In-tree toolchain for playstation2--almost

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

With the switch of playstation2 to gcc 5.3, binutils 2.26 and gdb 7.10,
I was eager to give it a whirl.

A few bits remain to be fixed.

First, "sys/arch/playstation2/machdep_locore.S" has comments of the form:

   # line +0

in the cache-management primitives that, although starting with a TAB
character, confuse the preprocessor into thinking it's a "#line" directive
and choking on the "+0" as being not a positive integer(!).

I wrapped them in C-style comments and that seems to have satisfied it.

Second, binutils for mipsel (and mipseb and aarch64) seems to need more
'mk-native' love.  The architecture-specific "bfd.h" files are missing
a number of processor ID macros (including MIPS_R5900 which the
playstation2 has).  As well, "struct bfd" is missing a number of expected
fields and some macros are now functions or are defined externally.

I h4XX0r3d mine up by transplanting the analogous pieces from the
mips64el "bfd.h" and that worked until it got to something that was
missing entirely:

[...]
/x/current/src/external/gpl3/binutils/dist/bfd/targets.c:935:2: note: in expansion of macro 'SELECT_VECS'
  SELECT_VECS,
  ^
<command-line>:0:44: error: 'bfd_elf32_tradbigmips_vec' undeclared here (not in a function)
[...]

and more like it with different widths/endianness/object-format/etc.


Thanks for all the work so far.

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