Commit Graph

7 Commits

Author SHA1 Message Date
Alan Modra
a2c5833233 Update year range in copyright notice of binutils files
The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.

The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
2022-01-02 12:04:28 +10:30
Alan Modra
250d07de5c Update year range in copyright notice of binutils files 2021-01-01 10:31:05 +10:30
Jose E. Marchesi
aebda2fbcb bpf: add missing tests from previous commits
2020-08-07  David Faust  <david.faust@oracle.com>

	* testsuite/ld-bpf/call-3.s: New file.
	* testsuite/ld-bpf/call-3.d: Likewise.
2020-08-07 20:40:01 +02:00
David Faust
3ee9565c95 bpf: relocation fixes for eBPF ELF backend
The eBPF ELF backend was not properly recording relocation addends
during installation, nor reading and applying them when performing
the final relocation. This lead to various issues with incorrect
relocations.

These issues are fixed with a new howto special function to install
the relocations, and updates to bpf_elf_relocate_section to read and
use the addends as recorded in the input_bfd.

bfd/ChangeLog

2020-08-05  David Faust  <david.faust@oracle.com>

	* elf64-bpf.c (bpf_elf_generic_reloc): New function.
	(bpf_elf_howto_table): Use it here.
	(bpf_elf_relocate_section): Use addends recorded in input_bfd for
	instruction and data relocations.

ld/ChangeLog

2020-08-05  David Faust  <david.faust@oracle.com>

	* testsuite/ld-bpf/call-2.s: New file.
	* testsuite/ld-bpf/call-2.d: Likewise.
	* testsuite/ld-bpf/reloc-data-be.d: Likewise.
	* testsuite/ld-bpf/reloc-data-le.d: Likewise.
	* testsuite/ld-bpf/reloc-data.s: Likewise.
	* testsuite/ld-bpf/reloc-insn-external-be.d: Likewise.
	* testsuite/ld-bpf/reloc-insn-external-le.d: Likewise.
	* testsuite/ld-bpf/reloc-insn-external.s: Likewise.
	* testsuite/ld-bpf/reloc-insn32-be.d: Likewise.
	* testsuite/ld-bpf/reloc-insn32-le.d: Likewise.
	* testsuite/ld-bpf/reloc-insn32.s: Likewise.
	* testsuite/ld-bpf/reloc-insn64-be.d: Likewise.
	* testsuite/ld-bpf/reloc-insn64-le.d: Likewise.
	* testsuite/ld-bpf/reloc-insn64.s: Likewise.
2020-08-06 15:14:54 +02:00
Alan Modra
b3adc24a07 Update year range in copyright notice of binutils files 2020-01-01 18:42:54 +10:30
Jose E. Marchesi
fca8e23c31 ld: use a specific linker script in BPF targets
This patch makes the elf64bpf emulation to use it's own linker script,
based on elf.sc.  At the moment, the only change is that the BPF
executable doesn't define an entry symbol (BPF programs feature
several entry points scattered in several sections.)

This is a step towards the goal of generating proper ELF executables
that would be loaded by the kernel's libbpf.  We are not there yet:
BPF "programs" should still be linked with -r.

This change removes a warning while linking executables, decreases the
number of unsupported tests in the target from 47 to 29, and increases
the number of expected passes from 104 to 145.

Regtested in x86_64 for all targets.
No regressions.

ld/ChangeLog:

2019-08-07  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* scripttempl/elf64bpf.sc: Adapted from elf.sc.
	* emulparams/elf64bpf.sh (SCRIPT_NAME): Use elf64bpf.
	(EMBEDDED): Define.
	* testsuite/ld-bpf/call-1.d: Do not expect a warning regarding an
	undefined entry symbol.
	* testsuite/ld-bpf/jump-1.d: Likewise.
	* testsuite/ld-undefined/undefined.exp: Do not pass '-e entry' to
	ld in BPF targets, and do not expect line number information.
	* testsuite/ld-srec/srec.exp (run_srec_test): xfail s-record tests
	in BPF targets.
2019-08-07 13:57:30 +02:00
Jose E. Marchesi
8376927b2c ld: add support for eBPF
This patch adds support to the linker for the Linux eBPF architecture.
A minimal testsuite is included.

ld/ChangeLog:

2019-05-23  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* Makefile.am (ALL_64_EMULATION_SOURCES): Add eelf64bpf.c.
	* Makefile.in (prefix): Regenerate.
	* configure.tgt (targ_extra_ofiles): Add case for bpf-*-* targets.
	* emulparams/elf64bpf.sh: New file.
	* testsuite/lib/ld-lib.exp (check_gc_sections_available): Add
	bpf-*-* to the list of targets not supporting gc-sections.
	* testsuite/ld-bpf/bar.s: New file.
	* testsuite/ld-bpf/jump-1.d: Likewise.
	* testsuite/ld-bpf/foo.s: Likewise.
	* testsuite/ld-bpf/call-1.d: Likewise.
	* testsuite/ld-bpf/bpf.exp: Likewise.
	* testsuite/ld-bpf/baz.s: Likewise.
2019-05-23 19:34:15 +02:00