--- /dev/null
+/* Header file for targets using CGEN: Cpu tools GENerator.
+
+Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+
+This file is part of GDB, the GNU debugger, and the GNU Binutils.
+
+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. */
+
+#ifndef CGEN_H
+#define CGEN_H
+
+#ifndef CGEN_CAT3
+#if defined(__STDC__) || defined(ALMOST_STDC)
+#define CGEN_XCAT3(a,b,c) a ## b ## c
+#define CGEN_CAT3(a,b,c) CGEN_XCAT3 (a, b, c)
+#else
+#define CGEN_CAT3(a,b,c) a/**/b/**/c
+#endif
+#endif
+
+/* Prepend the cpu name, defined in cpu-opc.h, and _cgen_ to symbol S.
+ The lack of spaces in the arg list is important for non-stdc systems.
+ This file is included by <cpu>-opc.h.
+ It can be included independently of cpu-opc.h, in which case the cpu
+ dependent portions will be declared as "unknown_cgen_foo". */
+
+#ifndef CGEN_SYM
+#define CGEN_SYM(s) CGEN_CAT3 (unknown,_cgen_,s)
+#endif
+
+/* This file contains the static (unchanging) pieces and as much other stuff
+ as we can reasonably put here. It's generally cleaner to put stuff here
+ rather than having it machine generated if possible. */
+
+/* The assembler syntax is made up of expressions (duh...).
+ At the lowest level the values are mnemonics, register names, numbers, etc.
+ Above that are subexpressions, if any (an example might be the
+ "effective address" in m68k cpus). At the second highest level are the
+ insns themselves. Above that are pseudo-insns, synthetic insns, and macros,
+ if any.
+*/
+\f
+/* Lots of cpu's have a fixed insn size, or one which rarely changes,
+ and it's generally easier to handle these by treating the insn as an
+ integer type, rather than an array of characters. So we allow targets
+ to control this. */
+
+#ifdef CGEN_INT_INSN
+typedef unsigned int cgen_insn_t;
+#else
+typedef char *cgen_insn_t;
+#endif
+
+#ifdef __GNUC__
+#define CGEN_INLINE inline
+#else
+#define CGEN_INLINE
+#endif
+
+/* Perhaps we should just use bfd.h, but it's not clear
+ one would want to require that yet. */
+enum cgen_endian {
+ CGEN_ENDIAN_UNKNOWN,
+ CGEN_ENDIAN_LITTLE,
+ CGEN_ENDIAN_BIG
+};
+\f
+/* Attributes.
+ Attributes are used to describe various random things. */
+
+/* Struct to record attribute information. */
+typedef struct {
+ unsigned int num_nonbools;
+ unsigned int bool;
+ unsigned int nonbool[1];
+} CGEN_ATTR;
+
+/* Define a structure member for attributes with N non-boolean entries.
+ The attributes are sorted so that the non-boolean ones come first.
+ num_nonbools: count of nonboolean attributes
+ bool: values of boolean attributes
+ nonbool: values of non-boolean attributes
+ There is a maximum of 32 attributes total. */
+#define CGEN_ATTR_TYPE(n) \
+const struct { unsigned int num_nonbools; \
+ unsigned int bool; \
+ unsigned int nonbool[(n) ? (n) : 1]; }
+
+/* Given an attribute number, return its mask. */
+#define CGEN_ATTR_MASK(attr) (1 << (attr))
+
+/* Return value of attribute ATTR in ATTR_TABLE for OBJ.
+ OBJ is a pointer to the entity that has the attributes.
+ It's not used at present but is reserved for future purposes. */
+#define CGEN_ATTR_VALUE(obj, attr_table, attr) \
+((unsigned int) (attr) < (attr_table)->num_nonbools \
+ ? ((attr_table)->nonbool[attr]) \
+ : (((attr_table)->bool & (1 << (attr))) != 0))
+\f
+/* Parse result (also extraction result).
+
+ The result of parsing an insn is stored here.
+ To generate the actual insn, this is passed to the insert handler.
+ When printing an insn, the result of extraction is stored here.
+ To print the insn, this is passed to the print handler.
+
+ It is machine generated so we don't define it here,
+ but we do need a forward decl for the handler fns.
+
+ There is one member for each possible field in the insn.
+ The type depends on the field.
+ Also recorded here is the computed length of the insn for architectures
+ where it varies.
+*/
+
+struct cgen_fields;
+
+/* Total length of the insn, as recorded in the `fields' struct. */
+/* ??? The field insert handler has lots of opportunities for optimization
+ if it ever gets inlined. On architectures where insns all have the same
+ size, may wish to detect that and make this macro a constant - to allow
+ further optimizations. */
+#define CGEN_FIELDS_BITSIZE(fields) ((fields)->length)
+\f
+/* Associated with each insn or expression is a set of "handlers" for
+ performing operations like parsing, printing, etc. */
+
+/* Forward decl. */
+typedef struct cgen_insn CGEN_INSN;
+
+/* Parse handler.
+ The first argument is a pointer to a struct describing the insn being
+ parsed.
+ The second argument is a pointer to a pointer to the text being parsed.
+ The third argument is a pointer to a cgen_fields struct
+ in which the results are placed.
+ If the expression is successfully parsed, the pointer to the text is
+ updated. If not it is left alone.
+ The result is NULL if success or an error message. */
+typedef const char * (cgen_parse_fn) PARAMS ((const struct cgen_insn *,
+ const char **,
+ struct cgen_fields *));
+
+/* Print handler.
+ The first argument is a pointer to the disassembly info.
+ Eg: disassemble_info. It's defined as `PTR' so this file can be included
+ without dis-asm.h.
+ The second argument is a pointer to a struct describing the insn being
+ printed.
+ The third argument is a pointer to a cgen_fields struct.
+ The fourth argument is the pc value of the insn.
+ The fifth argument is the length of the insn, in bytes. */
+/* Don't require bfd.h unnecessarily. */
+#ifdef BFD_VERSION
+typedef void (cgen_print_fn) PARAMS ((PTR, const struct cgen_insn *,
+ struct cgen_fields *, bfd_vma, int));
+#else
+typedef void (cgen_print_fn) ();
+#endif
+
+/* Insert handler.
+ The first argument is a pointer to a struct describing the insn being
+ parsed.
+ The second argument is a pointer to a cgen_fields struct
+ from which the values are fetched.
+ The third argument is a pointer to a buffer in which to place the insn. */
+typedef void (cgen_insert_fn) PARAMS ((const struct cgen_insn *,
+ struct cgen_fields *, cgen_insn_t *));
+
+/* Extract handler.
+ The first argument is a pointer to a struct describing the insn being
+ parsed.
+ The second argument is a pointer to a struct controlling extraction
+ (only used for variable length insns).
+ The third argument is the first CGEN_BASE_INSN_SIZE bytes.
+ The fourth argument is a pointer to a cgen_fields struct
+ in which the results are placed.
+ The result is the length of the insn or zero if not recognized. */
+typedef int (cgen_extract_fn) PARAMS ((const struct cgen_insn *,
+ void *, cgen_insn_t,
+ struct cgen_fields *));
+
+/* The `parse' and `insert' fields are indices into these tables.
+ The elements are pointer to specialized handler functions.
+ Element 0 is special, it means use the default handler. */
+extern cgen_parse_fn * CGEN_SYM (parse_handlers) [];
+#define CGEN_PARSE_FN(x) (CGEN_SYM (parse_handlers)[(x)->base.parse])
+extern cgen_insert_fn * CGEN_SYM (insert_handlers) [];
+#define CGEN_INSERT_FN(x) (CGEN_SYM (insert_handlers)[(x)->base.insert])
+
+/* Likewise for the `extract' and `print' fields. */
+extern cgen_extract_fn * CGEN_SYM (extract_handlers) [];
+#define CGEN_EXTRACT_FN(x) (CGEN_SYM (extract_handlers)[(x)->base.extract])
+extern cgen_print_fn * CGEN_SYM (print_handlers) [];
+#define CGEN_PRINT_FN(x) (CGEN_SYM (print_handlers)[(x)->base.print])
+\f
+/* Base class of parser/printer.
+ (Don't read too much into the use of the phrase "base class").
+
+ Instructions and expressions all share this data in common.
+ It's a collection of the common elements needed to parse and print
+ each of them. */
+
+#ifndef CGEN_MAX_INSN_ATTRS
+#define CGEN_MAX_INSN_ATTRS 1
+#endif
+
+struct cgen_base {
+ /* Indices into the handler tables.
+ We could use pointers here instead, but in the case of the insn table,
+ 90% of them would be identical and that's a lot of redundant data.
+ 0 means use the default (what the default is is up to the code). */
+ unsigned char parse, insert, extract, print;
+
+ /* Attributes. */
+ CGEN_ATTR_TYPE (CGEN_MAX_INSN_ATTRS) attrs;
+};
+\f
+/* Syntax table.
+
+ Each insn and subexpression has one of these.
+
+ The syntax "string" consists of characters (n > 0 && n < 128), and operand
+ values (n >= 128), and is terminated by 0. Operand values are 128 + index
+ into the operand table. The operand table doesn't exist in C, per se, as
+ the data is recorded in the parse/insert/extract/print switch statements.
+
+ ??? Whether we want to use yacc instead is unclear, but we do make an
+ effort to not make doing that difficult. At least that's the intent.
+*/
+
+struct cgen_syntax {
+ /* Original syntax string, for debugging purposes. */
+ char *orig;
+
+ /* Name of entry (that distinguishes it from all other entries).
+ This is used, for example, in simulator profiling results. */
+ char *name;
+
+#if 0 /* not needed yet */
+ /* Format of this insn.
+ This doesn't closely follow the notion of instruction formats for more
+ complex instruction sets. This is the value computed at runtime. */
+ enum cgen_fmt_type fmt;
+#endif
+
+ /* Mnemonic (or name if expression). */
+ char *mnemonic;
+
+ /* Syntax string. */
+ /* FIXME: If each insn's mnemonic is constant, do we want to record just
+ the arguments here? */
+#ifndef CGEN_MAX_SYNTAX_BYTES
+#define CGEN_MAX_SYNTAX_BYTES 16
+#endif
+ unsigned char syntax[CGEN_MAX_SYNTAX_BYTES];
+
+#define CGEN_SYNTAX_CHAR_P(c) ((c) < 128)
+#define CGEN_SYNTAX_CHAR(c) (c)
+#define CGEN_SYNTAX_FIELD(c) ((c) - 128)
+
+ /* recognize insn if (op & mask) == value
+ For architectures with variable length insns, this is just a preliminary
+ test. */
+ /* FIXME: Might want a selectable type (rather than always
+ unsigned long). */
+ unsigned long mask, value;
+
+ /* length, in bits
+ This is the size that `mask' and `value' have been calculated to.
+ Normally it is CGEN_BASE_INSN_BITSIZE. On vliw architectures where
+ the base insn size may be larger than the size of an insn, this field is
+ less than CGEN_BASE_INSN_BITSIZE.
+ On architectures like the 386 and m68k the real size of the insn may
+ be computed while parsing. */
+ /* FIXME: wip, of course */
+ int length;
+};
+\f
+/* Operand values (keywords, integers, symbols, etc.) */
+
+/* Types of assembler elements. */
+
+enum cgen_asm_type {
+ CGEN_ASM_KEYWORD, CGEN_ASM_MAX
+};
+
+/* List of hardware elements. */
+
+typedef struct cgen_hw_entry {
+ struct cgen_hw_entry *next;
+ char *name;
+ enum cgen_asm_type asm_type;
+ PTR asm_data;
+} CGEN_HW_ENTRY;
+
+extern CGEN_HW_ENTRY *CGEN_SYM (hw_list);
+
+CGEN_HW_ENTRY *cgen_hw_lookup PARAMS ((const char *));
+
+#ifndef CGEN_MAX_KEYWORD_ATTRS
+#define CGEN_MAX_KEYWORD_ATTRS 1
+#endif
+
+/* This struct is used to describe things like register names, etc. */
+
+typedef struct cgen_keyword_entry {
+ /* Name (as in register name). */
+ char *name;
+
+ /* Value (as in register number).
+ The value cannot be -1 as that is used to indicate "not found".
+ IDEA: Have "FUNCTION" attribute? [function is called to fetch value]. */
+ int value;
+
+ /* Attributes. */
+ /* FIXME: Not used yet. */
+ CGEN_ATTR_TYPE (CGEN_MAX_KEYWORD_ATTRS) attrs;
+
+ /* Next name hash table entry. */
+ struct cgen_keyword_entry *next_name;
+ /* Next value hash table entry. */
+ struct cgen_keyword_entry *next_value;
+} CGEN_KEYWORD_ENTRY;
+
+/* Top level struct for describing a set of related keywords
+ (e.g. register names).
+
+ This struct supports runtime entry of new values, and hashed lookups. */
+
+typedef struct cgen_keyword {
+ /* Pointer to initial [compiled in] values. */
+ struct cgen_keyword_entry *init_entries;
+ /* Number of entries in `init_entries'. */
+ unsigned int num_init_entries;
+ /* Hash table used for name lookup. */
+ struct cgen_keyword_entry **name_hash_table;
+ /* Hash table used for value lookup. */
+ struct cgen_keyword_entry **value_hash_table;
+ /* Number of entries in the hash_tables. */
+ unsigned int hash_table_size;
+} CGEN_KEYWORD;
+
+/* Structure used for searching. */
+
+typedef struct cgen_keyword_search {
+ /* Table being searched. */
+ const struct cgen_keyword *table;
+ /* Specification of what is being searched for. */
+ const char *spec;
+ /* Current index in hash table. */
+ unsigned int current_hash;
+ /* Current element in current hash chain. */
+ struct cgen_keyword_entry *current_entry;
+} CGEN_KEYWORD_SEARCH;
+
+/* Lookup a keyword from its name. */
+const struct cgen_keyword_entry * cgen_keyword_lookup_name
+ PARAMS ((struct cgen_keyword *, const char *));
+/* Lookup a keyword from its value. */
+const struct cgen_keyword_entry * cgen_keyword_lookup_value
+ PARAMS ((struct cgen_keyword *, int));
+/* Add a keyword. */
+void cgen_keyword_add PARAMS ((struct cgen_keyword *,
+ struct cgen_keyword_entry *));
+/* Keyword searching.
+ This can be used to retrieve every keyword, or a subset. */
+struct cgen_keyword_search cgen_keyword_search_init
+ PARAMS ((struct cgen_keyword *, const char *));
+const struct cgen_keyword_entry *cgen_keyword_search_next
+ PARAMS ((struct cgen_keyword_search *));
+
+/* Operand value support routines. */
+/* FIXME: some of the long's here will need to be bfd_vma or some such. */
+
+const char * cgen_parse_keyword PARAMS ((const char **,
+ struct cgen_keyword *,
+ long *));
+const char * cgen_parse_signed_integer PARAMS ((const char **, int,
+ long, long, long *));
+const char * cgen_parse_unsigned_integer PARAMS ((const char **, int,
+ unsigned long, unsigned long,
+ unsigned long *));
+const char * cgen_parse_address PARAMS ((const char **, int,
+ int, long *));
+const char * cgen_validate_signed_integer PARAMS ((long, long, long));
+const char * cgen_validate_unsigned_integer PARAMS ((unsigned long,
+ unsigned long,
+ unsigned long));
+\f
+/* This struct defines each entry in the operand table. */
+
+#ifndef CGEN_MAX_OPERAND_ATTRS
+#define CGEN_MAX_OPERAND_ATTRS 1
+#endif
+
+typedef struct cgen_operand {
+ /* For debugging. */
+ char *name;
+
+ /* Bit position (msb of first byte = bit 0).
+ May be unused for a modifier. */
+ unsigned char start;
+
+ /* The number of bits in the operand.
+ May be unused for a modifier. */
+ unsigned char length;
+
+ /* Attributes. */
+ CGEN_ATTR_TYPE (CGEN_MAX_OPERAND_ATTRS) attrs;
+#define CGEN_OPERAND_ATTRS(operand) (&(operand)->attrs)
+
+#if 0 /* ??? Interesting idea but relocs tend to get too complicated for
+ simple table lookups to work. */
+ /* Ideally this would be the internal (external?) reloc type. */
+ int reloc_type;
+#endif
+} CGEN_OPERAND;
+
+/* Return value of attribute ATTR in OPERAND. */
+#define CGEN_OPERAND_ATTR(operand, attr) \
+CGEN_ATTR_VALUE (operand, CGEN_OPERAND_ATTRS (operand), attr)
+
+/* The operand table is currently a very static entity. */
+extern const CGEN_OPERAND CGEN_SYM (operand_table)[];
+
+enum cgen_operand_type;
+
+#define CGEN_OPERAND_INDEX(operand) ((int) ((operand) - CGEN_SYM (operand_table)))
+/* FIXME: Rename, cpu-opc.h defines this as the typedef of the enum. */
+#define CGEN_OPERAND_TYPE(operand) ((enum cgen_operand_type) CGEN_OPERAND_INDEX (operand))
+#define CGEN_OPERAND_ENTRY(n) (& CGEN_SYM (operand_table) [n])
+\f
+/* This struct defines each entry in the instruction table. */
+
+struct cgen_insn {
+ struct cgen_base base;
+/* Given a pointer to a cgen_insn struct, return a pointer to `base'. */
+#define CGEN_INSN_BASE(insn) (&(insn)->base)
+#define CGEN_INSN_ATTRS(insn) (&(insn)->base.attrs)
+
+ struct cgen_syntax syntax;
+#define CGEN_INSN_SYNTAX(insn) (&(insn)->syntax)
+#define CGEN_INSN_FMT(insn) ((insn)->syntax.fmt)
+#define CGEN_INSN_BITSIZE(insn) ((insn)->syntax.length)
+};
+
+/* Return value of attribute ATTR in INSN. */
+#define CGEN_INSN_ATTR(insn, attr) \
+CGEN_ATTR_VALUE (insn, CGEN_INSN_ATTRS (insn), attr)
+
+/* Instruction lists.
+ This is used for adding new entries and for creating the hash lists. */
+
+typedef struct cgen_insn_list {
+ struct cgen_insn_list *next;
+ const struct cgen_insn *insn;
+} CGEN_INSN_LIST;
+
+/* The table of instructions. */
+
+typedef struct cgen_insn_table {
+ /* Pointer to initial [compiled in] entries. */
+ const struct cgen_insn *init_entries;
+ /* Number of entries in `init_entries', including trailing NULL entry. */
+ unsigned int num_init_entries;
+ /* Values added at runtime. */
+ struct cgen_insn_list *new_entries;
+ /* Assembler hash function. */
+ unsigned int (*asm_hash) PARAMS ((const char *));
+ /* Number of entries in assembler hash table. */
+ unsigned int asm_hash_table_size;
+ /* Disassembler hash function. */
+ unsigned int (*dis_hash) PARAMS ((const char *, unsigned long));
+ /* Number of entries in disassembler hash table. */
+ unsigned int dis_hash_table_size;
+} CGEN_INSN_TABLE;
+
+/* ??? This is currently used by the simulator.
+ We want this to be fast and the simulator currently doesn't handle
+ runtime added instructions so this is ok. An alternative would be to
+ store the index in the table. */
+extern const CGEN_INSN CGEN_SYM (insn_table_entries)[];
+#define CGEN_INSN_INDEX(insn) ((int) ((insn) - CGEN_SYM (insn_table_entries)))
+#define CGEN_INSN_ENTRY(n) (& CGEN_SYM (insn_table_entries) [n])
+
+/* Return number of instructions. This includes any added at runtime. */
+
+int cgen_insn_count PARAMS (());
+
+/* The assembler insn table is hashed based on some function of the mnemonic
+ (the actually hashing done is up to the target, but we provide a few
+ examples like the first letter or a function of the entire mnemonic).
+ The index of each entry is the index of the corresponding table entry.
+ The value of each entry is the index of the next entry, with a 0
+ terminating (thus the first entry is reserved). */
+
+#ifndef CGEN_ASM_HASH
+#ifdef CGEN_MNEMONIC_OPERANDS
+#define CGEN_ASM_HASH_SIZE 127
+#define CGEN_ASM_HASH(string) (*(unsigned char *) (string) % CGEN_ASM_HASH_SIZE)
+#else
+#define CGEN_ASM_HASH_SIZE 128
+#define CGEN_ASM_HASH(string) (*(unsigned char *) (string) % CGEN_ASM_HASH_SIZE) /*FIXME*/
+#endif
+#endif
+
+unsigned int CGEN_SYM (asm_hash_insn) PARAMS ((const char *));
+CGEN_INSN_LIST * cgen_asm_lookup_insn PARAMS ((const char *));
+#define CGEN_ASM_LOOKUP_INSN(insn) cgen_asm_lookup_insn (insn)
+#define CGEN_ASM_NEXT_INSN(insn) ((insn)->next)
+
+/* The disassembler insn table is hashed based on some function of machine
+ instruction (the actually hashing done is up to the target). */
+
+/* It doesn't make much sense to provide a default here,
+ but while this is under development we do.
+ BUFFER is a pointer to the bytes of the insn.
+ INSN is the first CGEN_BASE_INSN_SIZE bytes as an int in host order. */
+#ifndef CGEN_DIS_HASH
+#define CGEN_DIS_HASH_SIZE 256
+#define CGEN_DIS_HASH(buffer, insn) (*(unsigned char *) (buffer))
+#endif
+
+unsigned int CGEN_SYM (dis_hash_insn) PARAMS ((const char *, unsigned long));
+CGEN_INSN_LIST * cgen_dis_lookup_insn PARAMS ((const char *, unsigned long));
+#define CGEN_DIS_LOOKUP_INSN(buf, insn) cgen_dis_lookup_insn (buf, insn)
+#define CGEN_DIS_NEXT_INSN(insn) ((insn)->next)
+\f
+/* Top level structures and functions. */
+
+typedef struct cgen_opcode_data {
+ CGEN_HW_ENTRY *hw_list;
+ /*CGEN_OPERAND_TABLE *operand_table; - FIXME:wip */
+ CGEN_INSN_TABLE *insn_table;
+} CGEN_OPCODE_DATA;
+
+/* Each CPU has one of these. */
+extern CGEN_OPCODE_DATA CGEN_SYM (opcode_data);
+
+/* Global state access macros.
+ Some of these are tucked away and accessed with cover fns.
+ Simpler things like the current machine and endian are not. */
+
+extern int cgen_current_machine;
+#define CGEN_CURRENT_MACHINE cgen_current_machine
+
+extern enum cgen_endian cgen_current_endian;
+#define CGEN_CURRENT_ENDIAN cgen_current_endian
+
+/* Prototypes of major functions. */
+
+/* Set the current cpu (+ mach number, endian, etc.). *?
+void cgen_set_cpu PARAMS ((CGEN_OPCODE_DATA *, int, enum cgen_endian));
+
+/* Initialize the assembler, disassembler. */
+void cgen_asm_init PARAMS ((void));
+void cgen_dis_init PARAMS ((void));
+
+/* `init_tables' must be called before `xxx_supported'. */
+void CGEN_SYM (init_tables) PARAMS ((int));
+void CGEN_SYM (init_asm) PARAMS ((int, enum cgen_endian));
+void CGEN_SYM (init_dis) PARAMS ((int, enum cgen_endian));
+void CGEN_SYM (init_parse) PARAMS ((void));
+void CGEN_SYM (init_print) PARAMS ((void));
+void CGEN_SYM (init_insert) PARAMS ((void));
+void CGEN_SYM (init_extract) PARAMS ((void));
+const struct cgen_insn *
+CGEN_SYM (assemble_insn) PARAMS ((const char *, struct cgen_fields *,
+ cgen_insn_t *));
+int CGEN_SYM (insn_supported) PARAMS ((const struct cgen_syntax *));
+#if 0 /* old */
+int CGEN_SYM (opval_supported) PARAMS ((const struct cgen_opval *));
+#endif
+
+extern const struct cgen_keyword CGEN_SYM (operand_mach);
+int CGEN_SYM (get_mach) PARAMS ((const char *));
+
+CGEN_INLINE void
+CGEN_SYM (put_operand) PARAMS ((int, const long *,
+ struct cgen_fields *));
+CGEN_INLINE long
+CGEN_SYM (get_operand) PARAMS ((int, const struct cgen_fields *));
+
+CGEN_INLINE const char *
+CGEN_SYM (parse_operand) PARAMS ((int, const char **, struct cgen_fields *));
+
+CGEN_INLINE const char *
+CGEN_SYM (validate_operand) PARAMS ((int, const struct cgen_fields *));
+
+/* Default insn parser, printer. */
+extern cgen_parse_fn CGEN_SYM (parse_insn);
+extern cgen_insert_fn CGEN_SYM (insert_insn);
+extern cgen_extract_fn CGEN_SYM (extract_insn);
+extern cgen_print_fn CGEN_SYM (print_insn);
+
+/* Read in a cpu description file. */
+const char * cgen_read_cpu_file PARAMS ((const char *));
+\f
+/* The interface to the assembler is intended to be clean in the sense that
+ libopcodes.a is a standalone entity and could be used with any assembler.
+ Well, that's the intention. Given that, we define an interface between us
+ and the assembler. The interface will obviously be slanted towards gas,
+ but at least it's a start.
+
+ Parsing is controlled by the assembler which calls
+ CGEN_SYM (assemble_insn). If it can parse and build the entire insn
+ it doesn't call back to the assembler. If it needs/wants to call back
+ to the assembler, cgen_asm_parse_operand is called.
+ cgen_asm_parse_operand can either
+ - return a number to be inserted in the insn
+ - return a "register" value to be inserted
+ (the register might not be a register per pe)
+ - queue the argument and return a marker saying the expression has been
+ queued (eg: a fix-up)
+ - return an error message indicating the expression wasn't recognizable
+ After parsing is done, CGEN_SYM (assemble_insn) calls
+ cgen_asm_finish_insn to output the insn and record the relocs.
+*/
+
+/* Call this for each insn to initialize the assembler callback interface. */
+void cgen_asm_insn_init PARAMS ((void));
+
+/* Add a register to the assembler's hash table.
+ This makes lets GAS parse registers for us.
+ ??? This isn't currently used, but it could be in the future. */
+void cgen_asm_record_register PARAMS ((char *, int));
+
+enum cgen_asm_result {
+ CGEN_ASM_NUMBER, CGEN_ASM_REGISTER, CGEN_ASM_QUEUED, CGEN_ASM_ERROR
+};
+
+/* Don't require bfd.h unnecessarily. */
+#ifdef BFD_VERSION
+const char *cgen_asm_parse_operand PARAMS ((const char **, int, int,
+ enum cgen_asm_result *,
+ bfd_vma *));
+#endif
+
+void cgen_asm_finish_insn PARAMS ((const struct cgen_insn *, cgen_insn_t *,
+ unsigned int));
+
+#endif /* CGEN_H */
projects / binutils-gdb.git / commitdiff