cosmopolitan/ape
Justine Tunney f0600a898c Fix metal bugs so deathstar.com runs in qemu (#20)
- Remove XD bit in page tables
- Fix cylinder+head+sector arithmetic
- Implement fstat() for serial file descriptors on metal

Here's how to boot an Actually Portable Executable in QEMU:

    make -j12 o//tool/viz/deathstar.com
    qemu-system-x86_64 -serial stdio -fda o//tool/viz/deathstar.com

Here's a screenshot of DEATHSTAR.COM booted in QEMU:
https://justine.lol/cosmopolitan/cosmo-metal-qemu.png

Thus metal support is in much better shape now, but still incomplete.
Only a few system calls have been polyfilled. To figure out which ones
your program needs, simply boot it in the blinkenlights emulator with a
breakpoint, and press CTRL-C to continue to the system call breakpoint.
If it doesn't break then you should be good. (Note: to emulate normally
you can press 'c' and use CTRL-T and ALT-T to tune the speed.)

    m=tiny
    make -j12 SILENT=0 MODE=$m          \
      o/$m/tool/build/blinkenlights.com \
      o/$m/tool/viz/deathstar.com
    o/$m/tool/build/blinkenlights.com   \
      -r -t -b systemfive.linux         \
      o/$m/tool/viz/deathstar.com

Thank @Theldus for the bug report that made this change possible.
Fixes #20 which explains this change further.
2021-01-16 17:52:15 -08:00
..
etc Initial import 2020-06-15 07:18:57 -07:00
lib Fix metal bugs so deathstar.com runs in qemu (#20) 2021-01-16 17:52:15 -08:00
ape.lds Change license 2020-12-27 17:18:44 -08:00
ape.mk Get Cosmopolitan into releasable state 2020-11-25 08:19:00 -08:00
ape.S Fix metal bugs so deathstar.com runs in qemu (#20) 2021-01-16 17:52:15 -08:00
config.h Auto-generate some documentation 2020-12-26 02:09:07 -08:00
idata.internal.h Replace .pushsection directives (#30) 2021-01-10 13:36:31 -08:00
macros.internal.h Make improvements 2020-12-01 03:43:40 -08:00
mz.ansi Initial import 2020-06-15 07:18:57 -07:00
notice.inc Initial import 2020-06-15 07:18:57 -07:00
relocations.h Auto-generate some documentation 2020-12-26 02:09:07 -08:00