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* doc/c-mmix.texi (MMIX-Opts): Document --no-pushj-stubs and
--no-stubs.
* config/tc-mmix.c: Include limits.h. Expand on mmix_relax_table
comment.
(expand_op, mmix_next_semicolon_is_eoln): Fix head comment.
(pushj_stubs): New variable.
(OPTION_NOPUSHJSTUBS, STATE_PUSHJSTUB, PUSHJSTUB_MIN)
(PUSHJSTUB_MAX): New macros.
(md_longopts): New options "--no-pushj-stubs" and synonym
"--no-stubs".
(mmix_relax_table): Handle new entry for STATE_PUSHJSTUB.
(md_parse_option): Handle OPTION_NOPUSHJSTUBS.
(md_estimate_size_before_relax): Modify STATE_PUSHJ state for
PUSHJ stub relaxation.
(md_convert_frag): Handle STATE_PUSHJSTUB.
(md_apply_fix3): Handle BFD_RELOC_MMIX_PUSHJ_STUBBABLE.
(tc_gen_reloc): Ditto.
(mmix_md_relax_frag): Handle PUSHJ stub relaxation.
* config/tc-mmix.h (TC_SEGMENT_INFO_TYPE): Define.
(struct mmix_segment_info_type): New.
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(tc_frob_file_before_adjust): Don't define.
* config/tc-mmix.c (mmix_frob_local_reloc): Remove unused
function.
(mmix_frob_file_before_adjust): Remove ineffective function.
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* config/tc-mmix.h: Likewise.
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base-plus-offset relocs to the linker.
* config/tc-mmix.c: Tweak and fix typos in comments.
(allocate_undefined_gregs_in_linker): New variable.
(OPTION_LINKER_ALLOCATED_GREGS): New option macro.
(md_longopts): Add --linker-allocated-gregs.
(md_parse_option) <case 'x'>: Imply --linker-allocated-gregs.
<case OPTION_LINKER_ALLOCATED_GREGS>: New.
(md_show_usage): Update text for -x. Add text for
--linker-allocated-gregs.
(tc_gen_reloc): Derive default value for addend from val and
baddsy. Use addsec and bfd_is_abs_section in more places. Don't
emit error for BFD_RELOC_MMIX_BASE_PLUS_OFFSET without suitable
GREG if allocate_undefined_gregs_in_linker.
* doc/as.texinfo (Overview) <Target MMIX options>: Add
--linker-allocated-gregs.
* doc/c-mmix.texi (MMIX-Opts): Add blurb about
--linker-allocated-gregs. Mention that it's implied by -x.
(MMIX-Pseudos) <GREG>: Mention when and how a GREG can be omitted.
(MMIX-mmixal): Clarify dated comparison and location of MMIXware.
* config/tc-mmix.h (md_parse_name): Use ISUPPER, not isupper.
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