| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License, version 2, as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| * Copyright IBM Corp. 2007 |
| * |
| * Authors: Hollis Blanchard <hollisb@us.ibm.com> |
| */ |
| |
| #include <linux/jiffies.h> |
| #include <linux/timer.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/kvm_host.h> |
| |
| #include <asm/dcr.h> |
| #include <asm/dcr-regs.h> |
| #include <asm/time.h> |
| #include <asm/byteorder.h> |
| #include <asm/kvm_ppc.h> |
| |
| #include "44x_tlb.h" |
| |
| /* Instruction decoding */ |
| static inline unsigned int get_op(u32 inst) |
| { |
| return inst >> 26; |
| } |
| |
| static inline unsigned int get_xop(u32 inst) |
| { |
| return (inst >> 1) & 0x3ff; |
| } |
| |
| static inline unsigned int get_sprn(u32 inst) |
| { |
| return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); |
| } |
| |
| static inline unsigned int get_dcrn(u32 inst) |
| { |
| return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); |
| } |
| |
| static inline unsigned int get_rt(u32 inst) |
| { |
| return (inst >> 21) & 0x1f; |
| } |
| |
| static inline unsigned int get_rs(u32 inst) |
| { |
| return (inst >> 21) & 0x1f; |
| } |
| |
| static inline unsigned int get_ra(u32 inst) |
| { |
| return (inst >> 16) & 0x1f; |
| } |
| |
| static inline unsigned int get_rb(u32 inst) |
| { |
| return (inst >> 11) & 0x1f; |
| } |
| |
| static inline unsigned int get_rc(u32 inst) |
| { |
| return inst & 0x1; |
| } |
| |
| static inline unsigned int get_ws(u32 inst) |
| { |
| return (inst >> 11) & 0x1f; |
| } |
| |
| static inline unsigned int get_d(u32 inst) |
| { |
| return inst & 0xffff; |
| } |
| |
| static int tlbe_is_host_safe(const struct kvm_vcpu *vcpu, |
| const struct tlbe *tlbe) |
| { |
| gpa_t gpa; |
| |
| if (!get_tlb_v(tlbe)) |
| return 0; |
| |
| /* Does it match current guest AS? */ |
| /* XXX what about IS != DS? */ |
| if (get_tlb_ts(tlbe) != !!(vcpu->arch.msr & MSR_IS)) |
| return 0; |
| |
| gpa = get_tlb_raddr(tlbe); |
| if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT)) |
| /* Mapping is not for RAM. */ |
| return 0; |
| |
| return 1; |
| } |
| |
| static int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u32 inst) |
| { |
| u64 eaddr; |
| u64 raddr; |
| u64 asid; |
| u32 flags; |
| struct tlbe *tlbe; |
| unsigned int ra; |
| unsigned int rs; |
| unsigned int ws; |
| unsigned int index; |
| |
| ra = get_ra(inst); |
| rs = get_rs(inst); |
| ws = get_ws(inst); |
| |
| index = vcpu->arch.gpr[ra]; |
| if (index > PPC44x_TLB_SIZE) { |
| printk("%s: index %d\n", __func__, index); |
| kvmppc_dump_vcpu(vcpu); |
| return EMULATE_FAIL; |
| } |
| |
| tlbe = &vcpu->arch.guest_tlb[index]; |
| |
| /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ |
| if (tlbe->word0 & PPC44x_TLB_VALID) { |
| eaddr = get_tlb_eaddr(tlbe); |
| asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid; |
| kvmppc_mmu_invalidate(vcpu, eaddr, get_tlb_end(tlbe), asid); |
| } |
| |
| switch (ws) { |
| case PPC44x_TLB_PAGEID: |
| tlbe->tid = vcpu->arch.mmucr & 0xff; |
| tlbe->word0 = vcpu->arch.gpr[rs]; |
| break; |
| |
| case PPC44x_TLB_XLAT: |
| tlbe->word1 = vcpu->arch.gpr[rs]; |
| break; |
| |
| case PPC44x_TLB_ATTRIB: |
| tlbe->word2 = vcpu->arch.gpr[rs]; |
| break; |
| |
| default: |
| return EMULATE_FAIL; |
| } |
| |
| if (tlbe_is_host_safe(vcpu, tlbe)) { |
| eaddr = get_tlb_eaddr(tlbe); |
| raddr = get_tlb_raddr(tlbe); |
| asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid; |
| flags = tlbe->word2 & 0xffff; |
| |
| /* Create a 4KB mapping on the host. If the guest wanted a |
| * large page, only the first 4KB is mapped here and the rest |
| * are mapped on the fly. */ |
| kvmppc_mmu_map(vcpu, eaddr, raddr >> PAGE_SHIFT, asid, flags); |
| } |
| |
| KVMTRACE_5D(GTLB_WRITE, vcpu, index, |
| tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2, |
| handler); |
| |
| return EMULATE_DONE; |
| } |
| |
| static void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) |
| { |
| if (vcpu->arch.tcr & TCR_DIE) { |
| /* The decrementer ticks at the same rate as the timebase, so |
| * that's how we convert the guest DEC value to the number of |
| * host ticks. */ |
| unsigned long nr_jiffies; |
| |
| nr_jiffies = vcpu->arch.dec / tb_ticks_per_jiffy; |
| mod_timer(&vcpu->arch.dec_timer, |
| get_jiffies_64() + nr_jiffies); |
| } else { |
| del_timer(&vcpu->arch.dec_timer); |
| } |
| } |
| |
| static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu) |
| { |
| vcpu->arch.pc = vcpu->arch.srr0; |
| kvmppc_set_msr(vcpu, vcpu->arch.srr1); |
| } |
| |
| /* XXX to do: |
| * lhax |
| * lhaux |
| * lswx |
| * lswi |
| * stswx |
| * stswi |
| * lha |
| * lhau |
| * lmw |
| * stmw |
| * |
| * XXX is_bigendian should depend on MMU mapping or MSR[LE] |
| */ |
| int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| { |
| u32 inst = vcpu->arch.last_inst; |
| u32 ea; |
| int ra; |
| int rb; |
| int rc; |
| int rs; |
| int rt; |
| int sprn; |
| int dcrn; |
| enum emulation_result emulated = EMULATE_DONE; |
| int advance = 1; |
| |
| switch (get_op(inst)) { |
| case 3: /* trap */ |
| printk("trap!\n"); |
| kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM); |
| advance = 0; |
| break; |
| |
| case 19: |
| switch (get_xop(inst)) { |
| case 50: /* rfi */ |
| kvmppc_emul_rfi(vcpu); |
| advance = 0; |
| break; |
| |
| default: |
| emulated = EMULATE_FAIL; |
| break; |
| } |
| break; |
| |
| case 31: |
| switch (get_xop(inst)) { |
| |
| case 23: /* lwzx */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| break; |
| |
| case 83: /* mfmsr */ |
| rt = get_rt(inst); |
| vcpu->arch.gpr[rt] = vcpu->arch.msr; |
| break; |
| |
| case 87: /* lbzx */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| break; |
| |
| case 131: /* wrtee */ |
| rs = get_rs(inst); |
| vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE) |
| | (vcpu->arch.gpr[rs] & MSR_EE); |
| break; |
| |
| case 146: /* mtmsr */ |
| rs = get_rs(inst); |
| kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]); |
| break; |
| |
| case 151: /* stwx */ |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 4, 1); |
| break; |
| |
| case 163: /* wrteei */ |
| vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE) |
| | (inst & MSR_EE); |
| break; |
| |
| case 215: /* stbx */ |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 1, 1); |
| break; |
| |
| case 247: /* stbux */ |
| rs = get_rs(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| ea = vcpu->arch.gpr[rb]; |
| if (ra) |
| ea += vcpu->arch.gpr[ra]; |
| |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 1, 1); |
| vcpu->arch.gpr[rs] = ea; |
| break; |
| |
| case 279: /* lhzx */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| break; |
| |
| case 311: /* lhzux */ |
| rt = get_rt(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| ea = vcpu->arch.gpr[rb]; |
| if (ra) |
| ea += vcpu->arch.gpr[ra]; |
| |
| emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| vcpu->arch.gpr[ra] = ea; |
| break; |
| |
| case 323: /* mfdcr */ |
| dcrn = get_dcrn(inst); |
| rt = get_rt(inst); |
| |
| /* The guest may access CPR0 registers to determine the timebase |
| * frequency, and it must know the real host frequency because it |
| * can directly access the timebase registers. |
| * |
| * It would be possible to emulate those accesses in userspace, |
| * but userspace can really only figure out the end frequency. |
| * We could decompose that into the factors that compute it, but |
| * that's tricky math, and it's easier to just report the real |
| * CPR0 values. |
| */ |
| switch (dcrn) { |
| case DCRN_CPR0_CONFIG_ADDR: |
| vcpu->arch.gpr[rt] = vcpu->arch.cpr0_cfgaddr; |
| break; |
| case DCRN_CPR0_CONFIG_DATA: |
| local_irq_disable(); |
| mtdcr(DCRN_CPR0_CONFIG_ADDR, |
| vcpu->arch.cpr0_cfgaddr); |
| vcpu->arch.gpr[rt] = mfdcr(DCRN_CPR0_CONFIG_DATA); |
| local_irq_enable(); |
| break; |
| default: |
| run->dcr.dcrn = dcrn; |
| run->dcr.data = 0; |
| run->dcr.is_write = 0; |
| vcpu->arch.io_gpr = rt; |
| vcpu->arch.dcr_needed = 1; |
| emulated = EMULATE_DO_DCR; |
| } |
| |
| break; |
| |
| case 339: /* mfspr */ |
| sprn = get_sprn(inst); |
| rt = get_rt(inst); |
| |
| switch (sprn) { |
| case SPRN_SRR0: |
| vcpu->arch.gpr[rt] = vcpu->arch.srr0; break; |
| case SPRN_SRR1: |
| vcpu->arch.gpr[rt] = vcpu->arch.srr1; break; |
| case SPRN_MMUCR: |
| vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break; |
| case SPRN_PID: |
| vcpu->arch.gpr[rt] = vcpu->arch.pid; break; |
| case SPRN_IVPR: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break; |
| case SPRN_CCR0: |
| vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break; |
| case SPRN_CCR1: |
| vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break; |
| case SPRN_PVR: |
| vcpu->arch.gpr[rt] = vcpu->arch.pvr; break; |
| case SPRN_DEAR: |
| vcpu->arch.gpr[rt] = vcpu->arch.dear; break; |
| case SPRN_ESR: |
| vcpu->arch.gpr[rt] = vcpu->arch.esr; break; |
| case SPRN_DBCR0: |
| vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break; |
| case SPRN_DBCR1: |
| vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break; |
| |
| /* Note: mftb and TBRL/TBWL are user-accessible, so |
| * the guest can always access the real TB anyways. |
| * In fact, we probably will never see these traps. */ |
| case SPRN_TBWL: |
| vcpu->arch.gpr[rt] = mftbl(); break; |
| case SPRN_TBWU: |
| vcpu->arch.gpr[rt] = mftbu(); break; |
| |
| case SPRN_SPRG0: |
| vcpu->arch.gpr[rt] = vcpu->arch.sprg0; break; |
| case SPRN_SPRG1: |
| vcpu->arch.gpr[rt] = vcpu->arch.sprg1; break; |
| case SPRN_SPRG2: |
| vcpu->arch.gpr[rt] = vcpu->arch.sprg2; break; |
| case SPRN_SPRG3: |
| vcpu->arch.gpr[rt] = vcpu->arch.sprg3; break; |
| /* Note: SPRG4-7 are user-readable, so we don't get |
| * a trap. */ |
| |
| case SPRN_IVOR0: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[0]; break; |
| case SPRN_IVOR1: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[1]; break; |
| case SPRN_IVOR2: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[2]; break; |
| case SPRN_IVOR3: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[3]; break; |
| case SPRN_IVOR4: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[4]; break; |
| case SPRN_IVOR5: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[5]; break; |
| case SPRN_IVOR6: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[6]; break; |
| case SPRN_IVOR7: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[7]; break; |
| case SPRN_IVOR8: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[8]; break; |
| case SPRN_IVOR9: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[9]; break; |
| case SPRN_IVOR10: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[10]; break; |
| case SPRN_IVOR11: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[11]; break; |
| case SPRN_IVOR12: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[12]; break; |
| case SPRN_IVOR13: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[13]; break; |
| case SPRN_IVOR14: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[14]; break; |
| case SPRN_IVOR15: |
| vcpu->arch.gpr[rt] = vcpu->arch.ivor[15]; break; |
| |
| default: |
| printk("mfspr: unknown spr %x\n", sprn); |
| vcpu->arch.gpr[rt] = 0; |
| break; |
| } |
| break; |
| |
| case 407: /* sthx */ |
| rs = get_rs(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 2, 1); |
| break; |
| |
| case 439: /* sthux */ |
| rs = get_rs(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| ea = vcpu->arch.gpr[rb]; |
| if (ra) |
| ea += vcpu->arch.gpr[ra]; |
| |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 2, 1); |
| vcpu->arch.gpr[ra] = ea; |
| break; |
| |
| case 451: /* mtdcr */ |
| dcrn = get_dcrn(inst); |
| rs = get_rs(inst); |
| |
| /* emulate some access in kernel */ |
| switch (dcrn) { |
| case DCRN_CPR0_CONFIG_ADDR: |
| vcpu->arch.cpr0_cfgaddr = vcpu->arch.gpr[rs]; |
| break; |
| default: |
| run->dcr.dcrn = dcrn; |
| run->dcr.data = vcpu->arch.gpr[rs]; |
| run->dcr.is_write = 1; |
| vcpu->arch.dcr_needed = 1; |
| emulated = EMULATE_DO_DCR; |
| } |
| |
| break; |
| |
| case 467: /* mtspr */ |
| sprn = get_sprn(inst); |
| rs = get_rs(inst); |
| switch (sprn) { |
| case SPRN_SRR0: |
| vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SRR1: |
| vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break; |
| case SPRN_MMUCR: |
| vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break; |
| case SPRN_PID: |
| kvmppc_set_pid(vcpu, vcpu->arch.gpr[rs]); break; |
| case SPRN_CCR0: |
| vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break; |
| case SPRN_CCR1: |
| vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break; |
| case SPRN_DEAR: |
| vcpu->arch.dear = vcpu->arch.gpr[rs]; break; |
| case SPRN_ESR: |
| vcpu->arch.esr = vcpu->arch.gpr[rs]; break; |
| case SPRN_DBCR0: |
| vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break; |
| case SPRN_DBCR1: |
| vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break; |
| |
| /* XXX We need to context-switch the timebase for |
| * watchdog and FIT. */ |
| case SPRN_TBWL: break; |
| case SPRN_TBWU: break; |
| |
| case SPRN_DEC: |
| vcpu->arch.dec = vcpu->arch.gpr[rs]; |
| kvmppc_emulate_dec(vcpu); |
| break; |
| |
| case SPRN_TSR: |
| vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break; |
| |
| case SPRN_TCR: |
| vcpu->arch.tcr = vcpu->arch.gpr[rs]; |
| kvmppc_emulate_dec(vcpu); |
| break; |
| |
| case SPRN_SPRG0: |
| vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG1: |
| vcpu->arch.sprg1 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG2: |
| vcpu->arch.sprg2 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG3: |
| vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break; |
| |
| /* Note: SPRG4-7 are user-readable. These values are |
| * loaded into the real SPRGs when resuming the |
| * guest. */ |
| case SPRN_SPRG4: |
| vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG5: |
| vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG6: |
| vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break; |
| case SPRN_SPRG7: |
| vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break; |
| |
| case SPRN_IVPR: |
| vcpu->arch.ivpr = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR0: |
| vcpu->arch.ivor[0] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR1: |
| vcpu->arch.ivor[1] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR2: |
| vcpu->arch.ivor[2] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR3: |
| vcpu->arch.ivor[3] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR4: |
| vcpu->arch.ivor[4] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR5: |
| vcpu->arch.ivor[5] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR6: |
| vcpu->arch.ivor[6] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR7: |
| vcpu->arch.ivor[7] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR8: |
| vcpu->arch.ivor[8] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR9: |
| vcpu->arch.ivor[9] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR10: |
| vcpu->arch.ivor[10] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR11: |
| vcpu->arch.ivor[11] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR12: |
| vcpu->arch.ivor[12] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR13: |
| vcpu->arch.ivor[13] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR14: |
| vcpu->arch.ivor[14] = vcpu->arch.gpr[rs]; break; |
| case SPRN_IVOR15: |
| vcpu->arch.ivor[15] = vcpu->arch.gpr[rs]; break; |
| |
| default: |
| printk("mtspr: unknown spr %x\n", sprn); |
| emulated = EMULATE_FAIL; |
| break; |
| } |
| break; |
| |
| case 470: /* dcbi */ |
| /* Do nothing. The guest is performing dcbi because |
| * hardware DMA is not snooped by the dcache, but |
| * emulated DMA either goes through the dcache as |
| * normal writes, or the host kernel has handled dcache |
| * coherence. */ |
| break; |
| |
| case 534: /* lwbrx */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0); |
| break; |
| |
| case 566: /* tlbsync */ |
| break; |
| |
| case 662: /* stwbrx */ |
| rs = get_rs(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 4, 0); |
| break; |
| |
| case 978: /* tlbwe */ |
| emulated = kvmppc_emul_tlbwe(vcpu, inst); |
| break; |
| |
| case 914: { /* tlbsx */ |
| int index; |
| unsigned int as = get_mmucr_sts(vcpu); |
| unsigned int pid = get_mmucr_stid(vcpu); |
| |
| rt = get_rt(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| rc = get_rc(inst); |
| |
| ea = vcpu->arch.gpr[rb]; |
| if (ra) |
| ea += vcpu->arch.gpr[ra]; |
| |
| index = kvmppc_44x_tlb_index(vcpu, ea, pid, as); |
| if (rc) { |
| if (index < 0) |
| vcpu->arch.cr &= ~0x20000000; |
| else |
| vcpu->arch.cr |= 0x20000000; |
| } |
| vcpu->arch.gpr[rt] = index; |
| |
| } |
| break; |
| |
| case 790: /* lhbrx */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0); |
| break; |
| |
| case 918: /* sthbrx */ |
| rs = get_rs(inst); |
| ra = get_ra(inst); |
| rb = get_rb(inst); |
| |
| emulated = kvmppc_handle_store(run, vcpu, |
| vcpu->arch.gpr[rs], |
| 2, 0); |
| break; |
| |
| case 966: /* iccci */ |
| break; |
| |
| default: |
| printk("unknown: op %d xop %d\n", get_op(inst), |
| get_xop(inst)); |
| emulated = EMULATE_FAIL; |
| break; |
| } |
| break; |
| |
| case 32: /* lwz */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| break; |
| |
| case 33: /* lwzu */ |
| ra = get_ra(inst); |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| case 34: /* lbz */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| break; |
| |
| case 35: /* lbzu */ |
| ra = get_ra(inst); |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| case 36: /* stw */ |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 4, 1); |
| break; |
| |
| case 37: /* stwu */ |
| ra = get_ra(inst); |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 4, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| case 38: /* stb */ |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 1, 1); |
| break; |
| |
| case 39: /* stbu */ |
| ra = get_ra(inst); |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 1, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| case 40: /* lhz */ |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| break; |
| |
| case 41: /* lhzu */ |
| ra = get_ra(inst); |
| rt = get_rt(inst); |
| emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| case 44: /* sth */ |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 2, 1); |
| break; |
| |
| case 45: /* sthu */ |
| ra = get_ra(inst); |
| rs = get_rs(inst); |
| emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], |
| 2, 1); |
| vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; |
| break; |
| |
| default: |
| printk("unknown op %d\n", get_op(inst)); |
| emulated = EMULATE_FAIL; |
| break; |
| } |
| |
| KVMTRACE_3D(PPC_INSTR, vcpu, inst, vcpu->arch.pc, emulated, entryexit); |
| |
| if (advance) |
| vcpu->arch.pc += 4; /* Advance past emulated instruction. */ |
| |
| return emulated; |
| } |
