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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, uint32_t 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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|
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target_ulong 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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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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#define PTE_PTEM_MASK 0x7FFFFFBF |
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#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) |
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|
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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; |
149 |
|
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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); |
205 |
#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) |
216 |
{ |
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ppc6xx_tlb_t *tlb; |
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int way, nr;
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#if !defined(FLUSH_ALL_TLBS)
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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)) { |
226 |
#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); |
234 |
} |
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} |
236 |
#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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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; |
252 |
int nr;
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|
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nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); |
255 |
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; |
267 |
/* Store last way for LRU mechanism */
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env->last_way = way; |
269 |
} |
270 |
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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) |
273 |
{ |
274 |
ppc6xx_tlb_t *tlb; |
275 |
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 */ |
280 |
for (way = 0; way < env->nb_ways; way++) { |
281 |
nr = ppc6xx_tlb_getnum(env, eaddr, way, |
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access_type == ACCESS_CODE ? 1 : 0); |
283 |
tlb = &env->tlb[nr].tlb6; |
284 |
/* 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) { |
288 |
fprintf(logfile, "TLB %d/%d %s [" ADDRX " " ADDRX |
289 |
"] <> " ADDRX "\n", |
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nr, env->nb_tlb, |
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pte_is_valid(tlb->pte0) ? "valid" : "inval", |
292 |
tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); |
293 |
} |
294 |
#endif
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continue;
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296 |
} |
297 |
#if defined (DEBUG_SOFTWARE_TLB)
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298 |
if (loglevel != 0) { |
299 |
fprintf(logfile, "TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX |
300 |
" %c %c\n",
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nr, env->nb_tlb, |
302 |
pte_is_valid(tlb->pte0) ? "valid" : "inval", |
303 |
tlb->EPN, eaddr, tlb->pte1, |
304 |
rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D'); |
305 |
} |
306 |
#endif
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307 |
switch (pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw)) { |
308 |
case -3: |
309 |
/* TLB inconsistency */
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310 |
return -1; |
311 |
case -2: |
312 |
/* Access violation */
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313 |
ret = -2;
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314 |
best = nr; |
315 |
break;
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316 |
case -1: |
317 |
default:
|
318 |
/* No match */
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319 |
break;
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320 |
case 0: |
321 |
/* access granted */
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322 |
/* XXX: we should go on looping to check all TLBs consistency
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323 |
* but we can speed-up the whole thing as the
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324 |
* result would be undefined if TLBs are not consistent.
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*/
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326 |
ret = 0;
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327 |
best = nr; |
328 |
goto done;
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329 |
} |
330 |
} |
331 |
if (best != -1) { |
332 |
done:
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333 |
#if defined (DEBUG_SOFTWARE_TLB)
|
334 |
if (loglevel > 0) { |
335 |
fprintf(logfile, "found TLB at addr 0x%08lx prot=0x%01x ret=%d\n",
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336 |
ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); |
337 |
} |
338 |
#endif
|
339 |
/* Update page flags */
|
340 |
pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw); |
341 |
} |
342 |
|
343 |
return ret;
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344 |
} |
345 |
|
346 |
/* Perform BAT hit & translation */
|
347 |
static int get_bat (CPUState *env, mmu_ctx_t *ctx, |
348 |
target_ulong virtual, int rw, int type) |
349 |
{ |
350 |
target_ulong *BATlt, *BATut, *BATu, *BATl; |
351 |
target_ulong base, BEPIl, BEPIu, bl; |
352 |
int i;
|
353 |
int ret = -1; |
354 |
|
355 |
#if defined (DEBUG_BATS)
|
356 |
if (loglevel > 0) { |
357 |
fprintf(logfile, "%s: %cBAT v 0x" ADDRX "\n", __func__, |
358 |
type == ACCESS_CODE ? 'I' : 'D', virtual); |
359 |
} |
360 |
#endif
|
361 |
switch (type) {
|
362 |
case ACCESS_CODE:
|
363 |
BATlt = env->IBAT[1];
|
364 |
BATut = env->IBAT[0];
|
365 |
break;
|
366 |
default:
|
367 |
BATlt = env->DBAT[1];
|
368 |
BATut = env->DBAT[0];
|
369 |
break;
|
370 |
} |
371 |
#if defined (DEBUG_BATS)
|
372 |
if (loglevel > 0) { |
373 |
fprintf(logfile, "%s...: %cBAT v 0x" ADDRX "\n", __func__, |
374 |
type == ACCESS_CODE ? 'I' : 'D', virtual); |
375 |
} |
376 |
#endif
|
377 |
base = virtual & 0xFFFC0000;
|
378 |
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" ADDRX
|
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 |
printf("no BAT match for 0x" ADDRX ":\n", virtual); |
421 |
for (i = 0; i < 4; i++) { |
422 |
BATu = &BATut[i]; |
423 |
BATl = &BATlt[i]; |
424 |
BEPIu = *BATu & 0xF0000000;
|
425 |
BEPIl = *BATu & 0x0FFE0000;
|
426 |
bl = (*BATu & 0x00001FFC) << 15; |
427 |
printf("%s: %cBAT%d v 0x" ADDRX " BATu 0x" ADDRX |
428 |
" BATl 0x" ADDRX " \n\t" |
429 |
"0x" ADDRX " 0x" ADDRX " 0x" ADDRX "\n", |
430 |
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, |
431 |
*BATu, *BATl, BEPIu, BEPIl, bl); |
432 |
} |
433 |
#endif
|
434 |
} |
435 |
/* No hit */
|
436 |
return ret;
|
437 |
} |
438 |
|
439 |
/* PTE table lookup */
|
440 |
static int find_pte (mmu_ctx_t *ctx, int h, int rw) |
441 |
{ |
442 |
target_ulong base, pte0, pte1; |
443 |
int i, good = -1; |
444 |
int ret;
|
445 |
|
446 |
ret = -1; /* No entry found */ |
447 |
base = ctx->pg_addr[h]; |
448 |
for (i = 0; i < 8; i++) { |
449 |
pte0 = ldl_phys(base + (i * 8));
|
450 |
pte1 = ldl_phys(base + (i * 8) + 4); |
451 |
#if defined (DEBUG_MMU)
|
452 |
if (loglevel > 0) { |
453 |
fprintf(logfile, "Load pte from 0x" ADDRX " => 0x" ADDRX |
454 |
" 0x" ADDRX " %d %d %d 0x" ADDRX "\n", |
455 |
base + (i * 8), pte0, pte1,
|
456 |
pte0 >> 31, h, (pte0 >> 6) & 1, ctx->ptem); |
457 |
} |
458 |
#endif
|
459 |
switch (pte_check(ctx, pte0, pte1, h, rw)) {
|
460 |
case -3: |
461 |
/* PTE inconsistency */
|
462 |
return -1; |
463 |
case -2: |
464 |
/* Access violation */
|
465 |
ret = -2;
|
466 |
good = i; |
467 |
break;
|
468 |
case -1: |
469 |
default:
|
470 |
/* No PTE match */
|
471 |
break;
|
472 |
case 0: |
473 |
/* access granted */
|
474 |
/* XXX: we should go on looping to check all PTEs consistency
|
475 |
* but if we can speed-up the whole thing as the
|
476 |
* result would be undefined if PTEs are not consistent.
|
477 |
*/
|
478 |
ret = 0;
|
479 |
good = i; |
480 |
goto done;
|
481 |
} |
482 |
} |
483 |
if (good != -1) { |
484 |
done:
|
485 |
#if defined (DEBUG_MMU)
|
486 |
if (loglevel > 0) { |
487 |
fprintf(logfile, "found PTE at addr 0x" ADDRX " prot=0x%01x " |
488 |
"ret=%d\n",
|
489 |
ctx->raddr, ctx->prot, ret); |
490 |
} |
491 |
#endif
|
492 |
/* Update page flags */
|
493 |
pte1 = ctx->raddr; |
494 |
if (pte_update_flags(ctx, &pte1, ret, rw) == 1) |
495 |
stl_phys_notdirty(base + (good * 8) + 4, pte1); |
496 |
} |
497 |
|
498 |
return ret;
|
499 |
} |
500 |
|
501 |
static inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1, |
502 |
target_phys_addr_t hash, |
503 |
target_phys_addr_t mask) |
504 |
{ |
505 |
return (sdr1 & 0xFFFF0000) | (hash & mask); |
506 |
} |
507 |
|
508 |
/* Perform segment based translation */
|
509 |
static int get_segment (CPUState *env, mmu_ctx_t *ctx, |
510 |
target_ulong eaddr, int rw, int type) |
511 |
{ |
512 |
target_phys_addr_t sdr, hash, mask; |
513 |
target_ulong sr, vsid, pgidx; |
514 |
int ret = -1, ret2; |
515 |
|
516 |
sr = env->sr[eaddr >> 28];
|
517 |
#if defined (DEBUG_MMU)
|
518 |
if (loglevel > 0) { |
519 |
fprintf(logfile, "Check segment v=0x" ADDRX " %d 0x" ADDRX " nip=0x" |
520 |
ADDRX " lr=0x" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n", |
521 |
eaddr, eaddr >> 28, sr, env->nip,
|
522 |
env->lr, msr_ir, msr_dr, msr_pr, rw, type); |
523 |
} |
524 |
#endif
|
525 |
ctx->key = (((sr & 0x20000000) && msr_pr == 1) || |
526 |
((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0; |
527 |
if ((sr & 0x80000000) == 0) { |
528 |
#if defined (DEBUG_MMU)
|
529 |
if (loglevel > 0) |
530 |
fprintf(logfile, "pte segment: key=%d n=0x" ADDRX "\n", |
531 |
ctx->key, sr & 0x10000000);
|
532 |
#endif
|
533 |
/* Check if instruction fetch is allowed, if needed */
|
534 |
if (type != ACCESS_CODE || (sr & 0x10000000) == 0) { |
535 |
/* Page address translation */
|
536 |
pgidx = (eaddr >> TARGET_PAGE_BITS) & 0xFFFF;
|
537 |
vsid = sr & 0x00FFFFFF;
|
538 |
hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6; |
539 |
/* Primary table address */
|
540 |
sdr = env->sdr1; |
541 |
mask = ((sdr & 0x000001FF) << 16) | 0xFFC0; |
542 |
ctx->pg_addr[0] = get_pgaddr(sdr, hash, mask);
|
543 |
/* Secondary table address */
|
544 |
hash = (~hash) & 0x01FFFFC0;
|
545 |
ctx->pg_addr[1] = get_pgaddr(sdr, hash, mask);
|
546 |
ctx->ptem = (vsid << 7) | (pgidx >> 10); |
547 |
/* Initialize real address with an invalid value */
|
548 |
ctx->raddr = (target_ulong)-1;
|
549 |
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
550 |
/* Software TLB search */
|
551 |
ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type); |
552 |
} else {
|
553 |
#if defined (DEBUG_MMU)
|
554 |
if (loglevel > 0) { |
555 |
fprintf(logfile, "0 sdr1=0x" ADDRX " vsid=0x%06x " |
556 |
"api=0x%04x hash=0x%07x pg_addr=0x" ADDRX "\n", |
557 |
sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
|
558 |
} |
559 |
#endif
|
560 |
/* Primary table lookup */
|
561 |
ret = find_pte(ctx, 0, rw);
|
562 |
if (ret < 0) { |
563 |
/* Secondary table lookup */
|
564 |
#if defined (DEBUG_MMU)
|
565 |
if (eaddr != 0xEFFFFFFF && loglevel > 0) { |
566 |
fprintf(logfile, |
567 |
"1 sdr1=0x" ADDRX " vsid=0x%06x api=0x%04x " |
568 |
"hash=0x%05x pg_addr=0x" ADDRX "\n", |
569 |
sdr, vsid, pgidx, hash, ctx->pg_addr[1]);
|
570 |
} |
571 |
#endif
|
572 |
ret2 = find_pte(ctx, 1, rw);
|
573 |
if (ret2 != -1) |
574 |
ret = ret2; |
575 |
} |
576 |
} |
577 |
} else {
|
578 |
#if defined (DEBUG_MMU)
|
579 |
if (loglevel > 0) |
580 |
fprintf(logfile, "No access allowed\n");
|
581 |
#endif
|
582 |
ret = -3;
|
583 |
} |
584 |
} else {
|
585 |
#if defined (DEBUG_MMU)
|
586 |
if (loglevel > 0) |
587 |
fprintf(logfile, "direct store...\n");
|
588 |
#endif
|
589 |
/* Direct-store segment : absolutely *BUGGY* for now */
|
590 |
switch (type) {
|
591 |
case ACCESS_INT:
|
592 |
/* Integer load/store : only access allowed */
|
593 |
break;
|
594 |
case ACCESS_CODE:
|
595 |
/* No code fetch is allowed in direct-store areas */
|
596 |
return -4; |
597 |
case ACCESS_FLOAT:
|
598 |
/* Floating point load/store */
|
599 |
return -4; |
600 |
case ACCESS_RES:
|
601 |
/* lwarx, ldarx or srwcx. */
|
602 |
return -4; |
603 |
case ACCESS_CACHE:
|
604 |
/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
|
605 |
/* Should make the instruction do no-op.
|
606 |
* As it already do no-op, it's quite easy :-)
|
607 |
*/
|
608 |
ctx->raddr = eaddr; |
609 |
return 0; |
610 |
case ACCESS_EXT:
|
611 |
/* eciwx or ecowx */
|
612 |
return -4; |
613 |
default:
|
614 |
if (logfile) {
|
615 |
fprintf(logfile, "ERROR: instruction should not need "
|
616 |
"address translation\n");
|
617 |
} |
618 |
printf("ERROR: instruction should not need "
|
619 |
"address translation\n");
|
620 |
return -4; |
621 |
} |
622 |
if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) { |
623 |
ctx->raddr = eaddr; |
624 |
ret = 2;
|
625 |
} else {
|
626 |
ret = -2;
|
627 |
} |
628 |
} |
629 |
|
630 |
return ret;
|
631 |
} |
632 |
|
633 |
int mmu4xx_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
|
634 |
uint32_t address, int rw, int access_type) |
635 |
{ |
636 |
ppcemb_tlb_t *tlb; |
637 |
target_phys_addr_t raddr; |
638 |
target_ulong mask; |
639 |
int i, ret, zsel, zpr;
|
640 |
|
641 |
ret = -6;
|
642 |
for (i = 0; i < env->nb_tlb; i++) { |
643 |
tlb = &env->tlb[i].tlbe; |
644 |
/* Check valid flag */
|
645 |
if (!(tlb->prot & PAGE_VALID)) {
|
646 |
if (loglevel)
|
647 |
fprintf(logfile, "%s: TLB %d not valid\n", __func__, i);
|
648 |
continue;
|
649 |
} |
650 |
mask = ~(tlb->size - 1);
|
651 |
if (loglevel) {
|
652 |
fprintf(logfile, "%s: TLB %d address %08x PID %04x <=> "
|
653 |
"%08x %08x %04x\n",
|
654 |
__func__, i, address, env->spr[SPR_40x_PID], |
655 |
tlb->EPN, mask, tlb->PID); |
656 |
} |
657 |
/* Check PID */
|
658 |
if (tlb->PID != 0 && tlb->PID != env->spr[SPR_40x_PID]) |
659 |
continue;
|
660 |
/* Check effective address */
|
661 |
if ((address & mask) != tlb->EPN)
|
662 |
continue;
|
663 |
raddr = (tlb->RPN & mask) | (address & ~mask); |
664 |
zsel = (tlb->attr >> 4) & 0xF; |
665 |
zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3; |
666 |
if (loglevel) {
|
667 |
fprintf(logfile, "%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
|
668 |
__func__, i, zsel, zpr, rw, tlb->attr); |
669 |
} |
670 |
if (access_type == ACCESS_CODE) {
|
671 |
/* Check execute enable bit */
|
672 |
switch (zpr) {
|
673 |
case 0x0: |
674 |
if (msr_pr) {
|
675 |
ret = -3;
|
676 |
ctx->prot = 0;
|
677 |
break;
|
678 |
} |
679 |
/* No break here */
|
680 |
case 0x1: |
681 |
case 0x2: |
682 |
/* Check from TLB entry */
|
683 |
if (!(tlb->prot & PAGE_EXEC)) {
|
684 |
ret = -3;
|
685 |
} else {
|
686 |
if (tlb->prot & PAGE_WRITE)
|
687 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
688 |
else
|
689 |
ctx->prot = PAGE_READ; |
690 |
ret = 0;
|
691 |
} |
692 |
break;
|
693 |
case 0x3: |
694 |
/* All accesses granted */
|
695 |
ret = 0;
|
696 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
697 |
break;
|
698 |
} |
699 |
} else {
|
700 |
switch (zpr) {
|
701 |
case 0x0: |
702 |
if (msr_pr) {
|
703 |
ret = -2;
|
704 |
ctx->prot = 0;
|
705 |
break;
|
706 |
} |
707 |
/* No break here */
|
708 |
case 0x1: |
709 |
case 0x2: |
710 |
/* Check from TLB entry */
|
711 |
/* Check write protection bit */
|
712 |
if (rw && !(tlb->prot & PAGE_WRITE)) {
|
713 |
ret = -2;
|
714 |
} else {
|
715 |
ret = 2;
|
716 |
if (tlb->prot & PAGE_WRITE)
|
717 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
718 |
else
|
719 |
ctx->prot = PAGE_READ; |
720 |
} |
721 |
break;
|
722 |
case 0x3: |
723 |
/* All accesses granted */
|
724 |
ret = 2;
|
725 |
ctx->prot = PAGE_READ | PAGE_WRITE; |
726 |
break;
|
727 |
} |
728 |
} |
729 |
if (ret >= 0) { |
730 |
ctx->raddr = raddr; |
731 |
if (loglevel) {
|
732 |
fprintf(logfile, "%s: access granted " ADDRX " => " REGX |
733 |
" %d\n", __func__, address, ctx->raddr, ctx->prot);
|
734 |
} |
735 |
return i;
|
736 |
} |
737 |
} |
738 |
|
739 |
return ret;
|
740 |
} |
741 |
|
742 |
static int check_physical (CPUState *env, mmu_ctx_t *ctx, |
743 |
target_ulong eaddr, int rw)
|
744 |
{ |
745 |
int in_plb, ret;
|
746 |
|
747 |
ctx->raddr = eaddr; |
748 |
ctx->prot = PAGE_READ; |
749 |
ret = 0;
|
750 |
if (unlikely(msr_pe != 0 && PPC_MMU(env) == PPC_FLAGS_MMU_403)) { |
751 |
/* 403 family add some particular protections,
|
752 |
* using PBL/PBU registers for accesses with no translation.
|
753 |
*/
|
754 |
in_plb = |
755 |
/* Check PLB validity */
|
756 |
(env->pb[0] < env->pb[1] && |
757 |
/* and address in plb area */
|
758 |
eaddr >= env->pb[0] && eaddr < env->pb[1]) || |
759 |
(env->pb[2] < env->pb[3] && |
760 |
eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; |
761 |
if (in_plb ^ msr_px) {
|
762 |
/* Access in protected area */
|
763 |
if (rw == 1) { |
764 |
/* Access is not allowed */
|
765 |
ret = -2;
|
766 |
} |
767 |
} else {
|
768 |
/* Read-write access is allowed */
|
769 |
ctx->prot |= PAGE_WRITE; |
770 |
} |
771 |
} else {
|
772 |
ctx->prot |= PAGE_WRITE; |
773 |
} |
774 |
|
775 |
return ret;
|
776 |
} |
777 |
|
778 |
int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
|
779 |
int rw, int access_type, int check_BATs) |
780 |
{ |
781 |
int ret;
|
782 |
#if 0
|
783 |
if (loglevel > 0) {
|
784 |
fprintf(logfile, "%s\n", __func__);
|
785 |
}
|
786 |
#endif
|
787 |
if ((access_type == ACCESS_CODE && msr_ir == 0) || |
788 |
(access_type != ACCESS_CODE && msr_dr == 0)) {
|
789 |
/* No address translation */
|
790 |
ret = check_physical(env, ctx, eaddr, rw); |
791 |
} else {
|
792 |
switch (PPC_MMU(env)) {
|
793 |
case PPC_FLAGS_MMU_32B:
|
794 |
case PPC_FLAGS_MMU_SOFT_6xx:
|
795 |
/* Try to find a BAT */
|
796 |
ret = -1;
|
797 |
if (check_BATs)
|
798 |
ret = get_bat(env, ctx, eaddr, rw, access_type); |
799 |
if (ret < 0) { |
800 |
/* We didn't match any BAT entry */
|
801 |
ret = get_segment(env, ctx, eaddr, rw, access_type); |
802 |
} |
803 |
break;
|
804 |
case PPC_FLAGS_MMU_SOFT_4xx:
|
805 |
ret = mmu4xx_get_physical_address(env, ctx, eaddr, |
806 |
rw, access_type); |
807 |
break;
|
808 |
default:
|
809 |
/* XXX: TODO */
|
810 |
cpu_abort(env, "MMU model not implemented\n");
|
811 |
return -1; |
812 |
} |
813 |
} |
814 |
#if 0
|
815 |
if (loglevel > 0) {
|
816 |
fprintf(logfile, "%s address " ADDRX " => " ADDRX "\n",
|
817 |
__func__, eaddr, ctx->raddr);
|
818 |
}
|
819 |
#endif
|
820 |
|
821 |
return ret;
|
822 |
} |
823 |
|
824 |
target_ulong cpu_get_phys_page_debug (CPUState *env, target_ulong addr) |
825 |
{ |
826 |
mmu_ctx_t ctx; |
827 |
|
828 |
if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT, 1) != 0)) |
829 |
return -1; |
830 |
|
831 |
return ctx.raddr & TARGET_PAGE_MASK;
|
832 |
} |
833 |
|
834 |
/* Perform address translation */
|
835 |
int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw, |
836 |
int is_user, int is_softmmu) |
837 |
{ |
838 |
mmu_ctx_t ctx; |
839 |
int exception = 0, error_code = 0; |
840 |
int access_type;
|
841 |
int ret = 0; |
842 |
|
843 |
if (rw == 2) { |
844 |
/* code access */
|
845 |
rw = 0;
|
846 |
access_type = ACCESS_CODE; |
847 |
} else {
|
848 |
/* data access */
|
849 |
/* XXX: put correct access by using cpu_restore_state()
|
850 |
correctly */
|
851 |
access_type = ACCESS_INT; |
852 |
// access_type = env->access_type;
|
853 |
} |
854 |
ret = get_physical_address(env, &ctx, address, rw, access_type, 1);
|
855 |
if (ret == 0) { |
856 |
ret = tlb_set_page(env, address & TARGET_PAGE_MASK, |
857 |
ctx.raddr & TARGET_PAGE_MASK, ctx.prot, |
858 |
is_user, is_softmmu); |
859 |
} else if (ret < 0) { |
860 |
#if defined (DEBUG_MMU)
|
861 |
if (loglevel > 0) |
862 |
cpu_dump_state(env, logfile, fprintf, 0);
|
863 |
#endif
|
864 |
if (access_type == ACCESS_CODE) {
|
865 |
exception = EXCP_ISI; |
866 |
switch (ret) {
|
867 |
case -1: |
868 |
/* No matches in page tables or TLB */
|
869 |
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
870 |
exception = EXCP_I_TLBMISS; |
871 |
env->spr[SPR_IMISS] = address; |
872 |
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
|
873 |
error_code = 1 << 18; |
874 |
goto tlb_miss;
|
875 |
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) { |
876 |
exception = EXCP_40x_ITLBMISS; |
877 |
error_code = 0;
|
878 |
env->spr[SPR_40x_DEAR] = address; |
879 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
880 |
} else {
|
881 |
error_code = 0x40000000;
|
882 |
} |
883 |
break;
|
884 |
case -2: |
885 |
/* Access rights violation */
|
886 |
error_code = 0x08000000;
|
887 |
break;
|
888 |
case -3: |
889 |
/* No execute protection violation */
|
890 |
error_code = 0x10000000;
|
891 |
break;
|
892 |
case -4: |
893 |
/* Direct store exception */
|
894 |
/* No code fetch is allowed in direct-store areas */
|
895 |
error_code = 0x10000000;
|
896 |
break;
|
897 |
case -5: |
898 |
/* No match in segment table */
|
899 |
exception = EXCP_ISEG; |
900 |
error_code = 0;
|
901 |
break;
|
902 |
} |
903 |
} else {
|
904 |
exception = EXCP_DSI; |
905 |
switch (ret) {
|
906 |
case -1: |
907 |
/* No matches in page tables or TLB */
|
908 |
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
909 |
if (rw == 1) { |
910 |
exception = EXCP_DS_TLBMISS; |
911 |
error_code = 1 << 16; |
912 |
} else {
|
913 |
exception = EXCP_DL_TLBMISS; |
914 |
error_code = 0;
|
915 |
} |
916 |
env->spr[SPR_DMISS] = address; |
917 |
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
|
918 |
tlb_miss:
|
919 |
error_code |= ctx.key << 19;
|
920 |
env->spr[SPR_HASH1] = ctx.pg_addr[0];
|
921 |
env->spr[SPR_HASH2] = ctx.pg_addr[1];
|
922 |
/* Do not alter DAR nor DSISR */
|
923 |
goto out;
|
924 |
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) { |
925 |
exception = EXCP_40x_DTLBMISS; |
926 |
error_code = 0;
|
927 |
env->spr[SPR_40x_DEAR] = address; |
928 |
if (rw)
|
929 |
env->spr[SPR_40x_ESR] = 0x00800000;
|
930 |
else
|
931 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
932 |
} else {
|
933 |
error_code = 0x40000000;
|
934 |
} |
935 |
break;
|
936 |
case -2: |
937 |
/* Access rights violation */
|
938 |
error_code = 0x08000000;
|
939 |
break;
|
940 |
case -4: |
941 |
/* Direct store exception */
|
942 |
switch (access_type) {
|
943 |
case ACCESS_FLOAT:
|
944 |
/* Floating point load/store */
|
945 |
exception = EXCP_ALIGN; |
946 |
error_code = EXCP_ALIGN_FP; |
947 |
break;
|
948 |
case ACCESS_RES:
|
949 |
/* lwarx, ldarx or srwcx. */
|
950 |
error_code = 0x04000000;
|
951 |
break;
|
952 |
case ACCESS_EXT:
|
953 |
/* eciwx or ecowx */
|
954 |
error_code = 0x04100000;
|
955 |
break;
|
956 |
default:
|
957 |
printf("DSI: invalid exception (%d)\n", ret);
|
958 |
exception = EXCP_PROGRAM; |
959 |
error_code = EXCP_INVAL | EXCP_INVAL_INVAL; |
960 |
break;
|
961 |
} |
962 |
break;
|
963 |
case -5: |
964 |
/* No match in segment table */
|
965 |
exception = EXCP_DSEG; |
966 |
error_code = 0;
|
967 |
break;
|
968 |
} |
969 |
if (exception == EXCP_DSI && rw == 1) |
970 |
error_code |= 0x02000000;
|
971 |
/* Store fault address */
|
972 |
env->spr[SPR_DAR] = address; |
973 |
env->spr[SPR_DSISR] = error_code; |
974 |
} |
975 |
out:
|
976 |
#if 0
|
977 |
printf("%s: set exception to %d %02x\n",
|
978 |
__func__, exception, error_code);
|
979 |
#endif
|
980 |
env->exception_index = exception; |
981 |
env->error_code = error_code; |
982 |
ret = 1;
|
983 |
} |
984 |
|
985 |
return ret;
|
986 |
} |
987 |
|
988 |
/*****************************************************************************/
|
989 |
/* BATs management */
|
990 |
#if !defined(FLUSH_ALL_TLBS)
|
991 |
static inline void do_invalidate_BAT (CPUPPCState *env, |
992 |
target_ulong BATu, target_ulong mask) |
993 |
{ |
994 |
target_ulong base, end, page; |
995 |
|
996 |
base = BATu & ~0x0001FFFF;
|
997 |
end = base + mask + 0x00020000;
|
998 |
#if defined (DEBUG_BATS)
|
999 |
if (loglevel != 0) { |
1000 |
fprintf(logfile, "Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n", |
1001 |
base, end, mask); |
1002 |
} |
1003 |
#endif
|
1004 |
for (page = base; page != end; page += TARGET_PAGE_SIZE)
|
1005 |
tlb_flush_page(env, page); |
1006 |
#if defined (DEBUG_BATS)
|
1007 |
if (loglevel != 0) |
1008 |
fprintf(logfile, "Flush done\n");
|
1009 |
#endif
|
1010 |
} |
1011 |
#endif
|
1012 |
|
1013 |
static inline void dump_store_bat (CPUPPCState *env, char ID, int ul, int nr, |
1014 |
target_ulong value) |
1015 |
{ |
1016 |
#if defined (DEBUG_BATS)
|
1017 |
if (loglevel != 0) { |
1018 |
fprintf(logfile, "Set %cBAT%d%c to 0x" ADDRX " (0x" ADDRX ")\n", |
1019 |
ID, nr, ul == 0 ? 'u' : 'l', value, env->nip); |
1020 |
} |
1021 |
#endif
|
1022 |
} |
1023 |
|
1024 |
target_ulong do_load_ibatu (CPUPPCState *env, int nr)
|
1025 |
{ |
1026 |
return env->IBAT[0][nr]; |
1027 |
} |
1028 |
|
1029 |
target_ulong do_load_ibatl (CPUPPCState *env, int nr)
|
1030 |
{ |
1031 |
return env->IBAT[1][nr]; |
1032 |
} |
1033 |
|
1034 |
void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value) |
1035 |
{ |
1036 |
target_ulong mask; |
1037 |
|
1038 |
dump_store_bat(env, 'I', 0, nr, value); |
1039 |
if (env->IBAT[0][nr] != value) { |
1040 |
mask = (value << 15) & 0x0FFE0000UL; |
1041 |
#if !defined(FLUSH_ALL_TLBS)
|
1042 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1043 |
#endif
|
1044 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
1045 |
* and invalidate all TLBs covered by this BAT
|
1046 |
*/
|
1047 |
mask = (value << 15) & 0x0FFE0000UL; |
1048 |
env->IBAT[0][nr] = (value & 0x00001FFFUL) | |
1049 |
(value & ~0x0001FFFFUL & ~mask);
|
1050 |
env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) | |
1051 |
(env->IBAT[1][nr] & ~0x0001FFFF & ~mask); |
1052 |
#if !defined(FLUSH_ALL_TLBS)
|
1053 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1054 |
#else
|
1055 |
tlb_flush(env, 1);
|
1056 |
#endif
|
1057 |
} |
1058 |
} |
1059 |
|
1060 |
void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value) |
1061 |
{ |
1062 |
dump_store_bat(env, 'I', 1, nr, value); |
1063 |
env->IBAT[1][nr] = value;
|
1064 |
} |
1065 |
|
1066 |
target_ulong do_load_dbatu (CPUPPCState *env, int nr)
|
1067 |
{ |
1068 |
return env->DBAT[0][nr]; |
1069 |
} |
1070 |
|
1071 |
target_ulong do_load_dbatl (CPUPPCState *env, int nr)
|
1072 |
{ |
1073 |
return env->DBAT[1][nr]; |
1074 |
} |
1075 |
|
1076 |
void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value) |
1077 |
{ |
1078 |
target_ulong mask; |
1079 |
|
1080 |
dump_store_bat(env, 'D', 0, nr, value); |
1081 |
if (env->DBAT[0][nr] != value) { |
1082 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
1083 |
* and invalidate all TLBs covered by this BAT
|
1084 |
*/
|
1085 |
mask = (value << 15) & 0x0FFE0000UL; |
1086 |
#if !defined(FLUSH_ALL_TLBS)
|
1087 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
1088 |
#endif
|
1089 |
mask = (value << 15) & 0x0FFE0000UL; |
1090 |
env->DBAT[0][nr] = (value & 0x00001FFFUL) | |
1091 |
(value & ~0x0001FFFFUL & ~mask);
|
1092 |
env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) | |
1093 |
(env->DBAT[1][nr] & ~0x0001FFFF & ~mask); |
1094 |
#if !defined(FLUSH_ALL_TLBS)
|
1095 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
1096 |
#else
|
1097 |
tlb_flush(env, 1);
|
1098 |
#endif
|
1099 |
} |
1100 |
} |
1101 |
|
1102 |
void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value) |
1103 |
{ |
1104 |
dump_store_bat(env, 'D', 1, nr, value); |
1105 |
env->DBAT[1][nr] = value;
|
1106 |
} |
1107 |
|
1108 |
/*****************************************************************************/
|
1109 |
/* Special registers manipulation */
|
1110 |
#if defined(TARGET_PPC64)
|
1111 |
target_ulong ppc_load_asr (CPUPPCState *env) |
1112 |
{ |
1113 |
return env->asr;
|
1114 |
} |
1115 |
|
1116 |
void ppc_store_asr (CPUPPCState *env, target_ulong value)
|
1117 |
{ |
1118 |
if (env->asr != value) {
|
1119 |
env->asr = value; |
1120 |
tlb_flush(env, 1);
|
1121 |
} |
1122 |
} |
1123 |
#endif
|
1124 |
|
1125 |
target_ulong do_load_sdr1 (CPUPPCState *env) |
1126 |
{ |
1127 |
return env->sdr1;
|
1128 |
} |
1129 |
|
1130 |
void do_store_sdr1 (CPUPPCState *env, target_ulong value)
|
1131 |
{ |
1132 |
#if defined (DEBUG_MMU)
|
1133 |
if (loglevel != 0) { |
1134 |
fprintf(logfile, "%s: 0x" ADDRX "\n", __func__, value); |
1135 |
} |
1136 |
#endif
|
1137 |
if (env->sdr1 != value) {
|
1138 |
env->sdr1 = value; |
1139 |
tlb_flush(env, 1);
|
1140 |
} |
1141 |
} |
1142 |
|
1143 |
target_ulong do_load_sr (CPUPPCState *env, int srnum)
|
1144 |
{ |
1145 |
return env->sr[srnum];
|
1146 |
} |
1147 |
|
1148 |
void do_store_sr (CPUPPCState *env, int srnum, target_ulong value) |
1149 |
{ |
1150 |
#if defined (DEBUG_MMU)
|
1151 |
if (loglevel != 0) { |
1152 |
fprintf(logfile, "%s: reg=%d 0x" ADDRX " " ADDRX "\n", |
1153 |
__func__, srnum, value, env->sr[srnum]); |
1154 |
} |
1155 |
#endif
|
1156 |
if (env->sr[srnum] != value) {
|
1157 |
env->sr[srnum] = value; |
1158 |
#if !defined(FLUSH_ALL_TLBS) && 0 |
1159 |
{ |
1160 |
target_ulong page, end; |
1161 |
/* Invalidate 256 MB of virtual memory */
|
1162 |
page = (16 << 20) * srnum; |
1163 |
end = page + (16 << 20); |
1164 |
for (; page != end; page += TARGET_PAGE_SIZE)
|
1165 |
tlb_flush_page(env, page); |
1166 |
} |
1167 |
#else
|
1168 |
tlb_flush(env, 1);
|
1169 |
#endif
|
1170 |
} |
1171 |
} |
1172 |
#endif /* !defined (CONFIG_USER_ONLY) */ |
1173 |
|
1174 |
uint32_t ppc_load_xer (CPUPPCState *env) |
1175 |
{ |
1176 |
return (xer_so << XER_SO) |
|
1177 |
(xer_ov << XER_OV) | |
1178 |
(xer_ca << XER_CA) | |
1179 |
(xer_bc << XER_BC) | |
1180 |
(xer_cmp << XER_CMP); |
1181 |
} |
1182 |
|
1183 |
void ppc_store_xer (CPUPPCState *env, uint32_t value)
|
1184 |
{ |
1185 |
xer_so = (value >> XER_SO) & 0x01;
|
1186 |
xer_ov = (value >> XER_OV) & 0x01;
|
1187 |
xer_ca = (value >> XER_CA) & 0x01;
|
1188 |
xer_cmp = (value >> XER_CMP) & 0xFF;
|
1189 |
xer_bc = (value >> XER_BC) & 0x7F;
|
1190 |
} |
1191 |
|
1192 |
/* Swap temporary saved registers with GPRs */
|
1193 |
static inline void swap_gpr_tgpr (CPUPPCState *env) |
1194 |
{ |
1195 |
ppc_gpr_t tmp; |
1196 |
|
1197 |
tmp = env->gpr[0];
|
1198 |
env->gpr[0] = env->tgpr[0]; |
1199 |
env->tgpr[0] = tmp;
|
1200 |
tmp = env->gpr[1];
|
1201 |
env->gpr[1] = env->tgpr[1]; |
1202 |
env->tgpr[1] = tmp;
|
1203 |
tmp = env->gpr[2];
|
1204 |
env->gpr[2] = env->tgpr[2]; |
1205 |
env->tgpr[2] = tmp;
|
1206 |
tmp = env->gpr[3];
|
1207 |
env->gpr[3] = env->tgpr[3]; |
1208 |
env->tgpr[3] = tmp;
|
1209 |
} |
1210 |
|
1211 |
/* GDBstub can read and write MSR... */
|
1212 |
target_ulong do_load_msr (CPUPPCState *env) |
1213 |
{ |
1214 |
return
|
1215 |
#if defined (TARGET_PPC64)
|
1216 |
((target_ulong)msr_sf << MSR_SF) | |
1217 |
((target_ulong)msr_isf << MSR_ISF) | |
1218 |
((target_ulong)msr_hv << MSR_HV) | |
1219 |
#endif
|
1220 |
((target_ulong)msr_ucle << MSR_UCLE) | |
1221 |
((target_ulong)msr_vr << MSR_VR) | /* VR / SPE */
|
1222 |
((target_ulong)msr_ap << MSR_AP) | |
1223 |
((target_ulong)msr_sa << MSR_SA) | |
1224 |
((target_ulong)msr_key << MSR_KEY) | |
1225 |
((target_ulong)msr_pow << MSR_POW) | /* POW / WE */
|
1226 |
((target_ulong)msr_tlb << MSR_TLB) | /* TLB / TGPE / CE */
|
1227 |
((target_ulong)msr_ile << MSR_ILE) | |
1228 |
((target_ulong)msr_ee << MSR_EE) | |
1229 |
((target_ulong)msr_pr << MSR_PR) | |
1230 |
((target_ulong)msr_fp << MSR_FP) | |
1231 |
((target_ulong)msr_me << MSR_ME) | |
1232 |
((target_ulong)msr_fe0 << MSR_FE0) | |
1233 |
((target_ulong)msr_se << MSR_SE) | /* SE / DWE / UBLE */
|
1234 |
((target_ulong)msr_be << MSR_BE) | /* BE / DE */
|
1235 |
((target_ulong)msr_fe1 << MSR_FE1) | |
1236 |
((target_ulong)msr_al << MSR_AL) | |
1237 |
((target_ulong)msr_ip << MSR_IP) | |
1238 |
((target_ulong)msr_ir << MSR_IR) | /* IR / IS */
|
1239 |
((target_ulong)msr_dr << MSR_DR) | /* DR / DS */
|
1240 |
((target_ulong)msr_pe << MSR_PE) | /* PE / EP */
|
1241 |
((target_ulong)msr_px << MSR_PX) | /* PX / PMM */
|
1242 |
((target_ulong)msr_ri << MSR_RI) | |
1243 |
((target_ulong)msr_le << MSR_LE); |
1244 |
} |
1245 |
|
1246 |
void do_store_msr (CPUPPCState *env, target_ulong value)
|
1247 |
{ |
1248 |
int enter_pm;
|
1249 |
|
1250 |
value &= env->msr_mask; |
1251 |
if (((value >> MSR_IR) & 1) != msr_ir || |
1252 |
((value >> MSR_DR) & 1) != msr_dr) {
|
1253 |
/* Flush all tlb when changing translation mode */
|
1254 |
tlb_flush(env, 1);
|
1255 |
env->interrupt_request |= CPU_INTERRUPT_EXITTB; |
1256 |
} |
1257 |
#if 0
|
1258 |
if (loglevel != 0) {
|
1259 |
fprintf(logfile, "%s: T0 %08lx\n", __func__, value);
|
1260 |
}
|
1261 |
#endif
|
1262 |
switch (PPC_EXCP(env)) {
|
1263 |
case PPC_FLAGS_EXCP_602:
|
1264 |
case PPC_FLAGS_EXCP_603:
|
1265 |
if (((value >> MSR_TGPR) & 1) != msr_tgpr) { |
1266 |
/* Swap temporary saved registers with GPRs */
|
1267 |
swap_gpr_tgpr(env); |
1268 |
} |
1269 |
break;
|
1270 |
default:
|
1271 |
break;
|
1272 |
} |
1273 |
#if defined (TARGET_PPC64)
|
1274 |
msr_sf = (value >> MSR_SF) & 1;
|
1275 |
msr_isf = (value >> MSR_ISF) & 1;
|
1276 |
msr_hv = (value >> MSR_HV) & 1;
|
1277 |
#endif
|
1278 |
msr_ucle = (value >> MSR_UCLE) & 1;
|
1279 |
msr_vr = (value >> MSR_VR) & 1; /* VR / SPE */ |
1280 |
msr_ap = (value >> MSR_AP) & 1;
|
1281 |
msr_sa = (value >> MSR_SA) & 1;
|
1282 |
msr_key = (value >> MSR_KEY) & 1;
|
1283 |
msr_pow = (value >> MSR_POW) & 1; /* POW / WE */ |
1284 |
msr_tlb = (value >> MSR_TLB) & 1; /* TLB / TGPR / CE */ |
1285 |
msr_ile = (value >> MSR_ILE) & 1;
|
1286 |
msr_ee = (value >> MSR_EE) & 1;
|
1287 |
msr_pr = (value >> MSR_PR) & 1;
|
1288 |
msr_fp = (value >> MSR_FP) & 1;
|
1289 |
msr_me = (value >> MSR_ME) & 1;
|
1290 |
msr_fe0 = (value >> MSR_FE0) & 1;
|
1291 |
msr_se = (value >> MSR_SE) & 1; /* SE / DWE / UBLE */ |
1292 |
msr_be = (value >> MSR_BE) & 1; /* BE / DE */ |
1293 |
msr_fe1 = (value >> MSR_FE1) & 1;
|
1294 |
msr_al = (value >> MSR_AL) & 1;
|
1295 |
msr_ip = (value >> MSR_IP) & 1;
|
1296 |
msr_ir = (value >> MSR_IR) & 1; /* IR / IS */ |
1297 |
msr_dr = (value >> MSR_DR) & 1; /* DR / DS */ |
1298 |
msr_pe = (value >> MSR_PE) & 1; /* PE / EP */ |
1299 |
msr_px = (value >> MSR_PX) & 1; /* PX / PMM */ |
1300 |
msr_ri = (value >> MSR_RI) & 1;
|
1301 |
msr_le = (value >> MSR_LE) & 1;
|
1302 |
do_compute_hflags(env); |
1303 |
|
1304 |
enter_pm = 0;
|
1305 |
switch (PPC_EXCP(env)) {
|
1306 |
case PPC_FLAGS_EXCP_603:
|
1307 |
/* Don't handle SLEEP mode: we should disable all clocks...
|
1308 |
* No dynamic power-management.
|
1309 |
*/
|
1310 |
if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00C00000) != 0) |
1311 |
enter_pm = 1;
|
1312 |
break;
|
1313 |
case PPC_FLAGS_EXCP_604:
|
1314 |
if (msr_pow == 1) |
1315 |
enter_pm = 1;
|
1316 |
break;
|
1317 |
case PPC_FLAGS_EXCP_7x0:
|
1318 |
if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00E00000) != 0) |
1319 |
enter_pm = 1;
|
1320 |
break;
|
1321 |
default:
|
1322 |
break;
|
1323 |
} |
1324 |
if (enter_pm) {
|
1325 |
/* power save: exit cpu loop */
|
1326 |
env->halted = 1;
|
1327 |
env->exception_index = EXCP_HLT; |
1328 |
cpu_loop_exit(); |
1329 |
} |
1330 |
} |
1331 |
|
1332 |
#if defined(TARGET_PPC64)
|
1333 |
void ppc_store_msr_32 (CPUPPCState *env, uint32_t value)
|
1334 |
{ |
1335 |
do_store_msr(env, |
1336 |
(do_load_msr(env) & ~0xFFFFFFFFULL) | (value & 0xFFFFFFFF)); |
1337 |
} |
1338 |
#endif
|
1339 |
|
1340 |
void do_compute_hflags (CPUPPCState *env)
|
1341 |
{ |
1342 |
/* Compute current hflags */
|
1343 |
env->hflags = (msr_cm << MSR_CM) | (msr_vr << MSR_VR) | |
1344 |
(msr_ap << MSR_AP) | (msr_sa << MSR_SA) | (msr_pr << MSR_PR) | |
1345 |
(msr_fp << MSR_FP) | (msr_fe0 << MSR_FE0) | (msr_se << MSR_SE) | |
1346 |
(msr_be << MSR_BE) | (msr_fe1 << MSR_FE1) | (msr_le << MSR_LE); |
1347 |
#if defined (TARGET_PPC64)
|
1348 |
/* No care here: PowerPC 64 MSR_SF means the same as MSR_CM for BookE */
|
1349 |
env->hflags |= (msr_sf << (MSR_SF - 32)) | (msr_hv << (MSR_HV - 32)); |
1350 |
#endif
|
1351 |
} |
1352 |
|
1353 |
/*****************************************************************************/
|
1354 |
/* Exception processing */
|
1355 |
#if defined (CONFIG_USER_ONLY)
|
1356 |
void do_interrupt (CPUState *env)
|
1357 |
{ |
1358 |
env->exception_index = -1;
|
1359 |
} |
1360 |
|
1361 |
int ppc_hw_interrupt (CPUState *env)
|
1362 |
{ |
1363 |
env->exception_index = -1;
|
1364 |
|
1365 |
return 0; |
1366 |
} |
1367 |
#else /* defined (CONFIG_USER_ONLY) */ |
1368 |
static void dump_syscall(CPUState *env) |
1369 |
{ |
1370 |
fprintf(logfile, "syscall r0=0x" REGX " r3=0x" REGX " r4=0x" REGX |
1371 |
" r5=0x" REGX " r6=0x" REGX " nip=0x" ADDRX "\n", |
1372 |
env->gpr[0], env->gpr[3], env->gpr[4], |
1373 |
env->gpr[5], env->gpr[6], env->nip); |
1374 |
} |
1375 |
|
1376 |
void do_interrupt (CPUState *env)
|
1377 |
{ |
1378 |
target_ulong msr, *srr_0, *srr_1, *asrr_0, *asrr_1; |
1379 |
int excp, idx;
|
1380 |
|
1381 |
excp = env->exception_index; |
1382 |
msr = do_load_msr(env); |
1383 |
/* The default is to use SRR0 & SRR1 to save the exception context */
|
1384 |
srr_0 = &env->spr[SPR_SRR0]; |
1385 |
srr_1 = &env->spr[SPR_SRR1]; |
1386 |
asrr_0 = NULL;
|
1387 |
asrr_1 = NULL;
|
1388 |
#if defined (DEBUG_EXCEPTIONS)
|
1389 |
if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) { |
1390 |
if (loglevel != 0) { |
1391 |
fprintf(logfile, |
1392 |
"Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n", |
1393 |
env->nip, excp, env->error_code); |
1394 |
cpu_dump_state(env, logfile, fprintf, 0);
|
1395 |
} |
1396 |
} |
1397 |
#endif
|
1398 |
if (loglevel & CPU_LOG_INT) {
|
1399 |
fprintf(logfile, "Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n", |
1400 |
env->nip, excp, env->error_code); |
1401 |
} |
1402 |
msr_pow = 0;
|
1403 |
idx = -1;
|
1404 |
/* Generate informations in save/restore registers */
|
1405 |
switch (excp) {
|
1406 |
/* Generic PowerPC exceptions */
|
1407 |
case EXCP_RESET: /* 0x0100 */ |
1408 |
switch (PPC_EXCP(env)) {
|
1409 |
case PPC_FLAGS_EXCP_40x:
|
1410 |
srr_0 = &env->spr[SPR_40x_SRR2]; |
1411 |
srr_1 = &env->spr[SPR_40x_SRR3]; |
1412 |
break;
|
1413 |
case PPC_FLAGS_EXCP_BOOKE:
|
1414 |
idx = 0;
|
1415 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
1416 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
1417 |
break;
|
1418 |
default:
|
1419 |
if (msr_ip)
|
1420 |
excp += 0xFFC00;
|
1421 |
excp |= 0xFFC00000;
|
1422 |
break;
|
1423 |
} |
1424 |
goto store_next;
|
1425 |
case EXCP_MACHINE_CHECK: /* 0x0200 */ |
1426 |
switch (PPC_EXCP(env)) {
|
1427 |
case PPC_FLAGS_EXCP_40x:
|
1428 |
srr_0 = &env->spr[SPR_40x_SRR2]; |
1429 |
srr_1 = &env->spr[SPR_40x_SRR3]; |
1430 |
break;
|
1431 |
case PPC_FLAGS_EXCP_BOOKE:
|
1432 |
idx = 1;
|
1433 |
srr_0 = &env->spr[SPR_BOOKE_MCSRR0]; |
1434 |
srr_1 = &env->spr[SPR_BOOKE_MCSRR1]; |
1435 |
asrr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
1436 |
asrr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
1437 |
msr_ce = 0;
|
1438 |
break;
|
1439 |
default:
|
1440 |
break;
|
1441 |
} |
1442 |
msr_me = 0;
|
1443 |
break;
|
1444 |
case EXCP_DSI: /* 0x0300 */ |
1445 |
/* Store exception cause */
|
1446 |
/* data location address has been stored
|
1447 |
* when the fault has been detected
|
1448 |
*/
|
1449 |
idx = 2;
|
1450 |
msr &= ~0xFFFF0000;
|
1451 |
#if defined (DEBUG_EXCEPTIONS)
|
1452 |
if (loglevel) {
|
1453 |
fprintf(logfile, "DSI exception: DSISR=0x" ADDRX" DAR=0x" ADDRX |
1454 |
"\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
|
1455 |
} else {
|
1456 |
printf("DSI exception: DSISR=0x" ADDRX" DAR=0x" ADDRX "\n", |
1457 |
env->spr[SPR_DSISR], env->spr[SPR_DAR]); |
1458 |
} |
1459 |
#endif
|
1460 |
goto store_next;
|
1461 |
case EXCP_ISI: /* 0x0400 */ |
1462 |
/* Store exception cause */
|
1463 |
idx = 3;
|
1464 |
msr &= ~0xFFFF0000;
|
1465 |
msr |= env->error_code; |
1466 |
#if defined (DEBUG_EXCEPTIONS)
|
1467 |
if (loglevel != 0) { |
1468 |
fprintf(logfile, "ISI exception: msr=0x" ADDRX ", nip=0x" ADDRX |
1469 |
"\n", msr, env->nip);
|
1470 |
} |
1471 |
#endif
|
1472 |
goto store_next;
|
1473 |
case EXCP_EXTERNAL: /* 0x0500 */ |
1474 |
idx = 4;
|
1475 |
goto store_next;
|
1476 |
case EXCP_ALIGN: /* 0x0600 */ |
1477 |
if (likely(PPC_EXCP(env) != PPC_FLAGS_EXCP_601)) {
|
1478 |
/* Store exception cause */
|
1479 |
idx = 5;
|
1480 |
/* Get rS/rD and rA from faulting opcode */
|
1481 |
env->spr[SPR_DSISR] |= |
1482 |
(ldl_code((env->nip - 4)) & 0x03FF0000) >> 16; |
1483 |
/* data location address has been stored
|
1484 |
* when the fault has been detected
|
1485 |
*/
|
1486 |
} else {
|
1487 |
/* IO error exception on PowerPC 601 */
|
1488 |
/* XXX: TODO */
|
1489 |
cpu_abort(env, |
1490 |
"601 IO error exception is not implemented yet !\n");
|
1491 |
} |
1492 |
goto store_current;
|
1493 |
case EXCP_PROGRAM: /* 0x0700 */ |
1494 |
idx = 6;
|
1495 |
msr &= ~0xFFFF0000;
|
1496 |
switch (env->error_code & ~0xF) { |
1497 |
case EXCP_FP:
|
1498 |
if (msr_fe0 == 0 && msr_fe1 == 0) { |
1499 |
#if defined (DEBUG_EXCEPTIONS)
|
1500 |
printf("Ignore floating point exception\n");
|
1501 |
#endif
|
1502 |
return;
|
1503 |
} |
1504 |
msr |= 0x00100000;
|
1505 |
/* Set FX */
|
1506 |
env->fpscr[7] |= 0x8; |
1507 |
/* Finally, update FEX */
|
1508 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
1509 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
1510 |
env->fpscr[7] |= 0x4; |
1511 |
break;
|
1512 |
case EXCP_INVAL:
|
1513 |
// printf("Invalid instruction at 0x" ADDRX "\n", env->nip);
|
1514 |
msr |= 0x00080000;
|
1515 |
break;
|
1516 |
case EXCP_PRIV:
|
1517 |
msr |= 0x00040000;
|
1518 |
break;
|
1519 |
case EXCP_TRAP:
|
1520 |
idx = 15;
|
1521 |
msr |= 0x00020000;
|
1522 |
break;
|
1523 |
default:
|
1524 |
/* Should never occur */
|
1525 |
break;
|
1526 |
} |
1527 |
msr |= 0x00010000;
|
1528 |
goto store_current;
|
1529 |
case EXCP_NO_FP: /* 0x0800 */ |
1530 |
idx = 7;
|
1531 |
msr &= ~0xFFFF0000;
|
1532 |
goto store_current;
|
1533 |
case EXCP_DECR:
|
1534 |
goto store_next;
|
1535 |
case EXCP_SYSCALL: /* 0x0C00 */ |
1536 |
idx = 8;
|
1537 |
/* NOTE: this is a temporary hack to support graphics OSI
|
1538 |
calls from the MOL driver */
|
1539 |
if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b && |
1540 |
env->osi_call) { |
1541 |
if (env->osi_call(env) != 0) |
1542 |
return;
|
1543 |
} |
1544 |
if (loglevel & CPU_LOG_INT) {
|
1545 |
dump_syscall(env); |
1546 |
} |
1547 |
goto store_next;
|
1548 |
case EXCP_TRACE: /* 0x0D00 */ |
1549 |
goto store_next;
|
1550 |
case EXCP_PERF: /* 0x0F00 */ |
1551 |
/* XXX: TODO */
|
1552 |
cpu_abort(env, |
1553 |
"Performance counter exception is not implemented yet !\n");
|
1554 |
goto store_next;
|
1555 |
/* 32 bits PowerPC specific exceptions */
|
1556 |
case EXCP_FP_ASSIST: /* 0x0E00 */ |
1557 |
/* XXX: TODO */
|
1558 |
cpu_abort(env, "Floating point assist exception "
|
1559 |
"is not implemented yet !\n");
|
1560 |
goto store_next;
|
1561 |
/* 64 bits PowerPC exceptions */
|
1562 |
case EXCP_DSEG: /* 0x0380 */ |
1563 |
/* XXX: TODO */
|
1564 |
cpu_abort(env, "Data segment exception is not implemented yet !\n");
|
1565 |
goto store_next;
|
1566 |
case EXCP_ISEG: /* 0x0480 */ |
1567 |
/* XXX: TODO */
|
1568 |
cpu_abort(env, |
1569 |
"Instruction segment exception is not implemented yet !\n");
|
1570 |
goto store_next;
|
1571 |
case EXCP_HDECR: /* 0x0980 */ |
1572 |
/* XXX: TODO */
|
1573 |
cpu_abort(env, "Hypervisor decrementer exception is not implemented "
|
1574 |
"yet !\n");
|
1575 |
goto store_next;
|
1576 |
/* Implementation specific exceptions */
|
1577 |
case 0x0A00: |
1578 |
if (likely(env->spr[SPR_PVR] == CPU_PPC_G2 ||
|
1579 |
env->spr[SPR_PVR] == CPU_PPC_G2LE)) { |
1580 |
/* Critical interrupt on G2 */
|
1581 |
/* XXX: TODO */
|
1582 |
cpu_abort(env, "G2 critical interrupt is not implemented yet !\n");
|
1583 |
goto store_next;
|
1584 |
} else {
|
1585 |
cpu_abort(env, "Invalid exception 0x0A00 !\n");
|
1586 |
} |
1587 |
return;
|
1588 |
case 0x0F20: |
1589 |
idx = 9;
|
1590 |
switch (PPC_EXCP(env)) {
|
1591 |
case PPC_FLAGS_EXCP_40x:
|
1592 |
/* APU unavailable on 405 */
|
1593 |
/* XXX: TODO */
|
1594 |
cpu_abort(env, |
1595 |
"APU unavailable exception is not implemented yet !\n");
|
1596 |
goto store_next;
|
1597 |
case PPC_FLAGS_EXCP_74xx:
|
1598 |
/* Altivec unavailable */
|
1599 |
/* XXX: TODO */
|
1600 |
cpu_abort(env, "Altivec unavailable exception "
|
1601 |
"is not implemented yet !\n");
|
1602 |
goto store_next;
|
1603 |
default:
|
1604 |
cpu_abort(env, "Invalid exception 0x0F20 !\n");
|
1605 |
break;
|
1606 |
} |
1607 |
return;
|
1608 |
case 0x1000: |
1609 |
idx = 10;
|
1610 |
switch (PPC_EXCP(env)) {
|
1611 |
case PPC_FLAGS_EXCP_40x:
|
1612 |
/* PIT on 4xx */
|
1613 |
msr &= ~0xFFFF0000;
|
1614 |
if (loglevel != 0) |
1615 |
fprintf(logfile, "PIT exception\n");
|
1616 |
goto store_next;
|
1617 |
case PPC_FLAGS_EXCP_602:
|
1618 |
case PPC_FLAGS_EXCP_603:
|
1619 |
/* ITLBMISS on 602/603 */
|
1620 |
goto store_gprs;
|
1621 |
case PPC_FLAGS_EXCP_7x5:
|
1622 |
/* ITLBMISS on 745/755 */
|
1623 |
goto tlb_miss;
|
1624 |
default:
|
1625 |
cpu_abort(env, "Invalid exception 0x1000 !\n");
|
1626 |
break;
|
1627 |
} |
1628 |
return;
|
1629 |
case 0x1010: |
1630 |
idx = 11;
|
1631 |
switch (PPC_EXCP(env)) {
|
1632 |
case PPC_FLAGS_EXCP_40x:
|
1633 |
/* FIT on 4xx */
|
1634 |
msr &= ~0xFFFF0000;
|
1635 |
if (loglevel != 0) |
1636 |
fprintf(logfile, "FIT exception\n");
|
1637 |
goto store_next;
|
1638 |
default:
|
1639 |
cpu_abort(env, "Invalid exception 0x1010 !\n");
|
1640 |
break;
|
1641 |
} |
1642 |
return;
|
1643 |
case 0x1020: |
1644 |
idx = 12;
|
1645 |
switch (PPC_EXCP(env)) {
|
1646 |
case PPC_FLAGS_EXCP_40x:
|
1647 |
/* Watchdog on 4xx */
|
1648 |
msr &= ~0xFFFF0000;
|
1649 |
if (loglevel != 0) |
1650 |
fprintf(logfile, "WDT exception\n");
|
1651 |
goto store_next;
|
1652 |
case PPC_FLAGS_EXCP_BOOKE:
|
1653 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
1654 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
1655 |
break;
|
1656 |
default:
|
1657 |
cpu_abort(env, "Invalid exception 0x1020 !\n");
|
1658 |
break;
|
1659 |
} |
1660 |
return;
|
1661 |
case 0x1100: |
1662 |
idx = 13;
|
1663 |
switch (PPC_EXCP(env)) {
|
1664 |
case PPC_FLAGS_EXCP_40x:
|
1665 |
/* DTLBMISS on 4xx */
|
1666 |
msr &= ~0xFFFF0000;
|
1667 |
goto store_next;
|
1668 |
case PPC_FLAGS_EXCP_602:
|
1669 |
case PPC_FLAGS_EXCP_603:
|
1670 |
/* DLTLBMISS on 602/603 */
|
1671 |
goto store_gprs;
|
1672 |
case PPC_FLAGS_EXCP_7x5:
|
1673 |
/* DLTLBMISS on 745/755 */
|
1674 |
goto tlb_miss;
|
1675 |
default:
|
1676 |
cpu_abort(env, "Invalid exception 0x1100 !\n");
|
1677 |
break;
|
1678 |
} |
1679 |
return;
|
1680 |
case 0x1200: |
1681 |
idx = 14;
|
1682 |
switch (PPC_EXCP(env)) {
|
1683 |
case PPC_FLAGS_EXCP_40x:
|
1684 |
/* ITLBMISS on 4xx */
|
1685 |
msr &= ~0xFFFF0000;
|
1686 |
goto store_next;
|
1687 |
case PPC_FLAGS_EXCP_602:
|
1688 |
case PPC_FLAGS_EXCP_603:
|
1689 |
/* DSTLBMISS on 602/603 */
|
1690 |
store_gprs:
|
1691 |
/* Swap temporary saved registers with GPRs */
|
1692 |
swap_gpr_tgpr(env); |
1693 |
msr_tgpr = 1;
|
1694 |
#if defined (DEBUG_SOFTWARE_TLB)
|
1695 |
if (loglevel != 0) { |
1696 |
const unsigned char *es; |
1697 |
target_ulong *miss, *cmp; |
1698 |
int en;
|
1699 |
if (excp == 0x1000) { |
1700 |
es = "I";
|
1701 |
en = 'I';
|
1702 |
miss = &env->spr[SPR_IMISS]; |
1703 |
cmp = &env->spr[SPR_ICMP]; |
1704 |
} else {
|
1705 |
if (excp == 0x1100) |
1706 |
es = "DL";
|
1707 |
else
|
1708 |
es = "DS";
|
1709 |
en = 'D';
|
1710 |
miss = &env->spr[SPR_DMISS]; |
1711 |
cmp = &env->spr[SPR_DCMP]; |
1712 |
} |
1713 |
fprintf(logfile, "6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX |
1714 |
" H1 " ADDRX " H2 " ADDRX " " ADDRX "\n", |
1715 |
es, en, *miss, en, *cmp, |
1716 |
env->spr[SPR_HASH1], env->spr[SPR_HASH2], |
1717 |
env->error_code); |
1718 |
} |
1719 |
#endif
|
1720 |
goto tlb_miss;
|
1721 |
case PPC_FLAGS_EXCP_7x5:
|
1722 |
/* DSTLBMISS on 745/755 */
|
1723 |
tlb_miss:
|
1724 |
msr &= ~0xF83F0000;
|
1725 |
msr |= env->crf[0] << 28; |
1726 |
msr |= env->error_code; /* key, D/I, S/L bits */
|
1727 |
/* Set way using a LRU mechanism */
|
1728 |
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17; |
1729 |
goto store_next;
|
1730 |
default:
|
1731 |
cpu_abort(env, "Invalid exception 0x1200 !\n");
|
1732 |
break;
|
1733 |
} |
1734 |
return;
|
1735 |
case 0x1300: |
1736 |
switch (PPC_EXCP(env)) {
|
1737 |
case PPC_FLAGS_EXCP_601:
|
1738 |
case PPC_FLAGS_EXCP_602:
|
1739 |
case PPC_FLAGS_EXCP_603:
|
1740 |
case PPC_FLAGS_EXCP_604:
|
1741 |
case PPC_FLAGS_EXCP_7x0:
|
1742 |
case PPC_FLAGS_EXCP_7x5:
|
1743 |
/* IABR on 6xx/7xx */
|
1744 |
/* XXX: TODO */
|
1745 |
cpu_abort(env, "IABR exception is not implemented yet !\n");
|
1746 |
goto store_next;
|
1747 |
default:
|
1748 |
cpu_abort(env, "Invalid exception 0x1300 !\n");
|
1749 |
break;
|
1750 |
} |
1751 |
return;
|
1752 |
case 0x1400: |
1753 |
switch (PPC_EXCP(env)) {
|
1754 |
case PPC_FLAGS_EXCP_601:
|
1755 |
case PPC_FLAGS_EXCP_602:
|
1756 |
case PPC_FLAGS_EXCP_603:
|
1757 |
case PPC_FLAGS_EXCP_604:
|
1758 |
case PPC_FLAGS_EXCP_7x0:
|
1759 |
case PPC_FLAGS_EXCP_7x5:
|
1760 |
/* SMI on 6xx/7xx */
|
1761 |
/* XXX: TODO */
|
1762 |
cpu_abort(env, "SMI exception is not implemented yet !\n");
|
1763 |
goto store_next;
|
1764 |
default:
|
1765 |
cpu_abort(env, "Invalid exception 0x1400 !\n");
|
1766 |
break;
|
1767 |
} |
1768 |
return;
|
1769 |
case 0x1500: |
1770 |
switch (PPC_EXCP(env)) {
|
1771 |
case PPC_FLAGS_EXCP_602:
|
1772 |
/* Watchdog on 602 */
|
1773 |
/* XXX: TODO */
|
1774 |
cpu_abort(env, |
1775 |
"602 watchdog exception is not implemented yet !\n");
|
1776 |
goto store_next;
|
1777 |
case PPC_FLAGS_EXCP_970:
|
1778 |
/* Soft patch exception on 970 */
|
1779 |
/* XXX: TODO */
|
1780 |
cpu_abort(env, |
1781 |
"970 soft-patch exception is not implemented yet !\n");
|
1782 |
goto store_next;
|
1783 |
case PPC_FLAGS_EXCP_74xx:
|
1784 |
/* VPU assist on 74xx */
|
1785 |
/* XXX: TODO */
|
1786 |
cpu_abort(env, "VPU assist exception is not implemented yet !\n");
|
1787 |
goto store_next;
|
1788 |
default:
|
1789 |
cpu_abort(env, "Invalid exception 0x1500 !\n");
|
1790 |
break;
|
1791 |
} |
1792 |
return;
|
1793 |
case 0x1600: |
1794 |
switch (PPC_EXCP(env)) {
|
1795 |
case PPC_FLAGS_EXCP_602:
|
1796 |
/* Emulation trap on 602 */
|
1797 |
/* XXX: TODO */
|
1798 |
cpu_abort(env, "602 emulation trap exception "
|
1799 |
"is not implemented yet !\n");
|
1800 |
goto store_next;
|
1801 |
case PPC_FLAGS_EXCP_970:
|
1802 |
/* Maintenance exception on 970 */
|
1803 |
/* XXX: TODO */
|
1804 |
cpu_abort(env, |
1805 |
"970 maintenance exception is not implemented yet !\n");
|
1806 |
goto store_next;
|
1807 |
default:
|
1808 |
cpu_abort(env, "Invalid exception 0x1600 !\n");
|
1809 |
break;
|
1810 |
} |
1811 |
return;
|
1812 |
case 0x1700: |
1813 |
switch (PPC_EXCP(env)) {
|
1814 |
case PPC_FLAGS_EXCP_7x0:
|
1815 |
case PPC_FLAGS_EXCP_7x5:
|
1816 |
/* Thermal management interrupt on G3 */
|
1817 |
/* XXX: TODO */
|
1818 |
cpu_abort(env, "G3 thermal management exception "
|
1819 |
"is not implemented yet !\n");
|
1820 |
goto store_next;
|
1821 |
case PPC_FLAGS_EXCP_970:
|
1822 |
/* VPU assist on 970 */
|
1823 |
/* XXX: TODO */
|
1824 |
cpu_abort(env, |
1825 |
"970 VPU assist exception is not implemented yet !\n");
|
1826 |
goto store_next;
|
1827 |
default:
|
1828 |
cpu_abort(env, "Invalid exception 0x1700 !\n");
|
1829 |
break;
|
1830 |
} |
1831 |
return;
|
1832 |
case 0x1800: |
1833 |
switch (PPC_EXCP(env)) {
|
1834 |
case PPC_FLAGS_EXCP_970:
|
1835 |
/* Thermal exception on 970 */
|
1836 |
/* XXX: TODO */
|
1837 |
cpu_abort(env, "970 thermal management exception "
|
1838 |
"is not implemented yet !\n");
|
1839 |
goto store_next;
|
1840 |
default:
|
1841 |
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
1842 |
break;
|
1843 |
} |
1844 |
return;
|
1845 |
case 0x2000: |
1846 |
switch (PPC_EXCP(env)) {
|
1847 |
case PPC_FLAGS_EXCP_40x:
|
1848 |
/* DEBUG on 4xx */
|
1849 |
/* XXX: TODO */
|
1850 |
cpu_abort(env, "40x debug exception is not implemented yet !\n");
|
1851 |
goto store_next;
|
1852 |
case PPC_FLAGS_EXCP_601:
|
1853 |
/* Run mode exception on 601 */
|
1854 |
/* XXX: TODO */
|
1855 |
cpu_abort(env, |
1856 |
"601 run mode exception is not implemented yet !\n");
|
1857 |
goto store_next;
|
1858 |
case PPC_FLAGS_EXCP_BOOKE:
|
1859 |
srr_0 = &env->spr[SPR_BOOKE_CSRR0]; |
1860 |
srr_1 = &env->spr[SPR_BOOKE_CSRR1]; |
1861 |
break;
|
1862 |
default:
|
1863 |
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
1864 |
break;
|
1865 |
} |
1866 |
return;
|
1867 |
/* Other exceptions */
|
1868 |
/* Qemu internal exceptions:
|
1869 |
* we should never come here with those values: abort execution
|
1870 |
*/
|
1871 |
default:
|
1872 |
cpu_abort(env, "Invalid exception: code %d (%04x)\n", excp, excp);
|
1873 |
return;
|
1874 |
store_current:
|
1875 |
/* save current instruction location */
|
1876 |
*srr_0 = env->nip - 4;
|
1877 |
break;
|
1878 |
store_next:
|
1879 |
/* save next instruction location */
|
1880 |
*srr_0 = env->nip; |
1881 |
break;
|
1882 |
} |
1883 |
/* Save msr */
|
1884 |
*srr_1 = msr; |
1885 |
if (asrr_0 != NULL) |
1886 |
*asrr_0 = *srr_0; |
1887 |
if (asrr_1 != NULL) |
1888 |
*asrr_1 = *srr_1; |
1889 |
/* If we disactivated any translation, flush TLBs */
|
1890 |
if (msr_ir || msr_dr) {
|
1891 |
tlb_flush(env, 1);
|
1892 |
} |
1893 |
/* reload MSR with correct bits */
|
1894 |
msr_ee = 0;
|
1895 |
msr_pr = 0;
|
1896 |
msr_fp = 0;
|
1897 |
msr_fe0 = 0;
|
1898 |
msr_se = 0;
|
1899 |
msr_be = 0;
|
1900 |
msr_fe1 = 0;
|
1901 |
msr_ir = 0;
|
1902 |
msr_dr = 0;
|
1903 |
msr_ri = 0;
|
1904 |
msr_le = msr_ile; |
1905 |
if (PPC_EXCP(env) == PPC_FLAGS_EXCP_BOOKE) {
|
1906 |
msr_cm = msr_icm; |
1907 |
if (idx == -1 || (idx >= 16 && idx < 32)) { |
1908 |
cpu_abort(env, "Invalid exception index for excp %d %08x idx %d\n",
|
1909 |
excp, excp, idx); |
1910 |
} |
1911 |
#if defined(TARGET_PPC64)
|
1912 |
if (msr_cm)
|
1913 |
env->nip = (uint64_t)env->spr[SPR_BOOKE_IVPR]; |
1914 |
else
|
1915 |
#endif
|
1916 |
env->nip = (uint32_t)env->spr[SPR_BOOKE_IVPR]; |
1917 |
if (idx < 16) |
1918 |
env->nip |= env->spr[SPR_BOOKE_IVOR0 + idx]; |
1919 |
else if (idx < 38) |
1920 |
env->nip |= env->spr[SPR_BOOKE_IVOR32 + idx - 32];
|
1921 |
} else {
|
1922 |
msr_sf = msr_isf; |
1923 |
env->nip = excp; |
1924 |
} |
1925 |
do_compute_hflags(env); |
1926 |
/* Jump to handler */
|
1927 |
env->exception_index = EXCP_NONE; |
1928 |
} |
1929 |
|
1930 |
int ppc_hw_interrupt (CPUState *env)
|
1931 |
{ |
1932 |
int raised = 0; |
1933 |
|
1934 |
#if 0
|
1935 |
printf("%s: %p pending %08x req %08x %08x me %d ee %d\n",
|
1936 |
__func__, env, env->pending_interrupts,
|
1937 |
env->interrupt_request, interrupt_request,
|
1938 |
msr_me, msr_ee);
|
1939 |
#endif
|
1940 |
/* Raise it */
|
1941 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) { |
1942 |
/* External reset / critical input */
|
1943 |
env->exception_index = EXCP_RESET; |
1944 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
|
1945 |
raised = 1;
|
1946 |
} |
1947 |
if (raised == 0 && msr_me != 0) { |
1948 |
/* Machine check exception */
|
1949 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) { |
1950 |
env->exception_index = EXCP_MACHINE_CHECK; |
1951 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
|
1952 |
raised = 1;
|
1953 |
} |
1954 |
} |
1955 |
if (raised == 0 && msr_ee != 0) { |
1956 |
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */ |
1957 |
/* Hypervisor decrementer exception */
|
1958 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) { |
1959 |
env->exception_index = EXCP_HDECR; |
1960 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
|
1961 |
raised = 1;
|
1962 |
} else
|
1963 |
#endif
|
1964 |
/* Decrementer exception */
|
1965 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) { |
1966 |
env->exception_index = EXCP_DECR; |
1967 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
|
1968 |
raised = 1;
|
1969 |
/* Programmable interval timer on embedded PowerPC */
|
1970 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) { |
1971 |
env->exception_index = EXCP_40x_PIT; |
1972 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
|
1973 |
raised = 1;
|
1974 |
/* Fixed interval timer on embedded PowerPC */
|
1975 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) { |
1976 |
env->exception_index = EXCP_40x_FIT; |
1977 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
|
1978 |
raised = 1;
|
1979 |
/* Watchdog timer on embedded PowerPC */
|
1980 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) { |
1981 |
env->exception_index = EXCP_40x_WATCHDOG; |
1982 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
|
1983 |
raised = 1;
|
1984 |
/* External interrupt */
|
1985 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) { |
1986 |
env->exception_index = EXCP_EXTERNAL; |
1987 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
|
1988 |
raised = 1;
|
1989 |
} |
1990 |
#if 0 // TODO
|
1991 |
/* External debug exception */
|
1992 |
} else if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
|
1993 |
env->exception_index = EXCP_xxx;
|
1994 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
|
1995 |
raised = 1;
|
1996 |
#endif
|
1997 |
} |
1998 |
if (raised != 0) { |
1999 |
env->error_code = 0;
|
2000 |
do_interrupt(env); |
2001 |
} |
2002 |
|
2003 |
return raised;
|
2004 |
} |
2005 |
#endif /* !CONFIG_USER_ONLY */ |