genode/tool/run/boot_dir/fiasco
Norman Feske f54c85e045 Genode application binary interface (ABI)
This patch decouples the kernel-specific implementation of the dynamic
linker from its kernel-agnostic binary interface. The name of the
kernel-specific dynamic linker binary now corresponds to the kernel,
e.g., 'ld-linux.lib.so' or 'ld-nova.lib.so'. Applications are no longer
linked directly against a concrete instance of the dynamic linker but
against a shallow stub called 'ld.lib.so'. This stub contains nothing
but the symbols provided by the dynamic linker. It thereby represents
the Genode ABI.

At system-integration time, the kernel-specific run/boot_dir back ends
integrate the matching the kernel-specific variant of the dynamic linker
as 'ld.lib.so' into the boot image.

The ABI symbol file for the dynamic linker is located at
'base/lib/symbols/ld'. It contains the joint ABI of all supported
architectures. The new utility 'tool/abi_symbols' eases the creation of
such an ABI symbol file for a given shared library. Its result should be
manually inspected and edited as needed.

The patch removes the 'syscall' library from 'base_libs.mk' to avoid
polluting the kernel-agnostic ABI with kernel-specific interfaces.

Issue 
Issue 
2016-12-23 16:50:28 +01:00

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proc binary_name_ld_lib_so { } { return "ld-fiasco.lib.so" }
##
# Read the location of the Fiasco user directory from 'etc/fiasco.conf'
#
proc l4_dir { } {
global _l4_dir
if {![info exists _l4_dir]} {
if {[file exists etc/fiasco.conf]} {
set _l4_dir [exec sed -n "/^L4_BUILD_DIR/s/^.*=\\s*//p" etc/fiasco.conf]
if {[file exists $_l4_dir]} { return $_l4_dir }
}
set _l4_dir "[pwd]/l4"
if {![file exists $_l4_dir]} {
puts -nonewline stderr "Error: Could neither find the L4 build directory "
puts -nonewline stderr "within '<genode-build-dir>/l4' nor at a location "
puts -nonewline stderr "specified via 'L4_BUILD_DIR = <l4v2-build-dir>' "
puts stderr "in <genode-build-dir>/etc/fiasco.conf'."
exit 1
}
}
return $_l4_dir
}
##
# Return the location of the Fiasco kernel
#
proc fiasco { } {
return [kernel_location_from_config_file etc/fiasco.conf [pwd]/kernel/fiasco/fiasco]
}
proc bin_dir { } {
if {[have_spec x86_32]} { return "[l4_dir]/bin/x86_586" }
puts stderr "Error: Cannot determine bin directory"
exit 1
}
set fiasco_serial_esc_arg "-serial_esc "
proc run_boot_string { } {
return "\nL4 Bootstrapper"
}
proc core_link_address { } { return "0x01000000" }
##
# Populate boot directory with binaries on fiasco
#
proc run_boot_dir {binaries} {
build { lib/ld/fiasco kernel bootstrap sigma0 }
build_core_image $binaries
global fiasco_serial_esc_arg
exec mkdir -p [run_dir]/fiasco
# assert existence of the L4 build directory
l4_dir
puts "using fiasco kernel [fiasco]"
exec cp [fiasco] [run_dir]/fiasco/fiasco
puts "using sigma0/bootstrap at [l4_dir]"
exec cp [bin_dir]/l4v2/sigma0 [run_dir]/fiasco
exec cp [bin_dir]/bootstrap [run_dir]/fiasco
if {[have_include "image/iso"] || [have_include "image/disk"]} {
#
# Install isolinux/GRUB files and bender
#
install_iso_bootloader_to_run_dir
#
# Generate GRUB config file
#
# The core binary is part of the 'binaries' list but it must
# appear right after 'sigma0' as boot module. Hence the special case.
#
set fh [open "[run_dir]/boot/grub/menu.lst" "WRONLY CREAT TRUNC"]
puts $fh "timeout 0"
puts $fh "default 0"
puts $fh "\ntitle Genode on L4/Fiasco"
puts $fh " kernel /boot/bender"
puts $fh " module /fiasco/bootstrap -serial"
puts $fh " module /fiasco/fiasco -serial -jdb_cmd=JH $fiasco_serial_esc_arg"
puts $fh " module /fiasco/sigma0"
puts $fh " module /image.elf"
puts $fh " vbeset 0x117 506070"
close $fh
}
run_image
if {[have_include "load/tftp"]} {
#
# Install PXE bootloader pulsar
#
install_pxe_bootloader_to_run_dir
#
# Generate pulsar config file
#
set fh [open "[run_dir]/config-52-54-00-12-34-56" "WRONLY CREAT TRUNC"]
puts $fh " exec /boot/bender"
puts $fh " load /fiasco/bootstrap -serial"
puts $fh " load /fiasco/fiasco -serial -serial_esc -jdb_cmd=JH"
puts $fh " load /fiasco/sigma0"
puts $fh " load /image.elf"
close $fh
generate_tftp_config
}
if {[have_include "load/ipxe"]} {
create_ipxe_iso_config
update_ipxe_boot_dir
create_symlink_for_iso
}
}