linux-user: add open() hijack infrastructure
[qemu.git] / target-mips / machine.c
1 #include "hw/hw.h"
2 #include "hw/boards.h"
3
4 #include "cpu.h"
5
6 static void save_tc(QEMUFile *f, TCState *tc)
7 {
8 int i;
9
10 /* Save active TC */
11 for(i = 0; i < 32; i++)
12 qemu_put_betls(f, &tc->gpr[i]);
13 qemu_put_betls(f, &tc->PC);
14 for(i = 0; i < MIPS_DSP_ACC; i++)
15 qemu_put_betls(f, &tc->HI[i]);
16 for(i = 0; i < MIPS_DSP_ACC; i++)
17 qemu_put_betls(f, &tc->LO[i]);
18 for(i = 0; i < MIPS_DSP_ACC; i++)
19 qemu_put_betls(f, &tc->ACX[i]);
20 qemu_put_betls(f, &tc->DSPControl);
21 qemu_put_sbe32s(f, &tc->CP0_TCStatus);
22 qemu_put_sbe32s(f, &tc->CP0_TCBind);
23 qemu_put_betls(f, &tc->CP0_TCHalt);
24 qemu_put_betls(f, &tc->CP0_TCContext);
25 qemu_put_betls(f, &tc->CP0_TCSchedule);
26 qemu_put_betls(f, &tc->CP0_TCScheFBack);
27 qemu_put_sbe32s(f, &tc->CP0_Debug_tcstatus);
28 }
29
30 static void save_fpu(QEMUFile *f, CPUMIPSFPUContext *fpu)
31 {
32 int i;
33
34 for(i = 0; i < 32; i++)
35 qemu_put_be64s(f, &fpu->fpr[i].d);
36 qemu_put_s8s(f, &fpu->fp_status.float_detect_tininess);
37 qemu_put_s8s(f, &fpu->fp_status.float_rounding_mode);
38 qemu_put_s8s(f, &fpu->fp_status.float_exception_flags);
39 qemu_put_be32s(f, &fpu->fcr0);
40 qemu_put_be32s(f, &fpu->fcr31);
41 }
42
43 void cpu_save(QEMUFile *f, void *opaque)
44 {
45 CPUState *env = opaque;
46 int i;
47
48 /* Save active TC */
49 save_tc(f, &env->active_tc);
50
51 /* Save active FPU */
52 save_fpu(f, &env->active_fpu);
53
54 /* Save MVP */
55 qemu_put_sbe32s(f, &env->mvp->CP0_MVPControl);
56 qemu_put_sbe32s(f, &env->mvp->CP0_MVPConf0);
57 qemu_put_sbe32s(f, &env->mvp->CP0_MVPConf1);
58
59 /* Save TLB */
60 qemu_put_be32s(f, &env->tlb->nb_tlb);
61 qemu_put_be32s(f, &env->tlb->tlb_in_use);
62 for(i = 0; i < MIPS_TLB_MAX; i++) {
63 uint16_t flags = ((env->tlb->mmu.r4k.tlb[i].G << 10) |
64 (env->tlb->mmu.r4k.tlb[i].C0 << 7) |
65 (env->tlb->mmu.r4k.tlb[i].C1 << 4) |
66 (env->tlb->mmu.r4k.tlb[i].V0 << 3) |
67 (env->tlb->mmu.r4k.tlb[i].V1 << 2) |
68 (env->tlb->mmu.r4k.tlb[i].D0 << 1) |
69 (env->tlb->mmu.r4k.tlb[i].D1 << 0));
70 uint8_t asid;
71
72 qemu_put_betls(f, &env->tlb->mmu.r4k.tlb[i].VPN);
73 qemu_put_be32s(f, &env->tlb->mmu.r4k.tlb[i].PageMask);
74 asid = env->tlb->mmu.r4k.tlb[i].ASID;
75 qemu_put_8s(f, &asid);
76 qemu_put_be16s(f, &flags);
77 qemu_put_betls(f, &env->tlb->mmu.r4k.tlb[i].PFN[0]);
78 qemu_put_betls(f, &env->tlb->mmu.r4k.tlb[i].PFN[1]);
79 }
80
81 /* Save CPU metastate */
82 qemu_put_be32s(f, &env->current_tc);
83 qemu_put_be32s(f, &env->current_fpu);
84 qemu_put_sbe32s(f, &env->error_code);
85 qemu_put_be32s(f, &env->hflags);
86 qemu_put_betls(f, &env->btarget);
87 i = env->bcond;
88 qemu_put_sbe32s(f, &i);
89
90 /* Save remaining CP1 registers */
91 qemu_put_sbe32s(f, &env->CP0_Index);
92 qemu_put_sbe32s(f, &env->CP0_Random);
93 qemu_put_sbe32s(f, &env->CP0_VPEControl);
94 qemu_put_sbe32s(f, &env->CP0_VPEConf0);
95 qemu_put_sbe32s(f, &env->CP0_VPEConf1);
96 qemu_put_betls(f, &env->CP0_YQMask);
97 qemu_put_betls(f, &env->CP0_VPESchedule);
98 qemu_put_betls(f, &env->CP0_VPEScheFBack);
99 qemu_put_sbe32s(f, &env->CP0_VPEOpt);
100 qemu_put_betls(f, &env->CP0_EntryLo0);
101 qemu_put_betls(f, &env->CP0_EntryLo1);
102 qemu_put_betls(f, &env->CP0_Context);
103 qemu_put_sbe32s(f, &env->CP0_PageMask);
104 qemu_put_sbe32s(f, &env->CP0_PageGrain);
105 qemu_put_sbe32s(f, &env->CP0_Wired);
106 qemu_put_sbe32s(f, &env->CP0_SRSConf0);
107 qemu_put_sbe32s(f, &env->CP0_SRSConf1);
108 qemu_put_sbe32s(f, &env->CP0_SRSConf2);
109 qemu_put_sbe32s(f, &env->CP0_SRSConf3);
110 qemu_put_sbe32s(f, &env->CP0_SRSConf4);
111 qemu_put_sbe32s(f, &env->CP0_HWREna);
112 qemu_put_betls(f, &env->CP0_BadVAddr);
113 qemu_put_sbe32s(f, &env->CP0_Count);
114 qemu_put_betls(f, &env->CP0_EntryHi);
115 qemu_put_sbe32s(f, &env->CP0_Compare);
116 qemu_put_sbe32s(f, &env->CP0_Status);
117 qemu_put_sbe32s(f, &env->CP0_IntCtl);
118 qemu_put_sbe32s(f, &env->CP0_SRSCtl);
119 qemu_put_sbe32s(f, &env->CP0_SRSMap);
120 qemu_put_sbe32s(f, &env->CP0_Cause);
121 qemu_put_betls(f, &env->CP0_EPC);
122 qemu_put_sbe32s(f, &env->CP0_PRid);
123 qemu_put_sbe32s(f, &env->CP0_EBase);
124 qemu_put_sbe32s(f, &env->CP0_Config0);
125 qemu_put_sbe32s(f, &env->CP0_Config1);
126 qemu_put_sbe32s(f, &env->CP0_Config2);
127 qemu_put_sbe32s(f, &env->CP0_Config3);
128 qemu_put_sbe32s(f, &env->CP0_Config6);
129 qemu_put_sbe32s(f, &env->CP0_Config7);
130 qemu_put_betls(f, &env->lladdr);
131 for(i = 0; i < 8; i++)
132 qemu_put_betls(f, &env->CP0_WatchLo[i]);
133 for(i = 0; i < 8; i++)
134 qemu_put_sbe32s(f, &env->CP0_WatchHi[i]);
135 qemu_put_betls(f, &env->CP0_XContext);
136 qemu_put_sbe32s(f, &env->CP0_Framemask);
137 qemu_put_sbe32s(f, &env->CP0_Debug);
138 qemu_put_betls(f, &env->CP0_DEPC);
139 qemu_put_sbe32s(f, &env->CP0_Performance0);
140 qemu_put_sbe32s(f, &env->CP0_TagLo);
141 qemu_put_sbe32s(f, &env->CP0_DataLo);
142 qemu_put_sbe32s(f, &env->CP0_TagHi);
143 qemu_put_sbe32s(f, &env->CP0_DataHi);
144 qemu_put_betls(f, &env->CP0_ErrorEPC);
145 qemu_put_sbe32s(f, &env->CP0_DESAVE);
146
147 /* Save inactive TC state */
148 for (i = 0; i < MIPS_SHADOW_SET_MAX; i++)
149 save_tc(f, &env->tcs[i]);
150 for (i = 0; i < MIPS_FPU_MAX; i++)
151 save_fpu(f, &env->fpus[i]);
152 }
153
154 static void load_tc(QEMUFile *f, TCState *tc)
155 {
156 int i;
157
158 /* Save active TC */
159 for(i = 0; i < 32; i++)
160 qemu_get_betls(f, &tc->gpr[i]);
161 qemu_get_betls(f, &tc->PC);
162 for(i = 0; i < MIPS_DSP_ACC; i++)
163 qemu_get_betls(f, &tc->HI[i]);
164 for(i = 0; i < MIPS_DSP_ACC; i++)
165 qemu_get_betls(f, &tc->LO[i]);
166 for(i = 0; i < MIPS_DSP_ACC; i++)
167 qemu_get_betls(f, &tc->ACX[i]);
168 qemu_get_betls(f, &tc->DSPControl);
169 qemu_get_sbe32s(f, &tc->CP0_TCStatus);
170 qemu_get_sbe32s(f, &tc->CP0_TCBind);
171 qemu_get_betls(f, &tc->CP0_TCHalt);
172 qemu_get_betls(f, &tc->CP0_TCContext);
173 qemu_get_betls(f, &tc->CP0_TCSchedule);
174 qemu_get_betls(f, &tc->CP0_TCScheFBack);
175 qemu_get_sbe32s(f, &tc->CP0_Debug_tcstatus);
176 }
177
178 static void load_fpu(QEMUFile *f, CPUMIPSFPUContext *fpu)
179 {
180 int i;
181
182 for(i = 0; i < 32; i++)
183 qemu_get_be64s(f, &fpu->fpr[i].d);
184 qemu_get_s8s(f, &fpu->fp_status.float_detect_tininess);
185 qemu_get_s8s(f, &fpu->fp_status.float_rounding_mode);
186 qemu_get_s8s(f, &fpu->fp_status.float_exception_flags);
187 qemu_get_be32s(f, &fpu->fcr0);
188 qemu_get_be32s(f, &fpu->fcr31);
189 }
190
191 int cpu_load(QEMUFile *f, void *opaque, int version_id)
192 {
193 CPUState *env = opaque;
194 int i;
195
196 if (version_id != 3)
197 return -EINVAL;
198
199 /* Load active TC */
200 load_tc(f, &env->active_tc);
201
202 /* Load active FPU */
203 load_fpu(f, &env->active_fpu);
204
205 /* Load MVP */
206 qemu_get_sbe32s(f, &env->mvp->CP0_MVPControl);
207 qemu_get_sbe32s(f, &env->mvp->CP0_MVPConf0);
208 qemu_get_sbe32s(f, &env->mvp->CP0_MVPConf1);
209
210 /* Load TLB */
211 qemu_get_be32s(f, &env->tlb->nb_tlb);
212 qemu_get_be32s(f, &env->tlb->tlb_in_use);
213 for(i = 0; i < MIPS_TLB_MAX; i++) {
214 uint16_t flags;
215 uint8_t asid;
216
217 qemu_get_betls(f, &env->tlb->mmu.r4k.tlb[i].VPN);
218 qemu_get_be32s(f, &env->tlb->mmu.r4k.tlb[i].PageMask);
219 qemu_get_8s(f, &asid);
220 env->tlb->mmu.r4k.tlb[i].ASID = asid;
221 qemu_get_be16s(f, &flags);
222 env->tlb->mmu.r4k.tlb[i].G = (flags >> 10) & 1;
223 env->tlb->mmu.r4k.tlb[i].C0 = (flags >> 7) & 3;
224 env->tlb->mmu.r4k.tlb[i].C1 = (flags >> 4) & 3;
225 env->tlb->mmu.r4k.tlb[i].V0 = (flags >> 3) & 1;
226 env->tlb->mmu.r4k.tlb[i].V1 = (flags >> 2) & 1;
227 env->tlb->mmu.r4k.tlb[i].D0 = (flags >> 1) & 1;
228 env->tlb->mmu.r4k.tlb[i].D1 = (flags >> 0) & 1;
229 qemu_get_betls(f, &env->tlb->mmu.r4k.tlb[i].PFN[0]);
230 qemu_get_betls(f, &env->tlb->mmu.r4k.tlb[i].PFN[1]);
231 }
232
233 /* Load CPU metastate */
234 qemu_get_be32s(f, &env->current_tc);
235 qemu_get_be32s(f, &env->current_fpu);
236 qemu_get_sbe32s(f, &env->error_code);
237 qemu_get_be32s(f, &env->hflags);
238 qemu_get_betls(f, &env->btarget);
239 qemu_get_sbe32s(f, &i);
240 env->bcond = i;
241
242 /* Load remaining CP1 registers */
243 qemu_get_sbe32s(f, &env->CP0_Index);
244 qemu_get_sbe32s(f, &env->CP0_Random);
245 qemu_get_sbe32s(f, &env->CP0_VPEControl);
246 qemu_get_sbe32s(f, &env->CP0_VPEConf0);
247 qemu_get_sbe32s(f, &env->CP0_VPEConf1);
248 qemu_get_betls(f, &env->CP0_YQMask);
249 qemu_get_betls(f, &env->CP0_VPESchedule);
250 qemu_get_betls(f, &env->CP0_VPEScheFBack);
251 qemu_get_sbe32s(f, &env->CP0_VPEOpt);
252 qemu_get_betls(f, &env->CP0_EntryLo0);
253 qemu_get_betls(f, &env->CP0_EntryLo1);
254 qemu_get_betls(f, &env->CP0_Context);
255 qemu_get_sbe32s(f, &env->CP0_PageMask);
256 qemu_get_sbe32s(f, &env->CP0_PageGrain);
257 qemu_get_sbe32s(f, &env->CP0_Wired);
258 qemu_get_sbe32s(f, &env->CP0_SRSConf0);
259 qemu_get_sbe32s(f, &env->CP0_SRSConf1);
260 qemu_get_sbe32s(f, &env->CP0_SRSConf2);
261 qemu_get_sbe32s(f, &env->CP0_SRSConf3);
262 qemu_get_sbe32s(f, &env->CP0_SRSConf4);
263 qemu_get_sbe32s(f, &env->CP0_HWREna);
264 qemu_get_betls(f, &env->CP0_BadVAddr);
265 qemu_get_sbe32s(f, &env->CP0_Count);
266 qemu_get_betls(f, &env->CP0_EntryHi);
267 qemu_get_sbe32s(f, &env->CP0_Compare);
268 qemu_get_sbe32s(f, &env->CP0_Status);
269 qemu_get_sbe32s(f, &env->CP0_IntCtl);
270 qemu_get_sbe32s(f, &env->CP0_SRSCtl);
271 qemu_get_sbe32s(f, &env->CP0_SRSMap);
272 qemu_get_sbe32s(f, &env->CP0_Cause);
273 qemu_get_betls(f, &env->CP0_EPC);
274 qemu_get_sbe32s(f, &env->CP0_PRid);
275 qemu_get_sbe32s(f, &env->CP0_EBase);
276 qemu_get_sbe32s(f, &env->CP0_Config0);
277 qemu_get_sbe32s(f, &env->CP0_Config1);
278 qemu_get_sbe32s(f, &env->CP0_Config2);
279 qemu_get_sbe32s(f, &env->CP0_Config3);
280 qemu_get_sbe32s(f, &env->CP0_Config6);
281 qemu_get_sbe32s(f, &env->CP0_Config7);
282 qemu_get_betls(f, &env->lladdr);
283 for(i = 0; i < 8; i++)
284 qemu_get_betls(f, &env->CP0_WatchLo[i]);
285 for(i = 0; i < 8; i++)
286 qemu_get_sbe32s(f, &env->CP0_WatchHi[i]);
287 qemu_get_betls(f, &env->CP0_XContext);
288 qemu_get_sbe32s(f, &env->CP0_Framemask);
289 qemu_get_sbe32s(f, &env->CP0_Debug);
290 qemu_get_betls(f, &env->CP0_DEPC);
291 qemu_get_sbe32s(f, &env->CP0_Performance0);
292 qemu_get_sbe32s(f, &env->CP0_TagLo);
293 qemu_get_sbe32s(f, &env->CP0_DataLo);
294 qemu_get_sbe32s(f, &env->CP0_TagHi);
295 qemu_get_sbe32s(f, &env->CP0_DataHi);
296 qemu_get_betls(f, &env->CP0_ErrorEPC);
297 qemu_get_sbe32s(f, &env->CP0_DESAVE);
298
299 /* Load inactive TC state */
300 for (i = 0; i < MIPS_SHADOW_SET_MAX; i++)
301 load_tc(f, &env->tcs[i]);
302 for (i = 0; i < MIPS_FPU_MAX; i++)
303 load_fpu(f, &env->fpus[i]);
304
305 /* XXX: ensure compatibility for halted bit ? */
306 tlb_flush(env, 1);
307 return 0;
308 }