t-constants FAILs with GMP 6.2.1 on aarch64
tg at gmplib.org
Mon Dec 28 13:15:09 UTC 2020
[Sorry for the slow reply to your report! I have been quite busy.]
I think I understand the problem, but how to fix it is not obvious to
And GMP_ASM_RODATA likely arrives at the .text result since CFLAGS
includes -flto. Is there any reason to use CFLAGS in those tests?
It is common that CFLAGS affect the ABI and as a result the way things
are defined in asm.
The other tests seem to just switch on target systems or use
TRY_ASSEMBLE - that looks less fragile to me.
TRY_ASSEMBLE might not work too well with C snippets which we need to
use in GMP_ASM_RODATA. :-)
Defaulting to .text on aarch64 when using GOT relocations in asm
is probably asking for trouble (see my case), I think the test
should fail when running into
echo "Couldn't find label:
rather than falling back to .text. Alternatively all targets that
use explicit references to [RO]DATA should have a safer default.
For some platforms, the correct segment for RODATA is .text.
What's the collection of RODATA results "supported"? As said a
switch like for GMP_ASM_GLOBL looks less error-prone here.
Perhaps, but hardwiring things is against the spirit of autoconf and
creates a maintenance burden.
The syntax for rodata varies for between arm64 platforms.
Please encrypt, key id 0xC8601622
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