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20#include "qemu/osdep.h"
21#include "qemu-common.h"
22#include "qemu.h"
23#include "cpu_loop-common.h"
24
25void cpu_loop(CPUOpenRISCState *env)
26{
27 CPUState *cs = env_cpu(env);
28 int trapnr;
29 abi_long ret;
30 target_siginfo_t info;
31
32 for (;;) {
33 cpu_exec_start(cs);
34 trapnr = cpu_exec(cs);
35 cpu_exec_end(cs);
36 process_queued_cpu_work(cs);
37
38 switch (trapnr) {
39 case EXCP_SYSCALL:
40 env->pc += 4;
41 ret = do_syscall(env,
42 cpu_get_gpr(env, 11),
43 cpu_get_gpr(env, 3),
44 cpu_get_gpr(env, 4),
45 cpu_get_gpr(env, 5),
46 cpu_get_gpr(env, 6),
47 cpu_get_gpr(env, 7),
48 cpu_get_gpr(env, 8), 0, 0);
49 if (ret == -TARGET_ERESTARTSYS) {
50 env->pc -= 4;
51 } else if (ret != -TARGET_QEMU_ESIGRETURN) {
52 cpu_set_gpr(env, 11, ret);
53 }
54 break;
55 case EXCP_DPF:
56 case EXCP_IPF:
57 case EXCP_RANGE:
58 info.si_signo = TARGET_SIGSEGV;
59 info.si_errno = 0;
60 info.si_code = TARGET_SEGV_MAPERR;
61 info._sifields._sigfault._addr = env->pc;
62 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
63 break;
64 case EXCP_ALIGN:
65 info.si_signo = TARGET_SIGBUS;
66 info.si_errno = 0;
67 info.si_code = TARGET_BUS_ADRALN;
68 info._sifields._sigfault._addr = env->pc;
69 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
70 break;
71 case EXCP_ILLEGAL:
72 info.si_signo = TARGET_SIGILL;
73 info.si_errno = 0;
74 info.si_code = TARGET_ILL_ILLOPC;
75 info._sifields._sigfault._addr = env->pc;
76 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
77 break;
78 case EXCP_FPE:
79 info.si_signo = TARGET_SIGFPE;
80 info.si_errno = 0;
81 info.si_code = 0;
82 info._sifields._sigfault._addr = env->pc;
83 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
84 break;
85 case EXCP_INTERRUPT:
86
87 break;
88 case EXCP_DEBUG:
89 info.si_signo = TARGET_SIGTRAP;
90 info.si_errno = 0;
91 info.si_code = TARGET_TRAP_BRKPT;
92 queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
93 break;
94 case EXCP_ATOMIC:
95 cpu_exec_step_atomic(cs);
96 break;
97 default:
98 g_assert_not_reached();
99 }
100 process_pending_signals(env);
101 }
102}
103
104void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
105{
106 int i;
107
108 for (i = 0; i < 32; i++) {
109 cpu_set_gpr(env, i, regs->gpr[i]);
110 }
111 env->pc = regs->pc;
112 cpu_set_sr(env, regs->sr);
113}
114