s390/kernel/dis.c

34 /* Type of operand */
48 	unsigned char bits;	/* The number of bits in the operand. */
344 /* Extracts an operand value from an instruction.  */
346 				    const struct s390_operand *operand)
352 	/* Extract fragments of the operand byte for byte.  */
353 	cp = code + operand->shift / 8;
354 	bits = (operand->shift & 7) + operand->bits;
362 	val &= ((1U << (operand->bits - 1)) << 1) - 1;
365 	if (operand->bits == 20 && operand->shift == 20)
369 	if (operand->flags & OPERAND_VR) {
370 		if (operand->shift == 8)
372 		else if (operand->shift == 12)
374 		else if (operand->shift == 16)
376 		else if (operand->shift == 32)
380 	/* Sign extend value if the operand is signed or pc relative.  */
381 	if ((operand->flags & (OPERAND_SIGNED | OPERAND_PCREL)) &&
382 	    (val & (1U << (operand->bits - 1))))
383 		val |= (-1U << (operand->bits - 1)) << 1;
385 	/* Double value if the operand is pc relative.	*/
386 	if (operand->flags & OPERAND_PCREL)
390 	if (operand->flags & OPERAND_LENGTH)
428 	const struct s390_operand *operand;
446 			operand = operands + *ops;
447 			value = extract_operand(code, operand);
448 			if ((operand->flags & OPERAND_INDEX)  && value == 0)
450 			if ((operand->flags & OPERAND_BASE) &&
457 			if (operand->flags & OPERAND_GPR)
459 			else if (operand->flags & OPERAND_FPR)
461 			else if (operand->flags & OPERAND_AR)
463 			else if (operand->flags & OPERAND_CR)
465 			else if (operand->flags & OPERAND_VR)
467 			else if (operand->flags & OPERAND_PCREL) {
471 			} else if (operand->flags & OPERAND_SIGNED)
475 			if (operand->flags & OPERAND_DISP)
477 			else if (operand->flags & OPERAND_BASE) {