Re: Question for ARM person re asm_fprintf

[Hans-Peter Nilsson <hp at bitrange dot com>]

On Mon, 21 Jul 2014, David Wohlferd wrote:

> I have been looking at asm_fprintf in final.c, and I think there's a design
> flaw.  But since the change affects ARM and since I have no access to an ARM
> system, I need a second opinion.

There's this thing called cross-compilation, which happens for
more than 99% (my guess) of the compiled ARM code distributed in
the world - and I believe what most people here do ARM-wise.
(Your target system doesn't have to match your host system!)

> It would be helpful if someone could confirm that it still
> compiles without error under ARM after applying this patch.  I'm reluctant to
> post this to gcc-patches when it has never been run.

Not that the following would constitute the actual testing
usually required for a patch, but:

/path/to/toplevel/configure --target=arm-eabi && make all-gcc
# Yay, the compiler-proper for a "bare iron" ARM compiler.

./gcc/xgcc -B./gcc -S test.c

Woot, compiled your first ARM program. :)  Just emitting text
assembly code, and #include's won't work, but a missing-case
leading-to-abort would be prominently noticed as an internal
compiler error.

The page <https://gcc.gnu.org/simtest-howto.html> is
unfortunately out of date (e.g. binutils+sim now lives in the
same git repo) but it gives you the idea.

Happy hacking.
brgds, H-P