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Diffstat (limited to 'include/xtensa-isa-internal.h')
| -rw-r--r-- | include/xtensa-isa-internal.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/include/xtensa-isa-internal.h b/include/xtensa-isa-internal.h new file mode 100644 index 000000000..d2244c510 --- /dev/null +++ b/include/xtensa-isa-internal.h @@ -0,0 +1,114 @@ +/* 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 +{ + const 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[]; + |