* [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64)
@ 2024-01-01 11:53 Sergey Bugaev
2024-01-05 15:35 ` Nick Clifton
0 siblings, 1 reply; 4+ messages in thread
From: Sergey Bugaev @ 2024-01-01 11:53 UTC (permalink / raw)
To: binutils, bug-hurd
Also recognized are aarch64-*-gnu tagrets, e.g. aarch64-pc-gnu or
aarch64-unknown-gnu.
The ld/emulparams/aarch64gnu.sh file is (for now) identical to aarch64fbsd.sh,
or to aarch64linux.sh with Linux-specific logic removed; and mainly different
from the generic aarch64elf.sh in that it does not set EMBEDDED=yes.
Coupled with a corresponding GCC patch, this produces a toolchain that can
sucessfully build working binaries targeting aarch64-gnu.
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---
bfd/config.bfd | 2 +-
gas/configure.tgt | 1 +
ld/configure.tgt | 5 +++++
ld/emulparams/aarch64gnu.sh | 37 +++++++++++++++++++++++++++++++++++++
4 files changed, 44 insertions(+), 1 deletion(-)
create mode 100644 ld/emulparams/aarch64gnu.sh
diff --git a/bfd/config.bfd b/bfd/config.bfd
index 4106924e..9f3d4d46 100644
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -284,7 +284,7 @@ case "${targ}" in
targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec"
want64=true
;;
- aarch64-*-linux* | aarch64-*-netbsd* | aarch64-*-nto*)
+ aarch64-*-linux* | aarch64-*-netbsd* | aarch64-*-nto* | aarch64-*-gnu*)
targ_defvec=aarch64_elf64_le_vec
targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec aarch64_pei_le_vec aarch64_pe_le_vec"
want64=true
diff --git a/gas/configure.tgt b/gas/configure.tgt
index 3a582ef4..15c1ed3d 100644
--- a/gas/configure.tgt
+++ b/gas/configure.tgt
@@ -134,6 +134,7 @@ case ${generic_target} in
case ${cpu}-${os} in
aarch64*-linux-gnu_ilp32) arch=aarch64:32 ;;
esac ;;
+ aarch64*-*-gnu*) fmt=elf em=gnu ;;
aarch64*-*-netbsd*) fmt=elf em=nbsd;;
aarch64*-*-nto*) fmt=elf;;
aarch64*-*-openbsd*) fmt=elf;;
diff --git a/ld/configure.tgt b/ld/configure.tgt
index afd43032..211a2dee 100644
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -116,6 +116,11 @@ aarch64-*-linux*) targ_emul=aarch64linux
targ_extra_libpath="aarch64linuxb aarch64linux32 aarch64linux32b armelfb_linux_eabi armelf_linux_eabi"
targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb $targ_extra_libpath"
;;
+# This has to come after aarch64-*-linux* for aarch64-*-linux-gnu to hit the Linux branch.
+aarch64-*-gnu*)
+ targ_emul=aarch64gnu
+ targ_extra_emuls="aarch64elf aarch64elfb armelf armelfb"
+ ;;
aarch64-*-haiku*) targ_emul=aarch64haiku
targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb armelf_haiku $targ_extra_libpath"
;;
diff --git a/ld/emulparams/aarch64gnu.sh b/ld/emulparams/aarch64gnu.sh
new file mode 100644
index 00000000..0bcab7a4
--- /dev/null
+++ b/ld/emulparams/aarch64gnu.sh
@@ -0,0 +1,37 @@
+ARCH=aarch64
+MACHINE=
+NOP=0x1f2003d5
+
+SCRIPT_NAME=elf
+ELFSIZE=64
+OUTPUT_FORMAT="elf64-littleaarch64"
+BIG_OUTPUT_FORMAT="elf64-bigaarch64"
+LITTLE_OUTPUT_FORMAT="elf64-littleaarch64"
+NO_REL_RELOCS=yes
+
+TEMPLATE_NAME=elf
+EXTRA_EM_FILE=aarch64elf
+
+GENERATE_SHLIB_SCRIPT=yes
+GENERATE_PIE_SCRIPT=yes
+
+MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
+COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
+SEPARATE_GOTPLT=24
+IREL_IN_PLT=
+
+TEXT_START_ADDR=0x400000
+
+DATA_START_SYMBOLS='PROVIDE (__data_start = .);';
+
+# AArch64 does not support .s* sections.
+NO_SMALL_DATA=yes
+
+OTHER_BSS_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__bss_start__ = .${CREATE_SHLIB+)};"
+OTHER_BSS_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_bss_end__ = .${CREATE_SHLIB+)}; ${CREATE_SHLIB+PROVIDE (}__bss_end__ = .${CREATE_SHLIB+)};"
+OTHER_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__end__ = .${CREATE_SHLIB+)};"
+
+OTHER_SECTIONS='.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }'
+ATTRS_SECTIONS='.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }'
+# Ensure each PLT entry is aligned to a cache line.
+PLT=".plt ${RELOCATING-0} : ALIGN(16) { *(.plt)${RELOCATING+${IREL_IN_PLT+ *(.iplt)}} }"
--
2.43.0
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64)
2024-01-01 11:53 [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64) Sergey Bugaev
@ 2024-01-05 15:35 ` Nick Clifton
2024-01-05 22:45 ` Samuel Thibault
0 siblings, 1 reply; 4+ messages in thread
From: Nick Clifton @ 2024-01-05 15:35 UTC (permalink / raw)
To: Sergey Bugaev, binutils, bug-hurd
Hi Sergey,
> Also recognized are aarch64-*-gnu tagrets, e.g. aarch64-pc-gnu or
> aarch64-unknown-gnu.
>
> The ld/emulparams/aarch64gnu.sh file is (for now) identical to aarch64fbsd.sh,
> or to aarch64linux.sh with Linux-specific logic removed; and mainly different
> from the generic aarch64elf.sh in that it does not set EMBEDDED=yes.
>
> Coupled with a corresponding GCC patch, this produces a toolchain that can
> sucessfully build working binaries targeting aarch64-gnu.
Approved - please apply.
Cheers
Nick
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64)
2024-01-05 15:35 ` Nick Clifton
@ 2024-01-05 22:45 ` Samuel Thibault
2024-01-08 9:52 ` Nick Clifton
0 siblings, 1 reply; 4+ messages in thread
From: Samuel Thibault @ 2024-01-05 22:45 UTC (permalink / raw)
To: Nick Clifton; +Cc: Sergey Bugaev, binutils, bug-hurd
Hello,
Nick Clifton, le ven. 05 janv. 2024 15:35:24 +0000, a ecrit:
> Hi Sergey,
>
> > Also recognized are aarch64-*-gnu tagrets, e.g. aarch64-pc-gnu or
> > aarch64-unknown-gnu.
> >
> > The ld/emulparams/aarch64gnu.sh file is (for now) identical to aarch64fbsd.sh,
> > or to aarch64linux.sh with Linux-specific logic removed; and mainly different
> > from the generic aarch64elf.sh in that it does not set EMBEDDED=yes.
> >
> > Coupled with a corresponding GCC patch, this produces a toolchain that can
> > sucessfully build working binaries targeting aarch64-gnu.
> Approved - please apply.
We don't have commit access, please commit it, thanks ;)
Samuel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64)
2024-01-05 22:45 ` Samuel Thibault
@ 2024-01-08 9:52 ` Nick Clifton
0 siblings, 0 replies; 4+ messages in thread
From: Nick Clifton @ 2024-01-08 9:52 UTC (permalink / raw)
To: Sergey Bugaev, binutils, bug-hurd
Hi Samuel,
>> Approved - please apply.
>
> We don't have commit access, please commit it, thanks ;)
Done. :-)
Cheers
Nick
^ permalink raw reply [flat|nested] 4+ messages in thread
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2024-01-01 11:53 [PATCH binutils] Add support for the aarch64-gnu target (GNU/Hurd on AArch64) Sergey Bugaev
2024-01-05 15:35 ` Nick Clifton
2024-01-05 22:45 ` Samuel Thibault
2024-01-08 9:52 ` Nick Clifton
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