[adtools] questions about the GCC port
- From: Gunther Nikl <gni@xxxxxxxx>
- To: adtools@xxxxxxxxxxxxx
- Date: Thu, 28 Jul 2005 16:09:29 +0200
Hello!
I looked through rs6000/amigaos.h, rs6000/amigaos.c and rs6000/rs6000.c and
now I have questions which hopefully someone can answer.
- TARGET_OS_CPP_BUILTINS: Most of the time builtin_define() is used.
Shouldn't that be builtin_define_std() to let the compiler handle
what symbol versions should be defined?
Its probably also a good idea to move some stuff into
TARGET_CPU_CPP_BUILTINS.
- CPP_<clib>_SPEC: All symbol definitions should be moved into the
compiler since builtin_define_std() knows better how to deal with
-ansi and -std=. Since the used crt is recorded in amigaos_crt_string
thats not all that hard.
- clib handling: This looks very complicated. I would suggest to unify
this as much as possible. It seems at least newlib/ixemul/libnix can
be unified by using a "%(crt)" declaration, eg.:
-isystem %(base_sdk)%(crt)/include
-isystem %(base_sdk)local/%(crt)/include
That doesn't work for clib2.
- Does supporting little endian compilation make any sense? If not its
possible to remove it by defining BYTES_BIG_ENDIAN/WORDS_BIG_ENDIAN.
That way one can also disable support for TARGET_POWER[2].
- Why is JUMP_TABLES_IN_TEXT_SECTION redefined? AFAICT the rs6000/sysv.h
is fine.
- Why was MASK_REGNAMES choosen as TARGET_DEFAULT?
- TARGET_ASM_FUNCTION_END_PROLOGUE: This is used to emit the call to
"__baserel_get_addr". Can't this be done in RTL the same way as its
done to save the baseregister?
Thank you,
Gunther
--
Linux is only free if your time has no value
- Jamie Zawinski
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