Introduce new .text.sorted.* sections.

gold/ChangeLog:

2019-11-26  Martin Liska  <mliska@suse.cz>

	* layout.cc (Layout::special_ordering_of_input_section):
	Add ".text.sorted".
	* output.cc: Special case ".text.sorted".
	* testsuite/section_sorting_name.cc: Cover also .text.sorted
	subsections.
	* testsuite/section_sorting_name.sh: Likewise.

ld/ChangeLog:

2019-11-26  Martin Liska  <mliska@suse.cz>

	* scripttempl/arclinux.sc: Add .text.sorted.* which is sorted
	by default.
	* scripttempl/elf.sc: Likewise.
	* scripttempl/elf64bpf.sc: Likewise.
	* scripttempl/nds32elf.sc: Likewise.
	* testsuite/ld-arm/arm-no-rel-plt.ld: Expect .text.sorted.*
	in the default linker script.
	* testsuite/ld-arm/fdpic-main.ld: Likewise.
	* testsuite/ld-arm/fdpic-shared.ld: Likewise.

5 files changed, 66 insertions, 3 deletions

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 9d71814..3dc2ce8 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,12 @@
+2019-11-26  Martin Liska  <mliska@suse.cz>
+
+	* layout.cc (Layout::special_ordering_of_input_section):
+	Add ".text.sorted".
+	* output.cc: Special case ".text.sorted".
+	* testsuite/section_sorting_name.cc: Cover also .text.sorted
+	subsections.
+	* testsuite/section_sorting_name.sh: Likewise.
+
 2019-11-19  Alan Modra  <amodra@gmail.com>
 
 	PR 24853
diff --git a/gold/layout.cc b/gold/layout.cc
index 194d088c..4a6a7f6 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -1129,7 +1129,8 @@ Layout::special_ordering_of_input_section(const char* name)
     ".text.unlikely",
     ".text.exit",
     ".text.startup",
-    ".text.hot"
+    ".text.hot",
+    ".text.sorted"
   };
 
   for (size_t i = 0;
diff --git a/gold/output.cc b/gold/output.cc
index df80587..428a880 100644
--- a/gold/output.cc
+++ b/gold/output.cc
@@ -3547,8 +3547,10 @@ Output_section::Input_section_sort_section_prefix_special_ordering_compare
     const Output_section::Input_section_sort_entry& s2) const
 {
   // Some input section names have special ordering requirements.
-  int o1 = Layout::special_ordering_of_input_section(s1.section_name().c_str());
-  int o2 = Layout::special_ordering_of_input_section(s2.section_name().c_str());
+  const char *s1_section_name = s1.section_name().c_str();
+  const char *s2_section_name = s2.section_name().c_str();
+  int o1 = Layout::special_ordering_of_input_section(s1_section_name);
+  int o2 = Layout::special_ordering_of_input_section(s2_section_name);
   if (o1 != o2)
     {
       if (o1 < 0)
@@ -3558,6 +3560,8 @@ Output_section::Input_section_sort_section_prefix_special_ordering_compare
       else
 	return o1 < o2;
     }
+  else if (is_prefix_of(".text.sorted", s1_section_name))
+    return strcmp(s1_section_name, s2_section_name) <= 0;
 
   // Keep input order otherwise.
   return s1.index() < s2.index();
diff --git a/gold/testsuite/section_sorting_name.cc b/gold/testsuite/section_sorting_name.cc
index 3a1d9ba..8270b40 100644
--- a/gold/testsuite/section_sorting_name.cc
+++ b/gold/testsuite/section_sorting_name.cc
@@ -50,6 +50,49 @@ int hot_foo_0002()
   return 1;
 }
 
+extern "C"
+__attribute__ ((section(".text.sorted.0002")))
+int sorted_foo_0002()
+{
+  return 1;
+}
+
+extern "C"
+__attribute__ ((section(".text.sorted.0001.abc")))
+int sorted_foo_0001_abc()
+{
+  return 1;
+}
+
+
+extern "C"
+__attribute__ ((section(".text.sorted.0001")))
+int sorted_foo_0001()
+{
+  return 1;
+}
+
+extern "C"
+__attribute__ ((section(".text.sorted.0003")))
+int sorted_foo_0003()
+{
+  return 1;
+}
+
+extern "C"
+__attribute__ ((section(".text.sorted.z")))
+int sorted_foo_z()
+{
+  return 1;
+}
+
+extern "C"
+__attribute__ ((section(".text.sorted.y")))
+int sorted_foo_y()
+{
+  return 1;
+}
+
 int vdata_0002  __attribute__((section(".data.0002"))) = 2;
 int vbss_0002 __attribute__((section(".bss.0002"))) = 0;
 
diff --git a/gold/testsuite/section_sorting_name.sh b/gold/testsuite/section_sorting_name.sh
index ae44570..00ad7cc 100755
--- a/gold/testsuite/section_sorting_name.sh
+++ b/gold/testsuite/section_sorting_name.sh
@@ -59,6 +59,12 @@ END {
 check section_sorting_name.stdout "hot_foo_0001" "hot_foo_0002"
 check section_sorting_name.stdout "hot_foo_0002" "hot_foo_0003"
 
+check section_sorting_name.stdout "sorted_foo_0001" "sorted_foo_0001_abc"
+check section_sorting_name.stdout "sorted_foo_0001_abc" "sorted_foo_0002"
+check section_sorting_name.stdout "sorted_foo_0002" "sorted_foo_0003"
+check section_sorting_name.stdout "sorted_foo_0003" "sorted_foo_y"
+check section_sorting_name.stdout "sorted_foo_y" "sorted_foo_z"
+
 check section_sorting_name.stdout "vdata_0001" "vdata_0002"
 check section_sorting_name.stdout "vdata_0002" "vdata_0003"