diff options
Diffstat (limited to 'libpthread/sysdeps/mach/hurd/ia32/pt-setup.c')
-rw-r--r-- | libpthread/sysdeps/mach/hurd/ia32/pt-setup.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c b/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c deleted file mode 100644 index 5420dc8e..00000000 --- a/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c +++ /dev/null @@ -1,108 +0,0 @@ -/* Setup thread stack. Hurd/i386 version. - Copyright (C) 2000, 2002, 2005, 2007, 2008 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <stdint.h> -#include <assert.h> -#include <mach.h> - -#include <pt-internal.h> - -/* The stack layout used on the i386 is: - - ----------------- - | ARG | - ----------------- - | START_ROUTINE | - ----------------- - | 0 | - ----------------- - | | - | Fast TSD | - | | - ----------------- - - We need to reserve __hurd_threadvar_max `unsigned long int's' of - (fast) thread-specific data (TSD) for the Hurd. */ - -/* Set up the stack for THREAD, such that it appears as if - START_ROUTINE and ARG were passed to the new thread's entry-point. - Return the stack pointer for the new thread. */ -static void * -stack_setup (struct __pthread *thread, - void *(*start_routine)(void *), void *arg) -{ - error_t err; - uintptr_t *bottom, *top; - - /* Calculate the top of the new stack. */ - bottom = thread->stackaddr; - top = (uintptr_t *) ((uintptr_t) bottom + thread->stacksize); - - /* Next, make room for the TSDs. */ - top -= __hurd_threadvar_max; - - /* Save the self pointer. */ - top[_HURD_THREADVAR_THREAD] = (uintptr_t) thread; - - if (start_routine) - { - /* And then the call frame. */ - top -= 2; - top = (uintptr_t *) ((uintptr_t) top & ~0xf); - top[1] = (uintptr_t) arg; /* Argument to START_ROUTINE. */ - top[0] = (uintptr_t) start_routine; - *--top = 0; /* Fake return address. */ - } - - if (thread->guardsize) - { - err = __vm_protect (__mach_task_self (), (vm_address_t) bottom, - thread->guardsize, 0, 0); - assert_perror (err); - } - - return top; -} - -int -__pthread_setup (struct __pthread *thread, - void (*entry_point)(void *(*)(void *), void *), - void *(*start_routine)(void *), void *arg) -{ - error_t err; - mach_port_t ktid; - - thread->mcontext.pc = entry_point; - thread->mcontext.sp = stack_setup (thread, start_routine, arg); - - thread->tcb->self = thread->kernel_thread; - - ktid = __mach_thread_self (); - if (thread->kernel_thread != ktid) - { - err = __thread_set_pcsptp (thread->kernel_thread, - 1, thread->mcontext.pc, - 1, thread->mcontext.sp, - 1, thread->tcb); - assert_perror (err); - } - __mach_port_deallocate (__mach_task_self (), ktid); - - return 0; -} |