Improve support for shared libs linked at non-zero addreses:
- rename private values in struct elf_object to better
describe their meaning:
s/load_offs/obj_base/ "object's address '0' base"

Improve support for shared libs linked at non-zero addreses:
- rename private values in struct elf_object to better
describe their meaning:
s/load_offs/obj_base/ "object's address '0' base"
s/load_addr/load_base/ "The base address of the loadable
segments"
- gdb needs the obj_base value so swap positions with load_base in
struct elf_object
- fix a few occurrences of where load_base was used instead of
obj_base.

With help and okay drahn@

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Use rounded down address when changing memory protections on the GOT, such
that we don't accidentally touch the page after the GOT.

Bug found on sparc64 affected other platforms as well.

ok ketteni

Use rounded down address when changing memory protections on the GOT, such
that we don't accidentally touch the page after the GOT.

Bug found on sparc64 affected other platforms as well.

ok kettenis@

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Make _dl_md_reloc_got() report errors, and take them into account.
Fixes PR #5579.

Provide hook so that rthreads can provide a spinlock to protect from races
in lazy binding. ok art@, kurt@

Put the workaround back in because gcc fails to build otherwise. ok deraadt@

Revert a workaround that was put in for softfpu ABI violations, hardfp doesnt.
ok miod.

Kludge around a horrible problem where gcc 'knows' that __udivsi3 will
only clobber r0 and r4, and will not modify any other registers. Unfortunately
calling thru the PLT clobbers other registers eg,

Kludge around a horrible problem where gcc 'knows' that __udivsi3 will
only clobber r0 and r4, and will not modify any other registers. Unfortunately
calling thru the PLT clobbers other registers eg, r1, which then
breaks because gcc doesn't reload the proper value.

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remove '#if 0' block.

better...

Getting much closer.

Not quite working ld.so support for sh