diff options
| author | simonb <simonb@NetBSD.org> | 2002-11-15 01:09:20 +0000 |
|---|---|---|
| committer | simonb <simonb@NetBSD.org> | 2002-11-15 01:09:20 +0000 |
| commit | 383afcb5b64aae1cc4962fac4deb224dfe8a8565 (patch) | |
| tree | 71c6d92443ed255e9bd2d0da5bb240db744a044b /sys | |
| parent | a3458d769a942011bdb5a06c3af587d7a24324a4 (diff) | |
Declare some CP0 hazards for the SB1 core.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/mips/include/sb1regs.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sys/arch/mips/include/sb1regs.h b/sys/arch/mips/include/sb1regs.h new file mode 100644 index 00000000000..ce22d195b17 --- /dev/null +++ b/sys/arch/mips/include/sb1regs.h @@ -0,0 +1,60 @@ +/* $NetBSD: sb1regs.h,v 1.1 2002/11/15 01:09:20 simonb Exp $ */ + +/* + * Copyright 2002 Wasabi Systems, Inc. + * All rights reserved. + * + * Written by Simon Burge for Wasabi Systems, Inc. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed for the NetBSD Project by + * Wasabi Systems, Inc. + * 4. The name of Wasabi Systems, Inc. may not be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC + * 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. + */ + +#undef COP0_SYNC /* XXX should be COP0_HAZARD or even COP0_HAZARD_MISC */ +#undef COP0_HAZARD_FPUENABLE + +#ifdef SB1250_PASS1 +#define COP0_SYNC \ + .set push; .set mips32; ssnop; ssnop; ssnop; ssnop; .set pop; +#else +#define COP0_SYNC .set push; .set mips32; ssnop; ssnop; ssnop; .set pop; +#endif + +/* + * XXX: + * This hazard is really: + * + * .set push; .set mips32; ssnop; bnel $0, $0, .+4; ssnop; .set pop; + * + * We use ".word 0x54000000" for "bnel $0, $0, .+4" here because + * this hazard is used within C code and we can't convert anything + * with a comma to a string using normal ANSI C preprocessor string + * operations. + */ +#define COP0_HAZARD_FPUENABLE \ + .set push; .set mips32; ssnop; .word 0x54000000; ssnop; .set pop; |
