[AArch64][SVE 27/32] Add SVE integer immediate operands

This patch adds the new SVE integer immediate operands.  There are
three kinds:

- simple signed and unsigned ranges, but with new widths and positions.

- 13-bit logical immediates.  These have the same form as in base AArch64,
  but at a different bit position.

  In the case of the "MOV Zn.<T>, #<limm>" alias of DUPM, the logical
  immediate <limm> is not allowed to be a valid DUP immediate, since DUP
  is preferred over DUPM for constants that both instructions can handle.

- a new 9-bit arithmetic immediate, of the form "<imm8>{, LSL #8}".
  In some contexts the operand is signed and in others it's unsigned.
  As an extension, we allow shifted immediates to be written as a single
  integer, e.g. "#256" is equivalent to "#1, LSL #8".  We also use the
  shiftless form as the preferred disassembly, except for the special
  case of "#0, LSL #8" (a redundant encoding of 0).

include/
	* opcode/aarch64.h (AARCH64_OPND_SIMM5): New aarch64_opnd.
	(AARCH64_OPND_SVE_AIMM, AARCH64_OPND_SVE_ASIMM)
	(AARCH64_OPND_SVE_INV_LIMM, AARCH64_OPND_SVE_LIMM)
	(AARCH64_OPND_SVE_LIMM_MOV, AARCH64_OPND_SVE_SHLIMM_PRED)
	(AARCH64_OPND_SVE_SHLIMM_UNPRED, AARCH64_OPND_SVE_SHRIMM_PRED)
	(AARCH64_OPND_SVE_SHRIMM_UNPRED, AARCH64_OPND_SVE_SIMM5)
	(AARCH64_OPND_SVE_SIMM5B, AARCH64_OPND_SVE_SIMM6)
	(AARCH64_OPND_SVE_SIMM8, AARCH64_OPND_SVE_UIMM3)
	(AARCH64_OPND_SVE_UIMM7, AARCH64_OPND_SVE_UIMM8)
	(AARCH64_OPND_SVE_UIMM8_53): Likewise.
	(aarch64_sve_dupm_mov_immediate_p): Declare.

opcodes/
	* aarch64-tbl.h (AARCH64_OPERANDS): Add entries for the new SVE
	integer immediate operands.
	* aarch64-opc.h (FLD_SVE_immN, FLD_SVE_imm3, FLD_SVE_imm5)
	(FLD_SVE_imm5b, FLD_SVE_imm7, FLD_SVE_imm8, FLD_SVE_imm9)
	(FLD_SVE_immr, FLD_SVE_imms, FLD_SVE_tszh): New aarch64_field_kinds.
	* aarch64-opc.c (fields): Add corresponding entries.
	(operand_general_constraint_met_p): Handle the new SVE integer
	immediate operands.
	(aarch64_print_operand): Likewise.
	(aarch64_sve_dupm_mov_immediate_p): New function.
	* aarch64-opc-2.c: Regenerate.
	* aarch64-asm.h (ins_inv_limm, ins_sve_aimm, ins_sve_asimm)
	(ins_sve_limm_mov, ins_sve_shlimm, ins_sve_shrimm): New inserters.
	* aarch64-asm.c (aarch64_ins_limm_1): New function, split out from...
	(aarch64_ins_limm): ...here.
	(aarch64_ins_inv_limm): New function.
	(aarch64_ins_sve_aimm): Likewise.
	(aarch64_ins_sve_asimm): Likewise.
	(aarch64_ins_sve_limm_mov): Likewise.
	(aarch64_ins_sve_shlimm): Likewise.
	(aarch64_ins_sve_shrimm): Likewise.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis.h (ext_inv_limm, ext_sve_aimm, ext_sve_asimm)
	(ext_sve_limm_mov, ext_sve_shlimm, ext_sve_shrimm): New extractors.
	* aarch64-dis.c (decode_limm): New function, split out from...
	(aarch64_ext_limm): ...here.
	(aarch64_ext_inv_limm): New function.
	(decode_sve_aimm): Likewise.
	(aarch64_ext_sve_aimm): Likewise.
	(aarch64_ext_sve_asimm): Likewise.
	(aarch64_ext_sve_limm_mov): Likewise.
	(aarch64_top_bit): Likewise.
	(aarch64_ext_sve_shlimm): Likewise.
	(aarch64_ext_sve_shrimm): Likewise.
	* aarch64-dis-2.c: Regenerate.

gas/
	* config/tc-aarch64.c (parse_operands): Handle the new SVE integer
	immediate operands.

1 files changed, 6 insertions, 0 deletions

diff --git a/opcodes/aarch64-asm.h b/opcodes/aarch64-asm.h
index 5e13de04831..bbd320eb8eb 100644
--- a/opcodes/aarch64-asm.h
+++ b/opcodes/aarch64-asm.h
@@ -54,6 +54,7 @@ AARCH64_DECL_OPD_INSERTER (ins_fpimm);
 AARCH64_DECL_OPD_INSERTER (ins_fbits);
 AARCH64_DECL_OPD_INSERTER (ins_aimm);
 AARCH64_DECL_OPD_INSERTER (ins_limm);
+AARCH64_DECL_OPD_INSERTER (ins_inv_limm);
 AARCH64_DECL_OPD_INSERTER (ins_ft);
 AARCH64_DECL_OPD_INSERTER (ins_addr_simple);
 AARCH64_DECL_OPD_INSERTER (ins_addr_regoff);
@@ -79,9 +80,14 @@ AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zi_u5);
 AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_lsl);
 AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_sxtw);
 AARCH64_DECL_OPD_INSERTER (ins_sve_addr_zz_uxtw);
+AARCH64_DECL_OPD_INSERTER (ins_sve_aimm);
+AARCH64_DECL_OPD_INSERTER (ins_sve_asimm);
 AARCH64_DECL_OPD_INSERTER (ins_sve_index);
+AARCH64_DECL_OPD_INSERTER (ins_sve_limm_mov);
 AARCH64_DECL_OPD_INSERTER (ins_sve_reglist);
 AARCH64_DECL_OPD_INSERTER (ins_sve_scale);
+AARCH64_DECL_OPD_INSERTER (ins_sve_shlimm);
+AARCH64_DECL_OPD_INSERTER (ins_sve_shrimm);
 
 #undef AARCH64_DECL_OPD_INSERTER