Thanks,
so I will try to have some fun with debugging softfp, 'fortuately' the
first issue manifested itself in multiplying two numbers, may the gods
of gdb smile on me!
Michael
Am 14.02.2021 um 14:19 schrieb Florian Klämpfl via fpc-devel:
Am 14.02.21 um 14:08 schrieb Michael Ring via fpc-devel:
I am having a lot of (no-)fun with floating point on Cortex-M0,
current summary would be to say that things get pretty unreliable
once I start using Floats.
I today stumbled over -CfLIBGCC, sounds interesting, but compiling
cross-compiler trunk with this option ends up in an error:
/Library/Developer/CommandLineTools/usr/bin/make -C embedded all
/Users/ring/fpcupdeluxe-embedded/fpc/bin/x86_64-darwin/ppcarm
-Cparmv6m -Ur -Tembedded -Parm -XParm-none-eabi- -Ur -Xs -O2 -n
-Fi../inc -Fi../arm
-FD/Users/ring/fpcupdeluxe-embedded/fpc/bin/x86_64-darwin -FE.
-FU/Users/ring/devel/freepascal/rtl/units/arm-embedded
-vw-n-h-l-d-u-t-p-c- -ap
-Fl/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib -darm
-dRELEASE -O1 -g -Cflibgcc -Us -Sg system.pp @system.cfg
system.inc(426,5) Fatal: Internal error 200312126
Fatal: Compilation aborted
Is the option worth asking for a fix so that it compiles again or is
it anyway so experimental that I better try to find the issues within
softfp?
libgcc was never really usable on any target. softfpu works very well
on most targets, so it is most likely a simple armv6m issue. I propose
we hunt the armv6m issue down, it is probably just a simple cg issue
which surfaces by the softfloat code.
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