MCL/sf/adapt/qemu: comparison symbian-qemu-0.9.1-12/qemu-symbian-svp/target-ppc/helper.c

equal deleted inserted replaced

-:ffa851df0825
+:2fb8b9db1c86
+/*
+*  PowerPC emulation helpers for qemu.
+*
+*  Copyright (c) 2003-2007 Jocelyn Mayer
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 2 of the License, or (at your option) any later version.
+*
+* This library 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
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <assert.h>
+#include "cpu.h"
+#include "exec-all.h"
+#include "helper_regs.h"
+#include "qemu-common.h"
+#include "kvm.h"
+//#define DEBUG_MMU
+//#define DEBUG_BATS
+//#define DEBUG_SLB
+//#define DEBUG_SOFTWARE_TLB
+//#define DUMP_PAGE_TABLES
+//#define DEBUG_EXCEPTIONS
+//#define FLUSH_ALL_TLBS
+/*****************************************************************************/
+/* PowerPC MMU emulation */
+#if defined(CONFIG_USER_ONLY)
+int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
+int mmu_idx, int is_softmmu)
+{
+int exception, error_code;
+if (rw == 2) {
+exception = POWERPC_EXCP_ISI;
+error_code = 0x40000000;
+} else {
+exception = POWERPC_EXCP_DSI;
+error_code = 0x40000000;
+if (rw)
+error_code |= 0x02000000;
+env->spr[SPR_DAR] = address;
+env->spr[SPR_DSISR] = error_code;
+}
+env->exception_index = exception;
+env->error_code = error_code;
+return 1;
+}
+target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
+{
+return addr;
+}
+#else
+/* Common routines used by software and hardware TLBs emulation */
+static always_inline int pte_is_valid (target_ulong pte0)
+{
+return pte0 & 0x80000000 ? 1 : 0;
+}
+static always_inline void pte_invalidate (target_ulong *pte0)
+{
+*pte0 &= ~0x80000000;
+}
+#if defined(TARGET_PPC64)
+static always_inline int pte64_is_valid (target_ulong pte0)
+{
+return pte0 & 0x0000000000000001ULL ? 1 : 0;
+}
+static always_inline void pte64_invalidate (target_ulong *pte0)
+{
+*pte0 &= ~0x0000000000000001ULL;
+}
+#endif
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+#if defined(TARGET_PPC64)
+#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
+#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
+#endif
+static always_inline int pp_check (int key, int pp, int nx)
+{
+int access;
+/* Compute access rights */
+/* When pp is 3/7, the result is undefined. Set it to noaccess */
+access = 0;
+if (key == 0) {
+switch (pp) {
+case 0x0:
+case 0x1:
+case 0x2:
+access |= PAGE_WRITE;
+/* No break here */
+case 0x3:
+case 0x6:
+access |= PAGE_READ;
+break;
+}
+} else {
+switch (pp) {
+case 0x0:
+case 0x6:
+access = 0;
+break;
+case 0x1:
+case 0x3:
+access = PAGE_READ;
+break;
+case 0x2:
+access = PAGE_READ | PAGE_WRITE;
+break;
+}
+}
+if (nx == 0)
+access |= PAGE_EXEC;
+return access;
+}
+static always_inline int check_prot (int prot, int rw, int access_type)
+{
+int ret;
+if (access_type == ACCESS_CODE) {
+if (prot & PAGE_EXEC)
+ret = 0;
+else
+ret = -2;
+} else if (rw) {
+if (prot & PAGE_WRITE)
+ret = 0;
+else
+ret = -2;
+} else {
+if (prot & PAGE_READ)
+ret = 0;
+else
+ret = -2;
+}
+return ret;
+}
+static always_inline int _pte_check (mmu_ctx_t *ctx, int is_64b,
+target_ulong pte0, target_ulong pte1,
+int h, int rw, int type)
+{
+target_ulong ptem, mmask;
+int access, ret, pteh, ptev, pp;
+access = 0;
+ret = -1;
+/* Check validity and table match */
+#if defined(TARGET_PPC64)
+if (is_64b) {
+ptev = pte64_is_valid(pte0);
+pteh = (pte0 >> 1) & 1;
+} else
+#endif
+{
+ptev = pte_is_valid(pte0);
+pteh = (pte0 >> 6) & 1;
+}
+if (ptev && h == pteh) {
+/* Check vsid & api */
+#if defined(TARGET_PPC64)
+if (is_64b) {
+ptem = pte0 & PTE64_PTEM_MASK;
+mmask = PTE64_CHECK_MASK;
+pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
+ctx->nx |= (pte1 >> 2) & 1; /* No execute bit */
+ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit    */
+} else
+#endif
+{
+ptem = pte0 & PTE_PTEM_MASK;
+mmask = PTE_CHECK_MASK;
+pp = pte1 & 0x00000003;
+}
+if (ptem == ctx->ptem) {
+if (ctx->raddr != (target_phys_addr_t)-1ULL) {
+/* all matches should have equal RPN, WIMG & PP */
+if ((ctx->raddr & mmask) != (pte1 & mmask)) {
+if (loglevel != 0)
+fprintf(logfile, "Bad RPN/WIMG/PP\n");
+return -3;
+}
+}
+/* Compute access rights */
+access = pp_check(ctx->key, pp, ctx->nx);
+/* Keep the matching PTE informations */
+ctx->raddr = pte1;
+ctx->prot = access;
+ret = check_prot(ctx->prot, rw, type);
+if (ret == 0) {
+/* Access granted */
+#if defined (DEBUG_MMU)
+if (loglevel != 0)
+fprintf(logfile, "PTE access granted !\n");
+#endif
+} else {
+/* Access right violation */
+#if defined (DEBUG_MMU)
+if (loglevel != 0)
+fprintf(logfile, "PTE access rejected\n");
+#endif
+}
+}
+}
+return ret;
+}
+static always_inline int pte32_check (mmu_ctx_t *ctx,
+target_ulong pte0, target_ulong pte1,
+int h, int rw, int type)
+{
+return _pte_check(ctx, 0, pte0, pte1, h, rw, type);
+}
+#if defined(TARGET_PPC64)
+static always_inline int pte64_check (mmu_ctx_t *ctx,
+target_ulong pte0, target_ulong pte1,
+int h, int rw, int type)
+{
+return _pte_check(ctx, 1, pte0, pte1, h, rw, type);
+}
+#endif
+static always_inline int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p,
+int ret, int rw)
+{
+int store = 0;
+/* Update page flags */
+if (!(*pte1p & 0x00000100)) {
+/* Update accessed flag */
+*pte1p |= 0x00000100;
+store = 1;
+}
+if (!(*pte1p & 0x00000080)) {
+if (rw == 1 && ret == 0) {
+/* Update changed flag */
+*pte1p |= 0x00000080;
+store = 1;
+} else {
+/* Force page fault for first write access */
+ctx->prot &= ~PAGE_WRITE;
+}
+}
+return store;
+}
+/* Software driven TLB helpers */
+static always_inline int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr,
+int way, int is_code)
+{
+int nr;
+/* Select TLB num in a way from address */
+nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
+/* Select TLB way */
+nr += env->tlb_per_way * way;
+/* 6xx have separate TLBs for instructions and data */
+if (is_code && env->id_tlbs == 1)
+nr += env->nb_tlb;
+return nr;
+}
+static always_inline void ppc6xx_tlb_invalidate_all (CPUState *env)
+{
+ppc6xx_tlb_t *tlb;
+int nr, max;
+#if defined (DEBUG_SOFTWARE_TLB) && 0
+if (loglevel != 0) {
+fprintf(logfile, "Invalidate all TLBs\n");
+}
+#endif
+/* Invalidate all defined software TLB */
+max = env->nb_tlb;
+if (env->id_tlbs == 1)
+max *= 2;
+for (nr = 0; nr < max; nr++) {
+tlb = &env->tlb[nr].tlb6;
+pte_invalidate(&tlb->pte0);
+}
+tlb_flush(env, 1);
+}
+static always_inline void __ppc6xx_tlb_invalidate_virt (CPUState *env,
+target_ulong eaddr,
+int is_code,
+int match_epn)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ppc6xx_tlb_t *tlb;
+int way, nr;
+/* Invalidate ITLB + DTLB, all ways */
+for (way = 0; way < env->nb_ways; way++) {
+nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
+tlb = &env->tlb[nr].tlb6;
+if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "TLB invalidate %d/%d " ADDRX "\n",
+nr, env->nb_tlb, eaddr);
+}
+#endif
+pte_invalidate(&tlb->pte0);
+tlb_flush_page(env, tlb->EPN);
+}
+}
+#else
+/* XXX: PowerPC specification say this is valid as well */
+ppc6xx_tlb_invalidate_all(env);
+#endif
+}
+static always_inline void ppc6xx_tlb_invalidate_virt (CPUState *env,
+target_ulong eaddr,
+int is_code)
+{
+__ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
+}
+void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
+target_ulong pte0, target_ulong pte1)
+{
+ppc6xx_tlb_t *tlb;
+int nr;
+nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
+tlb = &env->tlb[nr].tlb6;
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX
+" PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1);
+}
+#endif
+/* Invalidate any pending reference in Qemu for this virtual address */
+__ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
+tlb->pte0 = pte0;
+tlb->pte1 = pte1;
+tlb->EPN = EPN;
+/* Store last way for LRU mechanism */
+env->last_way = way;
+}
+static always_inline int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx,
+target_ulong eaddr, int rw,
+int access_type)
+{
+ppc6xx_tlb_t *tlb;
+int nr, best, way;
+int ret;
+best = -1;
+ret = -1; /* No TLB found */
+for (way = 0; way < env->nb_ways; way++) {
+nr = ppc6xx_tlb_getnum(env, eaddr, way,
+access_type == ACCESS_CODE ? 1 : 0);
+tlb = &env->tlb[nr].tlb6;
+/* This test "emulates" the PTE index match for hardware TLBs */
+if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "TLB %d/%d %s [" ADDRX " " ADDRX
+"] <> " ADDRX "\n",
+nr, env->nb_tlb,
+pte_is_valid(tlb->pte0) ? "valid" : "inval",
+tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
+}
+#endif
+continue;
+}
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX
+" %c %c\n",
+nr, env->nb_tlb,
+pte_is_valid(tlb->pte0) ? "valid" : "inval",
+tlb->EPN, eaddr, tlb->pte1,
+rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
+}
+#endif
+switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
+case -3:
+/* TLB inconsistency */
+return -1;
+case -2:
+/* Access violation */
+ret = -2;
+best = nr;
+break;
+case -1:
+default:
+/* No match */
+break;
+case 0:
+/* access granted */
+/* XXX: we should go on looping to check all TLBs consistency
+*      but we can speed-up the whole thing as the
+*      result would be undefined if TLBs are not consistent.
+*/
+ret = 0;
+best = nr;
+goto done;
+}
+}
+if (best != -1) {
+done:
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "found TLB at addr " PADDRX " prot=%01x ret=%d\n",
+ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
+}
+#endif
+/* Update page flags */
+pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw);
+}
+return ret;
+}
+/* Perform BAT hit & translation */
+static always_inline void bat_size_prot (CPUState *env, target_ulong *blp,
+int *validp, int *protp,
+target_ulong *BATu, target_ulong *BATl)
+{
+target_ulong bl;
+int pp, valid, prot;
+bl = (*BATu & 0x00001FFC) << 15;
+valid = 0;
+prot = 0;
+if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
+((msr_pr != 0) && (*BATu & 0x00000001))) {
+valid = 1;
+pp = *BATl & 0x00000003;
+if (pp != 0) {
+prot = PAGE_READ | PAGE_EXEC;
+if (pp == 0x2)
+prot |= PAGE_WRITE;
+}
+}
+*blp = bl;
+*validp = valid;
+*protp = prot;
+}
+static always_inline void bat_601_size_prot (CPUState *env,target_ulong *blp,
+int *validp, int *protp,
+target_ulong *BATu,
+target_ulong *BATl)
+{
+target_ulong bl;
+int key, pp, valid, prot;
+bl = (*BATl & 0x0000003F) << 17;
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "b %02x ==> bl " ADDRX " msk " ADDRX "\n",
+(uint8_t)(*BATl & 0x0000003F), bl, ~bl);
+}
+#endif
+prot = 0;
+valid = (*BATl >> 6) & 1;
+if (valid) {
+pp = *BATu & 0x00000003;
+if (msr_pr == 0)
+key = (*BATu >> 3) & 1;
+else
+key = (*BATu >> 2) & 1;
+prot = pp_check(key, pp, 0);
+}
+*blp = bl;
+*validp = valid;
+*protp = prot;
+}
+static always_inline int get_bat (CPUState *env, mmu_ctx_t *ctx,
+target_ulong virtual, int rw, int type)
+{
+target_ulong *BATlt, *BATut, *BATu, *BATl;
+target_ulong base, BEPIl, BEPIu, bl;
+int i, valid, prot;
+int ret = -1;
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "%s: %cBAT v " ADDRX "\n", __func__,
+type == ACCESS_CODE ? 'I' : 'D', virtual);
+}
+#endif
+switch (type) {
+case ACCESS_CODE:
+BATlt = env->IBAT[1];
+BATut = env->IBAT[0];
+break;
+default:
+BATlt = env->DBAT[1];
+BATut = env->DBAT[0];
+break;
+}
+base = virtual & 0xFFFC0000;
+for (i = 0; i < env->nb_BATs; i++) {
+BATu = &BATut[i];
+BATl = &BATlt[i];
+BEPIu = *BATu & 0xF0000000;
+BEPIl = *BATu & 0x0FFE0000;
+if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
+bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
+} else {
+bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
+}
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "%s: %cBAT%d v " ADDRX " BATu " ADDRX
+" BATl " ADDRX "\n", __func__,
+type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
+}
+#endif
+if ((virtual & 0xF0000000) == BEPIu &&
+((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
+/* BAT matches */
+if (valid != 0) {
+/* Get physical address */
+ctx->raddr = (*BATl & 0xF0000000) |
+((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
+(virtual & 0x0001F000);
+/* Compute access rights */
+ctx->prot = prot;
+ret = check_prot(ctx->prot, rw, type);
+#if defined (DEBUG_BATS)
+if (ret == 0 && loglevel != 0) {
+fprintf(logfile, "BAT %d match: r " PADDRX " prot=%c%c\n",
+i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
+ctx->prot & PAGE_WRITE ? 'W' : '-');
+}
+#endif
+break;
+}
+}
+}
+if (ret < 0) {
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "no BAT match for " ADDRX ":\n", virtual);
+for (i = 0; i < 4; i++) {
+BATu = &BATut[i];
+BATl = &BATlt[i];
+BEPIu = *BATu & 0xF0000000;
+BEPIl = *BATu & 0x0FFE0000;
+bl = (*BATu & 0x00001FFC) << 15;
+fprintf(logfile, "%s: %cBAT%d v " ADDRX " BATu " ADDRX
+" BATl " ADDRX " \n\t" ADDRX " " ADDRX " " ADDRX "\n",
+__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
+*BATu, *BATl, BEPIu, BEPIl, bl);
+}
+}
+#endif
+}
+/* No hit */
+return ret;
+}
+/* PTE table lookup */
+static always_inline int _find_pte (mmu_ctx_t *ctx, int is_64b, int h,
+int rw, int type)
+{
+target_ulong base, pte0, pte1;
+int i, good = -1;
+int ret, r;
+ret = -1; /* No entry found */
+base = ctx->pg_addr[h];
+for (i = 0; i < 8; i++) {
+#if defined(TARGET_PPC64)
+if (is_64b) {
+pte0 = ldq_phys(base + (i * 16));
+pte1 =  ldq_phys(base + (i * 16) + 8);
+r = pte64_check(ctx, pte0, pte1, h, rw, type);
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "Load pte from " ADDRX " => " ADDRX " " ADDRX
+" %d %d %d " ADDRX "\n",
+base + (i * 16), pte0, pte1,
+(int)(pte0 & 1), h, (int)((pte0 >> 1) & 1),
+ctx->ptem);
+}
+#endif
+} else
+#endif
+{
+pte0 = ldl_phys(base + (i * 8));
+pte1 =  ldl_phys(base + (i * 8) + 4);
+r = pte32_check(ctx, pte0, pte1, h, rw, type);
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "Load pte from " ADDRX " => " ADDRX " " ADDRX
+" %d %d %d " ADDRX "\n",
+base + (i * 8), pte0, pte1,
+(int)(pte0 >> 31), h, (int)((pte0 >> 6) & 1),
+ctx->ptem);
+}
+#endif
+}
+switch (r) {
+case -3:
+/* PTE inconsistency */
+return -1;
+case -2:
+/* Access violation */
+ret = -2;
+good = i;
+break;
+case -1:
+default:
+/* No PTE match */
+break;
+case 0:
+/* access granted */
+/* XXX: we should go on looping to check all PTEs consistency
+*      but if we can speed-up the whole thing as the
+*      result would be undefined if PTEs are not consistent.
+*/
+ret = 0;
+good = i;
+goto done;
+}
+}
+if (good != -1) {
+done:
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "found PTE at addr " PADDRX " prot=%01x ret=%d\n",
+ctx->raddr, ctx->prot, ret);
+}
+#endif
+/* Update page flags */
+pte1 = ctx->raddr;
+if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
+#if defined(TARGET_PPC64)
+if (is_64b) {
+stq_phys_notdirty(base + (good * 16) + 8, pte1);
+} else
+#endif
+{
+stl_phys_notdirty(base + (good * 8) + 4, pte1);
+}
+}
+}
+return ret;
+}
+static always_inline int find_pte32 (mmu_ctx_t *ctx, int h, int rw, int type)
+{
+return _find_pte(ctx, 0, h, rw, type);
+}
+#if defined(TARGET_PPC64)
+static always_inline int find_pte64 (mmu_ctx_t *ctx, int h, int rw, int type)
+{
+return _find_pte(ctx, 1, h, rw, type);
+}
+#endif
+static always_inline int find_pte (CPUState *env, mmu_ctx_t *ctx,
+int h, int rw, int type)
+{
+#if defined(TARGET_PPC64)
+if (env->mmu_model & POWERPC_MMU_64)
+return find_pte64(ctx, h, rw, type);
+#endif
+return find_pte32(ctx, h, rw, type);
+}
+#if defined(TARGET_PPC64)
+static always_inline int slb_is_valid (uint64_t slb64)
+{
+return slb64 & 0x0000000008000000ULL ? 1 : 0;
+}
+static always_inline void slb_invalidate (uint64_t *slb64)
+{
+*slb64 &= ~0x0000000008000000ULL;
+}
+static always_inline int slb_lookup (CPUPPCState *env, target_ulong eaddr,
+target_ulong *vsid,
+target_ulong *page_mask, int *attr)
+{
+target_phys_addr_t sr_base;
+target_ulong mask;
+uint64_t tmp64;
+uint32_t tmp;
+int n, ret;
+ret = -5;
+sr_base = env->spr[SPR_ASR];
+#if defined(DEBUG_SLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: eaddr " ADDRX " base " PADDRX "\n",
+__func__, eaddr, sr_base);
+}
+#endif
+mask = 0x0000000000000000ULL; /* Avoid gcc warning */
+for (n = 0; n < env->slb_nr; n++) {
+tmp64 = ldq_phys(sr_base);
+tmp = ldl_phys(sr_base + 8);
+#if defined(DEBUG_SLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: seg %d " PADDRX " %016" PRIx64 " %08"
+PRIx32 "\n", __func__, n, sr_base, tmp64, tmp);
+}
+#endif
+if (slb_is_valid(tmp64)) {
+/* SLB entry is valid */
+switch (tmp64 & 0x0000000006000000ULL) {
+case 0x0000000000000000ULL:
+/* 256 MB segment */
+mask = 0xFFFFFFFFF0000000ULL;
+break;
+case 0x0000000002000000ULL:
+/* 1 TB segment */
+mask = 0xFFFF000000000000ULL;
+break;
+case 0x0000000004000000ULL:
+case 0x0000000006000000ULL:
+/* Reserved => segment is invalid */
+continue;
+}
+if ((eaddr & mask) == (tmp64 & mask)) {
+/* SLB match */
+*vsid = ((tmp64 << 24) | (tmp >> 8)) & 0x0003FFFFFFFFFFFFULL;
+*page_mask = ~mask;
+*attr = tmp & 0xFF;
+ret = n;
+break;
+}
+}
+sr_base += 12;
+}
+return ret;
+}
+void ppc_slb_invalidate_all (CPUPPCState *env)
+{
+target_phys_addr_t sr_base;
+uint64_t tmp64;
+int n, do_invalidate;
+do_invalidate = 0;
+sr_base = env->spr[SPR_ASR];
+/* XXX: Warning: slbia never invalidates the first segment */
+for (n = 1; n < env->slb_nr; n++) {
+tmp64 = ldq_phys(sr_base);
+if (slb_is_valid(tmp64)) {
+slb_invalidate(&tmp64);
+stq_phys(sr_base, tmp64);
+/* XXX: given the fact that segment size is 256 MB or 1TB,
+*      and we still don't have a tlb_flush_mask(env, n, mask)
+*      in Qemu, we just invalidate all TLBs
+*/
+do_invalidate = 1;
+}
+sr_base += 12;
+}
+if (do_invalidate)
+tlb_flush(env, 1);
+}
+void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
+{
+target_phys_addr_t sr_base;
+target_ulong vsid, page_mask;
+uint64_t tmp64;
+int attr;
+int n;
+n = slb_lookup(env, T0, &vsid, &page_mask, &attr);
+if (n >= 0) {
+sr_base = env->spr[SPR_ASR];
+sr_base += 12 * n;
+tmp64 = ldq_phys(sr_base);
+if (slb_is_valid(tmp64)) {
+slb_invalidate(&tmp64);
+stq_phys(sr_base, tmp64);
+/* XXX: given the fact that segment size is 256 MB or 1TB,
+*      and we still don't have a tlb_flush_mask(env, n, mask)
+*      in Qemu, we just invalidate all TLBs
+*/
+tlb_flush(env, 1);
+}
+}
+}
+target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
+{
+target_phys_addr_t sr_base;
+target_ulong rt;
+uint64_t tmp64;
+uint32_t tmp;
+sr_base = env->spr[SPR_ASR];
+sr_base += 12 * slb_nr;
+tmp64 = ldq_phys(sr_base);
+tmp = ldl_phys(sr_base + 8);
+if (tmp64 & 0x0000000008000000ULL) {
+/* SLB entry is valid */
+/* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
+rt = tmp >> 8;             /* 65:88 => 40:63 */
+rt |= (tmp64 & 0x7) << 24; /* 62:64 => 37:39 */
+/* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
+rt |= ((tmp >> 4) & 0xF) << 27;
+} else {
+rt = 0;
+}
+#if defined(DEBUG_SLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: " PADDRX " %016" PRIx64 " %08" PRIx32 " => %d "
+ADDRX "\n", __func__, sr_base, tmp64, tmp, slb_nr, rt);
+}
+#endif
+return rt;
+}
+void ppc_store_slb (CPUPPCState *env, int slb_nr, target_ulong rs)
+{
+target_phys_addr_t sr_base;
+uint64_t tmp64;
+uint32_t tmp;
+sr_base = env->spr[SPR_ASR];
+sr_base += 12 * slb_nr;
+/* Copy Rs bits 37:63 to SLB 62:88 */
+tmp = rs << 8;
+tmp64 = (rs >> 24) & 0x7;
+/* Copy Rs bits 33:36 to SLB 89:92 */
+tmp |= ((rs >> 27) & 0xF) << 4;
+/* Set the valid bit */
+tmp64 |= 1 << 27;
+/* Set ESID */
+tmp64 |= (uint32_t)slb_nr << 28;
+#if defined(DEBUG_SLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: %d " ADDRX " => " PADDRX " %016" PRIx64
+" %08" PRIx32 "\n", __func__,
+slb_nr, rs, sr_base, tmp64, tmp);
+}
+#endif
+/* Write SLB entry to memory */
+stq_phys(sr_base, tmp64);
+stl_phys(sr_base + 8, tmp);
+}
+#endif /* defined(TARGET_PPC64) */
+/* Perform segment based translation */
+static always_inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
+int sdr_sh,
+target_phys_addr_t hash,
+target_phys_addr_t mask)
+{
+return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask);
+}
+static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx,
+target_ulong eaddr, int rw, int type)
+{
+target_phys_addr_t sdr, hash, mask, sdr_mask, htab_mask;
+target_ulong sr, vsid, vsid_mask, pgidx, page_mask;
+#if defined(TARGET_PPC64)
+int attr;
+#endif
+int ds, vsid_sh, sdr_sh, pr;
+int ret, ret2;
+pr = msr_pr;
+#if defined(TARGET_PPC64)
+if (env->mmu_model & POWERPC_MMU_64) {
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "Check SLBs\n");
+}
+#endif
+ret = slb_lookup(env, eaddr, &vsid, &page_mask, &attr);
+if (ret < 0)
+return ret;
+ctx->key = ((attr & 0x40) && (pr != 0)) ||
+((attr & 0x80) && (pr == 0)) ? 1 : 0;
+ds = 0;
+ctx->nx = attr & 0x20 ? 1 : 0;
+vsid_mask = 0x00003FFFFFFFFF80ULL;
+vsid_sh = 7;
+sdr_sh = 18;
+sdr_mask = 0x3FF80;
+} else
+#endif /* defined(TARGET_PPC64) */
+{
+sr = env->sr[eaddr >> 28];
+page_mask = 0x0FFFFFFF;
+ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
+((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
+ds = sr & 0x80000000 ? 1 : 0;
+ctx->nx = sr & 0x10000000 ? 1 : 0;
+vsid = sr & 0x00FFFFFF;
+vsid_mask = 0x01FFFFC0;
+vsid_sh = 6;
+sdr_sh = 16;
+sdr_mask = 0xFFC0;
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "Check segment v=" ADDRX " %d " ADDRX
+" nip=" ADDRX " lr=" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n",
+eaddr, (int)(eaddr >> 28), sr, env->nip,
+env->lr, (int)msr_ir, (int)msr_dr, pr != 0 ? 1 : 0,
+rw, type);
+}
+#endif
+}
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "pte segment: key=%d ds %d nx %d vsid " ADDRX "\n",
+ctx->key, ds, ctx->nx, vsid);
+}
+#endif
+ret = -1;
+if (!ds) {
+/* Check if instruction fetch is allowed, if needed */
+if (type != ACCESS_CODE || ctx->nx == 0) {
+/* Page address translation */
+/* Primary table address */
+sdr = env->sdr1;
+pgidx = (eaddr & page_mask) >> TARGET_PAGE_BITS;
+#if defined(TARGET_PPC64)
+if (env->mmu_model & POWERPC_MMU_64) {
+htab_mask = 0x0FFFFFFF >> (28 - (sdr & 0x1F));
+/* XXX: this is false for 1 TB segments */
+hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
+} else
+#endif
+{
+htab_mask = sdr & 0x000001FF;
+hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
+}
+mask = (htab_mask << sdr_sh) | sdr_mask;
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "sdr " PADDRX " sh %d hash " PADDRX
+" mask " PADDRX " " ADDRX "\n",
+sdr, sdr_sh, hash, mask, page_mask);
+}
+#endif
+ctx->pg_addr[0] = get_pgaddr(sdr, sdr_sh, hash, mask);
+/* Secondary table address */
+hash = (~hash) & vsid_mask;
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "sdr " PADDRX " sh %d hash " PADDRX
+" mask " PADDRX "\n",
+sdr, sdr_sh, hash, mask);
+}
+#endif
+ctx->pg_addr[1] = get_pgaddr(sdr, sdr_sh, hash, mask);
+#if defined(TARGET_PPC64)
+if (env->mmu_model & POWERPC_MMU_64) {
+/* Only 5 bits of the page index are used in the AVPN */
+ctx->ptem = (vsid << 12) | ((pgidx >> 4) & 0x0F80);
+} else
+#endif
+{
+ctx->ptem = (vsid << 7) | (pgidx >> 10);
+}
+/* Initialize real address with an invalid value */
+ctx->raddr = (target_phys_addr_t)-1ULL;
+if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
+env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
+/* Software TLB search */
+ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
+} else {
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "0 sdr1=" PADDRX " vsid=" ADDRX " "
+"api=" ADDRX " hash=" PADDRX
+" pg_addr=" PADDRX "\n",
+sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
+}
+#endif
+/* Primary table lookup */
+ret = find_pte(env, ctx, 0, rw, type);
+if (ret < 0) {
+/* Secondary table lookup */
+#if defined (DEBUG_MMU)
+if (eaddr != 0xEFFFFFFF && loglevel != 0) {
+fprintf(logfile, "1 sdr1=" PADDRX " vsid=" ADDRX " "
+"api=" ADDRX " hash=" PADDRX
+" pg_addr=" PADDRX "\n",
+sdr, vsid, pgidx, hash, ctx->pg_addr[1]);
+}
+#endif
+ret2 = find_pte(env, ctx, 1, rw, type);
+if (ret2 != -1)
+ret = ret2;
+}
+}
+#if defined (DUMP_PAGE_TABLES)
+if (loglevel != 0) {
+target_phys_addr_t curaddr;
+uint32_t a0, a1, a2, a3;
+fprintf(logfile, "Page table: " PADDRX " len " PADDRX "\n",
+sdr, mask + 0x80);
+for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
+curaddr += 16) {
+a0 = ldl_phys(curaddr);
+a1 = ldl_phys(curaddr + 4);
+a2 = ldl_phys(curaddr + 8);
+a3 = ldl_phys(curaddr + 12);
+if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
+fprintf(logfile, PADDRX ": %08x %08x %08x %08x\n",
+curaddr, a0, a1, a2, a3);
+}
+}
+}
+#endif
+} else {
+#if defined (DEBUG_MMU)
+if (loglevel != 0)
+fprintf(logfile, "No access allowed\n");
+#endif
+ret = -3;
+}
+} else {
+#if defined (DEBUG_MMU)
+if (loglevel != 0)
+fprintf(logfile, "direct store...\n");
+#endif
+/* Direct-store segment : absolutely *BUGGY* for now */
+switch (type) {
+case ACCESS_INT:
+/* Integer load/store : only access allowed */
+break;
+case ACCESS_CODE:
+/* No code fetch is allowed in direct-store areas */
+return -4;
+case ACCESS_FLOAT:
+/* Floating point load/store */
+return -4;
+case ACCESS_RES:
+/* lwarx, ldarx or srwcx. */
+return -4;
+case ACCESS_CACHE:
+/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
+/* Should make the instruction do no-op.
+* As it already do no-op, it's quite easy :-)
+*/
+ctx->raddr = eaddr;
+return 0;
+case ACCESS_EXT:
+/* eciwx or ecowx */
+return -4;
+default:
+if (logfile) {
+fprintf(logfile, "ERROR: instruction should not need "
+"address translation\n");
+}
+return -4;
+}
+if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
+ctx->raddr = eaddr;
+ret = 2;
+} else {
+ret = -2;
+}
+}
+return ret;
+}
+/* Generic TLB check function for embedded PowerPC implementations */
+static always_inline int ppcemb_tlb_check (CPUState *env, ppcemb_tlb_t *tlb,
+target_phys_addr_t *raddrp,
+target_ulong address,
+uint32_t pid, int ext, int i)
+{
+target_ulong mask;
+/* Check valid flag */
+if (!(tlb->prot & PAGE_VALID)) {
+if (loglevel != 0)
+fprintf(logfile, "%s: TLB %d not valid\n", __func__, i);
+return -1;
+}
+mask = ~(tlb->size - 1);
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: TLB %d address " ADDRX " PID %u <=> " ADDRX
+" " ADDRX " %u\n",
+__func__, i, address, pid, tlb->EPN, mask, (uint32_t)tlb->PID);
+}
+#endif
+/* Check PID */
+if (tlb->PID != 0 && tlb->PID != pid)
+return -1;
+/* Check effective address */
+if ((address & mask) != tlb->EPN)
+return -1;
+*raddrp = (tlb->RPN & mask) | (address & ~mask);
+#if (TARGET_PHYS_ADDR_BITS >= 36)
+if (ext) {
+/* Extend the physical address to 36 bits */
+*raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
+}
+#endif
+return 0;
+}
+/* Generic TLB search function for PowerPC embedded implementations */
+int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
+{
+ppcemb_tlb_t *tlb;
+target_phys_addr_t raddr;
+int i, ret;
+/* Default return value is no match */
+ret = -1;
+for (i = 0; i < env->nb_tlb; i++) {
+tlb = &env->tlb[i].tlbe;
+if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
+ret = i;
+break;
+}
+}
+return ret;
+}
+/* Helpers specific to PowerPC 40x implementations */
+static always_inline void ppc4xx_tlb_invalidate_all (CPUState *env)
+{
+ppcemb_tlb_t *tlb;
+int i;
+for (i = 0; i < env->nb_tlb; i++) {
+tlb = &env->tlb[i].tlbe;
+tlb->prot &= ~PAGE_VALID;
+}
+tlb_flush(env, 1);
+}
+static always_inline void ppc4xx_tlb_invalidate_virt (CPUState *env,
+target_ulong eaddr,
+uint32_t pid)
+{
+#if !defined(FLUSH_ALL_TLBS)
+ppcemb_tlb_t *tlb;
+target_phys_addr_t raddr;
+target_ulong page, end;
+int i;
+for (i = 0; i < env->nb_tlb; i++) {
+tlb = &env->tlb[i].tlbe;
+if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
+end = tlb->EPN + tlb->size;
+for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
+tlb_flush_page(env, page);
+tlb->prot &= ~PAGE_VALID;
+break;
+}
+}
+#else
+ppc4xx_tlb_invalidate_all(env);
+#endif
+}
+static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
+target_ulong address, int rw, int access_type)
+{
+ppcemb_tlb_t *tlb;
+target_phys_addr_t raddr;
+int i, ret, zsel, zpr, pr;
+ret = -1;
+raddr = (target_phys_addr_t)-1ULL;
+pr = msr_pr;
+for (i = 0; i < env->nb_tlb; i++) {
+tlb = &env->tlb[i].tlbe;
+if (ppcemb_tlb_check(env, tlb, &raddr, address,
+env->spr[SPR_40x_PID], 0, i) < 0)
+continue;
+zsel = (tlb->attr >> 4) & 0xF;
+zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3;
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
+__func__, i, zsel, zpr, rw, tlb->attr);
+}
+#endif
+/* Check execute enable bit */
+switch (zpr) {
+case 0x2:
+if (pr != 0)
+goto check_perms;
+/* No break here */
+case 0x3:
+/* All accesses granted */
+ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ret = 0;
+break;
+case 0x0:
+if (pr != 0) {
+ctx->prot = 0;
+ret = -2;
+break;
+}
+/* No break here */
+case 0x1:
+check_perms:
+/* Check from TLB entry */
+/* XXX: there is a problem here or in the TLB fill code... */
+ctx->prot = tlb->prot;
+ctx->prot |= PAGE_EXEC;
+ret = check_prot(ctx->prot, rw, access_type);
+break;
+}
+if (ret >= 0) {
+ctx->raddr = raddr;
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: access granted " ADDRX " => " PADDRX
+" %d %d\n", __func__, address, ctx->raddr, ctx->prot,
+ret);
+}
+#endif
+return 0;
+}
+}
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+fprintf(logfile, "%s: access refused " ADDRX " => " PADDRX
+" %d %d\n", __func__, address, raddr, ctx->prot,
+ret);
+}
+#endif
+return ret;
+}
+void store_40x_sler (CPUPPCState *env, uint32_t val)
+{
+/* XXX: TO BE FIXED */
+if (val != 0x00000000) {
+cpu_abort(env, "Little-endian regions are not supported by now\n");
+}
+env->spr[SPR_405_SLER] = val;
+}
+static int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
+target_ulong address, int rw,
+int access_type)
+{
+ppcemb_tlb_t *tlb;
+target_phys_addr_t raddr;
+int i, prot, ret;
+ret = -1;
+raddr = (target_phys_addr_t)-1ULL;
+for (i = 0; i < env->nb_tlb; i++) {
+tlb = &env->tlb[i].tlbe;
+if (ppcemb_tlb_check(env, tlb, &raddr, address,
+env->spr[SPR_BOOKE_PID], 1, i) < 0)
+continue;
+if (msr_pr != 0)
+prot = tlb->prot & 0xF;
+else
+prot = (tlb->prot >> 4) & 0xF;
+/* Check the address space */
+if (access_type == ACCESS_CODE) {
+if (msr_ir != (tlb->attr & 1))
+continue;
+ctx->prot = prot;
+if (prot & PAGE_EXEC) {
+ret = 0;
+break;
+}
+ret = -3;
+} else {
+if (msr_dr != (tlb->attr & 1))
+continue;
+ctx->prot = prot;
+if ((!rw && prot & PAGE_READ) || (rw && (prot & PAGE_WRITE))) {
+ret = 0;
+break;
+}
+ret = -2;
+}
+}
+if (ret >= 0)
+ctx->raddr = raddr;
+return ret;
+}
+static always_inline int check_physical (CPUState *env, mmu_ctx_t *ctx,
+target_ulong eaddr, int rw)
+{
+int in_plb, ret;
+ctx->raddr = eaddr;
+ctx->prot = PAGE_READ | PAGE_EXEC;
+ret = 0;
+switch (env->mmu_model) {
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+case POWERPC_MMU_SOFT_6xx:
+case POWERPC_MMU_SOFT_74xx:
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_REAL:
+case POWERPC_MMU_BOOKE:
+ctx->prot |= PAGE_WRITE;
+break;
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+/* Real address are 60 bits long */
+ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
+ctx->prot |= PAGE_WRITE;
+break;
+#endif
+case POWERPC_MMU_SOFT_4xx_Z:
+if (unlikely(msr_pe != 0)) {
+/* 403 family add some particular protections,
+* using PBL/PBU registers for accesses with no translation.
+*/
+in_plb =
+/* Check PLB validity */
+(env->pb[0] < env->pb[1] &&
+/* and address in plb area */
+eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
+(env->pb[2] < env->pb[3] &&
+eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
+if (in_plb ^ msr_px) {
+/* Access in protected area */
+if (rw == 1) {
+/* Access is not allowed */
+ret = -2;
+}
+} else {
+/* Read-write access is allowed */
+ctx->prot |= PAGE_WRITE;
+}
+}
+break;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE FSL MMU model not implemented\n");
+break;
+default:
+cpu_abort(env, "Unknown or invalid MMU model\n");
+return -1;
+}
+return ret;
+}
+int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
+int rw, int access_type)
+{
+int ret;
+#if 0
+if (loglevel != 0) {
+fprintf(logfile, "%s\n", __func__);
+}
+#endif
+if ((access_type == ACCESS_CODE && msr_ir == 0) ||
+(access_type != ACCESS_CODE && msr_dr == 0)) {
+/* No address translation */
+ret = check_physical(env, ctx, eaddr, rw);
+} else {
+ret = -1;
+switch (env->mmu_model) {
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+case POWERPC_MMU_SOFT_6xx:
+case POWERPC_MMU_SOFT_74xx:
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+#endif
+/* Try to find a BAT */
+if (env->nb_BATs != 0)
+ret = get_bat(env, ctx, eaddr, rw, access_type);
+if (ret < 0) {
+/* We didn't match any BAT entry or don't have BATs */
+ret = get_segment(env, ctx, eaddr, rw, access_type);
+}
+break;
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_SOFT_4xx_Z:
+ret = mmu40x_get_physical_address(env, ctx, eaddr,
+rw, access_type);
+break;
+case POWERPC_MMU_BOOKE:
+ret = mmubooke_get_physical_address(env, ctx, eaddr,
+rw, access_type);
+break;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE FSL MMU model not implemented\n");
+return -1;
+case POWERPC_MMU_REAL:
+cpu_abort(env, "PowerPC in real mode do not do any translation\n");
+return -1;
+default:
+cpu_abort(env, "Unknown or invalid MMU model\n");
+return -1;
+}
+}
+#if 0
+if (loglevel != 0) {
+fprintf(logfile, "%s address " ADDRX " => %d " PADDRX "\n",
+__func__, eaddr, ret, ctx->raddr);
+}
+#endif
+return ret;
+}
+target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
+{
+mmu_ctx_t ctx;
+if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0))
+return -1;
+return ctx.raddr & TARGET_PAGE_MASK;
+}
+/* Perform address translation */
+int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
+int mmu_idx, int is_softmmu)
+{
+mmu_ctx_t ctx;
+int access_type;
+int ret = 0;
+if (rw == 2) {
+/* code access */
+rw = 0;
+access_type = ACCESS_CODE;
+} else {
+/* data access */
+access_type = env->access_type;
+}
+ret = get_physical_address(env, &ctx, address, rw, access_type);
+if (ret == 0) {
+ret = tlb_set_page_exec(env, address & TARGET_PAGE_MASK,
+ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
+mmu_idx, is_softmmu);
+} else if (ret < 0) {
+#if defined (DEBUG_MMU)
+if (loglevel != 0)
+cpu_dump_state(env, logfile, fprintf, 0);
+#endif
+if (access_type == ACCESS_CODE) {
+switch (ret) {
+case -1:
+/* No matches in page tables or TLB */
+switch (env->mmu_model) {
+case POWERPC_MMU_SOFT_6xx:
+env->exception_index = POWERPC_EXCP_IFTLB;
+env->error_code = 1 << 18;
+env->spr[SPR_IMISS] = address;
+env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
+goto tlb_miss;
+case POWERPC_MMU_SOFT_74xx:
+env->exception_index = POWERPC_EXCP_IFTLB;
+goto tlb_miss_74xx;
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_SOFT_4xx_Z:
+env->exception_index = POWERPC_EXCP_ITLB;
+env->error_code = 0;
+env->spr[SPR_40x_DEAR] = address;
+env->spr[SPR_40x_ESR] = 0x00000000;
+break;
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+#endif
+env->exception_index = POWERPC_EXCP_ISI;
+env->error_code = 0x40000000;
+break;
+case POWERPC_MMU_BOOKE:
+/* XXX: TODO */
+cpu_abort(env, "BookE MMU model is not implemented\n");
+return -1;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE FSL MMU model is not implemented\n");
+return -1;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_REAL:
+cpu_abort(env, "PowerPC in real mode should never raise "
+"any MMU exceptions\n");
+return -1;
+default:
+cpu_abort(env, "Unknown or invalid MMU model\n");
+return -1;
+}
+break;
+case -2:
+/* Access rights violation */
+env->exception_index = POWERPC_EXCP_ISI;
+env->error_code = 0x08000000;
+break;
+case -3:
+/* No execute protection violation */
+env->exception_index = POWERPC_EXCP_ISI;
+env->error_code = 0x10000000;
+break;
+case -4:
+/* Direct store exception */
+/* No code fetch is allowed in direct-store areas */
+env->exception_index = POWERPC_EXCP_ISI;
+env->error_code = 0x10000000;
+break;
+#if defined(TARGET_PPC64)
+case -5:
+/* No match in segment table */
+if (env->mmu_model == POWERPC_MMU_620) {
+env->exception_index = POWERPC_EXCP_ISI;
+/* XXX: this might be incorrect */
+env->error_code = 0x40000000;
+} else {
+env->exception_index = POWERPC_EXCP_ISEG;
+env->error_code = 0;
+}
+break;
+#endif
+}
+} else {
+switch (ret) {
+case -1:
+/* No matches in page tables or TLB */
+switch (env->mmu_model) {
+case POWERPC_MMU_SOFT_6xx:
+if (rw == 1) {
+env->exception_index = POWERPC_EXCP_DSTLB;
+env->error_code = 1 << 16;
+} else {
+env->exception_index = POWERPC_EXCP_DLTLB;
+env->error_code = 0;
+}
+env->spr[SPR_DMISS] = address;
+env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
+tlb_miss:
+env->error_code |= ctx.key << 19;
+env->spr[SPR_HASH1] = ctx.pg_addr[0];
+env->spr[SPR_HASH2] = ctx.pg_addr[1];
+break;
+case POWERPC_MMU_SOFT_74xx:
+if (rw == 1) {
+env->exception_index = POWERPC_EXCP_DSTLB;
+} else {
+env->exception_index = POWERPC_EXCP_DLTLB;
+}
+tlb_miss_74xx:
+/* Implement LRU algorithm */
+env->error_code = ctx.key << 19;
+env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
+((env->last_way + 1) & (env->nb_ways - 1));
+env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
+break;
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_SOFT_4xx_Z:
+env->exception_index = POWERPC_EXCP_DTLB;
+env->error_code = 0;
+env->spr[SPR_40x_DEAR] = address;
+if (rw)
+env->spr[SPR_40x_ESR] = 0x00800000;
+else
+env->spr[SPR_40x_ESR] = 0x00000000;
+break;
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+#endif
+env->exception_index = POWERPC_EXCP_DSI;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+if (rw == 1)
+env->spr[SPR_DSISR] = 0x42000000;
+else
+env->spr[SPR_DSISR] = 0x40000000;
+break;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE:
+/* XXX: TODO */
+cpu_abort(env, "BookE MMU model is not implemented\n");
+return -1;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE FSL MMU model is not implemented\n");
+return -1;
+case POWERPC_MMU_REAL:
+cpu_abort(env, "PowerPC in real mode should never raise "
+"any MMU exceptions\n");
+return -1;
+default:
+cpu_abort(env, "Unknown or invalid MMU model\n");
+return -1;
+}
+break;
+case -2:
+/* Access rights violation */
+env->exception_index = POWERPC_EXCP_DSI;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+if (rw == 1)
+env->spr[SPR_DSISR] = 0x0A000000;
+else
+env->spr[SPR_DSISR] = 0x08000000;
+break;
+case -4:
+/* Direct store exception */
+switch (access_type) {
+case ACCESS_FLOAT:
+/* Floating point load/store */
+env->exception_index = POWERPC_EXCP_ALIGN;
+env->error_code = POWERPC_EXCP_ALIGN_FP;
+env->spr[SPR_DAR] = address;
+break;
+case ACCESS_RES:
+/* lwarx, ldarx or stwcx. */
+env->exception_index = POWERPC_EXCP_DSI;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+if (rw == 1)
+env->spr[SPR_DSISR] = 0x06000000;
+else
+env->spr[SPR_DSISR] = 0x04000000;
+break;
+case ACCESS_EXT:
+/* eciwx or ecowx */
+env->exception_index = POWERPC_EXCP_DSI;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+if (rw == 1)
+env->spr[SPR_DSISR] = 0x06100000;
+else
+env->spr[SPR_DSISR] = 0x04100000;
+break;
+default:
+printf("DSI: invalid exception (%d)\n", ret);
+env->exception_index = POWERPC_EXCP_PROGRAM;
+env->error_code =
+POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
+env->spr[SPR_DAR] = address;
+break;
+}
+break;
+#if defined(TARGET_PPC64)
+case -5:
+/* No match in segment table */
+if (env->mmu_model == POWERPC_MMU_620) {
+env->exception_index = POWERPC_EXCP_DSI;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+/* XXX: this might be incorrect */
+if (rw == 1)
+env->spr[SPR_DSISR] = 0x42000000;
+else
+env->spr[SPR_DSISR] = 0x40000000;
+} else {
+env->exception_index = POWERPC_EXCP_DSEG;
+env->error_code = 0;
+env->spr[SPR_DAR] = address;
+}
+break;
+#endif
+}
+}
+#if 0
+printf("%s: set exception to %d %02x\n", __func__,
+env->exception, env->error_code);
+#endif
+ret = 1;
+}
+return ret;
+}
+/*****************************************************************************/
+/* BATs management */
+#if !defined(FLUSH_ALL_TLBS)
+static always_inline void do_invalidate_BAT (CPUPPCState *env,
+target_ulong BATu,
+target_ulong mask)
+{
+target_ulong base, end, page;
+base = BATu & ~0x0001FFFF;
+end = base + mask + 0x00020000;
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n",
+base, end, mask);
+}
+#endif
+for (page = base; page != end; page += TARGET_PAGE_SIZE)
+tlb_flush_page(env, page);
+#if defined (DEBUG_BATS)
+if (loglevel != 0)
+fprintf(logfile, "Flush done\n");
+#endif
+}
+#endif
+static always_inline void dump_store_bat (CPUPPCState *env, char ID,
+int ul, int nr, target_ulong value)
+{
+#if defined (DEBUG_BATS)
+if (loglevel != 0) {
+fprintf(logfile, "Set %cBAT%d%c to " ADDRX " (" ADDRX ")\n",
+ID, nr, ul == 0 ? 'u' : 'l', value, env->nip);
+}
+#endif
+}
+void ppc_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
+{
+target_ulong mask;
+dump_store_bat(env, 'I', 0, nr, value);
+if (env->IBAT[0][nr] != value) {
+mask = (value << 15) & 0x0FFE0000UL;
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#endif
+/* When storing valid upper BAT, mask BEPI and BRPN
+* and invalidate all TLBs covered by this BAT
+*/
+mask = (value << 15) & 0x0FFE0000UL;
+env->IBAT[0][nr] = (value & 0x00001FFFUL) |
+(value & ~0x0001FFFFUL & ~mask);
+env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
+(env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+tlb_flush(env, 1);
+#endif
+}
+}
+void ppc_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
+{
+dump_store_bat(env, 'I', 1, nr, value);
+env->IBAT[1][nr] = value;
+}
+void ppc_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
+{
+target_ulong mask;
+dump_store_bat(env, 'D', 0, nr, value);
+if (env->DBAT[0][nr] != value) {
+/* When storing valid upper BAT, mask BEPI and BRPN
+* and invalidate all TLBs covered by this BAT
+*/
+mask = (value << 15) & 0x0FFE0000UL;
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->DBAT[0][nr], mask);
+#endif
+mask = (value << 15) & 0x0FFE0000UL;
+env->DBAT[0][nr] = (value & 0x00001FFFUL) |
+(value & ~0x0001FFFFUL & ~mask);
+env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
+(env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->DBAT[0][nr], mask);
+#else
+tlb_flush(env, 1);
+#endif
+}
+}
+void ppc_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
+{
+dump_store_bat(env, 'D', 1, nr, value);
+env->DBAT[1][nr] = value;
+}
+void ppc_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
+{
+target_ulong mask;
+int do_inval;
+dump_store_bat(env, 'I', 0, nr, value);
+if (env->IBAT[0][nr] != value) {
+do_inval = 0;
+mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
+if (env->IBAT[1][nr] & 0x40) {
+/* Invalidate BAT only if it is valid */
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+do_inval = 1;
+#endif
+}
+/* When storing valid upper BAT, mask BEPI and BRPN
+* and invalidate all TLBs covered by this BAT
+*/
+env->IBAT[0][nr] = (value & 0x00001FFFUL) |
+(value & ~0x0001FFFFUL & ~mask);
+env->DBAT[0][nr] = env->IBAT[0][nr];
+if (env->IBAT[1][nr] & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+do_inval = 1;
+#endif
+}
+#if defined(FLUSH_ALL_TLBS)
+if (do_inval)
+tlb_flush(env, 1);
+#endif
+}
+}
+void ppc_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
+{
+target_ulong mask;
+int do_inval;
+dump_store_bat(env, 'I', 1, nr, value);
+if (env->IBAT[1][nr] != value) {
+do_inval = 0;
+if (env->IBAT[1][nr] & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+do_inval = 1;
+#endif
+}
+if (value & 0x40) {
+#if !defined(FLUSH_ALL_TLBS)
+mask = (value << 17) & 0x0FFE0000UL;
+do_invalidate_BAT(env, env->IBAT[0][nr], mask);
+#else
+do_inval = 1;
+#endif
+}
+env->IBAT[1][nr] = value;
+env->DBAT[1][nr] = value;
+#if defined(FLUSH_ALL_TLBS)
+if (do_inval)
+tlb_flush(env, 1);
+#endif
+}
+}
+/*****************************************************************************/
+/* TLB management */
+void ppc_tlb_invalidate_all (CPUPPCState *env)
+{
+switch (env->mmu_model) {
+case POWERPC_MMU_SOFT_6xx:
+case POWERPC_MMU_SOFT_74xx:
+ppc6xx_tlb_invalidate_all(env);
+break;
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_SOFT_4xx_Z:
+ppc4xx_tlb_invalidate_all(env);
+break;
+case POWERPC_MMU_REAL:
+cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
+break;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE:
+/* XXX: TODO */
+cpu_abort(env, "BookE MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE MMU model is not implemented\n");
+break;
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+#endif /* defined(TARGET_PPC64) */
+tlb_flush(env, 1);
+break;
+default:
+/* XXX: TODO */
+cpu_abort(env, "Unknown MMU model\n");
+break;
+}
+}
+void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
+{
+#if !defined(FLUSH_ALL_TLBS)
+addr &= TARGET_PAGE_MASK;
+switch (env->mmu_model) {
+case POWERPC_MMU_SOFT_6xx:
+case POWERPC_MMU_SOFT_74xx:
+ppc6xx_tlb_invalidate_virt(env, addr, 0);
+if (env->id_tlbs == 1)
+ppc6xx_tlb_invalidate_virt(env, addr, 1);
+break;
+case POWERPC_MMU_SOFT_4xx:
+case POWERPC_MMU_SOFT_4xx_Z:
+ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
+break;
+case POWERPC_MMU_REAL:
+cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
+break;
+case POWERPC_MMU_MPC8xx:
+/* XXX: TODO */
+cpu_abort(env, "MPC8xx MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE:
+/* XXX: TODO */
+cpu_abort(env, "BookE MMU model is not implemented\n");
+break;
+case POWERPC_MMU_BOOKE_FSL:
+/* XXX: TODO */
+cpu_abort(env, "BookE FSL MMU model is not implemented\n");
+break;
+case POWERPC_MMU_32B:
+case POWERPC_MMU_601:
+/* tlbie invalidate TLBs for all segments */
+addr &= ~((target_ulong)-1ULL << 28);
+/* XXX: this case should be optimized,
+* giving a mask to tlb_flush_page
+*/
+tlb_flush_page(env, addr | (0x0 << 28));
+tlb_flush_page(env, addr | (0x1 << 28));
+tlb_flush_page(env, addr | (0x2 << 28));
+tlb_flush_page(env, addr | (0x3 << 28));
+tlb_flush_page(env, addr | (0x4 << 28));
+tlb_flush_page(env, addr | (0x5 << 28));
+tlb_flush_page(env, addr | (0x6 << 28));
+tlb_flush_page(env, addr | (0x7 << 28));
+tlb_flush_page(env, addr | (0x8 << 28));
+tlb_flush_page(env, addr | (0x9 << 28));
+tlb_flush_page(env, addr | (0xA << 28));
+tlb_flush_page(env, addr | (0xB << 28));
+tlb_flush_page(env, addr | (0xC << 28));
+tlb_flush_page(env, addr | (0xD << 28));
+tlb_flush_page(env, addr | (0xE << 28));
+tlb_flush_page(env, addr | (0xF << 28));
+break;
+#if defined(TARGET_PPC64)
+case POWERPC_MMU_620:
+case POWERPC_MMU_64B:
+/* tlbie invalidate TLBs for all segments */
+/* XXX: given the fact that there are too many segments to invalidate,
+*      and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
+*      we just invalidate all TLBs
+*/
+tlb_flush(env, 1);
+break;
+#endif /* defined(TARGET_PPC64) */
+default:
+/* XXX: TODO */
+cpu_abort(env, "Unknown MMU model\n");
+break;
+}
+#else
+ppc_tlb_invalidate_all(env);
+#endif
+}
+/*****************************************************************************/
+/* Special registers manipulation */
+#if defined(TARGET_PPC64)
+void ppc_store_asr (CPUPPCState *env, target_ulong value)
+{
+if (env->asr != value) {
+env->asr = value;
+tlb_flush(env, 1);
+}
+}
+#endif
+void ppc_store_sdr1 (CPUPPCState *env, target_ulong value)
+{
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "%s: " ADDRX "\n", __func__, value);
+}
+#endif
+if (env->sdr1 != value) {
+/* XXX: for PowerPC 64, should check that the HTABSIZE value
+*      is <= 28
+*/
+env->sdr1 = value;
+tlb_flush(env, 1);
+}
+}
+void ppc_store_sr (CPUPPCState *env, int srnum, target_ulong value)
+{
+#if defined (DEBUG_MMU)
+if (loglevel != 0) {
+fprintf(logfile, "%s: reg=%d " ADDRX " " ADDRX "\n",
+__func__, srnum, value, env->sr[srnum]);
+}
+#endif
+if (env->sr[srnum] != value) {
+env->sr[srnum] = value;
+#if !defined(FLUSH_ALL_TLBS) && 0
+{
+target_ulong page, end;
+/* Invalidate 256 MB of virtual memory */
+page = (16 << 20) * srnum;
+end = page + (16 << 20);
+for (; page != end; page += TARGET_PAGE_SIZE)
+tlb_flush_page(env, page);
+}
+#else
+tlb_flush(env, 1);
+#endif
+}
+}
+#endif /* !defined (CONFIG_USER_ONLY) */
+/* GDBstub can read and write MSR... */
+void ppc_store_msr (CPUPPCState *env, target_ulong value)
+{
+hreg_store_msr(env, value, 0);
+}
+/*****************************************************************************/
+/* Exception processing */
+#if defined (CONFIG_USER_ONLY)
+void do_interrupt (CPUState *env)
+{
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+}
+void ppc_hw_interrupt (CPUState *env)
+{
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+}
+#else /* defined (CONFIG_USER_ONLY) */
+static always_inline void dump_syscall (CPUState *env)
+{
+fprintf(logfile, "syscall r0=" REGX " r3=" REGX " r4=" REGX
+" r5=" REGX " r6=" REGX " nip=" ADDRX "\n",
+ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
+ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6), env->nip);
+}
+extern int semihosting_enabled;
+/* Note that this function should be greatly optimized
+* when called with a constant excp, from ppc_hw_interrupt
+*/
+static always_inline void powerpc_excp (CPUState *env,
+int excp_model, int excp)
+{
+target_ulong msr, new_msr, vector;
+int srr0, srr1, asrr0, asrr1;
+int lpes0, lpes1, lev;
+if (0) {
+/* XXX: find a suitable condition to enable the hypervisor mode */
+lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
+lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
+} else {
+/* Those values ensure we won't enter the hypervisor mode */
+lpes0 = 0;
+lpes1 = 1;
+}
+if (loglevel & CPU_LOG_INT) {
+fprintf(logfile, "Raise exception at " ADDRX " => %08x (%02x)\n",
+env->nip, excp, env->error_code);
+}
+msr = env->msr;
+new_msr = msr;
+srr0 = SPR_SRR0;
+srr1 = SPR_SRR1;
+asrr0 = -1;
+asrr1 = -1;
+msr &= ~((target_ulong)0x783F0000);
+switch (excp) {
+case POWERPC_EXCP_NONE:
+/* Should never happen */
+return;
+case POWERPC_EXCP_CRITICAL:    /* Critical input                         */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+switch (excp_model) {
+case POWERPC_EXCP_40x:
+srr0 = SPR_40x_SRR2;
+srr1 = SPR_40x_SRR3;
+break;
+case POWERPC_EXCP_BOOKE:
+srr0 = SPR_BOOKE_CSRR0;
+srr1 = SPR_BOOKE_CSRR1;
+break;
+case POWERPC_EXCP_G2:
+break;
+default:
+goto excp_invalid;
+}
+goto store_next;
+case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
+if (msr_me == 0) {
+/* Machine check exception is not enabled.
+* Enter checkstop state.
+*/
+if (loglevel != 0) {
+fprintf(logfile, "Machine check while not allowed. "
+"Entering checkstop state\n");
+} else {
+fprintf(stderr, "Machine check while not allowed. "
+"Entering checkstop state\n");
+}
+env->halted = 1;
+env->interrupt_request |= CPU_INTERRUPT_EXITTB;
+}
+new_msr &= ~((target_ulong)1 << MSR_RI);
+new_msr &= ~((target_ulong)1 << MSR_ME);
+if (0) {
+/* XXX: find a suitable condition to enable the hypervisor mode */
+new_msr |= (target_ulong)MSR_HVB;
+}
+/* XXX: should also have something loaded in DAR / DSISR */
+switch (excp_model) {
+case POWERPC_EXCP_40x:
+srr0 = SPR_40x_SRR2;
+srr1 = SPR_40x_SRR3;
+break;
+case POWERPC_EXCP_BOOKE:
+srr0 = SPR_BOOKE_MCSRR0;
+srr1 = SPR_BOOKE_MCSRR1;
+asrr0 = SPR_BOOKE_CSRR0;
+asrr1 = SPR_BOOKE_CSRR1;
+break;
+default:
+break;
+}
+goto store_next;
+case POWERPC_EXCP_DSI:       /* Data storage exception                   */
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0) {
+fprintf(logfile, "DSI exception: DSISR=" ADDRX" DAR=" ADDRX "\n",
+env->spr[SPR_DSISR], env->spr[SPR_DAR]);
+}
+#endif
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_ISI:       /* Instruction storage exception            */
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0) {
+fprintf(logfile, "ISI exception: msr=" ADDRX ", nip=" ADDRX "\n",
+msr, env->nip);
+}
+#endif
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+msr |= env->error_code;
+goto store_next;
+case POWERPC_EXCP_EXTERNAL:  /* External input                           */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes0 == 1)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_ALIGN:     /* Alignment exception                      */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+/* XXX: this is false */
+/* Get rS/rD and rA from faulting opcode */
+env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
+goto store_current;
+case POWERPC_EXCP_PROGRAM:   /* Program exception                        */
+switch (env->error_code & ~0xF) {
+case POWERPC_EXCP_FP:
+if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0) {
+fprintf(logfile, "Ignore floating point exception\n");
+}
+#endif
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+return;
+}
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+msr |= 0x00100000;
+if (msr_fe0 == msr_fe1)
+goto store_next;
+msr |= 0x00010000;
+break;
+case POWERPC_EXCP_INVAL:
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0) {
+fprintf(logfile, "Invalid instruction at " ADDRX "\n",
+env->nip);
+}
+#endif
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+msr |= 0x00080000;
+break;
+case POWERPC_EXCP_PRIV:
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+msr |= 0x00040000;
+break;
+case POWERPC_EXCP_TRAP:
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+msr |= 0x00020000;
+break;
+default:
+/* Should never occur */
+cpu_abort(env, "Invalid program exception %d. Aborting\n",
+env->error_code);
+break;
+}
+goto store_current;
+case POWERPC_EXCP_FPU:       /* Floating-point unavailable exception     */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_current;
+case POWERPC_EXCP_SYSCALL:   /* System call exception                    */
+/* Semihosted syscall mode.  */
+if (semihosting_enabled) {
+do_ppc_semihosting(env);
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+return;
+}
+/* NOTE: this is a temporary hack to support graphics OSI
+calls from the MOL driver */
+/* XXX: To be removed */
+if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
+env->osi_call) {
+if (env->osi_call(env) != 0) {
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+return;
+}
+}
+if (loglevel & CPU_LOG_INT) {
+dump_syscall(env);
+}
+new_msr &= ~((target_ulong)1 << MSR_RI);
+lev = env->error_code;
+if (lev == 1 || (lpes0 == 0 && lpes1 == 0))
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_APU:       /* Auxiliary processor unavailable          */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+goto store_current;
+case POWERPC_EXCP_DECR:      /* Decrementer exception                    */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_FIT:       /* Fixed-interval timer interrupt           */
+/* FIT on 4xx */
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0)
+fprintf(logfile, "FIT exception\n");
+#endif
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_next;
+case POWERPC_EXCP_WDT:       /* Watchdog timer interrupt                 */
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0)
+fprintf(logfile, "WDT exception\n");
+#endif
+switch (excp_model) {
+case POWERPC_EXCP_BOOKE:
+srr0 = SPR_BOOKE_CSRR0;
+srr1 = SPR_BOOKE_CSRR1;
+break;
+default:
+break;
+}
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_next;
+case POWERPC_EXCP_DTLB:      /* Data TLB error                           */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_next;
+case POWERPC_EXCP_ITLB:      /* Instruction TLB error                    */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_next;
+case POWERPC_EXCP_DEBUG:     /* Debug interrupt                          */
+switch (excp_model) {
+case POWERPC_EXCP_BOOKE:
+srr0 = SPR_BOOKE_DSRR0;
+srr1 = SPR_BOOKE_DSRR1;
+asrr0 = SPR_BOOKE_CSRR0;
+asrr1 = SPR_BOOKE_CSRR1;
+break;
+default:
+break;
+}
+/* XXX: TODO */
+cpu_abort(env, "Debug exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_SPEU:      /* SPE/embedded floating-point unavailable  */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_current;
+case POWERPC_EXCP_EFPDI:     /* Embedded floating-point data interrupt   */
+/* XXX: TODO */
+cpu_abort(env, "Embedded floating point data exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_EFPRI:     /* Embedded floating-point round interrupt  */
+/* XXX: TODO */
+cpu_abort(env, "Embedded floating point round exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_EPERFM:    /* Embedded performance monitor interrupt   */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+/* XXX: TODO */
+cpu_abort(env,
+"Performance counter exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_DOORI:     /* Embedded doorbell interrupt              */
+/* XXX: TODO */
+cpu_abort(env,
+"Embedded doorbell interrupt is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_DOORCI:    /* Embedded doorbell critical interrupt     */
+switch (excp_model) {
+case POWERPC_EXCP_BOOKE:
+srr0 = SPR_BOOKE_CSRR0;
+srr1 = SPR_BOOKE_CSRR1;
+break;
+default:
+break;
+}
+/* XXX: TODO */
+cpu_abort(env, "Embedded doorbell critical interrupt "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_RESET:     /* System reset exception                   */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (0) {
+/* XXX: find a suitable condition to enable the hypervisor mode */
+new_msr |= (target_ulong)MSR_HVB;
+}
+goto store_next;
+case POWERPC_EXCP_DSEG:      /* Data segment exception                   */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_ISEG:      /* Instruction segment exception            */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_HDECR:     /* Hypervisor decrementer exception         */
+srr0 = SPR_HSRR0;
+srr1 = SPR_HSRR1;
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_TRACE:     /* Trace exception                          */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_HDSI:      /* Hypervisor data storage exception        */
+srr0 = SPR_HSRR0;
+srr1 = SPR_HSRR1;
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_HISI:      /* Hypervisor instruction storage exception */
+srr0 = SPR_HSRR0;
+srr1 = SPR_HSRR1;
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_HDSEG:     /* Hypervisor data segment exception        */
+srr0 = SPR_HSRR0;
+srr1 = SPR_HSRR1;
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_HISEG:     /* Hypervisor instruction segment exception */
+srr0 = SPR_HSRR0;
+srr1 = SPR_HSRR1;
+new_msr |= (target_ulong)MSR_HVB;
+goto store_next;
+case POWERPC_EXCP_VPU:       /* Vector unavailable exception             */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+goto store_current;
+case POWERPC_EXCP_PIT:       /* Programmable interval timer interrupt    */
+#if defined (DEBUG_EXCEPTIONS)
+if (loglevel != 0)
+fprintf(logfile, "PIT exception\n");
+#endif
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+goto store_next;
+case POWERPC_EXCP_IO:        /* IO error exception                       */
+/* XXX: TODO */
+cpu_abort(env, "601 IO error exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_RUNM:      /* Run mode exception                       */
+/* XXX: TODO */
+cpu_abort(env, "601 run mode exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_EMUL:      /* Emulation trap exception                 */
+/* XXX: TODO */
+cpu_abort(env, "602 emulation trap exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_IFTLB:     /* Instruction fetch TLB error              */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+if (lpes1 == 0) /* XXX: check this */
+new_msr |= (target_ulong)MSR_HVB;
+switch (excp_model) {
+case POWERPC_EXCP_602:
+case POWERPC_EXCP_603:
+case POWERPC_EXCP_603E:
+case POWERPC_EXCP_G2:
+goto tlb_miss_tgpr;
+case POWERPC_EXCP_7x5:
+goto tlb_miss;
+case POWERPC_EXCP_74xx:
+goto tlb_miss_74xx;
+default:
+cpu_abort(env, "Invalid instruction TLB miss exception\n");
+break;
+}
+break;
+case POWERPC_EXCP_DLTLB:     /* Data load TLB miss                       */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+if (lpes1 == 0) /* XXX: check this */
+new_msr |= (target_ulong)MSR_HVB;
+switch (excp_model) {
+case POWERPC_EXCP_602:
+case POWERPC_EXCP_603:
+case POWERPC_EXCP_603E:
+case POWERPC_EXCP_G2:
+goto tlb_miss_tgpr;
+case POWERPC_EXCP_7x5:
+goto tlb_miss;
+case POWERPC_EXCP_74xx:
+goto tlb_miss_74xx;
+default:
+cpu_abort(env, "Invalid data load TLB miss exception\n");
+break;
+}
+break;
+case POWERPC_EXCP_DSTLB:     /* Data store TLB miss                      */
+new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
+if (lpes1 == 0) /* XXX: check this */
+new_msr |= (target_ulong)MSR_HVB;
+switch (excp_model) {
+case POWERPC_EXCP_602:
+case POWERPC_EXCP_603:
+case POWERPC_EXCP_603E:
+case POWERPC_EXCP_G2:
+tlb_miss_tgpr:
+/* Swap temporary saved registers with GPRs */
+if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
+new_msr |= (target_ulong)1 << MSR_TGPR;
+hreg_swap_gpr_tgpr(env);
+}
+goto tlb_miss;
+case POWERPC_EXCP_7x5:
+tlb_miss:
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+const unsigned char *es;
+target_ulong *miss, *cmp;
+int en;
+if (excp == POWERPC_EXCP_IFTLB) {
+es = "I";
+en = 'I';
+miss = &env->spr[SPR_IMISS];
+cmp = &env->spr[SPR_ICMP];
+} else {
+if (excp == POWERPC_EXCP_DLTLB)
+es = "DL";
+else
+es = "DS";
+en = 'D';
+miss = &env->spr[SPR_DMISS];
+cmp = &env->spr[SPR_DCMP];
+}
+fprintf(logfile, "6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
+" H1 " ADDRX " H2 " ADDRX " %08x\n",
+es, en, *miss, en, *cmp,
+env->spr[SPR_HASH1], env->spr[SPR_HASH2],
+env->error_code);
+}
+#endif
+msr |= env->crf[0] << 28;
+msr |= env->error_code; /* key, D/I, S/L bits */
+/* Set way using a LRU mechanism */
+msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
+break;
+case POWERPC_EXCP_74xx:
+tlb_miss_74xx:
+#if defined (DEBUG_SOFTWARE_TLB)
+if (loglevel != 0) {
+const unsigned char *es;
+target_ulong *miss, *cmp;
+int en;
+if (excp == POWERPC_EXCP_IFTLB) {
+es = "I";
+en = 'I';
+miss = &env->spr[SPR_TLBMISS];
+cmp = &env->spr[SPR_PTEHI];
+} else {
+if (excp == POWERPC_EXCP_DLTLB)
+es = "DL";
+else
+es = "DS";
+en = 'D';
+miss = &env->spr[SPR_TLBMISS];
+cmp = &env->spr[SPR_PTEHI];
+}
+fprintf(logfile, "74xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
+" %08x\n",
+es, en, *miss, en, *cmp, env->error_code);
+}
+#endif
+msr |= env->error_code; /* key bit */
+break;
+default:
+cpu_abort(env, "Invalid data store TLB miss exception\n");
+break;
+}
+goto store_next;
+case POWERPC_EXCP_FPA:       /* Floating-point assist exception          */
+/* XXX: TODO */
+cpu_abort(env, "Floating point assist exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_DABR:      /* Data address breakpoint                  */
+/* XXX: TODO */
+cpu_abort(env, "DABR exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_IABR:      /* Instruction address breakpoint           */
+/* XXX: TODO */
+cpu_abort(env, "IABR exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_SMI:       /* System management interrupt              */
+/* XXX: TODO */
+cpu_abort(env, "SMI exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_THERM:     /* Thermal interrupt                        */
+/* XXX: TODO */
+cpu_abort(env, "Thermal management exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_PERFM:     /* Embedded performance monitor interrupt   */
+new_msr &= ~((target_ulong)1 << MSR_RI);
+if (lpes1 == 0)
+new_msr |= (target_ulong)MSR_HVB;
+/* XXX: TODO */
+cpu_abort(env,
+"Performance counter exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_VPUA:      /* Vector assist exception                  */
+/* XXX: TODO */
+cpu_abort(env, "VPU assist exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_SOFTP:     /* Soft patch exception                     */
+/* XXX: TODO */
+cpu_abort(env,
+"970 soft-patch exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_MAINT:     /* Maintenance exception                    */
+/* XXX: TODO */
+cpu_abort(env,
+"970 maintenance exception is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_MEXTBR:    /* Maskable external breakpoint             */
+/* XXX: TODO */
+cpu_abort(env, "Maskable external exception "
+"is not implemented yet !\n");
+goto store_next;
+case POWERPC_EXCP_NMEXTBR:   /* Non maskable external breakpoint         */
+/* XXX: TODO */
+cpu_abort(env, "Non maskable external exception "
+"is not implemented yet !\n");
+goto store_next;
+default:
+excp_invalid:
+cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
+break;
+store_current:
+/* save current instruction location */
+env->spr[srr0] = env->nip - 4;
+break;
+store_next:
+/* save next instruction location */
+env->spr[srr0] = env->nip;
+break;
+}
+/* Save MSR */
+env->spr[srr1] = msr;
+/* If any alternate SRR register are defined, duplicate saved values */
+if (asrr0 != -1)
+env->spr[asrr0] = env->spr[srr0];
+if (asrr1 != -1)
+env->spr[asrr1] = env->spr[srr1];
+/* If we disactivated any translation, flush TLBs */
+if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR)))
+tlb_flush(env, 1);
+/* reload MSR with correct bits */
+new_msr &= ~((target_ulong)1 << MSR_EE);
+new_msr &= ~((target_ulong)1 << MSR_PR);
+new_msr &= ~((target_ulong)1 << MSR_FP);
+new_msr &= ~((target_ulong)1 << MSR_FE0);
+new_msr &= ~((target_ulong)1 << MSR_SE);
+new_msr &= ~((target_ulong)1 << MSR_BE);
+new_msr &= ~((target_ulong)1 << MSR_FE1);
+new_msr &= ~((target_ulong)1 << MSR_IR);
+new_msr &= ~((target_ulong)1 << MSR_DR);
+#if 0 /* Fix this: not on all targets */
+new_msr &= ~((target_ulong)1 << MSR_PMM);
+#endif
+new_msr &= ~((target_ulong)1 << MSR_LE);
+if (msr_ile)
+new_msr |= (target_ulong)1 << MSR_LE;
+else
+new_msr &= ~((target_ulong)1 << MSR_LE);
+/* Jump to handler */
+vector = env->excp_vectors[excp];
+if (vector == (target_ulong)-1ULL) {
+cpu_abort(env, "Raised an exception without defined vector %d\n",
+excp);
+}
+vector |= env->excp_prefix;
+#if defined(TARGET_PPC64)
+if (excp_model == POWERPC_EXCP_BOOKE) {
+if (!msr_icm) {
+new_msr &= ~((target_ulong)1 << MSR_CM);
+vector = (uint32_t)vector;
+} else {
+new_msr |= (target_ulong)1 << MSR_CM;
+}
+} else {
+if (!msr_isf) {
+new_msr &= ~((target_ulong)1 << MSR_SF);
+vector = (uint32_t)vector;
+} else {
+new_msr |= (target_ulong)1 << MSR_SF;
+}
+}
+#endif
+/* XXX: we don't use hreg_store_msr here as already have treated
+*      any special case that could occur. Just store MSR and update hflags
+*/
+env->msr = new_msr & env->msr_mask;
+hreg_compute_hflags(env);
+env->nip = vector;
+/* Reset exception state */
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+}
+void do_interrupt (CPUState *env)
+{
+powerpc_excp(env, env->excp_model, env->exception_index);
+}
+void ppc_hw_interrupt (CPUPPCState *env)
+{
+int hdice;
+#if 0
+if (loglevel & CPU_LOG_INT) {
+fprintf(logfile, "%s: %p pending %08x req %08x me %d ee %d\n",
+__func__, env, env->pending_interrupts,
+env->interrupt_request, (int)msr_me, (int)msr_ee);
+}
+#endif
+/* External reset */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET);
+return;
+}
+/* Machine check exception */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK);
+return;
+}
+#if 0 /* TODO */
+/* External debug exception */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
+return;
+}
+#endif
+if (0) {
+/* XXX: find a suitable condition to enable the hypervisor mode */
+hdice = env->spr[SPR_LPCR] & 1;
+} else {
+hdice = 0;
+}
+if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
+/* Hypervisor decrementer exception */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR);
+return;
+}
+}
+if (msr_ce != 0) {
+/* External critical interrupt */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
+/* Taking a critical external interrupt does not clear the external
+* critical interrupt status
+*/
+#if 0
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
+#endif
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL);
+return;
+}
+}
+if (msr_ee != 0) {
+/* Watchdog timer on embedded PowerPC */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT);
+return;
+}
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI);
+return;
+}
+/* Fixed interval timer on embedded PowerPC */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT);
+return;
+}
+/* Programmable interval timer on embedded PowerPC */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT);
+return;
+}
+/* Decrementer exception */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR);
+return;
+}
+/* External interrupt */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
+/* Taking an external interrupt does not clear the external
+* interrupt status
+*/
+#if 0
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
+#endif
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL);
+return;
+}
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI);
+return;
+}
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM);
+return;
+}
+/* Thermal interrupt */
+if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
+env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
+powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM);
+return;
+}
+}
+}
+#endif /* !CONFIG_USER_ONLY */
+void cpu_dump_rfi (target_ulong RA, target_ulong msr)
+{
+FILE *f;
+if (logfile) {
+f = logfile;
+} else {
+f = stdout;
+return;
+}
+fprintf(f, "Return from exception at " ADDRX " with flags " ADDRX "\n",
+RA, msr);
+}
+void cpu_ppc_reset (void *opaque)
+{
+CPUPPCState *env;
+target_ulong msr;
+env = opaque;
+msr = (target_ulong)0;
+if (0) {
+/* XXX: find a suitable condition to enable the hypervisor mode */
+msr |= (target_ulong)MSR_HVB;
+}
+msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */
+msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */
+msr |= (target_ulong)1 << MSR_EP;
+#if defined (DO_SINGLE_STEP) && 0
+/* Single step trace mode */
+msr |= (target_ulong)1 << MSR_SE;
+msr |= (target_ulong)1 << MSR_BE;
+#endif
+#if defined(CONFIG_USER_ONLY)
+/* Initialize MSR with appropriate instruction capabilities.  */
+if (env->msr_mask & ((target_ulong)1 << MSR_FP))
+msr |= (target_ulong)1 << MSR_FP;
+if (env->msr_mask & ((target_ulong)1 << MSR_VR))
+msr |= (target_ulong)1 << MSR_VR;
+if (env->msr_mask & ((target_ulong)1 << MSR_SPE))
+msr |= (target_ulong)1 << MSR_SPE;
+msr |= (target_ulong)1 << MSR_VR; /* Allow altivec usage */
+msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
+msr |= (target_ulong)1 << MSR_PR;
+env->msr = msr & env->msr_mask;
+#else
+env->nip = env->hreset_vector | env->excp_prefix;
+if (env->mmu_model != POWERPC_MMU_REAL)
+ppc_tlb_invalidate_all(env);
+#endif
+hreg_compute_hflags(env);
+env->reserve = (target_ulong)-1ULL;
+/* Be sure no exception or interrupt is pending */
+env->pending_interrupts = 0;
+env->exception_index = POWERPC_EXCP_NONE;
+env->error_code = 0;
+/* Flush all TLBs */
+tlb_flush(env, 1);
+}
+CPUPPCState *cpu_ppc_init (const char *cpu_model)
+{
+CPUPPCState *env;
+const ppc_def_t *def;
+def = cpu_ppc_find_by_name(cpu_model);
+if (!def)
+return NULL;
+env = qemu_mallocz(sizeof(CPUPPCState));
+if (!env)
+return NULL;
+cpu_exec_init(env);
+ppc_translate_init();
+env->cpu_model_str = cpu_model;
+cpu_ppc_register_internal(env, def);
+cpu_ppc_reset(env);
+if (kvm_enabled())
+kvm_init_vcpu(env);
+return env;
+}
+void cpu_ppc_close (CPUPPCState *env)
+{
+/* Should also remove all opcode tables... */
+qemu_free(env);
+}