/* 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[];