From 3fc6ba17b7a9919dd01a1c47853a4944fc990079 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Fri, 1 Mar 2002 21:09:56 +0000 Subject: Patch from M. R. Brown to fix pthread support for SH, and fix vfork --- libpthread/linuxthreads/sysdeps/sh/pt-machine.h | 56 ++++++++++++++++++++++ .../linuxthreads/sysdeps/sh/sigcontextinfo.h | 27 +++++++++++ 2 files changed, 83 insertions(+) create mode 100644 libpthread/linuxthreads/sysdeps/sh/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h (limited to 'libpthread/linuxthreads/sysdeps/sh') diff --git a/libpthread/linuxthreads/sysdeps/sh/pt-machine.h b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h new file mode 100644 index 000000000..7287dc936 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h @@ -0,0 +1,56 @@ +/* Machine-dependent pthreads configuration and inline functions. + SuperH version. + Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Niibe Yutaka . + + 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_EI +# define PT_EI extern inline +#endif + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__( + "tas.b @%1\n\t" + "movt %0" + : "=r" (ret) + : "r" (spinlock) + : "memory", "cc"); + + return (ret == 0); +} + + +/* 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__ ("r15"); + +/* Return the thread descriptor for the current thread. */ +struct _pthread_descr_struct; +#define THREAD_SELF \ + ({ struct _pthread_descr_struct *self; \ + __asm__("stc gbr,%0" : "=r" (self)); self;}) + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) \ + ({ __asm__("ldc %0,gbr" : : "r" (descr));}) diff --git a/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h new file mode 100644 index 000000000..3e1f3e949 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h @@ -0,0 +1,27 @@ +/* Copyright (C) 1999, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Philip Blundell , 1999. + + 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. */ + +#define SIGCONTEXT int _a2, int _a3, int _a4, struct sigcontext + +#define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4, +#define GET_PC(ctx) ((void *) ctx.sc_pc) +#define GET_FRAME(ctx) ((void *) ctx.sc_regs[14]) +#define GET_STACK(ctx) ((void *) ctx.sc_regs[15]) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) -- cgit v1.2.3