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[binutils-gdb/binutils-2_27-branch] [gold] Implement HIDDEN syntax in linker scripts


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=37bb4d970f17d7f33d0621f7b81b623456b1d183

commit 37bb4d970f17d7f33d0621f7b81b623456b1d183
Author: Roland McGrath <mcgrathr@google.com>
Date:   Fri Aug 12 09:50:49 2016 -0700

    [gold] Implement HIDDEN syntax in linker scripts
    
    gold/
    	* yyscript.y (HIDDEN): New %token.
    	(assignment): Handle HIDDEN(string = expr) syntax.
    	* script.cc (script_keyword_parsecodes): Add HIDDEN.
    
    (cherry picked from commit f300578f78f5ecddc9cfb28c02d032a0acffdf70)

Diff:
---
 gold/ChangeLog  | 6 ++++++
 gold/script.cc  | 3 ++-
 gold/yyscript.y | 3 +++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 687e56e..a156163 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,9 @@
+2016-08-12  Roland McGrath  <roland@hack.frob.com>
+
+	* yyscript.y (HIDDEN): New %token.
+	(assignment): Handle HIDDEN(string = expr) syntax.
+	* script.cc (script_keyword_parsecodes): Add HIDDEN.
+
 2016-08-10  Cary Coutant  <ccoutant@gmail.com>
 
 	PR gold/20216
diff --git a/gold/script.cc b/gold/script.cc
index d6aa7b2..bb8b437 100644
--- a/gold/script.cc
+++ b/gold/script.cc
@@ -1755,6 +1755,7 @@ script_keyword_parsecodes[] =
   { "FLOAT", FLOAT },
   { "FORCE_COMMON_ALLOCATION", FORCE_COMMON_ALLOCATION },
   { "GROUP", GROUP },
+  { "HIDDEN", HIDDEN },
   { "HLL", HLL },
   { "INCLUDE", INCLUDE },
   { "INFO", INFO },
@@ -2696,7 +2697,7 @@ script_add_library(void* closurev, const char* name, size_t length)
 
   if (name_string[0] != 'l')
     gold_error(_("library name must be prefixed with -l"));
-    
+
   Input_file_argument file(name_string.c_str() + 1,
 			   Input_file_argument::INPUT_FILE_TYPE_LIBRARY,
 			   "", false,
diff --git a/gold/yyscript.y b/gold/yyscript.y
index 7e6bd27..38831d5 100644
--- a/gold/yyscript.y
+++ b/gold/yyscript.y
@@ -137,6 +137,7 @@
 %token FORCE_COMMON_ALLOCATION
 %token GLOBAL		/* global */
 %token GROUP
+%token HIDDEN
 %token HLL
 %token INCLUDE
 %token INHIBIT_COMMON_ALLOCATION
@@ -864,6 +865,8 @@ assignment:
 	      Expression_ptr e = script_exp_binary_bitwise_or(s, $3);
 	      script_set_symbol(closure, $1.value, $1.length, e, 0, 0);
 	    }
+	| HIDDEN '(' string '=' parse_exp ')'
+	    { script_set_symbol(closure, $3.value, $3.length, $5, 0, 1); }
 	| PROVIDE '(' string '=' parse_exp ')'
 	    { script_set_symbol(closure, $3.value, $3.length, $5, 1, 0); }
 	| PROVIDE_HIDDEN '(' string '=' parse_exp ')'


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