70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
|
|
|
|
This file is part of Sortix libpthread.
|
|
|
|
Sortix libpthread 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 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
Sortix libpthread 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 Sortix libpthread. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
pthread_initialize.c++
|
|
Prepares the process for pthread usage.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sortix/elf-note.h>
|
|
|
|
// Emit an ELF note containing the size and alignment of struct pthread.
|
|
__attribute__((used))
|
|
static void elf_note_sortix_pthread_size()
|
|
{
|
|
asm volatile (
|
|
".pushsection .note.sortix,\"a\",@note\n\t"
|
|
".align 4\n\t"
|
|
".long 2f-1f\n\t" // namesz
|
|
".long 4f-3f\n\t" // descsz
|
|
".long %c0\n" // type
|
|
"1:\n\t"
|
|
".string \"Sortix\"\n" // name
|
|
"2:\n\t"
|
|
".align 4\n"
|
|
"3:\n\t"
|
|
#if defined(__x86_64__)
|
|
".quad %c1\n"
|
|
".quad %c2\n"
|
|
#elif defined(__i386__)
|
|
".long %c1\n"
|
|
".long %c2\n"
|
|
#endif
|
|
"4:\n\t"
|
|
".align 4\n\t"
|
|
".popsection\n\t"
|
|
:: "n"(ELF_NOTE_SORTIX_UTHREAD_SIZE),
|
|
"n"(sizeof(struct pthread)),
|
|
"n"(alignof(struct pthread))
|
|
);
|
|
}
|
|
|
|
extern "C" void pthread_initialize(void)
|
|
{
|
|
}
|