diff options
Diffstat (limited to 'sysdeps/mach/hurd/powerpc/init-first.c')
| -rw-r--r-- | sysdeps/mach/hurd/powerpc/init-first.c | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/sysdeps/mach/hurd/powerpc/init-first.c b/sysdeps/mach/hurd/powerpc/init-first.c deleted file mode 100644 index 9531b5a6e6..0000000000 --- a/sysdeps/mach/hurd/powerpc/init-first.c +++ /dev/null @@ -1,342 +0,0 @@ -/* Initialization code run first thing by the ELF startup code. PowerPC/Hurd. - Copyright (C) 1995-2012 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C 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. - - The GNU C 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 the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <assert.h> -#include <ctype.h> -#include <hurd.h> -#include <stdio.h> -#include <unistd.h> -#include <string.h> -#include <sysdep.h> -#include <set-hooks.h> -#include "hurdstartup.h" -#include "hurdmalloc.h" /* XXX */ - -extern void __mach_init (void); -extern void __init_misc (int, char **, char **); -#ifdef USE_NONOPTION_FLAGS -extern void __getopt_clean_environment (char **); -#endif -#ifndef SHARED -extern void _dl_non_dynamic_init (void) internal_function; -#endif -extern void __libc_global_ctors (void); - -unsigned int __hurd_threadvar_max; -unsigned long int __hurd_threadvar_stack_offset; -unsigned long int __hurd_threadvar_stack_mask; - -#ifndef SHARED -int __libc_enable_secure; -#endif -int __libc_multiple_libcs attribute_hidden = 1; - -extern int __libc_argc attribute_hidden; -extern char **__libc_argv attribute_hidden; -extern char **_dl_argv; - -void *(*_cthread_init_routine) (void); /* Returns new SP to use. */ -void (*_cthread_exit_routine) (int status) __attribute__ ((__noreturn__)); - -#ifndef SHARED -static unsigned int return_address; /* Make init1 return to _start. */ -#endif - -/* Things that want to be run before _hurd_init or much anything else. - Importantly, these are called before anything tries to use malloc. */ -DEFINE_HOOK (_hurd_preinit_hook, (void)); - - -/* We call this once the Hurd magic is all set up and we are ready to be a - Posixoid program. This does the same things the generic version does. */ -static void internal_function -posixland_init (int argc, char **argv, char **envp) -{ - asm ("li 3,0xbb; .long 0"); - __libc_argc = argc; - __libc_argv = argv; - __environ = envp; - -#ifndef SHARED - _dl_non_dynamic_init (); -#endif - __init_misc (argc, argv, envp); - -#ifdef USE_NONOPTION_FLAGS - /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (__environ); -#endif - - /* Initialize ctype data. */ - __ctype_init (); - -#if defined SHARED && !defined NO_CTORS_DTORS_SECTIONS - __libc_global_ctors (); -#endif -} - - -static void -init1 (int *data) -{ - int argc = *data; - char **argv = (char **) &data[1]; - char **envp = &argv[argc + 1]; - struct hurd_startup_data *d; - - while (*envp) - ++envp; - d = (void *) ++envp; - - /* 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. */ - /* OSF Mach starts the bootstrap task with argc == 0. - XXX This fails if a non-bootstrap task gets started - with argc == 0. */ - if (argc && (void *) d != argv[0]) - { - _hurd_init_dtable = d->dtable; - _hurd_init_dtablesize = d->dtablesize; - -#if 0 /* We can't free the old stack because it contains the argument strings. */ - { - /* 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); - } -#endif - } - - if (argc && (void *) d != argv[0] && (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 -} - - -static inline void -init (int *data) -{ - int argc = *data; - char **argv = (void *) (data + 1); - char **envp = &argv[argc + 1]; - struct hurd_startup_data *d; - unsigned long int threadvars[_HURD_THREADVAR_MAX]; - - /* Provide temporary storage for thread-specific variables on the startup - stack so the cthreads initialization code can use them for malloc et al, - or so we can use malloc below for the real threadvars array. */ - memset (threadvars, 0, sizeof threadvars); - __hurd_threadvar_stack_offset = (unsigned long int) threadvars; - - while (*envp) - ++envp; - d = (void *) ++envp; - - /* The user might have defined a value for this, to get more variables. - Otherwise it will be zero on startup. We must make sure it is set - properly before before cthreads initialization, so cthreads can know - how much space to leave for thread variables. */ - if (__hurd_threadvar_max < _HURD_THREADVAR_MAX) - __hurd_threadvar_max = _HURD_THREADVAR_MAX; - - - /* After possibly switching stacks, call `init1' (above) with the user - code as the return address, and the argument data immediately above - that on the stack. */ - - if (_cthread_init_routine) - { - /* Initialize cthreads, which will allocate us a new stack to run on. */ - void *newsp = (*_cthread_init_routine) (); - struct hurd_startup_data *od; -#ifdef SHARED - void *oldsp; - unsigned int i, data_offset; -#endif - - /* Copy per-thread variables from that temporary - area onto the new cthread stack. */ - memcpy (__hurd_threadvar_location_from_sp (0, newsp), - threadvars, sizeof threadvars); - - /* Copy the argdata from the old stack to the new one. */ - newsp = memcpy (newsp - ((char *) &d[1] - (char *) data), data, - (char *) d - (char *) data); - -#ifdef SHARED - /* And readjust the dynamic linker's idea of where the argument - vector lives. */ - assert (_dl_argv == argv); - _dl_argv = (void *) ((int *) newsp + 1); -#endif - - /* Set up the Hurd startup data block immediately following - the argument and environment pointers on the new stack. */ - od = (newsp + ((char *) d - (char *) data)); - if (!argc || (void *) argv[0] == d) - /* We were started up by the kernel with arguments on the stack. - There is no Hurd startup data, so zero the block. */ - memset (od, 0, sizeof *od); - else - /* Copy the Hurd startup data block to the new stack. */ - *od = *d; - -#ifndef SHARED - asm ("mtlr %0; mr 1,%1; li 0,0; mr 3,%1; stwu 0,-16(1); b init1" - : : "r" (return_address), "r" (newsp)); - (void) init1; /* To avoid `defined but not used' warning. */ - /* NOTREACHED */ -#else - /* Copy the rest of the stack. Don't call a function to do that, - because that will alter the current stack. */ - asm ("mr %0,1" : "=r" (oldsp)); - data_offset = (unsigned int) data - (unsigned int) oldsp; - newsp -= data_offset; - for (i = 0; i < data_offset / 4; i++) - ((unsigned int *)newsp)[i] = ((unsigned int *)oldsp)[i]; - - /* Relocate stack frames. */ - { - unsigned int *oldframe0 = (unsigned int *)oldsp; - unsigned int *oldframe1 = *(unsigned int **)oldframe0; - unsigned int *oldframe2 = *(unsigned int **)oldframe1; - unsigned int *newframe0 = (unsigned int *)newsp; - unsigned int *newframe1 = newframe0 + (unsigned int)(oldframe1 - oldframe0); - unsigned int *newframe2 = newframe1 + (unsigned int)(oldframe2 - oldframe1); - *(unsigned int **)newframe0 = newframe1; - *(unsigned int **)newframe1 = newframe2; - } - - asm ("mr 1,%0; mr 31,%0" : : "r" (newsp)); /* XXX */ - init1 (newsp + data_offset); -#endif - } - else - { - /* We are not using cthreads, so we will have just a single allocated - area for the per-thread variables of the main user thread. */ - unsigned long int *array; - unsigned int i; - - array = malloc (__hurd_threadvar_max * sizeof (unsigned long int)); - if (array == NULL) - __libc_fatal ("Can't allocate single-threaded thread variables."); - - /* Copy per-thread variables from the temporary array into the - newly malloc'd space. */ - memcpy (array, threadvars, sizeof threadvars); - __hurd_threadvar_stack_offset = (unsigned long int) array; - for (i = _HURD_THREADVAR_MAX; i < __hurd_threadvar_max; ++i) - array[i] = 0; - -#ifndef SHARED - asm ("mr 3,%0; mtlr %1; addi 1,3,-16; b init1" - : : "r" (data), "r" (return_address)); - /* NOTREACHED */ -#else - init1 (data); -#endif - } -} - - -/* Do the first essential initializations that must precede all else. */ -static inline void -first_init (void) -{ - /* Initialize data structures so we can do RPCs. */ - __mach_init (); - - RUN_HOOK (_hurd_preinit_hook, ()); -} - -#ifdef SHARED -/* This function is called specially by the dynamic linker to do early - initialization of the shared C library before normal initializers - expecting a Posixoid environment can run. It gets called with the - stack set up just as the user will see it, so it can switch stacks. */ - -void -_dl_init_first (int argc, ...) -{ - asm ("li 3,0xaa; .long 0"); - first_init (); - - init (&argc); -} -#endif - - -#ifdef SHARED -/* The regular posixland initialization is what goes into libc's - normal initializer. */ -/* NOTE! The linker notices the magical name `_init' and sets the DT_INIT - pointer in the dynamic section based solely on that. It is convention - for this function to be in the `.init' section, but the symbol name is - the only thing that really matters!! */ -strong_alias (posixland_init, _init); - - -void -__libc_init_first (int argc, char **argv, char **envp) -{ - /* Everything was done in the shared library initializer, _init. */ -} -#else -strong_alias (posixland_init, __libc_init_first); - - -void -_hurd_stack_setup (int *data) -{ - register unsigned int address; - asm ("mflr %0" : "=r" (address)); - return_address = address; - - first_init (); - - _hurd_startup ((void **) data, &init); -} -#endif - - -/* This function is defined here so that if this file ever gets into - ld.so we will get a link error. Having this file silently included - in ld.so causes disaster, because the _init definition above will - cause ld.so to gain an init function, which is not a cool thing. */ - -void -_dl_start (void) -{ - abort (); -} |