From e64ac02c24b43659048622714afdc92fedf561fa Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Sun, 1 Jul 2012 13:06:41 +0000 Subject: Move all files into ports/ subdirectory in preparation for merge with glibc --- ports/sysdeps/am33/linuxthreads/pt-machine.h | 67 ++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 ports/sysdeps/am33/linuxthreads/pt-machine.h (limited to 'ports/sysdeps/am33/linuxthreads/pt-machine.h') diff --git a/ports/sysdeps/am33/linuxthreads/pt-machine.h b/ports/sysdeps/am33/linuxthreads/pt-machine.h new file mode 100644 index 0000000000..86d0f8b1e1 --- /dev/null +++ b/ports/sysdeps/am33/linuxthreads/pt-machine.h @@ -0,0 +1,67 @@ +/* Machine-dependent pthreads configuration and inline functions. + am33 version. + Copyright (C) 1996,1997,1998,1999,2000,2001, 2004 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Alexandre Oliva + Based on ../i386/pt-machine.h. + + 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. If not, see + . */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef __ASSEMBLER__ +#ifndef PT_EI +# define PT_EI extern inline +#endif + +/* 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 __builtin_frame_address (0) + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + long int ret = 1; + + /* This won't test&set the entire int, only the least significant + byte. I hope this doesn't matter, since we can't do better. */ + __asm__ __volatile__ ("bset %0, %1; bne 1f; clr %0; 1:" : + "+d" (ret), "+m" (*(volatile int *)spinlock)); + + return ret; +} + + +PT_EI int +get_eflags (void) +{ + int res; + __asm__ __volatile__ ("mov psw,%0" : "=d" (res)); + return res; +} + + +PT_EI void +set_eflags (int newflags) +{ + __asm__ __volatile__ ("mov %0,psw" : : "d" (newflags) : "cc"); +} + +#endif /* __ASSEMBLER__ */ + +#endif /* pt-machine.h */ -- cgit v1.2.3