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authorsimonb <simonb@NetBSD.org>2002-11-15 01:09:20 +0000
committersimonb <simonb@NetBSD.org>2002-11-15 01:09:20 +0000
commit383afcb5b64aae1cc4962fac4deb224dfe8a8565 (patch)
tree71c6d92443ed255e9bd2d0da5bb240db744a044b /sys
parenta3458d769a942011bdb5a06c3af587d7a24324a4 (diff)
Declare some CP0 hazards for the SB1 core.
Diffstat (limited to 'sys')
-rw-r--r--sys/arch/mips/include/sb1regs.h60
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;