ld: Support input section description keyword: REVERSE

  PR 27565
  * ldlex.l: Add REVERSE.
  * ldgram.y: Allow REVERSE to be used wherever a sorting command can be used.
  * ld.h (struct wildcard_spec): Add 'reversed' field.
  * ldlang.h (lang_wild_statement_struct): Add 'filenames_reversed' field.
  * ldlang.c (compare_sections): Add reversed parameter. (wild_sort): Reverse the comparison if requested. (print_wild_statement): Handle the reversed field.
  * ld.texi: Document the new feature.
  * NEWS: Mention the new feature.
  * testsuite/ld-scripts/sort-file-reversed-1.d: New test driver.
  * testsuite/ld-scripts/sort-file-reversed-1.t: New test source.
  * testsuite/ld-scripts/sort-file-reversed-2.t: New test source.
  * testsuite/ld-scripts/sort-file-reversed-2.d: New test driver.
  * testsuite/ld-scripts/sort-sections-reversed-1.d: New test driver.
  * testsuite/ld-scripts/sort-sections-reversed-1.t: New test source.
  * testsuite/ld-scripts/sort-sections-reversed-2.t: New test source.
  * testsuite/ld-scripts/sort-sections-reversed-2.d: New test driver.
  * testsuite/ld-scripts/sort-sections-reversed-3.d: New test driver.
  * testsuite/ld-scripts/sort-sections-reversed-3.t: New test source.

1 files changed, 1 insertions, 0 deletions

diff --git a/ld/ldlex.l b/ld/ldlex.l
index 94b2ea7..101f527 100644
--- a/ld/ldlex.l
+++ b/ld/ldlex.l
@@ -322,6 +322,7 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
 <WILD>"SORT"				{ RTOKEN(SORT_BY_NAME); }
 <WILD>"SORT_BY_INIT_PRIORITY"		{ RTOKEN(SORT_BY_INIT_PRIORITY); }
 <WILD>"SORT_NONE"			{ RTOKEN(SORT_NONE); }
+<WILD>"REVERSE"				{ RTOKEN(REVERSE); }
 <EXPRESSION>"NOLOAD"			{ RTOKEN(NOLOAD); }
 <EXPRESSION>"READONLY"			{ RTOKEN(READONLY); }
 <EXPRESSION>"DSECT"			{ RTOKEN(DSECT); }