| /* Internal definitions for configurable Xtensa ISA support. |
| Copyright (C) 2003-2016 Free Software Foundation, Inc. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, |
| USA. */ |
| |
| #ifndef XTENSA_ISA_INTERNAL_H |
| #define XTENSA_ISA_INTERNAL_H |
| |
| /* Flags. */ |
| |
| #define XTENSA_OPERAND_IS_REGISTER 0x00000001 |
| #define XTENSA_OPERAND_IS_PCRELATIVE 0x00000002 |
| #define XTENSA_OPERAND_IS_INVISIBLE 0x00000004 |
| #define XTENSA_OPERAND_IS_UNKNOWN 0x00000008 |
| |
| #define XTENSA_OPCODE_IS_BRANCH 0x00000001 |
| #define XTENSA_OPCODE_IS_JUMP 0x00000002 |
| #define XTENSA_OPCODE_IS_LOOP 0x00000004 |
| #define XTENSA_OPCODE_IS_CALL 0x00000008 |
| |
| #define XTENSA_STATE_IS_EXPORTED 0x00000001 |
| #define XTENSA_STATE_IS_SHARED_OR 0x00000002 |
| |
| #define XTENSA_INTERFACE_HAS_SIDE_EFFECT 0x00000001 |
| |
| /* Function pointer typedefs */ |
| typedef void (*xtensa_format_encode_fn) (xtensa_insnbuf); |
| typedef void (*xtensa_get_slot_fn) (const xtensa_insnbuf, xtensa_insnbuf); |
| typedef void (*xtensa_set_slot_fn) (xtensa_insnbuf, const xtensa_insnbuf); |
| typedef int (*xtensa_opcode_decode_fn) (const xtensa_insnbuf); |
| typedef uint32 (*xtensa_get_field_fn) (const xtensa_insnbuf); |
| typedef void (*xtensa_set_field_fn) (xtensa_insnbuf, uint32); |
| typedef int (*xtensa_immed_decode_fn) (uint32 *); |
| typedef int (*xtensa_immed_encode_fn) (uint32 *); |
| typedef int (*xtensa_do_reloc_fn) (uint32 *, uint32); |
| typedef int (*xtensa_undo_reloc_fn) (uint32 *, uint32); |
| typedef void (*xtensa_opcode_encode_fn) (xtensa_insnbuf); |
| typedef int (*xtensa_format_decode_fn) (const xtensa_insnbuf); |
| typedef int (*xtensa_length_decode_fn) (const unsigned char *); |
| |
| typedef struct xtensa_format_internal_struct |
| { |
| const char *name; /* Instruction format name. */ |
| int length; /* Instruction length in bytes. */ |
| xtensa_format_encode_fn encode_fn; |
| int num_slots; |
| int *slot_id; /* Array[num_slots] of slot IDs. */ |
| } xtensa_format_internal; |
| |
| typedef struct xtensa_slot_internal_struct |
| { |
| const char *name; /* Not necessarily unique. */ |
| const char *format; |
| int position; |
| xtensa_get_slot_fn get_fn; |
| xtensa_set_slot_fn set_fn; |
| xtensa_get_field_fn *get_field_fns; /* Array[field_id]. */ |
| xtensa_set_field_fn *set_field_fns; /* Array[field_id]. */ |
| xtensa_opcode_decode_fn opcode_decode_fn; |
| const char *nop_name; |
| } xtensa_slot_internal; |
| |
| typedef struct xtensa_operand_internal_struct |
| { |
| const char *name; |
| int field_id; |
| xtensa_regfile regfile; /* Register file. */ |
| int num_regs; /* Usually 1; 2 for reg pairs, etc. */ |
| uint32 flags; /* See XTENSA_OPERAND_* flags. */ |
| xtensa_immed_encode_fn encode; /* Encode the operand value. */ |
| xtensa_immed_decode_fn decode; /* Decode the value from the field. */ |
| xtensa_do_reloc_fn do_reloc; /* Perform a PC-relative reloc. */ |
| xtensa_undo_reloc_fn undo_reloc; /* Undo a PC-relative relocation. */ |
| } xtensa_operand_internal; |
| |
| typedef struct xtensa_arg_internal_struct |
| { |
| union { |
| int operand_id; /* For normal operands. */ |
| xtensa_state state; /* For stateOperands. */ |
| } u; |
| char inout; /* Direction: 'i', 'o', or 'm'. */ |
| } xtensa_arg_internal; |
| |
| typedef struct xtensa_iclass_internal_struct |
| { |
| int num_operands; /* Size of "operands" array. */ |
| xtensa_arg_internal *operands; /* Array[num_operands]. */ |
| |
| int num_stateOperands; /* Size of "stateOperands" array. */ |
| xtensa_arg_internal *stateOperands; /* Array[num_stateOperands]. */ |
| |
| int num_interfaceOperands; /* Size of "interfaceOperands". */ |
| xtensa_interface *interfaceOperands; /* Array[num_interfaceOperands]. */ |
| } xtensa_iclass_internal; |
| |
| typedef struct xtensa_opcode_internal_struct |
| { |
| const char *name; /* Opcode mnemonic. */ |
| int iclass_id; /* Iclass for this opcode. */ |
| uint32 flags; /* See XTENSA_OPCODE_* flags. */ |
| xtensa_opcode_encode_fn *encode_fns; /* Array[slot_id]. */ |
| int num_funcUnit_uses; /* Number of funcUnit_use entries. */ |
| xtensa_funcUnit_use *funcUnit_uses; /* Array[num_funcUnit_uses]. */ |
| } xtensa_opcode_internal; |
| |
| typedef struct xtensa_regfile_internal_struct |
| { |
| const char *name; /* Full name of the regfile. */ |
| const char *shortname; /* Abbreviated name. */ |
| xtensa_regfile parent; /* View parent (or identity). */ |
| int num_bits; /* Width of the registers. */ |
| int num_entries; /* Number of registers. */ |
| } xtensa_regfile_internal; |
| |
| typedef struct xtensa_interface_internal_struct |
| { |
| const char *name; /* Interface name. */ |
| int num_bits; /* Width of the interface. */ |
| uint32 flags; /* See XTENSA_INTERFACE_* flags. */ |
| int class_id; /* Class of related interfaces. */ |
| char inout; /* "i" or "o". */ |
| } xtensa_interface_internal; |
| |
| typedef struct xtensa_funcUnit_internal_struct |
| { |
| const char *name; /* Functional unit name. */ |
| int num_copies; /* Number of instances. */ |
| } xtensa_funcUnit_internal; |
| |
| typedef struct xtensa_state_internal_struct |
| { |
| const char *name; /* State name. */ |
| int num_bits; /* Number of state bits. */ |
| uint32 flags; /* See XTENSA_STATE_* flags. */ |
| } xtensa_state_internal; |
| |
| typedef struct xtensa_sysreg_internal_struct |
| { |
| const char *name; /* Register name. */ |
| int number; /* Register number. */ |
| int is_user; /* Non-zero if a "user register". */ |
| } xtensa_sysreg_internal; |
| |
| typedef struct xtensa_lookup_entry_struct |
| { |
| const char *key; |
| union |
| { |
| xtensa_opcode opcode; /* Internal opcode number. */ |
| xtensa_sysreg sysreg; /* Internal sysreg number. */ |
| xtensa_state state; /* Internal state number. */ |
| xtensa_interface intf; /* Internal interface number. */ |
| xtensa_funcUnit fun; /* Internal funcUnit number. */ |
| } u; |
| } xtensa_lookup_entry; |
| |
| typedef struct xtensa_isa_internal_struct |
| { |
| int is_big_endian; /* Endianness. */ |
| int insn_size; /* Maximum length in bytes. */ |
| int insnbuf_size; /* Number of insnbuf_words. */ |
| |
| int num_formats; |
| xtensa_format_internal *formats; |
| xtensa_format_decode_fn format_decode_fn; |
| xtensa_length_decode_fn length_decode_fn; |
| |
| int num_slots; |
| xtensa_slot_internal *slots; |
| |
| int num_fields; |
| |
| int num_operands; |
| xtensa_operand_internal *operands; |
| |
| int num_iclasses; |
| xtensa_iclass_internal *iclasses; |
| |
| int num_opcodes; |
| xtensa_opcode_internal *opcodes; |
| xtensa_lookup_entry *opname_lookup_table; |
| |
| int num_regfiles; |
| xtensa_regfile_internal *regfiles; |
| |
| int num_states; |
| xtensa_state_internal *states; |
| xtensa_lookup_entry *state_lookup_table; |
| |
| int num_sysregs; |
| xtensa_sysreg_internal *sysregs; |
| xtensa_lookup_entry *sysreg_lookup_table; |
| |
| /* The current Xtensa ISA only supports 256 of each kind of sysreg so |
| we can get away with implementing lookups with tables indexed by |
| the register numbers. If we ever allow larger sysreg numbers, this |
| may have to be reimplemented. The first entry in the following |
| arrays corresponds to "special" registers and the second to "user" |
| registers. */ |
| int max_sysreg_num[2]; |
| xtensa_sysreg *sysreg_table[2]; |
| |
| int num_interfaces; |
| xtensa_interface_internal *interfaces; |
| xtensa_lookup_entry *interface_lookup_table; |
| |
| int num_funcUnits; |
| xtensa_funcUnit_internal *funcUnits; |
| xtensa_lookup_entry *funcUnit_lookup_table; |
| |
| } xtensa_isa_internal; |
| |
| extern int xtensa_isa_name_compare (const void *, const void *); |
| |
| extern xtensa_isa_status xtisa_errno; |
| extern char xtisa_error_msg[]; |
| |
| #endif /* !XTENSA_ISA_INTERNAL_H */ |