diff options
Diffstat (limited to 'include/xtensa-isa-internal.h')
| -rw-r--r-- | include/xtensa-isa-internal.h | 233 |
1 files changed, 175 insertions, 58 deletions
diff --git a/include/xtensa-isa-internal.h b/include/xtensa-isa-internal.h index 7f221eae4..50ac4781c 100644 --- a/include/xtensa-isa-internal.h +++ b/include/xtensa-isa-internal.h @@ -1,5 +1,5 @@ /* Internal definitions for configurable Xtensa ISA support. - Copyright 2003 Free Software Foundation, Inc. + Copyright 2003, 2004 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -17,98 +17,215 @@ 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 +#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 -/* 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 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. */ + 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 opname_lookup_entry_struct +typedef struct xtensa_state_internal_struct { - const char *key; /* Opcode mnemonic. */ - xtensa_opcode opcode; /* Internal opcode number. */ -} opname_lookup_entry; + const char *name; /* State name. */ + int num_bits; /* Number of state bits. */ + uint32 flags; /* See XTENSA_STATE_* flags. */ +} xtensa_state_internal; +typedef struct xtensa_sysreg_internal_struct +{ + 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 -{ - 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 */ |