4 * Copyright (C) 1995,96,97,98,99,2000,2001,2002 Free Software Foundation, Inc.
5 * Copyright (C) 2004 Mike McCormack for CodeWeavers
6 * Copyright (C) 2004 Alexandre Julliard
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 * The goal of this program is to be a workaround for exec-shield, as used
27 * by the Linux kernel distributed with Fedora Core and other distros.
29 * To do this, we implement our own shared object loader that reserves memory
30 * that is important to Wine, and then loads the main binary and its ELF
33 * We will try to set up the stack and memory area so that the program that
34 * loads after us (eg. the wine binary) never knows we were here, except that
35 * areas of memory it needs are already magically reserved.
37 * The following memory areas are important to Wine:
38 * 0x00000000 - 0x00110000 the DOS area
39 * 0x80000000 - 0x81000000 the shared heap
40 * ??? - ??? the PE binary load address (usually starting at 0x00400000)
42 * If this program is used as the shared object loader, the only difference
43 * that the loaded programs should see is that this loader will be mapped
44 * into memory when it starts.
48 * References (things I consulted to understand how ELF loading works):
50 * glibc 2.3.2 elf/dl-load.c
51 * http://www.gnu.org/directory/glibc.html
53 * Linux 2.6.4 fs/binfmt_elf.c
54 * ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.4.tar.bz2
56 * Userland exec, by <grugq@hcunix.net>
57 * http://cert.uni-stuttgart.de/archive/bugtraq/2004/01/msg00002.html
59 * The ELF specification:
60 * http://www.linuxbase.org/spec/booksets/LSB-Embedded/LSB-Embedded/book387.html
64 #include "wine/port.h"
70 #include <sys/types.h>
73 #ifdef HAVE_SYS_MMAN_H
74 # include <sys/mman.h>
76 #ifdef HAVE_SYS_SYSCALL_H
77 # include <sys/syscall.h>
88 #ifdef HAVE_SYS_LINK_H
89 # include <sys/link.h>
95 #define ELF_PREFERRED_ADDRESS(loader, maplength, mapstartpref) (mapstartpref)
96 #define ELF_FIXED_ADDRESS(loader, mapstart) ((void) 0)
98 #define MAP_BASE_ADDR(l) 0
101 #define MAP_COPY MAP_PRIVATE
103 #ifndef MAP_NORESERVE
104 #define MAP_NORESERVE 0
107 static struct wine_preload_info preload_info[] =
109 { (void *)0x00000000, 0x00110000 }, /* DOS area */
110 { (void *)0x80000000, 0x01000000 }, /* shared heap */
111 { (void *)0x00110000, 0x0fef0000 }, /* default PE exe range (may be set with WINEPRELOADRESERVE) */
112 { 0, 0 } /* end of list */
120 /* older systems may not define these */
126 #define AT_SYSINFO 32
128 #ifndef AT_SYSINFO_EHDR
129 #define AT_SYSINFO_EHDR 33
132 static unsigned int page_size, page_mask;
133 static char *preloader_start, *preloader_end;
135 struct wld_link_map {
142 ElfW(Addr) l_map_start, l_map_end;
148 * The _start function is the entry and exit point of this program
150 * It calls wld_start, passing a pointer to the args it receives
151 * then jumps to the address wld_start returns.
155 __ASM_GLOBAL_FUNC(_start,
157 "\tleal -128(%esp),%esp\n" /* allocate some space for extra aux values */
158 "\tpushl %eax\n" /* orig stack pointer */
159 "\tpushl %esp\n" /* ptr to orig stack pointer */
161 "\tpopl %ecx\n" /* remove ptr to stack pointer */
162 "\tpopl %esp\n" /* new stack pointer */
163 "\tpush %eax\n" /* ELF interpreter entry point */
169 /* wrappers for Linux system calls */
171 #define SYSCALL_RET(ret) (((ret) < 0 && (ret) > -4096) ? -1 : (ret))
173 static inline __attribute__((noreturn)) void wld_exit( int code )
175 for (;;) /* avoid warning */
176 __asm__ __volatile__( "int $0x80" : : "a" (SYS_exit), "b" (code) );
179 static inline int wld_open( const char *name, int flags )
182 __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_open), "b" (name), "c" (flags) );
183 return SYSCALL_RET(ret);
186 static inline int wld_close( int fd )
189 __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_close), "b" (fd) );
190 return SYSCALL_RET(ret);
193 static inline ssize_t wld_read( int fd, void *buffer, size_t len )
196 __asm__ __volatile__( "int $0x80" : "=a" (ret)
197 : "0" (SYS_read), "b" (fd), "c" (buffer), "d" (len)
199 return SYSCALL_RET(ret);
202 static inline ssize_t wld_write( int fd, const void *buffer, size_t len )
205 __asm__ __volatile__( "int $0x80" : "=a" (ret)
206 : "0" (SYS_write), "b" (fd), "c" (buffer), "d" (len) );
207 return SYSCALL_RET(ret);
210 static inline int wld_mprotect( const void *addr, size_t len, int prot )
213 __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_mprotect), "b" (addr), "c" (len), "d" (prot) );
214 return SYSCALL_RET(ret);
217 static void *wld_mmap( void *start, size_t len, int prot, int flags, int fd, off_t offset )
236 args.offset = offset;
237 __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_mmap), "b" (&args) : "memory" );
238 return (void *)SYSCALL_RET(ret);
241 static inline uid_t wld_getuid(void)
244 __asm__( "int $0x80" : "=a" (ret) : "0" (SYS_getuid) );
248 static inline uid_t wld_geteuid(void)
251 __asm__( "int $0x80" : "=a" (ret) : "0" (SYS_geteuid) );
255 static inline gid_t wld_getgid(void)
258 __asm__( "int $0x80" : "=a" (ret) : "0" (SYS_getgid) );
262 static inline gid_t wld_getegid(void)
265 __asm__( "int $0x80" : "=a" (ret) : "0" (SYS_getegid) );
270 /* replacement for libc functions */
272 static int wld_strcmp( const char *str1, const char *str2 )
274 while (*str1 && (*str1 == *str2)) { str1++; str2++; }
275 return *str1 - *str2;
278 static int wld_strncmp( const char *str1, const char *str2, size_t len )
280 if (len <= 0) return 0;
281 while ((--len > 0) && *str1 && (*str1 == *str2)) { str1++; str2++; }
282 return *str1 - *str2;
285 static inline void *wld_memset( void *dest, int val, size_t len )
288 while (len--) *dst++ = val;
293 * wld_printf - just the basics
295 * %x prints a hex number
298 static void wld_vsprintf(char *str, const char *fmt, va_list args )
300 static const char hex_chars[16] = "0123456789abcdef";
311 unsigned int x = va_arg( args, unsigned int );
313 *str++ = hex_chars[(x>>(i*4))&0xf];
317 char *s = va_arg( args, char * );
330 static void wld_printf(const char *fmt, ... )
335 va_start( args, fmt );
336 wld_vsprintf(buffer, fmt, args );
338 wld_write(2, buffer, strlen(buffer));
341 static __attribute__((noreturn)) void fatal_error(const char *fmt, ... )
346 va_start( args, fmt );
347 wld_vsprintf(buffer, fmt, args );
349 wld_write(2, buffer, strlen(buffer));
355 * Dump interesting bits of the ELF auxv_t structure that is passed
356 * as the 4th parameter to the _start function
358 static void dump_auxiliary( ElfW(auxv_t) *av )
360 #define NAME(at) { at, #at }
361 static const struct { int val; const char *name; } names[] =
377 NAME(AT_SYSINFO_EHDR),
385 for ( ; av->a_type != AT_NULL; av++)
387 for (i = 0; names[i].name; i++) if (names[i].val == av->a_type) break;
388 if (names[i].name) wld_printf("%s = %x\n", names[i].name, av->a_un.a_val);
389 else wld_printf( "%x = %x\n", av->a_type, av->a_un.a_val );
395 * set_auxiliary_values
397 * Set the new auxiliary values
399 static void set_auxiliary_values( ElfW(auxv_t) *av, const ElfW(auxv_t) *new_av,
400 const ElfW(auxv_t) *delete_av, void **stack )
402 int i, j, av_count = 0, new_count = 0, delete_count = 0;
405 /* count how many aux values we have already */
406 while (av[av_count].a_type != AT_NULL) av_count++;
408 /* delete unwanted values */
409 for (j = 0; delete_av[j].a_type != AT_NULL; j++)
411 for (i = 0; i < av_count; i++) if (av[i].a_type == delete_av[j].a_type)
413 av[i].a_type = av[av_count-1].a_type;
414 av[i].a_un.a_val = av[av_count-1].a_un.a_val;
415 av[--av_count].a_type = AT_NULL;
421 /* count how many values we have in new_av that aren't in av */
422 for (j = 0; new_av[j].a_type != AT_NULL; j++)
424 for (i = 0; i < av_count; i++) if (av[i].a_type == new_av[j].a_type) break;
425 if (i == av_count) new_count++;
428 src = (char *)*stack;
429 dst = src - (new_count - delete_count) * sizeof(*av);
430 if (new_count > delete_count) /* need to make room for the extra values */
432 int len = (char *)(av + av_count + 1) - src;
433 for (i = 0; i < len; i++) dst[i] = src[i];
435 else if (new_count < delete_count) /* get rid of unused values */
437 int len = (char *)(av + av_count + 1) - dst;
438 for (i = len - 1; i >= 0; i--) dst[i] = src[i];
441 av -= (new_count - delete_count);
443 /* now set the values */
444 for (j = 0; new_av[j].a_type != AT_NULL; j++)
446 for (i = 0; i < av_count; i++) if (av[i].a_type == new_av[j].a_type) break;
447 if (i < av_count) av[i].a_un.a_val = new_av[j].a_un.a_val;
450 av[av_count].a_type = new_av[j].a_type;
451 av[av_count].a_un.a_val = new_av[j].a_un.a_val;
457 wld_printf("New auxiliary info:\n");
458 dump_auxiliary( av );
465 * Get a field of the auxiliary structure
467 static int get_auxiliary( ElfW(auxv_t) *av, int type, int def_val )
469 for ( ; av->a_type != AT_NULL; av++)
470 if( av->a_type == type ) return av->a_un.a_val;
477 * modelled after _dl_map_object_from_fd() from glibc-2.3.1/elf/dl-load.c
479 * This function maps the segments from an ELF object, and optionally
480 * stores information about the mapping into the auxv_t structure.
482 static void map_so_lib( const char *name, struct wld_link_map *l)
485 unsigned char buf[0x800];
486 ElfW(Ehdr) *header = (ElfW(Ehdr)*)buf;
487 ElfW(Phdr) *phdr, *ph;
488 /* Scan the program header table, collecting its load commands. */
491 ElfW(Addr) mapstart, mapend, dataend, allocend;
495 size_t nloadcmds = 0, maplength;
497 fd = wld_open( name, O_RDONLY );
498 if (fd == -1) fatal_error("%s: could not open\n", name );
500 if (wld_read( fd, buf, sizeof(buf) ) != sizeof(buf))
501 fatal_error("%s: failed to read ELF header\n", name);
503 phdr = (void*) (((unsigned char*)buf) + header->e_phoff);
505 if( ( header->e_ident[0] != 0x7f ) ||
506 ( header->e_ident[1] != 'E' ) ||
507 ( header->e_ident[2] != 'L' ) ||
508 ( header->e_ident[3] != 'F' ) )
509 fatal_error( "%s: not an ELF binary... don't know how to load it\n", name );
511 if( header->e_machine != EM_386 )
512 fatal_error("%s: not an i386 ELF binary... don't know how to load it\n", name );
514 if (header->e_phnum > sizeof(loadcmds)/sizeof(loadcmds[0]))
515 fatal_error( "%s: oops... not enough space for load commands\n", name );
517 maplength = header->e_phnum * sizeof (ElfW(Phdr));
518 if (header->e_phoff + maplength > sizeof(buf))
519 fatal_error( "%s: oops... not enough space for ELF headers\n", name );
524 l->l_phnum = header->e_phnum;
525 l->l_entry = header->e_entry;
528 for (ph = phdr; ph < &phdr[l->l_phnum]; ++ph)
532 wld_printf( "ph = %x\n", ph );
533 wld_printf( " p_type = %x\n", ph->p_type );
534 wld_printf( " p_flags = %x\n", ph->p_flags );
535 wld_printf( " p_offset = %x\n", ph->p_offset );
536 wld_printf( " p_vaddr = %x\n", ph->p_vaddr );
537 wld_printf( " p_paddr = %x\n", ph->p_paddr );
538 wld_printf( " p_filesz = %x\n", ph->p_filesz );
539 wld_printf( " p_memsz = %x\n", ph->p_memsz );
540 wld_printf( " p_align = %x\n", ph->p_align );
545 /* These entries tell us where to find things once the file's
546 segments are mapped in. We record the addresses it says
547 verbatim, and later correct for the run-time load address. */
549 l->l_ld = (void *) ph->p_vaddr;
550 l->l_ldnum = ph->p_memsz / sizeof (Elf32_Dyn);
554 l->l_phdr = (void *) ph->p_vaddr;
559 if ((ph->p_align & page_mask) != 0)
560 fatal_error( "%s: ELF load command alignment not page-aligned\n", name );
562 if (((ph->p_vaddr - ph->p_offset) & (ph->p_align - 1)) != 0)
563 fatal_error( "%s: ELF load command address/offset not properly aligned\n", name );
565 c = &loadcmds[nloadcmds++];
566 c->mapstart = ph->p_vaddr & ~(ph->p_align - 1);
567 c->mapend = ((ph->p_vaddr + ph->p_filesz + page_mask) & ~page_mask);
568 c->dataend = ph->p_vaddr + ph->p_filesz;
569 c->allocend = ph->p_vaddr + ph->p_memsz;
570 c->mapoff = ph->p_offset & ~(ph->p_align - 1);
573 if (ph->p_flags & PF_R)
574 c->prot |= PROT_READ;
575 if (ph->p_flags & PF_W)
576 c->prot |= PROT_WRITE;
577 if (ph->p_flags & PF_X)
578 c->prot |= PROT_EXEC;
583 l->l_interp = ph->p_vaddr;
588 * We don't need to set anything up because we're
589 * emulating the kernel, not ld-linux.so.2
590 * The ELF loader will set up the TLS data itself.
599 /* Now process the load commands and map segments into memory. */
602 /* Length of the sections to be loaded. */
603 maplength = loadcmds[nloadcmds - 1].allocend - c->mapstart;
605 if( header->e_type == ET_DYN )
608 mappref = (ELF_PREFERRED_ADDRESS (loader, maplength, c->mapstart)
609 - MAP_BASE_ADDR (l));
611 /* Remember which part of the address space this object uses. */
612 l->l_map_start = (ElfW(Addr)) wld_mmap ((void *) mappref, maplength,
613 c->prot, MAP_COPY | MAP_FILE,
615 /* wld_printf("set : offset = %x\n", c->mapoff); */
616 /* wld_printf("l->l_map_start = %x\n", l->l_map_start); */
618 l->l_map_end = l->l_map_start + maplength;
619 l->l_addr = l->l_map_start - c->mapstart;
621 wld_mprotect ((caddr_t) (l->l_addr + c->mapend),
622 loadcmds[nloadcmds - 1].allocend - c->mapend,
629 if ((char *)c->mapstart + maplength > preloader_start &&
630 (char *)c->mapstart <= preloader_end)
631 fatal_error( "%s: binary overlaps preloader (%x-%x)\n",
632 name, c->mapstart, (char *)c->mapstart + maplength );
634 ELF_FIXED_ADDRESS (loader, c->mapstart);
637 /* Remember which part of the address space this object uses. */
638 l->l_map_start = c->mapstart + l->l_addr;
639 l->l_map_end = l->l_map_start + maplength;
641 while (c < &loadcmds[nloadcmds])
643 if (c->mapend > c->mapstart)
644 /* Map the segment contents from the file. */
645 wld_mmap ((void *) (l->l_addr + c->mapstart),
646 c->mapend - c->mapstart, c->prot,
647 MAP_FIXED | MAP_COPY | MAP_FILE, fd, c->mapoff);
651 && (ElfW(Off)) c->mapoff <= header->e_phoff
652 && ((size_t) (c->mapend - c->mapstart + c->mapoff)
653 >= header->e_phoff + header->e_phnum * sizeof (ElfW(Phdr))))
654 /* Found the program header in this segment. */
655 l->l_phdr = (void *)(unsigned int) (c->mapstart + header->e_phoff - c->mapoff);
657 if (c->allocend > c->dataend)
659 /* Extra zero pages should appear at the end of this segment,
660 after the data mapped from the file. */
661 ElfW(Addr) zero, zeroend, zeropage;
663 zero = l->l_addr + c->dataend;
664 zeroend = l->l_addr + c->allocend;
665 zeropage = (zero + page_mask) & ~page_mask;
668 * This is different from the dl-load load...
669 * ld-linux.so.2 relies on the whole page being zero'ed
671 zeroend = (zeroend + page_mask) & ~page_mask;
673 if (zeroend < zeropage)
675 /* All the extra data is in the last page of the segment.
676 We can just zero it. */
682 /* Zero the final part of the last page of the segment. */
683 if ((c->prot & PROT_WRITE) == 0)
686 wld_mprotect ((caddr_t) (zero & ~page_mask), page_size, c->prot|PROT_WRITE);
688 wld_memset ((void *) zero, '\0', zeropage - zero);
689 if ((c->prot & PROT_WRITE) == 0)
690 wld_mprotect ((caddr_t) (zero & ~page_mask), page_size, c->prot);
693 if (zeroend > zeropage)
695 /* Map the remaining zero pages in from the zero fill FD. */
697 mapat = wld_mmap ((caddr_t) zeropage, zeroend - zeropage,
698 c->prot, MAP_ANON|MAP_PRIVATE|MAP_FIXED,
706 if (l->l_phdr == NULL) fatal_error("no program header\n");
708 l->l_phdr = (void *)((ElfW(Addr))l->l_phdr + l->l_addr);
709 l->l_entry += l->l_addr;
716 * Find a symbol in the symbol table of the executable loaded
718 static void *find_symbol( const ElfW(Phdr) *phdr, int num, char *var )
720 const ElfW(Dyn) *dyn = NULL;
721 const ElfW(Phdr) *ph;
722 const ElfW(Sym) *symtab = NULL;
723 const char *strings = NULL;
724 uint32_t i, symtabend = 0;
726 /* check the values */
728 wld_printf("%x %x\n", phdr, num );
730 if( ( phdr == NULL ) || ( num == 0 ) )
732 wld_printf("could not find PT_DYNAMIC header entry\n");
736 /* parse the (already loaded) ELF executable's header */
737 for (ph = phdr; ph < &phdr[num]; ++ph)
739 if( PT_DYNAMIC == ph->p_type )
741 dyn = (void *) ph->p_vaddr;
742 num = ph->p_memsz / sizeof (Elf32_Dyn);
746 if( !dyn ) return NULL;
750 if( dyn->d_tag == DT_STRTAB )
751 strings = (const char*) dyn->d_un.d_ptr;
752 if( dyn->d_tag == DT_SYMTAB )
753 symtab = (const ElfW(Sym) *)dyn->d_un.d_ptr;
754 if( dyn->d_tag == DT_HASH )
755 symtabend = *((const uint32_t *)dyn->d_un.d_ptr + 1);
757 wld_printf("%x %x\n", dyn->d_tag, dyn->d_un.d_ptr );
762 if( (!symtab) || (!strings) ) return NULL;
764 for (i = 0; i < symtabend; i++)
766 if( ( ELF32_ST_BIND(symtab[i].st_info) == STT_OBJECT ) &&
767 ( 0 == wld_strcmp( strings+symtab[i].st_name, var ) ) )
770 wld_printf("Found %s -> %x\n", strings+symtab[i].st_name, symtab[i].st_value );
772 return (void*)symtab[i].st_value;
781 * Reserve a range specified in string format
783 static void preload_reserve( const char *str )
786 unsigned long result = 0;
787 void *start = NULL, *end = NULL;
790 for (p = str; *p; p++)
792 if (*p >= '0' && *p <= '9') result = result * 16 + *p - '0';
793 else if (*p >= 'a' && *p <= 'f') result = result * 16 + *p - 'a' + 10;
794 else if (*p >= 'A' && *p <= 'F') result = result * 16 + *p - 'A' + 10;
797 if (!first) goto error;
798 start = (void *)(result & ~page_mask);
804 if (!first) end = (void *)((result + page_mask) & ~page_mask);
805 else if (result) goto error; /* single value '0' is allowed */
808 if (end <= start) start = end = NULL;
809 else if ((char *)end > preloader_start &&
810 (char *)start <= preloader_end)
812 wld_printf( "WINEPRELOADRESERVE range %x-%x overlaps preloader %x-%x\n",
813 start, end, preloader_start, preloader_end );
817 /* entry 2 is for the PE exe */
818 preload_info[2].addr = start;
819 preload_info[2].size = (char *)end - (char *)start;
823 fatal_error( "invalid WINEPRELOADRESERVE value '%s'\n", str );
827 * is_in_preload_range
829 * Check if address of the given aux value is in one of the reserved ranges
831 static int is_in_preload_range( const ElfW(auxv_t) *av, int type )
835 while (av->a_type != type && av->a_type != AT_NULL) av++;
837 if (av->a_type == type)
839 for (i = 0; preload_info[i].size; i++)
841 if ((char *)av->a_un.a_ptr >= (char *)preload_info[i].addr &&
842 (char *)av->a_un.a_ptr < (char *)preload_info[i].addr + preload_info[i].size)
852 * Repeat the actions the kernel would do when loading a dynamically linked .so
853 * Load the binary and then its ELF interpreter.
854 * Note, we assume that the binary is a dynamically linked ELF shared object.
856 void* wld_start( void **stack )
860 char *interp, *reserve = NULL;
861 ElfW(auxv_t) new_av[12], delete_av[3], *av;
862 struct wld_link_map main_binary_map, ld_so_map;
863 struct wine_preload_info **wine_main_preload_info;
866 argv = (char **)pargc + 1;
867 if (*pargc < 2) fatal_error( "Usage: %s wine_binary [args]\n", argv[0] );
869 /* skip over the parameters */
870 p = argv + *pargc + 1;
872 /* skip over the environment */
875 static const char res[] = "WINEPRELOADRESERVE=";
876 if (!wld_strncmp( *p, res, sizeof(res)-1 )) reserve = *p + sizeof(res) - 1;
880 av = (ElfW(auxv_t)*) (p+1);
881 page_size = get_auxiliary( av, AT_PAGESZ, 4096 );
882 page_mask = page_size - 1;
884 preloader_start = (char *)_start - ((unsigned int)_start & page_mask);
885 preloader_end = (char *)((unsigned int)(_end + page_mask) & ~page_mask);
888 wld_printf( "stack = %x\n", *stack );
889 for( i = 0; i < *pargc; i++ ) wld_printf("argv[%x] = %s\n", i, argv[i]);
890 dump_auxiliary( av );
893 /* reserve memory that Wine needs */
894 if (reserve) preload_reserve( reserve );
895 for (i = 0; preload_info[i].size; i++)
896 wld_mmap( preload_info[i].addr, preload_info[i].size,
897 PROT_NONE, MAP_FIXED | MAP_PRIVATE | MAP_ANON | MAP_NORESERVE, -1, 0 );
899 /* load the main binary */
900 map_so_lib( argv[1], &main_binary_map );
902 /* load the ELF interpreter */
903 interp = (char *)main_binary_map.l_addr + main_binary_map.l_interp;
904 map_so_lib( interp, &ld_so_map );
906 /* store pointer to the preload info into the appropriate main binary variable */
907 wine_main_preload_info = find_symbol( main_binary_map.l_phdr, main_binary_map.l_phnum,
908 "wine_main_preload_info" );
909 if (wine_main_preload_info) *wine_main_preload_info = preload_info;
910 else wld_printf( "wine_main_preload_info not found\n" );
912 #define SET_NEW_AV(n,type,val) new_av[n].a_type = (type); new_av[n].a_un.a_val = (val);
913 SET_NEW_AV( 0, AT_PHDR, (unsigned long)main_binary_map.l_phdr );
914 SET_NEW_AV( 1, AT_PHENT, sizeof(ElfW(Phdr)) );
915 SET_NEW_AV( 2, AT_PHNUM, main_binary_map.l_phnum );
916 SET_NEW_AV( 3, AT_PAGESZ, page_size );
917 SET_NEW_AV( 4, AT_BASE, ld_so_map.l_addr );
918 SET_NEW_AV( 5, AT_FLAGS, get_auxiliary( av, AT_FLAGS, 0 ) );
919 SET_NEW_AV( 6, AT_ENTRY, main_binary_map.l_entry );
920 SET_NEW_AV( 7, AT_UID, get_auxiliary( av, AT_UID, wld_getuid() ) );
921 SET_NEW_AV( 8, AT_EUID, get_auxiliary( av, AT_EUID, wld_geteuid() ) );
922 SET_NEW_AV( 9, AT_GID, get_auxiliary( av, AT_GID, wld_getgid() ) );
923 SET_NEW_AV(10, AT_EGID, get_auxiliary( av, AT_EGID, wld_getegid() ) );
924 SET_NEW_AV(11, AT_NULL, 0 );
928 /* delete sysinfo values if addresses conflict */
929 if (is_in_preload_range( av, AT_SYSINFO )) delete_av[i++].a_type = AT_SYSINFO;
930 if (is_in_preload_range( av, AT_SYSINFO_EHDR )) delete_av[i++].a_type = AT_SYSINFO_EHDR;
931 delete_av[i].a_type = AT_NULL;
933 /* get rid of first argument */
934 pargc[1] = pargc[0] - 1;
937 set_auxiliary_values( av, new_av, delete_av, stack );
940 wld_printf("new stack = %x\n", *stack);
941 wld_printf("jumping to %x\n", ld_so_map.l_entry);
944 return (void *)ld_so_map.l_entry;