https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122516
--- Comment #12 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #11)
> Ok, I finally figured out where this inline-asm is coming from `crtstuff.c`:
> ```
> #ifndef CRT_CALL_STATIC_FUNCTION
> # define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
> static void __attribute__((__used__)) \
> call_ ## FUNC (void) \
> { \
> asm (SECTION_OP); \
> FUNC (); \
> FORCE_CODE_SECTION_ALIGN \
> asm (__LIBGCC_TEXT_SECTION_ASM_OP__); \
> }
> #endif
> ```
> So part of the broken-ness here is the use of __LIBGCC_TEXT_SECTION_ASM_OP__
> .
> For most targets ".previous" will fix it by going back into the correct
> section. The only thing is how can we detect if ".previous" is ok for here
> and then it is ok with defining SUPPORTS_SHF_GNU_RETAIN in GCC's check.
.previous is supported since Binutils 2.12, which was released in 2002
https://sourceware.org/binutils/docs-2.12/as.info/Previous.html
So maybe HAVE_GNU_AS && HAVE_GNU_LD && TARGET_ASM_NAMED_SECTION is a reasonable
proxy? Or rolling own test, similar to
gcc/configure.ac::HAVE_GAS_SUBSECTION_ORDERING.
