[Bug gas/25469] [Z80][PATCH] Add support for GameBoy Z80 CPU and .cfi directives

[sergey.belyashov at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25469

Sergey Belyashov <sergey.belyashov at gmail dot com> changed:

           What    |Removed                     |Added
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  Attachment #12242|0                           |1
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--- Comment #6 from Sergey Belyashov <sergey.belyashov at gmail dot com> ---
Created attachment 12249
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12249&action=edit
Add support GBZ80, Z80N CPUs and DWARF

Fix one test (used label name `a', which is Z80 register name)

eh5 test is still failed (it is new test, which is enabled after enabling of
DWARF). I think, problem is another place. For example, elf/discard tests fails
due to silence of linker (test expects warning). Linker silently succeed due to
discarding of symbol which should go to discard section. I think, same bug
causes failure of PR 10549 (GNU OS ABI on STB_GNU_UNIQUE). I completely do not
understand what happens there.

Moreover, there are two assertion fails in four places of testsuit:
./ld-new: BFD (GNU Binutils) 2.34.50.20200127 assertion fail
../../bfd/elf.c:3550
./ld-new: BFD (GNU Binutils) 2.34.50.20200127 assertion fail
../../bfd/elf.c:3655

This change patch no regressions (at least, detectible by tests).

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