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Apparently some linkers will just throw caution to the wind and

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decide to stick stuff we don't explicitly mention at 0,
no matter what else has already explicitly been located there.
A debian/ubuntu builder noted:

gcc -O0 -g3 -fpic -Wall -fshort-wchar -fno-strict-aliasing \
	-fno-merge-constants -ffreestanding -fno-stack-protector \
	-fno-stack-check --std=c11 -DCONFIG_aarch64 -D__KERNEL__ \
	-I/usr/include/efi/ -I/usr/include/efi/aarch64/ \
	-iquote/«PKGBUILDDIR»/include "-DDEBUGDIR=L\"/\"" \
	-ffreestanding -I/usr/lib/gcc/aarch64-linux-gnu/4.9/include \
	-c -o fakeesrt2.o fakeesrt2.c
ld -nostdlib --warn-common --no-undefined --fatal-warnings -shared \
	-Bsymbolic -L/usr/lib -L/usr/lib --build-id=sha1 \
	/usr/lib/crt0-efi-aarch64.o --defsym=EFI_SUBSYSTEM=0xa \
	-o fakeesrt2.so fakeesrt2.o -lefi -lgnuefi \
	/usr/lib/gcc/aarch64-linux-gnu/4.9/libgcc.a \
	-T elf_aarch64_efi.lds
ld: section .note.gnu.build-id loaded at [00000000,00000023] overlaps section .text loaded at [00000000,0000668f]

This shouldn't be a problem if we explicitly tell it where to put them.

Ard added a patch to do this on Arm and aarch64 targets in 16409cad4cb,
but it needs to be everywhere.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Nigel Croxon <nigel.croxon@hpe.com>
This commit is contained in:
Nigel Croxon 2016-02-25 09:36:53 -05:00
parent 06db4a2b53
commit d39106b3e4
7 changed files with 12 additions and 0 deletions
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1
gnuefi/elf_aarch64_efi.lds
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@ -38,6 +38,7 @@ SECTIONS
. = ALIGN(16);
_bss_end = .;
}
.rela.dyn : { *(.rela.dyn) }
.rela.plt : { *(.rela.plt) }
.rela.got : { *(.rela.got) }

1
gnuefi/elf_arm_efi.lds
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@ -39,6 +39,7 @@ SECTIONS
. = ALIGN(16);
_bss_end = .;
}
.rel.dyn : { *(.rel.dyn) }
.rel.plt : { *(.rel.plt) }
.rel.got : { *(.rel.got) }

2
gnuefi/elf_ia32_efi.lds
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@ -46,6 +46,8 @@ SECTIONS
*(.bss)
*(COMMON)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);

2
gnuefi/elf_ia32_fbsd_efi.lds
View File

@ -46,6 +46,8 @@ SECTIONS
*(.bss)
*(COMMON)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);

2
gnuefi/elf_ia64_efi.lds
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@ -43,6 +43,8 @@ SECTIONS
*(.bss)
*(COMMON)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);

2
gnuefi/elf_x86_64_efi.lds
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@ -46,6 +46,8 @@ SECTIONS
*(COMMON)
*(.rel.local)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
_edata = .;
_data_size = . - _etext;
. = ALIGN(4096);

2
gnuefi/elf_x86_64_fbsd_efi.lds
View File

@ -43,6 +43,8 @@ SECTIONS
*(COMMON)
*(.rel.local)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);