opcode_core.h File Reference
#include "opcode_gen_core.h"
Go to the source code of this file.
Defines | |
| #define | opcode_core_INCLUDED "opcode_core.h" |
Define Documentation
| #define opcode_core_INCLUDED "opcode_core.h" |
Opcodes, Opcode Types, and Opcode Flags ---------------------------------------
Description:
This interface describes all the opcode names, operators, types associated with opcodes, and properties associated with opcodes. The files opcode_gen_core.h and opcode_gen_core.c are generated by running './opcodegen', which uses perl prodecure calls to encode all legal opcodes and types in a tabular form.
This code require absolutely no includes to use, and is thus useful for programs other than the compiler proper.
Reserved Prefixes:
OPC for OPCODE members only. OPR for OPERATOR members only. OPCODE for other opcode information, e.g. external function names. OPERATOR for the operator, i.e. untyped operation
Exported types:
OPCODE
An enumerated type. The members are generated automatically. All OPCODEs are prefixed with OPC.
OPCODE has the following fields:
const OPERATOR operator
The operator for this opcode. E.g. OPCODE_operator(OPC_F8ADD) is OPR_ADD.
const TYPE_ID rtype
The 'return type' of this opcode. E.g. OPCODE_rtype(OPC_F8ADD) is MTYPE_F8.
const TYPE_ID desc
The 'descriptor type' of this opcode. E.g. OPCODE_desc(OPC_F8ADD) is MTYPE_V.
An opcode is fully and uniquely defined by these three components.
OPERATOR
An enumerated type representing the operator. These are all prefixed with OPR.
OPCODE_MAPCAT
The annotation category for opcodes, one of
OPCODE_MAPCAT_HDR OPCODE_MAPCAT_SCF OPCODE_MAPCAT_LDST OPCODE_MAPCAT_PRAGMA OPCODE_MAPCAT_OSTMT OPCODE_MAPCAT_OEXP OPCODE_MAPCAT_ARRAY OPCODE_MAPCAT_CALL
These are an enumerated type, the first value of which is 0. There are WN_MAP_CATEGORIES values, 0 through WN_MAP_CATEGORIES-1.
Exported data:
Commonly, these data structures would be used by opcode.h and opcode.c to look up interesting information. However, they are provided separately because there is demand for them.
struct OPCODE_gop_info_struct { char name[16]; OPCODE first; OPCODE last; } OPCODE_gop_info[];
Used to look up information about a OPERATOR: what the first opcode and last opcode are for that operator, and the ascii representation of the operator.
extern struct OPCODE_info_struct { char _name[20]; mUINT16 _operator; mUINT8 _rtype; mUINT8 _desc; mINT8 nkids; mUINT16 wnfields; mUINT16 _flags; } OPCODE_info[];
Used to look up information about an OPCODE: the ascii name, the "operator", the "return type" and "descriptor type" of the opcode, the number of kids (-1 if unknown) and the flags that define the boolean properties, currently
OPCODE_PROPERTY_scf structured control flow OPCODE_PROPERTY_stmt statement OPCODE_PROPERTY_expression expression OPCODE_PROPERTY_leaf nkids is zero OPCODE_PROPERTY_store is a store OPCODE_PROPERTY_load is a load OPCODE_PROPERTY_call is a call OPCODE_PROPERTY_compare is a comparison OPCODE_PROPERTY_non_scf control flow, but not scf OPCODE_PROPERTY_boolean boolean returns, e.g. GE
Definition at line 151 of file opcode_core.h.
