| /* |
| * (C) Copyright 2004, Psyent Corporation <www.psyent.com> |
| * Scott McNutt <smcnutt@psyent.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #ifndef __NIOS2_H__ |
| #define __NIOS2_H__ |
| |
| /*------------------------------------------------------------------------ |
| * Control registers -- use with wrctl() & rdctl() |
| *----------------------------------------------------------------------*/ |
| #define CTL_STATUS 0 /* Processor status reg */ |
| #define CTL_ESTATUS 1 /* Exception status reg */ |
| #define CTL_BSTATUS 2 /* Break status reg */ |
| #define CTL_IENABLE 3 /* Interrut enable reg */ |
| #define CTL_IPENDING 4 /* Interrut pending reg */ |
| |
| /*------------------------------------------------------------------------ |
| * Access to control regs |
| *----------------------------------------------------------------------*/ |
| |
| #define rdctl(reg) __builtin_rdctl(reg) |
| #define wrctl(reg, val) __builtin_wrctl(reg, val) |
| |
| /*------------------------------------------------------------------------ |
| * Control reg bit masks |
| *----------------------------------------------------------------------*/ |
| #define STATUS_IE (1<<0) /* Interrupt enable */ |
| #define STATUS_U (1<<1) /* User-mode */ |
| |
| /*------------------------------------------------------------------------ |
| * Bit-31 Cache bypass -- only valid for data access. When data cache |
| * is not implemented, bit 31 is ignored for compatibility. |
| *----------------------------------------------------------------------*/ |
| #define CACHE_BYPASS(a) ((a) | 0x80000000) |
| #define CACHE_NO_BYPASS(a) ((a) & ~0x80000000) |
| |
| #endif /* __NIOS2_H__ */ |