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|  Message 326  |
|  Anton Shepelev to Anton Shepelev  |
|  TP 7.0 pointer passing convension  |
|  16 Feb 20 22:12:54  |
 
MSGID: 2:221/360.0 5e49a242
REPLY: 2:221/360.0 5e48573e
PID: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32)
CHRS: IBMPC 2
TZUTC: 0200
I wrote:
> Here is a fixed version, without redundant opera-
> tions and with single-byte write:
>
> procedure AtoB(a: byte; var b: byte);
> begin asm
> MOV ES, [BP+2] { store segment of b in ES }
> MOV DI, [BP+4] { store offset of b in DI }
> MOV AX, [BP+8] { store a in AX }
> MOV [DI], AL { assign AX to a }
> end end;
Problem solved. Here is the correct code in TP as-
sembly:
procedure AtoBRef(a: byte; var b: byte);
begin asm
MOV DI, [BP+4] { store offset of b in DI }
MOV ES, [BP+6] { store segment of b in ES }
MOV AX, [BP+8] { store a in AX }
MOV [ES:DI], AL { assign AX to a }
end end;
It works as advertised.
---
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