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 |
| 16 | * |
| 17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> |
| 18 | */ |
| 19 | |
| 20 | #include <linux/jiffies.h> |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 21 | #include <linux/hrtimer.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 22 | #include <linux/types.h> |
| 23 | #include <linux/string.h> |
| 24 | #include <linux/kvm_host.h> |
| 25 | |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 26 | #include <asm/reg.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 27 | #include <asm/time.h> |
| 28 | #include <asm/byteorder.h> |
| 29 | #include <asm/kvm_ppc.h> |
Hollis Blanchard | c381a04 | 2008-11-05 09:36:15 -0600 | [diff] [blame] | 30 | #include <asm/disassemble.h> |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 31 | #include "timing.h" |
Marcelo Tosatti | 46f43c6 | 2009-06-18 11:47:27 -0300 | [diff] [blame] | 32 | #include "trace.h" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 33 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 34 | #define OP_TRAP 3 |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 35 | #define OP_TRAP_64 2 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 36 | |
| 37 | #define OP_31_XOP_LWZX 23 |
| 38 | #define OP_31_XOP_LBZX 87 |
| 39 | #define OP_31_XOP_STWX 151 |
| 40 | #define OP_31_XOP_STBX 215 |
| 41 | #define OP_31_XOP_STBUX 247 |
| 42 | #define OP_31_XOP_LHZX 279 |
| 43 | #define OP_31_XOP_LHZUX 311 |
| 44 | #define OP_31_XOP_MFSPR 339 |
| 45 | #define OP_31_XOP_STHX 407 |
| 46 | #define OP_31_XOP_STHUX 439 |
| 47 | #define OP_31_XOP_MTSPR 467 |
| 48 | #define OP_31_XOP_DCBI 470 |
| 49 | #define OP_31_XOP_LWBRX 534 |
| 50 | #define OP_31_XOP_TLBSYNC 566 |
| 51 | #define OP_31_XOP_STWBRX 662 |
| 52 | #define OP_31_XOP_LHBRX 790 |
| 53 | #define OP_31_XOP_STHBRX 918 |
| 54 | |
| 55 | #define OP_LWZ 32 |
| 56 | #define OP_LWZU 33 |
| 57 | #define OP_LBZ 34 |
| 58 | #define OP_LBZU 35 |
| 59 | #define OP_STW 36 |
| 60 | #define OP_STWU 37 |
| 61 | #define OP_STB 38 |
| 62 | #define OP_STBU 39 |
| 63 | #define OP_LHZ 40 |
| 64 | #define OP_LHZU 41 |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame^] | 65 | #define OP_LHA 42 |
| 66 | #define OP_LHAU 43 |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 67 | #define OP_STH 44 |
| 68 | #define OP_STHU 45 |
| 69 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 70 | #ifdef CONFIG_PPC64 |
| 71 | static int kvmppc_dec_enabled(struct kvm_vcpu *vcpu) |
| 72 | { |
| 73 | return 1; |
| 74 | } |
| 75 | #else |
| 76 | static int kvmppc_dec_enabled(struct kvm_vcpu *vcpu) |
| 77 | { |
| 78 | return vcpu->arch.tcr & TCR_DIE; |
| 79 | } |
| 80 | #endif |
| 81 | |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 82 | void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 83 | { |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 84 | unsigned long dec_nsec; |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 85 | |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 86 | pr_debug("mtDEC: %x\n", vcpu->arch.dec); |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 87 | #ifdef CONFIG_PPC64 |
Alexander Graf | 7706664d | 2009-12-21 20:21:24 +0100 | [diff] [blame] | 88 | /* mtdec lowers the interrupt line when positive. */ |
| 89 | kvmppc_core_dequeue_dec(vcpu); |
| 90 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 91 | /* POWER4+ triggers a dec interrupt if the value is < 0 */ |
| 92 | if (vcpu->arch.dec & 0x80000000) { |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 93 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 94 | kvmppc_core_queue_dec(vcpu); |
| 95 | return; |
| 96 | } |
| 97 | #endif |
| 98 | if (kvmppc_dec_enabled(vcpu)) { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 99 | /* The decrementer ticks at the same rate as the timebase, so |
| 100 | * that's how we convert the guest DEC value to the number of |
| 101 | * host ticks. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 102 | |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 103 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
| 104 | dec_nsec = vcpu->arch.dec; |
| 105 | dec_nsec *= 1000; |
| 106 | dec_nsec /= tb_ticks_per_usec; |
| 107 | hrtimer_start(&vcpu->arch.dec_timer, ktime_set(0, dec_nsec), |
| 108 | HRTIMER_MODE_REL); |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 109 | vcpu->arch.dec_jiffies = get_tb(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 110 | } else { |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 111 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 112 | } |
| 113 | } |
| 114 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 115 | /* XXX to do: |
| 116 | * lhax |
| 117 | * lhaux |
| 118 | * lswx |
| 119 | * lswi |
| 120 | * stswx |
| 121 | * stswi |
| 122 | * lha |
| 123 | * lhau |
| 124 | * lmw |
| 125 | * stmw |
| 126 | * |
| 127 | * XXX is_bigendian should depend on MMU mapping or MSR[LE] |
| 128 | */ |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 129 | /* XXX Should probably auto-generate instruction decoding for a particular core |
| 130 | * from opcode tables in the future. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 131 | int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 132 | { |
| 133 | u32 inst = vcpu->arch.last_inst; |
| 134 | u32 ea; |
| 135 | int ra; |
| 136 | int rb; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 137 | int rs; |
| 138 | int rt; |
| 139 | int sprn; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 140 | enum emulation_result emulated = EMULATE_DONE; |
| 141 | int advance = 1; |
| 142 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 143 | /* this default type might be overwritten by subcategories */ |
| 144 | kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS); |
| 145 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 146 | pr_debug(KERN_INFO "Emulating opcode %d / %d\n", get_op(inst), get_xop(inst)); |
| 147 | |
Alexander Graf | b4433a7 | 2010-01-08 02:58:04 +0100 | [diff] [blame] | 148 | /* Try again next time */ |
| 149 | if (inst == KVM_INST_FETCH_FAILED) |
| 150 | return EMULATE_DONE; |
| 151 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 152 | switch (get_op(inst)) { |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 153 | case OP_TRAP: |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 154 | #ifdef CONFIG_PPC64 |
| 155 | case OP_TRAP_64: |
Alexander Graf | 25a8a02 | 2010-01-08 02:58:07 +0100 | [diff] [blame] | 156 | kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP); |
Liu Yu | daf5e27 | 2010-02-02 19:44:35 +0800 | [diff] [blame] | 157 | #else |
| 158 | kvmppc_core_queue_program(vcpu, vcpu->arch.esr | ESR_PTR); |
| 159 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 160 | advance = 0; |
| 161 | break; |
| 162 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 163 | case 31: |
| 164 | switch (get_xop(inst)) { |
| 165 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 166 | case OP_31_XOP_LWZX: |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 167 | rt = get_rt(inst); |
| 168 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| 169 | break; |
| 170 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 171 | case OP_31_XOP_LBZX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 172 | rt = get_rt(inst); |
| 173 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| 174 | break; |
| 175 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 176 | case OP_31_XOP_STWX: |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 177 | rs = get_rs(inst); |
| 178 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 179 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | ac3cd34 | 2008-05-21 18:22:52 -0500 | [diff] [blame] | 180 | 4, 1); |
| 181 | break; |
| 182 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 183 | case OP_31_XOP_STBX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 184 | rs = get_rs(inst); |
| 185 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 186 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 187 | 1, 1); |
| 188 | break; |
| 189 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 190 | case OP_31_XOP_STBUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 191 | rs = get_rs(inst); |
| 192 | ra = get_ra(inst); |
| 193 | rb = get_rb(inst); |
| 194 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 195 | ea = kvmppc_get_gpr(vcpu, rb); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 196 | if (ra) |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 197 | ea += kvmppc_get_gpr(vcpu, ra); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 198 | |
| 199 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 200 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 201 | 1, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 202 | kvmppc_set_gpr(vcpu, rs, ea); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 203 | break; |
| 204 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 205 | case OP_31_XOP_LHZX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 206 | rt = get_rt(inst); |
| 207 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| 208 | break; |
| 209 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 210 | case OP_31_XOP_LHZUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 211 | rt = get_rt(inst); |
| 212 | ra = get_ra(inst); |
| 213 | rb = get_rb(inst); |
| 214 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 215 | ea = kvmppc_get_gpr(vcpu, rb); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 216 | if (ra) |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 217 | ea += kvmppc_get_gpr(vcpu, ra); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 218 | |
| 219 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 220 | kvmppc_set_gpr(vcpu, ra, ea); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 221 | break; |
| 222 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 223 | case OP_31_XOP_MFSPR: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 224 | sprn = get_sprn(inst); |
| 225 | rt = get_rt(inst); |
| 226 | |
| 227 | switch (sprn) { |
| 228 | case SPRN_SRR0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 229 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.srr0); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 230 | case SPRN_SRR1: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 231 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.srr1); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 232 | case SPRN_PVR: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 233 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.pvr); break; |
Liu Yu | 06579dd | 2009-06-05 14:54:31 +0800 | [diff] [blame] | 234 | case SPRN_PIR: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 235 | kvmppc_set_gpr(vcpu, rt, vcpu->vcpu_id); break; |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 236 | case SPRN_MSSSR0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 237 | kvmppc_set_gpr(vcpu, rt, 0); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 238 | |
| 239 | /* Note: mftb and TBRL/TBWL are user-accessible, so |
| 240 | * the guest can always access the real TB anyways. |
| 241 | * In fact, we probably will never see these traps. */ |
| 242 | case SPRN_TBWL: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 243 | kvmppc_set_gpr(vcpu, rt, get_tb() >> 32); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 244 | case SPRN_TBWU: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 245 | kvmppc_set_gpr(vcpu, rt, get_tb()); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 246 | |
| 247 | case SPRN_SPRG0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 248 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg0); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 249 | case SPRN_SPRG1: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 250 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg1); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 251 | case SPRN_SPRG2: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 252 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg2); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 253 | case SPRN_SPRG3: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 254 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg3); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 255 | /* Note: SPRG4-7 are user-readable, so we don't get |
| 256 | * a trap. */ |
| 257 | |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 258 | case SPRN_DEC: |
| 259 | { |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 260 | u64 jd = get_tb() - vcpu->arch.dec_jiffies; |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 261 | kvmppc_set_gpr(vcpu, rt, vcpu->arch.dec - jd); |
| 262 | pr_debug(KERN_INFO "mfDEC: %x - %llx = %lx\n", |
| 263 | vcpu->arch.dec, jd, |
| 264 | kvmppc_get_gpr(vcpu, rt)); |
Alexander Graf | 9a7a9b0 | 2009-10-30 05:47:15 +0000 | [diff] [blame] | 265 | break; |
| 266 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 267 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 268 | emulated = kvmppc_core_emulate_mfspr(vcpu, sprn, rt); |
| 269 | if (emulated == EMULATE_FAIL) { |
| 270 | printk("mfspr: unknown spr %x\n", sprn); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 271 | kvmppc_set_gpr(vcpu, rt, 0); |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 272 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 273 | break; |
| 274 | } |
| 275 | break; |
| 276 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 277 | case OP_31_XOP_STHX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 278 | rs = get_rs(inst); |
| 279 | ra = get_ra(inst); |
| 280 | rb = get_rb(inst); |
| 281 | |
| 282 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 283 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 284 | 2, 1); |
| 285 | break; |
| 286 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 287 | case OP_31_XOP_STHUX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 288 | rs = get_rs(inst); |
| 289 | ra = get_ra(inst); |
| 290 | rb = get_rb(inst); |
| 291 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 292 | ea = kvmppc_get_gpr(vcpu, rb); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 293 | if (ra) |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 294 | ea += kvmppc_get_gpr(vcpu, ra); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 295 | |
| 296 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 297 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 298 | 2, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 299 | kvmppc_set_gpr(vcpu, ra, ea); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 300 | break; |
| 301 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 302 | case OP_31_XOP_MTSPR: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 303 | sprn = get_sprn(inst); |
| 304 | rs = get_rs(inst); |
| 305 | switch (sprn) { |
| 306 | case SPRN_SRR0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 307 | vcpu->arch.srr0 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 308 | case SPRN_SRR1: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 309 | vcpu->arch.srr1 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 310 | |
| 311 | /* XXX We need to context-switch the timebase for |
| 312 | * watchdog and FIT. */ |
| 313 | case SPRN_TBWL: break; |
| 314 | case SPRN_TBWU: break; |
| 315 | |
Alexander Graf | 513579e | 2009-10-30 05:47:16 +0000 | [diff] [blame] | 316 | case SPRN_MSSSR0: break; |
| 317 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 318 | case SPRN_DEC: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 319 | vcpu->arch.dec = kvmppc_get_gpr(vcpu, rs); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 320 | kvmppc_emulate_dec(vcpu); |
| 321 | break; |
| 322 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 323 | case SPRN_SPRG0: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 324 | vcpu->arch.sprg0 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 325 | case SPRN_SPRG1: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 326 | vcpu->arch.sprg1 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 327 | case SPRN_SPRG2: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 328 | vcpu->arch.sprg2 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 329 | case SPRN_SPRG3: |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 330 | vcpu->arch.sprg3 = kvmppc_get_gpr(vcpu, rs); break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 331 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 332 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 333 | emulated = kvmppc_core_emulate_mtspr(vcpu, sprn, rs); |
| 334 | if (emulated == EMULATE_FAIL) |
| 335 | printk("mtspr: unknown spr %x\n", sprn); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 336 | break; |
| 337 | } |
| 338 | break; |
| 339 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 340 | case OP_31_XOP_DCBI: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 341 | /* Do nothing. The guest is performing dcbi because |
| 342 | * hardware DMA is not snooped by the dcache, but |
| 343 | * emulated DMA either goes through the dcache as |
| 344 | * normal writes, or the host kernel has handled dcache |
| 345 | * coherence. */ |
| 346 | break; |
| 347 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 348 | case OP_31_XOP_LWBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 349 | rt = get_rt(inst); |
| 350 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0); |
| 351 | break; |
| 352 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 353 | case OP_31_XOP_TLBSYNC: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 354 | break; |
| 355 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 356 | case OP_31_XOP_STWBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 357 | rs = get_rs(inst); |
| 358 | ra = get_ra(inst); |
| 359 | rb = get_rb(inst); |
| 360 | |
| 361 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 362 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 363 | 4, 0); |
| 364 | break; |
| 365 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 366 | case OP_31_XOP_LHBRX: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 367 | rt = get_rt(inst); |
| 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 | rs = get_rs(inst); |
| 373 | ra = get_ra(inst); |
| 374 | rb = get_rb(inst); |
| 375 | |
| 376 | emulated = kvmppc_handle_store(run, vcpu, |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 377 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 378 | 2, 0); |
| 379 | break; |
| 380 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 381 | default: |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 382 | /* Attempt core-specific emulation below. */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 383 | emulated = EMULATE_FAIL; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 384 | } |
| 385 | break; |
| 386 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 387 | case OP_LWZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 388 | rt = get_rt(inst); |
| 389 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| 390 | break; |
| 391 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 392 | case OP_LWZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 393 | ra = get_ra(inst); |
| 394 | rt = get_rt(inst); |
| 395 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 396 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 397 | break; |
| 398 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 399 | case OP_LBZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 400 | rt = get_rt(inst); |
| 401 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| 402 | break; |
| 403 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 404 | case OP_LBZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 405 | ra = get_ra(inst); |
| 406 | rt = get_rt(inst); |
| 407 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 408 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 409 | break; |
| 410 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 411 | case OP_STW: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 412 | rs = get_rs(inst); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 413 | emulated = kvmppc_handle_store(run, vcpu, |
| 414 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 415 | 4, 1); |
| 416 | break; |
| 417 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 418 | case OP_STWU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 419 | ra = get_ra(inst); |
| 420 | rs = get_rs(inst); |
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 | 4, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 424 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_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_STB: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 428 | rs = get_rs(inst); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 429 | emulated = kvmppc_handle_store(run, vcpu, |
| 430 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 431 | 1, 1); |
| 432 | break; |
| 433 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 434 | case OP_STBU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 435 | ra = get_ra(inst); |
| 436 | rs = get_rs(inst); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 437 | emulated = kvmppc_handle_store(run, vcpu, |
| 438 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 439 | 1, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 440 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 441 | break; |
| 442 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 443 | case OP_LHZ: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 444 | rt = get_rt(inst); |
| 445 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| 446 | break; |
| 447 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 448 | case OP_LHZU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 449 | ra = get_ra(inst); |
| 450 | rt = get_rt(inst); |
| 451 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 452 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 453 | break; |
| 454 | |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame^] | 455 | case OP_LHA: |
| 456 | rt = get_rt(inst); |
| 457 | emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1); |
| 458 | break; |
| 459 | |
| 460 | case OP_LHAU: |
| 461 | ra = get_ra(inst); |
| 462 | rt = get_rt(inst); |
| 463 | emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1); |
| 464 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
| 465 | break; |
| 466 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 467 | case OP_STH: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 468 | rs = get_rs(inst); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 469 | emulated = kvmppc_handle_store(run, vcpu, |
| 470 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 471 | 2, 1); |
| 472 | break; |
| 473 | |
Hollis Blanchard | cea5d8c | 2009-01-03 16:23:05 -0600 | [diff] [blame] | 474 | case OP_STHU: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 475 | ra = get_ra(inst); |
| 476 | rs = get_rs(inst); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 477 | emulated = kvmppc_handle_store(run, vcpu, |
| 478 | kvmppc_get_gpr(vcpu, rs), |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 479 | 2, 1); |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 480 | kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 481 | break; |
| 482 | |
| 483 | default: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 484 | emulated = EMULATE_FAIL; |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | if (emulated == EMULATE_FAIL) { |
| 488 | emulated = kvmppc_core_emulate_op(run, vcpu, inst, &advance); |
| 489 | if (emulated == EMULATE_FAIL) { |
| 490 | advance = 0; |
| 491 | printk(KERN_ERR "Couldn't emulate instruction 0x%08x " |
| 492 | "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst)); |
Alexander Graf | 5f2b105 | 2010-01-10 03:27:32 +0100 | [diff] [blame] | 493 | kvmppc_core_queue_program(vcpu, 0); |
Hollis Blanchard | 75f74f0 | 2008-11-05 09:36:16 -0600 | [diff] [blame] | 494 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 495 | } |
| 496 | |
Marcelo Tosatti | 46f43c6 | 2009-06-18 11:47:27 -0300 | [diff] [blame] | 497 | trace_kvm_ppc_instr(inst, vcpu->arch.pc, emulated); |
Christian Ehrhardt | 3b4bd79 | 2008-07-14 14:00:04 +0200 | [diff] [blame] | 498 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 499 | if (advance) |
| 500 | vcpu->arch.pc += 4; /* Advance past emulated instruction. */ |
| 501 | |
| 502 | return emulated; |
| 503 | } |