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/*
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* PowerPC emulation helpers for qemu.
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <signal.h> |
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#include <assert.h> |
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#include "cpu.h" |
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#include "exec-all.h" |
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//#define DEBUG_MMU
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//#define DEBUG_BATS
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//#define DEBUG_SOFTWARE_TLB
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//#define DEBUG_EXCEPTIONS
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//#define FLUSH_ALL_TLBS
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/*****************************************************************************/
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/* PowerPC MMU emulation */
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#if defined(CONFIG_USER_ONLY)
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int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
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int is_user, int is_softmmu) |
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{
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int exception, error_code;
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|
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if (rw == 2) { |
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exception = EXCP_ISI; |
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error_code = 0;
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} else {
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exception = EXCP_DSI; |
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error_code = 0;
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if (rw)
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error_code |= 0x02000000;
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env->spr[SPR_DAR] = address; |
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env->spr[SPR_DSISR] = error_code; |
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} |
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env->exception_index = exception; |
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env->error_code = error_code; |
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return 1; |
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} |
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target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr) |
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{
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return addr;
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} |
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#else
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/* Common routines used by software and hardware TLBs emulation */
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static inline int pte_is_valid (target_ulong pte0) |
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{
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return pte0 & 0x80000000 ? 1 : 0; |
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} |
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|
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static inline void pte_invalidate (target_ulong *pte0) |
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{
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*pte0 &= ~0x80000000;
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} |
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|
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#define PTE_PTEM_MASK 0x7FFFFFBF |
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#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) |
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static int pte_check (mmu_ctx_t *ctx, |
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target_ulong pte0, target_ulong pte1, int h, int rw) |
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{
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int access, ret;
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access = 0;
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ret = -1;
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/* Check validity and table match */
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if (pte_is_valid(pte0) && (h == ((pte0 >> 6) & 1))) { |
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/* Check vsid & api */
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if ((pte0 & PTE_PTEM_MASK) == ctx->ptem) {
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if (ctx->raddr != (target_ulong)-1) { |
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/* all matches should have equal RPN, WIMG & PP */
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if ((ctx->raddr & PTE_CHECK_MASK) != (pte1 & PTE_CHECK_MASK)) {
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if (loglevel > 0) |
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fprintf(logfile, "Bad RPN/WIMG/PP\n");
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return -3; |
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} |
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} |
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/* Compute access rights */
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if (ctx->key == 0) { |
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access = PAGE_READ; |
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if ((pte1 & 0x00000003) != 0x3) |
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access |= PAGE_WRITE; |
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} else {
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switch (pte1 & 0x00000003) { |
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case 0x0: |
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access = 0;
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break;
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case 0x1: |
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case 0x3: |
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access = PAGE_READ; |
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break;
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case 0x2: |
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access = PAGE_READ | PAGE_WRITE; |
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break;
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} |
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} |
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/* Keep the matching PTE informations */
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ctx->raddr = pte1; |
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ctx->prot = access; |
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if ((rw == 0 && (access & PAGE_READ)) || |
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(rw == 1 && (access & PAGE_WRITE))) {
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/* Access granted */
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#if defined (DEBUG_MMU)
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if (loglevel != 0) |
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fprintf(logfile, "PTE access granted !\n");
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#endif
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ret = 0;
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} else {
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/* Access right violation */
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#if defined (DEBUG_MMU)
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if (loglevel != 0) |
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fprintf(logfile, "PTE access rejected\n");
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#endif
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ret = -2;
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} |
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} |
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} |
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return ret;
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} |
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static int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p, |
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int ret, int rw) |
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{
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int store = 0; |
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/* Update page flags */
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if (!(*pte1p & 0x00000100)) { |
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/* Update accessed flag */
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*pte1p |= 0x00000100;
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store = 1;
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} |
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if (!(*pte1p & 0x00000080)) { |
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if (rw == 1 && ret == 0) { |
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/* Update changed flag */
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*pte1p |= 0x00000080;
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store = 1;
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} else {
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/* Force page fault for first write access */
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ctx->prot &= ~PAGE_WRITE; |
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} |
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} |
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return store;
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} |
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/* Software driven TLB helpers */
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static int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr, |
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int way, int is_code) |
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{
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int nr;
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/* Select TLB num in a way from address */
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nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
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/* Select TLB way */
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nr += env->tlb_per_way * way; |
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/* 6xx have separate TLBs for instructions and data */
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if (is_code && env->id_tlbs == 1) |
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nr += env->nb_tlb; |
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return nr;
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} |
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void ppc6xx_tlb_invalidate_all (CPUState *env)
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{
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ppc6xx_tlb_t *tlb; |
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int nr, max;
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#if defined (DEBUG_SOFTWARE_TLB) && 0 |
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if (loglevel != 0) { |
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fprintf(logfile, "Invalidate all TLBs\n");
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} |
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#endif
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/* Invalidate all defined software TLB */
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max = env->nb_tlb; |
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if (env->id_tlbs == 1) |
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max *= 2;
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for (nr = 0; nr < max; nr++) { |
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tlb = &env->tlb[nr].tlb6; |
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#if !defined(FLUSH_ALL_TLBS)
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tlb_flush_page(env, tlb->EPN); |
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#endif
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pte_invalidate(&tlb->pte0); |
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} |
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#if defined(FLUSH_ALL_TLBS)
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tlb_flush(env, 1);
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#endif
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} |
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static inline void __ppc6xx_tlb_invalidate_virt (CPUState *env, |
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target_ulong eaddr, |
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int is_code, int match_epn) |
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{
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#if !defined(FLUSH_ALL_TLBS)
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ppc6xx_tlb_t *tlb; |
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int way, nr;
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/* Invalidate ITLB + DTLB, all ways */
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for (way = 0; way < env->nb_ways; way++) { |
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nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); |
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tlb = &env->tlb[nr].tlb6; |
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if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { |
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) { |
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fprintf(logfile, "TLB invalidate %d/%d " ADDRX "\n", |
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nr, env->nb_tlb, eaddr); |
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} |
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#endif
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pte_invalidate(&tlb->pte0); |
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tlb_flush_page(env, tlb->EPN); |
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} |
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} |
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#else
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/* XXX: PowerPC specification say this is valid as well */
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ppc6xx_tlb_invalidate_all(env); |
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#endif
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} |
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|
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void ppc6xx_tlb_invalidate_virt (CPUState *env, target_ulong eaddr,
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int is_code)
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{
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__ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
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} |
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void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code, |
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target_ulong pte0, target_ulong pte1) |
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{
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ppc6xx_tlb_t *tlb; |
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int nr;
|
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|
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nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); |
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tlb = &env->tlb[nr].tlb6; |
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) { |
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fprintf(logfile, "Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX |
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" PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1); |
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} |
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#endif
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/* Invalidate any pending reference in Qemu for this virtual address */
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__ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
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tlb->pte0 = pte0; |
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tlb->pte1 = pte1; |
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tlb->EPN = EPN; |
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/* Store last way for LRU mechanism */
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env->last_way = way; |
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} |
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|
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static int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx, |
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target_ulong eaddr, int rw, int access_type) |
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{
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ppc6xx_tlb_t *tlb; |
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int nr, best, way;
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int ret;
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best = -1;
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ret = -1; /* No TLB found */ |
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for (way = 0; way < env->nb_ways; way++) { |
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nr = ppc6xx_tlb_getnum(env, eaddr, way, |
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access_type == ACCESS_CODE ? 1 : 0); |
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tlb = &env->tlb[nr].tlb6; |
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/* This test "emulates" the PTE index match for hardware TLBs */
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if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) { |
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fprintf(logfile, "TLB %d/%d %s [" ADDRX " " ADDRX |
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"] <> " ADDRX "\n", |
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nr, env->nb_tlb, |
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pte_is_valid(tlb->pte0) ? "valid" : "inval", |
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tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); |
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} |
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#endif
|
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continue;
|
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} |
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#if defined (DEBUG_SOFTWARE_TLB)
|
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if (loglevel != 0) { |
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fprintf(logfile, "TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX |
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" %c %c\n",
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nr, env->nb_tlb, |
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pte_is_valid(tlb->pte0) ? "valid" : "inval", |
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tlb->EPN, eaddr, tlb->pte1, |
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rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D'); |
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} |
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#endif
|
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switch (pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw)) { |
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case -3: |
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/* TLB inconsistency */
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return -1; |
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case -2: |
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/* Access violation */
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ret = -2;
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best = nr; |
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break;
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case -1: |
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default:
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/* No match */
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break;
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case 0: |
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/* access granted */
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/* XXX: we should go on looping to check all TLBs consistency
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* but we can speed-up the whole thing as the
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* result would be undefined if TLBs are not consistent.
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*/
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ret = 0;
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best = nr; |
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goto done;
|
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} |
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} |
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if (best != -1) { |
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done:
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#if defined (DEBUG_SOFTWARE_TLB)
|
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if (loglevel != 0) { |
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fprintf(logfile, "found TLB at addr 0x%08lx prot=0x%01x ret=%d\n",
|
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ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); |
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} |
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#endif
|
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/* Update page flags */
|
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pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw); |
| 341 |
} |
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|
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return ret;
|
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} |
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|
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/* Perform BAT hit & translation */
|
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static int get_bat (CPUState *env, mmu_ctx_t *ctx, |
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target_ulong virtual, int rw, int type) |
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{
|
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target_ulong *BATlt, *BATut, *BATu, *BATl; |
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target_ulong base, BEPIl, BEPIu, bl; |
| 352 |
int i;
|
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int ret = -1; |
| 354 |
|
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#if defined (DEBUG_BATS)
|
| 356 |
if (loglevel != 0) { |
| 357 |
fprintf(logfile, "%s: %cBAT v 0x" ADDRX "\n", __func__, |
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type == ACCESS_CODE ? 'I' : 'D', virtual); |
| 359 |
} |
| 360 |
#endif
|
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switch (type) {
|
| 362 |
case ACCESS_CODE:
|
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BATlt = env->IBAT[1];
|
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BATut = env->IBAT[0];
|
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break;
|
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default:
|
| 367 |
BATlt = env->DBAT[1];
|
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BATut = env->DBAT[0];
|
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break;
|
| 370 |
} |
| 371 |
#if defined (DEBUG_BATS)
|
| 372 |
if (loglevel != 0) { |
| 373 |
fprintf(logfile, "%s...: %cBAT v 0x" ADDRX "\n", __func__, |
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type == ACCESS_CODE ? 'I' : 'D', virtual); |
| 375 |
} |
| 376 |
#endif
|
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base = virtual & 0xFFFC0000;
|
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for (i = 0; i < 4; i++) { |
| 379 |
BATu = &BATut[i]; |
| 380 |
BATl = &BATlt[i]; |
| 381 |
BEPIu = *BATu & 0xF0000000;
|
| 382 |
BEPIl = *BATu & 0x0FFE0000;
|
| 383 |
bl = (*BATu & 0x00001FFC) << 15; |
| 384 |
#if defined (DEBUG_BATS)
|
| 385 |
if (loglevel != 0) { |
| 386 |
fprintf(logfile, "%s: %cBAT%d v 0x" ADDRX " BATu 0x" ADDRX |
| 387 |
" BATl 0x" ADDRX "\n", |
| 388 |
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, |
| 389 |
*BATu, *BATl); |
| 390 |
} |
| 391 |
#endif
|
| 392 |
if ((virtual & 0xF0000000) == BEPIu && |
| 393 |
((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
|
| 394 |
/* BAT matches */
|
| 395 |
if ((msr_pr == 0 && (*BATu & 0x00000002)) || |
| 396 |
(msr_pr == 1 && (*BATu & 0x00000001))) { |
| 397 |
/* Get physical address */
|
| 398 |
ctx->raddr = (*BATl & 0xF0000000) |
|
| 399 |
((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | |
| 400 |
(virtual & 0x0001F000);
|
| 401 |
if (*BATl & 0x00000001) |
| 402 |
ctx->prot = PAGE_READ; |
| 403 |
if (*BATl & 0x00000002) |
| 404 |
ctx->prot = PAGE_WRITE | PAGE_READ; |
| 405 |
#if defined (DEBUG_BATS)
|
| 406 |
if (loglevel != 0) { |
| 407 |
fprintf(logfile, "BAT %d match: r 0x" PADDRX
|
| 408 |
" prot=%c%c\n",
|
| 409 |
i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', |
| 410 |
ctx->prot & PAGE_WRITE ? 'W' : '-'); |
| 411 |
} |
| 412 |
#endif
|
| 413 |
ret = 0;
|
| 414 |
break;
|
| 415 |
} |
| 416 |
} |
| 417 |
} |
| 418 |
if (ret < 0) { |
| 419 |
#if defined (DEBUG_BATS)
|
| 420 |
if (loglevel != 0) { |
| 421 |
fprintf(logfile, "no BAT match for 0x" ADDRX ":\n", virtual); |
| 422 |
for (i = 0; i < 4; i++) { |
| 423 |
BATu = &BATut[i]; |
| 424 |
BATl = &BATlt[i]; |
| 425 |
BEPIu = *BATu & 0xF0000000;
|
| 426 |
BEPIl = *BATu & 0x0FFE0000;
|
| 427 |
bl = (*BATu & 0x00001FFC) << 15; |
| 428 |
fprintf(logfile, "%s: %cBAT%d v 0x" ADDRX " BATu 0x" ADDRX |
| 429 |
" BATl 0x" ADDRX " \n\t" |
| 430 |
"0x" ADDRX " 0x" ADDRX " 0x" ADDRX "\n", |
| 431 |
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, |
| 432 |
*BATu, *BATl, BEPIu, BEPIl, bl); |
| 433 |
} |
| 434 |
} |
| 435 |
#endif
|
| 436 |
} |
| 437 |
/* No hit */
|
| 438 |
return ret;
|
| 439 |
} |
| 440 |
|
| 441 |
/* PTE table lookup */
|
| 442 |
static int find_pte (mmu_ctx_t *ctx, int h, int rw) |
| 443 |
{
|
| 444 |
target_ulong base, pte0, pte1; |
| 445 |
int i, good = -1; |
| 446 |
int ret;
|
| 447 |
|
| 448 |
ret = -1; /* No entry found */ |
| 449 |
base = ctx->pg_addr[h]; |
| 450 |
for (i = 0; i < 8; i++) { |
| 451 |
pte0 = ldl_phys(base + (i * 8));
|
| 452 |
pte1 = ldl_phys(base + (i * 8) + 4); |
| 453 |
#if defined (DEBUG_MMU)
|
| 454 |
if (loglevel > 0) { |
| 455 |
fprintf(logfile, "Load pte from 0x" ADDRX " => 0x" ADDRX |
| 456 |
" 0x" ADDRX " %d %d %d 0x" ADDRX "\n", |
| 457 |
base + (i * 8), pte0, pte1,
|
| 458 |
pte0 >> 31, h, (pte0 >> 6) & 1, ctx->ptem); |
| 459 |
} |
| 460 |
#endif
|
| 461 |
switch (pte_check(ctx, pte0, pte1, h, rw)) {
|
| 462 |
case -3: |
| 463 |
/* PTE inconsistency */
|
| 464 |
return -1; |
| 465 |
case -2: |
| 466 |
/* Access violation */
|
| 467 |
ret = -2;
|
| 468 |
good = i; |
| 469 |
break;
|
| 470 |
case -1: |
| 471 |
default:
|
| 472 |
/* No PTE match */
|
| 473 |
break;
|
| 474 |
case 0: |
| 475 |
/* access granted */
|
| 476 |
/* XXX: we should go on looping to check all PTEs consistency
|
| 477 |
* but if we can speed-up the whole thing as the
|
| 478 |
* result would be undefined if PTEs are not consistent.
|
| 479 |
*/
|
| 480 |
ret = 0;
|
| 481 |
good = i; |
| 482 |
goto done;
|
| 483 |
} |
| 484 |
} |
| 485 |
if (good != -1) { |
| 486 |
done:
|
| 487 |
#if defined (DEBUG_MMU)
|
| 488 |
if (loglevel != 0) { |
| 489 |
fprintf(logfile, "found PTE at addr 0x" PADDRX " prot=0x%01x " |
| 490 |
"ret=%d\n",
|
| 491 |
ctx->raddr, ctx->prot, ret); |
| 492 |
} |
| 493 |
#endif
|
| 494 |
/* Update page flags */
|
| 495 |
pte1 = ctx->raddr; |
| 496 |
if (pte_update_flags(ctx, &pte1, ret, rw) == 1) |
| 497 |
stl_phys_notdirty(base + (good * 8) + 4, pte1); |
| 498 |
} |
| 499 |
|
| 500 |
return ret;
|
| 501 |
} |
| 502 |
|
| 503 |
static inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1, |
| 504 |
target_phys_addr_t hash, |
| 505 |
target_phys_addr_t mask) |
| 506 |
{
|
| 507 |
return (sdr1 & 0xFFFF0000) | (hash & mask); |
| 508 |
} |
| 509 |
|
| 510 |
/* Perform segment based translation */
|
| 511 |
static int get_segment (CPUState *env, mmu_ctx_t *ctx, |
| 512 |
target_ulong eaddr, int rw, int type) |
| 513 |
{
|
| 514 |
target_phys_addr_t sdr, hash, mask; |
| 515 |
target_ulong sr, vsid, pgidx; |
| 516 |
int ret = -1, ret2; |
| 517 |
|
| 518 |
sr = env->sr[eaddr >> 28];
|
| 519 |
#if defined (DEBUG_MMU)
|
| 520 |
if (loglevel > 0) { |
| 521 |
fprintf(logfile, "Check segment v=0x" ADDRX " %d 0x" ADDRX " nip=0x" |
| 522 |
ADDRX " lr=0x" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n", |
| 523 |
eaddr, eaddr >> 28, sr, env->nip,
|
| 524 |
env->lr, msr_ir, msr_dr, msr_pr, rw, type); |
| 525 |
} |
| 526 |
#endif
|
| 527 |
ctx->key = (((sr & 0x20000000) && msr_pr == 1) || |
| 528 |
((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0; |
| 529 |
if ((sr & 0x80000000) == 0) { |
| 530 |
#if defined (DEBUG_MMU)
|
| 531 |
if (loglevel > 0) |
| 532 |
fprintf(logfile, "pte segment: key=%d n=0x" ADDRX "\n", |
| 533 |
ctx->key, sr & 0x10000000);
|
| 534 |
#endif
|
| 535 |
/* Check if instruction fetch is allowed, if needed */
|
| 536 |
if (type != ACCESS_CODE || (sr & 0x10000000) == 0) { |
| 537 |
/* Page address translation */
|
| 538 |
pgidx = (eaddr >> TARGET_PAGE_BITS) & 0xFFFF;
|
| 539 |
vsid = sr & 0x00FFFFFF;
|
| 540 |
hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6; |
| 541 |
/* Primary table address */
|
| 542 |
sdr = env->sdr1; |
| 543 |
mask = ((sdr & 0x000001FF) << 16) | 0xFFC0; |
| 544 |
ctx->pg_addr[0] = get_pgaddr(sdr, hash, mask);
|
| 545 |
/* Secondary table address */
|
| 546 |
hash = (~hash) & 0x01FFFFC0;
|
| 547 |
ctx->pg_addr[1] = get_pgaddr(sdr, hash, mask);
|
| 548 |
ctx->ptem = (vsid << 7) | (pgidx >> 10); |
| 549 |
/* Initialize real address with an invalid value */
|
| 550 |
ctx->raddr = (target_ulong)-1;
|
| 551 |
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
| 552 |
/* Software TLB search */
|
| 553 |
ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type); |
| 554 |
} else {
|
| 555 |
#if defined (DEBUG_MMU)
|
| 556 |
if (loglevel != 0) { |
| 557 |
fprintf(logfile, "0 sdr1=0x" PADDRX " vsid=0x%06x " |
| 558 |
"api=0x%04x hash=0x%07x pg_addr=0x" PADDRX "\n", |
| 559 |
sdr, (uint32_t)vsid, (uint32_t)pgidx, |
| 560 |
(uint32_t)hash, ctx->pg_addr[0]);
|
| 561 |
} |
| 562 |
#endif
|
| 563 |
/* Primary table lookup */
|
| 564 |
ret = find_pte(ctx, 0, rw);
|
| 565 |
if (ret < 0) { |
| 566 |
/* Secondary table lookup */
|
| 567 |
#if defined (DEBUG_MMU)
|
| 568 |
if (eaddr != 0xEFFFFFFF && loglevel != 0) { |
| 569 |
fprintf(logfile, |
| 570 |
"1 sdr1=0x" PADDRX " vsid=0x%06x api=0x%04x " |
| 571 |
"hash=0x%05x pg_addr=0x" PADDRX "\n", |
| 572 |
sdr, (uint32_t)vsid, (uint32_t)pgidx, |
| 573 |
(uint32_t)hash, ctx->pg_addr[1]);
|
| 574 |
} |
| 575 |
#endif
|
| 576 |
ret2 = find_pte(ctx, 1, rw);
|
| 577 |
if (ret2 != -1) |
| 578 |
ret = ret2; |
| 579 |
} |
| 580 |
} |
| 581 |
} else {
|
| 582 |
#if defined (DEBUG_MMU)
|
| 583 |
if (loglevel != 0) |
| 584 |
fprintf(logfile, "No access allowed\n");
|
| 585 |
#endif
|
| 586 |
ret = -3;
|
| 587 |
} |
| 588 |
} else {
|
| 589 |
#if defined (DEBUG_MMU)
|
| 590 |
if (loglevel != 0) |
| 591 |
fprintf(logfile, "direct store...\n");
|
| 592 |
#endif
|
| 593 |
/* Direct-store segment : absolutely *BUGGY* for now */
|
| 594 |
switch (type) {
|
| 595 |
case ACCESS_INT:
|
| 596 |
/* Integer load/store : only access allowed */
|
| 597 |
break;
|
| 598 |
case ACCESS_CODE:
|
| 599 |
/* No code fetch is allowed in direct-store areas */
|
| 600 |
return -4; |
| 601 |
case ACCESS_FLOAT:
|
| 602 |
/* Floating point load/store */
|
| 603 |
return -4; |
| 604 |
case ACCESS_RES:
|
| 605 |
/* lwarx, ldarx or srwcx. */
|
| 606 |
return -4; |
| 607 |
case ACCESS_CACHE:
|
| 608 |
/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
|
| 609 |
/* Should make the instruction do no-op.
|
| 610 |
* As it already do no-op, it's quite easy :-)
|
| 611 |
*/
|
| 612 |
ctx->raddr = eaddr; |
| 613 |
return 0; |
| 614 |
case ACCESS_EXT:
|
| 615 |
/* eciwx or ecowx */
|
| 616 |
return -4; |
| 617 |
default:
|
| 618 |
if (logfile) {
|
| 619 |
fprintf(logfile, "ERROR: instruction should not need "
|
| 620 |
"address translation\n");
|
| 621 |
} |
| 622 |
return -4; |
| 623 |
} |
| 624 |
if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) { |
| 625 |
ctx->raddr = eaddr; |
| 626 |
ret = 2;
|
| 627 |
} else {
|
| 628 |
ret = -2;
|
| 629 |
} |
| 630 |
} |
| 631 |
|
| 632 |
return ret;
|
| 633 |
} |
| 634 |
|
| 635 |
/* Generic TLB check function for embedded PowerPC implementations */
|
| 636 |
static int ppcemb_tlb_check (CPUState *env, ppcemb_tlb_t *tlb, |
| 637 |
target_phys_addr_t *raddrp, |
| 638 |
target_ulong address, int i)
|
| 639 |
{
|
| 640 |
target_ulong mask; |
| 641 |
|
| 642 |
/* Check valid flag */
|
| 643 |
if (!(tlb->prot & PAGE_VALID)) {
|
| 644 |
if (loglevel != 0) |
| 645 |
fprintf(logfile, "%s: TLB %d not valid\n", __func__, i);
|
| 646 |
return -1; |
| 647 |
} |
| 648 |
mask = ~(tlb->size - 1);
|
| 649 |
if (loglevel != 0) { |
| 650 |
fprintf(logfile, "%s: TLB %d address " ADDRX " PID %d <=> " |
| 651 |
ADDRX " " ADDRX " %d\n", |
| 652 |
__func__, i, address, (int)env->spr[SPR_40x_PID],
|
| 653 |
tlb->EPN, mask, (int)tlb->PID);
|
| 654 |
} |
| 655 |
/* Check PID */
|
| 656 |
if (tlb->PID != 0 && tlb->PID != env->spr[SPR_40x_PID]) |
| 657 |
return -1; |
| 658 |
/* Check effective address */
|
| 659 |
if ((address & mask) != tlb->EPN)
|
| 660 |
return -1; |
| 661 |
*raddrp = (tlb->RPN & mask) | (address & ~mask); |
| 662 |
|
| 663 |
return 0; |
| 664 |
} |
| 665 |
|
| 666 |
/* Generic TLB search function for PowerPC embedded implementations */
|
| 667 |
int ppcemb_tlb_search (CPUState *env, target_ulong address)
|
| 668 |
{
|
| 669 |
ppcemb_tlb_t *tlb; |
| 670 |
target_phys_addr_t raddr; |
| 671 |
int i, ret;
|
| 672 |
|
| 673 |
/* Default return value is no match */
|
| 674 |
ret = -1;
|
| 675 |
for (i = 0; i < 64; i++) { |
| 676 |
tlb = &env->tlb[i].tlbe; |
| 677 |
if (ppcemb_tlb_check(env, tlb, &raddr, address, i) == 0) { |
| 678 |
ret = i; |
| 679 |
break;
|
| 680 |
} |
| 681 |
} |
| 682 |
|
| 683 |
return ret;
|
| 684 |
} |
| 685 |
|
| 686 |
/* Helpers specific to PowerPC 40x implementations */
|
| 687 |
void ppc4xx_tlb_invalidate_all (CPUState *env)
|
| 688 |
{
|
| 689 |
ppcemb_tlb_t *tlb; |
| 690 |
int i;
|
| 691 |
|
| 692 |
for (i = 0; i < env->nb_tlb; i++) { |
| 693 |
tlb = &env->tlb[i].tlbe; |
| 694 |
if (tlb->prot & PAGE_VALID) {
|
| 695 |
#if 0 // XXX: TLB have variable sizes then we flush all Qemu TLB.
|
| 696 |
end = tlb->EPN + tlb->size;
|
| 697 |
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
|
| 698 |
tlb_flush_page(env, page);
|
| 699 |
#endif
|
| 700 |
tlb->prot &= ~PAGE_VALID; |
| 701 |
} |
| 702 |
} |
| 703 |
tlb_flush(env, 1);
|
| 704 |
} |
| 705 |
|
| 706 |
int mmu4xx_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
|
| 707 |
target_ulong address, int rw, int access_type) |
| 708 |
{
|
| 709 |
ppcemb_tlb_t *tlb; |
| 710 |
target_phys_addr_t raddr; |
| 711 |
int i, ret, zsel, zpr;
|
| 712 |
|
| 713 |
ret = -1;
|
| 714 |
raddr = -1;
|
| 715 |
for (i = 0; i < env->nb_tlb; i++) { |
| 716 |
tlb = &env->tlb[i].tlbe; |
| 717 |
if (ppcemb_tlb_check(env, tlb, &raddr, address, i) < 0) |
| 718 |
continue;
|
| 719 |
zsel = (tlb->attr >> 4) & 0xF; |
| 720 |
zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3; |
| 721 |
if (loglevel != 0) { |
| 722 |
fprintf(logfile, "%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
|
| 723 |
__func__, i, zsel, zpr, rw, tlb->attr); |
| 724 |
} |
| 725 |
if (access_type == ACCESS_CODE) {
|
| 726 |
/* Check execute enable bit */
|
| 727 |
switch (zpr) {
|
| 728 |
case 0x2: |
| 729 |
if (msr_pr)
|
| 730 |
goto check_exec_perm;
|
| 731 |
goto exec_granted;
|
| 732 |
case 0x0: |
| 733 |
if (msr_pr) {
|
| 734 |
ctx->prot = 0;
|
| 735 |
ret = -3;
|
| 736 |
break;
|
| 737 |
} |
| 738 |
/* No break here */
|
| 739 |
case 0x1: |
| 740 |
check_exec_perm:
|
| 741 |
/* Check from TLB entry */
|
| 742 |
if (!(tlb->prot & PAGE_EXEC)) {
|
| 743 |
ret = -3;
|
| 744 |
} else {
|
| 745 |
if (tlb->prot & PAGE_WRITE) {
|
| 746 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
| 747 |
} else {
|
| 748 |
ctx->prot = PAGE_READ; |
| 749 |
} |
| 750 |
ret = 0;
|
| 751 |
} |
| 752 |
break;
|
| 753 |
case 0x3: |
| 754 |
exec_granted:
|
| 755 |
/* All accesses granted */
|
| 756 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
| 757 |
ret = 0;
|
| 758 |
break;
|
| 759 |
} |
| 760 |
} else {
|
| 761 |
switch (zpr) {
|
| 762 |
case 0x2: |
| 763 |
if (msr_pr)
|
| 764 |
goto check_rw_perm;
|
| 765 |
goto rw_granted;
|
| 766 |
case 0x0: |
| 767 |
if (msr_pr) {
|
| 768 |
ctx->prot = 0;
|
| 769 |
ret = -2;
|
| 770 |
break;
|
| 771 |
} |
| 772 |
/* No break here */
|
| 773 |
case 0x1: |
| 774 |
check_rw_perm:
|
| 775 |
/* Check from TLB entry */
|
| 776 |
/* Check write protection bit */
|
| 777 |
if (tlb->prot & PAGE_WRITE) {
|
| 778 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
| 779 |
ret = 0;
|
| 780 |
} else {
|
| 781 |
ctx->prot = PAGE_READ; |
| 782 |
if (rw)
|
| 783 |
ret = -2;
|
| 784 |
else
|
| 785 |
ret = 0;
|
| 786 |
} |
| 787 |
break;
|
| 788 |
case 0x3: |
| 789 |
rw_granted:
|
| 790 |
/* All accesses granted */
|
| 791 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
| 792 |
ret = 0;
|
| 793 |
break;
|
| 794 |
} |
| 795 |
} |
| 796 |
if (ret >= 0) { |
| 797 |
ctx->raddr = raddr; |
| 798 |
if (loglevel != 0) { |
| 799 |
fprintf(logfile, "%s: access granted " ADDRX " => " REGX |
| 800 |
" %d %d\n", __func__, address, ctx->raddr, ctx->prot,
|
| 801 |
ret); |
| 802 |
} |
| 803 |
return 0; |
| 804 |
} |
| 805 |
} |
| 806 |
if (loglevel != 0) { |
| 807 |
fprintf(logfile, "%s: access refused " ADDRX " => " REGX |
| 808 |
" %d %d\n", __func__, address, raddr, ctx->prot,
|
| 809 |
ret); |
| 810 |
} |
| 811 |
|
| 812 |
return ret;
|
| 813 |
} |
| 814 |
|
| 815 |
void store_40x_sler (CPUPPCState *env, uint32_t val)
|
| 816 |
{
|
| 817 |
/* XXX: TO BE FIXED */
|
| 818 |
if (val != 0x00000000) { |
| 819 |
cpu_abort(env, "Little-endian regions are not supported by now\n");
|
| 820 |
} |
| 821 |
env->spr[SPR_405_SLER] = val; |
| 822 |
} |
| 823 |
|
| 824 |
static int check_physical (CPUState *env, mmu_ctx_t *ctx, |
| 825 |
target_ulong eaddr, int rw)
|
| 826 |
{
|
| 827 |
int in_plb, ret;
|
| 828 |
|
| 829 |
ctx->raddr = eaddr; |
| 830 |
ctx->prot = PAGE_READ; |
| 831 |
ret = 0;
|
| 832 |
if (unlikely(msr_pe != 0 && PPC_MMU(env) == PPC_FLAGS_MMU_403)) { |
| 833 |
/* 403 family add some particular protections,
|
| 834 |
* using PBL/PBU registers for accesses with no translation.
|
| 835 |
*/
|
| 836 |
in_plb = |
| 837 |
/* Check PLB validity */
|
| 838 |
(env->pb[0] < env->pb[1] && |
| 839 |
/* and address in plb area */
|
| 840 |
eaddr >= env->pb[0] && eaddr < env->pb[1]) || |
| 841 |
(env->pb[2] < env->pb[3] && |
| 842 |
eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; |
| 843 |
if (in_plb ^ msr_px) {
|
| 844 |
/* Access in protected area */
|
| 845 |
if (rw == 1) { |
| 846 |
/* Access is not allowed */
|
| 847 |
ret = -2;
|
| 848 |
} |
| 849 |
} else {
|
| 850 |
/* Read-write access is allowed */
|
| 851 |
ctx->prot |= PAGE_WRITE; |
| 852 |
} |
| 853 |
} else {
|
| 854 |
ctx->prot |= PAGE_WRITE; |
| 855 |
} |
| 856 |
|
| 857 |
return ret;
|
| 858 |
} |
| 859 |
|
| 860 |
int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
|
| 861 |
int rw, int access_type, int check_BATs) |
| 862 |
{
|
| 863 |
int ret;
|
| 864 |
#if 0
|
| 865 |
if (loglevel != 0) {
|
| 866 |
fprintf(logfile, "%s\n", __func__);
|
| 867 |
}
|
| 868 |
#endif
|
| 869 |
if ((access_type == ACCESS_CODE && msr_ir == 0) || |
| 870 |
(access_type != ACCESS_CODE && msr_dr == 0)) {
|
| 871 |
/* No address translation */
|
| 872 |
ret = check_physical(env, ctx, eaddr, rw); |
| 873 |
} else {
|
| 874 |
ret = -1;
|
| 875 |
switch (PPC_MMU(env)) {
|
| 876 |
case PPC_FLAGS_MMU_32B:
|
| 877 |
case PPC_FLAGS_MMU_SOFT_6xx:
|
| 878 |
/* Try to find a BAT */
|
| 879 |
if (check_BATs)
|
| 880 |
ret = get_bat(env, ctx, eaddr, rw, access_type); |
| 881 |
/* No break here */
|
| 882 |
#if defined(TARGET_PPC64)
|
| 883 |
case PPC_FLAGS_MMU_64B:
|
| 884 |
case PPC_FLAGS_MMU_64BRIDGE:
|
| 885 |
#endif
|
| 886 |
if (ret < 0) { |
| 887 |
/* We didn't match any BAT entry or don't have BATs */
|
| 888 |
ret = get_segment(env, ctx, eaddr, rw, access_type); |
| 889 |
} |
| 890 |
break;
|
| 891 |
case PPC_FLAGS_MMU_SOFT_4xx:
|
| 892 |
case PPC_FLAGS_MMU_403:
|
| 893 |
ret = mmu4xx_get_physical_address(env, ctx, eaddr, |
| 894 |
rw, access_type); |
| 895 |
break;
|
| 896 |
case PPC_FLAGS_MMU_601:
|
| 897 |
/* XXX: TODO */
|
| 898 |
cpu_abort(env, "601 MMU model not implemented\n");
|
| 899 |
return -1; |
| 900 |
case PPC_FLAGS_MMU_BOOKE:
|
| 901 |
/* XXX: TODO */
|
| 902 |
cpu_abort(env, "BookeE MMU model not implemented\n");
|
| 903 |
return -1; |
| 904 |
case PPC_FLAGS_MMU_BOOKE_FSL:
|
| 905 |
/* XXX: TODO */
|
| 906 |
cpu_abort(env, "BookE FSL MMU model not implemented\n");
|
| 907 |
return -1; |
| 908 |
default:
|
| 909 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
| 910 |
return -1; |
| 911 |
} |
| 912 |
} |
| 913 |
#if 0
|
| 914 |
if (loglevel != 0) {
|
| 915 |
fprintf(logfile, "%s address " ADDRX " => %d " PADDRX "\n",
|
| 916 |
__func__, eaddr, ret, ctx->raddr);
|
| 917 |
}
|
| 918 |
#endif
|
| 919 |
|
| 920 |
return ret;
|
| 921 |
} |
| 922 |
|
| 923 |
target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr) |
| 924 |
{
|
| 925 |
mmu_ctx_t ctx; |
| 926 |
|
| 927 |
if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT, 1) != 0)) |
| 928 |
return -1; |
| 929 |
|
| 930 |
return ctx.raddr & TARGET_PAGE_MASK;
|
| 931 |
} |
| 932 |
|
| 933 |
/* Perform address translation */
|
| 934 |
int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
| 935 |
int is_user, int is_softmmu) |
| 936 |
{
|
| 937 |
mmu_ctx_t ctx; |
| 938 |
int exception = 0, error_code = 0; |
| 939 |
int access_type;
|
| 940 |
int ret = 0; |
| 941 |
|
| 942 |
if (rw == 2) { |
| 943 |
/* code access */
|
| 944 |
rw = 0;
|
| 945 |
access_type = ACCESS_CODE; |
| 946 |
} else {
|
| 947 |
/* data access */
|
| 948 |
/* XXX: put correct access by using cpu_restore_state()
|
| 949 |
correctly */
|
| 950 |
access_type = ACCESS_INT; |
| 951 |
// access_type = env->access_type;
|
| 952 |
} |
| 953 |
ret = get_physical_address(env, &ctx, address, rw, access_type, 1);
|
| 954 |
if (ret == 0) { |
| 955 |
ret = tlb_set_page(env, address & TARGET_PAGE_MASK, |
| 956 |
ctx.raddr & TARGET_PAGE_MASK, ctx.prot, |
| 957 |
is_user, is_softmmu); |
| 958 |
} else if (ret < 0) { |
| 959 |
#if defined (DEBUG_MMU)
|
| 960 |
if (loglevel != 0) |
| 961 |
cpu_dump_state(env, logfile, fprintf, 0);
|
| 962 |
#endif
|
| 963 |
if (access_type == ACCESS_CODE) {
|
| 964 |
exception = EXCP_ISI; |
| 965 |
switch (ret) {
|
| 966 |
case -1: |
| 967 |
/* No matches in page tables or TLB */
|
| 968 |
switch (PPC_MMU(env)) {
|
| 969 |
case PPC_FLAGS_MMU_SOFT_6xx:
|
| 970 |
exception = EXCP_I_TLBMISS; |
| 971 |
env->spr[SPR_IMISS] = address; |
| 972 |
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
|
| 973 |
error_code = 1 << 18; |
| 974 |
goto tlb_miss;
|
| 975 |
case PPC_FLAGS_MMU_SOFT_4xx:
|
| 976 |
case PPC_FLAGS_MMU_403:
|
| 977 |
exception = EXCP_40x_ITLBMISS; |
| 978 |
error_code = 0;
|
| 979 |
env->spr[SPR_40x_DEAR] = address; |
| 980 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
| 981 |
break;
|
| 982 |
case PPC_FLAGS_MMU_32B:
|
| 983 |
error_code = 0x40000000;
|
| 984 |
break;
|
| 985 |
#if defined(TARGET_PPC64)
|
| 986 |
case PPC_FLAGS_MMU_64B:
|
| 987 |
/* XXX: TODO */
|
| 988 |
cpu_abort(env, "MMU model not implemented\n");
|
| 989 |
return -1; |
| 990 |
case PPC_FLAGS_MMU_64BRIDGE:
|
| 991 |
/* XXX: TODO */
|
| 992 |
cpu_abort(env, "MMU model not implemented\n");
|
| 993 |
return -1; |
| 994 |
#endif
|
| 995 |
case PPC_FLAGS_MMU_601:
|
| 996 |
/* XXX: TODO */
|
| 997 |
cpu_abort(env, "MMU model not implemented\n");
|
| 998 |
return -1; |
| 999 |
case PPC_FLAGS_MMU_BOOKE:
|
| 1000 |
/* XXX: TODO */
|
| 1001 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1002 |
return -1; |
| 1003 |
case PPC_FLAGS_MMU_BOOKE_FSL:
|
| 1004 |
/* XXX: TODO */
|
| 1005 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1006 |
return -1; |
| 1007 |
default:
|
| 1008 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
| 1009 |
return -1; |
| 1010 |
} |
| 1011 |
break;
|
| 1012 |
case -2: |
| 1013 |
/* Access rights violation */
|
| 1014 |
error_code = 0x08000000;
|
| 1015 |
break;
|
| 1016 |
case -3: |
| 1017 |
/* No execute protection violation */
|
| 1018 |
error_code = 0x10000000;
|
| 1019 |
break;
|
| 1020 |
case -4: |
| 1021 |
/* Direct store exception */
|
| 1022 |
/* No code fetch is allowed in direct-store areas */
|
| 1023 |
error_code = 0x10000000;
|
| 1024 |
break;
|
| 1025 |
case -5: |
| 1026 |
/* No match in segment table */
|
| 1027 |
exception = EXCP_ISEG; |
| 1028 |
error_code = 0;
|
| 1029 |
break;
|
| 1030 |
} |
| 1031 |
} else {
|
| 1032 |
exception = EXCP_DSI; |
| 1033 |
switch (ret) {
|
| 1034 |
case -1: |
| 1035 |
/* No matches in page tables or TLB */
|
| 1036 |
switch (PPC_MMU(env)) {
|
| 1037 |
case PPC_FLAGS_MMU_SOFT_6xx:
|
| 1038 |
if (rw == 1) { |
| 1039 |
exception = EXCP_DS_TLBMISS; |
| 1040 |
error_code = 1 << 16; |
| 1041 |
} else {
|
| 1042 |
exception = EXCP_DL_TLBMISS; |
| 1043 |
error_code = 0;
|
| 1044 |
} |
| 1045 |
env->spr[SPR_DMISS] = address; |
| 1046 |
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
|
| 1047 |
tlb_miss:
|
| 1048 |
error_code |= ctx.key << 19;
|
| 1049 |
env->spr[SPR_HASH1] = ctx.pg_addr[0];
|
| 1050 |
env->spr[SPR_HASH2] = ctx.pg_addr[1];
|
| 1051 |
/* Do not alter DAR nor DSISR */
|
| 1052 |
goto out;
|
| 1053 |
case PPC_FLAGS_MMU_SOFT_4xx:
|
| 1054 |
case PPC_FLAGS_MMU_403:
|
| 1055 |
exception = EXCP_40x_DTLBMISS; |
| 1056 |
error_code = 0;
|
| 1057 |
env->spr[SPR_40x_DEAR] = address; |
| 1058 |
if (rw)
|
| 1059 |
env->spr[SPR_40x_ESR] = 0x00800000;
|
| 1060 |
else
|
| 1061 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
| 1062 |
break;
|
| 1063 |
case PPC_FLAGS_MMU_32B:
|
| 1064 |
error_code = 0x40000000;
|
| 1065 |
break;
|
| 1066 |
#if defined(TARGET_PPC64)
|
| 1067 |
case PPC_FLAGS_MMU_64B:
|
| 1068 |
/* XXX: TODO */
|
| 1069 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1070 |
return -1; |
| 1071 |
case PPC_FLAGS_MMU_64BRIDGE:
|
| 1072 |
/* XXX: TODO */
|
| 1073 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1074 |
return -1; |
| 1075 |
#endif
|
| 1076 |
case PPC_FLAGS_MMU_601:
|
| 1077 |
/* XXX: TODO */
|
| 1078 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1079 |
return -1; |
| 1080 |
case PPC_FLAGS_MMU_BOOKE:
|
| 1081 |
/* XXX: TODO */
|
| 1082 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1083 |
return -1; |
| 1084 |
case PPC_FLAGS_MMU_BOOKE_FSL:
|
| 1085 |
/* XXX: TODO */
|
| 1086 |
cpu_abort(env, "MMU model not implemented\n");
|
| 1087 |
return -1; |
| 1088 |
default:
|
| 1089 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
| 1090 |
return -1; |
| 1091 |
} |
| 1092 |
break;
|
| 1093 |
case -2: |
| 1094 |
/* Access rights violation */
|
| 1095 |
error_code = 0x08000000;
|
| 1096 |
break;
|
| 1097 |
case -4: |
| 1098 |
/* Direct store exception */
|
| 1099 |
switch (access_type) {
|
| 1100 |
case ACCESS_FLOAT:
|
| 1101 |
/* Floating point load/store */
|
| 1102 |
exception = EXCP_ALIGN; |
| 1103 |
error_code = EXCP_ALIGN_FP; |
| 1104 |
break;
|
| 1105 |
case ACCESS_RES:
|
| 1106 |
/* lwarx, ldarx or srwcx. */
|
| 1107 |
error_code = 0x04000000;
|
| 1108 |
break;
|
| 1109 |
case ACCESS_EXT:
|
| 1110 |
/* eciwx or ecowx */
|
| 1111 |
error_code = 0x04100000;
|
| 1112 |
break;
|
| 1113 |
default:
|
| 1114 |
printf("DSI: invalid exception (%d)\n", ret);
|
| 1115 |
exception = EXCP_PROGRAM; |
| 1116 |
error_code = EXCP_INVAL | EXCP_INVAL_INVAL; |
| 1117 |
break;
|
| 1118 |
} |
| 1119 |
break;
|
| 1120 |
case -5: |
| 1121 |
/* No match in segment table */
|
| 1122 |
exception = EXCP_DSEG; |
| 1123 |
error_code = 0;
|
| 1124 |
break;
|
| 1125 |
} |
| 1126 |
if (exception == EXCP_DSI && rw == 1) |
| 1127 |
error_code |= 0x02000000;
|
| 1128 |
/* Store fault address */
|
| 1129 |
env->spr[SPR_DAR] = address; |
| 1130 |
env->spr[SPR_DSISR] = error_code; |
| 1131 |
} |
| 1132 |
out:
|
| 1133 |
#if 0
|
| 1134 |
printf("%s: set exception to %d %02x\n",
|
| 1135 |
__func__, exception, error_code);
|
| 1136 |
#endif
|
| 1137 |
env->exception_index = exception; |
| 1138 |
env->error_code = error_code; |
| 1139 |
ret = 1;
|
| 1140 |
} |
| 1141 |
|
| 1142 |
return ret;
|
| 1143 |
} |
| 1144 |
|
| 1145 |
/*****************************************************************************/
|
| 1146 |
/* BATs management */
|
| 1147 |
#if !defined(FLUSH_ALL_TLBS)
|
| 1148 |
static inline void do_invalidate_BAT (CPUPPCState *env, |
| 1149 |
target_ulong BATu, target_ulong mask) |
| 1150 |
{
|
| 1151 |
target_ulong base, end, page; |
| 1152 |
|
| 1153 |
base = BATu & ~0x0001FFFF;
|
| 1154 |
end = base + mask + 0x00020000;
|
| 1155 |
#if defined (DEBUG_BATS)
|
| 1156 |
if (loglevel != 0) { |
| 1157 |
fprintf(logfile, "Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n", |
| 1158 |
base, end, mask); |
| 1159 |
} |
| 1160 |
#endif
|
| 1161 |
for (page = base; page != end; page += TARGET_PAGE_SIZE)
|
| 1162 |
tlb_flush_page(env, page); |
| 1163 |
#if defined (DEBUG_BATS)
|
| 1164 |
if (loglevel != 0) |
| 1165 |
fprintf(logfile, "Flush done\n");
|
| 1166 |
#endif
|
| 1167 |
} |
| 1168 |
#endif
|
| 1169 |
|
| 1170 |
static inline void dump_store_bat (CPUPPCState *env, char ID, int ul, int nr, |
| 1171 |
target_ulong value) |
| 1172 |
{
|
| 1173 |
#if defined (DEBUG_BATS)
|
| 1174 |
if (loglevel != 0) { |
| 1175 |
fprintf(logfile, "Set %cBAT%d%c to 0x" ADDRX " (0x" ADDRX ")\n", |
| 1176 |
ID, nr, ul == 0 ? 'u' : 'l', value, env->nip); |
| 1177 |
} |
| 1178 |
#endif
|
| 1179 |
} |
| 1180 |
|
| 1181 |
target_ulong do_load_ibatu (CPUPPCState *env, int nr)
|
| 1182 |
{
|
| 1183 |
return env->IBAT[0][nr]; |
| 1184 |
} |
| 1185 |
|
| 1186 |
target_ulong do_load_ibatl (CPUPPCState *env, int nr)
|
| 1187 |
{
|
| 1188 |
return env->IBAT[1][nr]; |
| 1189 |
} |
| 1190 |
|
| 1191 |
void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value) |
| 1192 |
{
|
| 1193 |
target_ulong mask; |
| 1194 |
|
| 1195 |
dump_store_bat(env, 'I', 0, nr, value); |
| 1196 |
if (env->IBAT[0][nr] != value) { |
| 1197 |
mask = (value << 15) & 0x0FFE0000UL; |
| 1198 |
#if !defined(FLUSH_ALL_TLBS)
|
| 1199 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
| 1200 |
#endif
|
| 1201 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
| 1202 |
* and invalidate all TLBs covered by this BAT
|
| 1203 |
*/
|
| 1204 |
mask = (value << 15) & 0x0FFE0000UL; |
| 1205 |
env->IBAT[0][nr] = (value & 0x00001FFFUL) | |
| 1206 |
(value & ~0x0001FFFFUL & ~mask);
|
| 1207 |
env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) | |
| 1208 |
(env->IBAT[1][nr] & ~0x0001FFFF & ~mask); |
| 1209 |
#if !defined(FLUSH_ALL_TLBS)
|
| 1210 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
| 1211 |
#else
|
| 1212 |
tlb_flush(env, 1);
|
| 1213 |
#endif
|
| 1214 |
} |
| 1215 |
} |
| 1216 |
|
| 1217 |
void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value) |
| 1218 |
{
|
| 1219 |
dump_store_bat(env, 'I', 1, nr, value); |
| 1220 |
env->IBAT[1][nr] = value;
|
| 1221 |
} |
| 1222 |
|
| 1223 |
target_ulong do_load_dbatu (CPUPPCState *env, int nr)
|
| 1224 |
{
|
| 1225 |
return env->DBAT[0][nr]; |
| 1226 |
} |
| 1227 |
|
| 1228 |
target_ulong do_load_dbatl (CPUPPCState *env, int nr)
|
| 1229 |
{
|
| 1230 |
return env->DBAT[1][nr]; |
| 1231 |
} |
| 1232 |
|
| 1233 |
void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value) |
| 1234 |
{
|
| 1235 |
target_ulong mask; |
| 1236 |
|
| 1237 |
dump_store_bat(env, 'D', 0, nr, value); |
| 1238 |
if (env->DBAT[0][nr] != value) { |
| 1239 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
| 1240 |
* and invalidate all TLBs covered by this BAT
|
| 1241 |
*/
|
| 1242 |
mask = (value << 15) & 0x0FFE0000UL; |
| 1243 |
#if !defined(FLUSH_ALL_TLBS)
|
| 1244 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
| 1245 |
#endif
|
| 1246 |
mask = (value << 15) & 0x0FFE0000UL; |
| 1247 |
env->DBAT[0][nr] = (value & 0x00001FFFUL) | |
| 1248 |
(value & ~0x0001FFFFUL & ~mask);
|
| 1249 |
env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) | |
| 1250 |
(env->DBAT[1][nr] & ~0x0001FFFF & ~mask); |
| 1251 |
#if !defined(FLUSH_ALL_TLBS)
|
| 1252 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
| 1253 |
#else
|
| 1254 |
tlb_flush(env, 1);
|
| 1255 |
#endif
|
| 1256 |
} |
| 1257 |
} |
| 1258 |
|
| 1259 |
void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value) |
| 1260 |
{
|
| 1261 |
dump_store_bat(env, 'D', 1, nr, value); |
| 1262 |
env->DBAT[1][nr] = value;
|
| 1263 |
} |
| 1264 |
|
| 1265 |
|
| 1266 |
/*****************************************************************************/
|
| 1267 |
/* TLB management */
|
| 1268 |
void ppc_tlb_invalidate_all (CPUPPCState *env)
|
| 1269 |
{
|
| 1270 |
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
| 1271 |
ppc6xx_tlb_invalidate_all(env); |
| 1272 |
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) { |
| 1273 |
ppc4xx_tlb_invalidate_all(env); |
| 1274 |
} else {
|
| 1275 |
tlb_flush(env, 1);
|
| 1276 |
} |
| 1277 |
} |
| 1278 |
|
| 1279 |
/*****************************************************************************/
|
| 1280 |
/* Special registers manipulation */
|
| 1281 |
#if defined(TARGET_PPC64)
|
| 1282 |
target_ulong ppc_load_asr (CPUPPCState *env) |
| 1283 |
{
|
| 1284 |
return env->asr;
|
| 1285 |
} |
| 1286 |
|
| 1287 |
void ppc_store_asr (CPUPPCState *env, target_ulong value)
|
| 1288 |
{
|
| 1289 |
if (env->asr != value) {
|
| 1290 |
env->asr = value; |
| 1291 |
tlb_flush(env, 1);
|
| 1292 |
} |
| 1293 |
} |
| 1294 |
#endif
|
| 1295 |
|
| 1296 |
target_ulong do_load_sdr1 (CPUPPCState *env) |
| 1297 |
{
|
| 1298 |
return env->sdr1;
|
| 1299 |
} |
| 1300 |
|
| 1301 |
void do_store_sdr1 (CPUPPCState *env, target_ulong value)
|
| 1302 |
{
|
| 1303 |
#if defined (DEBUG_MMU)
|
| 1304 |
if (loglevel != 0) { |
| 1305 |
fprintf(logfile, "%s: 0x" ADDRX "\n", __func__, value); |
| 1306 |
} |
| 1307 |
#endif
|
| 1308 |
if (env->sdr1 != value) {
|
| 1309 |
env->sdr1 = value; |
| 1310 |
tlb_flush(env, 1);
|
| 1311 |
} |
| 1312 |
} |
| 1313 |
|
| 1314 |
target_ulong do_load_sr (CPUPPCState *env, int srnum)
|
| 1315 |
{
|
| 1316 |
return env->sr[srnum];
|
| 1317 |
} |
| 1318 |
|
| 1319 |
void do_store_sr (CPUPPCState *env, int srnum, target_ulong value) |
| 1320 |
{
|
| 1321 |
#if defined (DEBUG_MMU)
|
| 1322 |
if (loglevel != 0) { |
| 1323 |
fprintf(logfile, "%s: reg=%d 0x" ADDRX " " ADDRX "\n", |
| 1324 |
__func__, srnum, value, env->sr[srnum]); |
| 1325 |
} |
| 1326 |
#endif
|
| 1327 |
if (env->sr[srnum] != value) {
|
| 1328 |
env->sr[srnum] = value; |
| 1329 |
#if !defined(FLUSH_ALL_TLBS) && 0 |
| 1330 |
{
|
| 1331 |
target_ulong page, end; |
| 1332 |
/* Invalidate 256 MB of virtual memory */
|
| 1333 |
page = (16 << 20) * srnum; |
| 1334 |
end = page + (16 << 20); |
| 1335 |
for (; page != end; page += TARGET_PAGE_SIZE)
|
| 1336 |
tlb_flush_page(env, page); |
| 1337 |
} |
| 1338 |
#else
|
| 1339 |
tlb_flush(env, 1);
|
| 1340 |
#endif
|
| 1341 |
} |
| 1342 |
} |
| 1343 |
#endif /* !defined (CONFIG_USER_ONLY) */ |
| 1344 |
|
| 1345 |
uint32_t ppc_load_xer (CPUPPCState *env) |
| 1346 |
{
|
| 1347 |
return (xer_so << XER_SO) |
|
| 1348 |
(xer_ov << XER_OV) | |
| 1349 |
(xer_ca << XER_CA) | |
| 1350 |
(xer_bc << XER_BC) | |
| 1351 |
(xer_cmp << XER_CMP); |
| 1352 |
} |
| 1353 |
|
| 1354 |
void ppc_store_xer (CPUPPCState *env, uint32_t value)
|
| 1355 |
{
|
| 1356 |
xer_so = (value >> XER_SO) & 0x01;
|
| 1357 |
xer_ov = (value >> XER_OV) & 0x01;
|
| 1358 |
xer_ca = (value >> XER_CA) & 0x01;
|
| 1359 |
xer_cmp = (value >> XER_CMP) & 0xFF;
|
| 1360 |
xer_bc = (value >> XER_BC) & 0x7F;
|
| 1361 |
} |
| 1362 |
|
| 1363 |
/* Swap temporary saved registers with GPRs */
|
| 1364 |
static inline void swap_gpr_tgpr (CPUPPCState *env) |
| 1365 |
{
|
| 1366 |
ppc_gpr_t tmp; |
| 1367 |
|
| 1368 |
tmp = env->gpr[0];
|
| 1369 |
env->gpr[0] = env->tgpr[0]; |
| 1370 |
env->tgpr[0] = tmp;
|
| 1371 |
tmp = env->gpr[1];
|
| 1372 |
env->gpr[1] = env->tgpr[1]; |
| 1373 |
env->tgpr[1] = tmp;
|
| 1374 |
tmp = env->gpr[2];
|
| 1375 |
env->gpr[2] = env->tgpr[2]; |
| 1376 |
env->tgpr[2] = tmp;
|
| 1377 |
tmp = env->gpr[3];
|
| 1378 |
env->gpr[3] = env->tgpr[3]; |
| 1379 |
env->tgpr[3] = tmp;
|
| 1380 |
} |
| 1381 |
|
| 1382 |
/* GDBstub can read and write MSR... */
|
| 1383 |
target_ulong do_load_msr (CPUPPCState *env) |
| 1384 |
{
|
| 1385 |
return
|
| 1386 |
#if defined (TARGET_PPC64)
|
| 1387 |
((target_ulong)msr_sf << MSR_SF) | |
| 1388 |
((target_ulong)msr_isf << MSR_ISF) | |
| 1389 |
((target_ulong)msr_hv << MSR_HV) | |
| 1390 |
#endif
|
| 1391 |
((target_ulong)msr_ucle << MSR_UCLE) | |
| 1392 |
((target_ulong)msr_vr << MSR_VR) | /* VR / SPE */
|
| 1393 |
((target_ulong)msr_ap << MSR_AP) | |
| 1394 |
((target_ulong)msr_sa << MSR_SA) | |
| 1395 |
((target_ulong)msr_key << MSR_KEY) | |
| 1396 |
((target_ulong)msr_pow << MSR_POW) | /* POW / WE */
|
| 1397 |
((target_ulong)msr_tlb << MSR_TLB) | /* TLB / TGPE / CE */
|
| 1398 |
((target_ulong)msr_ile << MSR_ILE) | |
| 1399 |
((target_ulong)msr_ee << MSR_EE) | |
| 1400 |
((target_ulong)msr_pr << MSR_PR) | |
| 1401 |
((target_ulong)msr_fp << MSR_FP) | |
| 1402 |
((target_ulong)msr_me << MSR_ME) | |
| 1403 |
((target_ulong)msr_fe0 << MSR_FE0) | |
| 1404 |
((target_ulong)msr_se << MSR_SE) | /* SE / DWE / UBLE */
|
| 1405 |
((target_ulong)msr_be << MSR_BE) | /* BE / DE */
|
| 1406 |
((target_ulong)msr_fe1 << MSR_FE1) | |
| 1407 |
((target_ulong)msr_al << MSR_AL) | |
| 1408 |
((target_ulong)msr_ip << MSR_IP) | |
| 1409 |
((target_ulong)msr_ir << MSR_IR) | /* IR / IS */
|
| 1410 |
((target_ulong)msr_dr << MSR_DR) | /* DR / DS */
|
| 1411 |
((target_ulong)msr_pe << MSR_PE) | /* PE / EP */
|
| 1412 |
((target_ulong)msr_px << MSR_PX) | /* PX / PMM */
|
| 1413 |
((target_ulong)msr_ri << MSR_RI) | |
| 1414 |
((target_ulong)msr_le << MSR_LE); |
| 1415 |
} |
| 1416 |
|
| 1417 |
void do_store_msr (CPUPPCState *env, target_ulong value)
|
| 1418 |
{
|
| 1419 |
int enter_pm;
|
| 1420 |
|
| 1421 |
value &= env->msr_mask; |
| 1422 |
if (((value >> MSR_IR) & 1) != msr_ir || |
| 1423 |
((value >> MSR_DR) & 1) != msr_dr) {
|
| 1424 |
/* Flush all tlb when changing translation mode */
|
| 1425 |
tlb_flush(env, 1);
|
| 1426 |
env->interrupt_request |= CPU_INTERRUPT_EXITTB; |
| 1427 |
} |
| 1428 |
#if 0
|
| 1429 |
if (loglevel != 0) {
|
| 1430 |
fprintf(logfile, "%s: T0 %08lx\n", __func__, value);
|
| 1431 |
}
|
| 1432 |
#endif
|
| 1433 |
switch (PPC_EXCP(env)) {
|
| 1434 |
case PPC_FLAGS_EXCP_602:
|
| 1435 |
case PPC_FLAGS_EXCP_603:
|
| 1436 |
if (((value >> MSR_TGPR) & 1) != msr_tgpr) { |
| 1437 |
/* Swap temporary saved registers with GPRs */
|
| 1438 |
swap_gpr_tgpr(env); |
| 1439 |
} |
| 1440 |
break;
|
| 1441 |
default:
|
| 1442 |
break;
|
| 1443 |
} |
| 1444 |
#if defined (TARGET_PPC64)
|
| 1445 |
msr_sf = (value >> MSR_SF) & 1;
|
| 1446 |
msr_isf = (value >> MSR_ISF) & 1;
|
| 1447 |
msr_hv = (value >> MSR_HV) & 1;
|
| 1448 |
#endif
|
| 1449 |
msr_ucle = (value >> MSR_UCLE) & 1;
|
| 1450 |
msr_vr = (value >> MSR_VR) & 1; /* VR / SPE */ |
| 1451 |
msr_ap = (value >> MSR_AP) & 1;
|
| 1452 |
msr_sa = (value >> MSR_SA) & 1;
|
| 1453 |
msr_key = (value >> MSR_KEY) & 1;
|
| 1454 |
msr_pow = (value >> MSR_POW) & 1; /* POW / WE */ |
| 1455 |
msr_tlb = (value >> MSR_TLB) & 1; /* TLB / TGPR / CE */ |
| 1456 |
msr_ile = (value >> MSR_ILE) & 1;
|
| 1457 |
msr_ee = (value >> MSR_EE) & 1;
|
| 1458 |
msr_pr = (value >> MSR_PR) & 1;
|
| 1459 |
msr_fp = (value >> MSR_FP) & 1;
|
| 1460 |
msr_me = (value >> MSR_ME) & 1;
|
| 1461 |
msr_fe0 = (value >> MSR_FE0) & 1;
|
| 1462 |
msr_se = (value >> MSR_SE) & 1; /* SE / DWE / UBLE */ |
| 1463 |
msr_be = (value >> MSR_BE) & 1; /* BE / DE */ |
| 1464 |
msr_fe1 = (value >> MSR_FE1) & 1;
|
| 1465 |
msr_al = (value >> MSR_AL) & 1;
|
| 1466 |
msr_ip = (value >> MSR_IP) & 1;
|
| 1467 |
msr_ir = (value >> MSR_IR) & 1; /* IR / IS */ |
| 1468 |
msr_dr = (value >> MSR_DR) & 1; /* DR / DS */ |
| 1469 |
msr_pe = (value >> MSR_PE) & 1; /* PE / EP */ |
| 1470 |
msr_px = (value >> MSR_PX) & 1; /* PX / PMM */ |
| 1471 |
msr_ri = (value >> MSR_RI) & 1;
|
| 1472 |
msr_le = (value >> MSR_LE) & 1;
|
| 1473 |
do_compute_hflags(env); |
| 1474 |
|
| 1475 |
enter_pm = 0;
|
| 1476 |
switch (PPC_EXCP(env)) {
|
| 1477 |
case PPC_FLAGS_EXCP_603:
|
| 1478 |
/* Don't handle SLEEP mode: we should disable all clocks...
|
| 1479 |
* No dynamic power-management.
|
| 1480 |
*/
|
| 1481 |
if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00C00000) != 0) |
| 1482 |
enter_pm = 1;
|
| 1483 |
break;
|
| 1484 |
case PPC_FLAGS_EXCP_604:
|
| 1485 |
if (msr_pow == 1) |
| 1486 |
enter_pm = 1;
|
| 1487 |
break;
|
| 1488 |
case PPC_FLAGS_EXCP_7x0:
|
| 1489 |
if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00E00000) != 0) |
| 1490 |
enter_pm = 1;
|
| 1491 |
break;
|
| 1492 |
default:
|
| 1493 |
break;
|
| 1494 |
} |
| 1495 |
if (enter_pm) {
|
| 1496 |
if (likely(!env->halted)) {
|
| 1497 |
/* power save: exit cpu loop */
|
| 1498 |
env->halted = 1;
|
| 1499 |
env->exception_index = EXCP_HLT; |
| 1500 |
cpu_loop_exit(); |
| 1501 |
} |
| 1502 |
} |
| 1503 |
} |
| 1504 |
|
| 1505 |
#if defined(TARGET_PPC64)
|
| 1506 |
void ppc_store_msr_32 (CPUPPCState *env, uint32_t value)
|
| 1507 |
{
|
| 1508 |
do_store_msr(env, |
| 1509 |
(do_load_msr(env) & ~0xFFFFFFFFULL) | (value & 0xFFFFFFFF)); |
| 1510 |
} |
| 1511 |
#endif
|
| 1512 |
|
| 1513 |
void do_compute_hflags (CPUPPCState *env)
|
| 1514 |
{
|
| 1515 |
/* Compute current hflags */
|
| 1516 |
env->hflags = (msr_cm << MSR_CM) | (msr_vr << MSR_VR) | |
| 1517 |
(msr_ap << MSR_AP) | (msr_sa << MSR_SA) | (msr_pr << MSR_PR) | |
| 1518 |
(msr_fp << MSR_FP) | (msr_fe0 << MSR_FE0) | (msr_se << MSR_SE) | |
| 1519 |
(msr_be << MSR_BE) | (msr_fe1 << MSR_FE1) | (msr_le << MSR_LE); |
| 1520 |
#if defined (TARGET_PPC64)
|
| 1521 |
/* No care here: PowerPC 64 MSR_SF means the same as MSR_CM for BookE */
|
| 1522 |
env->hflags |= (msr_sf << (MSR_SF - 32)) | (msr_hv << (MSR_HV - 32)); |
| 1523 |
#endif
|
| 1524 |
} |
| 1525 |
|
| 1526 |
/*****************************************************************************/
|
| 1527 |
/* Exception processing */
|
| 1528 |
#if defined (CONFIG_USER_ONLY)
|
| 1529 |
void do_interrupt (CPUState *env)
|
| 1530 |
{
|
| 1531 |
env->exception_index = -1;
|
| 1532 |
} |
| 1533 |
|
| 1534 |
void ppc_hw_interrupt (CPUState *env)
|
| 1535 |
{
|
| 1536 |
env->exception_index = -1;
|
| 1537 |
} |
| 1538 |
#else /* defined (CONFIG_USER_ONLY) */ |
| 1539 |
static void dump_syscall(CPUState *env) |
| 1540 |
{
|
| 1541 |
fprintf(logfile, "syscall r0=0x" REGX " r3=0x" REGX " r4=0x" REGX |
| 1542 |
" r5=0x" REGX " r6=0x" REGX " nip=0x" ADDRX "\n", |
| 1543 |
env->gpr[0], env->gpr[3], env->gpr[4], |
| 1544 |
env->gpr[5], env->gpr[6], env->nip); |
| 1545 |
} |
| 1546 |
|
| 1547 |
void do_interrupt (CPUState *env)
|
| 1548 |
{
|
| 1549 |
target_ulong msr, *srr_0, *srr_1, *asrr_0, *asrr_1; |
| 1550 |
int excp, idx;
|
| 1551 |
|
| 1552 |
excp = env->exception_index; |
| 1553 |
msr = do_load_msr(env); |
| 1554 |
/* The default is to use SRR0 & SRR1 to save the exception context */
|
| 1555 |
srr_0 = &env->spr[SPR_SRR0]; |
| 1556 |
srr_1 = &env->spr[SPR_SRR1]; |
| 1557 |
asrr_0 = NULL;
|
| 1558 |
asrr_1 = NULL;
|
| 1559 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1560 |
if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) { |
| 1561 |
if (loglevel != 0) { |
| 1562 |
fprintf(logfile, |
| 1563 |
"Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n", |
| 1564 |
env->nip, excp, env->error_code); |
| 1565 |
cpu_dump_state(env, logfile, fprintf, 0);
|
| 1566 |
} |
| 1567 |
} |
| 1568 |
#endif
|
| 1569 |
if (loglevel & CPU_LOG_INT) {
|
| 1570 |
fprintf(logfile, "Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n", |
| 1571 |
env->nip, excp, env->error_code); |
| 1572 |
} |
| 1573 |
msr_pow = 0;
|
| 1574 |
idx = -1;
|
| 1575 |
/* Generate informations in save/restore registers */
|
| 1576 |
switch (excp) {
|
| 1577 |
/* Generic PowerPC exceptions */
|
| 1578 |
case EXCP_RESET: /* 0x0100 */ |
| 1579 |
switch (PPC_EXCP(env)) {
|
| 1580 |
case PPC_FLAGS_EXCP_40x:
|
| 1581 |
srr_0 = &env->spr[SPR_40x_SRR2]; |
| 1582 |
srr_1 = &env->spr[SPR_40x_SRR3]; |
| 1583 |
break;
|
| 1584 |
case PPC_FLAGS_EXCP_BOOKE:
|
| 1585 |
idx = 0;
|
| 1586 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
| 1587 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
| 1588 |
break;
|
| 1589 |
default:
|
| 1590 |
if (msr_ip)
|
| 1591 |
excp += 0xFFC00;
|
| 1592 |
excp |= 0xFFC00000;
|
| 1593 |
break;
|
| 1594 |
} |
| 1595 |
goto store_next;
|
| 1596 |
case EXCP_MACHINE_CHECK: /* 0x0200 */ |
| 1597 |
switch (PPC_EXCP(env)) {
|
| 1598 |
case PPC_FLAGS_EXCP_40x:
|
| 1599 |
srr_0 = &env->spr[SPR_40x_SRR2]; |
| 1600 |
srr_1 = &env->spr[SPR_40x_SRR3]; |
| 1601 |
break;
|
| 1602 |
case PPC_FLAGS_EXCP_BOOKE:
|
| 1603 |
idx = 1;
|
| 1604 |
srr_0 = &env->spr[SPR_BOOKE_MCSRR0]; |
| 1605 |
srr_1 = &env->spr[SPR_BOOKE_MCSRR1]; |
| 1606 |
asrr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
| 1607 |
asrr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
| 1608 |
msr_ce = 0;
|
| 1609 |
break;
|
| 1610 |
default:
|
| 1611 |
break;
|
| 1612 |
} |
| 1613 |
msr_me = 0;
|
| 1614 |
break;
|
| 1615 |
case EXCP_DSI: /* 0x0300 */ |
| 1616 |
/* Store exception cause */
|
| 1617 |
/* data location address has been stored
|
| 1618 |
* when the fault has been detected
|
| 1619 |
*/
|
| 1620 |
idx = 2;
|
| 1621 |
msr &= ~0xFFFF0000;
|
| 1622 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1623 |
if (loglevel != 0) { |
| 1624 |
fprintf(logfile, "DSI exception: DSISR=0x" ADDRX" DAR=0x" ADDRX |
| 1625 |
"\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
|
| 1626 |
} |
| 1627 |
#endif
|
| 1628 |
goto store_next;
|
| 1629 |
case EXCP_ISI: /* 0x0400 */ |
| 1630 |
/* Store exception cause */
|
| 1631 |
idx = 3;
|
| 1632 |
msr &= ~0xFFFF0000;
|
| 1633 |
msr |= env->error_code; |
| 1634 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1635 |
if (loglevel != 0) { |
| 1636 |
fprintf(logfile, "ISI exception: msr=0x" ADDRX ", nip=0x" ADDRX |
| 1637 |
"\n", msr, env->nip);
|
| 1638 |
} |
| 1639 |
#endif
|
| 1640 |
goto store_next;
|
| 1641 |
case EXCP_EXTERNAL: /* 0x0500 */ |
| 1642 |
idx = 4;
|
| 1643 |
goto store_next;
|
| 1644 |
case EXCP_ALIGN: /* 0x0600 */ |
| 1645 |
if (likely(PPC_EXCP(env) != PPC_FLAGS_EXCP_601)) {
|
| 1646 |
/* Store exception cause */
|
| 1647 |
idx = 5;
|
| 1648 |
/* Get rS/rD and rA from faulting opcode */
|
| 1649 |
env->spr[SPR_DSISR] |= |
| 1650 |
(ldl_code((env->nip - 4)) & 0x03FF0000) >> 16; |
| 1651 |
/* data location address has been stored
|
| 1652 |
* when the fault has been detected
|
| 1653 |
*/
|
| 1654 |
} else {
|
| 1655 |
/* IO error exception on PowerPC 601 */
|
| 1656 |
/* XXX: TODO */
|
| 1657 |
cpu_abort(env, |
| 1658 |
"601 IO error exception is not implemented yet !\n");
|
| 1659 |
} |
| 1660 |
goto store_current;
|
| 1661 |
case EXCP_PROGRAM: /* 0x0700 */ |
| 1662 |
idx = 6;
|
| 1663 |
msr &= ~0xFFFF0000;
|
| 1664 |
switch (env->error_code & ~0xF) { |
| 1665 |
case EXCP_FP:
|
| 1666 |
if (msr_fe0 == 0 && msr_fe1 == 0) { |
| 1667 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1668 |
if (loglevel != 0) { |
| 1669 |
fprintf(logfile, "Ignore floating point exception\n");
|
| 1670 |
} |
| 1671 |
#endif
|
| 1672 |
return;
|
| 1673 |
} |
| 1674 |
msr |= 0x00100000;
|
| 1675 |
/* Set FX */
|
| 1676 |
env->fpscr[7] |= 0x8; |
| 1677 |
/* Finally, update FEX */
|
| 1678 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
| 1679 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
| 1680 |
env->fpscr[7] |= 0x4; |
| 1681 |
break;
|
| 1682 |
case EXCP_INVAL:
|
| 1683 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1684 |
if (loglevel != 0) { |
| 1685 |
fprintf(logfile, "Invalid instruction at 0x" ADDRX "\n", |
| 1686 |
env->nip); |
| 1687 |
} |
| 1688 |
#endif
|
| 1689 |
msr |= 0x00080000;
|
| 1690 |
break;
|
| 1691 |
case EXCP_PRIV:
|
| 1692 |
msr |= 0x00040000;
|
| 1693 |
break;
|
| 1694 |
case EXCP_TRAP:
|
| 1695 |
idx = 15;
|
| 1696 |
msr |= 0x00020000;
|
| 1697 |
break;
|
| 1698 |
default:
|
| 1699 |
/* Should never occur */
|
| 1700 |
break;
|
| 1701 |
} |
| 1702 |
msr |= 0x00010000;
|
| 1703 |
goto store_current;
|
| 1704 |
case EXCP_NO_FP: /* 0x0800 */ |
| 1705 |
idx = 7;
|
| 1706 |
msr &= ~0xFFFF0000;
|
| 1707 |
goto store_current;
|
| 1708 |
case EXCP_DECR:
|
| 1709 |
goto store_next;
|
| 1710 |
case EXCP_SYSCALL: /* 0x0C00 */ |
| 1711 |
idx = 8;
|
| 1712 |
/* NOTE: this is a temporary hack to support graphics OSI
|
| 1713 |
calls from the MOL driver */
|
| 1714 |
if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b && |
| 1715 |
env->osi_call) {
|
| 1716 |
if (env->osi_call(env) != 0) |
| 1717 |
return;
|
| 1718 |
} |
| 1719 |
if (loglevel & CPU_LOG_INT) {
|
| 1720 |
dump_syscall(env); |
| 1721 |
} |
| 1722 |
goto store_next;
|
| 1723 |
case EXCP_TRACE: /* 0x0D00 */ |
| 1724 |
goto store_next;
|
| 1725 |
case EXCP_PERF: /* 0x0F00 */ |
| 1726 |
/* XXX: TODO */
|
| 1727 |
cpu_abort(env, |
| 1728 |
"Performance counter exception is not implemented yet !\n");
|
| 1729 |
goto store_next;
|
| 1730 |
/* 32 bits PowerPC specific exceptions */
|
| 1731 |
case EXCP_FP_ASSIST: /* 0x0E00 */ |
| 1732 |
/* XXX: TODO */
|
| 1733 |
cpu_abort(env, "Floating point assist exception "
|
| 1734 |
"is not implemented yet !\n");
|
| 1735 |
goto store_next;
|
| 1736 |
/* 64 bits PowerPC exceptions */
|
| 1737 |
case EXCP_DSEG: /* 0x0380 */ |
| 1738 |
/* XXX: TODO */
|
| 1739 |
cpu_abort(env, "Data segment exception is not implemented yet !\n");
|
| 1740 |
goto store_next;
|
| 1741 |
case EXCP_ISEG: /* 0x0480 */ |
| 1742 |
/* XXX: TODO */
|
| 1743 |
cpu_abort(env, |
| 1744 |
"Instruction segment exception is not implemented yet !\n");
|
| 1745 |
goto store_next;
|
| 1746 |
case EXCP_HDECR: /* 0x0980 */ |
| 1747 |
/* XXX: TODO */
|
| 1748 |
cpu_abort(env, "Hypervisor decrementer exception is not implemented "
|
| 1749 |
"yet !\n");
|
| 1750 |
goto store_next;
|
| 1751 |
/* Implementation specific exceptions */
|
| 1752 |
case 0x0A00: |
| 1753 |
if (likely(env->spr[SPR_PVR] == CPU_PPC_G2 ||
|
| 1754 |
env->spr[SPR_PVR] == CPU_PPC_G2LE)) {
|
| 1755 |
/* Critical interrupt on G2 */
|
| 1756 |
/* XXX: TODO */
|
| 1757 |
cpu_abort(env, "G2 critical interrupt is not implemented yet !\n");
|
| 1758 |
goto store_next;
|
| 1759 |
} else {
|
| 1760 |
cpu_abort(env, "Invalid exception 0x0A00 !\n");
|
| 1761 |
} |
| 1762 |
return;
|
| 1763 |
case 0x0F20: |
| 1764 |
idx = 9;
|
| 1765 |
switch (PPC_EXCP(env)) {
|
| 1766 |
case PPC_FLAGS_EXCP_40x:
|
| 1767 |
/* APU unavailable on 405 */
|
| 1768 |
/* XXX: TODO */
|
| 1769 |
cpu_abort(env, |
| 1770 |
"APU unavailable exception is not implemented yet !\n");
|
| 1771 |
goto store_next;
|
| 1772 |
case PPC_FLAGS_EXCP_74xx:
|
| 1773 |
/* Altivec unavailable */
|
| 1774 |
/* XXX: TODO */
|
| 1775 |
cpu_abort(env, "Altivec unavailable exception "
|
| 1776 |
"is not implemented yet !\n");
|
| 1777 |
goto store_next;
|
| 1778 |
default:
|
| 1779 |
cpu_abort(env, "Invalid exception 0x0F20 !\n");
|
| 1780 |
break;
|
| 1781 |
} |
| 1782 |
return;
|
| 1783 |
case 0x1000: |
| 1784 |
idx = 10;
|
| 1785 |
switch (PPC_EXCP(env)) {
|
| 1786 |
case PPC_FLAGS_EXCP_40x:
|
| 1787 |
/* PIT on 4xx */
|
| 1788 |
msr &= ~0xFFFF0000;
|
| 1789 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1790 |
if (loglevel != 0) |
| 1791 |
fprintf(logfile, "PIT exception\n");
|
| 1792 |
#endif
|
| 1793 |
goto store_next;
|
| 1794 |
case PPC_FLAGS_EXCP_602:
|
| 1795 |
case PPC_FLAGS_EXCP_603:
|
| 1796 |
/* ITLBMISS on 602/603 */
|
| 1797 |
goto store_gprs;
|
| 1798 |
case PPC_FLAGS_EXCP_7x5:
|
| 1799 |
/* ITLBMISS on 745/755 */
|
| 1800 |
goto tlb_miss;
|
| 1801 |
default:
|
| 1802 |
cpu_abort(env, "Invalid exception 0x1000 !\n");
|
| 1803 |
break;
|
| 1804 |
} |
| 1805 |
return;
|
| 1806 |
case 0x1010: |
| 1807 |
idx = 11;
|
| 1808 |
switch (PPC_EXCP(env)) {
|
| 1809 |
case PPC_FLAGS_EXCP_40x:
|
| 1810 |
/* FIT on 4xx */
|
| 1811 |
msr &= ~0xFFFF0000;
|
| 1812 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1813 |
if (loglevel != 0) |
| 1814 |
fprintf(logfile, "FIT exception\n");
|
| 1815 |
#endif
|
| 1816 |
goto store_next;
|
| 1817 |
default:
|
| 1818 |
cpu_abort(env, "Invalid exception 0x1010 !\n");
|
| 1819 |
break;
|
| 1820 |
} |
| 1821 |
return;
|
| 1822 |
case 0x1020: |
| 1823 |
idx = 12;
|
| 1824 |
switch (PPC_EXCP(env)) {
|
| 1825 |
case PPC_FLAGS_EXCP_40x:
|
| 1826 |
/* Watchdog on 4xx */
|
| 1827 |
msr &= ~0xFFFF0000;
|
| 1828 |
#if defined (DEBUG_EXCEPTIONS)
|
| 1829 |
if (loglevel != 0) |
| 1830 |
fprintf(logfile, "WDT exception\n");
|
| 1831 |
#endif
|
| 1832 |
goto store_next;
|
| 1833 |
case PPC_FLAGS_EXCP_BOOKE:
|
| 1834 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
| 1835 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
| 1836 |
break;
|
| 1837 |
default:
|
| 1838 |
cpu_abort(env, "Invalid exception 0x1020 !\n");
|
| 1839 |
break;
|
| 1840 |
} |
| 1841 |
return;
|
| 1842 |
case 0x1100: |
| 1843 |
idx = 13;
|
| 1844 |
switch (PPC_EXCP(env)) {
|
| 1845 |
case PPC_FLAGS_EXCP_40x:
|
| 1846 |
/* DTLBMISS on 4xx */
|
| 1847 |
msr &= ~0xFFFF0000;
|
| 1848 |
goto store_next;
|
| 1849 |
case PPC_FLAGS_EXCP_602:
|
| 1850 |
case PPC_FLAGS_EXCP_603:
|
| 1851 |
/* DLTLBMISS on 602/603 */
|
| 1852 |
goto store_gprs;
|
| 1853 |
case PPC_FLAGS_EXCP_7x5:
|
| 1854 |
/* DLTLBMISS on 745/755 */
|
| 1855 |
goto tlb_miss;
|
| 1856 |
default:
|
| 1857 |
cpu_abort(env, "Invalid exception 0x1100 !\n");
|
| 1858 |
break;
|
| 1859 |
} |
| 1860 |
return;
|
| 1861 |
case 0x1200: |
| 1862 |
idx = 14;
|
| 1863 |
switch (PPC_EXCP(env)) {
|
| 1864 |
case PPC_FLAGS_EXCP_40x:
|
| 1865 |
/* ITLBMISS on 4xx */
|
| 1866 |
msr &= ~0xFFFF0000;
|
| 1867 |
goto store_next;
|
| 1868 |
case PPC_FLAGS_EXCP_602:
|
| 1869 |
case PPC_FLAGS_EXCP_603:
|
| 1870 |
/* DSTLBMISS on 602/603 */
|
| 1871 |
store_gprs:
|
| 1872 |
/* Swap temporary saved registers with GPRs */
|
| 1873 |
swap_gpr_tgpr(env); |
| 1874 |
msr_tgpr = 1;
|
| 1875 |
#if defined (DEBUG_SOFTWARE_TLB)
|
| 1876 |
if (loglevel != 0) { |
| 1877 |
const unsigned char *es; |
| 1878 |
target_ulong *miss, *cmp; |
| 1879 |
int en;
|
| 1880 |
if (excp == 0x1000) { |
| 1881 |
es = "I";
|
| 1882 |
en = 'I';
|
| 1883 |
miss = &env->spr[SPR_IMISS]; |
| 1884 |
cmp = &env->spr[SPR_ICMP]; |
| 1885 |
} else {
|
| 1886 |
if (excp == 0x1100) |
| 1887 |
es = "DL";
|
| 1888 |
else
|
| 1889 |
es = "DS";
|
| 1890 |
en = 'D';
|
| 1891 |
miss = &env->spr[SPR_DMISS]; |
| 1892 |
cmp = &env->spr[SPR_DCMP]; |
| 1893 |
} |
| 1894 |
fprintf(logfile, "6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX |
| 1895 |
" H1 " ADDRX " H2 " ADDRX " %08x\n", |
| 1896 |
es, en, *miss, en, *cmp, |
| 1897 |
env->spr[SPR_HASH1], env->spr[SPR_HASH2], |
| 1898 |
env->error_code); |
| 1899 |
} |
| 1900 |
#endif
|
| 1901 |
goto tlb_miss;
|
| 1902 |
case PPC_FLAGS_EXCP_7x5:
|
| 1903 |
/* DSTLBMISS on 745/755 */
|
| 1904 |
tlb_miss:
|
| 1905 |
msr &= ~0xF83F0000;
|
| 1906 |
msr |= env->crf[0] << 28; |
| 1907 |
msr |= env->error_code; /* key, D/I, S/L bits */
|
| 1908 |
/* Set way using a LRU mechanism */
|
| 1909 |
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17; |
| 1910 |
goto store_next;
|
| 1911 |
default:
|
| 1912 |
cpu_abort(env, "Invalid exception 0x1200 !\n");
|
| 1913 |
break;
|
| 1914 |
} |
| 1915 |
return;
|
| 1916 |
case 0x1300: |
| 1917 |
switch (PPC_EXCP(env)) {
|
| 1918 |
case PPC_FLAGS_EXCP_601:
|
| 1919 |
case PPC_FLAGS_EXCP_602:
|
| 1920 |
case PPC_FLAGS_EXCP_603:
|
| 1921 |
case PPC_FLAGS_EXCP_604:
|
| 1922 |
case PPC_FLAGS_EXCP_7x0:
|
| 1923 |
case PPC_FLAGS_EXCP_7x5:
|
| 1924 |
/* IABR on 6xx/7xx */
|
| 1925 |
/* XXX: TODO */
|
| 1926 |
cpu_abort(env, "IABR exception is not implemented yet !\n");
|
| 1927 |
goto store_next;
|
| 1928 |
default:
|
| 1929 |
cpu_abort(env, "Invalid exception 0x1300 !\n");
|
| 1930 |
break;
|
| 1931 |
} |
| 1932 |
return;
|
| 1933 |
case 0x1400: |
| 1934 |
switch (PPC_EXCP(env)) {
|
| 1935 |
case PPC_FLAGS_EXCP_601:
|
| 1936 |
case PPC_FLAGS_EXCP_602:
|
| 1937 |
case PPC_FLAGS_EXCP_603:
|
| 1938 |
case PPC_FLAGS_EXCP_604:
|
| 1939 |
case PPC_FLAGS_EXCP_7x0:
|
| 1940 |
case PPC_FLAGS_EXCP_7x5:
|
| 1941 |
/* SMI on 6xx/7xx */
|
| 1942 |
/* XXX: TODO */
|
| 1943 |
cpu_abort(env, "SMI exception is not implemented yet !\n");
|
| 1944 |
goto store_next;
|
| 1945 |
default:
|
| 1946 |
cpu_abort(env, "Invalid exception 0x1400 !\n");
|
| 1947 |
break;
|
| 1948 |
} |
| 1949 |
return;
|
| 1950 |
case 0x1500: |
| 1951 |
switch (PPC_EXCP(env)) {
|
| 1952 |
case PPC_FLAGS_EXCP_602:
|
| 1953 |
/* Watchdog on 602 */
|
| 1954 |
/* XXX: TODO */
|
| 1955 |
cpu_abort(env, |
| 1956 |
"602 watchdog exception is not implemented yet !\n");
|
| 1957 |
goto store_next;
|
| 1958 |
case PPC_FLAGS_EXCP_970:
|
| 1959 |
/* Soft patch exception on 970 */
|
| 1960 |
/* XXX: TODO */
|
| 1961 |
cpu_abort(env, |
| 1962 |
"970 soft-patch exception is not implemented yet !\n");
|
| 1963 |
goto store_next;
|
| 1964 |
case PPC_FLAGS_EXCP_74xx:
|
| 1965 |
/* VPU assist on 74xx */
|
| 1966 |
/* XXX: TODO */
|
| 1967 |
cpu_abort(env, "VPU assist exception is not implemented yet !\n");
|
| 1968 |
goto store_next;
|
| 1969 |
default:
|
| 1970 |
cpu_abort(env, "Invalid exception 0x1500 !\n");
|
| 1971 |
break;
|
| 1972 |
} |
| 1973 |
return;
|
| 1974 |
case 0x1600: |
| 1975 |
switch (PPC_EXCP(env)) {
|
| 1976 |
case PPC_FLAGS_EXCP_602:
|
| 1977 |
/* Emulation trap on 602 */
|
| 1978 |
/* XXX: TODO */
|
| 1979 |
cpu_abort(env, "602 emulation trap exception "
|
| 1980 |
"is not implemented yet !\n");
|
| 1981 |
goto store_next;
|
| 1982 |
case PPC_FLAGS_EXCP_970:
|
| 1983 |
/* Maintenance exception on 970 */
|
| 1984 |
/* XXX: TODO */
|
| 1985 |
cpu_abort(env, |
| 1986 |
"970 maintenance exception is not implemented yet !\n");
|
| 1987 |
goto store_next;
|
| 1988 |
default:
|
| 1989 |
cpu_abort(env, "Invalid exception 0x1600 !\n");
|
| 1990 |
break;
|
| 1991 |
} |
| 1992 |
return;
|
| 1993 |
case 0x1700: |
| 1994 |
switch (PPC_EXCP(env)) {
|
| 1995 |
case PPC_FLAGS_EXCP_7x0:
|
| 1996 |
case PPC_FLAGS_EXCP_7x5:
|
| 1997 |
/* Thermal management interrupt on G3 */
|
| 1998 |
/* XXX: TODO */
|
| 1999 |
cpu_abort(env, "G3 thermal management exception "
|
| 2000 |
"is not implemented yet !\n");
|
| 2001 |
goto store_next;
|
| 2002 |
case PPC_FLAGS_EXCP_970:
|
| 2003 |
/* VPU assist on 970 */
|
| 2004 |
/* XXX: TODO */
|
| 2005 |
cpu_abort(env, |
| 2006 |
"970 VPU assist exception is not implemented yet !\n");
|
| 2007 |
goto store_next;
|
| 2008 |
default:
|
| 2009 |
cpu_abort(env, "Invalid exception 0x1700 !\n");
|
| 2010 |
break;
|
| 2011 |
} |
| 2012 |
return;
|
| 2013 |
case 0x1800: |
| 2014 |
switch (PPC_EXCP(env)) {
|
| 2015 |
case PPC_FLAGS_EXCP_970:
|
| 2016 |
/* Thermal exception on 970 */
|
| 2017 |
/* XXX: TODO */
|
| 2018 |
cpu_abort(env, "970 thermal management exception "
|
| 2019 |
"is not implemented yet !\n");
|
| 2020 |
goto store_next;
|
| 2021 |
default:
|
| 2022 |
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
| 2023 |
break;
|
| 2024 |
} |
| 2025 |
return;
|
| 2026 |
case 0x2000: |
| 2027 |
switch (PPC_EXCP(env)) {
|
| 2028 |
case PPC_FLAGS_EXCP_40x:
|
| 2029 |
/* DEBUG on 4xx */
|
| 2030 |
/* XXX: TODO */
|
| 2031 |
cpu_abort(env, "40x debug exception is not implemented yet !\n");
|
| 2032 |
goto store_next;
|
| 2033 |
case PPC_FLAGS_EXCP_601:
|
| 2034 |
/* Run mode exception on 601 */
|
| 2035 |
/* XXX: TODO */
|
| 2036 |
cpu_abort(env, |
| 2037 |
"601 run mode exception is not implemented yet !\n");
|
| 2038 |
goto store_next;
|
| 2039 |
case PPC_FLAGS_EXCP_BOOKE:
|
| 2040 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
| 2041 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
| 2042 |
break;
|
| 2043 |
default:
|
| 2044 |
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
| 2045 |
break;
|
| 2046 |
} |
| 2047 |
return;
|
| 2048 |
/* Other exceptions */
|
| 2049 |
/* Qemu internal exceptions:
|
| 2050 |
* we should never come here with those values: abort execution
|
| 2051 |
*/
|
| 2052 |
default:
|
| 2053 |
cpu_abort(env, "Invalid exception: code %d (%04x)\n", excp, excp);
|
| 2054 |
return;
|
| 2055 |
store_current:
|
| 2056 |
/* save current instruction location */
|
| 2057 |
*srr_0 = env->nip - 4;
|
| 2058 |
break;
|
| 2059 |
store_next:
|
| 2060 |
/* save next instruction location */
|
| 2061 |
*srr_0 = env->nip; |
| 2062 |
break;
|
| 2063 |
} |
| 2064 |
/* Save msr */
|
| 2065 |
*srr_1 = msr; |
| 2066 |
if (asrr_0 != NULL) |
| 2067 |
*asrr_0 = *srr_0; |
| 2068 |
if (asrr_1 != NULL) |
| 2069 |
*asrr_1 = *srr_1; |
| 2070 |
/* If we disactivated any translation, flush TLBs */
|
| 2071 |
if (msr_ir || msr_dr) {
|
| 2072 |
tlb_flush(env, 1);
|
| 2073 |
} |
| 2074 |
/* reload MSR with correct bits */
|
| 2075 |
msr_ee = 0;
|
| 2076 |
msr_pr = 0;
|
| 2077 |
msr_fp = 0;
|
| 2078 |
msr_fe0 = 0;
|
| 2079 |
msr_se = 0;
|
| 2080 |
msr_be = 0;
|
| 2081 |
msr_fe1 = 0;
|
| 2082 |
msr_ir = 0;
|
| 2083 |
msr_dr = 0;
|
| 2084 |
msr_ri = 0;
|
| 2085 |
msr_le = msr_ile; |
| 2086 |
if (PPC_EXCP(env) == PPC_FLAGS_EXCP_BOOKE) {
|
| 2087 |
msr_cm = msr_icm; |
| 2088 |
if (idx == -1 || (idx >= 16 && idx < 32)) { |
| 2089 |
cpu_abort(env, "Invalid exception index for excp %d %08x idx %d\n",
|
| 2090 |
excp, excp, idx); |
| 2091 |
} |
| 2092 |
#if defined(TARGET_PPC64)
|
| 2093 |
if (msr_cm)
|
| 2094 |
env->nip = (uint64_t)env->spr[SPR_BOOKE_IVPR]; |
| 2095 |
else
|
| 2096 |
#endif
|
| 2097 |
env->nip = (uint32_t)env->spr[SPR_BOOKE_IVPR]; |
| 2098 |
if (idx < 16) |
| 2099 |
env->nip |= env->spr[SPR_BOOKE_IVOR0 + idx]; |
| 2100 |
else if (idx < 38) |
| 2101 |
env->nip |= env->spr[SPR_BOOKE_IVOR32 + idx - 32];
|
| 2102 |
} else {
|
| 2103 |
msr_sf = msr_isf; |
| 2104 |
env->nip = excp; |
| 2105 |
} |
| 2106 |
do_compute_hflags(env); |
| 2107 |
/* Jump to handler */
|
| 2108 |
env->exception_index = EXCP_NONE; |
| 2109 |
} |
| 2110 |
|
| 2111 |
void ppc_hw_interrupt (CPUPPCState *env)
|
| 2112 |
{
|
| 2113 |
int raised = 0; |
| 2114 |
|
| 2115 |
#if 1 |
| 2116 |
if (loglevel & CPU_LOG_INT) {
|
| 2117 |
fprintf(logfile, "%s: %p pending %08x req %08x me %d ee %d\n",
|
| 2118 |
__func__, env, env->pending_interrupts, |
| 2119 |
env->interrupt_request, msr_me, msr_ee); |
| 2120 |
} |
| 2121 |
#endif
|
| 2122 |
/* Raise it */
|
| 2123 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) { |
| 2124 |
/* External reset / critical input */
|
| 2125 |
/* XXX: critical input should be handled another way.
|
| 2126 |
* This code is not correct !
|
| 2127 |
*/
|
| 2128 |
env->exception_index = EXCP_RESET; |
| 2129 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
|
| 2130 |
raised = 1;
|
| 2131 |
} |
| 2132 |
if (raised == 0 && msr_me != 0) { |
| 2133 |
/* Machine check exception */
|
| 2134 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) { |
| 2135 |
env->exception_index = EXCP_MACHINE_CHECK; |
| 2136 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
|
| 2137 |
raised = 1;
|
| 2138 |
} |
| 2139 |
} |
| 2140 |
if (raised == 0 && msr_ee != 0) { |
| 2141 |
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */ |
| 2142 |
/* Hypervisor decrementer exception */
|
| 2143 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) { |
| 2144 |
env->exception_index = EXCP_HDECR; |
| 2145 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
|
| 2146 |
raised = 1;
|
| 2147 |
} else
|
| 2148 |
#endif
|
| 2149 |
/* Decrementer exception */
|
| 2150 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) { |
| 2151 |
env->exception_index = EXCP_DECR; |
| 2152 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
|
| 2153 |
raised = 1;
|
| 2154 |
/* Programmable interval timer on embedded PowerPC */
|
| 2155 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) { |
| 2156 |
env->exception_index = EXCP_40x_PIT; |
| 2157 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
|
| 2158 |
raised = 1;
|
| 2159 |
/* Fixed interval timer on embedded PowerPC */
|
| 2160 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) { |
| 2161 |
env->exception_index = EXCP_40x_FIT; |
| 2162 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
|
| 2163 |
raised = 1;
|
| 2164 |
/* Watchdog timer on embedded PowerPC */
|
| 2165 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) { |
| 2166 |
env->exception_index = EXCP_40x_WATCHDOG; |
| 2167 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
|
| 2168 |
raised = 1;
|
| 2169 |
/* External interrupt */
|
| 2170 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) { |
| 2171 |
env->exception_index = EXCP_EXTERNAL; |
| 2172 |
/* Taking an external interrupt does not clear the external
|
| 2173 |
* interrupt status
|
| 2174 |
*/
|
| 2175 |
#if 0
|
| 2176 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
|
| 2177 |
#endif
|
| 2178 |
raised = 1;
|
| 2179 |
#if 0 // TODO
|
| 2180 |
/* Thermal interrupt */
|
| 2181 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
|
| 2182 |
env->exception_index = EXCP_970_THRM;
|
| 2183 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
|
| 2184 |
raised = 1;
|
| 2185 |
#endif
|
| 2186 |
} |
| 2187 |
#if 0 // TODO
|
| 2188 |
/* External debug exception */
|
| 2189 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
|
| 2190 |
env->exception_index = EXCP_xxx;
|
| 2191 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
|
| 2192 |
raised = 1;
|
| 2193 |
#endif
|
| 2194 |
} |
| 2195 |
if (raised != 0) { |
| 2196 |
env->error_code = 0;
|
| 2197 |
do_interrupt(env); |
| 2198 |
} |
| 2199 |
} |
| 2200 |
#endif /* !CONFIG_USER_ONLY */ |
| 2201 |
|
| 2202 |
void cpu_dump_EA (target_ulong EA)
|
| 2203 |
{
|
| 2204 |
FILE *f; |
| 2205 |
|
| 2206 |
if (logfile) {
|
| 2207 |
f = logfile; |
| 2208 |
} else {
|
| 2209 |
f = stdout; |
| 2210 |
return;
|
| 2211 |
} |
| 2212 |
fprintf(f, "Memory access at address " ADDRX "\n", EA); |
| 2213 |
} |
| 2214 |
|
| 2215 |
void cpu_dump_rfi (target_ulong RA, target_ulong msr)
|
| 2216 |
{
|
| 2217 |
FILE *f; |
| 2218 |
|
| 2219 |
if (logfile) {
|
| 2220 |
f = logfile; |
| 2221 |
} else {
|
| 2222 |
f = stdout; |
| 2223 |
return;
|
| 2224 |
} |
| 2225 |
fprintf(f, "Return from exception at " ADDRX " with flags " ADDRX "\n", |
| 2226 |
RA, msr); |
| 2227 |
} |
| 2228 |
|
| 2229 |
void cpu_ppc_reset (void *opaque) |
| 2230 |
{
|
| 2231 |
CPUPPCState *env; |
| 2232 |
|
| 2233 |
env = opaque; |
| 2234 |
#if defined (DO_SINGLE_STEP) && 0 |
| 2235 |
/* Single step trace mode */
|
| 2236 |
msr_se = 1;
|
| 2237 |
msr_be = 1;
|
| 2238 |
#endif
|
| 2239 |
msr_fp = 1; /* Allow floating point exceptions */ |
| 2240 |
msr_me = 1; /* Allow machine check exceptions */ |
| 2241 |
#if defined(TARGET_PPC64)
|
| 2242 |
msr_sf = 0; /* Boot in 32 bits mode */ |
| 2243 |
msr_cm = 0;
|
| 2244 |
#endif
|
| 2245 |
#if defined(CONFIG_USER_ONLY)
|
| 2246 |
msr_pr = 1;
|
| 2247 |
tlb_flush(env, 1);
|
| 2248 |
#else
|
| 2249 |
env->nip = 0xFFFFFFFC;
|
| 2250 |
ppc_tlb_invalidate_all(env); |
| 2251 |
#endif
|
| 2252 |
do_compute_hflags(env); |
| 2253 |
env->reserve = -1;
|
| 2254 |
} |
| 2255 |
|
| 2256 |
CPUPPCState *cpu_ppc_init (void)
|
| 2257 |
{
|
| 2258 |
CPUPPCState *env; |
| 2259 |
|
| 2260 |
env = qemu_mallocz(sizeof(CPUPPCState));
|
| 2261 |
if (!env)
|
| 2262 |
return NULL; |
| 2263 |
cpu_exec_init(env); |
| 2264 |
cpu_ppc_reset(env); |
| 2265 |
|
| 2266 |
return env;
|
| 2267 |
} |
| 2268 |
|
| 2269 |
void cpu_ppc_close (CPUPPCState *env)
|
| 2270 |
{
|
| 2271 |
/* Should also remove all opcode tables... */
|
| 2272 |
free(env); |
| 2273 |
} |