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/*
* 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__
__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];
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__)
/* separate thread to check for NPTL and TLS features */
static void *needs_pthread( void *arg )
{
pid_t tid = syscall( 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);
}
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 );
return 1;
}
#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__)) && defined(__i386__)
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);
}
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