--- Comment #4 from aran at 100acres dot us 2009-03-28 01:34 ---
Subject: Re: cabs and cabsf are named differently on NetBSD 5
What is beyond me is how darwin_patch_builtings gets called.
It looks like it is called from rs6000.c in
rs6000_init_builtins via the macro SUBTARGET_INIT_BUILTINS.
i386.c doesn't appear to have this infrastructure. I am
not familiar enough with gcc internals to know what the
impacts might be on other platforms if I start making
changes here.
Also, these renames are only for NetBSD 5. How do I detect
the os version. The darwin example uses
darwin_macosx_version_min. Is there a NetBSD analog?
Aran
On Friday 27 March 2009 18:02:48 steven at gcc dot gnu dot
org wrote:
--- Comment #3 from steven at gcc dot gnu dot org
2009-03-28 01:02 --- Completely beyond you, how?
What gcc does for darwin (and this is a hack, mind you),
is basically replace the standard C99 builtins with
darwin-specific ones. You have to do the same for
NetBSD.
See the following files in gcc/config/:
* darwin.c
* darwin-ppc-ldouble-patch.def
The code in darwin_patch_builtin() changes the assembler
name of the builtin function to a custom, darwin-specific
version. E.g. cabsl has a PATCH_BUILTIN defines, so its
DECL_NAME is the normal cabls name but its assembler name
becomes _cabsl_$LDBL128.
You need to do something similar (but probably less ugly)
for NetBSD to make this work.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39570
