| /* Internal definitions for configurable Xtensa ISA support. |
| Copyright 2003 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| /* Use the statically-linked version for the GNU tools. */ |
| #define STATIC_LIBISA 1 |
| |
| #define ISA_INTERFACE_VERSION 3 |
| |
| struct config_struct |
| { |
| char *param_name; |
| char *param_value; |
| }; |
| |
| /* Encode/decode function types for immediate operands. */ |
| typedef uint32 (*xtensa_immed_decode_fn) (uint32); |
| typedef xtensa_encode_result (*xtensa_immed_encode_fn) (uint32 *); |
| |
| /* Field accessor function types. */ |
| typedef uint32 (*xtensa_get_field_fn) (const xtensa_insnbuf); |
| typedef void (*xtensa_set_field_fn) (xtensa_insnbuf, uint32); |
| |
| /* PC-relative relocation function types. */ |
| typedef uint32 (*xtensa_do_reloc_fn) (uint32, uint32); |
| typedef uint32 (*xtensa_undo_reloc_fn) (uint32, uint32); |
| |
| /* Instruction decode function type. */ |
| typedef int (*xtensa_insn_decode_fn) (const xtensa_insnbuf); |
| |
| /* Instruction encoding template function type (each of these functions |
| returns a constant template; they exist only to make it easier for the |
| TIE compiler to generate endian-independent DLLs). */ |
| typedef xtensa_insnbuf (*xtensa_encoding_template_fn) (void); |
| |
| |
| typedef struct xtensa_operand_internal_struct |
| { |
| char *operand_kind; /* e.g., "a", "f", "i", "l".... */ |
| char inout; /* '<', '>', or '='. */ |
| char isPCRelative; /* Is this a PC-relative offset? */ |
| xtensa_get_field_fn get_field; /* Get encoded value of the field. */ |
| xtensa_set_field_fn set_field; /* Set field with an encoded value. */ |
| 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 relocation. */ |
| xtensa_undo_reloc_fn undo_reloc; /* Undo a PC-relative relocation. */ |
| } xtensa_operand_internal; |
| |
| |
| typedef struct xtensa_iclass_internal_struct |
| { |
| int num_operands; /* Size of "operands" array. */ |
| xtensa_operand_internal **operands; /* Array of operand structures. */ |
| } xtensa_iclass_internal; |
| |
| |
| typedef struct xtensa_opcode_internal_struct |
| { |
| const char *name; /* Opcode mnemonic. */ |
| int length; /* Length in bytes of the insn. */ |
| xtensa_encoding_template_fn template; /* Fn returning encoding template. */ |
| xtensa_iclass_internal *iclass; /* Iclass for this opcode. */ |
| } xtensa_opcode_internal; |
| |
| |
| typedef struct opname_lookup_entry_struct |
| { |
| const char *key; /* Opcode mnemonic. */ |
| xtensa_opcode opcode; /* Internal opcode number. */ |
| } opname_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_opcodes; /* Total number for all modules. */ |
| xtensa_opcode_internal **opcode_table;/* Indexed by internal opcode #. */ |
| int num_modules; /* Number of modules (DLLs) loaded. */ |
| int *module_opcode_base; /* Starting opcode # for each module. */ |
| xtensa_insn_decode_fn *module_decode_fn; /* Decode fn for each module. */ |
| opname_lookup_entry *opname_lookup_table; /* Lookup table for each module. */ |
| struct config_struct *config; /* Table of configuration parameters. */ |
| int has_density; /* Is density option available? */ |
| } xtensa_isa_internal; |
| |
| |
| typedef struct xtensa_isa_module_struct |
| { |
| int (*get_num_opcodes_fn) (void); |
| xtensa_opcode_internal **(*get_opcodes_fn) (void); |
| int (*decode_insn_fn) (const xtensa_insnbuf); |
| struct config_struct *(*get_config_table_fn) (void); |
| } xtensa_isa_module; |
| |
| extern xtensa_isa_module xtensa_isa_modules[]; |
| |