On Tuesday, 19 November 2013 at 22:49:07 UTC, John Carter wrote:
What would it take to "Boot to D"?
Check this out:
http://arsdnet.net/dcode/minimal.zip
I stripped out druntime, then put back only enough to get many of
the language features working, but all standing alone. The
makefile.bare (or whatever i called it) can make an elf image
that can be loaded by GRUB onto bare x86 metal and run the little
D program.
Though...
Typically things like stack setup, program load, register
initialization, zero'ing .bss segments and copying .data
segments into ram etc. etc.
this stuff is all done by GRUB, so I cheated a little. It
shouldn't be too hard to do in D though, if nothing else, a naked
inline asm function at the start location.
Sometime mmap or sbrk for heap management.
and I didn't do much heap at all, I just dropped stuff in
somewhere. But that's because I'm lazy more than because it is
hard.
