ld: Add "-z separate-code" option to ELF linker

[thirdparty/binutils-gdb.git] / ld / emultempl / elf32.em

diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index a12aefa9cb33632e3933b2b82b7a90cd1df9c5a7..8ff19bf8833f93313b7eecdc3453c7b9bb164688 100644 (file)
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -2367,13 +2367,25 @@ if test -n "$GENERATE_PIE_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
 echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code'         >> e${EMULATION_NAME}.c
+echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xdwe               >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
 echo '             && link_info.relro'                 >> e${EMULATION_NAME}.c
 echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xdw                        >> e${EMULATION_NAME}.c
 echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code'         >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc) return'     >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xdce               >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
 echo '             && link_info.combreloc) return'     >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xdc                        >> e${EMULATION_NAME}.c
 fi
+echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xde                        >> e${EMULATION_NAME}.c
 echo '  ; else if (bfd_link_pie (&link_info)) return'  >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xd                 >> e${EMULATION_NAME}.c
 fi
@@ -2381,24 +2393,45 @@ if test -n "$GENERATE_SHLIB_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 echo '  ; else if (bfd_link_dll (&link_info)'          >> e${EMULATION_NAME}.c
 echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code'         >> e${EMULATION_NAME}.c
+echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xswe               >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_dll (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
 echo '             && link_info.relro'                 >> e${EMULATION_NAME}.c
 echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xsw                        >> e${EMULATION_NAME}.c
 echo '  ; else if (bfd_link_dll (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xsce                       >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_dll (&link_info)'          >> e${EMULATION_NAME}.c
 echo '             && link_info.combreloc) return'     >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xsc                        >> e${EMULATION_NAME}.c
 fi
+echo '  ; else if (bfd_link_dll (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xse                        >> e${EMULATION_NAME}.c
 echo '  ; else if (bfd_link_dll (&link_info)) return'  >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xs                 >> e${EMULATION_NAME}.c
 fi
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 echo '  ; else if (link_info.combreloc'                        >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code'         >> e${EMULATION_NAME}.c
+echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xwe                        >> e${EMULATION_NAME}.c
+echo '  ; else if (link_info.combreloc'                        >> e${EMULATION_NAME}.c
 echo '             && link_info.relro'                 >> e${EMULATION_NAME}.c
 echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xw                 >> e${EMULATION_NAME}.c
+echo '  ; else if (link_info.combreloc'                        >> e${EMULATION_NAME}.c
+echo '             && link_info.separate_code) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xce                        >> e${EMULATION_NAME}.c
 echo '  ; else if (link_info.combreloc) return'                >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xc                 >> e${EMULATION_NAME}.c
 fi
+echo '  ; else if (link_info.separate_code) return'            >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xe                 >> e${EMULATION_NAME}.c
 echo '  ; else return'                                 >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.x                  >> e${EMULATION_NAME}.c
 echo '; }'                                             >> e${EMULATION_NAME}.c
@@ -2431,15 +2464,30 @@ fragment <<EOF
           && link_info.combreloc
           && link_info.relro
           && (link_info.flags & DF_BIND_NOW))
-    return "ldscripts/${EMULATION_NAME}.xdw";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xdwe";
+      else
+       return "ldscripts/${EMULATION_NAME}.xdw";
+    }
   else if (bfd_link_pie (&link_info)
           && link_info.combreloc)
-    return "ldscripts/${EMULATION_NAME}.xdc";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xdce";
+      else
+       return "ldscripts/${EMULATION_NAME}.xdc";
+    }
 EOF
 fi
 fragment <<EOF
   else if (bfd_link_pie (&link_info))
-    return "ldscripts/${EMULATION_NAME}.xd";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xde";
+      else
+       return "ldscripts/${EMULATION_NAME}.xd";
+    }
 EOF
 fi
 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
@@ -2447,28 +2495,58 @@ if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 fragment <<EOF
   else if (bfd_link_dll (&link_info) && link_info.combreloc
           && link_info.relro && (link_info.flags & DF_BIND_NOW))
-    return "ldscripts/${EMULATION_NAME}.xsw";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xswe";
+      else
+       return "ldscripts/${EMULATION_NAME}.xsw";
+    }
   else if (bfd_link_dll (&link_info) && link_info.combreloc)
-    return "ldscripts/${EMULATION_NAME}.xsc";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xsce";
+      else
+       return "ldscripts/${EMULATION_NAME}.xsc";
+    }
 EOF
 fi
 fragment <<EOF
   else if (bfd_link_dll (&link_info))
-    return "ldscripts/${EMULATION_NAME}.xs";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xse";
+      else
+       return "ldscripts/${EMULATION_NAME}.xs";
+    }
 EOF
 fi
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 fragment <<EOF
   else if (link_info.combreloc && link_info.relro
           && (link_info.flags & DF_BIND_NOW))
-    return "ldscripts/${EMULATION_NAME}.xw";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xwe";
+      else
+       return "ldscripts/${EMULATION_NAME}.xw";
+    }
   else if (link_info.combreloc)
-    return "ldscripts/${EMULATION_NAME}.xc";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xce";
+      else
+       return "ldscripts/${EMULATION_NAME}.xc";
+    }
 EOF
 fi
 fragment <<EOF
   else
-    return "ldscripts/${EMULATION_NAME}.x";
+    {
+      if (link_info.separate_code)
+       return "ldscripts/${EMULATION_NAME}.xe";
+      else
+       return "ldscripts/${EMULATION_NAME}.x";
+    }
 }
 
 EOF
@@ -2738,6 +2816,10 @@ fragment <<EOF
        link_info.relro = TRUE;
       else if (strcmp (optarg, "norelro") == 0)
        link_info.relro = FALSE;
+      else if (strcmp (optarg, "separate-code") == 0)
+       link_info.separate_code = TRUE;
+      else if (strcmp (optarg, "noseparate-code") == 0)
+       link_info.separate_code = FALSE;
       else if (strcmp (optarg, "common") == 0)
        link_info.elf_stt_common = elf_stt_common;
       else if (strcmp (optarg, "nocommon") == 0)