76a66253e5
- Add status file to make regression tracking easier
- Move all micro-operations helpers definitions into a separate header:
should never be seen outside of op.c
- Update copyrights
- Add new / missing PowerPC CPU definitions
- Add definitions for PowerPC BookE
- Add support for PowerPC 6xx/7xx software driven TLBs
Allow use of PowerPC 603 as an example
- Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602
and BookE support
- Avoid compiling priviledged only resources support for user-mode emulation
- Remove unused helpers / micro-ops / dead code
- Add instructions usage statistics dump: useful to figure which instructions
need strong optimizations.
- Micro-operation fixes:
* add missing RETURN in some micro-ops
* fix prototypes
* use softfloat routines for all floating-point operations
* fix tlbie instruction
* move some huge micro-operations into helpers
- emulation fixes:
* fix inverted opcodes for fcmpo / fcmpu
* condition register update is always to be done after the whole
instruction has completed
* add missing NIP updates when calling helpers that may generate an
exception
- optimizations and improvments:
* optimize very often used instructions (li, mr, rlwixx...)
* remove specific micro-ops for rarely used instructions
* add routines for addresses computations to avoid bugs due to multiple
different implementations
* fix TB linking: do not reset T0 at the end of every TB.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
1716 lines
53 KiB
C
1716 lines
53 KiB
C
/*
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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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if (rw == 2) {
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exception = EXCP_ISI;
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error_code = 0;
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} else {
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exception = EXCP_DSI;
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error_code = 0;
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if (rw)
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error_code |= 0x02000000;
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env->spr[SPR_DAR] = address;
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env->spr[SPR_DSISR] = error_code;
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}
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env->exception_index = exception;
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env->error_code = error_code;
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return 1;
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}
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target_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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static int pte_check (mmu_ctx_t *ctx,
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target_ulong pte0, target_ulong pte1, int h, int rw)
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{
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int access, ret;
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access = 0;
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ret = -1;
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/* Check validity and table match */
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if (pte_is_valid(pte0) && (h == ((pte0 >> 6) & 1))) {
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/* Check vsid & api */
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if ((pte0 & PTE_PTEM_MASK) == ctx->ptem) {
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if (ctx->raddr != (target_ulong)-1) {
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/* all matches should have equal RPN, WIMG & PP */
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if ((ctx->raddr & PTE_CHECK_MASK) != (pte1 & PTE_CHECK_MASK)) {
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if (loglevel > 0)
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fprintf(logfile, "Bad RPN/WIMG/PP\n");
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return -3;
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}
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}
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/* Compute access rights */
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if (ctx->key == 0) {
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access = PAGE_READ;
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if ((pte1 & 0x00000003) != 0x3)
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access |= PAGE_WRITE;
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} else {
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switch (pte1 & 0x00000003) {
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case 0x0:
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access = 0;
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break;
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case 0x1:
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case 0x3:
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access = PAGE_READ;
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break;
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case 0x2:
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access = PAGE_READ | PAGE_WRITE;
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break;
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}
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}
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/* Keep the matching PTE informations */
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ctx->raddr = pte1;
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ctx->prot = access;
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if ((rw == 0 && (access & PAGE_READ)) ||
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(rw == 1 && (access & PAGE_WRITE))) {
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/* Access granted */
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#if defined (DEBUG_MMU)
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if (loglevel > 0)
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fprintf(logfile, "PTE access granted !\n");
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#endif
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ret = 0;
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} else {
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/* Access right violation */
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#if defined (DEBUG_MMU)
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if (loglevel > 0)
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fprintf(logfile, "PTE access rejected\n");
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#endif
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ret = -2;
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}
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}
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}
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return ret;
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}
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static int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p,
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int ret, int rw)
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{
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int store = 0;
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/* Update page flags */
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if (!(*pte1p & 0x00000100)) {
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/* Update accessed flag */
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*pte1p |= 0x00000100;
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store = 1;
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}
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if (!(*pte1p & 0x00000080)) {
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if (rw == 1 && ret == 0) {
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/* Update changed flag */
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*pte1p |= 0x00000080;
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store = 1;
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} else {
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/* Force page fault for first write access */
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ctx->prot &= ~PAGE_WRITE;
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}
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}
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return store;
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}
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/* Software driven TLB helpers */
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static int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr,
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int way, int is_code)
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{
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int nr;
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|
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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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ppc_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];
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#if !defined(FLUSH_ALL_TLBS)
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tlb_flush_page(env, tlb->EPN);
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#endif
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pte_invalidate(&tlb->pte0);
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}
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#if defined(FLUSH_ALL_TLBS)
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tlb_flush(env, 1);
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#endif
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}
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static inline void __ppc6xx_tlb_invalidate_virt (CPUState *env,
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target_ulong eaddr,
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int is_code, int match_epn)
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{
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ppc_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];
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if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) {
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fprintf(logfile, "TLB invalidate %d/%d %08x\n",
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nr, env->nb_tlb, eaddr);
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}
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#endif
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pte_invalidate(&tlb->pte0);
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tlb_flush_page(env, tlb->EPN);
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}
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}
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#else
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/* XXX: PowerPC specification say this is valid as well */
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ppc6xx_tlb_invalidate_all(env);
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#endif
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}
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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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ppc_tlb_t *tlb;
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int nr;
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nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
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tlb = &env->tlb[nr];
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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 %08lx PTE0 %08lx PTE1 %08lx\n",
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nr, env->nb_tlb, (unsigned long)EPN,
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(unsigned long)pte0, (unsigned long)pte1);
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}
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#endif
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/* Invalidate any pending reference in Qemu for this virtual address */
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__ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
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tlb->pte0 = pte0;
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tlb->pte1 = pte1;
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tlb->EPN = EPN;
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tlb->PID = 0;
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tlb->size = 1;
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/* Store last way for LRU mechanism */
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env->last_way = way;
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}
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static int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx,
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target_ulong eaddr, int rw, int access_type)
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{
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ppc_tlb_t *tlb;
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int nr, best, way;
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int ret;
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|
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best = -1;
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ret = -1; /* No TLB found */
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for (way = 0; way < env->nb_ways; way++) {
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nr = ppc6xx_tlb_getnum(env, eaddr, way,
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access_type == ACCESS_CODE ? 1 : 0);
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tlb = &env->tlb[nr];
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/* This test "emulates" the PTE index match for hardware TLBs */
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if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) {
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fprintf(logfile, "TLB %d/%d %s [%08x %08x] <> %08x\n",
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nr, env->nb_tlb,
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pte_is_valid(tlb->pte0) ? "valid" : "inval",
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tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
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}
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#endif
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continue;
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}
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) {
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fprintf(logfile, "TLB %d/%d %s %08x <> %08x %08x %c %c\n",
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nr, env->nb_tlb,
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pte_is_valid(tlb->pte0) ? "valid" : "inval",
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tlb->EPN, eaddr, tlb->pte1,
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rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
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}
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#endif
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switch (pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw)) {
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case -3:
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/* TLB inconsistency */
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return -1;
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case -2:
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/* Access violation */
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|
ret = -2;
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best = nr;
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break;
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case -1:
|
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default:
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/* No match */
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break;
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case 0:
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|
/* access granted */
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|
/* XXX: we should go on looping to check all TLBs consistency
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* but we can speed-up the whole thing as the
|
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* result would be undefined if TLBs are not consistent.
|
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*/
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ret = 0;
|
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best = nr;
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goto done;
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}
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}
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if (best != -1) {
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done:
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#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel > 0) {
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fprintf(logfile, "found TLB at addr 0x%08lx prot=0x%01x ret=%d\n",
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ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
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}
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#endif
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/* Update page flags */
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pte_update_flags(ctx, &env->tlb[best].pte1, ret, rw);
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}
|
|
|
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return ret;
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}
|
|
|
|
/* Perform BAT hit & translation */
|
|
static int get_bat (CPUState *env, mmu_ctx_t *ctx,
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target_ulong virtual, int rw, int type)
|
|
{
|
|
target_ulong *BATlt, *BATut, *BATu, *BATl;
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|
target_ulong 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
|
|
switch (type) {
|
|
case ACCESS_CODE:
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BATlt = env->IBAT[1];
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|
BATut = env->IBAT[0];
|
|
break;
|
|
default:
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|
BATlt = env->DBAT[1];
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|
BATut = env->DBAT[0];
|
|
break;
|
|
}
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "%s...: %cBAT v 0x%08x\n", __func__,
|
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type == ACCESS_CODE ? 'I' : 'D', virtual);
|
|
}
|
|
#endif
|
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base = virtual & 0xFFFC0000;
|
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for (i = 0; i < 4; i++) {
|
|
BATu = &BATut[i];
|
|
BATl = &BATlt[i];
|
|
BEPIu = *BATu & 0xF0000000;
|
|
BEPIl = *BATu & 0x0FFE0000;
|
|
bl = (*BATu & 0x00001FFC) << 15;
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
|
|
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
|
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*BATu, *BATl);
|
|
}
|
|
#endif
|
|
if ((virtual & 0xF0000000) == BEPIu &&
|
|
((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
|
|
/* BAT matches */
|
|
if ((msr_pr == 0 && (*BATu & 0x00000002)) ||
|
|
(msr_pr == 1 && (*BATu & 0x00000001))) {
|
|
/* Get physical address */
|
|
ctx->raddr = (*BATl & 0xF0000000) |
|
|
((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
|
|
(virtual & 0x0001F000);
|
|
if (*BATl & 0x00000001)
|
|
ctx->prot = PAGE_READ;
|
|
if (*BATl & 0x00000002)
|
|
ctx->prot = PAGE_WRITE | PAGE_READ;
|
|
#if defined (DEBUG_BATS)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "BAT %d match: r 0x%08x prot=%c%c\n",
|
|
i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
|
|
ctx->prot & PAGE_WRITE ? 'W' : '-');
|
|
}
|
|
#endif
|
|
ret = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ret < 0) {
|
|
#if defined (DEBUG_BATS)
|
|
printf("no BAT match for 0x%08x:\n", virtual);
|
|
for (i = 0; i < 4; i++) {
|
|
BATu = &BATut[i];
|
|
BATl = &BATlt[i];
|
|
BEPIu = *BATu & 0xF0000000;
|
|
BEPIl = *BATu & 0x0FFE0000;
|
|
bl = (*BATu & 0x00001FFC) << 15;
|
|
printf("%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x \n\t"
|
|
"0x%08x 0x%08x 0x%08x\n",
|
|
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
|
|
*BATu, *BATl, BEPIu, BEPIl, bl);
|
|
}
|
|
#endif
|
|
}
|
|
/* No hit */
|
|
return ret;
|
|
}
|
|
|
|
/* PTE table lookup */
|
|
static int find_pte (mmu_ctx_t *ctx, int h, int rw)
|
|
{
|
|
target_ulong base, pte0, pte1;
|
|
int i, good = -1;
|
|
int ret;
|
|
|
|
ret = -1; /* No entry found */
|
|
base = ctx->pg_addr[h];
|
|
for (i = 0; i < 8; i++) {
|
|
pte0 = ldl_phys(base + (i * 8));
|
|
pte1 = ldl_phys(base + (i * 8) + 4);
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "Load pte from 0x%08x => 0x%08x 0x%08x "
|
|
"%d %d %d 0x%08x\n", base + (i * 8), pte0, pte1,
|
|
pte0 >> 31, h, (pte0 >> 6) & 1, ctx->ptem);
|
|
}
|
|
#endif
|
|
switch (pte_check(ctx, pte0, pte1, h, rw)) {
|
|
case -3:
|
|
/* PTE inconsistency */
|
|
return -1;
|
|
case -2:
|
|
/* Access violation */
|
|
ret = -2;
|
|
good = i;
|
|
break;
|
|
case -1:
|
|
default:
|
|
/* No PTE match */
|
|
break;
|
|
case 0:
|
|
/* access granted */
|
|
/* XXX: we should go on looping to check all PTEs consistency
|
|
* but if we can speed-up the whole thing as the
|
|
* result would be undefined if PTEs are not consistent.
|
|
*/
|
|
ret = 0;
|
|
good = i;
|
|
goto done;
|
|
}
|
|
}
|
|
if (good != -1) {
|
|
done:
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
|
|
ctx->raddr, ctx->prot, ret);
|
|
}
|
|
#endif
|
|
/* Update page flags */
|
|
pte1 = ctx->raddr;
|
|
if (pte_update_flags(ctx, &pte1, ret, rw) == 1)
|
|
stl_phys_notdirty(base + (good * 8) + 4, pte1);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
|
|
target_phys_addr_t hash,
|
|
target_phys_addr_t mask)
|
|
{
|
|
return (sdr1 & 0xFFFF0000) | (hash & mask);
|
|
}
|
|
|
|
/* Perform segment based translation */
|
|
static int get_segment (CPUState *env, mmu_ctx_t *ctx,
|
|
target_ulong eaddr, int rw, int type)
|
|
{
|
|
target_phys_addr_t sdr, hash, mask;
|
|
target_ulong sr, vsid, pgidx;
|
|
int ret = -1, ret2;
|
|
|
|
sr = env->sr[eaddr >> 28];
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "Check segment v=0x%08x %d 0x%08x nip=0x%08x "
|
|
"lr=0x%08x ir=%d dr=%d pr=%d %d t=%d\n",
|
|
eaddr, eaddr >> 28, sr, env->nip,
|
|
env->lr, msr_ir, msr_dr, msr_pr, rw, type);
|
|
}
|
|
#endif
|
|
ctx->key = (((sr & 0x20000000) && msr_pr == 1) ||
|
|
((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0;
|
|
if ((sr & 0x80000000) == 0) {
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0)
|
|
fprintf(logfile, "pte segment: key=%d n=0x%08x\n",
|
|
ctx->key, sr & 0x10000000);
|
|
#endif
|
|
/* Check if instruction fetch is allowed, if needed */
|
|
if (type != ACCESS_CODE || (sr & 0x10000000) == 0) {
|
|
/* Page address translation */
|
|
pgidx = (eaddr >> TARGET_PAGE_BITS) & 0xFFFF;
|
|
vsid = sr & 0x00FFFFFF;
|
|
hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6;
|
|
/* Primary table address */
|
|
sdr = env->sdr1;
|
|
mask = ((sdr & 0x000001FF) << 16) | 0xFFC0;
|
|
ctx->pg_addr[0] = get_pgaddr(sdr, hash, mask);
|
|
/* Secondary table address */
|
|
hash = (~hash) & 0x01FFFFC0;
|
|
ctx->pg_addr[1] = get_pgaddr(sdr, hash, mask);
|
|
ctx->ptem = (vsid << 7) | (pgidx >> 10);
|
|
/* Initialize real address with an invalid value */
|
|
ctx->raddr = (target_ulong)-1;
|
|
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
|
/* Software TLB search */
|
|
ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
|
|
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) {
|
|
/* XXX: TODO */
|
|
} else {
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "0 sdr1=0x%08x vsid=0x%06x api=0x%04x "
|
|
"hash=0x%07x pg_addr=0x%08x\n", sdr, vsid, pgidx,
|
|
hash, ctx->pg_addr[0]);
|
|
}
|
|
#endif
|
|
/* Primary table lookup */
|
|
ret = find_pte(ctx, 0, rw);
|
|
if (ret < 0) {
|
|
/* Secondary table lookup */
|
|
#if defined (DEBUG_MMU)
|
|
if (eaddr != 0xEFFFFFFF && loglevel > 0) {
|
|
fprintf(logfile,
|
|
"1 sdr1=0x%08x vsid=0x%06x api=0x%04x "
|
|
"hash=0x%05x pg_addr=0x%08x\n", sdr, vsid,
|
|
pgidx, hash, ctx->pg_addr[1]);
|
|
}
|
|
#endif
|
|
ret2 = find_pte(ctx, 1, rw);
|
|
if (ret2 != -1)
|
|
ret = ret2;
|
|
}
|
|
}
|
|
} else {
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0)
|
|
fprintf(logfile, "No access allowed\n");
|
|
#endif
|
|
ret = -3;
|
|
}
|
|
} else {
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0)
|
|
fprintf(logfile, "direct store...\n");
|
|
#endif
|
|
/* Direct-store segment : absolutely *BUGGY* for now */
|
|
switch (type) {
|
|
case ACCESS_INT:
|
|
/* Integer load/store : only access allowed */
|
|
break;
|
|
case ACCESS_CODE:
|
|
/* No code fetch is allowed in direct-store areas */
|
|
return -4;
|
|
case ACCESS_FLOAT:
|
|
/* Floating point load/store */
|
|
return -4;
|
|
case ACCESS_RES:
|
|
/* lwarx, ldarx or srwcx. */
|
|
return -4;
|
|
case ACCESS_CACHE:
|
|
/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
|
|
/* Should make the instruction do no-op.
|
|
* As it already do no-op, it's quite easy :-)
|
|
*/
|
|
ctx->raddr = eaddr;
|
|
return 0;
|
|
case ACCESS_EXT:
|
|
/* eciwx or ecowx */
|
|
return -4;
|
|
default:
|
|
if (logfile) {
|
|
fprintf(logfile, "ERROR: instruction should not need "
|
|
"address translation\n");
|
|
}
|
|
printf("ERROR: instruction should not need "
|
|
"address translation\n");
|
|
return -4;
|
|
}
|
|
if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
|
|
ctx->raddr = eaddr;
|
|
ret = 2;
|
|
} else {
|
|
ret = -2;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int check_physical (CPUState *env, mmu_ctx_t *ctx,
|
|
target_ulong eaddr, int rw)
|
|
{
|
|
int in_plb, ret;
|
|
|
|
ctx->raddr = eaddr;
|
|
ctx->prot = PAGE_READ;
|
|
ret = 0;
|
|
if (unlikely(msr_pe != 0 && PPC_MMU(env) == PPC_FLAGS_MMU_403)) {
|
|
/* 403 family add some particular protections,
|
|
* using PBL/PBU registers for accesses with no translation.
|
|
*/
|
|
in_plb =
|
|
/* Check PLB validity */
|
|
(env->pb[0] < env->pb[1] &&
|
|
/* and address in plb area */
|
|
eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
|
|
(env->pb[2] < env->pb[3] &&
|
|
eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
|
|
if (in_plb ^ msr_px) {
|
|
/* Access in protected area */
|
|
if (rw == 1) {
|
|
/* Access is not allowed */
|
|
ret = -2;
|
|
}
|
|
} else {
|
|
/* Read-write access is allowed */
|
|
ctx->prot |= PAGE_WRITE;
|
|
}
|
|
} else {
|
|
ctx->prot |= PAGE_WRITE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
|
|
int rw, int access_type, int check_BATs)
|
|
{
|
|
int ret;
|
|
#if 0
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "%s\n", __func__);
|
|
}
|
|
#endif
|
|
if ((access_type == ACCESS_CODE && msr_ir == 0) ||
|
|
(access_type != ACCESS_CODE && msr_dr == 0)) {
|
|
/* No address translation */
|
|
ret = check_physical(env, ctx, eaddr, rw);
|
|
} else {
|
|
/* Try to find a BAT */
|
|
ret = -1;
|
|
if (check_BATs)
|
|
ret = get_bat(env, ctx, eaddr, rw, access_type);
|
|
if (ret < 0) {
|
|
/* We didn't match any BAT entry */
|
|
ret = get_segment(env, ctx, eaddr, rw, access_type);
|
|
}
|
|
}
|
|
#if 0
|
|
if (loglevel > 0) {
|
|
fprintf(logfile, "%s address %08x => %08lx\n",
|
|
__func__, eaddr, ctx->raddr);
|
|
}
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
target_ulong cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
|
|
{
|
|
mmu_ctx_t ctx;
|
|
|
|
if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT, 1) != 0))
|
|
return -1;
|
|
|
|
return ctx.raddr & TARGET_PAGE_MASK;
|
|
}
|
|
|
|
/* Perform address translation */
|
|
int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
|
|
int is_user, int is_softmmu)
|
|
{
|
|
mmu_ctx_t ctx;
|
|
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;
|
|
}
|
|
ret = get_physical_address(env, &ctx, address, rw, access_type, 1);
|
|
if (ret == 0) {
|
|
ret = tlb_set_page(env, address & TARGET_PAGE_MASK,
|
|
ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
|
|
is_user, is_softmmu);
|
|
} else if (ret < 0) {
|
|
#if defined (DEBUG_MMU)
|
|
if (loglevel > 0)
|
|
cpu_dump_state(env, logfile, fprintf, 0);
|
|
#endif
|
|
if (access_type == ACCESS_CODE) {
|
|
exception = EXCP_ISI;
|
|
switch (ret) {
|
|
case -1:
|
|
/* No matches in page tables or TLB */
|
|
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
|
exception = EXCP_I_TLBMISS;
|
|
env->spr[SPR_IMISS] = address;
|
|
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
|
|
error_code = 1 << 18;
|
|
goto tlb_miss;
|
|
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) {
|
|
/* XXX: TODO */
|
|
} else {
|
|
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 or TLB */
|
|
if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
|
|
if (rw == 1) {
|
|
exception = EXCP_DS_TLBMISS;
|
|
error_code = 1 << 16;
|
|
} else {
|
|
exception = EXCP_DL_TLBMISS;
|
|
error_code = 0;
|
|
}
|
|
env->spr[SPR_DMISS] = address;
|
|
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
|
|
tlb_miss:
|
|
error_code |= ctx.key << 19;
|
|
env->spr[SPR_HASH1] = ctx.pg_addr[0];
|
|
env->spr[SPR_HASH2] = ctx.pg_addr[1];
|
|
/* Do not alter DAR nor DSISR */
|
|
goto out;
|
|
} else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) {
|
|
/* XXX: TODO */
|
|
} else {
|
|
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;
|
|
}
|
|
break;
|
|
case -5:
|
|
/* No match in segment table */
|
|
exception = EXCP_DSEG;
|
|
error_code = 0;
|
|
break;
|
|
}
|
|
if (exception == EXCP_DSI && rw == 1)
|
|
error_code |= 0x02000000;
|
|
/* Store fault address */
|
|
env->spr[SPR_DAR] = address;
|
|
env->spr[SPR_DSISR] = error_code;
|
|
}
|
|
out:
|
|
#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);
|
|
#else
|
|
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;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* Special registers manipulation */
|
|
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;
|
|
tlb_flush(env, 1);
|
|
}
|
|
}
|
|
|
|
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
|
|
tlb_flush(env, 1);
|
|
#endif
|
|
}
|
|
}
|
|
#endif /* !defined (CONFIG_USER_ONLY) */
|
|
|
|
uint32_t ppc_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 ppc_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;
|
|
}
|
|
|
|
/* Swap temporary saved registers with GPRs */
|
|
static inline void swap_gpr_tgpr (CPUPPCState *env)
|
|
{
|
|
ppc_gpr_t tmp;
|
|
|
|
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;
|
|
}
|
|
|
|
/* GDBstub can read and write MSR... */
|
|
target_ulong do_load_msr (CPUPPCState *env)
|
|
{
|
|
return
|
|
#if defined (TARGET_PPC64)
|
|
(msr_sf << MSR_SF) |
|
|
(msr_isf << MSR_ISF) |
|
|
(msr_hv << MSR_HV) |
|
|
#endif
|
|
(msr_ucle << MSR_UCLE) |
|
|
(msr_vr << MSR_VR) | /* VR / SPE */
|
|
(msr_ap << MSR_AP) |
|
|
(msr_sa << MSR_SA) |
|
|
(msr_key << MSR_KEY) |
|
|
(msr_pow << MSR_POW) | /* POW / WE */
|
|
(msr_tlb << MSR_TLB) | /* TLB / TGPE / CE */
|
|
(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) | /* SE / DWE / UBLE */
|
|
(msr_be << MSR_BE) | /* BE / DE */
|
|
(msr_fe1 << MSR_FE1) |
|
|
(msr_al << MSR_AL) |
|
|
(msr_ip << MSR_IP) |
|
|
(msr_ir << MSR_IR) | /* IR / IS */
|
|
(msr_dr << MSR_DR) | /* DR / DS */
|
|
(msr_pe << MSR_PE) | /* PE / EP */
|
|
(msr_px << MSR_PX) | /* PX / PMM */
|
|
(msr_ri << MSR_RI) |
|
|
(msr_le << MSR_LE);
|
|
}
|
|
|
|
void do_store_msr (CPUPPCState *env, target_ulong value)
|
|
{
|
|
int enter_pm;
|
|
|
|
value &= env->msr_mask;
|
|
if (((value >> MSR_IR) & 1) != msr_ir ||
|
|
((value >> MSR_DR) & 1) != msr_dr) {
|
|
/* Flush all tlb when changing translation mode */
|
|
tlb_flush(env, 1);
|
|
env->interrupt_request |= CPU_INTERRUPT_EXITTB;
|
|
}
|
|
#if 0
|
|
if (loglevel != 0) {
|
|
fprintf(logfile, "%s: T0 %08lx\n", __func__, value);
|
|
}
|
|
#endif
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_602:
|
|
case PPC_FLAGS_EXCP_603:
|
|
if (((value >> MSR_TGPR) & 1) != msr_tgpr) {
|
|
/* Swap temporary saved registers with GPRs */
|
|
swap_gpr_tgpr(env);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#if defined (TARGET_PPC64)
|
|
msr_sf = (value >> MSR_SF) & 1;
|
|
msr_isf = (value >> MSR_ISF) & 1;
|
|
msr_hv = (value >> MSR_HV) & 1;
|
|
#endif
|
|
msr_ucle = (value >> MSR_UCLE) & 1;
|
|
msr_vr = (value >> MSR_VR) & 1; /* VR / SPE */
|
|
msr_ap = (value >> MSR_AP) & 1;
|
|
msr_sa = (value >> MSR_SA) & 1;
|
|
msr_key = (value >> MSR_KEY) & 1;
|
|
msr_pow = (value >> MSR_POW) & 1; /* POW / WE */
|
|
msr_tlb = (value >> MSR_TLB) & 1; /* TLB / TGPR / CE */
|
|
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; /* SE / DWE / UBLE */
|
|
msr_be = (value >> MSR_BE) & 1; /* BE / DE */
|
|
msr_fe1 = (value >> MSR_FE1) & 1;
|
|
msr_al = (value >> MSR_AL) & 1;
|
|
msr_ip = (value >> MSR_IP) & 1;
|
|
msr_ir = (value >> MSR_IR) & 1; /* IR / IS */
|
|
msr_dr = (value >> MSR_DR) & 1; /* DR / DS */
|
|
msr_pe = (value >> MSR_PE) & 1; /* PE / EP */
|
|
msr_px = (value >> MSR_PX) & 1; /* PX / PMM */
|
|
msr_ri = (value >> MSR_RI) & 1;
|
|
msr_le = (value >> MSR_LE) & 1;
|
|
do_compute_hflags(env);
|
|
|
|
enter_pm = 0;
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_7x0:
|
|
if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00E00000) != 0)
|
|
enter_pm = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (enter_pm) {
|
|
/* power save: exit cpu loop */
|
|
env->halted = 1;
|
|
env->exception_index = EXCP_HLT;
|
|
cpu_loop_exit();
|
|
}
|
|
}
|
|
|
|
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);
|
|
#if defined (TARGET_PPC64)
|
|
env->hflags |= (msr_sf << MSR_SF) | (msr_hv << MSR_HV);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* Exception processing */
|
|
#if defined (CONFIG_USER_ONLY)
|
|
void do_interrupt (CPUState *env)
|
|
{
|
|
env->exception_index = -1;
|
|
}
|
|
#else /* defined (CONFIG_USER_ONLY) */
|
|
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;
|
|
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 (unlikely(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 (likely(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 */
|
|
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;
|
|
}
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "Hypervisor decrementer exception is not implemented "
|
|
"yet !\n");
|
|
goto store_next;
|
|
/* Implementation specific exceptions */
|
|
case 0x0A00:
|
|
if (likely(env->spr[SPR_PVR] == CPU_PPC_G2 ||
|
|
env->spr[SPR_PVR] == CPU_PPC_G2LE)) {
|
|
/* 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 */
|
|
goto store_gprs;
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* ITLBMISS on 745/755 */
|
|
goto tlb_miss;
|
|
default:
|
|
cpu_abort(env, "Invalid exception 0x1000 !\n");
|
|
break;
|
|
}
|
|
return;
|
|
case 0x1010:
|
|
switch (PPC_EXCP(env)) {
|
|
case PPC_FLAGS_EXCP_40x:
|
|
/* FIT on 4xx */
|
|
/* XXX: TODO */
|
|
cpu_abort(env, "40x FIT exception is not implemented yet !\n");
|
|
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 */
|
|
goto store_gprs;
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* DLTLBMISS on 745/755 */
|
|
goto tlb_miss;
|
|
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 */
|
|
store_gprs:
|
|
/* Swap temporary saved registers with GPRs */
|
|
swap_gpr_tgpr(env);
|
|
msr_tgpr = 1;
|
|
#if defined (DEBUG_SOFTWARE_TLB)
|
|
if (loglevel != 0) {
|
|
const unsigned char *es;
|
|
target_ulong *miss, *cmp;
|
|
int en;
|
|
if (excp == 0x1000) {
|
|
es = "I";
|
|
en = 'I';
|
|
miss = &env->spr[SPR_IMISS];
|
|
cmp = &env->spr[SPR_ICMP];
|
|
} else {
|
|
if (excp == 0x1100)
|
|
es = "DL";
|
|
else
|
|
es = "DS";
|
|
en = 'D';
|
|
miss = &env->spr[SPR_DMISS];
|
|
cmp = &env->spr[SPR_DCMP];
|
|
}
|
|
fprintf(logfile, "6xx %sTLB miss: %cM %08x %cC %08x "
|
|
"H1 %08x H2 %08x %08x\n", es, en, *miss, en, *cmp,
|
|
env->spr[SPR_HASH1], env->spr[SPR_HASH2],
|
|
env->error_code);
|
|
}
|
|
#endif
|
|
goto tlb_miss;
|
|
case PPC_FLAGS_EXCP_7x5:
|
|
/* DSTLBMISS on 745/755 */
|
|
tlb_miss:
|
|
msr &= ~0xF83F0000;
|
|
msr |= env->crf[0] << 28;
|
|
msr |= env->error_code; /* key, D/I, S/L bits */
|
|
/* Set way using a LRU mechanism */
|
|
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
|
|
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 */
|
|
/* XXX: TODO */
|
|
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;
|
|
}
|
|
#endif /* !CONFIG_USER_ONLY */
|