb_imports - nb_delayed;
static const char import_thunks[] = "__wine_spec_import_thunks";
if (!nb_imm) 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));
for (i = pos = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++, pos += get_ptr_size())
{
ORDDEF *odp = dll_imports[i]->imports[j];
output_import_thunk( odp->name ? odp->name : odp->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 i, j, mod;
if (!nb_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 */
for (i = j = mod = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
output( "\t%s 0\n", get_asm_ptr_keyword() ); /* grAttrs */
output( "\t%s .L__wine_delay_name_%d\n", /* szName */
get_asm_ptr_keyword(), i );
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 += dll_imports[i]->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" );
for (i = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
const char *name = odp->name ? odp->name : odp->export_name;
output( "\t%s .L__wine_delay_imp_%d_%s\n",
get_asm_ptr_keyword(), i, name );
}
}
output( "\n.L__wine_delay_INT:\n" );
for (i = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
if (!odp->name)
output( "\t%s %d\n", get_asm_ptr_keyword(), odp->ordinal );
else
output( "\t%s .L__wine_delay_data_%d_%s\n",
get_asm_ptr_keyword(), i, odp->name );
}
}
output( "\n.L__wine_delay_modules:\n" );
for (i = 0; i < nb_imports; i++)
{
if (dll_imports[i]->delay) output( "\t%s 0\n", get_asm_ptr_keyword() );
}
for (i = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
output( ".L__wine_delay_name_%d:\n", i );
output( "\t%s \"%s\"\n",
get_asm_string_keyword(), dll_imports[i]->spec->file_name );
}
for (i = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
if (!odp->name) continue;
output( ".L__wine_delay_data_%d_%s:\n", i, odp->name );
output( "\t%s \"%s\"\n", get_asm_string_keyword(), odp->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 i, idx, j, pos, extra_stack_storage = 0;
static const char delayed_import_loaders[] = "__wine_spec_delayed_import_loaders";
static const char delayed_import_thunks[] = "__wine_spec_delayed_import_thunks";
if (!nb_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 $88,%%rsp\n" );
output_cfi( ".cfi_adjust_cfa_offset 88" );
output( "\tmovq %%rdx,80(%%rsp)\n" );
output( "\tmovq %%rcx,72(%%rsp)\n" );
output( "\tmovq %%r8,64(%%rsp)\n" );
output( "\tmovq %%r9,56(%%rsp)\n" );
output( "\tmovq %%r10,48(%%rsp)\n" );
output( "\tmovq %%r11,40(%%rsp)\n" );
output( "\tmovq %%rax,%%rcx\n" );
output( "\tcall %s\n", asm_name("__wine_spec_delay_load") );
output( "\tmovq 40(%%rsp),%%r11\n" );
output( "\tmovq 48(%%rsp),%%r10\n" );
output( "\tmovq 56(%%rsp),%%r9\n" );
output( "\tmovq 64(%%rsp),%%r8\n" );
output( "\tmovq 72(%%rsp),%%rcx\n" );
output( "\tmovq 80(%%rsp),%%rdx\n" );
output( "\taddq $88,%%rsp\n" );
output_cfi( ".cfi_adjust_cfa_offset -88" );
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( "\tadr x9, 1f\n" );
output( "\tldur x9, [x9, #0]\n" );
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" */
output( "1:\t.quad %s\n", asm_name("__wine_spec_delay_load") );
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" );
for (i = idx = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++)
{
ORDDEF *odp = dll_imports[i]->imports[j];
const char *name = odp->name ? odp->name : odp->export_name;
output( ".L__wine_delay_imp_%d_%s:\n", i, 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, 1f\n" );
output( "\tldur x9, [x9, #0]\n" );
output( "\tbr x9\n" );
output( "1:\t.quad %s\n", asm_name("__wine_delay_load_asm") );
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));
for (i = pos = 0; i < nb_imports; i++)
{
if (!dll_imports[i]->delay) continue;
for (j = 0; j < dll_imports[i]->nb_imports; j++, pos += get_ptr_size())
{
ORDDEF *odp = dll_imports[i]->imports[j];
output_import_thunk( odp->name ? odp->name : odp->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.names[i-1], ext_link_imports.names[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.names[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.names[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, count;
if (!has_stubs( spec )) return;
output( "\n/* stub functions */\n\n" );
output( "\t.text\n" );
for (i = count = 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:" );
if (exp_name)
{
output( "\tleal .L%s_string-1b(%%eax),%%ecx\n", name );
output( "\tmovl %%ecx,4(%%esp)\n" );
count++;
}
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 );
count++;
}
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 $8,%%rsp\n" );
output_cfi( ".cfi_adjust_cfa_offset 8" );
output( "\tleaq .L__wine_spec_file_name(%%rip),%%rdi\n" );
if (exp_name)
{
output( "leaq .L%s_string(%%rip),%%rsi\n", name );
count++;
}
else
output( "\tmovq $%d,%%rsi\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");
count++;
}
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;
default:
assert(0);
}
output_cfi( ".cfi_endproc" );
output_function_size( name );
}
if (count)
{
output( "\t%s\n", get_asm_string_section() );
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 );
}
}
}
}
/* output the import and delayed import tables of a Win32 module */
void output_imports( DLLSPEC *spec )
{
output_immediate_imports();
output_delayed_imports( spec );
output_immediate_import_thunks();
output_delayed_import_thunks( spec );
output_external_link_imports( spec );
if (nb_imports || ext_link_imports.count || has_stubs(spec) || has_relays(spec))
output_get_pc_thunk();
}
/* output an import library for a Win32 module and additional object files */
void output_import_lib( DLLSPEC *spec, char **argv )
{
struct strarray *args;
char *def_file;
if (target_platform != PLATFORM_WINDOWS)
fatal_error( "Unix-style import libraries not supported yet\n" );
def_file = get_temp_file_name( output_file_name, ".def" );
fclose( output_file );
if (!(output_file = fopen( def_file, "w" )))
fatal_error( "Unable to create output file '%s'\n", def_file );
output_def_file( spec, 0 );
fclose( output_file );
output_file = NULL;
args = find_tool( "dlltool", NULL );
strarray_add( args, "-k", "-l", output_file_name, "-d", def_file, NULL );
spawn( args );
strarray_free( args );
if (argv[0])
{
args = find_tool( "ar", NULL );
strarray_add( args, "rs", output_file_name, NULL );
strarray_addv( args, argv );
spawn( args );
strarray_free( args );
}
output_file_name = NULL;
}