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Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kvm/emulate.c')
-rw-r--r--ANDROID_3.4.5/arch/powerpc/kvm/emulate.c542
1 files changed, 0 insertions, 542 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kvm/emulate.c b/ANDROID_3.4.5/arch/powerpc/kvm/emulate.c
deleted file mode 100644
index 968f4010..00000000
--- a/ANDROID_3.4.5/arch/powerpc/kvm/emulate.c
+++ /dev/null
@@ -1,542 +0,0 @@
-/*
- * 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
- * Copyright 2011 Freescale Semiconductor, Inc.
- *
- * Authors: Hollis Blanchard <hollisb@us.ibm.com>
- */
-
-#include <linux/jiffies.h>
-#include <linux/hrtimer.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kvm_host.h>
-
-#include <asm/reg.h>
-#include <asm/time.h>
-#include <asm/byteorder.h>
-#include <asm/kvm_ppc.h>
-#include <asm/disassemble.h>
-#include "timing.h"
-#include "trace.h"
-
-#define OP_TRAP 3
-#define OP_TRAP_64 2
-
-#define OP_31_XOP_LWZX 23
-#define OP_31_XOP_LBZX 87
-#define OP_31_XOP_STWX 151
-#define OP_31_XOP_STBX 215
-#define OP_31_XOP_LBZUX 119
-#define OP_31_XOP_STBUX 247
-#define OP_31_XOP_LHZX 279
-#define OP_31_XOP_LHZUX 311
-#define OP_31_XOP_MFSPR 339
-#define OP_31_XOP_LHAX 343
-#define OP_31_XOP_STHX 407
-#define OP_31_XOP_STHUX 439
-#define OP_31_XOP_MTSPR 467
-#define OP_31_XOP_DCBI 470
-#define OP_31_XOP_LWBRX 534
-#define OP_31_XOP_TLBSYNC 566
-#define OP_31_XOP_STWBRX 662
-#define OP_31_XOP_LHBRX 790
-#define OP_31_XOP_STHBRX 918
-
-#define OP_LWZ 32
-#define OP_LWZU 33
-#define OP_LBZ 34
-#define OP_LBZU 35
-#define OP_STW 36
-#define OP_STWU 37
-#define OP_STB 38
-#define OP_STBU 39
-#define OP_LHZ 40
-#define OP_LHZU 41
-#define OP_LHA 42
-#define OP_LHAU 43
-#define OP_STH 44
-#define OP_STHU 45
-
-void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
-{
- unsigned long dec_nsec;
- unsigned long long dec_time;
-
- pr_debug("mtDEC: %x\n", vcpu->arch.dec);
- hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
-
-#ifdef CONFIG_PPC_BOOK3S
- /* mtdec lowers the interrupt line when positive. */
- kvmppc_core_dequeue_dec(vcpu);
-
- /* POWER4+ triggers a dec interrupt if the value is < 0 */
- if (vcpu->arch.dec & 0x80000000) {
- kvmppc_core_queue_dec(vcpu);
- return;
- }
-#endif
-
-#ifdef CONFIG_BOOKE
- /* On BOOKE, DEC = 0 is as good as decrementer not enabled */
- if (vcpu->arch.dec == 0)
- return;
-#endif
-
- /*
- * 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.
- */
-
- dec_time = vcpu->arch.dec;
- dec_time *= 1000;
- do_div(dec_time, tb_ticks_per_usec);
- dec_nsec = do_div(dec_time, NSEC_PER_SEC);
- hrtimer_start(&vcpu->arch.dec_timer,
- ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL);
- vcpu->arch.dec_jiffies = get_tb();
-}
-
-u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb)
-{
- u64 jd = tb - vcpu->arch.dec_jiffies;
-
-#ifdef CONFIG_BOOKE
- if (vcpu->arch.dec < jd)
- return 0;
-#endif
-
- return vcpu->arch.dec - jd;
-}
-
-/* XXX to do:
- * lhax
- * lhaux
- * lswx
- * lswi
- * stswx
- * stswi
- * lha
- * lhau
- * lmw
- * stmw
- *
- * XXX is_bigendian should depend on MMU mapping or MSR[LE]
- */
-/* XXX Should probably auto-generate instruction decoding for a particular core
- * from opcode tables in the future. */
-int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
-{
- u32 inst = kvmppc_get_last_inst(vcpu);
- u32 ea;
- int ra;
- int rb;
- int rs;
- int rt;
- int sprn;
- enum emulation_result emulated = EMULATE_DONE;
- int advance = 1;
-
- /* this default type might be overwritten by subcategories */
- kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS);
-
- pr_debug("Emulating opcode %d / %d\n", get_op(inst), get_xop(inst));
-
- switch (get_op(inst)) {
- case OP_TRAP:
-#ifdef CONFIG_PPC_BOOK3S
- case OP_TRAP_64:
- kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
-#else
- kvmppc_core_queue_program(vcpu,
- vcpu->arch.shared->esr | ESR_PTR);
-#endif
- advance = 0;
- break;
-
- case 31:
- switch (get_xop(inst)) {
-
- case OP_31_XOP_LWZX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
- break;
-
- case OP_31_XOP_LBZX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
- break;
-
- case OP_31_XOP_LBZUX:
- rt = get_rt(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- ea = kvmppc_get_gpr(vcpu, rb);
- if (ra)
- ea += kvmppc_get_gpr(vcpu, ra);
-
- emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
- kvmppc_set_gpr(vcpu, ra, ea);
- break;
-
- case OP_31_XOP_STWX:
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 4, 1);
- break;
-
- case OP_31_XOP_STBX:
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 1, 1);
- break;
-
- case OP_31_XOP_STBUX:
- rs = get_rs(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- ea = kvmppc_get_gpr(vcpu, rb);
- if (ra)
- ea += kvmppc_get_gpr(vcpu, ra);
-
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 1, 1);
- kvmppc_set_gpr(vcpu, rs, ea);
- break;
-
- case OP_31_XOP_LHAX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1);
- break;
-
- case OP_31_XOP_LHZX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- break;
-
- case OP_31_XOP_LHZUX:
- rt = get_rt(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- ea = kvmppc_get_gpr(vcpu, rb);
- if (ra)
- ea += kvmppc_get_gpr(vcpu, ra);
-
- emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- kvmppc_set_gpr(vcpu, ra, ea);
- break;
-
- case OP_31_XOP_MFSPR:
- sprn = get_sprn(inst);
- rt = get_rt(inst);
-
- switch (sprn) {
- case SPRN_SRR0:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->srr0);
- break;
- case SPRN_SRR1:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->srr1);
- break;
- case SPRN_PVR:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.pvr); break;
- case SPRN_PIR:
- kvmppc_set_gpr(vcpu, rt, vcpu->vcpu_id); break;
- case SPRN_MSSSR0:
- kvmppc_set_gpr(vcpu, rt, 0); 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:
- kvmppc_set_gpr(vcpu, rt, get_tb() >> 32); break;
- case SPRN_TBWU:
- kvmppc_set_gpr(vcpu, rt, get_tb()); break;
-
- case SPRN_SPRG0:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg0);
- break;
- case SPRN_SPRG1:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg1);
- break;
- case SPRN_SPRG2:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg2);
- break;
- case SPRN_SPRG3:
- kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->sprg3);
- break;
- /* Note: SPRG4-7 are user-readable, so we don't get
- * a trap. */
-
- case SPRN_DEC:
- {
- kvmppc_set_gpr(vcpu, rt,
- kvmppc_get_dec(vcpu, get_tb()));
- break;
- }
- default:
- emulated = kvmppc_core_emulate_mfspr(vcpu, sprn, rt);
- if (emulated == EMULATE_FAIL) {
- printk("mfspr: unknown spr %x\n", sprn);
- kvmppc_set_gpr(vcpu, rt, 0);
- }
- break;
- }
- kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS);
- break;
-
- case OP_31_XOP_STHX:
- rs = get_rs(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 2, 1);
- break;
-
- case OP_31_XOP_STHUX:
- rs = get_rs(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- ea = kvmppc_get_gpr(vcpu, rb);
- if (ra)
- ea += kvmppc_get_gpr(vcpu, ra);
-
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 2, 1);
- kvmppc_set_gpr(vcpu, ra, ea);
- break;
-
- case OP_31_XOP_MTSPR:
- sprn = get_sprn(inst);
- rs = get_rs(inst);
- switch (sprn) {
- case SPRN_SRR0:
- vcpu->arch.shared->srr0 = kvmppc_get_gpr(vcpu, rs);
- break;
- case SPRN_SRR1:
- vcpu->arch.shared->srr1 = kvmppc_get_gpr(vcpu, rs);
- break;
-
- /* XXX We need to context-switch the timebase for
- * watchdog and FIT. */
- case SPRN_TBWL: break;
- case SPRN_TBWU: break;
-
- case SPRN_MSSSR0: break;
-
- case SPRN_DEC:
- vcpu->arch.dec = kvmppc_get_gpr(vcpu, rs);
- kvmppc_emulate_dec(vcpu);
- break;
-
- case SPRN_SPRG0:
- vcpu->arch.shared->sprg0 = kvmppc_get_gpr(vcpu, rs);
- break;
- case SPRN_SPRG1:
- vcpu->arch.shared->sprg1 = kvmppc_get_gpr(vcpu, rs);
- break;
- case SPRN_SPRG2:
- vcpu->arch.shared->sprg2 = kvmppc_get_gpr(vcpu, rs);
- break;
- case SPRN_SPRG3:
- vcpu->arch.shared->sprg3 = kvmppc_get_gpr(vcpu, rs);
- break;
-
- default:
- emulated = kvmppc_core_emulate_mtspr(vcpu, sprn, rs);
- if (emulated == EMULATE_FAIL)
- printk("mtspr: unknown spr %x\n", sprn);
- break;
- }
- kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS);
- break;
-
- case OP_31_XOP_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 OP_31_XOP_LWBRX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0);
- break;
-
- case OP_31_XOP_TLBSYNC:
- break;
-
- case OP_31_XOP_STWBRX:
- rs = get_rs(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 4, 0);
- break;
-
- case OP_31_XOP_LHBRX:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0);
- break;
-
- case OP_31_XOP_STHBRX:
- rs = get_rs(inst);
- ra = get_ra(inst);
- rb = get_rb(inst);
-
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 2, 0);
- break;
-
- default:
- /* Attempt core-specific emulation below. */
- emulated = EMULATE_FAIL;
- }
- break;
-
- case OP_LWZ:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
- break;
-
- case OP_LWZU:
- ra = get_ra(inst);
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_LBZ:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
- break;
-
- case OP_LBZU:
- ra = get_ra(inst);
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_STW:
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 4, 1);
- break;
-
- case OP_STWU:
- ra = get_ra(inst);
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 4, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_STB:
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 1, 1);
- break;
-
- case OP_STBU:
- ra = get_ra(inst);
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 1, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_LHZ:
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- break;
-
- case OP_LHZU:
- ra = get_ra(inst);
- rt = get_rt(inst);
- emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_LHA:
- rt = get_rt(inst);
- emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1);
- break;
-
- case OP_LHAU:
- ra = get_ra(inst);
- rt = get_rt(inst);
- emulated = kvmppc_handle_loads(run, vcpu, rt, 2, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- case OP_STH:
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 2, 1);
- break;
-
- case OP_STHU:
- ra = get_ra(inst);
- rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu,
- kvmppc_get_gpr(vcpu, rs),
- 2, 1);
- kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
- break;
-
- default:
- emulated = EMULATE_FAIL;
- }
-
- if (emulated == EMULATE_FAIL) {
- emulated = kvmppc_core_emulate_op(run, vcpu, inst, &advance);
- if (emulated == EMULATE_AGAIN) {
- advance = 0;
- } else if (emulated == EMULATE_FAIL) {
- advance = 0;
- printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
- "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
- kvmppc_core_queue_program(vcpu, 0);
- }
- }
-
- trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated);
-
- /* Advance past emulated instruction. */
- if (advance)
- kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4);
-
- return emulated;
-}
generated by cgit (git 2.34.1) at 2025-01-11 06:51:54 +0000