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ld -r script fixes

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For ld -r, we generally set the VMA of sections to zero.  This is done
to make the output of ld -r most similar to that output by the
assembler, which generally has sections starting at VMA zero.  In some
cases that covers for backend bugs which would mis-handle relocatable
object files with non-zero section VMAs.

This patch fixes a few sections that didn't have zero VMAs for ld -r.
A missing zero on .note.gnu.build-id and .eh_frame_hdr doesn't matter
much since these are linker generated symbols only output on final
link, but it's good to be consistent.

	* Makefile.am (ei386beos.c, ei386go32.c): Correct dependencies.
	* Makefile.in: Regenerate.
	* scripttempl/elf.sc (.note.gnu.build-id, .eh_frame_hdr): Set
	address with ${RELOCATING-0}.
	* scripttempl/arclinux.sc: Likewise.
	* scripttempl/armbpabi.sc: Likewise.
	* scripttempl/avr.sc: Likewise.
	* scripttempl/elf64hppa.sc: Likewise.
	* scripttempl/elf_chaos.sc: Likewise.
	* scripttempl/elfarc.sc: Likewise.
	* scripttempl/elfxtensa.sc: Likewise.
	* scripttempl/mep.sc: Likewise.
	* scripttempl/nds32elf.sc: Likewise.
	* scripttempl/pru.sc: Likewise.
	* scripttempl/elf32msp430.sc: Likewise, and for other sections.
	* scripttempl/epiphany_4x4.sc: Similarly.
This commit is contained in:
Alan Modra 2018-10-26 10:01:54 +10:30
parent 98a17ece01
commit c2e863866d
16 changed files with 58 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
ld/ChangeLog
View File

@ -1,3 +1,22 @@
2018-10-29 Alan Modra <amodra@gmail.com>
* Makefile.am (ei386beos.c, ei386go32.c): Correct dependencies.
* Makefile.in: Regenerate.
* scripttempl/elf.sc (.note.gnu.build-id, .eh_frame_hdr): Set
address with ${RELOCATING-0}.
* scripttempl/arclinux.sc: Likewise.
* scripttempl/armbpabi.sc: Likewise.
* scripttempl/avr.sc: Likewise.
* scripttempl/elf64hppa.sc: Likewise.
* scripttempl/elf_chaos.sc: Likewise.
* scripttempl/elfarc.sc: Likewise.
* scripttempl/elfxtensa.sc: Likewise.
* scripttempl/mep.sc: Likewise.
* scripttempl/nds32elf.sc: Likewise.
* scripttempl/pru.sc: Likewise.
* scripttempl/elf32msp430.sc: Likewise, and for other sections.
* scripttempl/epiphany_4x4.sc: Similarly.
2018-10-26 Christoph Conrads <christoph.conrads@fluent.ai>
* ld.texi (--gc-sections): Update.

6
ld/Makefile.am
View File

@ -1382,13 +1382,15 @@ ehppaobsd.c: $(srcdir)/emulparams/hppaobsd.sh \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
ei386beos.c: $(srcdir)/emulparams/i386beos.sh \
$(srcdir)/emultempl/beos.em $(srcdir)/scripttempl/i386beos.sc ${GEN_DEPENDS}
$(srcdir)/emultempl/beos.em $(srcdir)/scripttempl/i386beos.sc \
$(srcdir)/scripttempl/DWARF.sc ${GEN_DEPENDS}
ei386bsd.c: $(srcdir)/emulparams/i386bsd.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/aout.sc ${GEN_DEPENDS}
ei386go32.c: $(srcdir)/emulparams/i386go32.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/i386go32.sc ${GEN_DEPENDS}
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/i386go32.sc \
$(srcdir)/scripttempl/DWARF.sc ${GEN_DEPENDS}
ei386lynx.c: $(srcdir)/emulparams/i386lynx.sh \
$(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}

6
ld/Makefile.in
View File

@ -2986,13 +2986,15 @@ ehppaobsd.c: $(srcdir)/emulparams/hppaobsd.sh \
$(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
ei386beos.c: $(srcdir)/emulparams/i386beos.sh \
$(srcdir)/emultempl/beos.em $(srcdir)/scripttempl/i386beos.sc ${GEN_DEPENDS}
$(srcdir)/emultempl/beos.em $(srcdir)/scripttempl/i386beos.sc \
$(srcdir)/scripttempl/DWARF.sc ${GEN_DEPENDS}
ei386bsd.c: $(srcdir)/emulparams/i386bsd.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/aout.sc ${GEN_DEPENDS}
ei386go32.c: $(srcdir)/emulparams/i386go32.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/i386go32.sc ${GEN_DEPENDS}
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/i386go32.sc \
$(srcdir)/scripttempl/DWARF.sc ${GEN_DEPENDS}
ei386lynx.c: $(srcdir)/emulparams/i386lynx.sh \
$(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}

4
ld/scripttempl/arclinux.sc
View File

@ -358,7 +358,7 @@ emit_early_ro()
{
cat <<EOF
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
}
@ -539,7 +539,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) ${RELOCATING+*(.eh_frame_entry .eh_frame_entry.*)} }
.eh_frame_hdr ${RELOCATING-0} : { *(.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 ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }
.gnu_extab ${RELOCATING-0} : ONLY_IF_RO { *(.gnu_extab*) }

2
ld/scripttempl/armbpabi.sc
View File

@ -254,7 +254,7 @@ cat <<EOF
${RELOCATING+${FINI_ARRAY}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.gcc_except_table${RELOCATING+ .gcc_except_table.*})) }

2
ld/scripttempl/avr.sc
View File

@ -336,7 +336,7 @@ cat <<EOF
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0} : { *(.note.gnu.build-id) }
EOF
. $srcdir/scripttempl/DWARF.sc

4
ld/scripttempl/elf.sc
View File

@ -378,7 +378,7 @@ emit_early_ro()
{
cat <<EOF
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
}
@ -564,7 +564,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr)${RELOCATING+ *(.eh_frame_entry .eh_frame_entry.*)} }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr)${RELOCATING+ *(.eh_frame_entry .eh_frame_entry.*)} }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame))${RELOCATING+ *(.eh_frame.*)} }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }
.gnu_extab ${RELOCATING-0} : ONLY_IF_RO { *(.gnu_extab*) }

12
ld/scripttempl/elf32msp430.sc
View File

@ -137,7 +137,7 @@ SECTIONS
.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
/* Internal text space. */
.text :
.text ${RELOCATING-0} :
{
${RELOCATING+. = ALIGN(2);
*(SORT_NONE(.init))
@ -187,7 +187,7 @@ SECTIONS
_etext = .;}
} ${RELOCATING+ > text}
.rodata :
.rodata ${RELOCATING-0} :
{
${RELOCATING+. = ALIGN(2);
*(.lower.rodata.* .lower.rodata)
@ -239,7 +239,7 @@ SECTIONS
KEEP (*(.dtors))}
} ${RELOCATING+ > text}
.vectors ${RELOCATING-0}:
.vectors ${RELOCATING-0} :
{
${RELOCATING+ PROVIDE (__vectors_start = .) ; }
*(.vectors${RELOCATING+*})
@ -277,7 +277,7 @@ SECTIONS
${RELOCATING+__romdatastart = LOADADDR(.data);
__romdatacopysize = SIZEOF(.data);}
.bss ${RELOCATING+ SIZEOF(.data) + ADDR(.data)} :
.bss ${RELOCATING-0}${RELOCATING+SIZEOF(.data) + ADDR(.data)} :
{
${RELOCATING+. = ALIGN(2);}
${RELOCATING+ PROVIDE (__bss_start = .); }
@ -291,14 +291,14 @@ SECTIONS
} ${RELOCATING+ > data}
${RELOCATING+ PROVIDE (__bsssize = SIZEOF(.bss)); }
.noinit ${RELOCATING+ SIZEOF(.bss) + ADDR(.bss)} :
.noinit ${RELOCATING-0}${RELOCATING+SIZEOF(.bss) + ADDR(.bss)} :
{
${RELOCATING+ PROVIDE (__noinit_start = .) ; }
*(.noinit)
${RELOCATING+ PROVIDE (__noinit_end = .) ; }
} ${RELOCATING+ > data}
.persistent ${RELOCATING+ SIZEOF(.noinit) + ADDR(.noinit)} :
.persistent ${RELOCATING-0}${RELOCATING+SIZEOF(.noinit) + ADDR(.noinit)} :
{
${RELOCATING+ PROVIDE (__persistent_start = .) ; }
*(.persistent)

4
ld/scripttempl/elf64hppa.sc
View File

@ -299,7 +299,7 @@ SECTIONS
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
test -n "${RELOCATING+0}" || unset NON_ALLOC_DYN
@ -431,7 +431,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }

2
ld/scripttempl/elf_chaos.sc
View File

@ -264,7 +264,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
${RELOCATING+. = ALIGN(0x1000);}
.data ${RELOCATING-0} :

2
ld/scripttempl/elfarc.sc
View File

@ -294,7 +294,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }
/* Adjust the address for the data segment. We want to adjust up to

4
ld/scripttempl/elfxtensa.sc
View File

@ -310,7 +310,7 @@ SECTIONS
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
test -n "${RELOCATING+0}" || unset NON_ALLOC_DYN
@ -440,7 +440,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }

16
ld/scripttempl/epiphany_4x4.sc
View File

@ -375,7 +375,7 @@ cat <<EOF
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
test -n "${RELOCATING+0}" || unset NON_ALLOC_DYN
@ -469,7 +469,7 @@ fi
cat <<EOF
.init ${RELOCATING+__init_start} :
.init ${RELOCATING-0}${RELOCATING+__init_start} :
{
${RELOCATING+${INIT_START}}
KEEP (*(.init))
@ -479,14 +479,14 @@ cat <<EOF
${TEXT_PLT+${PLT}}
${TINY_READONLY_SECTION}
.fini ${RELOCATING+ADDR(.init)+SIZEOF(.init)} ${RELOCATING-0} :
.fini ${RELOCATING-0}${RELOCATING+ADDR(.init)+SIZEOF(.init)} :
{
${RELOCATING+${FINI_START}}
KEEP (*(.fini))
${RELOCATING+${FINI_END}}
} /* ${RELOCATING+ > INTERNAL_RAM} */ =${NOP-0}
.text ${RELOCATING+ADDR(.fini)+SIZEOF(.fini)} ${RELOCATING-0} :
.text ${RELOCATING-0}${RELOCATING+ADDR(.fini)+SIZEOF(.fini)} :
{
${RELOCATING+${TEXT_START_SYMBOLS}}
*(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
@ -503,7 +503,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }
@ -557,7 +557,7 @@ cat <<EOF
${DATA_PLT+${PLT_BEFORE_GOT-${PLT}}}
.data ${RELOCATING+ADDR(.dtors)+SIZEOF(.dtors)} ${RELOCATING-0} :
.data ${RELOCATING-0}${RELOCATING+ADDR(.dtors)+SIZEOF(.dtors)} :
{
${RELOCATING+${DATA_START_SYMBOLS}}
*(.data${RELOCATING+ .data.* .gnu.linkonce.d.*})
@ -583,7 +583,7 @@ cat <<EOF
${RELOCATING+${OTHER_BSS_SYMBOLS}}
${SBSS}
${BSS_PLT+${PLT}}
.bss ${RELOCATING+ADDR(.rodata)+SIZEOF(.rodata)} ${RELOCATING-0} :
.bss ${RELOCATING-0}${RELOCATING+ADDR(.rodata)+SIZEOF(.rodata)} :
{
${RELOCATING+*(.dynbss)}
*(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
@ -606,7 +606,7 @@ cat <<EOF
${RELOCATING+${DATA_SEGMENT_END}}
${RELOCATING+PROVIDE ( __stack_start_ = ORIGIN(EXTERNAL_DRAM_0) + __PROG_SIZE_FOR_CORE__ * __CORE_NUM_ + __PROG_SIZE_FOR_CORE__ - 0x10) ;}
.stack ${RELOCATING+__stack_start_} : { ${RELOCATING+___stack = .;} *(.stack) }
.stack ${RELOCATING-0}${RELOCATING+__stack_start_} : { ${RELOCATING+___stack = .;} *(.stack) }
${RELOCATING+PROVIDE ( ___heap_start = ORIGIN(EXTERNAL_DRAM_1) + __HEAP_SIZE_FOR_CORE__ * __CORE_NUM_ );}
${RELOCATING+PROVIDE ( ___heap_end = ORIGIN(EXTERNAL_DRAM_1) + __HEAP_SIZE_FOR_CORE__ * __CORE_NUM_ + __HEAP_SIZE_FOR_CORE__ - 4 );}

2
ld/scripttempl/mep.sc
View File

@ -329,7 +329,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.gcc_except_table${RELOCATING+ .gcc_except_table.*})) }

4
ld/scripttempl/nds32elf.sc
View File

@ -305,7 +305,7 @@ emit_early_ro()
{
cat <<EOF
${INITIAL_READONLY_SECTIONS}
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }
EOF
}
@ -486,7 +486,7 @@ cat <<EOF
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${OTHER_READONLY_SECTIONS}
.eh_frame_hdr : { *(.eh_frame_hdr) }
.eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }
.eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }
/* These sections are generated by the Sun/Oracle C++ compiler. */

4
ld/scripttempl/pru.sc
View File

@ -164,7 +164,7 @@ SECTIONS
} ${RELOCATING+ > dmem}
/* Global data not cleared after reset. */
.noinit ${RELOCATING-0}:
.noinit ${RELOCATING-0} :
{
${RELOCATING+ PROVIDE (_noinit_start = .) ; }
*(.noinit)
@ -185,7 +185,7 @@ SECTIONS
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.note.gnu.build-id : { *(.note.gnu.build-id) }
.note.gnu.build-id ${RELOCATING-0} : { *(.note.gnu.build-id) }
EOF
. $srcdir/scripttempl/DWARF.sc