[parisc-linux] Linker problems

[Philipp Rumpf]

Okay, it looks like HP/UX ld is behaving funny for some things in the 2.3
kernel.  Most notable fs/buffer.c, buffer_init:

Assembly source piped to gas:
	addil LR'hash_table-$global$,%r27
	copy %r1,%r12
	addil LR'bh_hash_shift-$global$,%r27
	copy %r1,%r10
	addil LR'zonelists-$global$,%r27
	comib,>>= 1,%r3,L$4451

Generated object file (objdump -d --reloc fs/buffer.o):
      84:   2b 60 00 00     addil 0,dp,%r1
                        84: R_DP_RELATIVE       hash_table
      88:   08 01 02 4c     copy r1,r12
      8c:   2b 60 00 00     addil 0,dp,%r1
                        8c: R_DP_RELATIVE       bh_hash_shift
      90:   08 01 02 4a     copy r1,r10
      94:   2b 60 00 00     addil 0,dp,%r1
                        94: R_DP_RELATIVE       zonelists
      98:   8c 62 80 30     cmpib,>>= 1,r3,b8 <buffer_init+0xb8>

vmlinux (objdump -d --reloc vmlinux):
c0063884:       2b 70 30 00     addil 21800,dp,%r1
c0063888:       08 01 02 4c     copy r1,r12
c006388c:       28 0f 70 00     addil 5f800,r0,%r1
c0063890:       08 01 02 4a     copy r1,r10
c0063894:       2b 77 50 00     addil 6e800,dp,%r1
c0063898:       8c 62 80 30     cmpib,>>= 1,r3,c00638b8 <buffer_init+0xb8>


Note that 
	addil LR'bh_hash_shift-$global$,%r27
	copy %r1,%r10

ultimately becomes addil 0x5f800, _r0_, %r1, which doesn't make sense (and
causes a DPF lateron).

I haven't found anything obvious that could explain it in the linker source,
but I haven't looked too closely at it.

Sorting this out is pretty much required to get 2.3 up (otoh, we're getting to
buffer_init which is relatively far (into the parts that have changed heavily)).

Any ideas ?


	Philipp Rumpf