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cd71c089 LV |
1 | /* |
2 | * qemu user cpu loop | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program 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 | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "qemu/osdep.h" | |
a8d25326 | 21 | #include "qemu-common.h" |
cd71c089 LV |
22 | #include "qemu.h" |
23 | #include "cpu_loop-common.h" | |
24 | ||
8dd14a9b LV |
25 | void cpu_loop(CPUCRISState *env) |
26 | { | |
dbefca23 | 27 | CPUState *cs = env_cpu(env); |
8dd14a9b LV |
28 | int trapnr, ret; |
29 | target_siginfo_t info; | |
30 | ||
31 | while (1) { | |
32 | cpu_exec_start(cs); | |
33 | trapnr = cpu_exec(cs); | |
34 | cpu_exec_end(cs); | |
35 | process_queued_cpu_work(cs); | |
36 | ||
37 | switch (trapnr) { | |
38 | case 0xaa: | |
39 | { | |
40 | info.si_signo = TARGET_SIGSEGV; | |
41 | info.si_errno = 0; | |
42 | /* XXX: check env->error_code */ | |
43 | info.si_code = TARGET_SEGV_MAPERR; | |
44 | info._sifields._sigfault._addr = env->pregs[PR_EDA]; | |
45 | queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); | |
46 | } | |
47 | break; | |
48 | case EXCP_INTERRUPT: | |
49 | /* just indicate that signals should be handled asap */ | |
50 | break; | |
51 | case EXCP_BREAK: | |
52 | ret = do_syscall(env, | |
53 | env->regs[9], | |
54 | env->regs[10], | |
55 | env->regs[11], | |
56 | env->regs[12], | |
57 | env->regs[13], | |
58 | env->pregs[7], | |
59 | env->pregs[11], | |
60 | 0, 0); | |
61 | if (ret == -TARGET_ERESTARTSYS) { | |
62 | env->pc -= 2; | |
63 | } else if (ret != -TARGET_QEMU_ESIGRETURN) { | |
64 | env->regs[10] = ret; | |
65 | } | |
66 | break; | |
67 | case EXCP_DEBUG: | |
b10089a1 PM |
68 | info.si_signo = TARGET_SIGTRAP; |
69 | info.si_errno = 0; | |
70 | info.si_code = TARGET_TRAP_BRKPT; | |
71 | queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); | |
8dd14a9b LV |
72 | break; |
73 | case EXCP_ATOMIC: | |
74 | cpu_exec_step_atomic(cs); | |
75 | break; | |
76 | default: | |
84ca4fa9 | 77 | fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr); |
90c84c56 | 78 | cpu_dump_state(cs, stderr, 0); |
8dd14a9b LV |
79 | exit(EXIT_FAILURE); |
80 | } | |
81 | process_pending_signals (env); | |
82 | } | |
83 | } | |
84 | ||
cd71c089 LV |
85 | void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) |
86 | { | |
29a0af61 | 87 | CPUState *cpu = env_cpu(env); |
8dd14a9b LV |
88 | TaskState *ts = cpu->opaque; |
89 | struct image_info *info = ts->info; | |
90 | ||
91 | env->regs[0] = regs->r0; | |
92 | env->regs[1] = regs->r1; | |
93 | env->regs[2] = regs->r2; | |
94 | env->regs[3] = regs->r3; | |
95 | env->regs[4] = regs->r4; | |
96 | env->regs[5] = regs->r5; | |
97 | env->regs[6] = regs->r6; | |
98 | env->regs[7] = regs->r7; | |
99 | env->regs[8] = regs->r8; | |
100 | env->regs[9] = regs->r9; | |
101 | env->regs[10] = regs->r10; | |
102 | env->regs[11] = regs->r11; | |
103 | env->regs[12] = regs->r12; | |
104 | env->regs[13] = regs->r13; | |
105 | env->regs[14] = info->start_stack; | |
106 | env->regs[15] = regs->acr; | |
107 | env->pc = regs->erp; | |
cd71c089 | 108 | } |