linux-user, scripts: add a script to update syscall.tbl
[qemu.git] / target / nios2 / mmu.h
1 /*
2 * Altera Nios II MMU emulation for qemu.
3 *
4 * Copyright (C) 2012 Chris Wulff <crwulff@gmail.com>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see
18 * <http://www.gnu.org/licenses/lgpl-2.1.html>
19 */
20
21 #ifndef NIOS2_MMU_H
22 #define NIOS2_MMU_H
23
24 typedef struct Nios2TLBEntry {
25 target_ulong tag;
26 target_ulong data;
27 } Nios2TLBEntry;
28
29 typedef struct Nios2MMU {
30 int tlb_entry_mask;
31 uint32_t pteaddr_wr;
32 uint32_t tlbacc_wr;
33 uint32_t tlbmisc_wr;
34 Nios2TLBEntry *tlb;
35 } Nios2MMU;
36
37 typedef struct Nios2MMULookup {
38 target_ulong vaddr;
39 target_ulong paddr;
40 int prot;
41 } Nios2MMULookup;
42
43 void mmu_flip_um(CPUNios2State *env, unsigned int um);
44 unsigned int mmu_translate(CPUNios2State *env,
45 Nios2MMULookup *lu,
46 target_ulong vaddr, int rw, int mmu_idx);
47 void mmu_read_debug(CPUNios2State *env, uint32_t rn);
48 void mmu_write(CPUNios2State *env, uint32_t rn, uint32_t v);
49 void mmu_init(CPUNios2State *env);
50
51 #endif /* NIOS2_MMU_H */