Hi
I use Fpu in my Tool now i want to use a structure to change some variables
exmpl:
szText db "Test string",0
Num1 REAL4 0.06f
Num2 REAL4 0.2f
Num3 dd 3
My struct is
CalcStruct struct
pText dword ?
fpuNum1 REAL4 ?
fpuNum1 REAL4 ?
DDNum1 Dword ?
CalcStruct ends
CalcStruct <offset szText,Num1,Num2,Num3,>
Can any help me or post an example?
Thanks in forward
Greets,
;when you define a structure, no data is created
;you are simply describing a new data type
;notice that we have not opened the .CONST, .DATA, .DATA?, or .CODE section
CalcStruct struct
pText dd ?
fpuNum1 REAL4 ?
fpuNum1 REAL4 ?
DDNum1 dd ?
CalcStruct ends
;now, you want to define data, using that new data type
.DATA
cs CalcStruct <szText, 1.234, 3.14, 234234>
szText db 'SomeText',0
;now, let's access one of the structure members
.CODE
mov eax,cs.DDNum1 ;EAX = 234234
also, when you use a pointer to a data item as a data operand, the assembler assumes you want the address
i.e.
<szText,....
is the same as
<offset szText,....
Thanks dave
But use a dword or byte in a struct is not my problem
How can use a struct the fpu values and set from a struct to fpu > fadd
the assembler knows it's a REAL4 type
fadd cs.fpuNum1 ;adds 1.234 to st(0)
what you were doing was trying to access members via the name "CalcStruct"
CalcStruct is essentially a data type
access them via "cs", the name of the data label
.DATA
cs CalcStruct <szText, 1.234, 3.14, 234234>