original files of m241

vxworks-6.9/target/h/arch/ppc/ppc32.h

@@ -0,0 +1,63 @@
+/* ppc32.h - generic 32-bit PowerPC header */
+
+/* Copyright 2002-2003 Wind River Systems, Inc. */
+
+/*
+modification history
+--------------------
+01c,05dec03,jtp  Add _WRS_TLB_MISS_CLASS_HW
+01b,04feb03,pch  add _fp60x variant
+01a,12dec02,pch  written.
+*/
+
+#ifndef	__INCppc32h
+#define	__INCppc32h
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * If compiling for a variant, the preprocessor symbol CPU_VARIANT will be
+ * defined as the directory suffix, e.g. _fp60x for PPC60x hardware floating
+ * point support (whose objects go in target/lib/ppc/PPC32/ *_fp60x).
+ *
+ * We really want something like #if ("CPU_VARIANT" == "_fp60x")
+ * which ANSI C does not allow.  However, it does allow the expansion
+ * of CPU_VARIANT to be re-expanded according to another #define.
+ */
+#ifdef	CPU_VARIANT
+#define	_fp60x	603
+#if (CPU_VARIANT == _fp60x)
+#define	PPC32_fp60x	1
+#endif	/* CPU_VARIANT == _fp60x */
+#undef	_fp60x
+#endif	/* CPU_VARIANT */
+
+/*
+ * Tell the loader this processor can't handle any misalignment.
+ * This is necessary for 403; for others the loader will
+ * take a performance hit but it is otherwise harmless.
+ */
+#define	_WRS_STRICT_ALIGNMENT	1
+
+/*
+ * FP variant needs to define _PPC_MSR_FP (used elsewhere to indicate
+ * "FP present".  Base variant should have no floating point support
+ * in target shell.
+ */
+#ifdef	PPC32_fp60x
+#define _PPC_MSR_FP		0x2000	/* floating-point available */
+#else	/* PPC32_fp60x */
+#define	_WRS_NO_TGT_SHELL_FP	1
+#endif	/* PPC32_fp60x */
+
+/* No MMU support in architecture library */
+#undef _WRS_TLB_MISS_CLASS_SW
+#undef _WRS_TLB_MISS_CLASS_HW
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* __INCppc32h */