[AArch64][SVE 25/32] Add support for SVE addressing modes

This patch adds most of the new SVE addressing modes and associated
operands.  A follow-on patch adds MUL VL, since handling it separately
makes the changes easier to read.

The patch also introduces a new "operand-dependent data" field to the
operand flags, based closely on the existing one for opcode flags.
For SVE this new field needs only 2 bits, but it could be widened
in future if necessary.

include/
	* opcode/aarch64.h (AARCH64_OPND_SVE_ADDR_RI_U6): New aarch64_opnd.
	(AARCH64_OPND_SVE_ADDR_RI_U6x2, AARCH64_OPND_SVE_ADDR_RI_U6x4)
	(AARCH64_OPND_SVE_ADDR_RI_U6x8, AARCH64_OPND_SVE_ADDR_RR)
	(AARCH64_OPND_SVE_ADDR_RR_LSL1, AARCH64_OPND_SVE_ADDR_RR_LSL2)
	(AARCH64_OPND_SVE_ADDR_RR_LSL3, AARCH64_OPND_SVE_ADDR_RX)
	(AARCH64_OPND_SVE_ADDR_RX_LSL1, AARCH64_OPND_SVE_ADDR_RX_LSL2)
	(AARCH64_OPND_SVE_ADDR_RX_LSL3, AARCH64_OPND_SVE_ADDR_RZ)
	(AARCH64_OPND_SVE_ADDR_RZ_LSL1, AARCH64_OPND_SVE_ADDR_RZ_LSL2)
	(AARCH64_OPND_SVE_ADDR_RZ_LSL3, AARCH64_OPND_SVE_ADDR_RZ_XTW_14)
	(AARCH64_OPND_SVE_ADDR_RZ_XTW_22, AARCH64_OPND_SVE_ADDR_RZ_XTW1_14)
	(AARCH64_OPND_SVE_ADDR_RZ_XTW1_22, AARCH64_OPND_SVE_ADDR_RZ_XTW2_14)
	(AARCH64_OPND_SVE_ADDR_RZ_XTW2_22, AARCH64_OPND_SVE_ADDR_RZ_XTW3_14)
	(AARCH64_OPND_SVE_ADDR_RZ_XTW3_22, AARCH64_OPND_SVE_ADDR_ZI_U5)
	(AARCH64_OPND_SVE_ADDR_ZI_U5x2, AARCH64_OPND_SVE_ADDR_ZI_U5x4)
	(AARCH64_OPND_SVE_ADDR_ZI_U5x8, AARCH64_OPND_SVE_ADDR_ZZ_LSL)
	(AARCH64_OPND_SVE_ADDR_ZZ_SXTW, AARCH64_OPND_SVE_ADDR_ZZ_UXTW):
	Likewise.

opcodes/
	* aarch64-tbl.h (AARCH64_OPERANDS): Add entries for the new SVE
	address operands.
	* aarch64-opc.h (FLD_SVE_imm6, FLD_SVE_msz, FLD_SVE_xs_14)
	(FLD_SVE_xs_22): New aarch64_field_kinds.
	(OPD_F_OD_MASK, OPD_F_OD_LSB, OPD_F_NO_ZR): New flags.
	(get_operand_specific_data): New function.
	* aarch64-opc.c (fields): Add entries for FLD_SVE_imm6, FLD_SVE_msz,
	FLD_SVE_xs_14 and FLD_SVE_xs_22.
	(operand_general_constraint_met_p): Handle the new SVE address
	operands.
	(sve_reg): New array.
	(get_addr_sve_reg_name): New function.
	(aarch64_print_operand): Handle the new SVE address operands.
	* aarch64-opc-2.c: Regenerate.
	* aarch64-asm.h (ins_sve_addr_ri_u6, ins_sve_addr_rr_lsl)
	(ins_sve_addr_rz_xtw, ins_sve_addr_zi_u5, ins_sve_addr_zz_lsl)
	(ins_sve_addr_zz_sxtw, ins_sve_addr_zz_uxtw): New inserters.
	* aarch64-asm.c (aarch64_ins_sve_addr_ri_u6): New function.
	(aarch64_ins_sve_addr_rr_lsl): Likewise.
	(aarch64_ins_sve_addr_rz_xtw): Likewise.
	(aarch64_ins_sve_addr_zi_u5): Likewise.
	(aarch64_ins_sve_addr_zz): Likewise.
	(aarch64_ins_sve_addr_zz_lsl): Likewise.
	(aarch64_ins_sve_addr_zz_sxtw): Likewise.
	(aarch64_ins_sve_addr_zz_uxtw): Likewise.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis.h (ext_sve_addr_ri_u6, ext_sve_addr_rr_lsl)
	(ext_sve_addr_rz_xtw, ext_sve_addr_zi_u5, ext_sve_addr_zz_lsl)
	(ext_sve_addr_zz_sxtw, ext_sve_addr_zz_uxtw): New extractors.
	* aarch64-dis.c (aarch64_ext_sve_add_reg_imm): New function.
	(aarch64_ext_sve_addr_ri_u6): Likewise.
	(aarch64_ext_sve_addr_rr_lsl): Likewise.
	(aarch64_ext_sve_addr_rz_xtw): Likewise.
	(aarch64_ext_sve_addr_zi_u5): Likewise.
	(aarch64_ext_sve_addr_zz): Likewise.
	(aarch64_ext_sve_addr_zz_lsl): Likewise.
	(aarch64_ext_sve_addr_zz_sxtw): Likewise.
	(aarch64_ext_sve_addr_zz_uxtw): Likewise.
	* aarch64-dis-2.c: Regenerate.

gas/
	* config/tc-aarch64.c (REG_TYPE_SVE_BASE, REG_TYPE_SVE_OFFSET): New
	register types.
	(get_reg_expected_msg): Handle them.
	(aarch64_addr_reg_parse): New function, split out from
	aarch64_reg_parse_32_64.  Handle Z registers too.
	(aarch64_reg_parse_32_64): Call it.
	(parse_address_main): Add base_qualifier, offset_qualifier,
	base_type and offset_type parameters.  Handle SVE base and offset
	registers.
	(parse_address): Update call to parse_address_main.
	(parse_sve_address): New function.
	(parse_operands): Parse the new SVE address operands.

1 files changed, 146 insertions, 0 deletions

diff --git a/opcodes/aarch64-dis.c b/opcodes/aarch64-dis.c
index 1d00c0a..ed77b4d 100644
--- a/opcodes/aarch64-dis.c
+++ b/opcodes/aarch64-dis.c
@@ -1186,6 +1186,152 @@ aarch64_ext_reg_shifted (const aarch64_operand *self ATTRIBUTE_UNUSED,
   return 1;
 }
 
+/* Decode an SVE address [<base>, #<offset> << <shift>], where <offset>
+   is given by the OFFSET parameter and where <shift> is SELF's operand-
+   dependent value.  fields[0] specifies the base register field <base>.  */
+static int
+aarch64_ext_sve_addr_reg_imm (const aarch64_operand *self,
+			      aarch64_opnd_info *info, aarch64_insn code,
+			      int64_t offset)
+{
+  info->addr.base_regno = extract_field (self->fields[0], code, 0);
+  info->addr.offset.imm = offset * (1 << get_operand_specific_data (self));
+  info->addr.offset.is_reg = FALSE;
+  info->addr.writeback = FALSE;
+  info->addr.preind = TRUE;
+  info->shifter.operator_present = FALSE;
+  info->shifter.amount_present = FALSE;
+  return 1;
+}
+
+/* Decode an SVE address [X<n>, #<SVE_imm6> << <shift>], where <SVE_imm6>
+   is a 6-bit unsigned number and where <shift> is SELF's operand-dependent
+   value.  fields[0] specifies the base register field.  */
+int
+aarch64_ext_sve_addr_ri_u6 (const aarch64_operand *self,
+			    aarch64_opnd_info *info, aarch64_insn code,
+			    const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  int offset = extract_field (FLD_SVE_imm6, code, 0);
+  return aarch64_ext_sve_addr_reg_imm (self, info, code, offset);
+}
+
+/* Decode an SVE address [X<n>, X<m>{, LSL #<shift>}], where <shift>
+   is SELF's operand-dependent value.  fields[0] specifies the base
+   register field and fields[1] specifies the offset register field.  */
+int
+aarch64_ext_sve_addr_rr_lsl (const aarch64_operand *self,
+			     aarch64_opnd_info *info, aarch64_insn code,
+			     const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  int index;
+
+  index = extract_field (self->fields[1], code, 0);
+  if (index == 31 && (self->flags & OPD_F_NO_ZR) != 0)
+    return 0;
+
+  info->addr.base_regno = extract_field (self->fields[0], code, 0);
+  info->addr.offset.regno = index;
+  info->addr.offset.is_reg = TRUE;
+  info->addr.writeback = FALSE;
+  info->addr.preind = TRUE;
+  info->shifter.kind = AARCH64_MOD_LSL;
+  info->shifter.amount = get_operand_specific_data (self);
+  info->shifter.operator_present = (info->shifter.amount != 0);
+  info->shifter.amount_present = (info->shifter.amount != 0);
+  return 1;
+}
+
+/* Decode an SVE address [X<n>, Z<m>.<T>, (S|U)XTW {#<shift>}], where
+   <shift> is SELF's operand-dependent value.  fields[0] specifies the
+   base register field, fields[1] specifies the offset register field and
+   fields[2] is a single-bit field that selects SXTW over UXTW.  */
+int
+aarch64_ext_sve_addr_rz_xtw (const aarch64_operand *self,
+			     aarch64_opnd_info *info, aarch64_insn code,
+			     const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  info->addr.base_regno = extract_field (self->fields[0], code, 0);
+  info->addr.offset.regno = extract_field (self->fields[1], code, 0);
+  info->addr.offset.is_reg = TRUE;
+  info->addr.writeback = FALSE;
+  info->addr.preind = TRUE;
+  if (extract_field (self->fields[2], code, 0))
+    info->shifter.kind = AARCH64_MOD_SXTW;
+  else
+    info->shifter.kind = AARCH64_MOD_UXTW;
+  info->shifter.amount = get_operand_specific_data (self);
+  info->shifter.operator_present = TRUE;
+  info->shifter.amount_present = (info->shifter.amount != 0);
+  return 1;
+}
+
+/* Decode an SVE address [Z<n>.<T>, #<imm5> << <shift>], where <imm5> is a
+   5-bit unsigned number and where <shift> is SELF's operand-dependent value.
+   fields[0] specifies the base register field.  */
+int
+aarch64_ext_sve_addr_zi_u5 (const aarch64_operand *self,
+			    aarch64_opnd_info *info, aarch64_insn code,
+			    const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  int offset = extract_field (FLD_imm5, code, 0);
+  return aarch64_ext_sve_addr_reg_imm (self, info, code, offset);
+}
+
+/* Decode an SVE address [Z<n>.<T>, Z<m>.<T>{, <modifier> {#<msz>}}],
+   where <modifier> is given by KIND and where <msz> is a 2-bit unsigned
+   number.  fields[0] specifies the base register field and fields[1]
+   specifies the offset register field.  */
+static int
+aarch64_ext_sve_addr_zz (const aarch64_operand *self, aarch64_opnd_info *info,
+			 aarch64_insn code, enum aarch64_modifier_kind kind)
+{
+  info->addr.base_regno = extract_field (self->fields[0], code, 0);
+  info->addr.offset.regno = extract_field (self->fields[1], code, 0);
+  info->addr.offset.is_reg = TRUE;
+  info->addr.writeback = FALSE;
+  info->addr.preind = TRUE;
+  info->shifter.kind = kind;
+  info->shifter.amount = extract_field (FLD_SVE_msz, code, 0);
+  info->shifter.operator_present = (kind != AARCH64_MOD_LSL
+				    || info->shifter.amount != 0);
+  info->shifter.amount_present = (info->shifter.amount != 0);
+  return 1;
+}
+
+/* Decode an SVE address [Z<n>.<T>, Z<m>.<T>{, LSL #<msz>}], where
+   <msz> is a 2-bit unsigned number.  fields[0] specifies the base register
+   field and fields[1] specifies the offset register field.  */
+int
+aarch64_ext_sve_addr_zz_lsl (const aarch64_operand *self,
+			     aarch64_opnd_info *info, aarch64_insn code,
+			     const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  return aarch64_ext_sve_addr_zz (self, info, code, AARCH64_MOD_LSL);
+}
+
+/* Decode an SVE address [Z<n>.<T>, Z<m>.<T>, SXTW {#<msz>}], where
+   <msz> is a 2-bit unsigned number.  fields[0] specifies the base register
+   field and fields[1] specifies the offset register field.  */
+int
+aarch64_ext_sve_addr_zz_sxtw (const aarch64_operand *self,
+			      aarch64_opnd_info *info, aarch64_insn code,
+			      const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  return aarch64_ext_sve_addr_zz (self, info, code, AARCH64_MOD_SXTW);
+}
+
+/* Decode an SVE address [Z<n>.<T>, Z<m>.<T>, UXTW {#<msz>}], where
+   <msz> is a 2-bit unsigned number.  fields[0] specifies the base register
+   field and fields[1] specifies the offset register field.  */
+int
+aarch64_ext_sve_addr_zz_uxtw (const aarch64_operand *self,
+			      aarch64_opnd_info *info, aarch64_insn code,
+			      const aarch64_inst *inst ATTRIBUTE_UNUSED)
+{
+  return aarch64_ext_sve_addr_zz (self, info, code, AARCH64_MOD_UXTW);
+}
+
 /* Decode Zn[MM], where MM has a 7-bit triangular encoding.  The fields
    array specifies which field to use for Zn.  MM is encoded in the
    concatenation of imm5 and SVE_tszh, with imm5 being the less