* Makefile.in (earmsymbian.c): Depend on armbpabi.sc, not elf.sc.

	* ldexp.h (segment_type): New type.
	(segments): New variable.
	* ldexp.c (segments): New variable.
	(exp_print_token): Handle SEGMENT_START.
	(fold_binary): Likewise.
	* ldgram.y (SEGMENT_START): Declare it as a token.
	(exp): Handle SEGMENT_START.
	* ldlang.h (lang_address_statement_type): Add segment field.
	(lang_section_start): Change prototype.
	* ldlang.c (map_input_to_output_sections): Do not process section
	assignments if a corresponding SEGMENT_START has already been
	seen.
	(lang_section_start): Add segment parameter.
	* ldlex.l (SEGMENT_START): Add it.
	* lexsup.c (seg_segment_start): New function.
	(parse_args): Use it for -Tbss, -Tdata, and -Ttext.
	* ld.texinfo (SEGMENT_START): Document it.
	* emulparams/armsymbian.sh (EMBEDDED): Set it.
	* scripttempl/armbpabi.sc: Use SEGMENT_START to control segment
	base addresses.  Do not map relocations.
	* NEWS: Mention SEGMENT_START.

1 files changed, 73 insertions, 132 deletions

diff --git a/ld/scripttempl/armbpabi.sc b/ld/scripttempl/armbpabi.sc
index 6904ca9..33fae97 100644
--- a/ld/scripttempl/armbpabi.sc
+++ b/ld/scripttempl/armbpabi.sc
@@ -1,78 +1,7 @@
 # This variant of elf.sc is used for ARM BPABI platforms, like Symbian
 # OS, where a separate postlinker will operated on the generated
-# executable or shared object.
-
-#
-# Unusual variables checked by this code:
-#	NOP - four byte opcode for no-op (defaults to 0)
-#	NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not
-#		empty.
-#	DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
-#	INITIAL_READONLY_SECTIONS - at start of text segment
-#	OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
-#		(e.g., .PARISC.milli)
-#	OTHER_TEXT_SECTIONS - these get put in .text when relocating
-#	OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
-#		(e.g., .PARISC.global)
-#	OTHER_RELRO_SECTIONS - other than .data.rel.ro ...
-#		(e.g. PPC32 .fixup, .got[12])
-#	OTHER_BSS_SECTIONS - other than .bss .sbss ...
-#	OTHER_SECTIONS - at the end
-#	EXECUTABLE_SYMBOLS - symbols that must be defined for an
-#		executable (e.g., _DYNAMIC_LINK)
-#	TEXT_START_SYMBOLS - symbols that appear at the start of the
-#		.text section.
-#	DATA_START_SYMBOLS - symbols that appear at the start of the
-#		.data section.
-#	OTHER_SDATA_SECTIONS - sections just after .sdata.
-#	OTHER_BSS_SYMBOLS - symbols that appear at the start of the
-#		.bss section besides __bss_start.
-#	DATA_PLT - .plt should be in data segment, not text segment.
-#	PLT_BEFORE_GOT - .plt just before .got when .plt is in data segement.
-#	BSS_PLT - .plt should be in bss segment
-#	TEXT_DYNAMIC - .dynamic in text segment, not data segment.
-#	EMBEDDED - whether this is for an embedded system. 
-#	SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set
-#		start address of shared library.
-#	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.
-#	FINI_START, FINI_END - statements just before and just after
-# 	combination of .fini sections.
-#	STACK_ADDR - start of a .stack section.
-#	OTHER_END_SYMBOLS - symbols to place right at the end of the script.
-#	SEPARATE_GOTPLT - if set, .got.plt should be separate output section,
-#		so that .got can be in the RELRO area.  It should be set to
-#		the number of bytes in the beginning of .got.plt which can be
-#		in the RELRO area as well.
-#
-# When adding sections, do note that the names of some sections are used
-# when specifying the start address of the next.
-#
-
-#  Many sections come in three flavours.  There is the 'real' section,
-#  like ".data".  Then there are the per-procedure or per-variable
-#  sections, generated by -ffunction-sections and -fdata-sections in GCC,
-#  and useful for --gc-sections, which for a variable "foo" might be
-#  ".data.foo".  Then there are the linkonce sections, for which the linker
-#  eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
-#  The exact correspondences are:
-#
-#  Section	Linkonce section
-#  .text	.gnu.linkonce.t.foo
-#  .rodata	.gnu.linkonce.r.foo
-#  .data	.gnu.linkonce.d.foo
-#  .bss		.gnu.linkonce.b.foo
-#  .sdata	.gnu.linkonce.s.foo
-#  .sbss	.gnu.linkonce.sb.foo
-#  .sdata2	.gnu.linkonce.s2.foo
-#  .sbss2	.gnu.linkonce.sb2.foo
-#  .debug_info	.gnu.linkonce.wi.foo
-#  .tdata	.gnu.linkonce.td.foo
-#  .tbss	.gnu.linkonce.tb.foo
-#
-#  Each of these can also have corresponding .rel.* and .rela.* sections.
+# executable or shared object.  See elf.sc for configuration variables
+# that apply; only BPABI-specific variables will be noted here.
 
 test -z "$ENTRY" && ENTRY=_start
 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
@@ -175,11 +104,18 @@ STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
     *(.stack)
   }"
 
+TEXT_START_ADDR="SEGMENT_START(\"text\", ${TEXT_START_ADDR})"
+SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text\", ${SHLIB_TEXT_START_ADDR:-0})"
+DATA_ADDR="SEGMENT_START(\"data\", ${DATA_ADDR-${DATA_SEGMENT_ALIGN}})"
+SHLIB_DATA_ADDR="SEGMENT_START(\"data\", ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}})"
+
 # if this is for an embedded system, don't add SIZEOF_HEADERS.
 if [ -z "$EMBEDDED" ]; then
    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
+   SHLIB_BASE_ADDRESS="${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS"
 else
    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
+   SHLIB_BASE_ADDRESS="${SHLIB_TEXT_START_ADDR}"
 fi
 
 cat <<EOF
@@ -202,66 +138,12 @@ SECTIONS
 {
   /* Read-only sections, merged into text segment: */
   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR}); . = ${TEXT_BASE_ADDRESS};}}}
-  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
-  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
+  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_BASE_ADDRESS};}}
+  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_BASE_ADDRESS};}}
   ${INITIAL_READONLY_SECTIONS}
 
 EOF
-if [ "x$COMBRELOC" = x ]; then
-  COMBRELOCCAT=cat
-else
-  COMBRELOCCAT="cat > $COMBRELOC"
-fi
-eval $COMBRELOCCAT <<EOF
-  .rel.init     ${RELOCATING-0} : { *(.rel.init) }
-  .rela.init    ${RELOCATING-0} : { *(.rela.init) }
-  .rel.text     ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
-  .rela.text    ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
-  .rel.fini     ${RELOCATING-0} : { *(.rel.fini) }
-  .rela.fini    ${RELOCATING-0} : { *(.rela.fini) }
-  .rel.rodata   ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
-  .rela.rodata  ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
-  ${OTHER_READONLY_RELOC_SECTIONS}
-  .rel.data.rel.ro ${RELOCATING-0} : { *(.rel.data.rel.ro${RELOCATING+*}) }
-  .rela.data.rel.ro ${RELOCATING-0} : { *(.rel.data.rel.ro${RELOCATING+*}) }
-  .rel.data     ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
-  .rela.data    ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
-  .rel.tdata	${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
-  .rela.tdata	${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
-  .rel.tbss	${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
-  .rela.tbss	${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
-  .rel.ctors    ${RELOCATING-0} : { *(.rel.ctors) }
-  .rela.ctors   ${RELOCATING-0} : { *(.rela.ctors) }
-  .rel.dtors    ${RELOCATING-0} : { *(.rel.dtors) }
-  .rela.dtors   ${RELOCATING-0} : { *(.rela.dtors) }
-  ${REL_SDATA}
-  ${REL_SBSS}
-  ${REL_SDATA2}
-  ${REL_SBSS2}
-  .rel.bss      ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
-  .rela.bss     ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
-EOF
-if [ -n "$COMBRELOC" ]; then
-cat <<EOF
-  .rel.dyn      ${RELOCATING-0} :
-    {
-EOF
-sed -e '/^[ 	]*[{}][ 	]*$/d;/:[ 	]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC
-cat <<EOF
-    }
-  .rela.dyn     ${RELOCATING-0} :
-    {
-EOF
-sed -e '/^[ 	]*[{}][ 	]*$/d;/:[ 	]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC
 cat <<EOF
-    }
-EOF
-fi
-cat <<EOF
-  .rel.plt      ${RELOCATING-0} : { *(.rel.plt) }
-  .rela.plt     ${RELOCATING-0} : { *(.rela.plt) }
-  ${OTHER_PLT_RELOC_SECTIONS}
-
   .init         ${RELOCATING-0} : 
   { 
     ${RELOCATING+${INIT_START}}
@@ -299,9 +181,9 @@ cat <<EOF
 
   /* Adjust the address for the data segment.  We want to adjust up to
      the same address within the page on the next page up.  */
-  ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}}
-  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
-  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
+  ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR};}}}
+  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR};}}
+  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR};}}
 
   /* Exception handling  */
   .eh_frame     ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.eh_frame)) }
@@ -355,6 +237,7 @@ cat <<EOF
   ${OTHER_SDATA_SECTIONS}
   ${RELOCATING+_edata = .;}
   ${RELOCATING+PROVIDE (edata = .);}
+  ${RELOCATING+. = DEFINED(__bss_segment_start) ? __bss_segment_start : .;}
   ${RELOCATING+__bss_start = .;}
   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
   ${SBSS}
@@ -431,5 +314,63 @@ cat <<EOF
   ${OTHER_SECTIONS}
   ${RELOCATING+${OTHER_END_SYMBOLS}}
   ${RELOCATING+${STACKNOTE}}
+EOF
+
+# These relocations sections are part of the read-only segment in SVR4
+# executables, but are not mapped in BPABI executables.
+if [ "x$COMBRELOC" = x ]; then
+  COMBRELOCCAT=cat
+else
+  COMBRELOCCAT="cat > $COMBRELOC"
+fi
+eval $COMBRELOCCAT <<EOF
+  .rel.init     0 : { *(.rel.init) }
+  .rela.init    0 : { *(.rela.init) }
+  .rel.text     0 : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
+  .rela.text    0 : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
+  .rel.fini     0 : { *(.rel.fini) }
+  .rela.fini    0 : { *(.rela.fini) }
+  .rel.rodata   0 : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
+  .rela.rodata  0 : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
+  ${OTHER_READONLY_RELOC_SECTIONS}
+  .rel.data.rel.ro 0 : { *(.rel.data.rel.ro${RELOCATING+*}) }
+  .rela.data.rel.ro 0 : { *(.rel.data.rel.ro${RELOCATING+*}) }
+  .rel.data     0 : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
+  .rela.data    0 : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
+  .rel.tdata	0 : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
+  .rela.tdata	0 : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
+  .rel.tbss	0 : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
+  .rela.tbss	0 : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
+  .rel.ctors    0 : { *(.rel.ctors) }
+  .rela.ctors   0 : { *(.rela.ctors) }
+  .rel.dtors    0 : { *(.rel.dtors) }
+  .rela.dtors   0 : { *(.rela.dtors) }
+  ${REL_SDATA}
+  ${REL_SBSS}
+  ${REL_SDATA2}
+  ${REL_SBSS2}
+  .rel.bss      0 : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
+  .rela.bss     0 : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
+EOF
+if [ -n "$COMBRELOC" ]; then
+cat <<EOF
+  .rel.dyn      0 :
+    {
+EOF
+sed -e '/^[ 	]*[{}][ 	]*$/d;/:[ 	]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC
+cat <<EOF
+    }
+  .rela.dyn     0 :
+    {
+EOF
+sed -e '/^[ 	]*[{}][ 	]*$/d;/:[ 	]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC
+cat <<EOF
+    }
+EOF
+fi
+cat <<EOF
+  .rel.plt      0 : { *(.rel.plt) }
+  .rela.plt     0 : { *(.rela.plt) }
+  ${OTHER_PLT_RELOC_SECTIONS}
 }
 EOF