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binutils-gdb/include/ChangeLog
H.J. Lu 50c95a739c x86: Propery check PC16 reloc overflow in 16-bit mode instructions 
commit a7664973b2
Author: Jan Beulich <jbeulich@suse.com>
Date:   Mon Apr 26 10:41:35 2021 +0200

    x86: correct overflow checking for 16-bit PC-relative relocs

caused linker failure when building 16-bit program in a 32-bit ELF
container.  Update GNU_PROPERTY_X86_FEATURE_2_USED with

 #define GNU_PROPERTY_X86_FEATURE_2_CODE16 (1U << 12)

to indicate that 16-bit mode instructions are used in the input object:

https://groups.google.com/g/x86-64-abi/c/UvvXWeHIGMA

to indicate that 16-bit mode instructions are used in the object to
allow linker to properly perform relocation overflow check for 16-bit
PC-relative relocations in 16-bit mode instructions.

1. Update x86 assembler to always generate the GNU property note with
GNU_PROPERTY_X86_FEATURE_2_CODE16 for .code16 in ELF object.
2. Update i386 and x86-64 linkers to use 16-bit PC16 relocations if
input object is marked with GNU_PROPERTY_X86_FEATURE_2_CODE16.

bfd/

	PR ld/27905
	* elf32-i386.c: Include "libiberty.h".
	(elf_howto_table): Add 16-bit R_386_PC16 entry.
	(elf_i386_rtype_to_howto): Add a BFD argument.  Use 16-bit
	R_386_PC16 if input has 16-bit mode instructions.
	(elf_i386_info_to_howto_rel): Update elf_i386_rtype_to_howto
	call.
	(elf_i386_tls_transition): Likewise.
	(elf_i386_relocate_section): Likewise.
	* elf64-x86-64.c (x86_64_elf_howto_table): Add 16-bit
	R_X86_64_PC16 entry.
	(elf_x86_64_rtype_to_howto): Use 16-bit R_X86_64_PC16 if input
	has 16-bit mode instructions.
	* elfxx-x86.c (_bfd_x86_elf_parse_gnu_properties): Set
	elf_x86_has_code16 if relocatable input is marked with
	GNU_PROPERTY_X86_FEATURE_2_CODE16.
	* elfxx-x86.h (elf_x86_obj_tdata): Add has_code16.
	(elf_x86_has_code16): New.

binutils/

	PR ld/27905
	* readelf.c (decode_x86_feature_2): Support
	GNU_PROPERTY_X86_FEATURE_2_CODE16.

gas/

	PR ld/27905
	* config/tc-i386.c (set_code_flag): Update x86_feature_2_used
	with GNU_PROPERTY_X86_FEATURE_2_CODE16 for .code16 in ELF
	object.
	(set_16bit_gcc_code_flag): Likewise.
	(x86_cleanup): Always generate the GNU property note if
	x86_feature_2_used isn't 0.
	* testsuite/gas/i386/code16-2.d: New file.
	* testsuite/gas/i386/code16-2.s: Likewise.
	* testsuite/gas/i386/x86-64-code16-2.d: Likewise.
	* testsuite/gas/i386/i386.exp: Run code16-2 and x86-64-code16-2.

include/

	PR ld/27905
	* elf/common.h (GNU_PROPERTY_X86_FEATURE_2_CODE16): New.

ld/

	PR ld/27905
	* testsuite/ld-i386/code16.d: New file.
	* testsuite/ld-i386/code16.t: Likewise.
	* testsuite/ld-x86-64/code16.d: Likewise.
	* testsuite/ld-x86-64/code16.t: Likewise.
	* testsuite/ld-i386/i386.exp: Run code16.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
2021-05-26 12:13:24 -07:00

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2021-05-26 H.J. Lu <hongjiu.lu@intel.com>
PR ld/27905
* elf/common.h (GNU_PROPERTY_X86_FEATURE_2_CODE16): New.
2021-05-23 Tiezhu Yang <yangtiezhu@loongson.cn>
* elf/common.h (EM_LOONGARCH): Change Loongson Loongarch to
LoongArch.
2021-05-21 Luis Machado <luis.machado@linaro.org>
* elf/common.h (NT_MEMTAG): New constant.
(NT_MEMTAG_TYPE_AARCH_MTE): New constant.
2021-05-07 Clément Chigot <clement.chigot@atos.net>
* coff/internal.h (C_DWARF): New define.
* coff/xcoff.h (SSUBTYP_DWLOC, SSUBTYP_DWFRAME,
SSUBTYP_DWMAC): New defines.
2021-05-06 Stafford Horne <shorne@gmail.com>
PR 21464
* elf/or1k.h (elf_or1k_reloc_type): Define R_OR1K_GOT_AHI16 number.
2021-05-06 Nick Alcock <nick.alcock@oracle.com>
* ctf.h (CTF_K_UNKNOWN): Document that it can be used for
nonrepresentable types, not just padding.
* ctf-api.h (ctf_add_unknown): New.
2021-04-22 Clément Chigot <clement.chigot@atos.net>
* coff/internal.h (union internal_auxent):
Add x_sect structure.
* coff/rs6000.h (union external_auxent): Rework to
match official documentation.
* coff/rs6k64.h (union external_auxent): Likewise.
(_AUX_SECT): New define.
2021-04-21 Eli Zaretskii <eliz@gnu.org>
PR 27760
* coff/pe.h (IMAGE_DLLCHARACTERISTICS_APPCONTAINER): Define.
(IMAGE_DLLCHARACTERISTICS_GUARD_CF): Define.
2021-04-16 Alan Modra <amodra@gmail.com>
PR 27567
* coff/internal.h (struct internal_scnhdr): Make s_flags unsigned long.
* coff/pe.h (COFF_ENCODE_ALIGNMENT): Don't set align flags for an
executable and return false. Do so for a relocatable object and
evaluate to true.
* coff/ti.h (COFF_ENCODE_ALIGNMENT): Add bfd arg and evaluate to true.
(COFF_DECODE_ALIGNMENT): Formatting.
* coff/z80.h (COFF_ENCODE_ALIGNMENT): Similarly.
(COFF_DECODE_ALIGNMENT): Similarly.
2021-04-09 Alan Modra <amodra@gmail.com>
* dis-asm.h (struct disassemble_info): Add dynrelbuf and dynrelcount.
2021-04-06 Alan Modra <amodra@gmail.com>
* dis-asm.h (struct disassemble_info <symbol_at_address_func>):
Return asymbol*.
2021-04-01 Martin Liska <mliska@suse.cz>
* opcode/cr16.h (strneq): Remove strneq and use startswith.
2021-03-31 Alan Modra <amodra@gmail.com>
* bfdlink.h: Replace bfd_boolean with bool throughout.
* coff/ecoff.h: Likewise.
* coff/xcoff.h: Likewise.
* dis-asm.h: Likewise.
* elf/mmix.h: Likewise.
* elf/xtensa.h: Likewise.
* opcode/aarch64.h: Likewise, and FALSE with false, TRUE with true.
* opcode/arc.h: Likewise.
* opcode/mips.h: Likewise.
* opcode/tic6x-opcode-table.h: Likewise.
* opcode/tic6x.h: Likewise.
2021-03-31 Alan Modra <amodra@gmail.com>
* cgen/basic-modes.h: Include stdint.h in place of bfd_stdint.h.
* elf/nfp.h: Likewise.
* opcode/aarch64.h: Likewise.
* opcode/cgen.h: Likewise.
* opcode/nfp.h: Likewise.
* opcode/ppc.h: Likewise.
2021-03-29 Alan Modra <amodra@gmail.com>
* opcode/aarch64.h (alias_opcode_p): Simplify boolean expression.
(opcode_has_alias, pseudo_opcode_p, optional_operand_p): Likewise.
(opcode_has_special_coder): Likewise.
2021-03-29 Alan Modra <amodra@gmail.com>
* opcode/aarch64.h (aarch64_opcode_encode): Correct prototype.
2021-03-25 Nick Alcock <nick.alcock@oracle.com>
PR libctf/27628
* ctf-api.h: Fix some indentation.
(CTF_SET_STID): Always do an unsigned shift, even if STID is
signed.
2021-03-19 H.J. Lu <hongjiu.lu@intel.com>
* elf/common.h (EM_INTEL205): Renamed to ...
(EM_INTELGT): This.
2021-03-16 Nick Clifton <nickc@redhat.com>
* coff/internal.h (struct internal_auxent): Fix a couple of typos
in comment describing the x_fname field.
2021-03-16 Kuan-Lin Chen <kuanlinchentw@gmail.com>
* opcode/riscv-opc.h: Support zba, zbb and zbc extensions.
* opcode/riscv.h (riscv_insn_class): Add INSN_CLASS_ZB*.
2021-03-12 Frederic Cambus <fred@statdns.com>
* elf/common.h (NT_NETBSD_PAX, NT_NETBSD_PAX_MPROTECT)
(NT_NETBSD_PAX_NOMPROTECT, NT_NETBSD_PAX_GUARD, NT_NETBSD_PAX_NOGUARD)
(NT_NETBSD_PAX_ASLR, NT_NETBSD_PAX_NOASLR): Define.
2021-03-12 Clément Chigot <clement.chigot@atos.net>
* coff/internal.h (struct internal_aouthdr): Add new fields.
* coff/rs6000.h (AOUTHDRÃ): Add new fields.
* coff/rs6k64.h (struct external_filehdr): Likewise.
* coff/xcoff.h (_TDATA), _TBSS): New defines
(RS6K_AOUTHDR_TLS_LE, RS6K_AOUTHDR_RAS, RS6K_AOUTHDR_ALGNTDATA,
RS6K_AOUTHDR_SHR_SYMTAB, RS6K_AOUTHDR_FORK_POLICY,
RS6K_AOUTHDR_FORK_COR): New defines.
(XMC_TU): Removed.
(XMC_UL): New define.
2021-03-12 Clément Chigot <clement.chigot@atos.net>
* coff/xcoff.h (R_RTB): Remove.
(R_TRL): Fix value.
2021-03-05 Craig Blackmore <craig.blackmore@embecosm.com>
Andrew Burgess <andrew.burgess@embecosm.com>
* elf/common.h (NT_RISCV_CSR): Define.
2021-03-05 Craig Blackmore <craig.blackmore@embecosm.com>
Andrew Burgess <andrew.burgess@embecosm.com>
* elf/common.h (NT_GDB_TDESC): Define.
2021-03-03 Alan Modra <amodra@gmail.com>
* coff/internal.h: Delete obsolete relocation defines. Move used
relocation defines..
* coff/i386.h: ..to here..
* coff/ti.h: ..and here..
* coff/x86_64.h: ..and here..
* coff/z80.h: ..and here..
* coff/z8k.h: ..and here.
2021-03-02 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (CTF_LINK_SHARE_DUPLICATED): Note that this might
merely change how much deduplication is done.
2021-03-01 Alan Modra <amodra@gmail.com>
Fangrui Song <maskray@google.com>
* bfdlink.h (struct bfd_link_info): Add start_stop_gc.
2021-02-21 Alan Modra <amodra@gmail.com>
* bfdlink.h (struct bfd_link_info): Add warn_multiple_definition.
2021-02-17 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (ctf_arc_lookup_symbol_name): New.
(ctf_lookup_by_symbol_name): Likewise.
2021-02-19 Nelson Chu <nelson.chu@sifive.com>
PR 27158
* opcode/riscv.h: Updated encoding macros.
2021-02-18 Nelson Chu <nelson.chu@sifive.com>
* opcode/riscv.h: Moved stuff and make the file tidy.
2021-02-15 Andreas Krebbel <krebbel@linux.ibm.com>
* opcode/s390.h (enum s390_opcode_cpu_val): Add
S390_OPCODE_ARCH14.
2021-02-08 Mike Frysinger <vapier@gentoo.org>
* opcode/tic54x.h (mmregs): Rename to ...
(tic54x_mmregs): ... this.
(regs): Rename to ...
(tic54x_regs): ... this.
(condition_codes): Rename to ...
(tic54x_condition_codes): ... this.
(cc2_codes): Rename to ...
(tic54x_cc2_codes): ... this.
(status_bits): Rename to ...
(tic54x_status_bits): ... this.
(cc3_codes): Rename to ...
(tic54x_cc3_codes): ... this.
(misc_symbols): Rename to ...
(tic54x_misc_symbols): ... this.
2021-02-05 Nelson Chu <nelson.chu@sifive.com>
PR 27348
* opcode/riscv.h: Remove obsolete OP_*CUSTOM_IMM.
2021-02-05 Nelson Chu <nelson.chu@sifive.com>
PR 27348
* opcode/riscv-opc.h: Remove obsolete Xcustom support.
2021-01-27 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (ECTF_NONAME): New.
(ECTF_NERR): Adjust.
2021-01-26 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (CTF_LINK_NO_FILTER_REPORTED_SYMS): New.
2021-02-04 Nelson Chu <nelson.chu@sifive.com>
* opcode/riscv-opc.h: Removed macros for zb* extensions.
* opcode/riscv.h (riscv_insn_class): Removed INSN_CLASS_ZB*.
2021-01-15 Nelson Chu <nelson.chu@sifive.com>
* opcode/riscv.h: Indent and GNU coding standards tidy,
also aligned the code.
2021-01-15 Nelson Chu <nelson.chu@sifive.com>
* elf/riscv.h: Comments tidy and improvement.
* opcode/riscv-opc.h: Likewise.
* opcode/riscv.h: Likewise.
2021-01-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* opcode/aarch64.h (AARCH64_FEATURE_CSRE): Delete.
(aarch64_opnd): Delete AARCH64_OPND_CSRE_CSR.
2021-01-09 Nick Clifton <nickc@redhat.com>
* 2.36 release branch crated.
2021-01-07 Philipp Tomsich <prt@gnu.org>
* opcode/riscv-opc.h: Added MATCH_PAUSE, MASK_PAUSE and DECLARE_INSN
for pause hint instruction.
* opcode/riscv.h (enum riscv_insn_class): Added INSN_CLASS_ZIHINTPAUSE.
2021-01-07 Claire Xenia Wolf <claire@symbioticeda.com>
Jim Wilson <jimw@sifive.com>
Andrew Waterman <andrew@sifive.com>
Maxim Blinov <maxim.blinov@embecosm.com>
Kito Cheng <kito.cheng@sifive.com>
Nelson Chu <nelson.chu@sifive.com>
* opcode/riscv-opc.h: Added MASK/MATCH/DECLARE_INSN for ZBA/ZBB/ZBC.
* opcode/riscv.h (riscv_insn_class): Added INSN_CLASS_ZB*.
(enum riscv_isa_spec_class): Added ISA_SPEC_CLASS_DRAFT for the
frozen extensions.
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (CTF_MN_RECURSE): New.
(ctf_member_next): Add flags argument.
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (ECTF_INCOMPLETE): New.
(ECTF_NERR): Adjust.
2021-01-01 Nicolas Boulenguez <nicolas@debian.org>
* coff/internal.h: Correct comment spelling.
* coff/sym.h: Likewise.
* opcode/aarch64.h: Likewise.
2021-01-01 Alan Modra <amodra@gmail.com>
Update year range in copyright notice of all files.
For older changes see ChangeLog-2020
Copyright (C) 2021 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
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