diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/nios/pt-machine.h | 67 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/nios2/pt-machine.h | 58 |
2 files changed, 125 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/nios/pt-machine.h b/libpthread/linuxthreads/sysdeps/nios/pt-machine.h new file mode 100644 index 000000000..5d82b8d16 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/nios/pt-machine.h @@ -0,0 +1,67 @@ +/* Machine-dependent pthreads configuration and inline functions. + ARM version. + Copyright (C) 1997, 1998 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 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. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline +#endif + +extern long int testandset (int *spinlock); +/* Spinlock implementation; required. */ +/* it is weird and dangerous to disable interrupt in userspace, but for nios + what else we can do before we have a swap like instruction? This is better + than nothing + */ +PT_EI long int +testandset (int *spinlock) +{ + unsigned int ret; + + __asm__ __volatile__("pfx 8\n\t" + "wrctl %1 ; disable interrupt\n\t" + "nop\n\t" + "nop\n\t" + "ld %0, [%2]\n\t" + "st [%2], %1\n\t" + "pfx 9\n\t" + "wrctl %1 ; enable interrupt\n\t" + "nop\n\t" + "nop\n\t" + : "=&r"(ret) + : "r"(1), "r"(spinlock) + : "memory"); + + 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"); + +/* nios needs more because of reg windows */ +#define THREAD_MANAGER_STACK_SIZE (32*1024) +#define STACK_SIZE (32*1024) + +#endif /* pt-machine.h */ diff --git a/libpthread/linuxthreads/sysdeps/nios2/pt-machine.h b/libpthread/linuxthreads/sysdeps/nios2/pt-machine.h new file mode 100644 index 000000000..484a77e14 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/nios2/pt-machine.h @@ -0,0 +1,58 @@ +/* Machine-dependent pthreads configuration and inline functions. + nios2 version. + Copyright (C) 1996, 1998, 2000, 2002 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. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline +#endif + +extern long int testandset (int *spinlock); + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + unsigned int scratch; + long int ret=-2; + + __asm__ __volatile__( + "rdctl %0, status\n\t" + "and %0, %0, %1\n\t" + "wrctl status, %0 #disable interrupts\n\t" + "ldw %1, 0(%4)\n\t" + "stw %3, 0(%4)\n\t" + "ori %0, %0, 1\n\t" + "wrctl status, %0 #enable interrupts\n\t" + : "=&r"(scratch), "=r"(ret) + : "1"(ret), "r"(1), "r"(spinlock) + : "memory"); + + 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 */ |