>>>>> Linas Vepstas writes:
> I've been working on a port of gcc/binutils/glibc to a new
> architecture, the IBM mainframe 360/370/390 architecture. I've got
> something sort of working and need some advice & pointers. Long list
> follows:
> 1) where are the latest gcc sources? I'm working on gcc-2.8.1
> and have a core dump. Before I hit my head on it too hard, I'd
> like to work with the latest.
Check egcs from http://egcs.cygnus.com
> 2) the core dump is in cc1, in cse.c and only occurs when -O2 is
> specified. Some instruction that wants to use a condition code
> gets scheduled before the condition code is set. This causes a core
> dump. Does this sound like a known bug?
> 3) How does one go about debugging something like this? The -da
> flag was interesting, but I have no simple test case to demonstrate
> the bug. Any tools I should be aware of?
> 4) how hard is it to take a gcc machine description file & port it
> to egcs? Should I stick to gcc or is egcs really the future?
> 5) who owns crt0.o? the kernel? libc ? it seems not to be part of
> binutils or gcc.
> 6) what's the best way to bootstrap an elf loader? In particular,
> say I wanted to write something that will load and run elf binaries
> (that have been linked to glibc) on MVS. What's the quickest way to
> hack this up?
> 7) I'm trying to cross-compile glibc-2.0.6 but the cross-compiler
> configure setup is a bit broken & requires nasty hacks. Is
> cross-compiling fixed or improved in a later version?
Please explain this in more detail. The last cross compile I did was
the test release 2.0.95 of glibc 2.1 and it worked.
> 8) what's the secret to configing the right math libs & etc for glibc?
You want to look through the sysdeps dir and check Implies.
> 9) is there a way of compiling glibc with support for long-long crippled
> out? My version of gcc craps out on long long and I don't feel like
> fixing it right now ...
Not that I know of.
Andreas
--
Andreas Jaeger [EMAIL PROTECTED] [EMAIL PROTECTED]
for pgp-key finger [EMAIL PROTECTED]
