diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/init-first.c | 60 |
2 files changed, 44 insertions, 22 deletions
@@ -1,3 +1,9 @@ +2004-09-11 Roland McGrath <roland@frob.com> + + * sysdeps/mach/hurd/i386/init-first.c (init1) [! SHARED]: + Set _dl_phdr and _dl_phnum. + (init1): When bootstrap task, bail early and never examine *D. + 2004-09-11 Alfred M. Szmidt <ams@kemisten.nu> * sysdeps/mach/hurd/i386/tls.h (__i386_set_gdt) [!HAVE_I386_SET_GDT]: diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c index 14b606494e..1b2dee5c9d 100644 --- a/sysdeps/mach/hurd/i386/init-first.c +++ b/sysdeps/mach/hurd/i386/init-first.c @@ -111,35 +111,51 @@ init1 (int argc, char *arg0, ...) /* If we are the bootstrap task started by the kernel, then after the environment pointers there is no Hurd data block; the argument strings start there. */ - if ((void *) d != argv[0]) + if ((void *) d == argv[0]) { - _hurd_init_dtable = d->dtable; - _hurd_init_dtablesize = d->dtablesize; - - { - /* Check if the stack we are now on is different from - the one described by _hurd_stack_{base,size}. */ - - char dummy; - const vm_address_t newsp = (vm_address_t) &dummy; - - if (d->stack_size != 0 && (newsp < d->stack_base || - newsp - d->stack_base > d->stack_size)) - /* The new stack pointer does not intersect with the - stack the exec server set up for us, so free that stack. */ - __vm_deallocate (__mach_task_self (), d->stack_base, d->stack_size); - } +#ifndef SHARED + /* We may need to see our own phdrs, e.g. for TLS setup. + Try the usual kludge to find the headers without help from + the exec server. */ + extern const void _start; + const ElfW(Ehdr) *const ehdr = &_start; + _dl_phdr = (const ElfW(Phdr) *) ((const void *) ehdr + ehdr->e_phoff); + _dl_phnum = ehdr->e_phnum; + assert (ehdr->e_phentsize == sizeof (ElfW(Phdr))); +#endif + return; } - if ((void *) d != argv[0] && (d->portarray || d->intarray)) +#ifndef SHARED + __libc_enable_secure = d->flags & EXEC_SECURE; + + _dl_phdr = (const ElfW(Phdr) *) d->phdr; + _dl_phnum = d->phdr_size / sizeof (ElfW(Phdr)); + assert (d->phdr_size % sizeof (ElfW(Phdr)) == 0); +#endif + + _hurd_init_dtable = d->dtable; + _hurd_init_dtablesize = d->dtablesize; + + { + /* Check if the stack we are now on is different from + the one described by _hurd_stack_{base,size}. */ + + char dummy; + const vm_address_t newsp = (vm_address_t) &dummy; + + if (d->stack_size != 0 && (newsp < d->stack_base || + newsp - d->stack_base > d->stack_size)) + /* The new stack pointer does not intersect with the + stack the exec server set up for us, so free that stack. */ + __vm_deallocate (__mach_task_self (), d->stack_base, d->stack_size); + } + + if (d->portarray || d->intarray) /* Initialize library data structures, start signal processing, etc. */ _hurd_init (d->flags, argv, d->portarray, d->portarraysize, d->intarray, d->intarraysize); - -#ifndef SHARED - __libc_enable_secure = d->flags & EXEC_SECURE; -#endif } |