ifpsp060/src/pfpsp.S

384 set EXC_OPWORD,		LV+0			# saved operation word
452 set aiop_bit,		7			# accrued inexact operation bit
480 set aiop_mask,		0x00000080		# accrued illegal operation
615 # default result should be for the operation. This default result is	#
673 	btst		&0x5,1+EXC_CMDREG(%a6)	# is operation monadic or dyadic?
714 # the operation has been emulated. the result is in fp0.
855 # default result should be for the operation. This default result is	#
961 # multiply operation is the smallest possible normalized number
964 # if our emulation, after re-doing the operation, decided that
994 # multiply operation is the smallest possible normalized number
997 # if our emulation, after re-doing the operation, decided that
1022 # multiply operation is the smallest possible normalized number
1259 # Opclass two w/ memory-to-fpn operation will have an incorrect extended
1281 	btst		&0x5,1+EXC_CMDREG(%a6)	# is operation monadic or dyadic?
1283 	cmpi.b		1+EXC_CMDREG(%a6),&0x3a	# is operation an ftst?
1425 # If the input operand to this operation was opclass two and a single
1826 	btst		&0x5,1+EXC_CMDREG(%a6)	# is operation monadic or dyadic?
1828 	cmpi.b		1+EXC_CMDREG(%a6),&0x3a	# is operation an ftst?
2422 # as a result of this operation emulation. A Trace exception can be	#
2479 	tst.w		%d0			# is operation fmovem?
2561 	btst		&0x5,1+EXC_CMDREG(%a6)	# is operation monadic or dyadic?
2563 	btst		&0x4,1+EXC_CMDREG(%a6)	# is operation fsincos,ftst,fcmp?
2579 # the operation is fsincos, ftst, or fcmp. only fcmp is dyadic
2581 	btst		&0x3,1+EXC_CMDREG(%a6)	# is operation fsincos?
2586 	btst		&0x1,1+EXC_CMDREG(%a6)	# is operation fcmp?
2622 # now, we save the result, unless, of course, the operation was ftst or fcmp.
3530 # the operation was "fmove.x SNAN,-(a7)" from supervisor mode.
3655 	btst		&0x5,1+EXC_CMDREG(%a6)	# is operation monadic or dyadic?
3658 	btst		&0x4,1+EXC_CMDREG(%a6)	# is operation an fsincos?
3685 # the operation has been emulated. the result is in fp0.
4071 # math operation relative to the address of this table. Included are
4075 # operation longword.
4284 # if the bit string is a zero, then the operation is a no-op
4313 # the operation was unfortunately an: fmovm.x dn,-(sp)
4483 # table indexed by the operation's bit string that gives the number
5562 #		      fsqrt operation won't take an exception.		#
5703 #	If either operand (but not both operands) of an operation is a	#
5707 #	If either operand to an operation is a signalling NAN (SNAN),	#
5712 # SNAN bit in the operand to one), and the operation continues as	#
6104 # last operation done was an "and" of the bits shifted off so the condition
8047 # - the result of the multiply operation will neither overflow nor underflow.
8082 # - the result of the multiply operation is an overflow.
8087 # extended precision. if the original operation was extended, then we have this
8088 # result. if the original operation was single or double, we have to do another
8090 # of this operation then has its exponent scaled by -0x6000 to create the
8166 # - the result of the multiply operation MAY overflow.
8193 # - the result of the multiply operation is an underflow.
8198 # extended precision. if the original operation was extended, then we have this
8199 # result. if the original operation was single or double, we have to do another
8201 # of this operation then has its exponent scaled by -0x6000 to create the
8303 # a normalized number that rounded down to a 2. so, redo the entire operation
9048 # the divide operation MAY underflow:
9072 # operation using RZ as the rounding mode to see what the pre-rounded
9639 #	res_{s,q}nan_1op() - set NAN result for monadic operation	#
9745 #	res_{s,q}nan_1op() - set NAN result for monadic operation	#
9853 #	res_{s,q}nan_1op() - set NAN result for monadic operation	#
10598 # a normalized number that rounded down to a 2. so, redo the entire operation
10911 # the divide operation MAY underflow:
10935 # operation using RZ as the rounding mode to see what the pre-rounded
12972 #	Note: this operation can never overflow.			#
12978 #	Note: this operation can never overflow.			#
13450 #		The operation in A3 above may have set INEX2.		#
13475 #		The operation in A3 above may have set INEX2.		#
13476 #		RZ mode is forced for the scaling operation to insure	#
13491 #		Perform FINT operation in the user's rounding mode.	#
13499 #		If the int operation results in more than LEN digits,	#
13671 #     The operation in A3 above may have set INEX2.
13844 #     The operation in A3 above may have set INEX2.
13845 #     RZ mode is forced for the scaling operation to insure
13982 #      Perform FINT operation in the user's rounding mode.  Keep
14054 #      If the int operation results in more than LEN digits,