/* Internal definitions for configurable Xtensa ISA support.
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
+ USA. */
-/* Use the statically-linked version for the GNU tools. */
-#define STATIC_LIBISA 1
+#ifndef XTENSA_ISA_INTERNAL_H
+#define XTENSA_ISA_INTERNAL_H
-#define ISA_INTERFACE_VERSION 3
+/* Flags. */
-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);
+#define XTENSA_OPERAND_IS_REGISTER 0x00000001
+#define XTENSA_OPERAND_IS_PCRELATIVE 0x00000002
+#define XTENSA_OPERAND_IS_INVISIBLE 0x00000004
+#define XTENSA_OPERAND_IS_UNKNOWN 0x00000008
-/* PC-relative relocation function types. */
-typedef uint32 (*xtensa_do_reloc_fn) (uint32, uint32);
-typedef uint32 (*xtensa_undo_reloc_fn) (uint32, uint32);
+#define XTENSA_OPCODE_IS_BRANCH 0x00000001
+#define XTENSA_OPCODE_IS_JUMP 0x00000002
+#define XTENSA_OPCODE_IS_LOOP 0x00000004
+#define XTENSA_OPCODE_IS_CALL 0x00000008
-/* Instruction decode function type. */
-typedef int (*xtensa_insn_decode_fn) (const xtensa_insnbuf);
+#define XTENSA_STATE_IS_EXPORTED 0x00000001
+#define XTENSA_STATE_IS_SHARED_OR 0x00000002
-/* 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);
+#define XTENSA_INTERFACE_HAS_SIDE_EFFECT 0x00000001
+/* Function pointer typedefs */
+typedef void (*xtensa_format_encode_fn) (xtensa_insnbuf);
+typedef void (*xtensa_get_slot_fn) (const xtensa_insnbuf, xtensa_insnbuf);
+typedef void (*xtensa_set_slot_fn) (xtensa_insnbuf, const xtensa_insnbuf);
+typedef int (*xtensa_opcode_decode_fn) (const xtensa_insnbuf);
+typedef uint32 (*xtensa_get_field_fn) (const xtensa_insnbuf);
+typedef void (*xtensa_set_field_fn) (xtensa_insnbuf, uint32);
+typedef int (*xtensa_immed_decode_fn) (uint32 *);
+typedef int (*xtensa_immed_encode_fn) (uint32 *);
+typedef int (*xtensa_do_reloc_fn) (uint32 *, uint32);
+typedef int (*xtensa_undo_reloc_fn) (uint32 *, uint32);
+typedef void (*xtensa_opcode_encode_fn) (xtensa_insnbuf);
+typedef int (*xtensa_format_decode_fn) (const xtensa_insnbuf);
+typedef int (*xtensa_length_decode_fn) (const unsigned char *);
+
+typedef struct xtensa_format_internal_struct
+{
+ const char *name; /* Instruction format name. */
+ int length; /* Instruction length in bytes. */
+ xtensa_format_encode_fn encode_fn;
+ int num_slots;
+ int *slot_id; /* Array[num_slots] of slot IDs. */
+} xtensa_format_internal;
+
+typedef struct xtensa_slot_internal_struct
+{
+ const char *name; /* Not necessarily unique. */
+ const char *format;
+ int position;
+ xtensa_get_slot_fn get_fn;
+ xtensa_set_slot_fn set_fn;
+ xtensa_get_field_fn *get_field_fns; /* Array[field_id]. */
+ xtensa_set_field_fn *set_field_fns; /* Array[field_id]. */
+ xtensa_opcode_decode_fn opcode_decode_fn;
+ const char *nop_name;
+} xtensa_slot_internal;
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. */
+ const char *name;
+ int field_id;
+ xtensa_regfile regfile; /* Register file. */
+ int num_regs; /* Usually 1; 2 for reg pairs, etc. */
+ uint32 flags; /* See XTENSA_OPERAND_* flags. */
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_do_reloc_fn do_reloc; /* Perform a PC-relative reloc. */
xtensa_undo_reloc_fn undo_reloc; /* Undo a PC-relative relocation. */
} xtensa_operand_internal;
+typedef struct xtensa_arg_internal_struct
+{
+ union {
+ int operand_id; /* For normal operands. */
+ xtensa_state state; /* For stateOperands. */
+ } u;
+ char inout; /* Direction: 'i', 'o', or 'm'. */
+} xtensa_arg_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;
+ xtensa_arg_internal *operands; /* Array[num_operands]. */
+ int num_stateOperands; /* Size of "stateOperands" array. */
+ xtensa_arg_internal *stateOperands; /* Array[num_stateOperands]. */
+
+ int num_interfaceOperands; /* Size of "interfaceOperands". */
+ xtensa_interface *interfaceOperands; /* Array[num_interfaceOperands]. */
+} 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. */
+ int iclass_id; /* Iclass for this opcode. */
+ uint32 flags; /* See XTENSA_OPCODE_* flags. */
+ xtensa_opcode_encode_fn *encode_fns; /* Array[slot_id]. */
+ int num_funcUnit_uses; /* Number of funcUnit_use entries. */
+ xtensa_funcUnit_use *funcUnit_uses; /* Array[num_funcUnit_uses]. */
} xtensa_opcode_internal;
+typedef struct xtensa_regfile_internal_struct
+{
+ const char *name; /* Full name of the regfile. */
+ const char *shortname; /* Abbreviated name. */
+ xtensa_regfile parent; /* View parent (or identity). */
+ int num_bits; /* Width of the registers. */
+ int num_entries; /* Number of registers. */
+} xtensa_regfile_internal;
+
+typedef struct xtensa_interface_internal_struct
+{
+ const char *name; /* Interface name. */
+ int num_bits; /* Width of the interface. */
+ uint32 flags; /* See XTENSA_INTERFACE_* flags. */
+ int class_id; /* Class of related interfaces. */
+ char inout; /* "i" or "o". */
+} xtensa_interface_internal;
+
+typedef struct xtensa_funcUnit_internal_struct
+{
+ const char *name; /* Functional unit name. */
+ int num_copies; /* Number of instances. */
+} xtensa_funcUnit_internal;
+
+typedef struct xtensa_state_internal_struct
+{
+ const char *name; /* State name. */
+ int num_bits; /* Number of state bits. */
+ uint32 flags; /* See XTENSA_STATE_* flags. */
+} xtensa_state_internal;
-typedef struct opname_lookup_entry_struct
+typedef struct xtensa_sysreg_internal_struct
{
- const char *key; /* Opcode mnemonic. */
- xtensa_opcode opcode; /* Internal opcode number. */
-} opname_lookup_entry;
+ const char *name; /* Register name. */
+ int number; /* Register number. */
+ int is_user; /* Non-zero if a "user register". */
+} xtensa_sysreg_internal;
+typedef struct xtensa_lookup_entry_struct
+{
+ const char *key;
+ union
+ {
+ xtensa_opcode opcode; /* Internal opcode number. */
+ xtensa_sysreg sysreg; /* Internal sysreg number. */
+ xtensa_state state; /* Internal state number. */
+ xtensa_interface intf; /* Internal interface number. */
+ xtensa_funcUnit fun; /* Internal funcUnit number. */
+ } u;
+} xtensa_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;
+ int num_formats;
+ xtensa_format_internal *formats;
+ xtensa_format_decode_fn format_decode_fn;
+ xtensa_length_decode_fn length_decode_fn;
-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;
+ int num_slots;
+ xtensa_slot_internal *slots;
+
+ int num_fields;
+
+ int num_operands;
+ xtensa_operand_internal *operands;
+
+ int num_iclasses;
+ xtensa_iclass_internal *iclasses;
+
+ int num_opcodes;
+ xtensa_opcode_internal *opcodes;
+ xtensa_lookup_entry *opname_lookup_table;
+
+ int num_regfiles;
+ xtensa_regfile_internal *regfiles;
+
+ int num_states;
+ xtensa_state_internal *states;
+ xtensa_lookup_entry *state_lookup_table;
+
+ int num_sysregs;
+ xtensa_sysreg_internal *sysregs;
+ xtensa_lookup_entry *sysreg_lookup_table;
+
+ /* The current Xtensa ISA only supports 256 of each kind of sysreg so
+ we can get away with implementing lookups with tables indexed by
+ the register numbers. If we ever allow larger sysreg numbers, this
+ may have to be reimplemented. The first entry in the following
+ arrays corresponds to "special" registers and the second to "user"
+ registers. */
+ int max_sysreg_num[2];
+ xtensa_sysreg *sysreg_table[2];
+
+ int num_interfaces;
+ xtensa_interface_internal *interfaces;
+ xtensa_lookup_entry *interface_lookup_table;
+
+ int num_funcUnits;
+ xtensa_funcUnit_internal *funcUnits;
+ xtensa_lookup_entry *funcUnit_lookup_table;
+
+} xtensa_isa_internal;
+
+extern int xtensa_isa_name_compare (const void *, const void *);
-extern xtensa_isa_module xtensa_isa_modules[];
+extern xtensa_isa_status xtisa_errno;
+extern char xtisa_error_msg[];
+#endif /* !XTENSA_ISA_INTERNAL_H */
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