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package body Unc_Memops is
use type System.Address;
type Addr_Array_T is array (1 .. 20) of Addr_T;
type Addr_Stack_T is record
Store : Addr_Array_T;
Size : Integer := 0;
end record;
procedure Push (Addr : Addr_T; As : access addr_stack_t) is
begin
As.Size := As.Size + 1;
As.Store (As.Size) := Addr;
end;
function Pop (As : access Addr_Stack_T) return Addr_T is
Addr : Addr_T := As.Store (As.Size);
begin
As.Size := As.Size - 1;
return Addr;
end;
--
Addr_Stack : aliased Addr_Stack_T;
Symetry_Expected : Boolean := False;
procedure Expect_Symetry (Status : Boolean) is
begin
Symetry_Expected := Status;
end;
function Alloc (Size : size_t) return Addr_T is
function malloc (Size : Size_T) return Addr_T;
pragma Import (C, Malloc, "malloc");
Ptr : Addr_T := malloc (Size);
begin
if Symetry_Expected then
Push (Ptr, Addr_Stack'Access);
end if;
return Ptr;
end;
procedure Free (Ptr : addr_t) is
begin
if Symetry_Expected
and then Ptr /= Pop (Addr_Stack'Access)
then
raise Program_Error;
end if;
end;
function Realloc (Ptr : addr_t; Size : size_t) return Addr_T is
begin
raise Program_Error;
return System.Null_Address;
end;
end;
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