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Diffstat (limited to 'src/grt/grt-stacks.ads')
-rw-r--r-- | src/grt/grt-stacks.ads | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/src/grt/grt-stacks.ads b/src/grt/grt-stacks.ads deleted file mode 100644 index dd9434080..000000000 --- a/src/grt/grt-stacks.ads +++ /dev/null @@ -1,87 +0,0 @@ --- GHDL Run Time (GRT) - process stacks. --- Copyright (C) 2002 - 2014 Tristan Gingold --- --- GHDL is free software; you can redistribute it and/or modify it under --- the terms of the GNU General Public License as published by the Free --- Software Foundation; either version 2, or (at your option) any later --- version. --- --- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY --- WARRANTY; without even the implied warranty of MERCHANTABILITY or --- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --- for more details. --- --- You should have received a copy of the GNU General Public License --- along with GCC; see the file COPYING. If not, write to the Free --- Software Foundation, 59 Temple Place - Suite 330, Boston, MA --- 02111-1307, USA. --- --- As a special exception, if other files instantiate generics from this --- unit, or you link this unit with other files to produce an executable, --- this unit does not by itself cause the resulting executable to be --- covered by the GNU General Public License. This exception does not --- however invalidate any other reasons why the executable file might be --- covered by the GNU Public License. -with System; use System; -with Ada.Unchecked_Conversion; - -package Grt.Stacks is - -- Instance is the parameter of the process procedure. - -- This is in fact a fully opaque type whose content is private to the - -- process. - type Instance is limited private; - type Instance_Acc is access all Instance; - pragma Convention (C, Instance_Acc); - - -- A process is identified by a procedure having a single private - -- parameter (its instance). - type Proc_Acc is access procedure (Self : Instance_Acc); - pragma Convention (C, Proc_Acc); - - function To_Address is new Ada.Unchecked_Conversion - (Instance_Acc, System.Address); - - type Stack_Type is new Address; - Null_Stack : constant Stack_Type := Stack_Type (Null_Address); - - -- Initialize the stacks package. - -- This may adjust stack sizes. - -- Must be called after grt.options.decode. - procedure Stack_Init; - - -- Create a new stack, which on first execution will call FUNC with - -- an argument ARG. - function Stack_Create (Func : Proc_Acc; Arg : Instance_Acc) - return Stack_Type; - - -- Resume stack TO and save the current context to the stack pointed by - -- CUR. - procedure Stack_Switch (To : Stack_Type; From : Stack_Type); - - -- Delete stack STACK, which must not be currently executed. - procedure Stack_Delete (Stack : Stack_Type); - - -- Error during stack handling: - -- Cannot grow the stack. - procedure Error_Grow_Failed; - pragma No_Return (Error_Grow_Failed); - - -- Invalid memory access detected (other than dereferencing a NULL access). - procedure Error_Memory_Access; - pragma No_Return (Error_Memory_Access); - - -- A NULL access is dereferenced. - procedure Error_Null_Access; - pragma No_Return (Error_Null_Access); -private - type Instance is null record; - - pragma Import (C, Stack_Init, "grt_stack_init"); - pragma Import (C, Stack_Create, "grt_stack_create"); - pragma Import (C, Stack_Switch, "grt_stack_switch"); - pragma Import (C, Stack_Delete, "grt_stack_delete"); - - pragma Export (C, Error_Grow_Failed, "grt_stack_error_grow_failed"); - pragma Export (C, Error_Memory_Access, "grt_stack_error_memory_access"); - pragma Export (C, Error_Null_Access, "grt_stack_error_null_access"); -end Grt.Stacks; |