165d495085
This patch adds support for the new SVE floating-point immediate operands. One operand uses the same 8-bit encoding as base AArch64, but in a different position. The others use a single bit to select between two values. One of the single-bit operands is a choice between 0 and 1, where 0 is not a valid 8-bit encoding. I think the cleanest way of handling these single-bit immediates is therefore to use the IEEE float encoding itself as the immediate value and select between the two possible values when encoding and decoding. As described in the covering note for the patch that added F_STRICT, we get better error messages by accepting unsuffixed vector registers and leaving the qualifier matching code to report an error. This means that we carry on parsing the other operands, and so can try to parse FP immediates for invalid instructions like: fcpy z0, #2.5 In this case there is no suffix to tell us whether the immediate should be treated as single or double precision. Again, we get better error messages by picking one (arbitrary) immediate size and reporting an error for the missing suffix later. include/ * opcode/aarch64.h (AARCH64_OPND_SVE_FPIMM8): New aarch64_opnd. (AARCH64_OPND_SVE_I1_HALF_ONE, AARCH64_OPND_SVE_I1_HALF_TWO) (AARCH64_OPND_SVE_I1_ZERO_ONE): Likewise. opcodes/ * aarch64-tbl.h (AARCH64_OPERANDS): Add entries for the new SVE FP immediate operands. * aarch64-opc.h (FLD_SVE_i1): New aarch64_field_kind. * aarch64-opc.c (fields): Add corresponding entry. (operand_general_constraint_met_p): Handle the new SVE FP immediate operands. (aarch64_print_operand): Likewise. * aarch64-opc-2.c: Regenerate. * aarch64-asm.h (ins_sve_float_half_one, ins_sve_float_half_two) (ins_sve_float_zero_one): New inserters. * aarch64-asm.c (aarch64_ins_sve_float_half_one): New function. (aarch64_ins_sve_float_half_two): Likewise. (aarch64_ins_sve_float_zero_one): Likewise. * aarch64-asm-2.c: Regenerate. * aarch64-dis.h (ext_sve_float_half_one, ext_sve_float_half_two) (ext_sve_float_zero_one): New extractors. * aarch64-dis.c (aarch64_ext_sve_float_half_one): New function. (aarch64_ext_sve_float_half_two): Likewise. (aarch64_ext_sve_float_zero_one): Likewise. * aarch64-dis-2.c: Regenerate. gas/ * config/tc-aarch64.c (double_precision_operand_p): New function. (parse_operands): Use it to calculate the dp_p input to parse_aarch64_imm_float. Handle the new SVE FP immediate operands.
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/* aarch64-asm.h -- Header file for aarch64-asm.c and aarch64-asm-2.c.
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Copyright (C) 2012-2016 Free Software Foundation, Inc.
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Contributed by ARM Ltd.
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This file is part of the GNU opcodes library.
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#ifndef OPCODES_AARCH64_ASM_H
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#define OPCODES_AARCH64_ASM_H
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#include "aarch64-opc.h"
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/* Given OPCODE, return the opcode entry that OPCODE aliases to, e.g.
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given LSL, return UBFM. */
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const aarch64_opcode* aarch64_find_real_opcode (const aarch64_opcode *);
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/* Switch-table-based high-level operand inserter. */
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const char* aarch64_insert_operand (const aarch64_operand *,
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const aarch64_opnd_info *, aarch64_insn *,
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const aarch64_inst *);
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/* Operand inserters. */
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#define AARCH64_DECL_OPD_INSERTER(x) \
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const char* aarch64_##x (const aarch64_operand *, const aarch64_opnd_info *, \
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aarch64_insn *, const aarch64_inst *)
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AARCH64_DECL_OPD_INSERTER (ins_regno);
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AARCH64_DECL_OPD_INSERTER (ins_reglane);
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AARCH64_DECL_OPD_INSERTER (ins_reglist);
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AARCH64_DECL_OPD_INSERTER (ins_ldst_reglist);
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AARCH64_DECL_OPD_INSERTER (ins_ldst_reglist_r);
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AARCH64_DECL_OPD_INSERTER (ins_ldst_elemlist);
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AARCH64_DECL_OPD_INSERTER (ins_advsimd_imm_shift);
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AARCH64_DECL_OPD_INSERTER (ins_imm);
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AARCH64_DECL_OPD_INSERTER (ins_imm_half);
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AARCH64_DECL_OPD_INSERTER (ins_advsimd_imm_modified);
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AARCH64_DECL_OPD_INSERTER (ins_fpimm);
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AARCH64_DECL_OPD_INSERTER (ins_fbits);
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AARCH64_DECL_OPD_INSERTER (ins_aimm);
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AARCH64_DECL_OPD_INSERTER (ins_limm);
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AARCH64_DECL_OPD_INSERTER (ins_inv_limm);
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AARCH64_DECL_OPD_INSERTER (ins_ft);
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AARCH64_DECL_OPD_INSERTER (ins_addr_simple);
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AARCH64_DECL_OPD_INSERTER (ins_addr_regoff);
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AARCH64_DECL_OPD_INSERTER (ins_addr_simm);
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AARCH64_DECL_OPD_INSERTER (ins_addr_uimm12);
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AARCH64_DECL_OPD_INSERTER (ins_simd_addr_post);
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AARCH64_DECL_OPD_INSERTER (ins_cond);
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AARCH64_DECL_OPD_INSERTER (ins_sysreg);
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AARCH64_DECL_OPD_INSERTER (ins_pstatefield);
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AARCH64_DECL_OPD_INSERTER (ins_sysins_op);
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AARCH64_DECL_OPD_INSERTER (ins_barrier);
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AARCH64_DECL_OPD_INSERTER (ins_hint);
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AARCH64_DECL_OPD_INSERTER (ins_prfop);
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AARCH64_DECL_OPD_INSERTER (ins_reg_extended);
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AARCH64_DECL_OPD_INSERTER (ins_reg_shifted);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_ri_s4xvl);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_ri_s6xvl);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_ri_s9xvl);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_ri_u6);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_rr_lsl);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_rz_xtw);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zi_u5);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_lsl);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_sxtw);
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AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_uxtw);
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AARCH64_DECL_OPD_INSERTER (ins_sve_aimm);
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AARCH64_DECL_OPD_INSERTER (ins_sve_asimm);
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AARCH64_DECL_OPD_INSERTER (ins_sve_float_half_one);
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AARCH64_DECL_OPD_INSERTER (ins_sve_float_half_two);
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AARCH64_DECL_OPD_INSERTER (ins_sve_float_zero_one);
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AARCH64_DECL_OPD_INSERTER (ins_sve_index);
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AARCH64_DECL_OPD_INSERTER (ins_sve_limm_mov);
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AARCH64_DECL_OPD_INSERTER (ins_sve_reglist);
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AARCH64_DECL_OPD_INSERTER (ins_sve_scale);
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AARCH64_DECL_OPD_INSERTER (ins_sve_shlimm);
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AARCH64_DECL_OPD_INSERTER (ins_sve_shrimm);
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#undef AARCH64_DECL_OPD_INSERTER
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#endif /* OPCODES_AARCH64_ASM_H */
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