71b012a810
* ldgram.y (ldgram_had_keep, KEEP): New.
(input_section_spec_no_keep): Rename from old input_section_spec.
(input_section_spec): New. Recognize KEEP.
* ldlang.c (wild_section): Handle keep sections.
(lang_gc_wild_section, lang_gc_wild_file, lang_gc_wild): New.
(lang_gc_sections_1, lang_gc_sections): New.
(lang_process): Invoke lang_gc_sections.
(lang_add_wild): Add keep argument. Update all callers.
* ldlang.h (lang_wild_statement_struct): Add keep_sections.
* ldlex.l (KEEP): Match it.
* ldmain.c (main): Error on -r and --gc-sections.
* lexsup.c: Add --gc-sections.
* scripttempl/elf.sc: Merge .text.* etc sections appropriately.
Mark startup sections with KEEP.
* scripttempl/elfppc.sc: Likewise.
* ld.texinfo: Update for --gc-sections and KEEP.
The files in this directory are linker script templates.
genscripts.sh sets some shell variables, then sources
EMULATION.sc, to generate EMULATION.{x,xr,xu,xn,xbn} -- the script
files for default, -r, -Ur, -n, -N.