9280 Commits

Author SHA1 Message Date
Alan Modra
84bc4ba816 obj-evax.c tidy
This started out as fixing decode_16, which used a char to index a 256
byte decodings array.  When char is signed that could result in an out
of bounds array access.  The rest of the patch is for consistency and
just general cleanup.

	* config/obj-evax.c (crc32, encode_32, encode_16, decode_16):
	Remove unnecessary prototypes.
	(number_of_codings): Delete, use ARRAY_SIZE instead throughout.
	(codings, decodings): Make arrays of unsigned char.
	(crc32): Use unsigned variables.  Delete unnecessary mask.
	(encode_32, encode_16): Return unsigned char*, and make static
	buffer an unsigned char array.
	(decode_16): Make arg an unsigned char*.  Remove useless casts.
	(shorten_identifier): Use unsigned char crc_chars.
	(is_truncated_identifier): Make ptr an unsigned char*.
2019-12-12 21:58:23 +10:30
Andre Vieira
24f19ccb89 [gas][arm] Add -mwarn-restrict-it
Add a -m{no-}warn-restrict-it option to control IT related warnings in
ARMv8-A and ARMv8-R.  This is disabled by default.

Committed on behalf of Wilco Dijkstra.

gas/ChangeLog:
2019-12-11  Wilco Dijkstra  <wdijkstr@arm.com>

	* config/tc-arm.c (warn_on_restrict_it): Add new variable.
	(it_fsm_post_encode): Check warn_on_restrict_it.
	(arm_option_table): Add -mwarn-restrict-it/-mno-warn-restrict-it.
	* testsuite/gas/arm/armv8-2-fp16-scalar-bad.d: Add -mwarn-restrict-it.
	* testsuite/gas/arm/armv8-2-fp16-scalar-bad-ext.d: Likewise.
	* testsuite/gas/arm/armv8-a-bad.d: Likewise.
	* testsuite/gas/arm/armv8-a-it-bad.d: Likewise.
	* testsuite/gas/arm/armv8-r-bad.d: Likewise.
	* testsuite/gas/arm/armv8-r-it-bad.d: Likewise.
	* testsuite/gas/arm/sp-pc-validations-bad-t-v8a.d: Likewise.
	* testsuite/gas/arm/udf.d: Likewise.
2019-12-11 15:53:26 +00:00
Jan Beulich
569d50f1c6 x86: further refine SSE check (SSE4a, SHA, GFNI)
In  ("x86: extend SSE check to PCLMULQDQ, AES, and GFNI insns") I went
both a little too far and not quite far enough:
- GFNI insns also have AVX512 variants, which also shouldn't get
  diagnosed,
- SSE4a insns should get diagnosed just like SSE4.x ones,
- SHA insns should get diagnosed just like PCLMULQDQ or AES ones.
2019-12-11 09:42:29 +01:00
Andre Vieira
0e7aaa728d [gas][arm] Set context table for '.arch_extension'
This patch fixes .arch_extension behaviour.

Currently, context table for '.arch_extension' is only set while
"-march" processing, but it is not set while .arch processing,
so following code is rejected

  .syntax unified
  .thumb
  .arch armv8.1-m.main
  .arch_extension mve.fp

  unless -march=armv8.1-m.main is given.

Committing on behalf of Vladimir Murzin

gas/ChangeLog:
2019-12-10  Vladimir Murzin  <vladimir.murzin@arm.com>

	* config/tc-arm.c (s_arm_arch): Set selected_ctx_ext_table.
	* testsuite/gas/arm/mve-arch-ext.s: New.
	* testsuite/gas/arm/mve-arch-ext.d: New.
2019-12-10 16:10:17 +00:00
Jan Beulich
7456d03d5b x86/Intel: fold "xmmword" with "oword"
These are full aliases of one another, so there's no real need to use
distinct O_md* values for them.
2019-12-09 13:32:11 +01:00
Jan Beulich
f2f5811f76 x86/Intel: support "mmword ptr"
This is an alias of "qword ptr", commonly used with MMX insns.

At this occasion also test (alongside the newly supported "mmword")
- "zmmword" used as expression,
- PADDB with "oword ptr" (aliasing "xmmword ptr").
2019-12-09 13:31:39 +01:00
Jan Beulich
164d49cb1c x86/Intel: fix "near ptr" / "far ptr" handling
Commit dc2be329b950 ("i386: Only check suffix in instruction mnemonic")
broke rejecting of these for floating point insns. Fix this by setting
the "byte" operand attribute, which will now (again) cause an error.

Furthermore the diagnostic for the "far ptr" case in general and for the
"near ptr" case in the non-float cases became "invalid instruction
suffix" instead of the intended "operand size mismatch". Fix this by
also setting the "tbyte" operand attribute (no insn template accepts
both byte and tbyte operands).
2019-12-09 13:31:07 +01:00
Jan Beulich
a8f4f6b9bc x86/Intel: drop pointless suffix setting for "tbyte ptr"
There are extremely few insns accepting "tbyte ptr" operand, so the
"tbyte" operand flag checking done by match_operand_size() is already
sufficient; the setting of the suffix has become meaningless anyway
with dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
Fold the code with that setting the "byte" operand flag to force an
error (no insn at all accepts both "byte ptr" and tbyte ptr" operands,
except for AnySize ones where the two (conflicting) recorded types
don't matter (operand_size_match() doesn't call match_operand_size() in
this case).
2019-12-09 13:29:44 +01:00
Jan Beulich
4cbda994e6 x86/Intel: drop pointless suffix setting for "fword ptr"
No floating point insn accepts an "fword ptr" operand, so the "fword"
operand flag checking done by match_mem_size() is already sufficient;
the setting of the suffix has become meaningless anyway with
dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
2019-12-09 13:29:14 +01:00
Jan Beulich
3740438712 x86/Intel: drop pointless special casing of LxS
LDS et al don't accept "word ptr" operands anyway, as per their insn
templates. Hence there's no need to special case this here; the check
has become dysfunctional anyway by dc2be329b950 ("i386: Only check
suffix in instruction mnemonic").
2019-12-09 13:28:43 +01:00
Alan Modra
6f765336bb aarch64*-*-*ilp32 gas tests
The new pac_negate_ra_state test adds yet another failure on aarch64
ipl32 targets.  This patch fixes that particular problem and a few
more that are trivial to fix.

	* testsuite/gas/aarch64/bfloat16.d: Match 32-bit and 64-bit output.
	* testsuite/gas/aarch64/dgh.d: Likewise.
	* testsuite/gas/aarch64/f32mm.d: Likewise.
	* testsuite/gas/aarch64/f64mm.d: Likewise.
	* testsuite/gas/aarch64/i8mm.d: Likewise.
	* testsuite/gas/aarch64/pac_ab_key.d: Likewise.
	* testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.
	* testsuite/gas/aarch64/reloc-prel_g0.d: Likewise.
	* testsuite/gas/aarch64/reloc-prel_g0_nc.d: Likewise.
	* testsuite/gas/aarch64/reloc-prel_g1.d: Likewise.
	* testsuite/gas/aarch64/sve-bfloat-movprfx.d: Likewise.
	* testsuite/gas/aarch64/sve-movprfx-mm.d: Likewise.
	* testsuite/gas/aarch64/sve2.d: Likewise.
2019-12-08 22:03:53 +10:30
Kyrylo Tkachov
e8dc9b5bfd [gas] Implement .cfi_negate_ra_state directive
This patch implements the .cfi_negate_ra_state to be consistent with
LLVM (https://reviews.llvm.org/D50136). The relevant DWARF code DW_CFA_AARCH64_negate_ra_state
is multiplexed on top of DW_CFA_GNU_window_save, as per
https://gcc.gnu.org/ml/gcc-patches/2017-08/msg00753.html

I believe this is the simplest patch implementing this and is needed to
allow users to build, for example, the Linux kernel with Armv8.3-A
pointer authentication support with Clang while using gas as the
assembler, which is a common usecase.

gas/
2019-12-06  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

    * dw2gencfi.c (cfi_pseudo_table): Add cfi_negate_ra_state.
    * testsuite/gas/aarch64/pac_negate_ra_state.s: New file.
    * testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.
2019-12-06 10:46:32 +00:00
Jan Beulich
2dc4b12fcd Arm64: simplify Crypto arch extension handling
This, at the assembler level, is just a "brace" feature covering both
AES and SHA2. Hence there's no need for it to have a separate feature
flag, freeing up a bit for future re-use. Along these lines there are
also a number of dead definitions/variables in the opcode table file.
2019-12-05 08:44:22 +01:00
Jan Beulich
d4340f89ec Arm64: correct "sha3" arch-extension directive handling
SHA2 is a prereq to SHA3, not part of it aiui. Hence disabling the
latter should not also disable the former.

In the course of adding respective tests also do away with the
duplication of crypto.d's contents in crypto-directive.d.
2019-12-05 08:43:03 +01:00
Jan Beulich
0ba59a2940 x86-64: accept 64-bit LFS/LGS/LSS forms with suffix or operand size specifier
Since we accept these without suffix / operand size specifier, we should
also do so with one. (The fact that we unilaterally accept these, other
than far branches, rather than limiting them to Intel64 mode, will be
taken care of later on.)

Also take the opportunity and make sure "lfs <reg>, tbyte ptr <mem>"
et al get rejected outside of 64-bit mode. This became broken by
dc2be329b950 ("i386: Only check suffix in instruction mnemonic").
Furthermore cover lgdt et al in the Intel syntax handling as well, which
continued to work after said commit just by coincidence.
2019-12-04 10:45:17 +01:00
Jan Beulich
d488367a42 x86-64/Intel: fix CALL/JMP with dword operand
While dc2be329b950 ("i386: Only check suffix in instruction mnemonic")
has made the assembler accept these in the first place (they were wrongly
rejected before), the generated code was still wrong in that it lacked
an operand size override. (In 64-bit code, other than in 16- and 32-bit
ones, CALL and JMP with memory operands are all entirely unambiguous: No
operand size can have two meanings.)
2019-12-04 10:44:27 +01:00
Jan Beulich
319ff62c8a x86: consolidate tracking of MMX register use
Just like for XMM/YMM/ZMM don't key this to any Cpu* flags. Instead
include the two special insns (not having register operands) explicitly.
2019-12-04 10:43:50 +01:00
Jan Beulich
77ad80922b x86/Intel: extend MOVDIRI testing
Test also memory operands with operand size specifier, which was broken
prior to dc2be329b950 ("i386: Only check suffix in instruction
mnemonic"), due to the template not permitting any suffixes. Note that
this uncovered a disassembler issue, which is being fixed here as well.
2019-12-04 10:41:43 +01:00
Jan Beulich
13e600d0f5 x86: make sure all PUSH/POP honor DefaultSize
While segment registers are registers, their use doesn't allow sizing
of insns without suffix / explicit operand size specifier. Prevent
PUSH and POP of segment registers from entering that path, instead
allowing them to observe the stackop_size setting just like other
PUSH/POP and alike do.
2019-12-04 10:40:40 +01:00
Jan Beulich
3036c89919 x86: drop some stray/bogus DefaultSize
Insns permitting only GPR operands (and hence implicit sizing when
there's no suffix) don't ever have their DefaultSize attribute
inspected, so it shouldn't be there in the first place.

Additionally XBEGIN is like JMP, not CALL, and hence shouldn't be
converted to 32-bit operand size in .code16gcc mode. While the same is
true for SYSRET, it permitting more than one suffix makes it FLDENV-
like, and hence rather than dropping the attribute, for now add it to
the exclusion list to avoid it getting an operand size prefix emitted
in .code16gcc mode. (This will be dealt with later, perhaps together
with FLDENV and friends.)
2019-12-04 10:40:02 +01:00
Andrew Burgess
0ac2b354ee gas/riscv: Produce version 3 DWARF CIE by default
The flag controlling the default DWARF CIE version to produce now
starts with the value -1.  This can be modified with the command line
flag as before, but after command line flag processing, in
md_after_parse_args targets can, if the global still has the value -1,
override this value.  This gives a target specific default.

If a CIE version is not select either by command line flag, or a
target specific default, then some new code in dwarf2_init now select
a global default.  This remains as version 1 to match previous
behaviour.

This RISC-V has a target specific default of version provided, this
make the return column uleb128, which means we can use all DWARF
registers include CSRs.

I chose to switch to version 3 rather than version 4 as this is most
similar to the global default (version 1).  Switching to version 4
adds additional columns to the CIE header.

gas/ChangeLog:

	* as.c (flag_dwarf_cie_version): Change initial value to -1, and
	update comment.
	* config/tc-riscv.c (riscv_after_parse_args): Set
	flag_dwarf_cie_version if it has not already been set.
	* dwarf2dbg.c (dwarf2_init): Initialise flag_dwarf_cie_version if
	needed.
	* testsuite/gas/riscv/default-cie-version.d: New file.
	* testsuite/gas/riscv/default-cie-version.s: New file.

ld/ChangeLog:

	* testsuite/ld-elf/eh5.d: Accept version 3 DWARF CIE.

Change-Id: Ibbfe8f0979fba480bf0a359978b09d2b3055555e
2019-11-28 00:03:05 +00:00
Andrew Burgess
22eb4a0617 gas: Check for overflow on return column in version 1 CIE DWARF
In version 1 of DWARF CIE format, the return register column is just a
single byte.  For targets with large numbers of DWARF registers, any
use of a register with a high number for the return column
will (currently) silently overflow giving incorrect DWARF.

This commit adds an error when the overflow occurs.

gas/ChangeLog:

	* dw2gencfi.c (output_cie): Error on return column overflow.
	* testsuite/gas/riscv/cie-rtn-col-1.d: New file.
	* testsuite/gas/riscv/cie-rtn-col-3.d: New file.
	* testsuite/gas/riscv/cie-rtn-col.s: New file.

Change-Id: I1809f739ba7771737ec012807f0260e1a3ed5e64
2019-11-28 00:03:05 +00:00
Andrew Burgess
4762fe621e binutils/gas/riscv: Add DWARF register numbers for CSRs
This commit gives DWARF register numbers to the RISC-V CSRs inline
with the RISC-V ELF specification here:

  https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md

The CSRs are defined being numbered from 4096 to 8191.

This adds support to the assembler, required in order to reference
CSRs in, for example .cfi directives.

I have then extended dwarf.c in order to support printing CSR names in
the dumped DWARF output.  As the CSR name space is quite large and
only sparsely populated, I have provided a new function to perform
RISC-V DWARF register name lookup which uses a switch statement rather
than the table base approach that other architectures use.

Any CSR that does not have a known name will return a name based on
'csr%d' with the %d being replaced by the offset of the CSR from 4096.

gas/ChangeLog:

	* config/tc-riscv.c (tc_riscv_regname_to_dw2regnum): Lookup CSR
	names too.
	* testsuite/gas/riscv/csr-dw-regnums.d: New file.
	* testsuite/gas/riscv/csr-dw-regnums.s: New file.

binutils/ChangeLog:

	* dwarf.c (regname_internal_riscv): New function.
	(init_dwarf_regnames_riscv): Use new function.

Change-Id: I3f70bc24fa8b3c75744e6775eeeb87db70c7ecfb
2019-11-28 00:03:05 +00:00
Andrew Burgess
b7379eadda gas/riscv: Remove unneeded structure
We build a hash table of all register classes and numbers.  The hash
key is the register name and the hash value is the class and number
encoded into a single value, which is of type 'void *'.

When we pull the values out of the hash we cast them to be a pointer
to a structure, however, we never access the fields of that structure,
we just decode the register class and number from the pointer value
itself.

This commit removes the structure and treats the encoded class and
number as a 'void *' during hash lookup.

gas/ChangeLog:

	* config/tc-riscv.c (struct regname): Delete.
	(hash_reg_names): Handle value as 'void *'.

Change-Id: Ie7d8f46ca3798f56f4af94395279de684f87f9cc
2019-11-28 00:03:02 +00:00
Andrew Pinski
0a821c4f6d Fix "psb CSYNC" and "bti C".
psb CYSNC was not finding that CSYNC was a correct spelling.
The problem was upper case version was being put in the
wrong hashtable.  This fixes the problem by using the
correct hashtable.
Also adds testcases for the upper case versions.

        * config/tc-aarch64.c (md_begin): Use correct
        hash table for uppercase version of hint.
        * testsuite/gas/aarch64/system-2.s: Extend psb case to uppercase.
        * testsuite/gas/aarch64/system-2.d: Update.

Change-Id: If43f8b85cacd24840d596c3092b0345e5f212766
2019-11-25 18:27:26 +00:00
Christian Eggers
618265039f Introduce new section flag: SEC_ELF_OCTETS
All symbols, sizes and relocations in this section are octets instead of
bytes.  Required for DWARF debug sections as DWARF information is
organized in octets, not bytes.

bfd/
	* section.c (struct bfd_section): New flag SEC_ELF_OCTETS.
	* archures.c (bfd_octets_per_byte): New parameter sec.
	If section is not NULL and SEC_ELF_OCTETS is set, one octet es
	returned [ELF targets only].
	* bfd.c (bfd_get_section_limit): Provide section parameter to
	bfd_octets_per_byte.
	* bfd-in2.h: regenerate.
	* binary.c (binary_set_section_contents): Move call to
	bfd_octets_per_byte into section loop. Provide section parameter
	to bfd_octets_per_byte.
	* coff-arm.c (coff_arm_reloc): Provide section parameter
	to bfd_octets_per_byte.
	* coff-i386.c (coff_i386_reloc): likewise.
	* coff-mips.c (mips_reflo_reloc): likewise.
	* coff-x86_64.c (coff_amd64_reloc): likewise.
	* cofflink.c (_bfd_coff_link_input_bfd): likewise.
	(_bfd_coff_reloc_link_order): likewise.
	* elf.c (_bfd_elf_section_offset): likewise.
	(_bfd_elf_make_section_from_shdr): likewise.
	Set SEC_ELF_OCTETS for sections with names .gnu.build.attributes,
	.debug*, .zdebug* and .note.gnu*.
	* elf32-msp430.c (rl78_sym_diff_handler): Provide section parameter
	to bfd_octets_per_byte.
	* elf32-nds.c (nds32_elf_get_relocated_section_contents): likewise.
	* elf32-ppc.c (ppc_elf_addr16_ha_reloc): likewise.
	* elf32-pru.c (pru_elf32_do_ldi32_relocate): likewise.
	* elf32-s12z.c (opru18_reloc): likewise.
	* elf32-sh.c (sh_elf_reloc): likewise.
	* elf32-spu.c (spu_elf_rel9): likewise.
	* elf32-xtensa.c (bfd_elf_xtensa_reloc): likewise
	* elf64-ppc.c (ppc64_elf_brtaken_reloc): likewise.
	(ppc64_elf_addr16_ha_reloc): likewise.
	(ppc64_elf_toc64_reloc): likewise.
	* elflink.c (bfd_elf_final_link): likewise.
	(bfd_elf_perform_complex_relocation): likewise.
	(elf_fixup_link_order): likewise.
	(elf_link_input_bfd): likewise.
	(elf_link_sort_relocs): likewise.
	(elf_reloc_link_order): likewise.
	(resolve_section): likewise.
	* linker.c (_bfd_generic_reloc_link_order): likewise.
	(bfd_generic_define_common_symbol): likewise.
	(default_data_link_order): likewise.
	(default_indirect_link_order): likewise.
	* srec.c (srec_set_section_contents): likewise.
	(srec_write_section): likewise.
	* syms.c (_bfd_stab_section_find_nearest_line): likewise.
	* reloc.c (_bfd_final_link_relocate): likewise.
	(bfd_generic_get_relocated_section_contents): likewise.
	(bfd_install_relocation): likewise.
	For section which have SEC_ELF_OCTETS set, multiply output_base
	and output_offset with bfd_octets_per_byte.
	(bfd_perform_relocation): likewise.
include/
	* coff/ti.h (GET_SCNHDR_SIZE, PUT_SCNHDR_SIZE, GET_SCN_SCNLEN),
	(PUT_SCN_SCNLEN): Adjust bfd_octets_per_byte calls.
binutils/
	* objdump.c (disassemble_data): Provide section parameter to
	bfd_octets_per_byte.
	(dump_section): likewise
	(dump_section_header): likewise. Show SEC_ELF_OCTETS flag if set.
gas/
	* as.h: Define SEC_OCTETS as SEC_ELF_OCTETS if OBJ_ELF.
	* dwarf2dbg.c: (dwarf2_finish): Set section flag SEC_OCTETS for
	.debug_line, .debug_info, .debug_abbrev, .debug_aranges, .debug_str
	and .debug_ranges sections.
	* write.c (maybe_generate_build_notes): Set section flag
	SEC_OCTETS for .gnu.build.attributes section.
	* frags.c (frag_now_fix): Don't divide by OCTETS_PER_BYTE if
	SEC_OCTETS is set.
	* symbols.c (resolve_symbol_value): Likewise.
ld/
	* ldexp.c (fold_name): Provide section parameter to
	bfd_octets_per_byte.
	* ldlang (init_opb): New argument s. Set opb_shift to 0 if
	SEC_ELF_OCTETS for the current section is set.
	(print_input_section): Pass current section to init_opb.
	(print_data_statement,print_reloc_statement,
	print_padding_statement): Likewise.
	(lang_check_section_addresses): Call init_opb for each
	section.
	(lang_size_sections_1,lang_size_sections_1,
	lang_do_assignments_1): Likewise.
	(lang_process): Pass NULL to init_opb.
2019-11-25 14:32:19 +10:30
Christian Eggers
e2b9a97eda Reverts patches providing octet support in dwarf
Reverts "dwarf2: Align relocation within .debug_line section"
	commit 204f543cae7a5dc908264b49d558191d0ceb989c,
Reverts "dwarf2: Pad size of .debug_line section."
	commit 145c4477d239fef4e31a457ff8a1ba7153e9a448,
Reverts "dwarf2: Use octets for .debug_line prologue"
	commit 38c24f42c97af59ad83505ed735e689c63d3ca45,
Mostly reverts "dwarf2: Use octets for dwarf2 headers"
	commit 7235427998571b6d8267e7ac72a52d7b082f4c2b,
Mostly reverts "Symbols with octets value"
	commit d18d199917337537713f9fc4b7ae4d6568f740cf.

	* dwarf2dbg.c (out_set_addr): Revert 2019-03-13 change.
	(out_debug_line, out_debug_aranges, out_debug_info): Likewise.
	* symbols.h (symbol_set_value_now_octets, symbol_octets_p): Remove.
	* symbols.c (struct symbol_flags): Remove member sy_octets.
	(symbol_temp_new_now_octets): Don't set symbol_flags::sy_octets.
	(resolve_symbol_value): Revert: Return octets instead of bytes if
	sy_octets is set.
	(symbol_set_value_now_octets): Remove.
	(symbol_octets_p): Remove.
2019-11-25 14:32:20 +10:30
Mihail Ionescu
8b301fbb61 Arm: Change CRC from fpu feature to archititectural extension
This patch changes the CRC extension to use the core feature bits instead
of the coproc/fpu feature bits.
CRC is not an fpu feature and it causes issues with the new fpu reset
patch (f439988037a589de3798f44e7268301adaec21a9). CRC can be set using
the '.arch_extension' directive, which sets bits in the coproc bitfield. When
a '.fpu' directive is encountered, the CRC feature bit gets removed and
there is no way to set it back using '.fpu'.
With this patch, CRC will be marked in the feature core bits, which prevents
it from getting removed when setting/changing the fpu options.

gas/ChangeLog:

	* config/tc-arm.c (arm_ext_crc): New.
	(crc_ext_armv8): Remove.
	(insns): Rename crc_ext_armv8 to arm_ext_crc.
	(arm_cpus): Replace CRC_EXT_ARMV8 with ARM_EXT2_CRC.
	(armv8a_ext_table, armv8r_ext_table,
	arm_option_extension_value_table): Redefine the crc
	extension in terms of ARM_EXT2_CRC.
	* gas/testsuite/gas/arm/crc-ext.s: New.
	* gas/testsuite/gas/arm/crc-ext.d: New.

include/ChangeLog:

	* opcode/arm.h (ARM_EXT2_CRC): New extension feature
	to replace CRC_EXT_ARMV8.
	(CRC_EXT_ARMV8): Remove and mark bit as unused.
	(ARM_ARCH_V8A_CRC, ARM_ARCH_V8_1A, ARM_ARCH_V8_2A,
	ARM_ARCH_V8_3A, ARM_ARCH_V8_4A, ARM_ARCH_V8_5A,
	ARM_ARCH_V8_6A): Redefine using ARM_EXT2_CRC instead of
	CRC_EXT_ARMV8.

opcodes/ChangeLog:

	* opcodes/arm-dis.c (arm_opcodes, thumb32_opcodes):
	Change the coproc CRC conditions to use the extension
	feature set, second word, base on ARM_EXT2_CRC.
2019-11-22 13:47:26 +00:00
Alan Modra
94c9b9db4b PR24944, gas doesn't read enough digits when parsing a floating point number
PR 24944
	* atof-generic.c (atof_generic): Increase decimal guard digits.
	* testsuite/gas/i386/fp.s: Add more tests.
	* testsuite/gas/i386/fp.d: Update.
2019-11-20 21:59:33 +10:30
Andrew Burgess
66f8b2cbbb gas: Add --gdwarf-cie-version command line flag
Add a flag to control the version of CIE that is generated.  By
default gas produces CIE version 1, and this continues to be the
default after this patch.

However, a user can now provide --gdwarf-cie-version=NUMBER to switch
to either version 3 or version 4 of CIE, version 2 was never released,
and so causes an error as does any number less than 1 or greater than
4.

Producing version 4 CIE requires two new fields to be added to the
CIE, an address size field, and an segment selector field.  For a flat
address space the DWARF specification indicates that the segment
selector should be 0, and the address size fields just contains the
address size in bytes.  For now we support 4 or 8 byte addresses, and
the segment selector is always produced as 0.  At some future time we
might need to allow targets to override this.

gas/ChangeLog:

	* as.c (parse_args): Parse --gdwarf-cie-version option.
	(flag_dwarf_cie_version): New variable.
	* as.h (flag_dwarf_cie_version): Declare.
	* dw2gencfi.c (output_cie): Switch from DW_CIE_VERSION to
	flag_dwarf_cie_version.
	* doc/as.texi (Overview): Document --gdwarf-cie-version.
	* NEWS: Likewise.
	* testsuite/gas/cfi/cfi.exp: Add new tests.
	* testsuite/gas/cfi/cie-version-0.d: New file.
	* testsuite/gas/cfi/cie-version-1.d: New file.
	* testsuite/gas/cfi/cie-version-2.d: New file.
	* testsuite/gas/cfi/cie-version-3.d: New file.
	* testsuite/gas/cfi/cie-version-4.d: New file.
	* testsuite/gas/cfi/cie-version.s: New file.

include/ChangeLog:

	* dwarf2.h (DW_CIE_VERSION): Delete.

Change-Id: I9de19461aeb8332b5a57bbfe802953d0725a7ae8
2019-11-18 10:30:21 +00:00
Jan Beulich
0cfa3eb352 x86: fold individual Jump* attributes into a single Jump one
..., taking just 3 bits instead of 5. No two of them are used together.
2019-11-14 08:47:44 +01:00
Jan Beulich
6f2f06bea8 x86: make JumpAbsolute an insn attribute
... instead of an operand one: There's only ever one operand here
anyway.
2019-11-14 08:47:03 +01:00
Jan Beulich
601e856422 x86: make AnySize an insn attribute
... instead of an operand one. Which operand it applies to can be
determined from other operand properties, but as it turns out the only
place it is actually used at doesn't even need further qualification.
2019-11-14 08:46:19 +01:00
Jan Beulich
db4e407b53 x86/Intel: correct CMPSD test cases' regexp closing paren placement
The CMPS test case derivation from their MOVS counterparts I did in
d241b91073 ("x86/Intel: correct MOVSD and CMPSD handling") ended up
with misplaced closing parentheses in som regexps. Correct this.
2019-11-14 08:45:26 +01:00
Jan Beulich
b15384304b x86/Intel: extend MOVSD/CMPSD testsuite coverage
This is still in the context of PR/gas 25167.
2019-11-14 08:44:57 +01:00
Jim Wilson
7722d40a9c RISC-V: Support the INSN_CLASS.*F.* classes for .insn directive.
We have to enable the f extension through -march or ELF attribute if we use the
FPR in .insn directive.  The behavior is same as the riscv_opcodes.

	2019-11-12  Nelson Chu  <nelson.chu@sifive.com>
	opcodes/
	* riscv-opc.c (riscv_insn_types): Replace the INSN_CLASS_I with
	INSN_CLASS_F and the INSN_CLASS_C with INSN_CLASS_F_AND_C if we
	use the floating point register (FPR).

	gas/
	* testsuite/gas/riscv/insn.d: Add the f extension to -march option.

Change-Id: I4f59d04c82673ef84c56ecd2659ad8ce164dd626
2019-11-12 16:13:00 -08:00
Mihail Ionescu
ef8f595f73 [gas][arm] Enable VLDM, VSTM, VPUSH, VPOP for MVE
This patch enables a few instructions for Armv8.1-M MVE. Currently VLDM,
VSTM, VSTR, VLDR, VPUSH and VPOP are enabled only when the Armv8-M
Floating-point Extension is enabled.  According to the ARMv8.1-M ARM,
section A.1.4.2[1], they can be enabled by having "Armv8-M Floating-point
Extension and/or Armv8.1-M MVE".

[1]https://developer.arm.com/docs/ddi0553/bh/armv81-m-architecture-reference-manual

2019-11-12  Mihail Ionescu  <mihail.ionescu@arm.com>

	* config/tc-arm.c (do_vfp_nsyn_push): Move in order to enable it for
	both fpu_vfp_ext_v1xd and mve_ext and add call to the aliased vstm
	instruction for mve_ext.
	(do_vfp_nsyn_pop): Move in order to enable it for both
	fpu_vfp_ext_v1xd and mve_ext and add call to the aliased vldm
	instruction for mve_ext.
	(do_neon_ldm_stm): Add fpu_vfp_ext_v1 and mve_ext checks.
	(insns): Enable vldm, vldmia, vldmdb, vstm, vstmia, vstmdb, vpop,
	vpush, and fldd, fstd, flds, fsts for arm_ext_v6t2 instead
	of fpu_vfp_ext_v1xd.
	* testsuite/gas/arm/v8_1m-mve.s: New.
	* testsuite/gas/arm/v8_1m-mve.d: New.
2019-11-12 14:01:10 +00:00
Mihail Ionescu
ce760a7620 [binutils][arm] Update the decoding of MVE VMOV, VMVN
This patch updates the decoding of the VMOV and VMVN instructions which depend on cmode.
Previously VMOV and VMVN with cmode 1101 were not allowed.
The cmode changes also required updating of the MVE conflict checking.
Now instructions with opcodes 0xef800d50 and 0xef800e70 correctly get decoded as VMOV
and VMVN, respectively.

2019-11-12  Mihail Ionescu  <mihail.ionescu@arm.com>

	* opcodes/arm-dis.c (mve_opcodes): Enable VMOV imm to vec with
	cmode 1101.
	(is_mve_encoding_conflict): Update cmode conflict checks for
	MVE_VMVN_IMM.

2019-11-12  Mihail Ionescu  <mihail.ionescu@arm.com>

	* gas/config/tc-arm.c (do_neon_mvn): Allow mve_ext cmode=0xd.
	* testsuite/gas/arm/mve-vmov-vmvn-vorr-vbic.s: New test.
	* testsuite/gas/arm/mve-vmov-vmvn-vorr-vbic.d: Likewise.
2019-11-12 14:01:04 +00:00
Mihail Ionescu
f439988037 [gas][arm] Make .fpu reset the FPU/Coprocessor feature bits
This patch is fixes the '.fpu' behaviour.
Currently, using '.fpu' resets the previously selected '.fpu' options (by overwriting them),
but does not reset previous FPU options selected by other means (ie. when using
'.arch_extension fp' in conjunction with '.fpu <x>', the FPU is not reset).

Example:
.arch armv8-a         @ SET BASE
.arch_extension fp    @ ADD FP-ARMV8
.fpu vfpv2            @ ADD (already existing bits, does not reset)
vfms.f32 s0, s1, s2   @ OK

.arch armv8-a         @ RESET
.fpu fp-armv8         @ ADD FP-ARMV8
vfms.f32 s0, s1, s2   @ OK
.fpu vfpv2            @ RESET to VFPV2
vfms.f32 s0, s1, s2   @ ERROR

After the patch this becomes:
.arch armv8-a         @ SET BASE
.arch_extension fp    @ ADD FP-ARMV8
.fpu vfpv2            @ RESET TO VFPV2
vfms.f32 s0, s1, s2   @ ERROR

.arch armv8-a         @ RESET
.fpu fp-armv8         @ ADD FP-ARMV8
vfms.f32 s0, s1, s2   @ OK
.fpu vfpv2            @ RESET to VFPV2
vfms.f32 s0, s1, s2   @ ERROR

gas/ChangeLog:

2019-11-11  Mihail Ionescu  <mihail.ionescu@arm.com>

        * config/tc-arm.c (s_arm_fpu): Clear selected_cpu fpu bits.
        (fpu_any): Remove OBJ_ELF guards.
        * gas/testsuite/gas/arm/fpu-rst.s: New.
        * gas/testsuite/gas/arm/fpu-rst.d: New.
        * gas/testsuite/gas/arm/fpu-rst.l: New.
2019-11-12 14:00:34 +00:00
Jan Beulich
51c8edf68b x86: fold EsSeg into IsString
EsSeg (a per-operand bit) is used with IsString (a per-insn attribute)
only. Extend the attribute to 2 bits, thus allowing to encode
- not a string insn,
- string insn with neither operand requiring use of %es:,
- string insn with 1st operand requiring use of %es:,
- string insn with 2nd operand requiring use of %es:,
which covers all possible cases, allowing to drop EsSeg.

The (transient) need to comment out the OTUnused #define did uncover an
oversight in the earlier OTMax -> OTNum conversion, which is being taken
care of here.
2019-11-12 09:09:31 +01:00
Jan Beulich
474da251bf x86: eliminate ImmExt abuse
Drop the remaining instances left in place by commit c3949f432f ("x86:
limit ImmExt abuse), now that we have a way to specify specific GPRs.

Take the opportunity and also introduce proper 16-bit forms of
applicable SVME insns as well as 1-operand forms of CLZERO.
2019-11-12 09:08:32 +01:00
Jan Beulich
75e5731b8f x86: introduce operand type "instance"
Special register "class" instances can't be combined with one another
(neither in templates nor in register entries), and hence it is not a
good use of resources (memory as well as execution time) to represent
them as individual bits of a bit field.

Furthermore the generalization becoming possible will allow
improvements to the handling of insns accepting only individual
registers as their operands.
2019-11-12 09:07:34 +01:00
Jan Beulich
91802f3cfe Arm64: SVE2's smaxp/sminp require operands 1 and 3 to be the same register
This is just like for their umaxp/uminp and fmaxp/fminp counterparts.
2019-11-11 13:28:35 +01:00
H.J. Lu
dc2be329b9 i386: Only check suffix in instruction mnemonic
We should check suffix in instruction mnemonic when matching instruction.
In Intel syntax, normally we check for memory operand size.  But the same
mnemonic with 2 different encodings can have the same memory operand
size and i.suffix is set to LONG_DOUBLE_MNEM_SUFFIX from memory operand
size in Intel syntax to distinguish them.  When there is no suffix in
mnemonic, we check LONG_DOUBLE_MNEM_SUFFIX in i.suffix for mnemonic
suffix.

gas/

	PR gas/25167
	* config/tc-i386.c (match_template): Don't check instruction
	suffix set from operand.
	* testsuite/gas/i386/code16.d: New file.
	* testsuite/gas/i386/code16.s: Likewise.
	* testsuite/gas/i386/i386.exp: Run code16.
	* testsuite/gas/i386/x86-64-branch-4.l: Updated.

opcodes/

	PR gas/25167
	* i386-opc.tbl: Remove IgnoreSize from cmpsd and movsd.
	* i386-tbl.h: Regenerated.
2019-11-08 09:31:17 -08:00
Jan Beulich
f74a630727 x86: convert RegMask and RegBND from bitfield to enumerator
This is to further shrink the operand type representation.
2019-11-08 09:06:24 +01:00
Jan Beulich
3528c362d9 x86: convert RegSIMD and RegMMX from bitfield to enumerator
This is to further shrink the operand type representation.
2019-11-08 09:05:36 +01:00
Jan Beulich
4a5c67ed84 x86: convert Control/Debug/Test from bitfield to enumerator
This is to further shrink the operand type representation.
2019-11-08 09:04:53 +01:00
Jan Beulich
00cee14fba x86: convert SReg from bitfield to enumerator
This is to further shrink the operand type representation.
2019-11-08 09:04:09 +01:00
Jan Beulich
bab6aec125 x86: introduce operand type "class"
Many operand types, in particular the various kinds of registers, can't
be combined with one another (neither in templates nor in register
entries), and hence it is not a good use of resources (memory as well as
execution time) to represent them as individual bits of a bit field.
2019-11-08 09:03:23 +01:00
Matthew Malcomson
1f4cd317b6 [gas][aarch64] Add the v8.6 Data Gathering Hint mnemonic [10/X]
Hi,

This patch is part of a series that adds support for Armv8.6-A
to binutils.

In this last patch, the new Data Gathering Hint mnemonic is introduced.

Committed on behalf of Mihail Ionescu.

gas/ChangeLog:

2019-11-07  Mihail Ionescu  <mihail.ionescu@arm.com>

	* testsuite/gas/aarch64/dgh.s: New test.
	* testsuite/gas/aarch64/dgh.d: New test.

opcodes/ChangeLog:

2019-11-07  Mihail Ionescu  <mihail.ionescu@arm.com>

	* opcodes/aarch64-tbl.h (V8_6_INSN): New macro for v8.6 instructions.
	(aarch64_opcode_table): Add data gathering hint mnemonic.
	* opcodes/aarch64-dis-2.c: Account for new instruction.

Is it ok for trunk?

Regards,
Mihail
2019-11-07 17:23:53 +00:00