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Coppy original mapping to the higher half

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Eugen Wissner
2025-07-30 23:11:12 +02:00
parent eac9236e44
commit d12bfbcd43
3 changed files with 266 additions and 242 deletions
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Rakefile
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@@ -144,11 +144,13 @@ namespace :cross do
cwd = source_directory.dirname + 'build-binutils'
cwd.mkpath
options.rootfs.mkpath
options.sysroot.mkpath
env = ENV.slice 'CC', 'CXX'
configure_options = [
"--prefix=#{options.rootfs.realpath}",
"--target=#{options.target}",
"--with-sysroot=#{options.sysroot.realpath}",
'--disable-nls',
'--enable-gprofng=no',
'--disable-werror',
@@ -167,7 +169,6 @@ namespace :cross do
cwd = source_directory.dirname + 'build-gcc'
cwd.mkpath
options.rootfs.mkpath
options.sysroot.mkpath
sh 'contrib/download_prerequisites', chdir: source_directory.to_path
configure_options = options.configuration('-with-') + [
@@ -354,10 +355,10 @@ rule '.elna.o' => ->(match) {
} do |t|
options = BuildTarget.new relative_from_tmp(t.name).first
compiler = options.rootfs + "bin/#{options.target}-gcc"
flags = ['-O2', '-g3', '-fno-stack-protector'] + options.configuration('m')
sources = t.prerequisites.select { |prerequisite| File.extname(prerequisite) == '.elna' }
system compiler.to_s, *flags, '-c', '-o', t.name, *sources, exception: true
system compiler.to_s, '-O2', '-g3', '-fno-stack-protector', *options.configuration('m'),
'-c', '-o', t.name, *sources, exception: true
end
rule 'kernel.elf' => ->(match) {
@@ -373,17 +374,17 @@ rule 'kernel.elf' => ->(match) {
objects << "arch/#{instruction_set}/kernel.ld"
} do |t|
options = BuildTarget.new relative_from_tmp(t.name).first
compiler = options.rootfs + "bin/#{options.target}-gcc"
flags = options.configuration('m')
linker = options.rootfs + options.target + 'bin/ld'
objects, linker_script = t.prerequisites.partition { |prerequisite| File.extname(prerequisite) == '.o' }
system compiler.to_s, '-nostdlib', '-T', *linker_script, '-o', t.name, *objects, exception: true
system linker.to_s, '-nostdlib', '-T', *linker_script, '-o', t.name, *objects, exception: true
end
task default: 'build/riscv32/kernel.elf'
task :default do |t|
QEMU = 'qemu-system-riscv32'
system QEMU, '-machine', 'virt', '-bios', 'default', '-nographic', '-serial', 'mon:stdio', '--no-reboot',
'-kernel', t.prerequisites.last, exception: true
system QEMU, '-machine', 'virt', '-nographic', '-serial', 'mon:stdio', '--no-reboot',
'-bios', '../opensbi-1.7-rv-bin/share/opensbi/ilp32/generic/firmware/fw_jump.bin',
'-device', "loader,file=#{t.prerequisites.last}", exception: true
end