2be0071f22
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1492 c046a42c-6fe2-441c-8c8c-71466251a162
1504 lines
45 KiB
C
1504 lines
45 KiB
C
/*
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* PowerPC emulation helpers for qemu.
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*
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* Copyright (c) 2003-2005 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 "exec.h"
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//#define DEBUG_MMU
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//#define DEBUG_BATS
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//#define DEBUG_EXCEPTIONS
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/*****************************************************************************/
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/* PowerPC MMU emulation */
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/* Perform BAT hit & translation */
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static int get_bat (CPUState *env, uint32_t *real, int *prot,
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uint32_t virtual, int rw, int type)
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{
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uint32_t *BATlt, *BATut, *BATu, *BATl;
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uint32_t base, BEPIl, BEPIu, bl;
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int i;
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int ret = -1;
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#if defined (DEBUG_BATS)
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if (loglevel > 0) {
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fprintf(logfile, "%s: %cBAT v 0x%08x\n", __func__,
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type == ACCESS_CODE ? 'I' : 'D', virtual);
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}
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#endif
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switch (type) {
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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:
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BATlt = env->DBAT[1];
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BATut = env->DBAT[0];
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break;
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}
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#if defined (DEBUG_BATS)
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if (loglevel > 0) {
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fprintf(logfile, "%s...: %cBAT v 0x%08x\n", __func__,
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type == ACCESS_CODE ? 'I' : 'D', virtual);
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}
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#endif
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base = virtual & 0xFFFC0000;
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for (i = 0; i < 4; i++) {
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BATu = &BATut[i];
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BATl = &BATlt[i];
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BEPIu = *BATu & 0xF0000000;
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BEPIl = *BATu & 0x0FFE0000;
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bl = (*BATu & 0x00001FFC) << 15;
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#if defined (DEBUG_BATS)
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if (loglevel > 0) {
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fprintf(logfile, "%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
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__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
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*BATu, *BATl);
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}
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#endif
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if ((virtual & 0xF0000000) == BEPIu &&
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((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
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/* BAT matches */
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if ((msr_pr == 0 && (*BATu & 0x00000002)) ||
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(msr_pr == 1 && (*BATu & 0x00000001))) {
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/* Get physical address */
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*real = (*BATl & 0xF0000000) |
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((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
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(virtual & 0x0001F000);
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if (*BATl & 0x00000001)
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*prot = PAGE_READ;
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if (*BATl & 0x00000002)
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*prot = PAGE_WRITE | PAGE_READ;
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#if defined (DEBUG_BATS)
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if (loglevel > 0) {
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fprintf(logfile, "BAT %d match: r 0x%08x prot=%c%c\n",
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i, *real, *prot & PAGE_READ ? 'R' : '-',
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*prot & PAGE_WRITE ? 'W' : '-');
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}
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#endif
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ret = 0;
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break;
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}
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}
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}
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if (ret < 0) {
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#if defined (DEBUG_BATS)
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printf("no BAT match for 0x%08x:\n", virtual);
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for (i = 0; i < 4; i++) {
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BATu = &BATut[i];
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BATl = &BATlt[i];
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BEPIu = *BATu & 0xF0000000;
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BEPIl = *BATu & 0x0FFE0000;
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bl = (*BATu & 0x00001FFC) << 15;
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printf("%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x \n\t"
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"0x%08x 0x%08x 0x%08x\n",
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__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
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*BATu, *BATl, BEPIu, BEPIl, bl);
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}
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#endif
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}
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/* No hit */
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return ret;
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}
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/* PTE table lookup */
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static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va,
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int h, int key, int rw)
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{
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uint32_t pte0, pte1, keep = 0, access = 0;
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int i, good = -1, store = 0;
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int ret = -1; /* No entry found */
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for (i = 0; i < 8; i++) {
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pte0 = ldl_phys(base + (i * 8));
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pte1 = ldl_phys(base + (i * 8) + 4);
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#if defined (DEBUG_MMU)
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if (loglevel > 0) {
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fprintf(logfile, "Load pte from 0x%08x => 0x%08x 0x%08x "
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"%d %d %d 0x%08x\n", base + (i * 8), pte0, pte1,
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pte0 >> 31, h, (pte0 >> 6) & 1, va);
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}
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#endif
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/* Check validity and table match */
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if (pte0 & 0x80000000 && (h == ((pte0 >> 6) & 1))) {
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/* Check vsid & api */
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if ((pte0 & 0x7FFFFFBF) == va) {
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if (good == -1) {
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good = i;
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keep = pte1;
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} else {
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/* All matches should have equal RPN, WIMG & PP */
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if ((keep & 0xFFFFF07B) != (pte1 & 0xFFFFF07B)) {
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if (loglevel > 0)
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fprintf(logfile, "Bad RPN/WIMG/PP\n");
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return -1;
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}
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}
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/* Check access rights */
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if (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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if (ret < 0) {
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if ((rw == 0 && (access & PAGE_READ)) ||
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(rw == 1 && (access & PAGE_WRITE))) {
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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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good = i;
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keep = pte1;
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ret = 0;
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} else {
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/* Access right violation */
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ret = -2;
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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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}
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*prot = access;
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}
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}
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}
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}
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if (good != -1) {
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*RPN = keep & 0xFFFFF000;
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#if defined (DEBUG_MMU)
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if (loglevel > 0) {
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fprintf(logfile, "found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
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*RPN, *prot, ret);
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}
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#endif
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/* Update page flags */
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if (!(keep & 0x00000100)) {
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/* Access flag */
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keep |= 0x00000100;
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store = 1;
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}
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if (!(keep & 0x00000080)) {
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if (rw && ret == 0) {
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/* Change flag */
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keep |= 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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*prot &= ~PAGE_WRITE;
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}
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}
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if (store) {
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stl_phys_notdirty(base + (good * 8) + 4, keep);
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}
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}
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return ret;
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}
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static inline uint32_t get_pgaddr (uint32_t sdr1, uint32_t hash, uint32_t mask)
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{
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return (sdr1 & 0xFFFF0000) | (hash & mask);
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}
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/* Perform segment based translation */
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static int get_segment (CPUState *env, uint32_t *real, int *prot,
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uint32_t virtual, int rw, int type)
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{
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uint32_t pg_addr, sdr, ptem, vsid, pgidx;
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uint32_t hash, mask;
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uint32_t sr;
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int key;
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int ret = -1, ret2;
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sr = env->sr[virtual >> 28];
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#if defined (DEBUG_MMU)
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if (loglevel > 0) {
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fprintf(logfile, "Check segment v=0x%08x %d 0x%08x nip=0x%08x "
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"lr=0x%08x ir=%d dr=%d pr=%d %d t=%d\n",
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virtual, virtual >> 28, sr, env->nip,
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env->lr, msr_ir, msr_dr, msr_pr, rw, type);
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}
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#endif
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key = (((sr & 0x20000000) && msr_pr == 1) ||
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((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0;
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if ((sr & 0x80000000) == 0) {
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#if defined (DEBUG_MMU)
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if (loglevel > 0)
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fprintf(logfile, "pte segment: key=%d n=0x%08x\n",
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key, sr & 0x10000000);
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#endif
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/* Check if instruction fetch is allowed, if needed */
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if (type != ACCESS_CODE || (sr & 0x10000000) == 0) {
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/* Page address translation */
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vsid = sr & 0x00FFFFFF;
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pgidx = (virtual >> 12) & 0xFFFF;
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sdr = env->sdr1;
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hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6;
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mask = ((sdr & 0x000001FF) << 16) | 0xFFC0;
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pg_addr = get_pgaddr(sdr, hash, mask);
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ptem = (vsid << 7) | (pgidx >> 10);
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#if defined (DEBUG_MMU)
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if (loglevel > 0) {
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fprintf(logfile, "0 sdr1=0x%08x vsid=0x%06x api=0x%04x "
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"hash=0x%07x pg_addr=0x%08x\n", sdr, vsid, pgidx, hash,
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pg_addr);
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}
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#endif
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/* Primary table lookup */
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ret = find_pte(real, prot, pg_addr, ptem, 0, key, rw);
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if (ret < 0) {
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/* Secondary table lookup */
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hash = (~hash) & 0x01FFFFC0;
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pg_addr = get_pgaddr(sdr, hash, mask);
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#if defined (DEBUG_MMU)
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if (virtual != 0xEFFFFFFF && loglevel > 0) {
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fprintf(logfile, "1 sdr1=0x%08x vsid=0x%06x api=0x%04x "
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"hash=0x%05x pg_addr=0x%08x\n", sdr, vsid, pgidx,
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hash, pg_addr);
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}
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#endif
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ret2 = find_pte(real, prot, pg_addr, ptem, 1, key, rw);
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if (ret2 != -1)
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ret = ret2;
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}
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} else {
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#if defined (DEBUG_MMU)
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if (loglevel > 0)
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fprintf(logfile, "No access allowed\n");
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#endif
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ret = -3;
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}
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} else {
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#if defined (DEBUG_MMU)
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if (loglevel > 0)
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fprintf(logfile, "direct store...\n");
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#endif
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/* Direct-store segment : absolutely *BUGGY* for now */
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switch (type) {
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case ACCESS_INT:
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/* Integer load/store : only access allowed */
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break;
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case ACCESS_CODE:
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/* No code fetch is allowed in direct-store areas */
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return -4;
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case ACCESS_FLOAT:
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/* Floating point load/store */
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return -4;
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case ACCESS_RES:
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/* lwarx, ldarx or srwcx. */
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return -4;
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case ACCESS_CACHE:
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/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
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/* Should make the instruction do no-op.
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* As it already do no-op, it's quite easy :-)
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*/
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*real = virtual;
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return 0;
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case ACCESS_EXT:
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/* eciwx or ecowx */
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return -4;
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default:
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if (logfile) {
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fprintf(logfile, "ERROR: instruction should not need "
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"address translation\n");
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}
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printf("ERROR: instruction should not need "
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"address translation\n");
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return -4;
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}
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if ((rw == 1 || key != 1) && (rw == 0 || key != 0)) {
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*real = virtual;
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ret = 2;
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} else {
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ret = -2;
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}
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}
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return ret;
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}
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int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
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uint32_t address, int rw, int access_type)
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{
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int ret;
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#if 0
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if (loglevel > 0) {
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fprintf(logfile, "%s\n", __func__);
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}
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#endif
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if ((access_type == ACCESS_CODE && msr_ir == 0) ||
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(access_type != ACCESS_CODE && msr_dr == 0)) {
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/* No address translation */
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*physical = address & ~0xFFF;
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*prot = PAGE_READ | PAGE_WRITE;
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ret = 0;
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} else {
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/* Try to find a BAT */
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ret = get_bat(env, physical, prot, address, rw, access_type);
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if (ret < 0) {
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/* We didn't match any BAT entry */
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ret = get_segment(env, physical, prot, address, rw, access_type);
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}
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}
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#if 0
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if (loglevel > 0) {
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fprintf(logfile, "%s address %08x => %08x\n",
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__func__, address, *physical);
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}
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#endif
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return ret;
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}
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#if defined(CONFIG_USER_ONLY)
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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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target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
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{
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uint32_t phys_addr;
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int prot;
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if (get_physical_address(env, &phys_addr, &prot, addr, 0, ACCESS_INT) != 0)
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return -1;
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return phys_addr;
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}
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#endif
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#if !defined(CONFIG_USER_ONLY)
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#define MMUSUFFIX _mmu
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#define GETPC() (__builtin_return_address(0))
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#define SHIFT 0
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#include "softmmu_template.h"
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#define SHIFT 1
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#include "softmmu_template.h"
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#define SHIFT 2
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#include "softmmu_template.h"
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#define SHIFT 3
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#include "softmmu_template.h"
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/* try to fill the TLB and return an exception if error. If retaddr is
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NULL, it means that the function was called in C code (i.e. not
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from generated code or from helper.c) */
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/* XXX: fix it to restore all registers */
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void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr)
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{
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TranslationBlock *tb;
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CPUState *saved_env;
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unsigned long pc;
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int ret;
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|
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/* XXX: hack to restore env in all cases, even if not called from
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generated code */
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saved_env = env;
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env = cpu_single_env;
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#if 0
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{
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unsigned long tlb_addrr, tlb_addrw;
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int index;
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index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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tlb_addrr = env->tlb_read[is_user][index].address;
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tlb_addrw = env->tlb_write[is_user][index].address;
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if (loglevel) {
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fprintf(logfile,
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"%s 1 %p %p idx=%d addr=0x%08lx tbl_addr=0x%08lx 0x%08lx "
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"(0x%08lx 0x%08lx)\n", __func__, env,
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&env->tlb_read[is_user][index], index, addr,
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tlb_addrr, tlb_addrw, addr & TARGET_PAGE_MASK,
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tlb_addrr & (TARGET_PAGE_MASK | TLB_INVALID_MASK));
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}
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}
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#endif
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ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, is_user, 1);
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if (ret) {
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if (retaddr) {
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/* now we have a real cpu fault */
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pc = (unsigned long)retaddr;
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tb = tb_find_pc(pc);
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if (tb) {
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/* the PC is inside the translated code. It means that we have
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a virtual CPU fault */
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cpu_restore_state(tb, env, pc, NULL);
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}
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}
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do_raise_exception_err(env->exception_index, env->error_code);
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}
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#if 0
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{
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unsigned long tlb_addrr, tlb_addrw;
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int index;
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index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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tlb_addrr = env->tlb_read[is_user][index].address;
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tlb_addrw = env->tlb_write[is_user][index].address;
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printf("%s 2 %p %p idx=%d addr=0x%08lx tbl_addr=0x%08lx 0x%08lx "
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"(0x%08lx 0x%08lx)\n", __func__, env,
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&env->tlb_read[is_user][index], index, addr,
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tlb_addrr, tlb_addrw, addr & TARGET_PAGE_MASK,
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tlb_addrr & (TARGET_PAGE_MASK | TLB_INVALID_MASK));
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}
|
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#endif
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env = saved_env;
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}
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|
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void cpu_ppc_init_mmu(CPUState *env)
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{
|
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/* Nothing to do: all translation are disabled */
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}
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#endif
|
|
|
|
/* Perform address translation */
|
|
int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
|
|
int is_user, int is_softmmu)
|
|
{
|
|
uint32_t physical;
|
|
int prot;
|
|
int exception = 0, error_code = 0;
|
|
int access_type;
|
|
int ret = 0;
|
|
|
|
if (rw == 2) {
|
|
/* code access */
|
|
rw = 0;
|
|
access_type = ACCESS_CODE;
|
|
} else {
|
|
/* data access */
|
|
/* XXX: put correct access by using cpu_restore_state()
|
|
correctly */
|
|
access_type = ACCESS_INT;
|
|
// access_type = env->access_type;
|
|
}
|
|
if (env->user_mode_only) {
|
|
/* user mode only emulation */
|
|
ret = -2;
|
|
goto do_fault;
|
|
}
|
|
ret = get_physical_address(env, &physical, &prot,
|
|
address, rw, access_type);
|
|
if (ret == 0) {
|
|
ret = tlb_set_page(env, address & ~0xFFF, physical, prot,
|
|
is_user, is_softmmu);
|
|
} else if (ret < 0) {
|
|
do_fault:
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0)
|
|
cpu_dump_state(env, logfile, fprintf, 0);
|
|
#endif
|
|
if (access_type == ACCESS_CODE) {
|
|
exception = EXCP_ISI;
|
|
switch (ret) {
|
|
case -1:
|
|
/* No matches in page tables */
|
|
error_code = 0x40000000;
|
|
break;
|
|
case -2:
|
|
/* Access rights violation */
|
|
error_code = 0x08000000;
|
|
break;
|
|
case -3:
|
|
/* No execute protection violation */
|
|
error_code = 0x10000000;
|
|
break;
|
|
case -4:
|
|
/* Direct store exception */
|
|
/* No code fetch is allowed in direct-store areas */
|
|
error_code = 0x10000000;
|
|
break;
|
|
case -5:
|
|
/* No match in segment table */
|
|
exception = EXCP_ISEG;
|
|
error_code = 0;
|
|
break;
|
|
}
|
|
} else {
|
|
exception = EXCP_DSI;
|
|
switch (ret) {
|
|
case -1:
|
|
/* No matches in page tables */
|
|
error_code = 0x40000000;
|
|
break;
|
|
case -2:
|
|
/* Access rights violation */
|
|
error_code = 0x08000000;
|
|
break;
|
|
case -4:
|
|
/* Direct store exception */
|
|
switch (access_type) {
|
|
case ACCESS_FLOAT:
|
|
/* Floating point load/store */
|
|
exception = EXCP_ALIGN;
|
|
error_code = EXCP_ALIGN_FP;
|
|
break;
|
|
case ACCESS_RES:
|
|
/* lwarx, ldarx or srwcx. */
|
|
error_code = 0x04000000;
|
|
break;
|
|
case ACCESS_EXT:
|
|
/* eciwx or ecowx */
|
|
error_code = 0x04100000;
|
|
break;
|
|
default:
|
|
printf("DSI: invalid exception (%d)\n", ret);
|
|
exception = EXCP_PROGRAM;
|
|
error_code = EXCP_INVAL | EXCP_INVAL_INVAL;
|
|
break;
|
|
}
|
|
case -5:
|
|
/* No match in segment table */
|
|
exception = EXCP_DSEG;
|
|
error_code = 0;
|
|
break;
|
|
}
|
|
if (rw)
|
|
error_code |= 0x02000000;
|
|
/* Store fault address */
|
|
env->spr[SPR_DAR] = address;
|
|
env->spr[SPR_DSISR] = error_code;
|
|
}
|
|
#if 0
|
|
printf("%s: set exception to %d %02x\n",
|
|
__func__, exception, error_code);
|
|
#endif
|
|
env->exception_index = exception;
|
|
env->error_code = error_code;
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* BATs management */
|
|
#if !defined(FLUSH_ALL_TLBS)
|
|
static inline void do_invalidate_BAT (CPUPPCState *env,
|
|
target_ulong BATu, target_ulong mask)
|
|
{
|
|
target_ulong base, end, page;
|
|
base = BATu & ~0x0001FFFF;
|
|
end = base + mask + 0x00020000;
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel != 0)
|
|
fprintf(logfile, "Flush BAT from %08x to %08x (%08x)\n", base, end, mask);
|
|
#endif
|
|
for (page = base; page != end; page += TARGET_PAGE_SIZE)
|
|
tlb_flush_page(env, page);
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel != 0)
|
|
fprintf(logfile, "Flush done\n");
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
static inline void dump_store_bat (CPUPPCState *env, char ID, int ul, int nr,
|
|
target_ulong value)
|
|
{
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "Set %cBAT%d%c to 0x%08lx (0x%08lx)\n",
|
|
ID, nr, ul == 0 ? 'u' : 'l', (unsigned long)value,
|
|
(unsigned long)env->nip);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
target_ulong do_load_ibatu (CPUPPCState *env, int nr)
|
|
{
|
|
return env->IBAT[0][nr];
|
|
}
|
|
|
|
target_ulong do_load_ibatl (CPUPPCState *env, int nr)
|
|
{
|
|
return env->IBAT[1][nr];
|
|
}
|
|
|
|
void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
|
|
{
|
|
target_ulong mask;
|
|
|
|
dump_store_bat(env, 'I', 0, nr, value);
|
|
if (env->IBAT[0][nr] != value) {
|
|
mask = (value << 15) & 0x0FFE0000UL;
|
|
#if !defined(FLUSH_ALL_TLBS)
|
|
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
|
#endif
|
|
/* When storing valid upper BAT, mask BEPI and BRPN
|
|
* and invalidate all TLBs covered by this BAT
|
|
*/
|
|
mask = (value << 15) & 0x0FFE0000UL;
|
|
env->IBAT[0][nr] = (value & 0x00001FFFUL) |
|
|
(value & ~0x0001FFFFUL & ~mask);
|
|
env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
|
|
(env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
|
|
#if !defined(FLUSH_ALL_TLBS)
|
|
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
|
#endif
|
|
#if defined(FLUSH_ALL_TLBS)
|
|
tlb_flush(env, 1);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
|
|
{
|
|
dump_store_bat(env, 'I', 1, nr, value);
|
|
env->IBAT[1][nr] = value;
|
|
}
|
|
|
|
target_ulong do_load_dbatu (CPUPPCState *env, int nr)
|
|
{
|
|
return env->DBAT[0][nr];
|
|
}
|
|
|
|
target_ulong do_load_dbatl (CPUPPCState *env, int nr)
|
|
{
|
|
return env->DBAT[1][nr];
|
|
}
|
|
|
|
void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
|
|
{
|
|
target_ulong mask;
|
|
|
|
dump_store_bat(env, 'D', 0, nr, value);
|
|
if (env->DBAT[0][nr] != value) {
|
|
/* When storing valid upper BAT, mask BEPI and BRPN
|
|
* and invalidate all TLBs covered by this BAT
|
|
*/
|
|
mask = (value << 15) & 0x0FFE0000UL;
|
|
#if !defined(FLUSH_ALL_TLBS)
|
|
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
|
#endif
|
|
mask = (value << 15) & 0x0FFE0000UL;
|
|
env->DBAT[0][nr] = (value & 0x00001FFFUL) |
|
|
(value & ~0x0001FFFFUL & ~mask);
|
|
env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
|
|
(env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
|
|
#if !defined(FLUSH_ALL_TLBS)
|
|
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
|
#else
|
|
tlb_flush(env, 1);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
|
|
{
|
|
dump_store_bat(env, 'D', 1, nr, value);
|
|
env->DBAT[1][nr] = value;
|
|
}
|
|
|
|
static inline void invalidate_all_tlbs (CPUPPCState *env)
|
|
{
|
|
/* XXX: this needs to be completed for sotware driven TLB support */
|
|
tlb_flush(env, 1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* Special registers manipulation */
|
|
target_ulong do_load_nip (CPUPPCState *env)
|
|
{
|
|
return env->nip;
|
|
}
|
|
|
|
void do_store_nip (CPUPPCState *env, target_ulong value)
|
|
{
|
|
env->nip = value;
|
|
}
|
|
|
|
target_ulong do_load_sdr1 (CPUPPCState *env)
|
|
{
|
|
return env->sdr1;
|
|
}
|
|
|
|
void do_store_sdr1 (CPUPPCState *env, target_ulong value)
|
|
{
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "%s: 0x%08lx\n", __func__, (unsigned long)value);
|
|
}
|
|
#endif
|
|
if (env->sdr1 != value) {
|
|
env->sdr1 = value;
|
|
invalidate_all_tlbs(env);
|
|
}
|
|
}
|
|
|
|
target_ulong do_load_sr (CPUPPCState *env, int srnum)
|
|
{
|
|
return env->sr[srnum];
|
|
}
|
|
|
|
void do_store_sr (CPUPPCState *env, int srnum, target_ulong value)
|
|
{
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "%s: reg=%d 0x%08lx %08lx\n",
|
|
__func__, srnum, (unsigned long)value, env->sr[srnum]);
|
|
}
|
|
#endif
|
|
if (env->sr[srnum] != value) {
|
|
env->sr[srnum] = value;
|
|
#if !defined(FLUSH_ALL_TLBS) && 0
|
|
{
|
|
target_ulong page, end;
|
|
/* Invalidate 256 MB of virtual memory */
|
|
page = (16 << 20) * srnum;
|
|
end = page + (16 << 20);
|
|
for (; page != end; page += TARGET_PAGE_SIZE)
|
|
tlb_flush_page(env, page);
|
|
}
|
|
#else
|
|
invalidate_all_tlbs(env);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
uint32_t do_load_cr (CPUPPCState *env)
|
|
{
|
|
return (env->crf[0] << 28) |
|
|
(env->crf[1] << 24) |
|
|
(env->crf[2] << 20) |
|
|
(env->crf[3] << 16) |
|
|
(env->crf[4] << 12) |
|
|
(env->crf[5] << 8) |
|
|
(env->crf[6] << 4) |
|
|
(env->crf[7] << 0);
|
|
}
|
|
|
|
void do_store_cr (CPUPPCState *env, uint32_t value, uint32_t mask)
|
|
{
|
|
int i, sh;
|
|
|
|
for (i = 0, sh = 7; i < 8; i++, sh --) {
|
|
if (mask & (1 << sh))
|
|
env->crf[i] = (value >> (sh * 4)) & 0xFUL;
|
|
}
|
|
}
|
|
|
|
uint32_t do_load_xer (CPUPPCState *env)
|
|
{
|
|
return (xer_so << XER_SO) |
|
|
(xer_ov << XER_OV) |
|
|
(xer_ca << XER_CA) |
|
|
(xer_bc << XER_BC) |
|
|
(xer_cmp << XER_CMP);
|
|
}
|
|
|
|
void do_store_xer (CPUPPCState *env, uint32_t value)
|
|
{
|
|
xer_so = (value >> XER_SO) & 0x01;
|
|
xer_ov = (value >> XER_OV) & 0x01;
|
|
xer_ca = (value >> XER_CA) & 0x01;
|
|
xer_cmp = (value >> XER_CMP) & 0xFF;
|
|
xer_bc = (value >> XER_BC) & 0x3F;
|
|
}
|
|
|
|
target_ulong do_load_msr (CPUPPCState *env)
|
|
{
|
|
return (msr_vr << MSR_VR) |
|
|
(msr_ap << MSR_AP) |
|
|
(msr_sa << MSR_SA) |
|
|
(msr_key << MSR_KEY) |
|
|
(msr_pow << MSR_POW) |
|
|
(msr_tlb << MSR_TLB) |
|
|
(msr_ile << MSR_ILE) |
|
|
(msr_ee << MSR_EE) |
|
|
(msr_pr << MSR_PR) |
|
|
(msr_fp << MSR_FP) |
|
|
(msr_me << MSR_ME) |
|
|
(msr_fe0 << MSR_FE0) |
|
|
(msr_se << MSR_SE) |
|
|
(msr_be << MSR_BE) |
|
|
(msr_fe1 << MSR_FE1) |
|
|
(msr_al << MSR_AL) |
|
|
(msr_ip << MSR_IP) |
|
|
(msr_ir << MSR_IR) |
|
|
(msr_dr << MSR_DR) |
|
|
(msr_pe << MSR_PE) |
|
|
(msr_px << MSR_PX) |
|
|
(msr_ri << MSR_RI) |
|
|
(msr_le << MSR_LE);
|
|
}
|
|
|
|
void do_compute_hflags (CPUPPCState *env)
|
|
{
|
|
/* Compute current hflags */
|
|
env->hflags = (msr_pr << MSR_PR) | (msr_le << MSR_LE) |
|
|
(msr_fp << MSR_FP) | (msr_fe0 << MSR_FE0) | (msr_fe1 << MSR_FE1) |
|
|
(msr_vr << MSR_VR) | (msr_ap << MSR_AP) | (msr_sa << MSR_SA) |
|
|
(msr_se << MSR_SE) | (msr_be << MSR_BE);
|
|
}
|
|
|
|
void do_store_msr (CPUPPCState *env, target_ulong value)
|
|
{
|
|
value &= env->msr_mask;
|
|
if (((value >> MSR_IR) & 1) != msr_ir ||
|
|
((value >> MSR_DR) & 1) != msr_dr) {
|
|
/* Flush all tlb when changing translation mode
|
|
* When using software driven TLB, we may also need to reload
|
|
* all defined TLBs
|
|
*/
|
|
tlb_flush(env, 1);
|
|
env->interrupt_request |= CPU_INTERRUPT_EXITTB;
|
|
}
|
|
#if 0
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "%s: T0 %08lx\n", __func__, value);
|
|
}
|
|
#endif
|
|
msr_vr = (value >> MSR_VR) & 1;
|
|
msr_ap = (value >> MSR_AP) & 1;
|
|
msr_sa = (value >> MSR_SA) & 1;
|
|
msr_key = (value >> MSR_KEY) & 1;
|
|
msr_pow = (value >> MSR_POW) & 1;
|
|
msr_tlb = (value >> MSR_TLB) & 1;
|
|
msr_ile = (value >> MSR_ILE) & 1;
|
|
msr_ee = (value >> MSR_EE) & 1;
|
|
msr_pr = (value >> MSR_PR) & 1;
|
|
msr_fp = (value >> MSR_FP) & 1;
|
|
msr_me = (value >> MSR_ME) & 1;
|
|
msr_fe0 = (value >> MSR_FE0) & 1;
|
|
msr_se = (value >> MSR_SE) & 1;
|
|
msr_be = (value >> MSR_BE) & 1;
|
|
msr_fe1 = (value >> MSR_FE1) & 1;
|
|
msr_al = (value >> MSR_AL) & 1;
|
|
msr_ip = (value >> MSR_IP) & 1;
|
|
msr_ir = (value >> MSR_IR) & 1;
|
|
msr_dr = (value >> MSR_DR) & 1;
|
|
msr_pe = (value >> MSR_PE) & 1;
|
|
msr_px = (value >> MSR_PX) & 1;
|
|
msr_ri = (value >> MSR_RI) & 1;
|
|
msr_le = (value >> MSR_LE) & 1;
|
|
do_compute_hflags(env);
|
|
}
|
|
|
|
float64 do_load_fpscr (CPUPPCState *env)
|
|
{
|
|
/* The 32 MSB of the target fpr are undefined.
|
|
* They'll be zero...
|
|
*/
|
|
union {
|
|
float64 d;
|
|
struct {
|
|
uint32_t u[2];
|
|
} s;
|
|
} u;
|
|
int i;
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
#define WORD0 0
|
|
#define WORD1 1
|
|
#else
|
|
#define WORD0 1
|
|
#define WORD1 0
|
|
#endif
|
|
u.s.u[WORD0] = 0;
|
|
u.s.u[WORD1] = 0;
|
|
for (i = 0; i < 8; i++)
|
|
u.s.u[WORD1] |= env->fpscr[i] << (4 * i);
|
|
return u.d;
|
|
}
|
|
|
|
void do_store_fpscr (CPUPPCState *env, float64 f, uint32_t mask)
|
|
{
|
|
/*
|
|
* We use only the 32 LSB of the incoming fpr
|
|
*/
|
|
union {
|
|
double d;
|
|
struct {
|
|
uint32_t u[2];
|
|
} s;
|
|
} u;
|
|
int i, rnd_type;
|
|
|
|
u.d = f;
|
|
if (mask & 0x80)
|
|
env->fpscr[0] = (env->fpscr[0] & 0x9) | ((u.s.u[WORD1] >> 28) & ~0x9);
|
|
for (i = 1; i < 7; i++) {
|
|
if (mask & (1 << (7 - i)))
|
|
env->fpscr[i] = (u.s.u[WORD1] >> (4 * (7 - i))) & 0xF;
|
|
}
|
|
/* TODO: update FEX & VX */
|
|
/* Set rounding mode */
|
|
switch (env->fpscr[0] & 0x3) {
|
|
case 0:
|
|
/* Best approximation (round to nearest) */
|
|
rnd_type = float_round_nearest_even;
|
|
break;
|
|
case 1:
|
|
/* Smaller magnitude (round toward zero) */
|
|
rnd_type = float_round_to_zero;
|
|
break;
|
|
case 2:
|
|
/* Round toward +infinite */
|
|
rnd_type = float_round_up;
|
|
break;
|
|
default:
|
|
case 3:
|
|
/* Round toward -infinite */
|
|
rnd_type = float_round_down;
|
|
break;
|
|
}
|
|
set_float_rounding_mode(rnd_type, &env->fp_status);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* Exception processing */
|
|
#if defined (CONFIG_USER_ONLY)
|
|
void do_interrupt (CPUState *env)
|
|
{
|
|
env->exception_index = -1;
|
|
}
|
|
#else
|
|
static void dump_syscall(CPUState *env)
|
|
{
|
|
fprintf(logfile, "syscall r0=0x%08x r3=0x%08x r4=0x%08x r5=0x%08x r6=0x%08x nip=0x%08x\n",
|
|
env->gpr[0], env->gpr[3], env->gpr[4],
|
|
env->gpr[5], env->gpr[6], env->nip);
|
|
}
|
|
|
|
void do_interrupt (CPUState *env)
|
|
{
|
|
target_ulong msr, *srr_0, *srr_1, tmp;
|
|
int excp;
|
|
|
|
excp = env->exception_index;
|
|
msr = do_load_msr(env);
|
|
/* The default is to use SRR0 & SRR1 to save the exception context */
|
|
srr_0 = &env->spr[SPR_SRR0];
|
|
srr_1 = &env->spr[SPR_SRR1];
|
|
#if defined (DEBUG_EXCEPTIONS)
|
|
if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) {
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "Raise exception at 0x%08lx => 0x%08x (%02x)\n",
|
|
(unsigned long)env->nip, excp, env->error_code);
|
|
cpu_dump_state(env, logfile, fprintf, 0);
|
|
}
|
|
}
|
|
#endif
|
|
if (loglevel & CPU_LOG_INT) {
|
|
fprintf(logfile, "Raise exception at 0x%08lx => 0x%08x (%02x)\n",
|
|
(unsigned long)env->nip, excp, env->error_code);
|
|
}
|
|
msr_pow = 0;
|
|
/* Generate informations in save/restore registers */
|
|
switch (excp) {
|
|
/* Generic PowerPC exceptions */
|
|
case EXCP_RESET: /* 0x0100 */
|
|
if (PPC_EXCP(env) != PPC_FLAGS_EXCP_40x) {
|
|
if (msr_ip)
|
|
excp += 0xFFC00;
|
|
excp |= 0xFFC00000;
|
|
} else {
|
|
srr_0 = &env->spr[SPR_40x_SRR2];
|
|
srr_1 = &env->spr[SPR_40x_SRR3];
|
|
}
|
|
goto store_next;
|
|
case EXCP_MACHINE_CHECK: /* 0x0200 */
|
|
if (msr_me == 0) {
|
|
cpu_abort(env, "Machine check exception while not allowed\n");
|
|
}
|
|
if (PPC_EXCP(env) == PPC_FLAGS_EXCP_40x) {
|
|
srr_0 = &env->spr[SPR_40x_SRR2];
|
|
srr_1 = &env->spr[SPR_40x_SRR3];
|
|
}
|
|
msr_me = 0;
|
|
break;
|
|
case EXCP_DSI: /* 0x0300 */
|
|
/* Store exception cause */
|
|
/* data location address has been stored
|
|
* when the fault has been detected
|
|
*/
|
|
msr &= ~0xFFFF0000;
|
|
#if defined (DEBUG_EXCEPTIONS)
|
|
if (loglevel) {
|
|
fprintf(logfile, "DSI exception: DSISR=0x%08x, DAR=0x%08x\n",
|
|
env->spr[SPR_DSISR], env->spr[SPR_DAR]);
|
|
} else {
|
|
printf("DSI exception: DSISR=0x%08x, DAR=0x%08x\n",
|
|
env->spr[SPR_DSISR], env->spr[SPR_DAR]);
|
|
}
|
|
#endif
|
|
goto store_next;
|
|
case EXCP_ISI: /* 0x0400 */
|
|
/* Store exception cause */
|
|
msr &= ~0xFFFF0000;
|
|
msr |= env->error_code;
|
|
#if defined (DEBUG_EXCEPTIONS)
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "ISI exception: msr=0x%08x, nip=0x%08x\n",
|
|
msr, env->nip);
|
|
}
|
|
#endif
|
|
goto store_next;
|
|
case EXCP_EXTERNAL: /* 0x0500 */
|
|
if (msr_ee == 0) {
|
|
#if defined (DEBUG_EXCEPTIONS)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "Skipping hardware interrupt\n");
|
|
}
|
|
#endif
|
|
/* Requeue it */
|
|
env->interrupt_request |= CPU_INTERRUPT_HARD;
|
|
return;
|
|
}
|
|
goto store_next;
|
|
case EXCP_ALIGN: /* 0x0600 */
|
|
if (PPC_EXCP(env) != PPC_FLAGS_EXCP_601) {
|
|
/* Store exception cause */
|
|
/* Get rS/rD and rA from faulting opcode */
|
|
env->spr[SPR_DSISR] |=
|
|
(ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
|
|
/* data location address has been stored
|
|
* when the fault has been detected
|
|
*/
|
|
} else {
|
|
/* IO error exception on PowerPC 601 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"601 IO error exception is not implemented yet !\n");
|
|
}
|
|
goto store_current;
|
|
case EXCP_PROGRAM: /* 0x0700 */
|
|
msr &= ~0xFFFF0000;
|
|
switch (env->error_code & ~0xF) {
|
|
case EXCP_FP:
|
|
if (msr_fe0 == 0 && msr_fe1 == 0) {
|
|
#if defined (DEBUG_EXCEPTIONS)
|
|
printf("Ignore floating point exception\n");
|
|
#endif
|
|
return;
|
|
}
|
|
msr |= 0x00100000;
|
|
/* Set FX */
|
|
env->fpscr[7] |= 0x8;
|
|
/* Finally, update FEX */
|
|
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
|
|
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
|
|
env->fpscr[7] |= 0x4;
|
|
break;
|
|
case EXCP_INVAL:
|
|
// printf("Invalid instruction at 0x%08x\n", env->nip);
|
|
msr |= 0x00080000;
|
|
break;
|
|
case EXCP_PRIV:
|
|
msr |= 0x00040000;
|
|
break;
|
|
case EXCP_TRAP:
|
|
msr |= 0x00020000;
|
|
break;
|
|
default:
|
|
/* Should never occur */
|
|
break;
|
|
}
|
|
msr |= 0x00010000;
|
|
goto store_current;
|
|
case EXCP_NO_FP: /* 0x0800 */
|
|
msr &= ~0xFFFF0000;
|
|
goto store_current;
|
|
case EXCP_DECR:
|
|
if (msr_ee == 0) {
|
|
#if 1
|
|
/* Requeue it */
|
|
env->interrupt_request |= CPU_INTERRUPT_TIMER;
|
|
#endif
|
|
return;
|
|
}
|
|
goto store_next;
|
|
case EXCP_SYSCALL: /* 0x0C00 */
|
|
/* NOTE: this is a temporary hack to support graphics OSI
|
|
calls from the MOL driver */
|
|
if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
|
|
env->osi_call) {
|
|
if (env->osi_call(env) != 0)
|
|
return;
|
|
}
|
|
if (loglevel & CPU_LOG_INT) {
|
|
dump_syscall(env);
|
|
}
|
|
goto store_next;
|
|
case EXCP_TRACE: /* 0x0D00 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "Trace exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case EXCP_PERF: /* 0x0F00 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"Performance counter exception is not implemented yet !\n");
|
|
goto store_next;
|
|
/* 32 bits PowerPC specific exceptions */
|
|
case EXCP_FP_ASSIST: /* 0x0E00 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "Floating point assist exception "
|
|
"is not implemented yet !\n");
|
|
goto store_next;
|
|
/* 64 bits PowerPC exceptions */
|
|
case EXCP_DSEG: /* 0x0380 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "Data segment exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case EXCP_ISEG: /* 0x0480 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"Instruction segment exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case EXCP_HDECR: /* 0x0980 */
|
|
if (msr_ee == 0) {
|
|
#if 1
|
|
/* Requeue it */
|
|
env->interrupt_request |= CPU_INTERRUPT_TIMER;
|
|
#endif
|
|
return;
|
|
}
|
|
cpu_abort(env,
|
|
"Hypervisor decrementer exception is not implemented yet !\n");
|
|
goto store_next;
|
|
/* Implementation specific exceptions */
|
|
case 0x0A00:
|
|
if (PPC_EXCP(env) != PPC_FLAGS_EXCP_602) {
|
|
/* Critical interrupt on G2 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "G2 critical interrupt is not implemented yet !\n");
|
|
goto store_next;
|
|
} else {
|
|
cpu_abort(env, "Invalid exception 0x0A00 !\n");
|
|
}
|
|
return;
|
|
case 0x0F20:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* APU unavailable on 405 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"APU unavailable exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_74xx:
|
|
/* Altivec unavailable */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "Altivec unavailable exception "
|
|
"is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x0F20 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1000:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* PIT on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "40x PIT exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
/* ITLBMISS on 602/603 */
|
|
msr &= ~0xF00F0000;
|
|
msr_tgpr = 1;
|
|
goto store_gprs;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1000 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1010:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* FIT on 4xx */
|
|
cpu_abort(env, "40x FIT exception is not implemented yet !\n");
|
|
/* XXX: TODO */
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1010 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1020:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* Watchdog on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"40x watchdog exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1020 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1100:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* DTLBMISS on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"40x DTLBMISS exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
/* DLTLBMISS on 602/603 */
|
|
msr &= ~0xF00F0000;
|
|
msr_tgpr = 1;
|
|
goto store_gprs;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1100 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1200:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* ITLBMISS on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"40x ITLBMISS exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
/* DSTLBMISS on 602/603 */
|
|
msr &= ~0xF00F0000;
|
|
msr_tgpr = 1;
|
|
store_gprs:
|
|
#if defined (DEBUG_SOFTWARE_TLB)
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "6xx %sTLB miss: IM %08x DM %08x IC %08x "
|
|
"DC %08x H1 %08x H2 %08x %08x\n",
|
|
excp == 0x1000 ? "I" : excp == 0x1100 ? "DL" : "DS",
|
|
env->spr[SPR_IMISS], env->spr[SPR_DMISS],
|
|
env->spr[SPR_ICMP], env->spr[SPR_DCMP],
|
|
env->spr[SPR_DHASH1], env->spr[SPR_DHASH2],
|
|
env->error_code);
|
|
}
|
|
#endif
|
|
/* Swap temporary saved registers with GPRs */
|
|
tmp = env->gpr[0];
|
|
env->gpr[0] = env->tgpr[0];
|
|
env->tgpr[0] = tmp;
|
|
tmp = env->gpr[1];
|
|
env->gpr[1] = env->tgpr[1];
|
|
env->tgpr[1] = tmp;
|
|
tmp = env->gpr[2];
|
|
env->gpr[2] = env->tgpr[2];
|
|
env->tgpr[2] = tmp;
|
|
tmp = env->gpr[3];
|
|
env->gpr[3] = env->tgpr[3];
|
|
env->tgpr[3] = tmp;
|
|
msr |= env->crf[0] << 28;
|
|
msr |= env->error_code; /* key, D/I, S/L bits */
|
|
/* Set way using a LRU mechanism */
|
|
msr |= (env->last_way ^ 1) << 17;
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1200 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1300:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_601:
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
case PPC_FLAGS_EXCP_604:
|
|
case PPC_FLAGS_EXCP_7x0:
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* IABR on 6xx/7xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "IABR exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1300 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1400:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_601:
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
case PPC_FLAGS_EXCP_604:
|
|
case PPC_FLAGS_EXCP_7x0:
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* SMI on 6xx/7xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "SMI exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1400 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1500:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_602:
|
|
/* Watchdog on 602 */
|
|
cpu_abort(env,
|
|
"602 watchdog exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_970:
|
|
/* Soft patch exception on 970 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"970 soft-patch exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_74xx:
|
|
/* VPU assist on 74xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "VPU assist exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1500 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1600:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_602:
|
|
/* Emulation trap on 602 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "602 emulation trap exception "
|
|
"is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_970:
|
|
/* Maintenance exception on 970 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"970 maintenance exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1600 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1700:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_7x0:
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* Thermal management interrupt on G3 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "G3 thermal management exception "
|
|
"is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_970:
|
|
/* VPU assist on 970 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"970 VPU assist exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1700 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1800:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_970:
|
|
/* Thermal exception on 970 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "970 thermal management exception "
|
|
"is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x2000:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* DEBUG on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "40x debug exception is not implemented yet !\n");
|
|
goto store_next;
|
|
case PPC_FLAGS_EXCP_601:
|
|
/* Run mode exception on 601 */
|
|
/* XXX: TODO */
|
|
cpu_abort(env,
|
|
"601 run mode exception is not implemented yet !\n");
|
|
goto store_next;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1800 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
/* Other exceptions */
|
|
/* Qemu internal exceptions:
|
|
* we should never come here with those values: abort execution
|
|
*/
|
|
default:
|
|
cpu_abort(env, "Invalid exception: code %d (%04x)\n", excp, excp);
|
|
return;
|
|
store_current:
|
|
/* save current instruction location */
|
|
*srr_0 = (env->nip - 4) & 0xFFFFFFFFULL;
|
|
break;
|
|
store_next:
|
|
/* save next instruction location */
|
|
*srr_0 = env->nip & 0xFFFFFFFFULL;
|
|
break;
|
|
}
|
|
/* Save msr */
|
|
*srr_1 = msr;
|
|
/* If we disactivated any translation, flush TLBs */
|
|
if (msr_ir || msr_dr) {
|
|
tlb_flush(env, 1);
|
|
}
|
|
/* reload MSR with correct bits */
|
|
msr_ee = 0;
|
|
msr_pr = 0;
|
|
msr_fp = 0;
|
|
msr_fe0 = 0;
|
|
msr_se = 0;
|
|
msr_be = 0;
|
|
msr_fe1 = 0;
|
|
msr_ir = 0;
|
|
msr_dr = 0;
|
|
msr_ri = 0;
|
|
msr_le = msr_ile;
|
|
msr_sf = msr_isf;
|
|
do_compute_hflags(env);
|
|
/* Jump to handler */
|
|
env->nip = excp;
|
|
env->exception_index = EXCP_NONE;
|
|
/* ensure that no TB jump will be modified as
|
|
the program flow was changed */
|
|
#ifdef __sparc__
|
|
tmp_T0 = 0;
|
|
#else
|
|
T0 = 0;
|
|
#endif
|
|
env->interrupt_request |= CPU_INTERRUPT_EXITTB;
|
|
}
|
|
#endif /* !CONFIG_USER_ONLY */
|