original files of m241

2026-07-30 11:19:44 +05:30
parent 170c2b3f3a
commit afc7070c1f
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+/* tx49xxHazards.h - assembler hazards definitions header file */
+
+/* Copyright 1999-2005 Wind River Systems, Inc. */
+
+/*
+modification history
+--------------------
+01a,13sep05,rlg  Modified to handle tx49xx hazards
+*/
+
+/* These hazard macros are intended for use with MIPS architecture-
+ * dependent assembly files which require handling hazards.
+ * These macros support the tx4938 core
+ * This file is included by the asmMips.h file when the HAZARD_FILE macro
+ * is defined using
+ * #define HAZARD_FILE <arch/mips/tx49xxHazards.h>
+ */
+
+#ifndef __INCtx49xxHazardsh
+#define __INCtx49xxHazardsh
+
+#define SINGLE_ISSUE 0
+#define DUAL_ISSUE   1
+#define CPU_CYCLES              DUAL_ISSUE
+
+/* Using the issue mechanism definitions above, the MIPS CPU cycles
+ * are defined below.
+ */
+
+#define ssnop           .word 0x00000040
+
+/* Hazard macros */
+#define HAZARD_TLB       ssnop; ssnop; ssnop; ssnop; sync
+#define HAZARD_ERET      ssnop; ssnop; ssnop; ssnop
+#define HAZARD_CP_READ   ssnop; ssnop
+#define HAZARD_CP_WRITE  ssnop; ssnop; ssnop; ssnop
+#define HAZARD_CACHE_TAG ssnop; ssnop
+#define HAZARD_CACHE     ssnop; ssnop; ssnop; ssnop
+#define HAZARD_INTERRUPT ssnop; ssnop; ssnop; ssnop
+
+#endif /* __INCtx49xxHazardsh */
+