mirror of
git://source.winehq.org/git/wine.git
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241 lines
6.5 KiB
C
241 lines
6.5 KiB
C
/*
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* Emulator initialisation code
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*
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* Copyright 2000 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_SYS_MMAN_H
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# include <sys/mman.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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#endif
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#ifdef HAVE_SYS_SYSCALL_H
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# include <sys/syscall.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <pthread.h>
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#include "wine/library.h"
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#include "main.h"
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#ifdef __APPLE__
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#ifndef __clang__
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__asm__(".zerofill WINE_DOS, WINE_DOS, ___wine_dos, 0x40000000");
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__asm__(".zerofill WINE_SHAREDHEAP, WINE_SHAREDHEAP, ___wine_shared_heap, 0x03000000");
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extern char __wine_dos[0x40000000], __wine_shared_heap[0x03000000];
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#else
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__asm__(".zerofill WINE_DOS, WINE_DOS");
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__asm__(".zerofill WINE_SHAREDHEAP, WINE_SHAREDHEAP");
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static char __wine_dos[0x40000000] __attribute__((section("WINE_DOS, WINE_DOS")));
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static char __wine_shared_heap[0x03000000] __attribute__((section("WINE_SHAREDHEAP, WINE_SHAREDHEAP")));
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#endif
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static const struct wine_preload_info wine_main_preload_info[] =
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{
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{ __wine_dos, sizeof(__wine_dos) }, /* DOS area + PE exe */
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{ __wine_shared_heap, sizeof(__wine_shared_heap) }, /* shared user data + shared heap */
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{ 0, 0 } /* end of list */
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};
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static inline void reserve_area( void *addr, size_t size )
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{
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wine_anon_mmap( addr, size, PROT_NONE, MAP_FIXED | MAP_NORESERVE );
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wine_mmap_add_reserved_area( addr, size );
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}
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#else /* __APPLE__ */
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/* the preloader will set this variable */
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const struct wine_preload_info *wine_main_preload_info = NULL;
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static inline void reserve_area( void *addr, size_t size )
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{
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wine_mmap_add_reserved_area( addr, size );
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}
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#endif /* __APPLE__ */
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/***********************************************************************
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* check_command_line
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*
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* Check if command line is one that needs to be handled specially.
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*/
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static void check_command_line( int argc, char *argv[] )
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{
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static const char usage[] =
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"Usage: wine PROGRAM [ARGUMENTS...] Run the specified program\n"
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" wine --help Display this help and exit\n"
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" wine --version Output version information and exit";
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if (argc <= 1)
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{
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fprintf( stderr, "%s\n", usage );
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exit(1);
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}
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if (!strcmp( argv[1], "--help" ))
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{
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printf( "%s\n", usage );
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exit(0);
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}
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if (!strcmp( argv[1], "--version" ))
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{
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printf( "%s\n", wine_get_build_id() );
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exit(0);
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}
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}
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#if defined(__linux__) && defined(__i386__)
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/* separate thread to check for NPTL and TLS features */
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static void *needs_pthread( void *arg )
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{
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pid_t tid = syscall( 224 /* SYS_gettid */ );
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/* check for NPTL */
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if (tid != -1 && tid != getpid()) return (void *)1;
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/* check for TLS glibc */
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if (wine_get_gs() != 0) return (void *)1;
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/* check for exported epoll_create to detect new glibc versions without TLS */
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if (wine_dlsym( RTLD_DEFAULT, "epoll_create", NULL, 0 ))
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fprintf( stderr,
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"wine: glibc >= 2.3 without NPTL or TLS is not a supported combination.\n"
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" Please upgrade to a glibc with NPTL support.\n" );
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else
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fprintf( stderr,
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"wine: Your C library is too old. You need at least glibc 2.3 with NPTL support.\n" );
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return 0;
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}
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/* check if we support the glibc threading model */
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static void check_threading(void)
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{
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pthread_t id;
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void *ret;
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pthread_create( &id, NULL, needs_pthread, NULL );
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pthread_join( id, &ret );
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if (!ret) exit(1);
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}
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static void check_vmsplit( void *stack )
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{
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if (stack < (void *)0x80000000)
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{
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/* if the stack is below 0x80000000, assume we can safely try a munmap there */
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if (munmap( (void *)0x80000000, 1 ) == -1 && errno == EINVAL)
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fprintf( stderr,
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"Warning: memory above 0x80000000 doesn't seem to be accessible.\n"
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"Wine requires a 3G/1G user/kernel memory split to work properly.\n" );
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}
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}
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static void set_max_limit( int limit )
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{
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struct rlimit rlimit;
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if (!getrlimit( limit, &rlimit ))
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{
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rlimit.rlim_cur = rlimit.rlim_max;
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setrlimit( limit, &rlimit );
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}
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}
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static int pre_exec(void)
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{
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int temp;
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check_threading();
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check_vmsplit( &temp );
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set_max_limit( RLIMIT_AS );
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return 1;
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}
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#elif defined(__linux__) && defined(__x86_64__)
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static int pre_exec(void)
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{
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return 1; /* we have a preloader on x86-64 */
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}
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#elif (defined(__FreeBSD__) || defined (__FreeBSD_kernel__) || defined(__DragonFly__)) && defined(__i386__)
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static int pre_exec(void)
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{
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struct rlimit rl;
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rl.rlim_cur = 0x02000000;
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rl.rlim_max = 0x02000000;
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setrlimit( RLIMIT_DATA, &rl );
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return 1;
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}
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#else
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static int pre_exec(void)
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{
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return 0; /* no exec needed */
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}
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#endif
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/**********************************************************************
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* main
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*/
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int main( int argc, char *argv[] )
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{
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char error[1024];
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int i;
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if (!getenv( "WINELOADERNOEXEC" )) /* first time around */
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{
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static char noexec[] = "WINELOADERNOEXEC=1";
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putenv( noexec );
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check_command_line( argc, argv );
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if (pre_exec())
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{
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wine_init_argv0_path( argv[0] );
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wine_exec_wine_binary( NULL, argv, getenv( "WINELOADER" ));
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fprintf( stderr, "wine: could not exec the wine loader\n" );
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exit(1);
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}
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}
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#ifndef __APPLE__
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if (wine_main_preload_info)
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#endif
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{
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for (i = 0; wine_main_preload_info[i].size; i++)
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reserve_area( wine_main_preload_info[i].addr, wine_main_preload_info[i].size );
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}
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wine_init( argc, argv, error, sizeof(error) );
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fprintf( stderr, "wine: failed to initialize: %s\n", error );
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exit(1);
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}
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