ld: Add TEXT_SEGMENT_ALIGN/TEXT_SEGMENT_{RELRO_}END

Text-only LOAD segment has the same requirement for segment alignment
and page sizes as GNU_RELRO segment.  But for GNU_RELRO segment, the
segment may not end at the same address of the end of data segment.  But
text-only LOAD segment is exactly the same as text LOAD segment.

This patch adds TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and
TEXT_SEGMENT_END, which mimic DATA_SEGMENT_ALIGN, DATA_SEGMENT_RELRO_END
and DATA_SEGMENT_END.  They work on text segment, instead of data
segment.  TEXT_SEGMENT_ALIGN is placed at the start of text sections.
Both TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END are placed at the end
of text sections.  TEXT_SEGMENT_ALIGN is created from DATA_SEGMENT_ALIGN
by replacing DATA_SEGMENT_ALIGN with TEXT_SEGMENT_ALIGN.  It simply sets
text_start and text_end from TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END
and TEXT_SEGMENT_END the same way as relro_start and relro_end are set
from DATA_SEGMENT_ALIGN, DATA_SEGMENT_RELRO_END and DATA_SEGMENT_END.

include/

	PR ld/22393
	* bfdlink.h (bfd_link_info): Add text_start and text_end.

ld/

	PR ld/22393
	* ldexp.c (exp_print_token): Add TEXT_SEGMENT_ALIGN,
	TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END.
	(fold_unary): Handle TEXT_SEGMENT_END.
	(fold_binary): Handle TEXT_SEGMENT_RELRO_END and
	TEXT_SEGMENT_END.
	(exp_unop): Also check TEXT_SEGMENT_END.
	* ldexp.h (ldexp_control): Add textseg.
	* ldgram.y: Handle TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END
	and TEXT_SEGMENT_END.
	* ldlang.c (strip_excluded_output_sections): Also set
	expld.textseg.phase to exp_seg_none.
	(lang_size_sections_1): Also call ldlang_check_relro_region with
	&expld.textseg.
	(lang_size_relro_segment): Also handle expld.textseg.
	(lang_size_sections): Also handle expld.textseg.  Set
	link_info.text_start and link_info.text_end for -z textonly.
	(lang_find_relro_sections): Also check expld.textseg.
	* ldlex.l: Add TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and
	TEXT_SEGMENT_END.
	* scripttempl/elf.sc (TEXT_SEGMENT_ALIGN): New.
	(TEXT_SEGMENT_RELRO_END): Likewise.
	(TEXT_SEGMENT_END): Likewise.
	Add ${TEXT_SEGMENT_ALIGN} before text sections and add
	${TEXT_SEGMENT_RELRO_END}/${TEXT_SEGMENT_END} after text
	sections for non-relocatable link.

0 files changed, 0 insertions, 0 deletions