xtensa: Install core-isa.h header

This header, which depends upon the processor configuration, includes
information used by the C library. It should be replaced along with
xtensa-config.h when configuring gcc for a particular processor.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

gcc/config/xtensa/t-xtensa

@@ -23,3 +23,22 @@ $(out_object_file): gt-xtensa.h
 xtensa-dynconfig.o: $(srcdir)/config/xtensa/xtensa-dynconfig.cc
 	$(COMPILE) $<
 	$(POSTCOMPILE)
+
+XTENSA_CONFIG_H = $(srcdir)/ginclude/core-isa.h
+
+stmp-xtensa-int-hdrs: $(XTENSA_CONFIG_H)
+	-if [ -d include ] ; then true; else mkdir include; chmod a+rx include; fi
+	-if [ -d include/xtensa ] ; then true; else mkdir include/xtensa; chmod a+rx include/xtensa; fi
+	-if [ -d include/xtensa/config ] ; then true; else mkdir include/xtensa/config; chmod a+rx include/xtensa/config; fi
+	for file in .. $(XTENSA_CONFIG_H); do \
+	  if [ X$$file != X.. ]; then \
+	    realfile=`echo $$file | sed -e 's|.*/\([^/]*\)$$|\1|'`; \
+	    $(STAMP) include/xtensa/config/$$realfile; \
+	    rm -f include/xtensa/config/$$realfile; \
+	    cp $$file include/xtensa/config; \
+	    chmod a+r include/xtensa/config/$$realfile; \
+	  fi; \
+	done
+	$(STAMP) $@
+
+stmp-int-hdrs: stmp-xtensa-int-hdrs

gcc/ginclude/core-isa.h

@@ -0,0 +1,115 @@
+/*
+ * xtensa/config/core-isa.h -- minimum required HAL definitions that are
+ *				dependent on Xtensa processor CORE configuration
+ *
+ *  See <xtensa/config/core.h>, which includes this file, for more details.
+ */
+
+/* Xtensa processor core configuration information.
+
+   Copyright (c) 1999-2023 Tensilica Inc.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice shall be included
+   in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+   CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+   SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#ifndef _XTENSA_CORE_CONFIGURATION_H
+#define _XTENSA_CORE_CONFIGURATION_H
+
+#if defined(_LIBC) || defined(_LIBM) || defined(_LIBGLOSS)
+
+/* Macros used to build newlib and libgloss */
+
+#undef XCHAL_HAVE_BE
+#ifdef __XCHAL_HAVE_BE
+#define XCHAL_HAVE_BE		__XCHAL_HAVE_BE
+#else
+#define XCHAL_HAVE_BE		0	/* big-endian byte ordering */
+#endif
+
+#undef XCHAL_HAVE_WINDOWED
+#ifdef __XCHAL_HAVE_WINDOWED
+#define XCHAL_HAVE_WINDOWED		__XCHAL_HAVE_WINDOWED
+#else
+#define XCHAL_HAVE_WINDOWED		1	/* windowed registers option */
+#endif
+
+#undef XCHAL_NUM_AREGS
+#ifdef __XCHAL_NUM_AREGS
+#define XCHAL_NUM_AREGS		__XCHAL_NUM_AREGS
+#else
+#define XCHAL_NUM_AREGS		64	/* num of physical addr regs */
+#endif
+
+#undef XCHAL_HAVE_DENSITY
+#ifdef __XCHAL_HAVE_DENSITY
+#define XCHAL_HAVE_DENSITY		__XCHAL_HAVE_DENSITY
+#else
+#define XCHAL_HAVE_DENSITY		1	/* 16-bit instructions */
+#endif
+
+#undef XCHAL_HAVE_LOOPS
+#ifdef __XCHAL_HAVE_LOOPS
+#define XCHAL_HAVE_LOOPS		__XCHAL_HAVE_LOOPS
+#else
+#define XCHAL_HAVE_LOOPS		1	/* zero-overhead loops */
+#endif
+
+#undef XCHAL_HAVE_L32R
+#ifdef __XCHAL_HAVE_L32R
+#define XCHAL_HAVE_L32R		__XCHAL_HAVE_L32R
+#else
+#define XCHAL_HAVE_L32R		1	/* L32R instruction */
+#endif
+
+#undef XCHAL_HAVE_FP
+#ifdef __XCHAL_HAVE_FP
+#define XCHAL_HAVE_FP		__XCHAL_HAVE_FP
+#else
+#define XCHAL_HAVE_FP		1	/* single prec floating point */
+#endif
+
+#undef XCHAL_HAVE_FP_SQRT
+#ifdef __XCHAL_HAVE_FP_SQRT
+#define XCHAL_HAVE_FP_SQRT		__XCHAL_HAVE_FP_SQRT
+#else
+#define XCHAL_HAVE_FP_SQRT		1	/* FP with SQRT instructions */
+#endif
+
+#undef XCHAL_HAVE_DFP
+#ifdef __XCHAL_HAVE_DFP
+#define XCHAL_HAVE_DFP		__XCHAL_HAVE_DFP
+#else
+#define XCHAL_HAVE_DFP		0	/* double precision FP pkg */
+#endif
+
+#undef XCHAL_INST_FETCH_WIDTH
+#ifdef __XCHAL_INST_FETCH_WIDTH
+#define XCHAL_INST_FETCH_WIDTH		__XCHAL_INST_FETCH_WIDTH
+#else
+#define XCHAL_INST_FETCH_WIDTH		4	/* instr-fetch width in bytes */
+#endif
+
+#else /* defined(_LIBC) || defined(_LIBM) || defined(_LIBGLOSS) */
+
+/* Expect that core-isa.h exists in OS/baremetal port */
+#include_next <xtensa/config/core-isa.h>
+
+#endif /* defined(_LIBC) || defined(_LIBM) || defined(_LIBGLOSS) */
+
+#endif /* _XTENSA_CORE_CONFIGURATION_H */