Fix: ia16-elf-gcc code wrongly assumed XMS driver preserves %bx

FDOS / freecom

FreeDOS Command Shell (command.com)

http://www.freedos.org/

GNU General Public License v2.0

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Fix: ia16-elf-gcc code wrongly assumed XMS driver preserves %bx #2

Closed tkchia closed 6 years ago

tkchia commented 6 years ago

This proposed patch fixes a problem which (on my machine) was causing FreeCOM compiled with xms-swap gcc to swap only part of the transient stack area --- rather than the whole stack --- to XMS, and back. The bug ultimately would cause FreeCOM to crash when one tries to EXIT from the shell.

Thank you!

bartoldeman commented 6 years ago

Thanks! I will make the same change to the OW pragma aux for XMS too.