]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blobdiff - ld/scripttempl/elf.sc
Combine ,gnu.build.attributes.* sections into one .gnu.build.attributes section durin...
[thirdparty/binutils-gdb.git] / ld / scripttempl / elf.sc
index b4f52eba4afc960384aee50b128413bf6d91503c..6bf6936362db1fa9ad89f0213780c9f16945c95d 100644 (file)
@@ -1,5 +1,5 @@
-# Copyright (C) 2014-2015 Free Software Foundation, Inc.
-# 
+# Copyright (C) 2014-2018 Free Software Foundation, Inc.
+#
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
 # notice and this notice are preserved.
@@ -37,6 +37,7 @@
 #              writeable data sections.
 #      OTHER_GOT_SYMBOLS - symbols defined just before .got.
 #      OTHER_GOT_SECTIONS - sections just after .got.
+#      OTHER_PLT_SECTIONS - sections just after .plt.
 #      OTHER_SDATA_SECTIONS - sections just after .sdata.
 #      OTHER_BSS_SYMBOLS - symbols that appear at the start of the
 #              .bss section besides __bss_start.
@@ -54,9 +55,9 @@
 #      INPUT_FILES - INPUT command of files to always include
 #      WRITABLE_RODATA - if set, the .rodata section should be writable
 #      INIT_START, INIT_END -  statements just before and just after
-#      combination of .init sections.
+#      combination of .init sections.
 #      FINI_START, FINI_END - statements just before and just after
-#      combination of .fini sections.
+#      combination of .fini sections.
 #      STACK_ADDR - start of a .stack section.
 #      OTHER_SYMBOLS - symbols to place right at the end of the script.
 #      ETEXT_NAME - name of a symbol for the end of the text section,
@@ -120,21 +121,23 @@ test -z "${ELFSIZE}" && ELFSIZE=32
 test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
 test "$LD_FLAG" = "N" && DATA_ADDR=.
 test -z "${ETEXT_NAME}" && ETEXT_NAME=${USER_LABEL_PREFIX}etext
-test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
-test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
 test -n "$RELRO_NOW" && unset SEPARATE_GOTPLT
 test -z "$ATTRS_SECTIONS" && ATTRS_SECTIONS=".gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }"
-DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
-DATA_SEGMENT_RELRO_END=""
-DATA_SEGMENT_END=""
-if test -n "${COMMONPAGESIZE}"; then
-  if test "${SEGMENT_SIZE}" != "${MAXPAGESIZE}"; then
-    DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
-  else
-    DATA_SEGMENT_ALIGN="DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
+if test -z "$DATA_SEGMENT_ALIGN"; then
+  test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
+  test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
+  DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
+  DATA_SEGMENT_RELRO_END=""
+  DATA_SEGMENT_END=""
+  if test -n "${COMMONPAGESIZE}"; then
+    if test "${SEGMENT_SIZE}" != "${MAXPAGESIZE}"; then
+      DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
+    else
+      DATA_SEGMENT_ALIGN="DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
+    fi
+    DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
+    DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
   fi
-  DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
-  DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
 fi
 if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then
   INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
@@ -242,6 +245,12 @@ test "${LARGE_SECTIONS}" = "yes" && LARGE_SECTIONS="
     *(.ldata${RELOCATING+ .ldata.* .gnu.linkonce.l.*})
     ${RELOCATING+. = ALIGN(. != 0 ? ${ALIGNMENT} : 1);}
   }"
+PREINIT_ARRAY=".preinit_array   ${RELOCATING-0} :
+  {
+    ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_start = .);}}
+    KEEP (*(.preinit_array))
+    ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_end = .);}}
+  }"
 if test "${ENABLE_INITFINI_ARRAY}" = "yes"; then
   SORT_INIT_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))"
   SORT_FINI_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))"
@@ -303,15 +312,27 @@ DTOR=".dtors        ${CONSTRUCTING-0} :
     KEEP (*(.dtors))
     ${CONSTRUCTING+${DTOR_END}}
   }"
-STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
+STACK=".stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
   {
     ${RELOCATING+${USER_LABEL_PREFIX}_stack = .;}
     *(.stack)
+    ${RELOCATING+${STACK_SENTINEL}}
   }"
 
 TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})"
 SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})"
 
+# Don't bother with separate code segment when there are data sections
+# between .plt and .text.
+if test -z "$TINY_READONLY_SECTION"; then
+  case "$LD_FLAG" in
+    *textonly*)
+      SEPARATE_TEXT=yes
+      TEXT_SEGMENT_ALIGN=". = ALIGN(${MAXPAGESIZE});"
+      ;;
+  esac
+fi
+
 if [ -z "$SEPARATE_CODE" ]; then
   SIZEOF_HEADERS_CODE=" + SIZEOF_HEADERS"
 else
@@ -326,7 +347,7 @@ else
 fi
 
 cat <<EOF
-/* Copyright (C) 2014-2015 Free Software Foundation, Inc.
+/* Copyright (C) 2014-2018 Free Software Foundation, Inc.
 
    Copying and distribution of this script, with or without modification,
    are permitted in any medium without royalty provided the copyright
@@ -338,7 +359,7 @@ OUTPUT_ARCH(${OUTPUT_ARCH})
 ${RELOCATING+ENTRY(${ENTRY})}
 
 ${RELOCATING+${LIB_SEARCH_DIRS}}
-${RELOCATING+${EXECUTABLE_SYMBOLS}}
+${RELOCATING+${CREATE_SHLIB-${EXECUTABLE_SYMBOLS}}}
 ${RELOCATING+${INPUT_FILES}}
 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
   if gld -r is used and the intermediate file has sections starting
@@ -426,13 +447,13 @@ cat >> ldscripts/dyntmp.$$ <<EOF
   .rel.dyn      ${RELOCATING-0} :
     {
 EOF
-sed -e '/^[    ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rela\./d;/__rela_iplt_/d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC >> ldscripts/dyntmp.$$
+sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rela\./d;/__rela_iplt_/d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC >> ldscripts/dyntmp.$$
 cat >> ldscripts/dyntmp.$$ <<EOF
     }
   .rela.dyn     ${RELOCATING-0} :
     {
 EOF
-sed -e '/^[    ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rel\./d;/__rel_iplt_/d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC >> ldscripts/dyntmp.$$
+sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rel\./d;/__rel_iplt_/d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC >> ldscripts/dyntmp.$$
 cat >> ldscripts/dyntmp.$$ <<EOF
     }
 EOF
@@ -462,10 +483,10 @@ emit_dyn()
     cat ldscripts/dyntmp.$$
   else
     if test -z "${NO_REL_RELOCS}"; then
-      sed -e '/^[      ]*\.rela\.[^}]*$/,/}/d;/^[      ]*\.rela\./d;/__rela_iplt_/d' ldscripts/dyntmp.$$
+      sed -e '/^[       ]*\.rela\.[^}]*$/,/}/d;/^[      ]*\.rela\./d;/__rela_iplt_/d' ldscripts/dyntmp.$$
     fi
     if test -z "${NO_RELA_RELOCS}"; then
-      sed -e '/^[      ]*\.rel\.[^}]*$/,/}/d;/^[       ]*\.rel\./d;/__rel_iplt_/d' ldscripts/dyntmp.$$
+      sed -e '/^[       ]*\.rel\.[^}]*$/,/}/d;/^[       ]*\.rel\./d;/__rel_iplt_/d' ldscripts/dyntmp.$$
     fi
   fi
   rm -f ldscripts/dyntmp.$$
@@ -474,14 +495,16 @@ emit_dyn()
 test -n "${NON_ALLOC_DYN}${SEPARATE_CODE}" || emit_dyn
 
 cat <<EOF
-  .init         ${RELOCATING-0} :
+  ${RELOCATING+${TEXT_SEGMENT_ALIGN}}
+
+  .init         ${RELOCATING-0}${RELOCATING+${INIT_ADDR}} :
   {
     ${RELOCATING+${INIT_START}}
     KEEP (*(SORT_NONE(.init)))
     ${RELOCATING+${INIT_END}}
   } ${FILL}
 
-  ${TEXT_PLT+${PLT_NEXT_DATA-${PLT}}}
+  ${TEXT_PLT+${PLT_NEXT_DATA-${PLT} ${OTHER_PLT_SECTIONS}}}
   ${TINY_READONLY_SECTION}
   .text         ${RELOCATING-0} :
   {
@@ -495,7 +518,7 @@ cat <<EOF
     *(.gnu.warning)
     ${RELOCATING+${OTHER_TEXT_SECTIONS}}
   } ${FILL}
-  .fini         ${RELOCATING-0} :
+  .fini         ${RELOCATING-0}${RELOCATING+${FINI_ADDR}} :
   {
     ${RELOCATING+${FINI_START}}
     KEEP (*(SORT_NONE(.fini)))
@@ -504,9 +527,10 @@ cat <<EOF
   ${RELOCATING+PROVIDE (__${ETEXT_NAME} = .);}
   ${RELOCATING+PROVIDE (_${ETEXT_NAME} = .);}
   ${RELOCATING+PROVIDE (${ETEXT_NAME} = .);}
+  ${RELOCATING+${TEXT_SEGMENT_ALIGN}}
 EOF
 
-if test -n "${SEPARATE_CODE}"; then
+if test -n "${SEPARATE_CODE}${SEPARATE_TEXT}"; then
   if test -n "${RODATA_ADDR}"; then
     RODATA_ADDR="\
 SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS"
@@ -518,8 +542,8 @@ SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS"
     SHLIB_RODATA_ADDR="\
 SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
   else
-    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
     SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
+    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
   fi
   cat <<EOF
   /* Adjust the address for the rodata segment.  We want to adjust up to
@@ -528,8 +552,10 @@ SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}}
   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}}
 EOF
-  emit_early_ro
-  emit_dyn
+  if test -n "${SEPARATE_CODE}"; then
+    emit_early_ro
+    emit_dyn
+  fi
 fi
 
 cat <<EOF
@@ -538,14 +564,16 @@ cat <<EOF
   ${CREATE_SHLIB-${SDATA2}}
   ${CREATE_SHLIB-${SBSS2}}
   ${OTHER_READONLY_SECTIONS}
-  .eh_frame_hdr : { *(.eh_frame_hdr) }
-  .eh_frame     ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
+  .gnu.build.attributes : { *(.gnu.build.attributes .gnu.build.attributes.*) }
+  .eh_frame_hdr : { *(.eh_frame_hdr) ${RELOCATING+*(.eh_frame_entry .eh_frame_entry.*)} }
+  .eh_frame     ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) ${RELOCATING+*(.eh_frame.*)} }
   .gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table
   .gcc_except_table.*) }
+  .gnu_extab ${RELOCATING-0} : ONLY_IF_RO { *(.gnu_extab*) }
   /* These sections are generated by the Sun/Oracle C++ compiler.  */
   .exception_ranges ${RELOCATING-0} : ONLY_IF_RO { *(.exception_ranges
   .exception_ranges*) }
-  ${TEXT_PLT+${PLT_NEXT_DATA+${PLT}}}
+  ${TEXT_PLT+${PLT_NEXT_DATA+${PLT} ${OTHER_PLT_SECTIONS}}}
 
   /* Adjust the address for the data segment.  We want to adjust up to
      the same address within the page on the next page up.  */
@@ -554,20 +582,20 @@ cat <<EOF
   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
 
   /* Exception handling  */
-  .eh_frame     ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.eh_frame)) }
+  .eh_frame     ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.eh_frame)) ${RELOCATING+*(.eh_frame.*)} }
+  .gnu_extab    ${RELOCATING-0} : ONLY_IF_RW { *(.gnu_extab) }
   .gcc_except_table ${RELOCATING-0} : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
   .exception_ranges ${RELOCATING-0} : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
 
   /* Thread Local Storage sections  */
-  .tdata       ${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }
+  .tdata       ${RELOCATING-0} :
+   {
+     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__tdata_start = .);}}
+     *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*})
+   }
   .tbss                ${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} }
 
-  .preinit_array   ${RELOCATING-0} :
-  {
-    ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_start = .);}}
-    KEEP (*(.preinit_array))
-    ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_end = .);}}
-  }
+  ${RELOCATING+${PREINIT_ARRAY}}
   ${RELOCATING+${INIT_ARRAY}}
   ${RELOCATING+${FINI_ARRAY}}
   ${SMALL_DATA_CTOR-${RELOCATING+${CTOR}}}
@@ -610,15 +638,15 @@ cat <<EOF
   ${SDATA_GOT+${OTHER_GOT_SECTIONS}}
   ${DATA_SDATA-${SDATA}}
   ${DATA_SDATA-${OTHER_SDATA_SECTIONS}}
-  ${RELOCATING+${DATA_END_SYMBOLS-${USER_LABEL_PREFIX}_edata = .; PROVIDE (${USER_LABEL_PREFIX}edata = .);}}
+  ${RELOCATING+${DATA_END_SYMBOLS-${CREATE_SHLIB+PROVIDE (}${USER_LABEL_PREFIX}_edata = .${CREATE_SHLIB+)}; PROVIDE (${USER_LABEL_PREFIX}edata = .);}}
   ${RELOCATING+. = .;}
-  ${RELOCATING+${USER_LABEL_PREFIX}__bss_start = .;}
+  ${RELOCATING+${CREATE_SHLIB+PROVIDE (}${USER_LABEL_PREFIX}__bss_start = .${CREATE_SHLIB+)};}
   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
   ${DATA_SDATA-${SBSS}}
   ${BSS_PLT+${PLT}}
   .${BSS_NAME}          ${RELOCATING-0} :
   {
-   *(.dyn${BSS_NAME})
+   ${RELOCATING+*(.dynbss)}
    *(.${BSS_NAME}${RELOCATING+ .${BSS_NAME}.* .gnu.linkonce.b.*})
    *(COMMON)
    /* Align here to ensure that the .bss section occupies space up to
@@ -637,7 +665,7 @@ EOF
 LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${LARGE_DATA_ADDR-.});"
 SHLIB_LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${SHLIB_LARGE_DATA_ADDR-.});"
 
-  cat <<EOF
+cat <<EOF
   ${RELOCATING+${CREATE_SHLIB-${CREATE_PIE-${LARGE_DATA_ADDR}}}}
   ${RELOCATING+${CREATE_SHLIB+${SHLIB_LARGE_DATA_ADDR}}}
   ${RELOCATING+${CREATE_PIE+${SHLIB_LARGE_DATA_ADDR}}}
@@ -645,8 +673,11 @@ SHLIB_LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${SHLIB_LARGE_DATA_A
   ${LARGE_BSS_AFTER_BSS-${LARGE_BSS}}
   ${RELOCATING+. = ALIGN(${ALIGNMENT});}
   ${RELOCATING+${OTHER_END_SYMBOLS}}
-  ${RELOCATING+${END_SYMBOLS-${USER_LABEL_PREFIX}_end = .; PROVIDE (${USER_LABEL_PREFIX}end = .);}}
+  ${RELOCATING+${END_SYMBOLS-${CREATE_SHLIB+PROVIDE (}${USER_LABEL_PREFIX}_end = .${CREATE_SHLIB+)}; PROVIDE (${USER_LABEL_PREFIX}end = .);}}
   ${RELOCATING+${DATA_SEGMENT_END}}
+  ${TINY_DATA_SECTION}
+  ${TINY_BSS_SECTION}
+  ${STACK_ADDR+${STACK}}
 EOF
 
 test -z "${NON_ALLOC_DYN}" || emit_dyn
@@ -667,11 +698,6 @@ EOF
 . $srcdir/scripttempl/DWARF.sc
 
 cat <<EOF
-
-  ${TINY_DATA_SECTION}
-  ${TINY_BSS_SECTION}
-
-  ${STACK_ADDR+${STACK}}
   ${ATTRS_SECTIONS}
   ${OTHER_SECTIONS}
   ${RELOCATING+${OTHER_SYMBOLS}}