ld: Enable using separate linker script for -z relro
[deliverable/binutils-gdb.git] / ld / genscripts.sh
index 370b22269db2ee9962153bcd19ef1edcf8724127..6300a6afcc05f086377d523aa9eceef61b46447e 100755 (executable)
 #   sun3.xn      [used when the linker is invoked with "-n"]
 #   sun3.xr      [used when the linker is invoked with "-r"]
 #   sun3.xu      [used when the linker is invoked with "-Ur"]
-# and maybe:
-#   sun3.xc      [used when the linker is invoked with "-z combreloc"]
-#   sun3.xsc     [used when the linker is invoked with "--shared"]
-#   sun3.xdc     [used when the linker is invoked with "-pie"]
-#   sun3.xa      [used when the linker is invoked with "--enable-auto-import"]
+#
+# depending on platform specific settings linker scripts with the
+# following suffixes might be generated as well:
+#
+# xdwe:   -pie    -z combreloc -z separate-code          -z now
+# xdw:    -pie    -z combreloc                  -z relro -z now
+# xdceo:  -pie    -z combreloc -z separate-code -z relro
+# xdce:   -pie    -z combreloc -z separate-code
+# xdco:   -pie    -z combreloc                  -z relro
+# xdc:    -pie    -z combreloc
+# xdeo:   -pie                 -z separate-code -z relro
+# xde:    -pie                 -z separate-code
+# xdo:    -pie                                  -z relro
+# xd:     -pie
+#
+# xswe:   -shared -z combreloc -z separate-code          -z now
+# xsw:    -shared -z combreloc                  -z relro -z now
+# xsceo:  -shared -z combreloc -z separate-code -z relro
+# xsce:   -shared -z combreloc -z separate-code
+# xsco:   -shared -z combreloc                  -z relro
+# xsc:    -shared -z combreloc
+# xseo:   -shared              -z separate-code -z relro
+# xse:    -shared              -z separate-code
+# xso:    -shared                               -z relro
+# xs:     -shared
+#
+# xwe:            -z combreloc -z separate-code          -z now
+# xw:             -z combreloc                  -z relro -z now
+# xceo:           -z combreloc -z separate-code -z relro
+# xce:            -z combreloc -z separate-code
+# xco:            -z combreloc                  -z relro
+# xc:             -z combreloc
+# xeo:                         -z separate-code -z relro
+# xe:                          -z separate-code
+# xo:                                           -z relro
+#
 #
 # It also produced the C source file:
 #
@@ -306,6 +337,20 @@ LD_FLAG=textonly
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.xe
 
+if test -n "$GENERATE_RELRO_SCRIPT"; then
+    LD_FLAG=
+    RELRO=" "
+    ( echo "/* Script for -z relo: generate normal executables with separate code segment */"
+      . ${CUSTOMIZER_SCRIPT}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xo
+    LD_FLAG=textonly
+    ( echo "/* Script for -z separate-code -z relo: generate normal executables with separate code segment */"
+      . ${CUSTOMIZER_SCRIPT}
+      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+    ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xeo
+    unset RELRO
+fi
 LD_FLAG=n
 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
 ( echo "/* Script for -n: mix text and data on same page */"
@@ -353,6 +398,25 @@ if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
   rm -f ${COMBRELOC}
   COMBRELOC=
   unset RELRO_NOW
+  if test -n "$GENERATE_RELRO_SCRIPT"; then
+      LD_FLAG=c
+      RELRO=" "
+      COMBRELOC=ldscripts/${EMULATION_NAME}.xco.tmp
+      ( echo "/* Script for -z combreloc -z relro: combine and sort reloc sections */"
+       . ${CUSTOMIZER_SCRIPT}
+       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xco
+      rm -f ${COMBRELOC}
+      LD_FLAG=ctextonly
+      COMBRELOC=ldscripts/${EMULATION_NAME}.xceo.tmp
+      ( echo "/* Script for -z combreloc -z separate-code -z relro: combine and sort reloc sections */"
+       . ${CUSTOMIZER_SCRIPT}
+       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[    ]*$//' > ldscripts/${EMULATION_NAME}.xceo
+      rm -f ${COMBRELOC}
+      COMBRELOC=
+      unset RELRO
+  fi
 fi
 
 if test -n "$GENERATE_SHLIB_SCRIPT"; then
@@ -370,6 +434,23 @@ if test -n "$GENERATE_SHLIB_SCRIPT"; then
     . ${CUSTOMIZER_SCRIPT}
     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
   ) | sed -e '/^ *$/d;s/[       ]*$//' > ldscripts/${EMULATION_NAME}.xse
+
+  if test -n "$GENERATE_RELRO_SCRIPT"; then
+      RELRO=" "
+      LD_FLAG=shared
+      (
+         echo "/* Script for ld --shared -z relro: link shared library */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[   ]*$//' > ldscripts/${EMULATION_NAME}.xso
+      LD_FLAG=sharedtextonly
+      (
+         echo "/* Script for ld --shared -z relro -z separate-code: link shared library with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[   ]*$//' > ldscripts/${EMULATION_NAME}.xseo
+      unset RELRO
+  fi
   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
     LD_FLAG=cshared
@@ -401,8 +482,27 @@ if test -n "$GENERATE_SHLIB_SCRIPT"; then
       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
     ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xswe
     rm -f ${COMBRELOC}
-    COMBRELOC=
     unset RELRO_NOW
+
+    if test -n "$GENERATE_RELRO_SCRIPT"; then
+       LD_FLAG=wshared
+       RELRO=" "
+       COMBRELOC=ldscripts/${EMULATION_NAME}.xsco.tmp
+       ( echo "/* Script for --shared -z combreloc -z relro: shared library, combine & sort relocs with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+       ) | sed -e '/^ *$/d;s/[  ]*$//' > ldscripts/${EMULATION_NAME}.xsco
+       rm -f ${COMBRELOC}
+       LD_FLAG=wsharedtextonly
+       COMBRELOC=ldscripts/${EMULATION_NAME}.xsceo.tmp
+       ( echo "/* Script for --shared -z combreloc -z relro -z separate-code: shared library, combine & sort relocs with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+       ) | sed -e '/^ *$/d;s/[  ]*$//' > ldscripts/${EMULATION_NAME}.xsceo
+       rm -f ${COMBRELOC}
+       unset RELRO
+    fi
+    COMBRELOC=
   fi
   unset CREATE_SHLIB
 fi
@@ -422,6 +522,22 @@ if test -n "$GENERATE_PIE_SCRIPT"; then
     . ${CUSTOMIZER_SCRIPT}
     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
   ) | sed -e '/^ *$/d;s/[       ]*$//' > ldscripts/${EMULATION_NAME}.xde
+  if test -n "$GENERATE_RELRO_SCRIPT"; then
+      RELRO=" "
+      LD_FLAG=pie
+      (
+         echo "/* Script for ld -pie -z relro: link position independent executable */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[   ]*$//' > ldscripts/${EMULATION_NAME}.xdo
+      LD_FLAG=pietextonly
+      (
+         echo "/* Script for ld -pie -z relro -z separate-code: link position independent executable with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+      ) | sed -e '/^ *$/d;s/[   ]*$//' > ldscripts/${EMULATION_NAME}.xdeo
+      unset RELRO
+  fi
   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
     COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
@@ -453,8 +569,28 @@ if test -n "$GENERATE_PIE_SCRIPT"; then
       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
     ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xdwe
     rm -f ${COMBRELOC}
-    COMBRELOC=
     unset RELRO_NOW
+
+    if test -n "$GENERATE_RELRO_SCRIPT"; then
+       LD_FLAG=wpie
+       RELRO=" "
+       COMBRELOC=ldscripts/${EMULATION_NAME}.xdco.tmp
+       ( echo "/* Script for -pie -z combreloc -z relro: position independent executable, combine & sort relocs with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+       ) | sed -e '/^ *$/d;s/[  ]*$//' > ldscripts/${EMULATION_NAME}.xdco
+       rm -f ${COMBRELOC}
+       LD_FLAG=wpietextonly
+       COMBRELOC=ldscripts/${EMULATION_NAME}.xdceo.tmp
+       ( echo "/* Script for -pie -z combreloc -z relro -z separate-code: position independent executable, combine & sort relocs with separate code segment */"
+         . ${CUSTOMIZER_SCRIPT}
+         . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+       ) | sed -e '/^ *$/d;s/[  ]*$//' > ldscripts/${EMULATION_NAME}.xdceo
+       rm -f ${COMBRELOC}
+
+       unset RELRO
+    fi
+    COMBRELOC=
   fi
   unset CREATE_PIE
 fi
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