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* xtensa-isa.c (xtensa_insnbuf_from_chars): Avoid signed overflow.
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bfd/
* libhppa.h (hppa_field_adjust, bfd_hppa_insn2fmt): Delete forward
declaration. Move ATTRIBUTE_UNUSED to definition.
(sign_extend, low_sign_extend, sign_unext, low_sign_unext),
(re_assemble_3, re_assemble_12, re_assemble_14, re_assemble_16),
(re_assemble_17, re_assemble_21, re_assemble_22): Likewise. Make
args and return value unsigned. Use unsigned variables.
(hppa_rebuild_insn): Similarly.
opcodes/
* hppa-dis.c (extract_16, extract_21, print_insn_hppa): Use
unsigned variables.
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* format.c (bfd_check_format_matches): Free matching_vector when
not returning matching target strings.
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* coff-alpha.c (alpha_ecoff_read_ar_hdr): Free ar_hdr on error return.
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"count * 8 >= size" might overflow, "count >= size / 8" doesn't.
* coff-rs6000.c (_bfd_xcoff_slurp_armap): Don't overflow when
checking symbol count against section size. Guard against strlen
running off end of buffer by allocating one more byte and zeroing.
* coff64-rs6000.c (xcoff64_slurp_armap): Likewise.
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This is fussing about nothing really but since I was looking at signed
vs. unsigned issues, I decided to use the correct types here.
* elf32-ppc.c (ppc_elf_get_synthetic_symtab): Use size_t for vars.
* elf64-ppc.c (sym_exists_at): Use size_t for lo, hi and mid.
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* elf-bfd.h (ELF_LOCAL_SYMBOL_HASH): Avoid signed overflow.
* elf32-hppa.c (final_link_relocate): Likewise.
* elf32-ppc.c (_bfd_elf_ppc_at_tls_transform): Likewise.
(_bfd_elf_ppc_at_tprel_transform, is_insn_ds_form): Likewise.
(is_insn_dq_form, ppc_elf_relocate_section): Likewise.
* elf64-ppc.c (ok_lo_toc_insn, ppc64_elf_edit_toc): Likewise.
(ppc64_elf_relocate_section): Likewise.
* elfxx-mips.c (mips_elf_perform_relocation): Likewise.
* netbsd.h (N_SET_FLAGS): Likewise.
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This is one way of fixing ubsan bug reports, just delete the code.
The assembler support was removed back in 2005 along with other
non-BFD assemblers, but somehow the remainder of the port stayed in.
bfd/
* coff-tic80.c: Delete file.
* cpu-tic80.c: Delete file.
* archures.c: Remove tic80 support.
* coffcode.h: Likewise.
* coffswap.h: Likewise.
* targets.c: Likewise.
* config.bfd: Likewise.
* configure.ac: Likewise.
* Makefile.am: Likewise.
* Makefile.in: Regenerate.
* bfd-in2.h: Regenerate.
* configure: Regenerate.
* po/SRC-POTFILES.in: Regenerate.
binutils/
* testsuite/binutils-all/objcopy.exp: Remove tic80 support.
* testsuite/binutils-all/objdump.exp: Likewise.
gas/
* doc/as.texi: Remove mention of tic80.
include/
* coff/tic80.h: Delete file.
* opcode/tic80.h: Delete file.
ld/
* emulparams/tic80coff.sh: Delete file.
* scripttempl/tic80coff.sc: Delete file.
* configure.tgt: Remove tic80 support.
* Makefile.am: Likewise.
* Makefile.in: Regenerate.
* po/BLD-POTFILES.in: Regenerate.
opcodes/
* tic80-dis.c: Delete file.
* tic80-opc.c: Delete file.
* disassemble.c: Remove tic80 support.
* disassemble.h: Likewise.
* Makefile.am: Likewise.
* configure.ac: Likewise.
* Makefile.in: Regenerate.
* configure: Regenerate.
* po/POTFILES.in: Regenerate.
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PR 25237
* elf.c (assign_file_positions_for_load_sections): Attempt to
keep meaningless p_offset for PT_LOAD segments without file
contents within file size.
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* libbfd.c (bfd_get): Don't cast result of bfd_get_8.
* bfd-in2.h: Regenerate.
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Aimed at quietening ubsan.
include/
* opcode/mmix.h (PUSHGO_INSN_BYTE): Make unsigned.
(GO_INSN_BYTE, SETL_INSN_BYTE, INCML_INSN_BYTE, INCMH_INSN_BYTE),
(INCH_INSN_BYTE, SWYM_INSN_BYTE, JMP_INSN_BYTE): Likewise.
bfd/
* elf32-rx.c (elf32_rx_relax_section): Avoid signed overflow.
* libaout.h (N_SET_INFO, N_SET_FLAGS): Likewise.
* netbsd.h (write_object_contents): Likewise.
* elf32-arm.c (bfd_elf32_arm_vfp11_erratum_scan): Likewise.
* libhppa.h (HPPA_R_CONSTANT): Don't signed extend with shifts.
(stm32l4xx_create_replacing_stub_vldm): Don't truncate high bits
with shifts.
* elf32-nds32.h (R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG): Define
using 1u shifted left. Ditto for other macros.
* mmo.c (LOP): Make unsigned.
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And similarly for bfd_get_signed_8.
bfd/
* libbfd.c (bfd_get_8): Return a bfd_vma.
(bfd_get_signed_8): Return a bfd_signed_vma.
* bfd-in2.h: Regenerate.
binutils/
* od-xcoff.c (dump_dumpx_core): Adjust for bfd_h_get_8 change.
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In Operand_soffsetx4_decode:
soffsetx4_0 = 0x4 + ((((int) offset_0 << 14) >> 14) << 2);
and other places.
Don't sign extend with shifts! This file also has many occurrences of
truncation via shifts, which aren't a problem due to using uint32, but
I dislike on principle enough to fix.
* xtensa-modules.c (Field_* functions): Don't mask using shifts.
(Operand_soffsetx4_decode, Operand_simm4_decode),
(Operand_simm8_decode, Operand_simm8x256_decode),
(Operand_simm12b_decode, Operand_label8_decode),
(Operand_label12_decode, Operand_soffset_decode),
(Operand_xt_wbr15_label_decode, Operand_xt_wbr18_label_decode): Don't
sign extend using shifts.
(Operand_immrx4_decode, Operand_uimm16x4_decode): Avoid UB in
constant.
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Here, since val is signed:
*valuep = (val << scale);
* cpu-ia64-opc.c (ext_imms_scaled): Avoid undefined left shift
of negative values by using unsigned vars.
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In cases where a relocatable object file has a common symbol, no other
file has a definition, and there is a matching common symbol found in
a shared library then ld will output a definition using the largest of
size and alignment for the commons. This patch fixes a bug in ld that
ignored common symbols when assigning versions, resulting in such
symbols being given VER_NDX_LOCAL versions.
PR 25236
* elflink.c (_bfd_elf_link_assign_sym_version): Assign versions
for ELF_COMMON_DEF_P symbols.
(elf_link_output_extsym, _bfd_elf_add_default_symbol): Adjust to
suit.
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This bug was observed on nios2-linux-gnu with some C++ programs
linked with -pie or -shared. The nios2 ABI doesn't include appropriate
relocations in this instance and GCC is also being patched not to pass
--eh-frame-hdr to the linker in those cases.
2019-12-05 Sandra Loosemore <sandra@codesourcery.com>
bfd/
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Make
FDE encoding warning conditional.
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PR 25029
* peXXigen.c (_bfd_XXi_swap_aouthdr_out): Ignore empty sections
when computing the sizes stored in the headers.
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This patch remedies the following DW_FORM_GNU_ref_alt related problem:
/* FIXME: Do we need to locate the correct CU, in a similar
fashion to the code in the DW_FORM_ref_addr case above ? */
Without the correct CU the wrong abbrevs are used, resulting in
errors and/or wrong file names.
There is scope for further work here. Parsing of CUs should be a two
step process, with the first stage just finding the bounds of the CU.
This would allow find_abstract_instance to quickly find the CU
referenced by DW_FORM_ref_addr or DW_FORM_GNU_ref_alt, then take the
second stage of CU parsing where abbrevs, ranges and suchlike consume
time and memory. As it is, we just process CUs from the start of
.debug_info until we find the one of interest. The testcase in the PR
takes 98G of virtual memory.
PR 25230
* dwarf2.c (struct dwarf2_debug_file): Add line_table and
abbrev_offsets.
(struct abbrev_offset_entry): New.
(hash_abbrev, eq_abbrev, del_abbrev): New functions.
(read_abbrevs): Check whether we have already read abbrevs at
given offset, and add new offset/abbrev to hash table.
(decode_line_info): Keep line table at offset zero in file struct.
Return this for a cu reusing the same dir/file list.
(find_abstract_instance): Find cu for DW_FORM_GNU_ref_alt.
(_bfd_dwarf2_slurp_debug_info): Create offset/abbrev hash tables.
(_bfd_dwarf2_cleanup_debug_info): Adjust deletion of lines and
abbrevs.
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This is just moving things around, in preparation for parsing alt
file debug_info.
PR 25230
* dwarf2.c (struct dwarf2_debug_file): New struct.
(struct dwarf2_debug): Delete fields now in dwarf2_debug_file.
Add f, alt fields.
(struct comp_unit): Add file field.
(read_indirect_string, read_indirect_line_string): Adjust to suit.
(read_alt_indirect_string, read_alt_indirect_ref): Likewise.
(read_debug_ranges, find_abstract_instance, read_rangelist): Likewise.
(_bfd_dwarf2_stash_syms, place_sections): Likewise.
(stash_maybe_update_info_hash_tablse): Likewise.
(stash_verify_info_hash_table): Likewise.
(_bfd_dwarf2_slurp_debug_info): Likewise.
(_bfd_dwarf2_find_symbol_bias): Likewise.
(_bfd_dwarf2_find_nearest_line): Likewise.
(_bfd_dwarf2_cleanup_debug_info): Likewise.
(read_abbrevs): Add file param and adjust. Update calls.
(stash_comp_unit): Likewise.
(decode_line_info): Delete stash param and adjust. Update calls.
(comp_unit_find_nearest_line): Likewise.
(comp_unit_maybe_decode_line_info): Likewise.
(comp_unit_find_line): Likewise.
(parse_comp_unit): Add file and info_ptr param and adjust. Update
calls.
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read_section does offset checking, reporting an error on out of
bounds. There's no need to duplicate the check in functions calling
read_section. Also, I spotted a place where a pointer difference
expression was being cast to unsigned int, possibly truncating
relevant bits on a 64-bit host.
* dwarf2.c (read_indirect_string): Don't duplicate offset check
done in read_section.
(read_indirect_line_string): Likewise.
(read_alt_indirect_string): Likewise.
(read_alt_indirect_ref): Likewise.
(read_abbrevs): Likewise. Free memory on all failure paths.
Use correct unsigned type for pointer difference comparison.
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These are unused. Remove them. Also fix the wrong sort of 0 being
returned from read_alt_indirect_ref.
* dwarf2.c (struct dwarf2_debug): Update comments. Remove sec
and sec_info_ptr.
(_bfd_dwarf2_slurp_debug_info): Don't set sec or sec_info_ptr.
(stash_comp_unit): Likewise.
(read_alt_indirect_ref): Return NULL not FALSE.
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These lines should have been removed along with the addr_size parameter.
* dwarf2.c (_bfd_dwarf2_find_nearest_line): Correct function comment.
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There were a number of problems with the previous patch. Firstly,
_bfd_dwarf2_stash_syms didn't do anything when the original file had
dynamic symbols, and secondly, info found by the symbol search didn't
make it out of _bfd_elf_find_nearest_line except in the case of DWARF
functions without external linkage.
PR 23652
* dwarf2.c (_bfd_dwarf2_stash_syms): Break out of loop on finding
matching section.
(_bfd_dwarf2_find_nearest_line): Return an int, with value 2 when
returning info from the symbol table. Do the _bfd_elf_find_function
search also when !found. Call _bfd_dwarf2_stash_syms regardless of
symbols.
* elf64-alpha.c (elf64_alpha_find_nearest_line): Accept dwarf2
result of 1 only.
* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Likewise.
* libbfd-in.h (_bfd_dwarf2_find_nearest_line): Update prototype.
* libbfd.h: Regenerate.
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Sometimes DWARF info for a function is incomplete, and the function
can be retrieved by examining symbols. However, when separate debug
files are used it may be that the original file is completely
stripped of symbols. This patch teaches BFD to look at symbols from
the debug file in that case.
The patch also removes arm_elf_find_function, instead implementing
elf_backend_maybe_function_sym. arm_elf_find_function was written
before the generic _bfd_elf_find_function called maybe_function_sym.
aarch64 copied arm, so that file gets the same treatment. There is
some chance this will speed up arm and aarch64 lookup of function/line.
PR 23652
* dwarf2.c (_bfd_dwarf2_stash_syms): New function.
(_bfd_dwarf2_find_nearest_line): Use it here, passing syms to
_bfd_elf_find_function. Call _bfd_elf_find_function in cases
where _bfd_elf_find_nearest_line would do so.
* elf.c (_bfd_elf_find_nearest_line): Omit _bfd_elf_find_function
for dwarf2.
* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Similarly. Tidy.
* elf32-arm.c (elf32_arm_maybe_function_sym): New function.
(elf_backend_maybe_function_sym): Define.
(arm_elf_find_function, elf32_arm_find_nearest_line): Delete.
(bfd_elf32_find_nearest_line): Don't define.
* elfnn-aarch64.c (elfNN_aarch64_maybe_function_sym): New function.
(elf_backend_maybe_function_sym): Define.
(aarch64_elf_find_function, elfNN_aarch64_find_nearest_line): Delete.
(bfd_elfNN_find_nearest_line): Don't define.
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Using bfd_vma for insn is to avoid having to worry about sign
propagation in expressions involving insn and sym_value when bfd_vma
is not the same as unsigned long.
* elf32-sh.c (sh_reloc): Use a bfd_vma insn.
(sh_reloc <R_SH_IND12W>): Divide calculated relocation value
by two before applying to insn. Correct overflow test.
* coff-sh.c (sh_reloc): Likewise.
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* elf32-sh.c (sh_elf_reloc): Use a signed_vma when checking for a
negative relocated value.
* coff-sh.c (sh_reloc): Likewise.
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