Add Xtensa port

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[];
+