Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [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. 2007 |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 16 | * Copyright 2011 Freescale Semiconductor, Inc. |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 17 | * |
| 18 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> |
| 19 | */ |
| 20 | |
| 21 | #include <linux/jiffies.h> |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 22 | #include <linux/hrtimer.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 23 | #include <linux/types.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/kvm_host.h> |
Bharat Bhushan | 6e35994 | 2012-04-18 06:01:19 +0000 | [diff] [blame] | 26 | #include <linux/clockchips.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 27 | |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 28 | #include <asm/reg.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 29 | #include <asm/time.h> |
| 30 | #include <asm/byteorder.h> |
| 31 | #include <asm/kvm_ppc.h> |
Hollis Blanchard | c381a04 | 2008-11-05 09:36:15 -0600 | [diff] [blame] | 32 | #include <asm/disassemble.h> |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 33 | #include "timing.h" |
Marcelo Tosatti | 46f43c6 | 2009-06-18 11:47:27 -0300 | [diff] [blame] | 34 | #include "trace.h" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 35 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 36 | #define OP_TRAP 3 |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 37 | #define OP_TRAP_64 2 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 38 | |
Alexander Graf | 6df79df | 2012-03-13 22:15:45 +0100 | [diff] [blame] | 39 | #define OP_31_XOP_TRAP 4 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 40 | #define OP_31_XOP_LWZX 23 |
Alexander Graf | 6df79df | 2012-03-13 22:15:45 +0100 | [diff] [blame] | 41 | #define OP_31_XOP_TRAP_64 68 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 42 | #define OP_31_XOP_LBZX 87 |
| 43 | #define OP_31_XOP_STWX 151 |
| 44 | #define OP_31_XOP_STBX 215 |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 45 | #define OP_31_XOP_LBZUX 119 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 46 | #define OP_31_XOP_STBUX 247 |
| 47 | #define OP_31_XOP_LHZX 279 |
| 48 | #define OP_31_XOP_LHZUX 311 |
| 49 | #define OP_31_XOP_MFSPR 339 |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 50 | #define OP_31_XOP_LHAX 343 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 51 | #define OP_31_XOP_STHX 407 |
| 52 | #define OP_31_XOP_STHUX 439 |
| 53 | #define OP_31_XOP_MTSPR 467 |
| 54 | #define OP_31_XOP_DCBI 470 |
| 55 | #define OP_31_XOP_LWBRX 534 |
| 56 | #define OP_31_XOP_TLBSYNC 566 |
| 57 | #define OP_31_XOP_STWBRX 662 |
| 58 | #define OP_31_XOP_LHBRX 790 |
| 59 | #define OP_31_XOP_STHBRX 918 |
| 60 | |
| 61 | #define OP_LWZ 32 |
| 62 | #define OP_LWZU 33 |
| 63 | #define OP_LBZ 34 |
| 64 | #define OP_LBZU 35 |
| 65 | #define OP_STW 36 |
| 66 | #define OP_STWU 37 |
| 67 | #define OP_STB 38 |
| 68 | #define OP_STBU 39 |
| 69 | #define OP_LHZ 40 |
| 70 | #define OP_LHZU 41 |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 71 | #define OP_LHA 42 |
| 72 | #define OP_LHAU 43 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 73 | #define OP_STH 44 |
| 74 | #define OP_STHU 45 |
| 75 | |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 76 | void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 77 | { |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 78 | unsigned long dec_nsec; |
Bharat Bhushan | dc2babfe | 2011-10-19 09:46:06 +0530 | [diff] [blame] | 79 | unsigned long long dec_time; |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 80 | |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 81 | pr_debug("mtDEC: %x\n", vcpu->arch.dec); |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 82 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
| 83 | |
Alexander Graf | 00c3a37 | 2010-04-16 00:11:42 +0200 | [diff] [blame] | 84 | #ifdef CONFIG_PPC_BOOK3S |
Alexander Graf | 7706664d | 2009-12-21 20:21:24 +0100 | [diff] [blame] | 85 | /* mtdec lowers the interrupt line when positive. */ |
| 86 | kvmppc_core_dequeue_dec(vcpu); |
| 87 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 88 | /* POWER4+ triggers a dec interrupt if the value is < 0 */ |
| 89 | if (vcpu->arch.dec & 0x80000000) { |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 90 | kvmppc_core_queue_dec(vcpu); |
| 91 | return; |
| 92 | } |
| 93 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 94 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 95 | #ifdef CONFIG_BOOKE |
| 96 | /* On BOOKE, DEC = 0 is as good as decrementer not enabled */ |
| 97 | if (vcpu->arch.dec == 0) |
| 98 | return; |
| 99 | #endif |
| 100 | |
| 101 | /* |
| 102 | * The decrementer ticks at the same rate as the timebase, so |
| 103 | * that's how we convert the guest DEC value to the number of |
| 104 | * host ticks. |
| 105 | */ |
| 106 | |
| 107 | dec_time = vcpu->arch.dec; |
Bharat Bhushan | 6e35994 | 2012-04-18 06:01:19 +0000 | [diff] [blame] | 108 | /* |
| 109 | * Guest timebase ticks at the same frequency as host decrementer. |
| 110 | * So use the host decrementer calculations for decrementer emulation. |
| 111 | */ |
| 112 | dec_time = dec_time << decrementer_clockevent.shift; |
| 113 | do_div(dec_time, decrementer_clockevent.mult); |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 114 | dec_nsec = do_div(dec_time, NSEC_PER_SEC); |
| 115 | hrtimer_start(&vcpu->arch.dec_timer, |
| 116 | ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL); |
| 117 | vcpu->arch.dec_jiffies = get_tb(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 118 | } |
| 119 | |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 120 | u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb) |
| 121 | { |
| 122 | u64 jd = tb - vcpu->arch.dec_jiffies; |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 123 | |
| 124 | #ifdef CONFIG_BOOKE |
| 125 | if (vcpu->arch.dec < jd) |
| 126 | return 0; |
| 127 | #endif |
| 128 | |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 129 | return vcpu->arch.dec - jd; |
| 130 | } |
| 131 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 132 | /* XXX to do: |
| 133 | * lhax |
| 134 | * lhaux |
| 135 | * lswx |
| 136 | * lswi |
| 137 | * stswx |
| 138 | * stswi |
| 139 | * lha |
| 140 | * lhau |
| 141 | * lmw |
| 142 | * stmw |
| 143 | * |
| 144 | * XXX is_bigendian should depend on MMU mapping or MSR[LE] |
| 145 | */ |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 146 | /* XXX Should probably auto-generate instruction decoding for a particular core |
| 147 | * from opcode tables in the future. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 148 | int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 149 | { |
Alexander Graf | c7f38f4 | 2010-04-16 00:11:40 +0200 | [diff] [blame] | 150 | u32 inst = kvmppc_get_last_inst(vcpu); |
Alexander Graf | c46dc9a | 2012-05-04 14:01:33 +0200 | [diff] [blame^] | 151 | int ra = get_ra(inst); |
| 152 | int rs = get_rs(inst); |
| 153 | int rt = get_rt(inst); |
| 154 | int sprn = get_sprn(inst); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 155 | enum emulation_result emulated = EMULATE_DONE; |
| 156 | int advance = 1; |
| 157 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 158 | /* this default type might be overwritten by subcategories */ |
| 159 | kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS); |
| 160 | |
Joe Perches | 689fd14 | 2010-09-11 19:10:53 +0000 | [diff] [blame] | 161 | pr_debug("Emulating opcode %d / %d\n", get_op(inst), get_xop(inst)); |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 162 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 163 | switch (get_op(inst)) { |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 164 | case OP_TRAP: |
Alexander Graf | 00c3a37 | 2010-04-16 00:11:42 +0200 | [diff] [blame] | 165 | #ifdef CONFIG_PPC_BOOK3S |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 166 | case OP_TRAP_64: |
Alexander Graf | 25a8a02 | 2010-01-08 02:58:07 +0100 | [diff] [blame] | 167 | kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP); |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 168 | #else |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 169 | kvmppc_core_queue_program(vcpu, |
| 170 | vcpu->arch.shared->esr | ESR_PTR); |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 171 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 172 | advance = 0; |
| 173 | break; |
| 174 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 175 | case 31: |
| 176 | switch (get_xop(inst)) { |
| 177 | |
Alexander Graf | 6df79df | 2012-03-13 22:15:45 +0100 | [diff] [blame] | 178 | case OP_31_XOP_TRAP: |
| 179 | #ifdef CONFIG_64BIT |
| 180 | case OP_31_XOP_TRAP_64: |
| 181 | #endif |
| 182 | #ifdef CONFIG_PPC_BOOK3S |
| 183 | kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP); |
| 184 | #else |
| 185 | kvmppc_core_queue_program(vcpu, |
| 186 | vcpu->arch.shared->esr | ESR_PTR); |
| 187 | #endif |
| 188 | advance = 0; |
| 189 | break; |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 190 | case OP_31_XOP_LWZX: |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 191 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| 192 | break; |
| 193 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 194 | case OP_31_XOP_LBZX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 195 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| 196 | break; |
| 197 | |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 198 | case OP_31_XOP_LBZUX: |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 199 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 200 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 201 | break; |
| 202 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 203 | case OP_31_XOP_STWX: |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 204 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 205 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 206 | 4, 1); |
| 207 | break; |
| 208 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 209 | case OP_31_XOP_STBX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 210 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 211 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 212 | 1, 1); |
| 213 | break; |
| 214 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 215 | case OP_31_XOP_STBUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 216 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 217 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 218 | 1, 1); |
Alexander Graf | 978b4fa | 2012-04-27 01:00:17 +0200 | [diff] [blame] | 219 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 220 | break; |
| 221 | |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 222 | case OP_31_XOP_LHAX: |
Alexander Graf | 1c85e73 | 2010-03-24 21:48:27 +0100 | [diff] [blame] | 223 | emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1); |
| 224 | break; |
| 225 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 226 | case OP_31_XOP_LHZX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 227 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| 228 | break; |
| 229 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 230 | case OP_31_XOP_LHZUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 231 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 232 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 233 | break; |
| 234 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 235 | case OP_31_XOP_MFSPR: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 236 | switch (sprn) { |
| 237 | case SPRN_SRR0: |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 238 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->srr0); |
| 239 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 240 | case SPRN_SRR1: |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 241 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->srr1); |
| 242 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 243 | case SPRN_PVR: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 244 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.pvr); break; |
Liu Yu | 06579dd | 2009-06-05 14:54:31 +0800 | [diff] [blame] | 245 | case SPRN_PIR: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 246 | kvmppc_set_gpr(vcpu, rt, vcpu->vcpu_id); break; |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 247 | case SPRN_MSSSR0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 248 | kvmppc_set_gpr(vcpu, rt, 0); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 249 | |
| 250 | /* Note: mftb and TBRL/TBWL are user-accessible, so |
| 251 | * the guest can always access the real TB anyways. |
| 252 | * In fact, we probably will never see these traps. */ |
| 253 | case SPRN_TBWL: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 254 | kvmppc_set_gpr(vcpu, rt, get_tb() >> 32); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 255 | case SPRN_TBWU: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 256 | kvmppc_set_gpr(vcpu, rt, get_tb()); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 257 | |
| 258 | case SPRN_SPRG0: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 259 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg0); |
| 260 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 261 | case SPRN_SPRG1: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 262 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg1); |
| 263 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 264 | case SPRN_SPRG2: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 265 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg2); |
| 266 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 267 | case SPRN_SPRG3: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 268 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg3); |
| 269 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 270 | /* Note: SPRG4-7 are user-readable, so we don't get |
| 271 | * a trap. */ |
| 272 | |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 273 | case SPRN_DEC: |
| 274 | { |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 275 | kvmppc_set_gpr(vcpu, rt, |
| 276 | kvmppc_get_dec(vcpu, get_tb())); |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 277 | break; |
| 278 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 279 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 280 | emulated = kvmppc_core_emulate_mfspr(vcpu, sprn, rt); |
| 281 | if (emulated == EMULATE_FAIL) { |
| 282 | printk("mfspr: unknown spr %x\n", sprn); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 283 | kvmppc_set_gpr(vcpu, rt, 0); |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 284 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 285 | break; |
| 286 | } |
Scott Wood | 49ea069 | 2011-03-28 15:01:24 -0500 | [diff] [blame] | 287 | kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 288 | break; |
| 289 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 290 | case OP_31_XOP_STHX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 291 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 292 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 293 | 2, 1); |
| 294 | break; |
| 295 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 296 | case OP_31_XOP_STHUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 297 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 298 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 299 | 2, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 300 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 301 | break; |
| 302 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 303 | case OP_31_XOP_MTSPR: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 304 | switch (sprn) { |
| 305 | case SPRN_SRR0: |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 306 | vcpu->arch.shared->srr0 = kvmppc_get_gpr(vcpu, rs); |
| 307 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 308 | case SPRN_SRR1: |
Alexander Graf | de7906c | 2010-07-29 14:47:46 +0200 | [diff] [blame] | 309 | vcpu->arch.shared->srr1 = kvmppc_get_gpr(vcpu, rs); |
| 310 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 311 | |
| 312 | /* XXX We need to context-switch the timebase for |
| 313 | * watchdog and FIT. */ |
| 314 | case SPRN_TBWL: break; |
| 315 | case SPRN_TBWU: break; |
| 316 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 317 | case SPRN_MSSSR0: break; |
| 318 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 319 | case SPRN_DEC: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 320 | vcpu->arch.dec = kvmppc_get_gpr(vcpu, rs); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 321 | kvmppc_emulate_dec(vcpu); |
| 322 | break; |
| 323 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 324 | case SPRN_SPRG0: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 325 | vcpu->arch.shared->sprg0 = kvmppc_get_gpr(vcpu, rs); |
| 326 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 327 | case SPRN_SPRG1: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 328 | vcpu->arch.shared->sprg1 = kvmppc_get_gpr(vcpu, rs); |
| 329 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 330 | case SPRN_SPRG2: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 331 | vcpu->arch.shared->sprg2 = kvmppc_get_gpr(vcpu, rs); |
| 332 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 333 | case SPRN_SPRG3: |
Alexander Graf | a73a959 | 2010-07-29 14:47:47 +0200 | [diff] [blame] | 334 | vcpu->arch.shared->sprg3 = kvmppc_get_gpr(vcpu, rs); |
| 335 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 336 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 337 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 338 | emulated = kvmppc_core_emulate_mtspr(vcpu, sprn, rs); |
| 339 | if (emulated == EMULATE_FAIL) |
| 340 | printk("mtspr: unknown spr %x\n", sprn); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 341 | break; |
| 342 | } |
Scott Wood | 49ea069 | 2011-03-28 15:01:24 -0500 | [diff] [blame] | 343 | kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 344 | break; |
| 345 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 346 | case OP_31_XOP_DCBI: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 347 | /* Do nothing. The guest is performing dcbi because |
| 348 | * hardware DMA is not snooped by the dcache, but |
| 349 | * emulated DMA either goes through the dcache as |
| 350 | * normal writes, or the host kernel has handled dcache |
| 351 | * coherence. */ |
| 352 | break; |
| 353 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 354 | case OP_31_XOP_LWBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 355 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0); |
| 356 | break; |
| 357 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 358 | case OP_31_XOP_TLBSYNC: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 359 | break; |
| 360 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 361 | case OP_31_XOP_STWBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 362 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 363 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 364 | 4, 0); |
| 365 | break; |
| 366 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 367 | case OP_31_XOP_LHBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 368 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0); |
| 369 | break; |
| 370 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 371 | case OP_31_XOP_STHBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 372 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 373 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 374 | 2, 0); |
| 375 | break; |
| 376 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 377 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 378 | /* Attempt core-specific emulation below. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 379 | emulated = EMULATE_FAIL; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 380 | } |
| 381 | break; |
| 382 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 383 | case OP_LWZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 384 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| 385 | break; |
| 386 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 387 | case OP_LWZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 388 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 389 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 390 | break; |
| 391 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 392 | case OP_LBZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 393 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| 394 | break; |
| 395 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 396 | case OP_LBZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 397 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 398 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 399 | break; |
| 400 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 401 | case OP_STW: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 402 | emulated = kvmppc_handle_store(run, vcpu, |
| 403 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 404 | 4, 1); |
| 405 | break; |
| 406 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 407 | case OP_STWU: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 408 | emulated = kvmppc_handle_store(run, vcpu, |
| 409 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 410 | 4, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 411 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 412 | break; |
| 413 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 414 | case OP_STB: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 415 | emulated = kvmppc_handle_store(run, vcpu, |
| 416 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 417 | 1, 1); |
| 418 | break; |
| 419 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 420 | case OP_STBU: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 421 | emulated = kvmppc_handle_store(run, vcpu, |
| 422 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 423 | 1, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 424 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 425 | break; |
| 426 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 427 | case OP_LHZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 428 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| 429 | break; |
| 430 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 431 | case OP_LHZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 432 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 433 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 434 | break; |
| 435 | |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 436 | case OP_LHA: |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 437 | emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1); |
| 438 | break; |
| 439 | |
| 440 | case OP_LHAU: |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 441 | emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 442 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 443 | break; |
| 444 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 445 | case OP_STH: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 446 | emulated = kvmppc_handle_store(run, vcpu, |
| 447 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 448 | 2, 1); |
| 449 | break; |
| 450 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 451 | case OP_STHU: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 452 | emulated = kvmppc_handle_store(run, vcpu, |
| 453 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 454 | 2, 1); |
Alexander Graf | 6020c0f | 2012-03-12 02:26:30 +0100 | [diff] [blame] | 455 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 456 | break; |
| 457 | |
| 458 | default: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 459 | emulated = EMULATE_FAIL; |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | if (emulated == EMULATE_FAIL) { |
| 463 | emulated = kvmppc_core_emulate_op(run, vcpu, inst, &advance); |
Alexander Graf | 37f5bca | 2010-02-19 11:00:31 +0100 | [diff] [blame] | 464 | if (emulated == EMULATE_AGAIN) { |
| 465 | advance = 0; |
| 466 | } else if (emulated == EMULATE_FAIL) { |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 467 | advance = 0; |
| 468 | printk(KERN_ERR "Couldn't emulate instruction 0x%08x " |
| 469 | "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst)); |
Alexander Graf | 5f2b105 | 2010-01-10 03:27:32 +0100 | [diff] [blame] | 470 | kvmppc_core_queue_program(vcpu, 0); |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 471 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 472 | } |
| 473 | |
Alexander Graf | c7f38f4 | 2010-04-16 00:11:40 +0200 | [diff] [blame] | 474 | trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated); |
Christian Ehrhardt | 3b4bd79 | 2008-07-14 14:00:04 +0200 | [diff] [blame] | 475 | |
Alexander Graf | c7f38f4 | 2010-04-16 00:11:40 +0200 | [diff] [blame] | 476 | /* Advance past emulated instruction. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 477 | if (advance) |
Alexander Graf | c7f38f4 | 2010-04-16 00:11:40 +0200 | [diff] [blame] | 478 | kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 479 | |
| 480 | return emulated; |
| 481 | } |