diff options
Diffstat (limited to 'linuxthreads/sysdeps')
| -rw-r--r-- | linuxthreads/sysdeps/arm/pspinlock.c | 82 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/arm/pt-machine.h | 55 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h | 145 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S | 80 |
4 files changed, 0 insertions, 362 deletions
diff --git a/linuxthreads/sysdeps/arm/pspinlock.c b/linuxthreads/sysdeps/arm/pspinlock.c deleted file mode 100644 index 665e270b69..0000000000 --- a/linuxthreads/sysdeps/arm/pspinlock.c +++ /dev/null @@ -1,82 +0,0 @@ -/* POSIX spinlock implementation. Arm version. - Copyright (C) 2000 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; 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 <errno.h> -#include <pthread.h> -#include "internals.h" - - -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - unsigned int val; - - do - asm volatile ("swp %0, %1, [%2]" - : "=r" (val) - : "0" (1), "r" (lock) - : "memory"); - while (val != 0); - - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - unsigned int val; - - asm volatile ("swp %0, %1, [%2]" - : "=r" (val) - : "0" (1), "r" (lock) - : "memory"); - - return val ? EBUSY : 0; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - return *lock = 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ - /* We can ignore the `pshared' parameter. Since we are busy-waiting - all processes which can access the memory location `lock' points - to can use the spinlock. */ - return *lock = 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/arm/pt-machine.h b/linuxthreads/sysdeps/arm/pt-machine.h deleted file mode 100644 index a4c2f314cb..0000000000 --- a/linuxthreads/sysdeps/arm/pt-machine.h +++ /dev/null @@ -1,55 +0,0 @@ -/* Machine-dependent pthreads configuration and inline functions. - ARM version. - Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Philip Blundell <philb@gnu.org>. - - 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; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#ifndef _PT_MACHINE_H -#define _PT_MACHINE_H 1 - -#ifndef PT_EI -# define PT_EI extern inline __attribute__ ((always_inline)) -#endif - -extern long int testandset (int *spinlock); -extern int __compare_and_swap (long int *p, long int oldval, long int newval); - -/* This will not work on ARM1 or ARM2 because SWP is lacking on those - machines. Unfortunately we have no way to detect this at compile - time; let's hope nobody tries to use one. */ - -/* Spinlock implementation; required. */ -PT_EI long int -testandset (int *spinlock) -{ - register unsigned int ret; - - __asm__ __volatile__("swp %0, %1, [%2]" - : "=r"(ret) - : "0"(1), "r"(spinlock)); - - return ret; -} - - -/* Get some notion of the current stack. Need not be exactly the top - of the stack, just something somewhere in the current frame. */ -#define CURRENT_STACK_FRAME stack_pointer -register char * stack_pointer __asm__ ("sp"); - -#endif /* pt-machine.h */ diff --git a/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h deleted file mode 100644 index 019bd54913..0000000000 --- a/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h +++ /dev/null @@ -1,145 +0,0 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Phil Blundell <pb@nexus.co.uk>, 2003. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> -#ifndef __ASSEMBLER__ -# include <linuxthreads/internals.h> -#endif - -#if !defined NOT_IN_libc || defined IS_IN_libpthread - -/* We push lr onto the stack, so we have to use ldmib instead of ldmia - to find the saved arguments. */ -# ifdef PIC -# undef DOARGS_5 -# undef DOARGS_6 -# undef DOARGS_7 -# define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $8]; -# define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmib ip, {r4, r5}; -# define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmib ip, {r4, r5, r6}; -# endif - -# undef PSEUDO_RET -# define PSEUDO_RET \ - ldrcc pc, [sp], $4; \ - ldr lr, [sp], $4; \ - b PLTJMP(SYSCALL_ERROR) - -# undef PSEUDO -# define PSEUDO(name, syscall_name, args) \ - .section ".text"; \ - PSEUDO_PROLOGUE; \ - ENTRY (name); \ - SINGLE_THREAD_P_INT; \ - bne .Lpseudo_cancel; \ - DO_CALL (syscall_name, args); \ - cmn r0, $4096; \ - PSEUDO_RET_MOV; \ - .Lpseudo_cancel: \ - MAYBE_SAVE_LR; \ - DOCARGS_##args; /* save syscall args around CENABLE. */ \ - CENABLE; \ - mov ip, r0; /* put mask in safe place. */ \ - UNDOCARGS_##args; /* restore syscall args. */ \ - swi SYS_ify (syscall_name); /* do the call. */ \ - str r0, [sp, $-4]!; /* save syscall return value. */ \ - mov r0, ip; /* get mask back. */ \ - CDISABLE; \ - ldr r0, [sp], $4; /* retrieve return value. */ \ - UNDOC2ARGS_##args; /* fix register damage. */ \ - cmn r0, $4096; - -# define DOCARGS_0 -# define UNDOCARGS_0 -# define UNDOC2ARGS_0 - -# define DOCARGS_1 str r0, [sp, #-4]!; -# define UNDOCARGS_1 ldr r0, [sp], #4; -# define UNDOC2ARGS_1 - -# define DOCARGS_2 str r1, [sp, #-4]!; str r0, [sp, #-4]!; -# define UNDOCARGS_2 ldr r0, [sp], #4; ldr r1, [sp], #4; -# define UNDOC2ARGS_2 - -# define DOCARGS_3 str r2, [sp, #-4]!; str r1, [sp, #-4]!; str r0, [sp, #-4]!; -# define UNDOCARGS_3 ldr r0, [sp], #4; ldr r1, [sp], #4; ldr r2, [sp], #4 -# define UNDOC2ARGS_3 - -# define DOCARGS_4 stmfd sp!, {r0-r3} -# define UNDOCARGS_4 ldmfd sp!, {r0-r3} -# define UNDOC2ARGS_4 - -# define DOCARGS_5 stmfd sp!, {r0-r3} -# define UNDOCARGS_5 ldmfd sp, {r0-r3}; str r4, [sp, #-4]!; ldr r4, [sp, #24] -# define UNDOC2ARGS_5 ldr r4, [sp], #20 - -# ifdef IS_IN_libpthread -# define CENABLE bl PLTJMP(__pthread_enable_asynccancel) -# define CDISABLE bl PLTJMP(__pthread_disable_asynccancel) -# define __local_multiple_threads __pthread_multiple_threads -# else -# define CENABLE bl PLTJMP(__libc_enable_asynccancel) -# define CDISABLE bl PLTJMP(__libc_disable_asynccancel) -# define __local_multiple_threads __libc_multiple_threads -# endif - -# ifndef __ASSEMBLER__ -extern int __local_multiple_threads attribute_hidden; -# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1) -# else -# if !defined PIC -# define SINGLE_THREAD_P_INT \ - ldr ip, =__local_multiple_threads; \ - ldr ip, [ip]; \ - teq ip, #0; -# define SINGLE_THREAD_P SINGLE_THREAD_P_INT -# define MAYBE_SAVE_LR \ - str lr, [sp, $-4]!; -# define PSEUDO_RET_MOV \ - RETINSTR(cc, lr); \ - b PLTJMP(SYSCALL_ERROR) -# define PSEUDO_PROLOGUE -# else -# define SINGLE_THREAD_P_PIC(reg) \ - ldr ip, 1b; \ - ldr reg, 2b; \ -3: \ - add ip, pc, ip; \ - ldr ip, [ip, reg]; \ - teq ip, #0; -# define SINGLE_THREAD_P_INT \ - str lr, [sp, $-4]!; \ - SINGLE_THREAD_P_PIC(lr) -# define SINGLE_THREAD_P \ - SINGLE_THREAD_P_INT; \ - ldr lr, [sp], $4 -# define PSEUDO_PROLOGUE \ - 1: .word _GLOBAL_OFFSET_TABLE_ - 3f - 8; \ - 2: .word __local_multiple_threads(GOTOFF); -# define MAYBE_SAVE_LR /* lr already saved */ -# define PSEUDO_RET_MOV PSEUDO_RET -# endif -# endif - -#elif !defined __ASSEMBLER__ - -/* This code should never be used but we define it anyhow. */ -# define SINGLE_THREAD_P (1) - -#endif diff --git a/linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S deleted file mode 100644 index 2708c701eb..0000000000 --- a/linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S +++ /dev/null @@ -1,80 +0,0 @@ -/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Philip Blundell <philb@gnu.org>. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep-cancel.h> -#define _ERRNO_H 1 -#include <bits/errno.h> -#include <kernel-features.h> - -/* Clone the calling process, but without copying the whole address space. - The calling process is suspended until the new process exits or is - replaced by a call to `execve'. Return -1 for errors, 0 to the new process, - and the process ID of the new process to the old process. */ - - PSEUDO_PROLOGUE - -ENTRY (__vfork) - -#ifdef __NR_vfork - -#ifdef SHARED - ldr ip, 1f - ldr r0, 2f -3: add ip, pc, ip - ldr r0, [ip, r0] -#else - ldr r0, 1f -#endif - movs r0, r0 - bne HIDDEN_JUMPTARGET (__fork) - - swi __NR_vfork - cmn a1, #4096 - RETINSTR(cc, lr) - -#ifndef __ASSUME_VFORK_SYSCALL - /* Check if vfork syscall is known at all. */ - cmn a1, #ENOSYS - bne PLTJMP(C_SYMBOL_NAME(__syscall_error)) -#endif - -#endif - -#ifndef __ASSUME_VFORK_SYSCALL - /* If we don't have vfork, fork is close enough. */ - swi __NR_fork - cmn a1, #4096 - RETINSTR(cc, lr) -#elif !defined __NR_vfork -# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined" -#endif - b PLTJMP(C_SYMBOL_NAME(__syscall_error)) - -#ifdef SHARED -1: .word _GLOBAL_OFFSET_TABLE_ - 3b - 8 -2: .word __libc_pthread_functions(GOTOFF) -#else - .weak pthread_create -1: .word pthread_create -#endif - -PSEUDO_END (__vfork) -libc_hidden_def (__vfork) - -weak_alias (__vfork, vfork) |