1 files changed, 79 insertions, 0 deletions
diff --git a/plugins/SDK/USDXStrUtils.pas b/plugins/SDK/USDXStrUtils.pas
new file mode 100644
index 00000000..94e5f65f
--- /dev/null
+++ b/plugins/SDK/USDXStrUtils.pas
@@ -0,0 +1,79 @@
+unit USDXStrUtils;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+uses ModiSDK;
+
+//function StrToAChar(Str: String): AChar;
+function CreateStr(Str: PChar): PChar;
+procedure FreeStr(Str: PChar);
+
+implementation
+
+{$IFDEF FPC}
+  {$ASMMODE Intel}
+{$ENDIF}
+
+{function StrToAChar(Str: String): AChar;
+var
+  L, I: Integer;
+begin
+  L := Length(Str);
+  For I := 0 to L-1 do
+    AChar[I] := Str[I+1];
+
+  For I := L to 254 do
+    AChar[I] := #0;
+end; }
+
+function StrCopy(Dest, Source: PChar): PChar; assembler;
+asm
+        PUSH    EDI
+        PUSH    ESI
+        MOV     ESI,EAX
+        MOV     EDI,EDX
+        MOV     ECX,0FFFFFFFFH
+        XOR     AL,AL
+        REPNE   SCASB
+        NOT     ECX
+        MOV     EDI,ESI
+        MOV     ESI,EDX
+        MOV     EDX,ECX
+        MOV     EAX,EDI
+        SHR     ECX,2
+        REP     MOVSD
+        MOV     ECX,EDX
+        AND     ECX,3
+        REP     MOVSB
+        POP     ESI
+        POP     EDI
+end;
+
+function StrLen(Str: PChar): Cardinal; assembler;
+asm
+        MOV     EDX,EDI
+        MOV     EDI,EAX
+        MOV     ECX,0FFFFFFFFH
+        XOR     AL,AL
+        REPNE   SCASB
+        MOV     EAX,0FFFFFFFEH
+        SUB     EAX,ECX
+        MOV     EDI,EDX
+end;
+
+function CreateStr(Str: PChar): PChar;
+begin
+  GetMem(Result, StrLen(Str) + 1);
+  StrCopy(Result, Str);
+end;
+
+procedure FreeStr(Str: PChar);
+begin
+  FreeMem(Str);
+end;
+
+end.