/*****************************************************************************/
/* */
-/* opcodes.h */
+/* opcodes.h */
/* */
-/* Opcode and addressing mode definitions */
+/* Opcode and addressing mode definitions */
/* */
/* */
/* */
-/* (C) 2001 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
+/* (C) 2001-2004 Ullrich von Bassewitz */
+/* Römerstraße 52 */
+/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/*****************************************************************************/
-/* Data */
+/* Data */
/*****************************************************************************/
-/* Definitions for the possible opcodes */
+/* 65XX opcodes */
typedef enum {
-
- /* Opcodes for the virtual stack machine */
- OPC_CALL,
- OPC_ENTER,
- OPC_JMP,
- OPC_LDA,
- OPC_LDAX,
- OPC_LDEAX,
- OPC_LEA,
- OPC_LEAVE,
- OPC_PHA,
- OPC_PHAX,
- OPC_PHEAX,
- OPC_RET,
- OPC_SPACE,
- OPC_STA,
- OPC_STAX,
- OPC_STEAX,
-
- /* 65XX opcodes */
OP65_ADC,
OP65_AND,
OP65_ASL,
OP65_STA,
OP65_STX,
OP65_STY,
+ OP65_STZ,
OP65_TAX,
OP65_TAY,
OP65_TRB,
OP65_TYA,
/* Number of opcodes available */
- OPCODE_COUNT,
-
- /* Several other opcode information constants */
- OP65_FIRST = OP65_ADC,
- OP65_LAST = OP65_TYA,
- OP65_COUNT = OP65_LAST - OP65_FIRST + 1
+ OP65_COUNT
} opc_t;
-/* Addressing modes */
+/* 65XX addressing modes */
typedef enum {
-
- /* Addressing modes of the virtual stack machine */
- AM_IMP,
- AM_IMM,
- AM_STACK,
- AM_ABS,
-
- /* 65XX addressing modes */
- AM65_IMP, /* implicit */
- AM65_ACC, /* accumulator */
- AM65_IMM, /* immidiate */
- AM65_ZP, /* zeropage */
- AM65_ZPX, /* zeropage,X */
+ AM65_IMP, /* implicit */
+ AM65_ACC, /* accumulator */
+ AM65_IMM, /* immidiate */
+ AM65_ZP, /* zeropage */
+ AM65_ZPX, /* zeropage,X */
AM65_ZPY, /* zeropage,Y */
- AM65_ABS, /* absolute */
- AM65_ABSX, /* absolute,X */
- AM65_ABSY, /* absolute,Y */
- AM65_ZPX_IND, /* (zeropage,x) */
- AM65_ZP_INDY, /* (zeropage),y */
- AM65_ZP_IND, /* (zeropage) */
+ AM65_ABS, /* absolute */
+ AM65_ABSX, /* absolute,X */
+ AM65_ABSY, /* absolute,Y */
+ AM65_ZPX_IND, /* (zeropage,x) */
+ AM65_ZP_INDY, /* (zeropage),y */
+ AM65_ZP_IND, /* (zeropage) */
AM65_BRA /* branch */
} am_t;
} bc_t;
/* Opcode info */
-#define OF_NONE 0x0000U /* No additional information */
-#define OF_CPU_6502 0x0000U /* 6502 opcode */
-#define OF_CPU_VM 0x0001U /* Virtual machine opcode */
-#define OF_MASK_CPU 0x0001U /* Mask for the cpu field */
-#define OF_UBRA 0x0010U /* Unconditional branch */
-#define OF_CBRA 0x0020U /* Conditional branch */
-#define OF_ZBRA 0x0040U /* Branch on zero flag condition */
-#define OF_FBRA 0x0080U /* Branch on cond set by a load */
-#define OF_LBRA 0x0100U /* Jump/branch is long */
-#define OF_RET 0x0200U /* Return from function */
-#define OF_LOAD 0x0400U /* Register load */
-#define OF_STORE 0x0800U /* Register store */
-#define OF_XFR 0x1000U /* Transfer instruction */
-#define OF_CALL 0x2000U /* A subroutine call */
+#define OF_NONE 0x0000U /* No additional information */
+#define OF_UBRA 0x0001U /* Unconditional branch */
+#define OF_CBRA 0x0002U /* Conditional branch */
+#define OF_ZBRA 0x0004U /* Branch on zero flag condition */
+#define OF_FBRA 0x0008U /* Branch on cond set by a load */
+#define OF_LBRA 0x0010U /* Jump/branch is long */
+#define OF_RET 0x0020U /* Return from function */
+#define OF_LOAD 0x0040U /* Register load */
+#define OF_STORE 0x0080U /* Register store */
+#define OF_XFR 0x0100U /* Transfer instruction */
+#define OF_CALL 0x0200U /* A subroutine call */
+#define OF_REG_INCDEC 0x0400U /* A register increment or decrement */
+#define OF_SETF 0x0800U /* Insn will set all load flags (not carry) */
+#define OF_CMP 0x1000U /* A compare A/X/Y instruction */
+#define OF_NOIMP 0x2000U /* Implicit addressing mode is actually A */
/* Combined infos */
-#define OF_BRA (OF_UBRA | OF_CBRA) /* Operation is a jump/branch */
-#define OF_DEAD (OF_UBRA | OF_RET) /* Dead end - no exec behind this point */
+#define OF_BRA (OF_UBRA | OF_CBRA) /* Operation is a jump/branch */
+#define OF_DEAD (OF_UBRA | OF_RET) /* Dead end - no exec behind this point */
/* Opcode description */
typedef struct {
- opc_t OPC; /* Opcode */
- char Mnemo[9]; /* Mnemonic */
- unsigned char Size; /* Size, 0 = check addressing mode */
- unsigned char Use; /* Registers used by this insn */
- unsigned char Chg; /* Registers changed by this insn */
- unsigned short Info; /* Additional information */
+ opc_t OPC; /* Opcode */
+ char Mnemo[9]; /* Mnemonic */
+ unsigned char Size; /* Size, 0 = check addressing mode */
+ unsigned short Use; /* Registers used by this insn */
+ unsigned short Chg; /* Registers changed by this insn */
+ unsigned short Info; /* Additional information */
} OPCDesc;
/* Opcode description table */
-extern const OPCDesc OPCTable[OPCODE_COUNT];
+extern const OPCDesc OPCTable[OP65_COUNT];
/*****************************************************************************/
-/* Code */
+/* Code */
/*****************************************************************************/
return &OPCTable [OPC];
}
#else
-# define GetOPCDesc(OPC) (&OPCTable [(OPC)])
+# define GetOPCDesc(OPC) (&OPCTable [(OPC)])
#endif
#if defined(HAVE_INLINE)
return OPCTable[OPC].Info;
}
#else
-# define GetOPCInfo(OPC) (OPCTable[(OPC)].Info)
+# define GetOPCInfo(OPC) (OPCTable[(OPC)].Info)
#endif
unsigned char GetAMUseInfo (am_t AM);
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