From 124ec188720b6bdea85ade49e7ea195161b12fce Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 5 Jan 2008 10:05:27 +0000 Subject: Chris Zankel writes: The following patches add support for the Xtensa processor architecture to uClibc. They are based on a recent SVN checkout (12/05/2007). The first patch (attached to this post) adds Xtensa support to various shared configuration and make files. The following patches then include the Xtensa specific files and directories. I welcome any feedback and would appreciate it if you could include the patches into the mainline tree. I am certainly committed to maintain the port. Bob Wilson was kind enough to review the patches. Some notes about the architecture: Xtensa is a configurable and extensible processor architecture developed by Tensilica. For more information, please visit: www.linux-xtensa.org. --- libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h | 33 +++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h (limited to 'libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h') diff --git a/libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h b/libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h new file mode 100644 index 000000000..8f3301c9a --- /dev/null +++ b/libc/sysdeps/linux/xtensa/bits/sigcontextinfo.h @@ -0,0 +1,33 @@ +/* Copyright (C) 2003, 2007 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; if not, write to the Free + Software Foundation, Inc., 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ + +/* Also see register-dump.h, where we spill live registers to the + stack so that we can trace the stack backward. */ + +#define SIGCONTEXT unsigned long _info, ucontext_t * +#define SIGCONTEXT_EXTRA_ARGS _info, + +/* ANDing with 0x3fffffff clears the window-size bits. + Assumes TASK_SIZE = 0x40000000. */ + +#define GET_PC(ctx) ((void *) (ctx->uc_mcontext.sc_pc & 0x3fffffff)) +#define GET_FRAME(ctx) ((void *) ctx->uc_mcontext.sc_a[1]) +#define GET_STACK(ctx) ((void *) ctx->uc_mcontext.sc_a[1]) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) + -- cgit v1.2.3