source: mainline/boot/arch/mips32/loader/pack@ 8ccd2ea

#! /bin/sh

#
# Copyright (C) 2006 Martin Decky
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - 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.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
#

[ "$#" -lt 1 ] && exit 1

case "$1" in
        "binary")
                BFD="binary"
                ;;
        "ecoff")
                BFD="ecoff-littlemips"
                ;;
        *)
                echo "Undefined image format" >&1
                exit 1
                ;;
esac

OBJCOPY="$2"
LINK="_link.ld"
HEADER="_components.h"

shift 2

echo "OUTPUT_FORMAT(\"${BFD}\")
ENTRY(start)

SECTIONS {
        .boot 0xbfc00000: AT (0) {
                *(BOOTSTRAP);
                *(.text);
                
                *(.rodata);
                *(.rodata.*);
                *(.data);               /* initialized data */
                *(.sdata);
                *(.sdata2);
                *(.sbss);
                *(.scommon);
                *(.bss);                /* uninitialized static variables */    
                *(COMMON);              /* global variables */
                *(.reginfo);" > "$LINK"

echo '#ifndef ___COMPONENTS_H__
#define ___COMPONENTS_H__

typedef struct {
        char *name;
        
        void *start;
        void *end;
        unsigned int size;
} component_t;' > "$HEADER"

COUNT="0"
DATA=""

for TASK in "$@" ; do
        BASENAME="`basename "$TASK" | sed 's/^\(.*\)\.[^.]*$/\1/'`"
        OBJECT="${BASENAME}.o"
        SYMBOL="`echo "_binary_$TASK" | tr "./" "__"`"
        MACRO="`echo "$BASENAME" | tr [:lower:] [:upper:]`"
        echo "$TASK -> $OBJECT"
        
        echo "
                . = ALIGN(4096);
                *(.${BASENAME}_image);" >> "$LINK"
        
        echo "
extern int ${SYMBOL}_start;
extern int ${SYMBOL}_end;

#define ${MACRO}_START ((void *) &${SYMBOL}_start)
#define ${MACRO}_END ((void *) &${SYMBOL}_end)
#define ${MACRO}_SIZE ((unsigned int) ${MACRO}_END - (unsigned int) ${MACRO}_START)" >> "$HEADER"
        
        "$OBJCOPY" -I binary -O elf32-tradlittlemips -B mips --rename-section ".data=.${BASENAME}_image" "$TASK" "$OBJECT"
                
        DATA="${DATA}
        components[$COUNT].name = \"${BASENAME}\";
        components[$COUNT].start = ${MACRO}_START;
        components[$COUNT].end = ${MACRO}_END;
        components[$COUNT].size = ${MACRO}_SIZE;";
        COUNT="`expr "$COUNT" + 1`"
done

echo '  }
}' >> "$LINK"

echo "
#define COMPONENTS $COUNT

static void init_components(component_t components[])
{
$DATA
}

#endif
" >> "$HEADER"