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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(CPUSH4State *env)
28{
29 CPUState *cs = env_cpu(env);
30 int trapnr, ret;
31
32 while (1) {
33 bool arch_interrupt = true;
34
35 cpu_exec_start(cs);
36 trapnr = cpu_exec(cs);
37 cpu_exec_end(cs);
38 process_queued_cpu_work(cs);
39
40 switch (trapnr) {
41 case 0x160:
42 env->pc += 2;
43 ret = do_syscall(env,
44 env->gregs[3],
45 env->gregs[4],
46 env->gregs[5],
47 env->gregs[6],
48 env->gregs[7],
49 env->gregs[0],
50 env->gregs[1],
51 0, 0);
52 if (ret == -QEMU_ERESTARTSYS) {
53 env->pc -= 2;
54 } else if (ret != -QEMU_ESIGRETURN) {
55 env->gregs[0] = ret;
56 }
57 break;
58 case EXCP_INTERRUPT:
59
60 break;
61 case EXCP_DEBUG:
62 force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->pc);
63 break;
64 case EXCP_ATOMIC:
65 cpu_exec_step_atomic(cs);
66 arch_interrupt = false;
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
77
78
79 if (arch_interrupt) {
80 env->lock_addr = -1;
81 }
82 }
83}
84
85void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
86{
87 int i;
88
89 for(i = 0; i < 16; i++) {
90 env->gregs[i] = regs->regs[i];
91 }
92 env->pc = regs->pc;
93}
94