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qxl: add trace-event for QXL_IO_LOG
[mirror_qemu.git] / target-openrisc / interrupt_helper.c
1 /*
2 * OpenRISC interrupt helper routines
3 *
4 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
5 * Feng Gao <gf91597@gmail.com>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "cpu.h"
22 #include "helper.h"
23
24 void HELPER(rfe)(CPUOpenRISCState *env)
25 {
26 OpenRISCCPU *cpu = OPENRISC_CPU(ENV_GET_CPU(env));
27 #ifndef CONFIG_USER_ONLY
28 int need_flush_tlb = (cpu->env.sr & (SR_SM | SR_IME | SR_DME)) ^
29 (cpu->env.esr & (SR_SM | SR_IME | SR_DME));
30 #endif
31 cpu->env.pc = cpu->env.epcr;
32 cpu->env.npc = cpu->env.epcr;
33 cpu->env.sr = cpu->env.esr;
34
35 #ifndef CONFIG_USER_ONLY
36 if (cpu->env.sr & SR_DME) {
37 cpu->env.tlb->cpu_openrisc_map_address_data =
38 &cpu_openrisc_get_phys_data;
39 } else {
40 cpu->env.tlb->cpu_openrisc_map_address_data =
41 &cpu_openrisc_get_phys_nommu;
42 }
43
44 if (cpu->env.sr & SR_IME) {
45 cpu->env.tlb->cpu_openrisc_map_address_code =
46 &cpu_openrisc_get_phys_code;
47 } else {
48 cpu->env.tlb->cpu_openrisc_map_address_code =
49 &cpu_openrisc_get_phys_nommu;
50 }
51
52 if (need_flush_tlb) {
53 tlb_flush(&cpu->env, 1);
54 }
55 #endif
56 cpu->env.interrupt_request |= CPU_INTERRUPT_EXITTB;
57 }