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Simplifies the code a little. No functional changes.
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writevalue didn't handle 64-bit values, dropping the high 32 bits,
and also wrote any value in the range [0,15] as 0.
* tekhex.c (first_phase): Handle *ABS* symbols.
(writevalue): Rewrite.
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originally the reason for pre-sizing was that that's easier
for a multi-threaded use of the hash table. That hasn't materialized
yet, so there's not much sense in using the very very conservative
estimates for pre-sizing. Doing the resize on-demand, whenever we
actually need to add a new entry doesn't change performance.
bfd/
merge.c (sec_merge_hash_insert): Resize as needed from here ...
(record_section): ... not from here. Don't calculate estimates,
return bool instead of three-state, regard all errors as soft
errors.
(_bfd_merge_sections): Adjust.
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Local absolute symbols are resolved at assembly stage and the symbol
value is placed in the relocation addend. But non-zero addend will
cause an assertion failure during linking.
Forces emission of relocations to defer resolution of local abs symbols
until link time.
bfd/
* elfnn-loongarch.c (loongarch_elf_relax_section): Determine
absolute symbols in advance to avoid ld crash.
gas/
* config/tc-loongarch.c (loongarch_force_relocation): New
function to force relocation.
* config/tc-loongarch.h (TC_FORCE_RELOCATION): New macros
to force relocation.
(loongarch_force_relocation): Function declaration.
* testsuite/gas/loongarch/localpic.d: New test.
* testsuite/gas/loongarch/localpic.s: New test.
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PR 32260
bfd/
* elfxx-target.h (bfd_elfNN_bfd_merge_sections): Default to
bfd_generic_merge_sections when using the generic linker.
* elflink.c (_bfd_elf_merge_sections): Return error from
_bfd_merge_sections. Abort on wrong hash table.
ld/
* ldlang.c (lang_process): Report bfd_merge_sections error.
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the way the overflow check was written wasn't understood by some
GCC versions and produced false positives for the memset call being
called potentially with object sizes that are larger than half
address-space.
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if the input sections are near the max supported size (4G)
we might fail to enlarge the hash table. The error handling
for this case didn't quite work. When this happens we can
gracefully fall back to just not deduplicate this section
(and continue with further mergable sections). We were mixing
that with the case of not being able to even allocate a small
structure (in which case we can as well error out completely),
this disentables both cases.
bfd/
PR ld/32260
* merge.c (sec_merge_maybe_resize): Check overflow in ultimate
target type.
(record_section): Return three-state, use new state when unable
to enlarge hash table.
(_bfd_merge_sections): Remove current section from merging
consideration when hashtable can't be enlarged.
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Building shared libraries should not be allowed for PC-relative
relocations against external symbols.
Currently LoongArch has no corresponding checks and silently
generates wrong shared libraries.
However, In the first version of the medium cmodel, pcalau12i+jirl was
used for function calls, in which case PC-relative relocations were
allowed.
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This is the assertion that vars->string_ptr < vars->end_string_ptr,
ie. when it fails we've overflowed the string buffer area. Caused by
allocating space for import_name but writing symbol_name, and they can
be different.
* peicode.h (SIZEOF_ILF_STRINGS): Revert 042f14505e change.
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Change the mmap support added with commit 9ba56acee518 to always mmap
memory with PROT_READ | PROT_WRITE. Prior to that commit most file
contents were read into a buffer allocated with bfd_alloc or
bfd_malloc and thus the memory was read/write. Even after that commit
any section contents with relocations must be read/write to apply the
relocs. Making them all read/write is not a major change, and it
should not introduce any measurable linker slowdown for contents that
are not modified. More importantly, it removes a BFD behaviour
difference that only triggers when large files are involved.
PR 32266
PR 32109
* libbfd.c (bfd_mmap_local): Remove prot param. Always mmap
with PROT_READ | PROT_WRITE. Adjust all calls.
(_bfd_mmap_temporary): Rename from _bfd_mmap_readonly_temporary.
(_bfd_munmap_temporary): Rename from _bfd_munmap_readonly_temporary.
_bfd_mmap_persistent): Rename from _bfd_mmap_readonly_persistent.
(_bfd_generic_get_section_contents): Use PROT_READ | PROT_WRITE
regardless of relocs.
* libbfd-in.h: Update decls to suit. Make non-USE_MMAP variants
static inline functions.
* elflink.c: Update all uses of _bfd_mmap functions.
* elf.c: Likewise.
(bfd_elf_get_str_section): Revert commit 656f8fbaae.
* libbfd.h: Regenerate.
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Add relaxation support for call36 that jump to PLT entry.
Add relaxation support for call36 with IFUNC symbol.
Add relaxation support for call36 that jump to undefweak symbol.
For undefweak symbol, it can always be relaxed if it have no PLT entry.
Because we set the address of undefweak symbol without PLT entry to PC
like relocate_section.
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The symbol value is only calculated when the relocation can be relaxed.
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Switch the sole user to BFD_ALIGN() instead. (It's comment was partly
wrong [stale?] anyway, talking of some maximum that was nowhere in
sight.)
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While for executables properly aligning sections within the file can be
quite relevant, the same is of pretty little importance for relocatable
object files. Avoid passing "true" into
_bfd_elf_assign_file_position_for_section() when dealing with object
files, but compensate minimally by applying log_file_align in such
cases as a cap to the alignment put in place.
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Commit 68bbe1183379 results in a lot of follow up work, much of which
likely is still to be done. (And yes, since this is all for corrupted
or fuzzed object files, a whole lot of work doesn't much benefit
anyone. It was a bad idea to put NULL in asymbol->name.) So I'm
changing the approach to instead put a unique empty string for symbols
with a corrupted st_name. An empty string won't require much work to
ensure nm, objcopy, objdump etc. won't crash, since these tools
already must work with unnamed local symbols.
The unique empty string is called bfd_symbol_error_name. This patch
uses that name string for corrupted symbols in the ELF and COFF
backends. Such symbols are displayed by nm and objdump as the
translated string "<corrupt>", which is what the COFF backend used to
put directly into corrupted symbols.
ie. it's the way I should have written the original patch, plus a few
tides and cleanups I retained from the reverted patches.
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This reverts commit 68bbe118337939aa0b52e007a7415c8a157579a1.
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This reverts commit 265757dc6e4d011a1b33ef1b3bfcd7f100f12f64.
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This reverts commit 0c13ac533e59589793ee6c8045cff98663f3ea85.
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This reverts commit 6e40f9bb31be2f3656df97a1fcba4d6a30081e24.
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This reverts commit 389fdfbe0d2aca0af1431ddf34704534dacc48c8.
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1 Zabha depends on Zaamo:
<https://github.com/riscv/riscv-isa-manual/blob/main/src/zabha.adoc>
2 Zacas depends on Zaamo:
<https://github.com/riscv/riscv-isa-manual/blob/main/src/zacas.adoc>
bfd/ChangeLog:
* elfxx-riscv.c: Zabha and Zacas implicitly depend on Zaamo.
gas/ChangeLog:
* testsuite/gas/riscv/imply.d: Updated.
Signed-off-by: Xiao Zeng <zengxiao@eswincomputing.com>
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Plus some tidies to swap_out_syms.
* elf.c (swap_out_syms): Handle NULL sym name. Use correct type
for return of _bfd_elf_strtab_add. Simplify.
* elflink.c (bfd_elf_match_symbols_in_sections): Handle NULL
sym name.
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