http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59672
Bug ID: 59672
Summary: Add -m16 support for x86
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hpa at zytor dot com
It would be a very good thing to have an official way to generate 16-bit
binaries on x86 (i386), even if all that is provided is a command-line flag
that issues a .code16gcc assembly directive first in the generated assembly
file.
In the Linux kernel, we currently have to do a bunch of hacks to make sure that
gcc doesn't issue any instructions *before* the .code16gcc directive:
$(call cc-option, -fno-toplevel-reorder,\
$(call cc-option, -fno-unit-at-a-time)) \
$(call cc-option, -fno-stack-protector) \
... and the list is likely to grow, which is why providing an actually
supported compiler flag for this would be desirable.
