ifpsp060/src/isp.S

9 THE SOFTWARE is provided on an "AS IS" basis and without warranty.
311 set restore_flg,	0x40			# restore -(an)+ flag
333 #	"Unimplemented Integer Instruction" exception in an operating	#
374 # exception stack frame must be converted to an exception stack frame	#
375 # of the correct exception type and an exit must be made through	#
378 # a Trace exception stack frame must be created and an exit made	#
381 # _mem_{read,write}() "callout"s returns a failing value, then an	#
382 # access error frame must be created and an exit made through		#
649 # chk stack frame from an unimplemented integer instruction exception frame
681 # the divide instruction should take an integer divide by zero trap. so, here
682 # we must create a divbyzero stack frame from an unimplemented integer
715 # the divide instruction should take an integer divide by zero trap. so, here
716 # we must create a divbyzero stack frame from an unimplemented integer
821 # this is the exit point if an instruction word read fails.
845 # if the addressing mode was (an)+ or -(an), the address register must
1604 # must create an access error frame. here, we pass a skeleton fslw
1659 	add.w		EXC_EXTWORD(%a6),%a0	# add: an + sgn_ext(disp)
1832 # must create an access error frame. here, we pass a skeleton fslw
1880 # Rn is an address register, it need not be sign extended since the	#
2015 # must create an access error frame. here, we pass a skeleton fslw
2290 # Now calculate an estimate of the quotient words (msw first, then lsw).
2461 # must create an access error frame. here, we pass a skeleton fslw
2464 # (an)+ or -(an) in which case the previous "an" value must be restored.
2696 # must create an access error frame. here, we pass a skeleton fslw
2699 # (an)+ or -(an) in which case the previous "an" value must be restored.
2981 #	This routine can be entered from an access error handler where	#
2985 #	This routine can be entered from an access error handler where	#
2986 # an emulation operand access failed and the operating system would	#
2987 # like an access error stack frame created instead of the current	#
2995 # can be helpful for an operating system to determine whether an access	#
4035 # be an aligned write.