From 6ce4e876a73f5dc47251b3367e022f64708b0d91 Mon Sep 17 00:00:00 2001 From: Jake Burkholder Date: Tue, 1 Jan 2002 21:58:32 +0000 Subject: Add libc side of user trap handling. Add support for handling floating point disabled traps mostly in userland for the simple single threaded case. Not yet enabled by default. Implement __sparc_utrap_install as specified by the sparc abi. --- lib/libc/sparc64/sys/__sparc_utrap_private.h | 53 ++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 lib/libc/sparc64/sys/__sparc_utrap_private.h (limited to 'lib/libc/sparc64/sys/__sparc_utrap_private.h') diff --git a/lib/libc/sparc64/sys/__sparc_utrap_private.h b/lib/libc/sparc64/sys/__sparc_utrap_private.h new file mode 100644 index 000000000000..59461348a6d4 --- /dev/null +++ b/lib/libc/sparc64/sys/__sparc_utrap_private.h @@ -0,0 +1,53 @@ +/*- + * Copyright (c) 2001 Jake Burkholder. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef ___SPARC_UTRAP_PRIVATE_H_ +#define ___SPARC_UTRAP_PRIVATE_H_ + +#define UF_DONE(uf) do { \ + uf->uf_pc = uf->uf_npc; \ + uf->uf_npc = uf->uf_pc + 4; \ +} while (0) + +struct utrapframe { + u_long uf_global[8]; + u_long uf_out[8]; + u_long uf_pc; + u_long uf_npc; + u_long uf_sfar; + u_long uf_sfsr; + u_long uf_tar; + u_long uf_type; +}; + +extern char __sparc_utrap_fp_disabled[]; +extern char __sparc_utrap_gen[]; + +void __sparc_utrap(struct utrapframe *); + +#endif -- cgit v1.2.3