Fixes a bug where the last written load command would accidentally
override the beginning of the __text section. Also defines missing
MachO constants and relocation structs/enums.
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
The `entry_point_command` is a replacement for `thread_command`, and
is used for main executables to specify the location of `main()`
entry point.
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
This commit write out Mach-O header in the linker's `flush`
method. The header currently only populates the magic number,
filetype, and cpu info.
Signed-off-by: Jakub Konka <kubkon@jakubkonka.com>
