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# frozen_string_literal: true
require 'open3'
require 'rake/clean'
require 'term/ansicolor'
CLOBBER.include 'build'
CROSS_GCC = '../riscv32-ilp32d--glibc/bin/riscv32-linux-gcc'
SYSROOT = '../riscv32-ilp32d--glibc/riscv32-buildroot-linux-gnu/sysroot'
QEMU = 'qemu-riscv32'
def assemble_stage(output, compiler, source)
arguments = [QEMU, '-L', SYSROOT, *compiler]
puts Term::ANSIColor.green(arguments * ' ')
puts
Open3.popen2(*arguments) do |qemu_in, qemu_out|
qemu_in.write File.read(*source)
qemu_in.close
IO.copy_stream qemu_out, output
qemu_out.close
end
end
desc 'Final stage'
task default: ['build/stage2b', 'build/stage2b.s', 'boot/stage2.elna'] do |t|
exe, previous_output, source = t.prerequisites
cat_arguments = ['cat', source]
compiler_arguments = [QEMU, '-L', SYSROOT, exe]
diff_arguments = ['diff', '-Nur', '--text', previous_output, '-']
Open3.pipeline(cat_arguments, compiler_arguments, diff_arguments)
end
directory 'build'
desc 'Initial stage'
file 'build/stage1' => ['boot/stage1.s', 'boot/common-boot.s', 'boot/tokenizer.s', 'build'] do |t|
source = t.prerequisites.filter { |prerequisite| prerequisite.end_with? '.s' }
sh CROSS_GCC, '-nostdlib', '-o', t.name, *source
end
file 'build/stage2a.s' => ['build/stage1', 'boot/stage2.elna'] do |t|
source, exe = t.prerequisites.partition { |prerequisite| prerequisite.end_with? '.elna' }
File.open t.name, 'w' do |output|
assemble_stage output, exe, source
end
end
file 'build/stage2a' => ['build/stage2a.s', 'boot/common-boot.s'] do |t|
sh CROSS_GCC, '-nostdlib', '-o', t.name, *t.prerequisites
end
file 'build/stage2b.s' => ['build/stage2a', 'boot/stage2.elna'] do |t|
source, exe = t.prerequisites.partition { |prerequisite| prerequisite.end_with? '.elna' }
File.open t.name, 'w' do |output|
assemble_stage output, exe, source
end
end
file 'build/stage2b' => ['build/stage2b.s', 'boot/common-boot.s'] do |t|
sh CROSS_GCC, '-nostdlib', '-o', t.name, *t.prerequisites
end
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