1 /* c-isr library stuff of Andes NDS32 cpu for GNU compiler 2 Copyright (C) 2012-2024 Free Software Foundation, Inc. 3 Contributed by Andes Technology Corporation. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 .macro ADJ_INTR_LVL 27 #if defined(NDS32_NESTED) /* Nested handler. */ 28 mfsr $r3, $PSW 29 /* By substracting 1 from $PSW, we can lower PSW.INTL 30 and enable GIE simultaneously. */ 31 addi $r3, $r3, #-0x1 32 #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ 33 ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ 34 #endif 35 mtsr $r3, $PSW 36 #elif defined(NDS32_NESTED_READY) /* Nested ready handler. */ 37 /* Save ipc and ipsw and lower INT level. */ 38 mfsr $r3, $PSW 39 addi $r3, $r3, #-0x2 40 #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ 41 ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ 42 #endif 43 mtsr $r3, $PSW 44 #else /* Not nested handler. */ 45 #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ 46 mfsr $r3, $PSW 47 ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ 48 mtsr $r3, $PSW 49 #endif 50 #endif 51 .endm 52
Indexes created Sun Mar 01 05:31:48 UTC 2026