fpu-test.s

操作系统SunOS 4.1.3版本的源码

	st	%f28, [%l2]   
	nop
good:
nogood:
	ld	[%l2], %i0
	
	ret
	restore
				
!	Now for mult
!
_timing_mult_dp:
	save    %sp, -88, %sp           ! save the registers, stacck
        set     wdp, %l0
        set     wdp1, %l1
        set     wdp2, %l2
        set     0x0, %l3
        set     0x3ff00000, %l4         ! put value 1 
        set     0x40340000, %l5         ! put value 20 into local 5
        st      %l5, [%l0]
        st      %l4, [%l1]
        st      %l3, [%l2]
	ld      [%l0], %f30             ! register 30 has 20
	ld	[%l1], %f2		! register  2 has 1
	fmovs   %f30, %f0		! register  0 has 20
	faddd	%f2, %f2, %f10		! register 10 has 2
	fmovs   %f10, %f16		! register 16 has 2
	faddd	%f10, %f16, %f4		! register 4 has 4
	faddd   %f4, %f2, %f6		! register 6 has 5
	fmovs	%f6, %f12		! reg. 12 has 5
	fmovs	%f4, %f14		! reg 14 has 4
	faddd	%f12, %f6, %f18		! reg 18 has 10
	fmovs	%f18, %f8		! reg 8 has 10
!
! 	now everything is set
!
	fmuld   %f0, %f2, %f20          ! reg 20 has 20	
	fmuld	%f4, %f6, %f22          ! reg 22 has 20
	fmuld	%f8, %f10, %f24         ! reg 24 has 20
	fmuld	%f12, %f14, %f26        ! reg 26 has 20
	fmuld	%f16, %f18, %f28        ! reg 28 has 20
!
	fcmpd   %f30, %f20
	nop
	fbe	dm22
	nop
        st      %f20, [%l2]
        ba      nogood
        nop
dm22:
	fcmpd   %f30, %f22
	nop
        fbe     dm24
	nop
        st      %f22, [%l2]      
        ba      nogood
        nop
dm24:
	fcmpd   %f30, %f24     
	nop
        fbe     dm26
        nop
        st      %f24, [%l2]            
        ba      nogood 
        nop    
dm26:
        fcmpd   %f30, %f26     
	nop
        fbe     dm28    
        nop    
        st      %f26, [%l2]            
        ba      nogood 
        nop    
dm28:
        fcmpd   %f30, %f28
	nop
        fbe     good
        nop
        st      %f28, [%l2]   
        nop
	ba	nogood
	nop
!
!

	
	.seg	"text"

	.global _wadd_sp
        .global _wadd_dp
        .global _wdiv_sp
        .global _wdiv_dp
        .global _wmult_sp
        .global _wmult_dp
        .global _wsadd_addr
        .global _wdadd_addr
        .global _wsdiv_addr
        .global _wddiv_addr
        .global _wsmult_addr
        .global _wdmult_addr
        .global _actual_addr
        .global _chain_sp
        .global _chain_dp
 

!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Name:		
! Function:	
! Calling:	
! Returns:	
! Convention:	
!--------------------------------------------------------------------------
! The following routines are for checking the weitek
! status tests.  
!	The input is : i0 = amsw
!		       i1 = bmsw or alsw (for double precision)
!	  	       i2 = bmsw (for dp)
!		       i3 = blsw (for dp)
!
!	The output is  i0 = value of FSR register
!

_wadd_sp:
	save    %sp, -88, %sp
        set     xdp, %l0
        set     xdp1, %l1
	set	xdp2, %l2	
	set	_wsadd_addr, %l3
	set	_actual_addr, %l4
	st	%l3, [%l4]
	st	%i0, [%l0]		! get the first value
	st	%i1, [%l1]		! get the second value
	ld	[%l0], %f0		! f0 has the first value
	ld 	[%l1], %f2		! f2 has the second value
	ld	[%l1], %o3
_wsadd_addr:
	fadds   %f0, %f2, %f3		! now do the instruction
	nop
	nop
	st	%fsr, [%l2]		! get the fsr value
go_back:
	nop
	ld	[%l2], %i0
	ret
	restore
	nop
!
!	same thing for add double precision
!
_wadd_dp:
	save    %sp, -88, %sp
        set     xdp, %l0
        set     xdp1, %l1
        set     xdp2, %l2 
	set     _wdadd_addr, %l3 
        set     _actual_addr, %l4 
        st      %l3, [%l4] 
	st	%i0, [%l0]              ! get the first value
        st      %i1, [%l1]              ! get the lsw of first value
	ld	[%l0], %f0
	ld	[%l1], %f1
	st      %i2, [%l0]              ! get the second value
	st      %i3, [%l1]              ! get the lsw of second value
	ld	[%l0], %f2
	ld	[%l1], %f3
_wdadd_addr:
	faddd	%f0, %f2, %f4		! now do the instruction
	nop
        nop
        st      %fsr, [%l2]             ! get the fsr value 
	ba	go_back
	nop
!
!
!	for divide single precision
!
_wdiv_sp:
	save    %sp, -88, %sp
        set     xdp, %l0
        set     xdp1, %l1
        set     xdp2, %l2        
	set     _wsdiv_addr, %l3 
        set     _actual_addr, %l4 
        st      %l3, [%l4] 
        st      %i0, [%l0]              ! get the first value
        st      %i1, [%l1]              ! get the second value
	st      %fsr, [%l2]
        ld      [%l0], %f0              ! f0 has the first value
        ld      [%l1], %f2              ! f2 has the second value 
_wsdiv_addr: 
        fdivs	%f0, %f2, %f3           ! now do the instruction
	nop
	nop
        st      %fsr, [%l2]             ! get the fsr value 
	ba	go_back
	nop
!
!
!	for divide double precision
!
_wdiv_dp:
	save    %sp, -88, %sp  
        set     xdp, %l0       
        set     xdp1, %l1      
        set     xdp2, %l2      
	set     _wddiv_addr, %l3 
        set     _actual_addr, %l4 
        st      %l3, [%l4] 
        st      %i0, [%l0]              ! get the first value  
        st      %i1, [%l1]              ! get the lsw of first value   
        ld      [%l0], %f0     
        ld      [%l1], %f1     
        st      %i2, [%l0]              ! get the second value 
        st      %i3, [%l1]              ! get the lsw of second value  
        ld      [%l0], %f2     
        ld      [%l1], %f3     
_wddiv_addr: 
        fdivd	%f0, %f2, %f4           ! now do the instruction       
        nop
        nop    
        st      %fsr, [%l2]             ! get the fsr value    
        ba      go_back
	nop
!
!
!       for multiply single precision   
!
_wmult_sp:
	save    %sp, -88, %sp 
        set     xdp, %l0 
        set     xdp1, %l1 
        set     xdp2, %l2         
	set     _wsmult_addr, %l3 
        set     _actual_addr, %l4 
        st      %l3, [%l4] 

        st      %i0, [%l0]              ! get the first value 
        st      %i1, [%l1]              ! get the second value 
        ld      [%l0], %f0              ! f0 has the first value 
        ld      [%l1], %f2              ! f2 has the second value  
_wsmult_addr:  
        fmuls   %f0, %f2, %f3           ! now do the instruction
        nop 
        nop 
        st      %fsr, [%l2]             ! get the fsr value  
        ba      go_back 
	nop
! 
! 
!       for multiply double precision 
! 
_wmult_dp: 
        save    %sp, -88, %sp   
        set     xdp, %l0        
        set     xdp1, %l1       
        set     xdp2, %l2       
	set     _wdmult_addr, %l3 
        set     _actual_addr, %l4 
        st      %l3, [%l4] 

        st      %i0, [%l0]              ! get the first value   
        st      %i1, [%l1]              ! get the lsw of first value    
        ld      [%l0], %f0      
        ld      [%l1], %f1      
        st      %i2, [%l0]              ! get the second value  
        st      %i3, [%l1]              ! get the lsw of second value   
        ld      [%l0], %f2      
        ld      [%l1], %f3      
_wdmult_addr:  
        fmuld	 %f0, %f2, %f4           ! now do the instruction         
        nop    
        nop    
        st      %fsr, [%l2]             ! get the fsr value    
        ba      go_back
	nop
!
!	
!	Chaining test.
!	 
_chain_sp:
	save    %sp, -88, %sp
        set     xdp, %l0
        set     xdp1, %l1
	st	%i0, [%l0]	! store the value
	ld	[%l0], %f0
	fitos   %f0, %f2	! convert integer into single
	fmovs   %f2, %f0	! f0 has the same value  x
	fadds	%f0, %f2, %f4   ! f4 will have 2x
	fsubs   %f4, %f0, %f6   ! f6 will have x
	fmuls   %f6, %f4, %f8   ! f8 will have (2x * x)
	fdivs   %f8, %f4, %f10  ! f10 will have (2x * x) / 2x = x
	fstoi	%f10, %f12
_ch_done:
	st	%f12, [%l1]
	ld	[%l1], %i0

	ret
        restore


!
!
_chain_dp:
	save    %sp, -88, %sp
        set     xdp, %l0
        set     xdp1, %l1
        st      %i0, [%l0]      ! store the value
        ld      [%l0], %f0
        fitod   %f0, %f2        ! convert integer into double
	fmovs   %f2, %f0        ! f0 has the same value  x
        faddd   %f0, %f2, %f4   ! f4 will have 2x
        fsubd   %f4, %f0, %f6   ! f6 will have x
        fmuld   %f6, %f4, %f8   ! f8 will have (2x * x)
        fdivd   %f8, %f4, %f10  ! f10 will have (2x * x) / 2x = x
        fdtoi   %f10, %f12
	ba	_ch_done
!
!
	nop
!

	.seg    "data"
        .align  4
xdp:
        .word 1                 /* storage location for a single precision */
xdp1:
        .word 1                 /* storage for double precision */
xdp2:
        .word 1                 /* storage for extended */
xp_result:
        .word 2
 
_actual_addr:
        .word   2
	 
	
	
	
        .seg	"text"

	
	.global	_fpu_soft_trap
	.global _fp_addr
	.global _fsr_data
	.global _donot_dq
	.global _seqerr_trap


!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Name:		
! Function:	
! Calling:	
! Returns:	
! Convention:	
!--------------------------------------------------------------------------
_fpu_soft_trap:
	save    %sp, -88, %sp
	set     _fwp, %l1
	set     _fp_addr, %l2 
	set	_fsr_data, %l3
	set	0x1, %l5		! set the flag that trap occured
	set	_donot_dq, %l6
	st	%l5, [%l4]		! set the flag
	st	%fsr, [%l3]		! store the fsr data
	ld	[%l6], %i0
	cmp     %i0, %l5		! check whether bit is set for
	be	no_que
	nop		
	std    %fq, [%l2]  
        std    %fq, [%l1]
!*	std    %fq, [%l1]
	st     %fsr, [%l1]
	ld      [%l1], %i0
!
no_que:	
!*	st	%fsr, [%l1]
!*	ld	[%l1], %i0 
	ret
	restore

!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Name:		
! Function:	
! Calling:	
! Returns:	
! Convention:	
!--------------------------------------------------------------------------
!
!	This routine is to create the seqerror trap only 
!	just uses an floating point operation and does not
!	do anything.
!
_seqerr_trap:
	save    %sp, -88, %sp
	set	_fwp, %l1
	ld      [%l1], %f0		! just do some fpu instruction
	st	%fsr, [%l1]
	nop
	nop
	ld	[%l1], %i0

	ret
        restore

	.seg	"data"
_fp_addr:
        .word   2
_fsr_data:
        .word   2
_donot_dq:
        .word   2
_fwp:
        .word   1
_fwp1:
        .word   1

	.seg    "text"
!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Name:		Clear all Registers
! Function:	Loads the callers value into all floating point registers.
! Calling:	in0 = Value
! Returns:	All float register = Value
! Convention:	clear_regs(0);
! Method:	Copys the user value into each floa reg in sequence.
!--------------------------------------------------------------------------
_clear_regs:
	save    %sp, -88, %sp	! save the registers, stack
        set     temp2, %l0	! load the address of temp2 in local0
	st	%i0, [%l0]	! load the value in temp2 via local0
	ld	[%l0], %f0	! .. load the value
	ld	[%l0], %f1	! .. load the value
        ld      [%l0], %f2	! .. load the value
        ld      [%l0], %f3	! .. load the value
        ld      [%l0], %f4	! .. load the value
	ld	[%l0], %f5	! .. load the value
        ld      [%l0], %f6 	! .. load the value
        ld      [%l0], %f7 	! .. load the value
        ld      [%l0], %f8 	! .. load the value
        ld      [%l0], %f9 	! .. load the value
        ld      [%l0], %f10 	! .. load the value
        ld      [%l0], %f11 	! .. load the value
        ld      [%l0], %f12 	! .. load the value
        ld      [%l0], %f13 	! .. load the value
        ld      [%l0], %f14 	! .. load the value
        ld      [%l0], %f15 	! .. load the value
        ld      [%l0], %f16 	! .. load the value
        ld      [%l0], %f17 	! .. load the value
        ld      [%l0], %f18 	! .. load the value
        ld      [%l0], %f19 	! .. load the value
        ld      [%l0], %f20 	! .. load the value
        ld      [%l0], %f21 	! .. load the value
        ld      [%l0], %f22 	! .. load the value
        ld      [%l0], %f23 	! .. load the value
        ld      [%l0], %f24 	! .. load the value
        ld      [%l0], %f25 	! .. load the value
        ld      [%l0], %f26 	! .. load the value
        ld      [%l0], %f27 	! .. load the value
        ld      [%l0], %f28 	! .. load the value
        ld      [%l0], %f29 	! .. load the value
        ld      [%l0], %f30 	! .. load the value
        ld      [%l0], %f31	! .. load the value
	ret
        restore

!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Name:		
! Function:	
! Calling:	
! Returns:	
! Convention:	
!--------------------------------------------------------------------------
_register_test:
	save    %sp, -88, %sp
	set	temp, %l0
	set	temp1, %l1
	set	temp2,%l2
	set     0x0,  %l3               !reg has register number
	st	%i0,  [%l0]		!save the register number
	st	%i1,  [%l1]		!save the pattern to be written

	cmp	%i0, %l3		! == 0
	be	reg0
	inc	%l3
	cmp	%i0, %l3		! == 1
	be	reg1
	inc	%l3
	cmp	%i0, %l3		! == 2
	be	reg2
	inc	%l3
	cmp	%i0, %l3		! == 3
	be	reg3
	inc	%l3
	cmp	%i0, %l3		! == 4
	be	reg4
	inc	%l3
	cmp	%i0, %l3		! == 5
        be      reg5
	inc     %l3      
        cmp     %i0, %l3                ! == 5 
        be      reg6
	inc     %l3      
        cmp     %i0, %l3                ! == 7 
        be      reg7
	inc     %l3      
        cmp     %i0, %l3                ! == 8 
        be      reg8
	inc     %l3      
        cmp     %i0, %l3                ! == 9 
        be      reg9
	inc     %l3      
        cmp     %i0, %l3                ! == 10 
        be      reg10
	inc     %l3      
        cmp     %i0, %l3                ! == 11 
        be      reg11
	inc     %l3      
        cmp     %i0, %l3                ! == 12 
        be      reg12
	inc     %l3      
        cmp     %i0, %l3                ! == 13 
        be      reg13
	inc     %l3      
        cmp     %i0, %l3                ! == 14 
        be      reg14
	inc     %l3      
        cmp     %i0, %l3                ! == 15 
        be      reg15
	inc     %l3      
        cmp     %i0, %l3                ! == 16 
        be      reg16
	inc     %l3      
        cmp     %i0, %l3                ! == 17 
        be      reg17
	inc     %l3      
        cmp     %i0, %l3                ! == 18 
        be      reg18	
	inc     %l3            
        cmp     %i0, %l3                ! == 19