/* * Emulator initialisation code * * Copyright 2000 Alexandre Julliard * * 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 <errno.h> #include <stdio.h> #include <stdlib.h> #ifdef HAVE_SYS_MMAN_H # include <sys/mman.h> #endif #ifdef HAVE_SYS_RESOURCE_H # include <sys/resource.h> #endif #ifdef HAVE_SYS_SYSCALL_H # include <sys/syscall.h> #endif #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #include <pthread.h> #include "wine/library.h" #include "main.h" #ifdef __APPLE__ #ifndef __clang__ __asm__(".zerofill WINE_DOS, WINE_DOS, ___wine_dos, 0x40000000"); __asm__(".zerofill WINE_SHAREDHEAP, WINE_SHAREDHEAP, ___wine_shared_heap, 0x03000000"); extern char __wine_dos[0x40000000], __wine_shared_heap[0x03000000]; #else __asm__(".zerofill WINE_DOS, WINE_DOS"); __asm__(".zerofill WINE_SHAREDHEAP, WINE_SHAREDHEAP"); static char __wine_dos[0x40000000] __attribute__((section("WINE_DOS, WINE_DOS"))); static char __wine_shared_heap[0x03000000] __attribute__((section("WINE_SHAREDHEAP, WINE_SHAREDHEAP"))); #endif static const struct wine_preload_info wine_main_preload_info[] = { { __wine_dos, sizeof(__wine_dos) }, /* DOS area + PE exe */ { __wine_shared_heap, sizeof(__wine_shared_heap) }, /* shared user data + shared heap */ { 0, 0 } /* end of list */ }; static inline void reserve_area( void *addr, size_t size ) { wine_anon_mmap( addr, size, PROT_NONE, MAP_FIXED | MAP_NORESERVE ); wine_mmap_add_reserved_area( addr, size ); } #else /* __APPLE__ */ /* the preloader will set this variable */ const struct wine_preload_info *wine_main_preload_info = NULL; static inline void reserve_area( void *addr, size_t size ) { wine_mmap_add_reserved_area( addr, size ); } #endif /* __APPLE__ */ /*********************************************************************** * check_command_line * * Check if command line is one that needs to be handled specially. */ static void check_command_line( int argc, char *argv[] ) { static const char usage[] = "Usage: wine PROGRAM [ARGUMENTS...] Run the specified program\n" " wine --help Display this help and exit\n" " wine --version Output version information and exit"; if (argc <= 1) { fprintf( stderr, "%s\n", usage ); exit(1); } if (!strcmp( argv[1], "--help" )) { printf( "%s\n", usage ); exit(0); } if (!strcmp( argv[1], "--version" )) { printf( "%s\n", wine_get_build_id() ); exit(0); } } #if defined(__linux__) && (defined(__i386__) || defined(__arm__)) #ifdef __i386__ /* separate thread to check for NPTL and TLS features */ static void *needs_pthread( void *arg ) { pid_t tid = syscall( 224 /* SYS_gettid */ ); /* check for NPTL */ if (tid != -1 && tid != getpid()) return (void *)1; /* check for TLS glibc */ if (wine_get_gs() != 0) return (void *)1; /* check for exported epoll_create to detect new glibc versions without TLS */ if (wine_dlsym( RTLD_DEFAULT, "epoll_create", NULL, 0 )) fprintf( stderr, "wine: glibc >= 2.3 without NPTL or TLS is not a supported combination.\n" " Please upgrade to a glibc with NPTL support.\n" ); else fprintf( stderr, "wine: Your C library is too old. You need at least glibc 2.3 with NPTL support.\n" ); return 0; } /* check if we support the glibc threading model */ static void check_threading(void) { pthread_t id; void *ret; pthread_create( &id, NULL, needs_pthread, NULL ); pthread_join( id, &ret ); if (!ret) exit(1); } #else static void check_threading(void) { } #endif static void check_vmsplit( void *stack ) { if (stack < (void *)0x80000000) { /* if the stack is below 0x80000000, assume we can safely try a munmap there */ if (munmap( (void *)0x80000000, 1 ) == -1 && errno == EINVAL) fprintf( stderr, "Warning: memory above 0x80000000 doesn't seem to be accessible.\n" "Wine requires a 3G/1G user/kernel memory split to work properly.\n" ); } } static void set_max_limit( int limit ) { struct rlimit rlimit; if (!getrlimit( limit, &rlimit )) { rlimit.rlim_cur = rlimit.rlim_max; setrlimit( limit, &rlimit ); } } static int pre_exec(void) { int temp; check_threading(); check_vmsplit( &temp ); set_max_limit( RLIMIT_AS ); #ifdef __i386__ return 1; /* we have a preloader on x86 */ #else return 0; #endif } #elif defined(__linux__) && defined(__x86_64__) static int pre_exec(void) { return 1; /* we have a preloader on x86-64 */ } #elif (defined(__FreeBSD__) || defined (__FreeBSD_kernel__) || defined(__DragonFly__)) static int pre_exec(void) { struct rlimit rl; rl.rlim_cur = 0x02000000; rl.rlim_max = 0x02000000; setrlimit( RLIMIT_DATA, &rl ); return 1; } #else static int pre_exec(void) { return 0; /* no exec needed */ } #endif /********************************************************************** * main */ int main( int argc, char *argv[] ) { char error[1024]; int i; if (!getenv( "WINELOADERNOEXEC" )) /* first time around */ { static char noexec[] = "WINELOADERNOEXEC=1"; putenv( noexec ); check_command_line( argc, argv ); if (pre_exec()) { wine_init_argv0_path( argv[0] ); wine_exec_wine_binary( NULL, argv, getenv( "WINELOADER" )); fprintf( stderr, "wine: could not exec the wine loader\n" ); exit(1); } } #ifndef __APPLE__ if (wine_main_preload_info) #endif { for (i = 0; wine_main_preload_info[i].size; i++) reserve_area( wine_main_preload_info[i].addr, wine_main_preload_info[i].size ); } wine_init( argc, argv, error, sizeof(error) ); fprintf( stderr, "wine: failed to initialize: %s\n", error ); exit(1); }