2 * OpenRISC interrupt helper routines
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.
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.
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/>.
21 #include "qemu/osdep.h"
23 #include "exec/exec-all.h"
24 #include "exec/helper-proto.h"
26 void HELPER(rfe)(CPUOpenRISCState *env)
28 OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
29 CPUState *cs = CPU(cpu);
30 #ifndef CONFIG_USER_ONLY
31 int need_flush_tlb = (cpu->env.sr & (SR_SM | SR_IME | SR_DME)) ^
32 (cpu->env.esr & (SR_SM | SR_IME | SR_DME));
34 cpu->env.pc = cpu->env.epcr;
35 cpu_set_sr(&cpu->env, cpu->env.esr);
36 cpu->env.lock_addr = -1;
38 #ifndef CONFIG_USER_ONLY
39 if (cpu->env.sr & SR_DME) {
40 cpu->env.tlb->cpu_openrisc_map_address_data =
41 &cpu_openrisc_get_phys_data;
43 cpu->env.tlb->cpu_openrisc_map_address_data =
44 &cpu_openrisc_get_phys_nommu;
47 if (cpu->env.sr & SR_IME) {
48 cpu->env.tlb->cpu_openrisc_map_address_code =
49 &cpu_openrisc_get_phys_code;
51 cpu->env.tlb->cpu_openrisc_map_address_code =
52 &cpu_openrisc_get_phys_nommu;
59 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;