glibc/mach/setup-thread.c
Paul Eggert 5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:

sed -ri '
  s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
  s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
  $(find $(git ls-files) -prune -type f \
      ! -name '*.po' \
      ! -name 'ChangeLog*' \
      ! -path COPYING ! -path COPYING.LIB \
      ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
      ! -path manual/texinfo.tex ! -path scripts/config.guess \
      ! -path scripts/config.sub ! -path scripts/install-sh \
      ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
      ! -path INSTALL ! -path  locale/programs/charmap-kw.h \
      ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
      ! '(' -name configure \
            -execdir test -f configure.ac -o -f configure.in ';' ')' \
      ! '(' -name preconfigure \
            -execdir test -f preconfigure.ac ';' ')' \
      -print)

and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:

  chmod a+x sysdeps/unix/sysv/linux/riscv/configure
  # Omit irrelevant whitespace and comment-only changes,
  # perhaps from a slightly-different Autoconf version.
  git checkout -f \
    sysdeps/csky/configure \
    sysdeps/hppa/configure \
    sysdeps/riscv/configure \
    sysdeps/unix/sysv/linux/csky/configure
  # Omit changes that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
  git checkout -f \
    sysdeps/powerpc/powerpc64/ppc-mcount.S \
    sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
  # Omit change that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
  git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00

108 lines
3.3 KiB
C

/* Copyright (C) 1991-2019 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 <mach.h>
#include <thread_state.h>
#include <string.h>
#include <mach/machine/vm_param.h>
#include <ldsodefs.h>
#include "sysdep.h" /* Defines stack direction. */
#define STACK_SIZE (16 * 1024 * 1024) /* 16MB, arbitrary. */
/* Give THREAD a stack and set it to run at PC when resumed.
If *STACK_SIZE is nonzero, that size of stack is allocated.
If *STACK_BASE is nonzero, that stack location is used.
If STACK_BASE is not null it is filled in with the chosen stack base.
If STACK_SIZE is not null it is filled in with the chosen stack size.
Regardless, an extra page of red zone is allocated off the end; this
is not included in *STACK_SIZE. */
kern_return_t
__mach_setup_thread (task_t task, thread_t thread, void *pc,
vm_address_t *stack_base, vm_size_t *stack_size)
{
kern_return_t error;
struct machine_thread_state ts;
mach_msg_type_number_t tssize = MACHINE_THREAD_STATE_COUNT;
vm_address_t stack;
vm_size_t size;
int anywhere;
size = stack_size ? *stack_size ? : STACK_SIZE : STACK_SIZE;
stack = stack_base ? *stack_base ? : 0 : 0;
anywhere = !stack_base || !*stack_base;
error = __vm_allocate (task, &stack, size + __vm_page_size, anywhere);
if (error)
return error;
if (stack_size)
*stack_size = size;
memset (&ts, 0, sizeof (ts));
MACHINE_THREAD_STATE_SET_PC (&ts, pc);
#ifdef STACK_GROWTH_DOWN
if (stack_base)
*stack_base = stack + __vm_page_size;
ts.SP = stack + __vm_page_size + size;
#elif defined (STACK_GROWTH_UP)
if (stack_base)
*stack_base = stack;
ts.SP = stack;
stack += size;
#else
#error stack direction unknown
#endif
/* Create the red zone. */
if (error = __vm_protect (task, stack, __vm_page_size, 0, VM_PROT_NONE))
return error;
return __thread_set_state (thread, MACHINE_NEW_THREAD_STATE_FLAVOR,
(natural_t *) &ts, tssize);
}
weak_alias (__mach_setup_thread, mach_setup_thread)
/* Give THREAD a TLS area. */
kern_return_t
__mach_setup_tls (thread_t thread)
{
kern_return_t error;
struct machine_thread_state ts;
mach_msg_type_number_t tssize = MACHINE_THREAD_STATE_COUNT;
tcbhead_t *tcb;
tcb = _dl_allocate_tls (NULL);
if (tcb == NULL)
return KERN_RESOURCE_SHORTAGE;
if (error = __thread_get_state (thread, MACHINE_THREAD_STATE_FLAVOR,
(natural_t *) &ts, &tssize))
return error;
assert (tssize == MACHINE_THREAD_STATE_COUNT);
_hurd_tls_new (thread, &ts, tcb);
error = __thread_set_state (thread, MACHINE_THREAD_STATE_FLAVOR,
(natural_t *) &ts, tssize);
return error;
}
weak_alias (__mach_setup_tls, mach_setup_tls)