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The "drop" call in wrap_comment already increments pc. Defining DOCDD
in proto.str is a warning fix.
PR 31314
* chew.c (wrap_comment): Don't increment pc.
* proto.str (DOCDD): Define.
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I mistakenly vandalized bfd.texi in the commit
0c45feb159a14ca4cb50cfbf45eacaf5a6cecf2b by removing an entry in the
manual menu. This commit reverts that thunk.
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There are no legacy ldind nor ldabs BPF instructions with BPF_SIZE_DW.
For some reason we were (incorrectly) supporting these. This patch
updates the opcodes so the instructions get removed and modifies the
GAS manual and testsuite accordingly.
See discussion at
https://lore.kernel.org/bpf/110aad7a-f8a3-46ed-9fda-2f8ee54dcb89@linux.dev
Tested in bpf-uknonwn-none target, x86-64-linux-gnu host.
include/ChangeLog:
2024-01-29 Jose E. Marchesi <jose.marchesi@oracle.com>
* opcode/bpf.h (enum bpf_insn_id): Remove BPF_INSN_LDINDDW and
BPF_INSN_LDABSDW instructions.
opcodes/ChangeLog:
2024-01-29 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf-opc.c (bpf_opcodes): Remove BPF_INSN_LDINDDW and
BPF_INSN_LDABSDW instructions.
gas/ChangeLog:
2024-01-29 Jose E. Marchesi <jose.marchesi@oracle.com>
* doc/c-bpf.texi (BPF Instructions): There is no indirect 64-bit
load instruction.
(BPF Instructions): There is no absolute 64-bit load instruction.
* testsuite/gas/bpf/mem.s: Update test accordingly.
* testsuite/gas/bpf/mem-be-pseudoc.d: Likewise.
* testsuite/gas/bpf/mem-be.d: Likewise.
* testsuite/gas/bpf/mem-pseudoc.d: Likewise.
* testsuite/gas/bpf/mem-pseudoc.s: Likewise.
* testsuite/gas/bpf/mem.d: Likewise.
* testsuite/gas/bpf/mem.s: Likewise.
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The old code works because R_LARCH_RELAX has no symbol index. It causes
'(rel + 1)->r_info == R_LARCH_RELAX' is 1 and ELFNN_R_TYPE (1) is 1.
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Add support for TLS LE symbol with addend, such as:
lu12i.w $t0, %le_hi20(a + 0x8)
ori $t0, $t0, %le_lo12(a + 0x8)
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TLS LE is exclusively for executables, while DF_STATIC_TLS is for DLLs.
DF_STATIC_TLS should only be set for TLS IE (and when it's DLL), not LE.
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Remove hosts/mipsbsd.h and scripttempl/mipsbsd.sc which are unused
after
commit 3596d8ceb2cdc35b4fd702ee9daace5a2d880174
Author: Alan Modra <amodra@gmail.com>
Date: Wed Apr 18 15:39:34 2018 +0930
Remove mips aout, coff, and pe support
bfd/
* hosts/mipsbsd.h: Removed.
ld/
* scripttempl/mipsbsd.sc: Removed.
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This corrects a counting problem, where prior to relocate_section relr
encoded relative relocs were allowed when it was known they were on
even boundaries, but relocate_section can only put relative relocs
(non-relr) on eight byte boundaries.
PR 30824
* elf64-ppc.c (RELR_ALIGN): Define, use throughout.
(maybe_relr): New function, use throughout.
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v2.30
In LoongArch psABI v2.30, an offset (-8 for LO20 and -12 for HI12)
should be applied on PC for these reloc types to avoid wrong relocation
when the instruction sequence crosses a page boundary.
The lld linker has already adapted the change. Make it for the bfd
linker too.
Link: https://github.com/loongson/la-abi-specs/releases/v2.30
Link: https://github.com/loongson-community/discussions/issues/17
Link: https://github.com/llvm/llvm-project/pull/73387
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
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This fixes the ld "Handle no DWARF information" testcase. Which
currently fails on riscv because a local label name is assumed
to be the current function name.
bfd/ChangeLog:
* elfnn-riscv.c (riscv_maybe_function_sym): Also check
_bfd_elf_is_local_label_name.
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Relocations installed by the BPF ELF backend were sometimes incorrectly
adding the symbol value to the relocation entry addend, when the correct
relocation value was already stored in the addend. This could lead to a
relocation effectively adding the symbol value twice.
Fix that by making bpf_elf_generic_reloc () more similar to the flow of
bfd_install_relocation in the case where howto->install_addend is set,
which is how it ought to behave.
bfd/
* bpf-reloc.def (R_BPF_64_ABS32, R_BPF_64_ABS64)
(R_BPF_64_NODYLD32): Set partial_inplace to true.
* elf64-bpf.c (bpf_elf_generic_reloc): Do not include the value
of the symbol when installing relocation. Copy some additional
logic from bfd_elf_generic_reloc.
gas/
* testsuite/gas/bpf/bpf.exp: Run new test.
* testsuite/gas/bpf/elf-relo-1.d: New.
* testsuite/gas/bpf/elf-relo-1.s: New.
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When deleting NOP instructions addend by .align at second pass, this may cause
the PC decrease but the symbol address to remain unchanged due to section
alignment.
To solve this question, we subtract a maximux alignment of all sections like
RISC-V.
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When -z mark-plt is used to add DT_X86_64_PLT, DT_X86_64_PLTSZ and
DT_X86_64_PLTENT, the r_addend field of the R_X86_64_JUMP_SLOT relocation
stores the offset of the indirect branch instruction. However, glibc
versions which don't have this commit in glibc 2.36:
commit f8587a61892cbafd98ce599131bf4f103466f084
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri May 20 19:21:48 2022 -0700
x86-64: Ignore r_addend for R_X86_64_GLOB_DAT/R_X86_64_JUMP_SLOT
According to x86-64 psABI, r_addend should be ignored for R_X86_64_GLOB_DAT
and R_X86_64_JUMP_SLOT. Since linkers always set their r_addends to 0, we
can ignore their r_addends.
Reviewed-by: Fangrui Song <maskray@google.com>
won't ignore the r_addend value in the R_X86_64_JUMP_SLOT relocation.
Although this commit has been backported to glibc 2.33/2.34/2.35 release
branches, it is safer to require glibc 2.36 for such binaries.
Extend the glibc version dependency of GLIBC_ABI_DT_RELR for DT_RELR to
also add GLIBC_2.36 version dependency for -z mark-plt on the shared C
library if it provides a GLIBC_2.XX symbol version.
* elflink.c (elf_find_verdep_info): Moved to ...
* elf-bfd.h (elf_find_verdep_info): Here.
(elf_backend_data): Add elf_backend_add_glibc_version_dependency.
(_bfd_elf_link_add_glibc_version_dependency): New function.
(_bfd_elf_link_add_dt_relr_dependency): Likewise.
* elf64-x86-64.c (elf_x86_64_add_glibc_version_dependency):
Likewise.
(elf_backend_add_glibc_version_dependency): New.
* elflink.c (elf_link_add_dt_relr_dependency): Renamed to ...
(elf_link_add_glibc_verneed): This. Modified to support other
glibc dependencies.
(_bfd_elf_link_add_glibc_version_dependency): Likewise.
(_bfd_elf_link_add_dt_relr_dependency): Likewise.
(bfd_elf_size_dynamic_sections): Call
elf_backend_add_glibc_version_dependency instead of
elf_link_add_dt_relr_dependency.
* elfxx-target.h (elf_backend_add_glibc_version_dependency): New.
(elfNN_bed): Add elf_backend_add_glibc_version_dependency.
ld/
* testsuite/ld-x86-64/mark-plt-1a.rd: New file.
* testsuite/ld-x86-64/mark-plt-1b.rd: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run -z mark-plt test for
GLIBC_2.36 dependency.
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Update x86 ELF linker to skip R_386_NONE/R_X86_64_NONE when scanning
relocations.
bfd/
* PR ld/31047
* elf32-i386.c (elf_i386_scan_relocs): Don't check R_386_NONE.
* elf64-x86-64.c (elf_x86_64_scan_relocs): Don't check
R_X86_64_NONE.
ld/
* PR ld/31047
* testsuite/ld-i386/i386.exp: Run PR ld/31047 test.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/pr31047.d: New file.
* testsuite/ld-x86-64/pr31047-x32.d: Likewise.
* testsuite/ld-x86-64/pr31047.d: Likewise.
* testsuite/ld-x86-64/pr31047a.s: Likewise.
* testsuite/ld-x86-64/pr31047b.s: Likewise.
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While having been moved a couple of times since its introduction in
f6c7c3e8b742 ("Referencing a function's address on PowerPC64 ELFv2"),
the wording has always remained the same. In particular ELFv1 and ELFv2
have always been the wrong way round.
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This patch adds linker support to patch R_BPF_64_NODYLD32 relocations.
The implementation was based on comments and code in LLVM, as the GNU
toolchain does not uses this relocation type.
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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>
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Avoid an error when compiling with older versions of gcc.
* elfnn-loongarch.c (loongarch_relax_align): Rename "index" to
"sym_index".
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In commit 83c79df86bf4 I removed configure tests for strtoull among
other library functions part of C99, but didn't remove what is now
dead code.
* bfd.c (bfd_scan_vma): Delete fall-back for strtoull.
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