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dbgbrk64.asm
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dbgbrk64.asm
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; '$Header: P:/PVCS/MAX/STATUTIL/DBGBRK.ASV 1.0 25 Sep 1996 10:14:50 BOB $
TITLE DBGBRK.ASM
CPUFLAGS record $ID:1,$VIP:1,$VIF:1,$ACHI:1,$VMHI:1,$RFHI:1, \
$R0:1,$NT:1,$IOPL:2,$OF:1,$DF:1,$IF:1,$TF:1,$SF:1,$ZF:1,$R1:1,$AF:1,$R2:1,$PF:1,$R3:1,$CF:1
.code
public iAsmAdd64
iAsmAdd64 proc ; Start iAsmAdd64 procedure
COMMENT|
Add two signed 64-bit numbers,
handling overflow.
On entry:
Rdx = left arg
R8 = right arg
Rcx = ptr to result
On exit:
Rax = 1 if successful
= 0 if not
|
mov Rax,Rdx ; Copy left arg
add Rax,R8 ; Plus the right arg
; setting OF on error
mov qword ptr [Rcx],Rax ; Save in the result
mov Rax,0 ; Clear the result
setno al ; Return 0 or 1 from the <add>
ret ; Return to caller
iAsmAdd64 endp ; End iAsmAdd64 procedure
public iAsmSub64
iAsmSub64 proc ; Start iAsmSub64 procedure
COMMENT|
Subtract two signed 64-bit numbers,
handling overflow.
On entry:
Rdx = left arg
R8 = right arg
Rcx = ptr to result
On exit:
Rax = 1 if successful
= 0 if not
|
mov Rax,Rdx ; Copy left arg
sub Rax,R8 ; Less the right arg
; setting OF on error
mov qword ptr [Rcx],Rax ; Save in the result
mov Rax,0 ; Clear the result
setno al ; Return 0 or 1 from the <sub>
ret ; Return to caller
iAsmSub64 endp ; End iAsmSub64 procedure
public iAsmMul64
iAsmMul64 proc ; Start iAsmMul64 procedure
COMMENT|
Multiply two signed 64-bit numbers,
handling overflow.
On entry:
Rdx = left arg
R8 = right arg
Rcx = ptr to result
On exit:
Rax = 1 if successful
= 0 if not
|
push Rdx ; Save register clobbered by <imul>
mov Rax,Rdx ; Copy left arg
imul R8 ; Times the right arg
; producing Rdx:Rax
; and setting OF and CF on error
mov qword ptr [Rcx],Rax ; Save in the result
mov Rax,0 ; Clear the result
setno al ; Return 0 or 1 from the <imul>
pop Rdx ; Restore
ret ; Return to caller
iAsmMul64 endp ; End iAsmMul64 procedure
public iAsmMulPiInt
iAsmMulPiInt proc ; Start iAsmMulPiInt procedure
COMMENT|
Multiply a signed 64-bit number by Pi.
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
(Nothing)
|
finit ; Initialize the FPU
fldpi ; Load Pi
fild qword ptr [Rdx] ; Load the integer right arg
fmulp st(1),st(0) ; Multiply 'em
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmMulPiInt endp ; End iAsmMulPiInt procedure
public iAsmMulPiFlt
iAsmMulPiFlt proc ; Start iAsmMulPiFlt procedure
COMMENT|
Multiply a signed 64-bit number by Pi.
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
(Nothing)
|
finit ; Initialize the FPU
fldpi
fld qword ptr [Rdx] ; Load the float right arg
fmulp st(1),st(0) ; Multiply 'em
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmMulPiFlt endp ; End iAsmMulPiFlt procedure
public iAsmCircle4Int
iAsmCircle4Int proc ; Start iAsmCircle4Int procedure
COMMENT|
Compute (1 + R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fld st(0) ; R R
fmulp st(1),st(0) ; R*R
fld1 ; 1 R*R
faddp st(1),st(0) ; 1+R*R
fsqrt ; (1+R*R)*0.5
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle4Int endp ; End iAsmCircle4Int procedure
public iAsmCircle4Flt
iAsmCircle4Flt proc ; Start iAsmCircle4Flt procedure
COMMENT|
Compute (1 + R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fld st(0) ; R R
fmulp st(1),st(0) ; R*R
fld1 ; 1 R*R
faddp st(1),st(0) ; 1+R*R
fsqrt ; (1+R*R)*0.5
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle4Flt endp ; End iAsmCircle4Flt procedure
public iAsmCircle3Int
iAsmCircle3Int proc ; Start iAsmCircle3Int procedure
COMMENT|
Compute tan(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fsincos ; cos(R) sin(R)
fdivp st(1),st(0) ; tan(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle3Int endp ; End iAsmCircle3Int procedure
public iAsmCircle3Flt
iAsmCircle3Flt proc ; Start iAsmCircle3Flt procedure
COMMENT|
Compute tan(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fsincos ; cos(R) sin(R)
fdivp st(1),st(0) ; tan(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle3Flt endp ; End iAsmCircle3Flt procedure
public iAsmCircle2Int
iAsmCircle2Int proc ; Start iAsmCircle2Int procedure
COMMENT|
Compute cos(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fcos ; cos(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle2Int endp ; End iAsmCircle2Int procedure
public iAsmCircle2Flt
iAsmCircle2Flt proc ; Start iAsmCircle2Flt procedure
COMMENT|
Compute cos(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fcos ; cos(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle2Flt endp ; End iAsmCircle2Flt procedure
public iAsmCircle1Int
iAsmCircle1Int proc ; Start iAsmCircle1Int procedure
COMMENT|
Compute sin(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fsin ; sin(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle1Int endp ; End iAsmCircle1Int procedure
public iAsmCircle1Flt
iAsmCircle1Flt proc ; Start iAsmCircle1Flt procedure
COMMENT|
Compute sin(R)
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fsin ; sin(R)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle1Flt endp ; End iAsmCircle1Flt procedure
public iAsmCircle0Int
iAsmCircle0Int proc ; Start iAsmCircle0Int procedure
COMMENT|
Compute (1 - R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fld st(0) ; R R
fmulp st(1),st(0) ; R*R
fchs ; -R*R
fld1 ; 1 -R*R
faddp st(1),st(0) ; 1-R*R
fsqrt ; (1-R*R)*0.5
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle0Int endp ; End iAsmCircle0Int procedure
public iAsmCircle0Flt
iAsmCircle0Flt proc ; Start iAsmCircle0Flt procedure
COMMENT|
Compute (1 - R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fld st(0) ; R R
fmulp st(1),st(0) ; R*R
fchs ; -R*R
fld1 ; 1 -R*R
faddp st(1),st(0) ; 1-R*R
fsqrt ; (1-R*R)*0.5
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircle0Flt endp ; End iAsmCircle0Flt procedure
public iAsmCircleN4Int
iAsmCircleN4Int proc ; Start iAsmCircleN4Int procedure
COMMENT|
Compute (R + 1) × sqrt ((R - 1) / (R + 1))
a.k.a. ((-1) + R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fild qword ptr [Rdx] ; Load the integer right arg
fld st(0) ; R R
fld1 ; 1 R R
faddp st(1),st(0) ; R+1 R
fld1 ; 1 R+1 R
fsubp st(2),st(0) ; R-1 R+1
fld st(1) ; R+1 R-1 R+1
fdivp st(1),st(0) ; (R-1)/(R+1) R+1
fsqrt ; sqrt(...) R+1
fmulp st(1),st(0) ; sqrt(...) * (R+1)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircleN4Int endp ; End iAsmCircleN4Int procedure
public iAsmCircleN4Flt
iAsmCircleN4Flt proc ; Start iAsmCircleN4Flt procedure
COMMENT|
Compute (R + 1) × sqrt ((R - 1) / (R + 1))
a.k.a. ((-1) + R * 2) * 0.5
On entry:
Rdx = ptr to right arg
Rcx = ptr to result
On exit:
EAX = clobbered
|
finit ; Initialize the FPU
fld qword ptr [Rdx] ; Load the float right arg
fld st(0) ; R R
fld1 ; 1 R R
faddp st(1),st(0) ; R+1 R
fld1 ; 1 R+1 R
fsubp st(2),st(0) ; R-1 R+1
fld st(1) ; R+1 R-1 R+1
fdivp st(1),st(0) ; (R-1)/(R+1) R+1
fsqrt ; sqrt(...) R+1
fmulp st(1),st(0) ; sqrt(...) * (R+1)
fstp qword ptr [Rcx] ; Save in result
ret ; Return to caller
iAsmCircleN4Flt endp ; End iAsmCircleN4Flt procedure
end