avoid putting Xtensa GOT location table in non-dynamic executables

[Bob Wilson]

Dynamic Xtensa executables and shared objects may have multiple GOT tables and 
the runtime linker needs to know where they are.  We use a table to identify 
the GOT locations.  We use an identical table to identify the locations of 
constant pools in non-dynamic executables (currently used mostly to improve 
disassembly output with some patches that still need to be contributed).  The 
difference between these is that for dynamic files the table must be included 
in a loadable segment, whereas for static executables the table need not be 
loaded.  Until now, the table was _always_ in a loadable segment.  This patch 
fixes it so that the table is not loaded for static executables.  It creates 
a new ".got.loc" section only for dynamic links.  The contents of .got.loc 
are copied from the old .xt.lit section, which is now placed outside of a 
loadable segment.

Tested with an xtensa-linux target and committed on the mainline.

bfd ChangeLog:

2003-07-10  Bob Wilson  <bob.wilson@acm.org>

        * elf32-xtensa.c (elf_xtensa_create_dynamic_sections): Create new
        .got.loc section.  Do not set SEC_ALLOC or SEC_LOAD flags for the
        .xt.lit.plt section.
        (elf_xtensa_size_dynamic_sections): Set size of the .got.loc section
        and allocate memory for it.
        (elf_xtensa_combine_prop_entries): Copy contents of .xt.lit output
        section to the .got.loc section.
        (elf_xtensa_finish_dynamic_sections): Fix up call to
        elf_xtensa_combine_prop_entries and set DT_XTENSA_GOT_LOC_OFF to
        the address of .got.loc.
        (relax_property_section): Shrink .got.loc to match changes in any
        literal table section.
        (xtensa_is_property_section): Change to match
        xtensa_get_property_section_name.
        (xtensa_is_littable_section): New.

ld ChangeLog:

2003-07-10  Bob Wilson  <bob.wilson@acm.org>

	* emulparams/elf32xtensa.sh (OTHER_READONLY_SECTIONS): Replace .xt.lit
	with new .got.loc section.
	(OTHER_READWRITE_SECTIONS): Do not combine linkonce sections for
	non-relocating links.
	(OTHER_SECTIONS): Add .xt.lit here.  Change it to keep linkonce
	sections separate for non-relocating links; likewise for .xt.insn.


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