exec_on_qemu.sh

#!/bin/bash


# Environment SetUp
SRC=${@}
AS=/usr/bin/armv7a-hardfloat-linux-gnueabi-as
LD=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
OBJCOPY=/usr/bin/armv7a-hardfloat-linux-gnueabi-objcopy

# CONNEX
export START_ADDRESS=0x00000000
export BLOCK_SIZE_BYTE=4096
export BLOCK_COUNT=4096

# Load Variables which are able to override
. config.sh

# Variables for use internally
TARGET=$1
OBJS=()
OBJFILESIZE=0
FLASHIMG=flash.bin

echo compiling $SRC...

split_suffix() {
    IFS_ORIGIN=$IFS
    IFS=.
    arr=($1)
    IFS=${IFS_ORIGIN}
    echo ${arr[0]}
}


# compile assemble files
while [ "x$2" != "x" ]; do
    out="$(split_suffix $2).o"
    ${AS} -o ${out} $2
    OBJS[${OBJFILESIZE}]=${out}
    OBJFILESIZE=$((OBJFILESIZE++))
    shift
done

# link files
elf="$(split_suffix $1).elf"
echo "${LD} -Ttext=${START_ADDRESS} -o ${elf} ${OBJS[@]}"
${LD} -Ttext=${START_ADDRESS} -o ${elf} ${OBJS[@]}

# Convert to Binary format
bin="$(split_suffix $1).bin"
${OBJCOPY} -O binary ${elf} ${bin}

# Prepare flash images
dd if=/dev/zero of=${FLASHIMG} bs=${BLOCK_SIZE_BYTE} count=${BLOCK_COUNT}
dd if=${bin} of=${FLASHIMG} bs=${BLOCK_COUNT} conv=notrunc

# execute on qemu
qemu-system-arm -M connex -pflash ${FLASHIMG} -nographic -serial /dev/null