#!/bin/sh

QMKSPEC=$1

VERBOSE=$2

SRCDIR=$3

OUTDIR=$4

# debuggery

[ "$VERBOSE" = "yes" ] && echo "Determining floating point  word-order... ($*)"

# build and run a test program

test -d "$OUTDIR/config.tests/unix/doubleformat" || mkdir -p "$OUTDIR/config.tests/unix/doubleformat"

"$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "$SRCDIR/config.tests/unix/doubleformat/doubleformattest.pro" -o "$OUTDIR/config.tests/unix/doubleformat/Makefile" >/dev/null 2>&1

cd "$OUTDIR/config.tests/unix/doubleformat"

DOUBLEFORMAT="UNKNOWN"

[ "$VERBOSE" = "yes" ] && $MAKE || $MAKE >/dev/null 2>&1

if [ -f ./doubleformattest ]; then

    : # nop

else

    [ "$VERBOSE" = "yes" ] && echo "Unknown floating point format!"

    exit 2

fi

# LE: strings | grep 0123ABCD0123ABCD

# BE: strings | grep DCBA3210DCBA3210

# 

# LE arm-swapped-dword-order: strings | grep ABCD0123ABCD0123

# BE arm-swapped-dword-order: strings | grep 3210DCBA3210DCBA (untested)

if strings ./doubleformattest | grep "0123ABCD0123ABCD" >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "     Normal little endian format"

    DOUBLEFORMAT="LITTLE"

elif strings ./doubleformattest | grep "ABCD0123ABCD0123" >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "     Swapped little endian format"

    DOUBLEFORMAT="LITTLESWAPPED"

elif strings ./doubleformattest | grep "DCBA3210DCBA3210" >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "     Normal big endian format"

    DOUBLEFORMAT="BIG"

elif strings ./doubleformattest | grep "3210DCBA3210DCBA" >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "     Swapped big endian format"

    DOUBLEFORMAT="BIGSWAPPED"

fi

# done

if [ "$DOUBLEFORMAT" = "LITTLE" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using little endian."

    exit 10

elif [ "$DOUBLEFORMAT" = "BIG" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using big endian."

    exit 11

elif [ "$DOUBLEFORMAT" = "LITTLESWAPPED" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using swapped little endian."

    exit 12

elif [ "$DOUBLEFORMAT" = "BIGSWAPPED" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using swapped big endian."

    exit 13

else

    [ "$VERBOSE" = "yes" ] && echo "Unknown floating point format!"

    exit 99

fi