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gerrit-public.fairphone.software / kernel / msm / d0c7dc03442f7cbd8740d9a4e7a4e7f84bfa676d / . / arch / powerpc / kvm / booke_emulate.c
blob: 8aa78f1a1f875cc702aa21fdc5a9c6adbdcbcf8e [file] [log] [blame]
Hollis Blanchardd0c7dc02009-01-03 16:23:06 -0600[diff] [blame^]1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#include <linux/kvm_host.h>
21#include <asm/disassemble.h>
22
23#include "booke.h"
24
25#define OP_19_XOP_RFI 50
26
27#define OP_31_XOP_MFMSR 83
28#define OP_31_XOP_WRTEE 131
29#define OP_31_XOP_MTMSR 146
30#define OP_31_XOP_WRTEEI 163
31
32static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
33{
34 vcpu->arch.pc = vcpu->arch.srr0;
35 kvmppc_set_msr(vcpu, vcpu->arch.srr1);
36}
37
38int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
39 unsigned int inst, int *advance)
40{
41 int emulated = EMULATE_DONE;
42 int rs;
43 int rt;
44
45 switch (get_op(inst)) {
46 case 19:
47 switch (get_xop(inst)) {
48 case OP_19_XOP_RFI:
49 kvmppc_emul_rfi(vcpu);
50 kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
51 *advance = 0;
52 break;
53
54 default:
55 emulated = EMULATE_FAIL;
56 break;
57 }
58 break;
59
60 case 31:
61 switch (get_xop(inst)) {
62
63 case OP_31_XOP_MFMSR:
64 rt = get_rt(inst);
65 vcpu->arch.gpr[rt] = vcpu->arch.msr;
66 kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
67 break;
68
69 case OP_31_XOP_MTMSR:
70 rs = get_rs(inst);
71 kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
72 kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
73 break;
74
75 case OP_31_XOP_WRTEE:
76 rs = get_rs(inst);
77 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
78 | (vcpu->arch.gpr[rs] & MSR_EE);
79 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
80 break;
81
82 case OP_31_XOP_WRTEEI:
83 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
84 | (inst & MSR_EE);
85 kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
86 break;
87
88 default:
89 emulated = EMULATE_FAIL;
90 }
91
92 break;
93
94 default:
95 emulated = EMULATE_FAIL;
96 }
97
98 return emulated;
99}
100
101int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
102{
103 int emulated = EMULATE_DONE;
104
105 switch (sprn) {
106 case SPRN_DEAR:
107 vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
108 case SPRN_ESR:
109 vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
110 case SPRN_DBCR0:
111 vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
112 case SPRN_DBCR1:
113 vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
114 case SPRN_TSR:
115 vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
116 case SPRN_TCR:
117 vcpu->arch.tcr = vcpu->arch.gpr[rs];
118 kvmppc_emulate_dec(vcpu);
119 break;
120
121 /* Note: SPRG4-7 are user-readable. These values are
122 * loaded into the real SPRGs when resuming the
123 * guest. */
124 case SPRN_SPRG4:
125 vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
126 case SPRN_SPRG5:
127 vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
128 case SPRN_SPRG6:
129 vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
130 case SPRN_SPRG7:
131 vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
132
133 case SPRN_IVPR:
134 vcpu->arch.ivpr = vcpu->arch.gpr[rs];
135 break;
136 case SPRN_IVOR0:
137 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = vcpu->arch.gpr[rs];
138 break;
139 case SPRN_IVOR1:
140 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = vcpu->arch.gpr[rs];
141 break;
142 case SPRN_IVOR2:
143 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = vcpu->arch.gpr[rs];
144 break;
145 case SPRN_IVOR3:
146 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = vcpu->arch.gpr[rs];
147 break;
148 case SPRN_IVOR4:
149 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = vcpu->arch.gpr[rs];
150 break;
151 case SPRN_IVOR5:
152 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = vcpu->arch.gpr[rs];
153 break;
154 case SPRN_IVOR6:
155 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = vcpu->arch.gpr[rs];
156 break;
157 case SPRN_IVOR7:
158 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = vcpu->arch.gpr[rs];
159 break;
160 case SPRN_IVOR8:
161 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = vcpu->arch.gpr[rs];
162 break;
163 case SPRN_IVOR9:
164 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = vcpu->arch.gpr[rs];
165 break;
166 case SPRN_IVOR10:
167 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = vcpu->arch.gpr[rs];
168 break;
169 case SPRN_IVOR11:
170 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = vcpu->arch.gpr[rs];
171 break;
172 case SPRN_IVOR12:
173 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = vcpu->arch.gpr[rs];
174 break;
175 case SPRN_IVOR13:
176 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = vcpu->arch.gpr[rs];
177 break;
178 case SPRN_IVOR14:
179 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = vcpu->arch.gpr[rs];
180 break;
181 case SPRN_IVOR15:
182 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = vcpu->arch.gpr[rs];
183 break;
184
185 default:
186 emulated = EMULATE_FAIL;
187 }
188
189 return emulated;
190}
191
192int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
193{
194 int emulated = EMULATE_DONE;
195
196 switch (sprn) {
197 case SPRN_IVPR:
198 vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
199 case SPRN_DEAR:
200 vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
201 case SPRN_ESR:
202 vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
203 case SPRN_DBCR0:
204 vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
205 case SPRN_DBCR1:
206 vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
207
208 case SPRN_IVOR0:
209 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
210 break;
211 case SPRN_IVOR1:
212 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
213 break;
214 case SPRN_IVOR2:
215 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
216 break;
217 case SPRN_IVOR3:
218 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
219 break;
220 case SPRN_IVOR4:
221 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
222 break;
223 case SPRN_IVOR5:
224 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
225 break;
226 case SPRN_IVOR6:
227 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
228 break;
229 case SPRN_IVOR7:
230 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
231 break;
232 case SPRN_IVOR8:
233 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
234 break;
235 case SPRN_IVOR9:
236 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
237 break;
238 case SPRN_IVOR10:
239 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
240 break;
241 case SPRN_IVOR11:
242 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
243 break;
244 case SPRN_IVOR12:
245 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
246 break;
247 case SPRN_IVOR13:
248 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
249 break;
250 case SPRN_IVOR14:
251 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
252 break;
253 case SPRN_IVOR15:
254 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
255 break;
256
257 default:
258 emulated = EMULATE_FAIL;
259 }
260
261 return emulated;
262}