diff options
Diffstat (limited to 'gcc/ada/s-mastop-tru64.adb')
| -rw-r--r-- | gcc/ada/s-mastop-tru64.adb | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/gcc/ada/s-mastop-tru64.adb b/gcc/ada/s-mastop-tru64.adb deleted file mode 100644 index 7114ea700f4..00000000000 --- a/gcc/ada/s-mastop-tru64.adb +++ /dev/null @@ -1,163 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- SYSTEM.MACHINE_STATE_OPERATIONS -- --- -- --- B o d y -- --- (Version for Alpha/Dec Unix) -- --- -- --- Copyright (C) 1999-2010, AdaCore -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 3, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- --- or FITNESS FOR A PARTICULAR PURPOSE. -- --- -- --- As a special exception under Section 7 of GPL version 3, you are granted -- --- additional permissions described in the GCC Runtime Library Exception, -- --- version 3.1, as published by the Free Software Foundation. -- --- -- --- You should have received a copy of the GNU General Public License and -- --- a copy of the GCC Runtime Library Exception along with this program; -- --- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- --- <http://www.gnu.org/licenses/>. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This version of System.Machine_State_Operations is for use on --- Alpha systems running DEC Unix. - -with System.Memory; - -package body System.Machine_State_Operations is - - pragma Linker_Options ("-lexc"); - -- Needed for definitions of exc_capture_context and exc_virtual_unwind - - ---------------------------- - -- Allocate_Machine_State -- - ---------------------------- - - function Allocate_Machine_State return Machine_State is - use System.Storage_Elements; - - function c_machine_state_length return Storage_Offset; - pragma Import (C, c_machine_state_length, "__gnat_machine_state_length"); - - begin - return Machine_State - (Memory.Alloc (Memory.size_t (c_machine_state_length))); - end Allocate_Machine_State; - - ---------------- - -- Fetch_Code -- - ---------------- - - function Fetch_Code (Loc : Code_Loc) return Code_Loc is - begin - return Loc; - end Fetch_Code; - - ------------------------ - -- Free_Machine_State -- - ------------------------ - - procedure Free_Machine_State (M : in out Machine_State) is - begin - Memory.Free (Address (M)); - M := Machine_State (Null_Address); - end Free_Machine_State; - - ------------------ - -- Get_Code_Loc -- - ------------------ - - function Get_Code_Loc (M : Machine_State) return Code_Loc is - Asm_Call_Size : constant := 4; - - function c_get_code_loc (M : Machine_State) return Code_Loc; - pragma Import (C, c_get_code_loc, "__gnat_get_code_loc"); - - -- Code_Loc returned by c_get_code_loc is the return point but here we - -- want Get_Code_Loc to return the call point. Under DEC Unix a call - -- asm instruction takes 4 bytes. So we must remove this value from - -- c_get_code_loc to have the call point. - - Loc : constant Code_Loc := c_get_code_loc (M); - - begin - if Loc = 0 then - return 0; - else - return Loc - Asm_Call_Size; - end if; - end Get_Code_Loc; - - -------------------------- - -- Machine_State_Length -- - -------------------------- - - function Machine_State_Length - return System.Storage_Elements.Storage_Offset - is - use System.Storage_Elements; - - function c_machine_state_length return Storage_Offset; - pragma Import (C, c_machine_state_length, "__gnat_machine_state_length"); - - begin - return c_machine_state_length; - end Machine_State_Length; - - --------------- - -- Pop_Frame -- - --------------- - - procedure Pop_Frame (M : Machine_State) is - procedure exc_virtual_unwind (Fcn : System.Address; M : Machine_State); - pragma Import (C, exc_virtual_unwind, "exc_virtual_unwind"); - - function exc_lookup_function (Loc : Code_Loc) return System.Address; - pragma Import (C, exc_lookup_function, "exc_lookup_function_entry"); - - procedure c_set_code_loc (M : Machine_State; Loc : Code_Loc); - pragma Import (C, c_set_code_loc, "__gnat_set_code_loc"); - - -- Look for a code-range descriptor table containing the PC of the - -- specified machine state. If we don't find any, attempting to unwind - -- further would fail so we set the machine state's code location to a - -- value indicating that the top of the call chain is reached. This - -- happens when the function at the address pointed to by PC has not - -- been registered with the unwinding machinery, as with the __istart - -- functions generated by the linker in presence of initialization - -- routines for example. - - Prf : constant System.Address := exc_lookup_function (Get_Code_Loc (M)); - - begin - if Prf = System.Null_Address then - c_set_code_loc (M, 0); - else - exc_virtual_unwind (Prf, M); - end if; - end Pop_Frame; - - ----------------------- - -- Set_Machine_State -- - ----------------------- - - procedure Set_Machine_State (M : Machine_State) is - procedure c_capture_context (M : Machine_State); - pragma Import (C, c_capture_context, "exc_capture_context"); - begin - c_capture_context (M); - Pop_Frame (M); - end Set_Machine_State; - -end System.Machine_State_Operations; |