| /* c-isr library stuff of Andes NDS32 cpu for GNU compiler |
| Copyright (C) 2012-2021 Free Software Foundation, Inc. |
| Contributed by Andes Technology Corporation. |
| |
| This file is part of GCC. |
| |
| GCC 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 3, or (at your |
| option) any later version. |
| |
| GCC 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. |
| |
| 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/>. */ |
| |
| .macro ADJ_INTR_LVL |
| #if defined(NDS32_NESTED) /* Nested handler. */ |
| mfsr $r3, $PSW |
| /* By substracting 1 from $PSW, we can lower PSW.INTL |
| and enable GIE simultaneously. */ |
| addi $r3, $r3, #-0x1 |
| #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ |
| ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ |
| #endif |
| mtsr $r3, $PSW |
| #elif defined(NDS32_NESTED_READY) /* Nested ready handler. */ |
| /* Save ipc and ipsw and lower INT level. */ |
| mfsr $r3, $PSW |
| addi $r3, $r3, #-0x2 |
| #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ |
| ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ |
| #endif |
| mtsr $r3, $PSW |
| #else /* Not nested handler. */ |
| #if __NDS32_EXT_ZOL__ || __NDS32_EXT_DSP__ |
| mfsr $r3, $PSW |
| ori $r3, $r3, 0x2000 /* Set PSW.AEN(b'13) */ |
| mtsr $r3, $PSW |
| #endif |
| #endif |
| .endm |