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Apparently some linkers will just throw caution to the wind and 

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
View File

@ -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
View File

@ -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
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_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
View File

@ -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
View File

@ -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);