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b75ce33f0c
This patch adds support for Guarded Control Stack in AArch64 linker.
This patch implements the following:
1) Defines GNU_PROPERTY_AARCH64_FEATURE_1_GCS bit for GCS in
GNU_PROPERTY_AARCH64_FEATURE_1_AND macro.
2) Adds readelf support to read and print the GCS feature in GNU
properties in AArch64.
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
Properties: AArch64 feature: GCS
3) Adds support for the "-z gcs" linker option and document all the values
allowed with this option (-z gcs[=always|never|implicit]) where "-z gcs" is
equivalent to "-z gcs=always". When '-z gcs' option is omitted from the
command line, it defaults to "implicit" and relies on the GCS feature
marking in GNU properties.
4) Adds support for the "-z gcs-report" linker option and document all the
values allowed with this option (-z gcs-report[=none|warning|error]) where
"-z gcs-report" is equivalent to "-z gcs-report=warning". When this option
is omitted from the command line, it defaults to "warning".
The ABI changes adding GNU_PROPERTY_AARCH64_FEATURE_1_GCS to the GNU
property GNU_PROPERTY_AARCH64_FEATURE_1_AND is merged into main and
can be found in [1].
[1] https://github.com/ARM-software/abi-aa/blob/main/sysvabi64/sysvabi64.rst
Co-authored-by: Matthieu Longo <matthieu.longo@arm.com>
Co-authored-by: Yury Khrustalev <yury.khrustalev@arm.com>
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| .. | ||
| doc | ||
| hosts | ||
| po | ||
| .gitignore | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| aix5ppc-core.c | ||
| aout32.c | ||
| aout64.c | ||
| aout-cris.c | ||
| aout-ns32k.c | ||
| aout-target.h | ||
| aoutx.h | ||
| arc-got.h | ||
| arc-plt.def | ||
| arc-plt.h | ||
| archive64.c | ||
| archive.c | ||
| archures.c | ||
| ax_tls.m4 | ||
| bfd-in2.h | ||
| bfd-in.h | ||
| bfd.c | ||
| bfd.m4 | ||
| bfdio.c | ||
| binary.c | ||
| bpf-reloc.def | ||
| cache.c | ||
| cf-i386lynx.c | ||
| ChangeLog | ||
| ChangeLog-0001 | ||
| ChangeLog-0203 | ||
| ChangeLog-2004 | ||
| ChangeLog-2005 | ||
| ChangeLog-2006 | ||
| ChangeLog-2007 | ||
| ChangeLog-2008 | ||
| ChangeLog-2009 | ||
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| ChangeLog-2011 | ||
| ChangeLog-2012 | ||
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| ChangeLog-2014 | ||
| ChangeLog-2015 | ||
| ChangeLog-2016 | ||
| ChangeLog-2017 | ||
| ChangeLog-2018 | ||
| ChangeLog-2019 | ||
| ChangeLog-2020 | ||
| ChangeLog-9193 | ||
| ChangeLog-9495 | ||
| ChangeLog-9697 | ||
| ChangeLog-9899 | ||
| cisco-core.c | ||
| coff64-rs6000.c | ||
| coff-aarch64.c | ||
| coff-alpha.c | ||
| coff-arm.c | ||
| coff-arm.h | ||
| coff-bfd.c | ||
| coff-bfd.h | ||
| coff-go32.c | ||
| coff-i386.c | ||
| coff-ia64.c | ||
| coff-loongarch64.c | ||
| coff-mcore.c | ||
| coff-mips.c | ||
| coff-riscv64.c | ||
| coff-rs6000.c | ||
| coff-sh.c | ||
| coff-stgo32.c | ||
| coff-tic4x.c | ||
| coff-tic30.c | ||
| coff-tic54x.c | ||
| coff-x86_64.c | ||
| coff-z8k.c | ||
| coff-z80.c | ||
| coffcode.h | ||
| coffgen.c | ||
| cofflink.c | ||
| coffswap.h | ||
| compress.c | ||
| config.bfd | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| configure.com | ||
| configure.host | ||
| COPYING | ||
| corefile.c | ||
| cpu-aarch64.c | ||
| cpu-aarch64.h | ||
| cpu-alpha.c | ||
| cpu-amdgcn.c | ||
| cpu-arc.c | ||
| cpu-arm.c | ||
| cpu-arm.h | ||
| cpu-avr.c | ||
| cpu-bfin.c | ||
| cpu-bpf.c | ||
| cpu-cr16.c | ||
| cpu-cris.c | ||
| cpu-crx.c | ||
| cpu-csky.c | ||
| cpu-d10v.c | ||
| cpu-d30v.c | ||
| cpu-dlx.c | ||
| cpu-epiphany.c | ||
| cpu-fr30.c | ||
| cpu-frv.c | ||
| cpu-ft32.c | ||
| cpu-h8300.c | ||
| cpu-h8300.h | ||
| cpu-hppa.c | ||
| cpu-i386.c | ||
| cpu-ia64-opc.c | ||
| cpu-ia64.c | ||
| cpu-iamcu.c | ||
| cpu-ip2k.c | ||
| cpu-iq2000.c | ||
| cpu-kvx.c | ||
| cpu-lm32.c | ||
| cpu-loongarch.c | ||
| cpu-m9s12x.c | ||
| cpu-m9s12xg.c | ||
| cpu-m32c.c | ||
| cpu-m32r.c | ||
| cpu-m68hc11.c | ||
| cpu-m68hc12.c | ||
| cpu-m68k.c | ||
| cpu-m68k.h | ||
| cpu-m10200.c | ||
| cpu-m10300.c | ||
| cpu-mcore.c | ||
| cpu-mep.c | ||
| cpu-metag.c | ||
| cpu-microblaze.c | ||
| cpu-mips.c | ||
| cpu-mmix.c | ||
| cpu-moxie.c | ||
| cpu-msp430.c | ||
| cpu-mt.c | ||
| cpu-nds32.c | ||
| cpu-nfp.c | ||
| cpu-ns32k.c | ||
| cpu-or1k.c | ||
| cpu-pdp11.c | ||
| cpu-pj.c | ||
| cpu-powerpc.c | ||
| cpu-pru.c | ||
| cpu-riscv.c | ||
| cpu-riscv.h | ||
| cpu-rl78.c | ||
| cpu-rs6000.c | ||
| cpu-rx.c | ||
| cpu-s12z.c | ||
| cpu-s390.c | ||
| cpu-score.c | ||
| cpu-sh.c | ||
| cpu-sparc.c | ||
| cpu-spu.c | ||
| cpu-tic4x.c | ||
| cpu-tic6x.c | ||
| cpu-tic30.c | ||
| cpu-tic54x.c | ||
| cpu-tilegx.c | ||
| cpu-tilepro.c | ||
| cpu-v850_rh850.c | ||
| cpu-v850.c | ||
| cpu-vax.c | ||
| cpu-visium.c | ||
| cpu-wasm32.c | ||
| cpu-xgate.c | ||
| cpu-xstormy16.c | ||
| cpu-xtensa.c | ||
| cpu-z8k.c | ||
| cpu-z80.c | ||
| dep-in.sed | ||
| development.sh | ||
| dwarf1.c | ||
| dwarf2.c | ||
| ecoff-bfd.h | ||
| ecoff.c | ||
| ecofflink.c | ||
| ecoffswap.h | ||
| elf32-am33lin.c | ||
| elf32-arc.c | ||
| elf32-arm.c | ||
| elf32-arm.h | ||
| elf32-avr.c | ||
| elf32-avr.h | ||
| elf32-bfin.c | ||
| elf32-bfin.h | ||
| elf32-cr16.c | ||
| elf32-cr16.h | ||
| elf32-cris.c | ||
| elf32-crx.c | ||
| elf32-csky.c | ||
| elf32-csky.h | ||
| elf32-d10v.c | ||
| elf32-d30v.c | ||
| elf32-dlx.c | ||
| elf32-dlx.h | ||
| elf32-epiphany.c | ||
| elf32-fr30.c | ||
| elf32-frv.c | ||
| elf32-ft32.c | ||
| elf32-gen.c | ||
| elf32-h8300.c | ||
| elf32-hppa.c | ||
| elf32-hppa.h | ||
| elf32-i386.c | ||
| elf32-ip2k.c | ||
| elf32-iq2000.c | ||
| elf32-lm32.c | ||
| elf32-m32c.c | ||
| elf32-m32r.c | ||
| elf32-m68hc1x.c | ||
| elf32-m68hc1x.h | ||
| elf32-m68hc11.c | ||
| elf32-m68hc12.c | ||
| elf32-m68k.c | ||
| elf32-m68k.h | ||
| elf32-mcore.c | ||
| elf32-mep.c | ||
| elf32-metag.c | ||
| elf32-metag.h | ||
| elf32-microblaze.c | ||
| elf32-mips.c | ||
| elf32-moxie.c | ||
| elf32-msp430.c | ||
| elf32-mt.c | ||
| elf32-nds32.c | ||
| elf32-nds32.h | ||
| elf32-or1k.c | ||
| elf32-pj.c | ||
| elf32-ppc.c | ||
| elf32-ppc.h | ||
| elf32-pru.c | ||
| elf32-rl78.c | ||
| elf32-rx.c | ||
| elf32-rx.h | ||
| elf32-s12z.c | ||
| elf32-s390.c | ||
| elf32-score7.c | ||
| elf32-score.c | ||
| elf32-score.h | ||
| elf32-sh-relocs.h | ||
| elf32-sh.c | ||
| elf32-sparc.c | ||
| elf32-spu.c | ||
| elf32-spu.h | ||
| elf32-tic6x.c | ||
| elf32-tic6x.h | ||
| elf32-tilegx.c | ||
| elf32-tilegx.h | ||
| elf32-tilepro.c | ||
| elf32-tilepro.h | ||
| elf32-v850.c | ||
| elf32-v850.h | ||
| elf32-vax.c | ||
| elf32-visium.c | ||
| elf32-wasm32.c | ||
| elf32-xgate.c | ||
| elf32-xstormy16.c | ||
| elf32-xtensa.c | ||
| elf32-z80.c | ||
| elf32.c | ||
| elf64-alpha.c | ||
| elf64-amdgcn.c | ||
| elf64-bpf.c | ||
| elf64-gen.c | ||
| elf64-hppa.c | ||
| elf64-hppa.h | ||
| elf64-ia64-vms.c | ||
| elf64-mips.c | ||
| elf64-mmix.c | ||
| elf64-nfp.c | ||
| elf64-ppc.c | ||
| elf64-ppc.h | ||
| elf64-s390.c | ||
| elf64-sparc.c | ||
| elf64-tilegx.c | ||
| elf64-tilegx.h | ||
| elf64-x86-64.c | ||
| elf64.c | ||
| elf-attrs.c | ||
| elf-bfd.h | ||
| elf-eh-frame.c | ||
| elf-hppa.h | ||
| elf-ifunc.c | ||
| elf-linker-x86.h | ||
| elf-linux-core.h | ||
| elf-m10200.c | ||
| elf-m10300.c | ||
| elf-nacl.c | ||
| elf-nacl.h | ||
| elf-properties.c | ||
| elf-s390-common.c | ||
| elf-s390.h | ||
| elf-sframe.c | ||
| elf-strtab.c | ||
| elf-vxworks.c | ||
| elf-vxworks.h | ||
| elf.c | ||
| elfcode.h | ||
| elfcore.h | ||
| elflink.c | ||
| elfn32-mips.c | ||
| elfnn-aarch64.c | ||
| elfnn-ia64.c | ||
| elfnn-kvx.c | ||
| elfnn-loongarch.c | ||
| elfnn-riscv.c | ||
| elfxx-aarch64.c | ||
| elfxx-aarch64.h | ||
| elfxx-ia64.c | ||
| elfxx-ia64.h | ||
| elfxx-kvx-relocs.h | ||
| elfxx-kvx.c | ||
| elfxx-kvx.h | ||
| elfxx-loongarch.c | ||
| elfxx-loongarch.h | ||
| elfxx-mips.c | ||
| elfxx-mips.h | ||
| elfxx-riscv.c | ||
| elfxx-riscv.h | ||
| elfxx-sparc.c | ||
| elfxx-sparc.h | ||
| elfxx-target.h | ||
| elfxx-tilegx.c | ||
| elfxx-tilegx.h | ||
| elfxx-x86.c | ||
| elfxx-x86.h | ||
| format.c | ||
| gen-aout.c | ||
| genlink.h | ||
| go32stub.h | ||
| hash.c | ||
| host-aout.c | ||
| hppabsd-core.c | ||
| hpux-core.c | ||
| i386aout.c | ||
| i386bsd.c | ||
| i386lynx.c | ||
| i386msdos.c | ||
| ihex.c | ||
| init.c | ||
| irix-core.c | ||
| libaout.h | ||
| libbfd-in.h | ||
| libbfd.c | ||
| libbfd.h | ||
| libcoff-in.h | ||
| libcoff.h | ||
| libecoff.h | ||
| libhppa.h | ||
| libpei.h | ||
| libxcoff.h | ||
| linker.c | ||
| lynx-core.c | ||
| mach-o-aarch64.c | ||
| mach-o-arm.c | ||
| mach-o-i386.c | ||
| mach-o-target.c | ||
| mach-o-x86-64.c | ||
| mach-o.c | ||
| mach-o.h | ||
| MAINTAINERS | ||
| Makefile.am | ||
| Makefile.in | ||
| makefile.vms | ||
| mep-relocs.pl | ||
| merge.c | ||
| mmo.c | ||
| netbsd-core.c | ||
| netbsd.h | ||
| ns32k.h | ||
| ns32knetbsd.c | ||
| opncls.c | ||
| osf-core.c | ||
| pc532-mach.c | ||
| pdb.c | ||
| pdp11.c | ||
| pe-aarch64.c | ||
| pe-arm-wince.c | ||
| pe-arm.c | ||
| pe-i386.c | ||
| pe-mcore.c | ||
| pe-sh.c | ||
| pe-x86_64.c | ||
| pef-traceback.h | ||
| pef.c | ||
| pef.h | ||
| pei-aarch64.c | ||
| pei-arm-wince.c | ||
| pei-arm.c | ||
| pei-i386.c | ||
| pei-ia64.c | ||
| pei-loongarch64.c | ||
| pei-mcore.c | ||
| pei-riscv64.c | ||
| pei-sh.c | ||
| pei-x86_64.c | ||
| peicode.h | ||
| peXXigen.c | ||
| plugin.c | ||
| plugin.h | ||
| PORTING | ||
| ppcboot.c | ||
| ptrace-core.c | ||
| README | ||
| reloc16.c | ||
| reloc.c | ||
| rs6000-core.c | ||
| section.c | ||
| simple.c | ||
| som.c | ||
| som.h | ||
| srec.c | ||
| stab-syms.c | ||
| stabs.c | ||
| syms.c | ||
| sysdep.h | ||
| targets.c | ||
| targmatch.sed | ||
| tekhex.c | ||
| TODO | ||
| trad-core.c | ||
| vax1knetbsd.c | ||
| vaxnetbsd.c | ||
| verilog.c | ||
| version.h | ||
| version.m4 | ||
| vms-alpha.c | ||
| vms-lib.c | ||
| vms-misc.c | ||
| vms.h | ||
| warning.m4 | ||
| wasm-module.c | ||
| wasm-module.h | ||
| xcofflink.c | ||
| xcofflink.h | ||
| xsym.c | ||
| xsym.h | ||
| xtensa-dynconfig.c | ||
| xtensa-isa.c | ||
| xtensa-modules.c | ||
BFD is an object file library. It permits applications to use the
same routines to process object files regardless of their format.
BFD is used by the GNU debugger, assembler, linker, and the binary
utilities.
The documentation on using BFD is scanty and may be occasionally
incorrect. Pointers to documentation problems, or an entirely
rewritten manual, would be appreciated.
There is some BFD internals documentation in doc/bfdint.texi which may
help programmers who want to modify BFD.
BFD is normally built as part of another package. See the build
instructions for that package, probably in a README file in the
appropriate directory.
BFD supports the following configure options:
--target=TARGET
The default target for which to build the library. TARGET is
a configuration target triplet, such as sparc-sun-solaris.
--enable-targets=TARGET,TARGET,TARGET...
Additional targets the library should support. To include
support for all known targets, use --enable-targets=all.
--enable-64-bit-bfd
Include support for 64 bit targets. This is automatically
turned on if you explicitly request a 64 bit target, but not
for --enable-targets=all. This requires a compiler with a 64
bit integer type, such as gcc.
--enable-shared
Build BFD as a shared library.
--with-mmap
Use mmap when accessing files. This is faster on some hosts,
but slower on others. It may not work on all hosts.
Report bugs in BFD to https://sourceware.org/bugzilla/
Patches are encouraged. When sending patches, always send the output
of diff -u or diff -c from the original file to the new file. Do not
send default diff output. Do not make the diff from the new file to
the original file. Remember that any patch must not break other
systems. Remember that BFD must support cross compilation from any
host to any target, so patches which use ``#ifdef HOST'' are not
acceptable. Please also read the ``Reporting Bugs'' section of the
gcc manual.
Bug reports without patches will be remembered, but they may never get
fixed until somebody volunteers to fix them.
Copyright (C) 2012-2024 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.