1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20#include "qemu/osdep.h"
21#include "qemu-common.h"
22#include "qemu.h"
23#include "user-internals.h"
24#include "cpu_loop-common.h"
25#include "signal-common.h"
26
27void cpu_loop(CPUCRISState *env)
28{
29 CPUState *cs = env_cpu(env);
30 int trapnr, ret;
31 target_siginfo_t info;
32
33 while (1) {
34 cpu_exec_start(cs);
35 trapnr = cpu_exec(cs);
36 cpu_exec_end(cs);
37 process_queued_cpu_work(cs);
38
39 switch (trapnr) {
40 case EXCP_INTERRUPT:
41
42 break;
43 case EXCP_BREAK:
44 ret = do_syscall(env,
45 env->regs[9],
46 env->regs[10],
47 env->regs[11],
48 env->regs[12],
49 env->regs[13],
50 env->pregs[7],
51 env->pregs[11],
52 0, 0);
53 if (ret == -TARGET_ERESTARTSYS) {
54 env->pc -= 2;
55 } else if (ret != -TARGET_QEMU_ESIGRETURN) {
56 env->regs[10] = ret;
57 }
58 break;
59 case EXCP_DEBUG:
60 info.si_signo = TARGET_SIGTRAP;
61 info.si_errno = 0;
62 info.si_code = TARGET_TRAP_BRKPT;
63 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
64 break;
65 case EXCP_ATOMIC:
66 cpu_exec_step_atomic(cs);
67 break;
68 default:
69 fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
70 cpu_dump_state(cs, stderr, 0);
71 exit(EXIT_FAILURE);
72 }
73 process_pending_signals (env);
74 }
75}
76
77void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
78{
79 CPUState *cpu = env_cpu(env);
80 TaskState *ts = cpu->opaque;
81 struct image_info *info = ts->info;
82
83 env->regs[0] = regs->r0;
84 env->regs[1] = regs->r1;
85 env->regs[2] = regs->r2;
86 env->regs[3] = regs->r3;
87 env->regs[4] = regs->r4;
88 env->regs[5] = regs->r5;
89 env->regs[6] = regs->r6;
90 env->regs[7] = regs->r7;
91 env->regs[8] = regs->r8;
92 env->regs[9] = regs->r9;
93 env->regs[10] = regs->r10;
94 env->regs[11] = regs->r11;
95 env->regs[12] = regs->r12;
96 env->regs[13] = regs->r13;
97 env->regs[14] = info->start_stack;
98 env->regs[15] = regs->acr;
99 env->pc = regs->erp;
100}
101