MIPS: Add options to control branch ISA checks

[deliverable/binutils-gdb.git] / ld / emultempl / mipself.em

diff --git a/ld/emultempl/mipself.em b/ld/emultempl/mipself.em
index 9ac61a2a4711bb51f145d8e69699255bc122408d..cd68707ec388046c83fdaa1b240ce3ace378a835 100644 (file)
--- a/ld/emultempl/mipself.em
+++ b/ld/emultempl/mipself.em
@@ -1,5 +1,5 @@
 # This shell script emits a C file. -*- C -*-
-#   Copyright 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
+#   Copyright (C) 2004-2017 Free Software Foundation, Inc.
 #
 # This file is part of the GNU Binutils.
 #
@@ -33,6 +33,9 @@ fragment <<EOF
 static lang_input_statement_type *stub_file;
 static bfd *stub_bfd;
 
+static bfd_boolean insn32;
+static bfd_boolean ignore_branch_isa;
+
 static void
 mips_after_parse (void)
 {
@@ -45,7 +48,7 @@ mips_after_parse (void)
       link_info.emit_hash = TRUE;
       link_info.emit_gnu_hash = FALSE;
     }
-  after_parse_default ();
+  gld${EMULATION_NAME}_after_parse ();
 }
 
 struct hook_stub_info
@@ -134,7 +137,6 @@ mips_add_stub_section (const char *stub_sec_name, asection *input_section,
 {
   asection *stub_sec;
   flagword flags;
-  const char *secname;
   lang_output_section_statement_type *os;
   struct hook_stub_info info;
 
@@ -174,9 +176,7 @@ mips_add_stub_section (const char *stub_sec_name, asection *input_section,
   if (!bfd_set_section_flags (stub_bfd, stub_sec, flags))
     goto err_ret;
 
-  /* Create an output section statement.  */
-  secname = bfd_get_section_name (output_section->owner, output_section);
-  os = lang_output_section_find (secname);
+  os = lang_output_section_get (output_section);
 
   /* Initialize a statement list that contains only the new statement.  */
   lang_list_init (&info.add);
@@ -199,6 +199,12 @@ mips_add_stub_section (const char *stub_sec_name, asection *input_section,
 static void
 mips_create_output_section_statements (void)
 {
+  struct elf_link_hash_table *htab;
+
+  htab = elf_hash_table (&link_info);
+  if (is_elf_hash_table (htab) && is_mips_elf (link_info.output_bfd))
+    _bfd_mips_elf_linker_flags (&link_info, insn32, ignore_branch_isa);
+
   if (is_mips_elf (link_info.output_bfd))
     _bfd_mips_elf_init_stubs (&link_info, mips_add_stub_section);
 }
@@ -211,7 +217,7 @@ mips_before_allocation (void)
   flagword flags;
 
   flags = elf_elfheader (link_info.output_bfd)->e_flags;
-  if (!link_info.shared
+  if (!bfd_link_pic (&link_info)
       && !link_info.nocopyreloc
       && (flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) == EF_MIPS_CPIC)
     _bfd_mips_elf_use_plts_and_copy_relocs (&link_info);
@@ -241,6 +247,61 @@ mips_lang_for_each_input_file (void (*func) (lang_input_statement_type *))
 
 EOF
 
+# Define some shell vars to insert bits of code into the standard elf
+# parse_args and list_options functions.
+#
+PARSE_AND_LIST_PROLOGUE='
+enum
+  {
+    OPTION_INSN32 = 301,
+    OPTION_NO_INSN32,
+    OPTION_IGNORE_BRANCH_ISA,
+    OPTION_NO_IGNORE_BRANCH_ISA
+  };
+'
+
+PARSE_AND_LIST_LONGOPTS='
+  { "insn32", no_argument, NULL, OPTION_INSN32 },
+  { "no-insn32", no_argument, NULL, OPTION_NO_INSN32 },
+  { "ignore-branch-isa", no_argument, NULL, OPTION_IGNORE_BRANCH_ISA },
+  { "no-ignore-branch-isa", no_argument, NULL, OPTION_NO_IGNORE_BRANCH_ISA },
+'
+
+PARSE_AND_LIST_OPTIONS='
+  fprintf (file, _("\
+  --insn32                    Only generate 32-bit microMIPS instructions\n"
+                  ));
+  fprintf (file, _("\
+  --no-insn32                 Generate all microMIPS instructions\n"
+                  ));
+  fprintf (file, _("\
+  --ignore-branch-isa         Accept invalid branch relocations requiring\n\
+                              an ISA mode switch\n"
+                  ));
+  fprintf (file, _("\
+  --no-ignore-branch-isa      Reject invalid branch relocations requiring\n\
+                              an ISA mode switch\n"
+                  ));
+'
+
+PARSE_AND_LIST_ARGS_CASES='
+    case OPTION_INSN32:
+      insn32 = TRUE;
+      break;
+
+    case OPTION_NO_INSN32:
+      insn32 = FALSE;
+      break;
+
+    case OPTION_IGNORE_BRANCH_ISA:
+      ignore_branch_isa = TRUE;
+      break;
+
+    case OPTION_NO_IGNORE_BRANCH_ISA:
+      ignore_branch_isa = FALSE;
+      break;
+'
+
 LDEMUL_AFTER_PARSE=mips_after_parse
 LDEMUL_BEFORE_ALLOCATION=mips_before_allocation
 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=mips_create_output_section_statements