Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/s-intman__vxworks.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 1 ------------------------------------------------------------------------------ | |
| 2 -- -- | |
| 3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- | |
| 4 -- -- | |
| 5 -- S Y S T E M . I N T E R R U P T _ M A N A G E M E N T -- | |
| 6 -- -- | |
| 7 -- B o d y -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNARL is free software; you can redistribute it and/or modify it under -- | |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
| 17 -- -- | |
| 18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 -- -- | |
| 22 -- You should have received a copy of the GNU General Public License and -- | |
| 23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 -- <http://www.gnu.org/licenses/>. -- | |
| 26 -- -- | |
| 27 -- GNARL was developed by the GNARL team at Florida State University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies, Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 -- This is the VxWorks version of this package | |
| 33 | |
| 34 -- It is simpler than other versions because the Ada interrupt handling | |
| 35 -- mechanisms are used for hardware interrupts rather than signals. | |
| 36 | |
| 37 package body System.Interrupt_Management is | |
| 38 | |
| 39 use System.OS_Interface; | |
| 40 | |
| 41 ----------------------- | |
| 42 -- Local Subprograms -- | |
| 43 ----------------------- | |
| 44 | |
| 45 function State (Int : Interrupt_ID) return Character; | |
| 46 pragma Import (C, State, "__gnat_get_interrupt_state"); | |
| 47 -- Get interrupt state. Defined in init.c The input argument is the | |
| 48 -- hardware interrupt number, and the result is one of the following: | |
| 49 | |
| 50 Runtime : constant Character := 'r'; | |
| 51 Default : constant Character := 's'; | |
| 52 -- 'n' this interrupt not set by any Interrupt_State pragma | |
| 53 -- 'u' Interrupt_State pragma set state to User | |
| 54 -- 'r' Interrupt_State pragma set state to Runtime | |
| 55 -- 's' Interrupt_State pragma set state to System (use "default" | |
| 56 -- system handler) | |
| 57 | |
| 58 ---------------- | |
| 59 -- Initialize -- | |
| 60 ---------------- | |
| 61 | |
| 62 Initialized : Boolean := False; | |
| 63 -- Set to True once Initialize is called, further calls have no effect | |
| 64 | |
| 65 procedure Initialize is | |
| 66 | |
| 67 begin | |
| 68 if Initialized then | |
| 69 return; | |
| 70 end if; | |
| 71 | |
| 72 Initialized := True; | |
| 73 | |
| 74 -- Change this if you want to use another signal for task abort. | |
| 75 -- SIGTERM might be a good one. | |
| 76 | |
| 77 Abort_Task_Interrupt := SIGABRT; | |
| 78 | |
| 79 -- Initialize hardware interrupt handling | |
| 80 | |
| 81 pragma Assert (Reserve = (Interrupt_ID'Range => False)); | |
| 82 | |
| 83 -- Check all interrupts for state that requires keeping them reserved | |
| 84 | |
| 85 for J in Interrupt_ID'Range loop | |
| 86 if State (J) = Default or else State (J) = Runtime then | |
| 87 Reserve (J) := True; | |
| 88 end if; | |
| 89 end loop; | |
| 90 | |
| 91 end Initialize; | |
| 92 | |
| 93 end System.Interrupt_Management; |