/* How far the operand is left shifted in the instruction. */
int shift;
+ /* Insertion function. This is used by the assembler. To insert an
+ operand value into an instruction, check this field.
+
+ If it is NULL, execute
+ i |= (op & ((1 << o->bits) - 1)) << o->shift;
+ (i is the instruction which we are filling in, o is a pointer to
+ this structure, and op is the opcode value; this assumes twos
+ complement arithmetic).
+
+ If this field is not NULL, then simply call it with the
+ instruction and the operand value. It will return the new value
+ of the instruction. If the ERRMSG argument is not NULL, then if
+ the operand value is illegal, *ERRMSG will be set to a warning
+ string (the operand will be inserted in any case). If the
+ operand value is legal, *ERRMSG will be unchanged (most operands
+ can accept any value). */
+ unsigned long (*insert) PARAMS ((unsigned long instruction, long op,
+ const char **errmsg));
+
+ /* Extraction function. This is used by the disassembler. To
+ extract this operand type from an instruction, check this field.
+
+ If it is NULL, compute
+ op = ((i) >> o->shift) & ((1 << o->bits) - 1);
+ if ((o->flags & PPC_OPERAND_SIGNED) != 0
+ && (op & (1 << (o->bits - 1))) != 0)
+ op -= 1 << o->bits;
+ (i is the instruction, o is a pointer to this structure, and op
+ is the result; this assumes twos complement arithmetic).
+
+ If this field is not NULL, then simply call it with the
+ instruction value. It will return the value of the operand. If
+ the INVALID argument is not NULL, *INVALID will be set to
+ non-zero if this operand type can not actually be extracted from
+ this operand (i.e., the instruction does not match). If the
+ operand is valid, *INVALID will not be changed. */
+ long (*extract) PARAMS ((unsigned long instruction, int *invalid));
+
+ /* One bit syntax flags. */
int flags;
};
extern const struct v850_operand v850_operands[];
/* Values defined for the flags field of a struct v850_operand. */
-#define OPERAND_NUM 1 /* number or symbol */
-#define OPERAND_REG 2 /* register */
+/* This operand names a general purpose register */
+#define V850_OPERAND_REG 0x01
+/* This operand names a system register */
+#define V850_OPERAND_SRG 0x02
+
+/* This operand names a condition code used in the setf instruction */
+#define V850_OPERAND_CC 0x04
+
+/* This operand takes signed values */
+#define V850_OPERAND_SIGNED 0x08
#endif /* V850_H */