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| author | David Faust <david.faust@oracle.com> | 2020-08-06 15:14:54 +0200 |
|---|---|---|
| committer | Jose E. Marchesi <jose.marchesi@oracle.com> | 2020-08-06 15:14:54 +0200 |
| commit | 3ee9565c95f49b6f9e80641f6fda51adffc3af1e (patch) | |
| tree | 5690b3e6eccd1fd4820d9dccba2540138143b3b4 /ld/testsuite/ld-bpf/reloc-data-le.d | |
| parent | 1a9f72a7a8f445b8d665eb36b053a18e758e63e6 (diff) | |
| download | gdb-3ee9565c95f49b6f9e80641f6fda51adffc3af1e.zip gdb-3ee9565c95f49b6f9e80641f6fda51adffc3af1e.tar.gz gdb-3ee9565c95f49b6f9e80641f6fda51adffc3af1e.tar.bz2 | |
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.
Diffstat (limited to 'ld/testsuite/ld-bpf/reloc-data-le.d')
| -rw-r--r-- | ld/testsuite/ld-bpf/reloc-data-le.d | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ld/testsuite/ld-bpf/reloc-data-le.d b/ld/testsuite/ld-bpf/reloc-data-le.d new file mode 100644 index 0000000..97cb1b3 --- /dev/null +++ b/ld/testsuite/ld-bpf/reloc-data-le.d @@ -0,0 +1,11 @@ +#as: --EL +#source: reloc-data.s +#objdump: -s +#ld: -Tdata=0x20 -EL +#name: data relocs LE + +.*: file format .*-bpfle + +Contents of section \.data: + 0020 666f6f00 62617200 20000000 00000000 .* + 0030 28000000 300034 .* |