diff options
Diffstat (limited to 'sysdeps/mach/hurd/i386')
-rw-r--r-- | sysdeps/mach/hurd/i386/htl/Implies | 1 | ||||
-rw-r--r-- | sysdeps/mach/hurd/i386/htl/pt-setup.c | 110 |
2 files changed, 1 insertions, 110 deletions
diff --git a/sysdeps/mach/hurd/i386/htl/Implies b/sysdeps/mach/hurd/i386/htl/Implies index 7a0f99d772..fe3bd983b8 100644 --- a/sysdeps/mach/hurd/i386/htl/Implies +++ b/sysdeps/mach/hurd/i386/htl/Implies @@ -1,2 +1,3 @@ mach/hurd/htl +mach/hurd/x86/htl i386/htl diff --git a/sysdeps/mach/hurd/i386/htl/pt-setup.c b/sysdeps/mach/hurd/i386/htl/pt-setup.c deleted file mode 100644 index 94caed82b5..0000000000 --- a/sysdeps/mach/hurd/i386/htl/pt-setup.c +++ /dev/null @@ -1,110 +0,0 @@ -/* Setup thread stack. Hurd/i386 version. - Copyright (C) 2000-2023 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 - <https://www.gnu.org/licenses/>. */ - -#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 | - ----------------- - */ - -/* 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 - + ((thread->guardsize + __vm_page_size - 1) - / __vm_page_size) * __vm_page_size); - - if (start_routine != NULL) - { - /* And then the call frame. */ - top -= 3; - top = (uintptr_t *) ((uintptr_t) top & ~0xf); - top[2] = (uintptr_t) arg; /* Argument to START_ROUTINE. */ - top[1] = (uintptr_t) start_routine; - top[0] = (uintptr_t) thread; - *--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) (struct __pthread *, void *(*)(void *), - void *), void *(*start_routine) (void *), - void *arg) -{ - tcbhead_t *tcb; - error_t err; - mach_port_t ktid; - - thread->mcontext.pc = entry_point; - thread->mcontext.sp = stack_setup (thread, start_routine, arg); - - ktid = __mach_thread_self (); - if (thread->kernel_thread == ktid) - /* Fix up the TCB for the main thread. The C library has already - installed a TCB, which we want to keep using. This TCB must not - be freed so don't register it in the thread structure. On the - other hand, it's not yet possible to reliably release a TCB. - Leave the unused one registered so that it doesn't leak. The - only thing left to do is to correctly set the `self' member in - the already existing TCB. */ - tcb = THREAD_SELF; - else - { - err = __thread_set_pcsptp (thread->kernel_thread, - 1, thread->mcontext.pc, - 1, thread->mcontext.sp, - 1, thread->tcb); - assert_perror (err); - tcb = thread->tcb; - } - __mach_port_deallocate (__mach_task_self (), ktid); - - tcb->self = thread->kernel_thread; - - return 0; -} |