#!/bin/bash

# This script builds and runs the DEC64 tests for Linux running on a 64-bit
# ARM processor.

# DEC64's ARM source must be tweaked slightly to make it compatible with gcc:

#   0. Comments start with a double slash, not a semicolon.
#   1. The global directive, like all directives, is preceeded by a period.
#   2. The area directive is not supported. We do, however, align.
#   3. Labels must be suffixed with a colon.
#   4. An 8 byte constant is declared with .quad rather than dcq.
#   5. When shifting an address offset, an extra comma is required.
#   6. The end directive is unnecessary.

sed \
    -E \
    -e "s_;_//_g" \
    -e "s/global ([a-z0-9_]+) \\[func\\]/.global \1/g" \
    -e "s/area dec64, align=8, code, readonly/.align 8/g" \
    -e "s/^([a-z0-9_]+)/\1:/g" \
    -e "s/dcq/.quad/g" \
    -e "s/x([0-9]) lsl 3/x\1, lsl 3/g" \
    -e "/    end/d" \
    <dec64.s \
    >dec64.linux.s \
|| exit

build_and_run() {

# Compile, assemble and link a source file into a binary executable, then
# run it.

    src=$1
    bin=$2
    gcc \
        -o $bin \
        dec64.linux.s \
        dec64_string.c \
        dec64_math.c \
        $src \
    && ./$bin
}

build_and_run dec64_test.c dec64_test \
&& build_and_run dec64_string_test.c dec64_string_test \
&& build_and_run dec64_math_test.c dec64_math_test \
|| exit

# This script has been tested on Debian 12 (Bookworm) with gcc v12.2.0.