2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 /*------------------------------------------------------------------------
12 * Control registers -- use with wrctl() & rdctl()
13 *----------------------------------------------------------------------*/
14 #define CTL_STATUS 0 /* Processor status reg */
15 #define CTL_ESTATUS 1 /* Exception status reg */
16 #define CTL_BSTATUS 2 /* Break status reg */
17 #define CTL_IENABLE 3 /* Interrut enable reg */
18 #define CTL_IPENDING 4 /* Interrut pending reg */
20 /*------------------------------------------------------------------------
21 * Access to control regs
22 *----------------------------------------------------------------------*/
24 #define rdctl(reg) __builtin_rdctl(reg)
25 #define wrctl(reg, val) __builtin_wrctl(reg, val)
27 /*------------------------------------------------------------------------
28 * Control reg bit masks
29 *----------------------------------------------------------------------*/
30 #define STATUS_IE (1<<0) /* Interrupt enable */
31 #define STATUS_U (1<<1) /* User-mode */
33 /*------------------------------------------------------------------------
34 * Bit-31 Cache bypass -- only valid for data access. When data cache
35 * is not implemented, bit 31 is ignored for compatibility.
36 *----------------------------------------------------------------------*/
37 #define CACHE_BYPASS(a) ((a) | 0x80000000)
38 #define CACHE_NO_BYPASS(a) ((a) & ~0x80000000)
40 #endif /* __NIOS2_H__ */