From c212f39d9a82c6c09f4a1447d9d2ff09843827c5 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Wed, 16 Feb 2022 17:41:23 +0000
Subject: ld: Support customized output section type

bfd/
    PR ld/28841
    * bfd-in2.h (struct bfd_section): Add type.
    (discarded_section): Add field.
    * elf.c (elf_fake_sections): Handle bfd_section::type.
    * section.c (BFD_FAKE_SECTION): Add field.
    * mri.c (mri_draw_tree): Update function call.

ld/
    PR ld/28841
    * ld.texi: Document new output section type.
    * ldlex.l: Add new token TYPE.
    * ldgram.y: Handle TYPE=exp.
    * ldlang.h: Add type_section to list of section types.
    * ldlang.c (lang_add_section): Handle type_section.
    (map_input_to_output_sections): Handle type_section.
    * testsuite/ld-scripts/output-section-types.t: Add tests.
    * testsuite/ld-scripts/output-section-types.d: Update.
---
 ld/ldgram.y | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

(limited to 'ld/ldgram.y')

diff --git a/ld/ldgram.y b/ld/ldgram.y
index 11c2f21..3a904e3 100644
--- a/ld/ldgram.y
+++ b/ld/ldgram.y
@@ -47,6 +47,7 @@
 #endif
 
 static enum section_type sectype;
+static etree_type *sectype_value;
 static lang_memory_region_type *region;
 
 static bool ldgram_had_keep = false;
@@ -139,6 +140,7 @@ static int error_index;
 %token LD_FEATURE
 %token NOLOAD DSECT COPY INFO OVERLAY
 %token READONLY
+%token TYPE
 %token DEFINED TARGET_K SEARCH_DIR MAP ENTRY
 %token <integer> NEXT
 %token SIZEOF ALIGNOF ADDR LOADADDR MAX_K MIN_K
@@ -1058,9 +1060,8 @@ section:	NAME
 			{
 			  ldlex_popstate ();
 			  ldlex_wild ();
-			  lang_enter_output_section_statement($1, $3, sectype,
-							      $5, $7, $4,
-							      $8, $6);
+			  lang_enter_output_section_statement ($1, $3, sectype,
+					sectype_value, $5, $7, $4, $8, $6);
 			}
 		'{'
 		statement_list_opt
@@ -1130,8 +1131,10 @@ type:
 	|  COPY    { sectype = noalloc_section; }
 	|  INFO    { sectype = noalloc_section; }
 	|  OVERLAY { sectype = noalloc_section; }
+        |  READONLY '(' TYPE '=' exp ')' { sectype = typed_readonly_section; sectype_value = $5; }
 	|  READONLY { sectype = readonly_section; }
-	;
+	|  TYPE '=' exp { sectype = type_section; sectype_value = $3; }
+        ;
 
 atype:
 		'(' type ')'
-- 
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