diff options
Diffstat (limited to 'include/xtensa-isa-internal.h')
| -rw-r--r-- | include/xtensa-isa-internal.h | 233 |
1 files changed, 58 insertions, 175 deletions
diff --git a/include/xtensa-isa-internal.h b/include/xtensa-isa-internal.h index 50ac4781c..7f221eae4 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, 2004 Free Software Foundation, Inc. + Copyright 2003 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -17,215 +17,98 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef XTENSA_ISA_INTERNAL_H -#define XTENSA_ISA_INTERNAL_H +/* Use the statically-linked version for the GNU tools. */ +#define STATIC_LIBISA 1 -/* Flags. */ +#define ISA_INTERFACE_VERSION 3 -#define XTENSA_OPERAND_IS_REGISTER 0x00000001 -#define XTENSA_OPERAND_IS_PCRELATIVE 0x00000002 -#define XTENSA_OPERAND_IS_INVISIBLE 0x00000004 -#define XTENSA_OPERAND_IS_UNKNOWN 0x00000008 - -#define XTENSA_OPCODE_IS_BRANCH 0x00000001 -#define XTENSA_OPCODE_IS_JUMP 0x00000002 -#define XTENSA_OPCODE_IS_LOOP 0x00000004 -#define XTENSA_OPCODE_IS_CALL 0x00000008 - -#define XTENSA_STATE_IS_EXPORTED 0x00000001 +struct config_struct +{ + char *param_name; + char *param_value; +}; -#define XTENSA_INTERFACE_HAS_SIDE_EFFECT 0x00000001 +/* Encode/decode function types for immediate operands. */ +typedef uint32 (*xtensa_immed_decode_fn) (uint32); +typedef xtensa_encode_result (*xtensa_immed_encode_fn) (uint32 *); -/* 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); +/* Field accessor function types. */ 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; + +/* 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 { - 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. */ + 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 reloc. */ + 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_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_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_operand_internal **operands; /* Array of operand structures. */ } xtensa_iclass_internal; + typedef struct xtensa_opcode_internal_struct { const char *name; /* Opcode mnemonic. */ - 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]. */ + 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 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 xtensa_state_internal_struct +typedef struct opname_lookup_entry_struct { - const char *name; /* State name. */ - int num_bits; /* Number of state bits. */ - uint32 flags; /* See XTENSA_STATE_* flags. */ -} xtensa_state_internal; + const char *key; /* Opcode mnemonic. */ + xtensa_opcode opcode; /* Internal opcode number. */ +} opname_lookup_entry; -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_formats; - xtensa_format_internal *formats; - xtensa_format_decode_fn format_decode_fn; - xtensa_length_decode_fn length_decode_fn; - - 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; - + 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; -extern int xtensa_isa_name_compare (const void *, const void *); -extern xtensa_isa_status xtisa_errno; -extern char xtisa_error_msg[]; +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; + +extern xtensa_isa_module xtensa_isa_modules[]; -#endif /* !XTENSA_ISA_INTERNAL_H */ |