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1685 decky 1
#! /bin/sh
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#
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# Copyright (C) 2006 Martin Decky
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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[ "$#" -lt 1 ] && exit 1
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case "$1" in
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	"binary")
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		BFD="binary"
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		;;
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	"ecoff")
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		BFD="ecoff-littlemips"
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		;;
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	*)
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		echo "Undefined image format" >&1
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		exit 1
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		;;
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esac
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OBJCOPY="$2"
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LINK="_link.ld"
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HEADER="_components.h"
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shift 2
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echo "OUTPUT_FORMAT(\"${BFD}\")
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ENTRY(start)
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SECTIONS {
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	.boot 0xbfc00000: AT (0) {
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		*(BOOTSTRAP);
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		*(.text);
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		*(.rodata);
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		*(.rodata.*);
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		*(.data);		/* initialized data */
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		*(.sdata);
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		*(.sdata2);
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		*(.sbss);
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		*(.scommon);
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		*(.bss);		/* uninitialized static variables */
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		*(COMMON); 		/* global variables */
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		*(.reginfo);" > "$LINK"
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echo '#ifndef ___COMPONENTS_H__
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#define ___COMPONENTS_H__
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typedef struct {
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	char *name;
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	void *start;
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	void *end;
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	unsigned int size;
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} component_t;' > "$HEADER"
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COUNT="0"
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DATA=""
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for TASK in "$@" ; do
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	BASENAME="`basename "$TASK" | sed 's/^\(.*\)\.[^.]*$/\1/'`"
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	OBJECT="${BASENAME}.o"
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	SYMBOL="`echo "_binary_$TASK" | tr "./" "__"`"
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	MACRO="`echo "$BASENAME" | tr [:lower:] [:upper:]`"
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	echo "$TASK -> $OBJECT"
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	echo "
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		. = ALIGN(4096);
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		*(.${BASENAME}_image);" >> "$LINK"
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	echo "
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extern int ${SYMBOL}_start;
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extern int ${SYMBOL}_end;
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#define ${MACRO}_START ((void *) &${SYMBOL}_start)
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#define ${MACRO}_END ((void *) &${SYMBOL}_end)
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#define ${MACRO}_SIZE ((unsigned int) ${MACRO}_END - (unsigned int) ${MACRO}_START)" >> "$HEADER"
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	"$OBJCOPY" -I binary -O elf32-tradlittlemips -B mips --rename-section ".data=.${BASENAME}_image" "$TASK" "$OBJECT"
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	DATA="${DATA}
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	components[$COUNT].name = \"${BASENAME}\";
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	components[$COUNT].start = ${MACRO}_START;
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	components[$COUNT].end = ${MACRO}_END;
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	components[$COUNT].size = ${MACRO}_SIZE;";
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	COUNT="`expr "$COUNT" + 1`"
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done
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echo '	}
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}' >> "$LINK"
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echo "
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#define COMPONENTS $COUNT
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static void init_components(component_t components[])
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{
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$DATA
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}
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#endif
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" >> "$HEADER"