root / target-ppc / helper.c @ 64adab3f
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/*
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* PowerPC emulation helpers for qemu.
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <signal.h> |
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#include <assert.h> |
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "helper_regs.h" |
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#include "qemu-common.h" |
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#include "helper.h" |
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//#define DEBUG_MMU
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//#define DEBUG_BATS
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//#define DEBUG_SLB
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//#define DEBUG_SOFTWARE_TLB
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//#define DUMP_PAGE_TABLES
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//#define DEBUG_EXCEPTIONS
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//#define FLUSH_ALL_TLBS
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/*****************************************************************************/
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/* Exceptions processing */
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void raise_exception_err (CPUState *env, int exception, int error_code) |
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{ |
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#if 0
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printf("Raise exception %3x code : %d\n", exception, error_code);
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#endif
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env->exception_index = exception; |
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env->error_code = error_code; |
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cpu_loop_exit(); |
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} |
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void raise_exception (CPUState *env, int exception) |
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{ |
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helper_raise_exception_err(exception, 0);
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} |
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/*****************************************************************************/
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/* PowerPC MMU emulation */
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#if defined(CONFIG_USER_ONLY)
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int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
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int mmu_idx, 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 = POWERPC_EXCP_ISI; |
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error_code = 0x40000000;
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} else {
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exception = POWERPC_EXCP_DSI; |
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error_code = 0x40000000;
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if (rw)
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error_code |= 0x02000000;
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env->spr[SPR_DAR] = address; |
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env->spr[SPR_DSISR] = error_code; |
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} |
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env->exception_index = exception; |
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env->error_code = error_code; |
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return 1; |
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} |
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target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr) |
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{ |
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return addr;
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} |
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#else
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/* Common routines used by software and hardware TLBs emulation */
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static always_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 always_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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#if defined(TARGET_PPC64)
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static always_inline int pte64_is_valid (target_ulong pte0) |
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{ |
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return pte0 & 0x0000000000000001ULL ? 1 : 0; |
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} |
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static always_inline void pte64_invalidate (target_ulong *pte0) |
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{ |
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*pte0 &= ~0x0000000000000001ULL;
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} |
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#endif
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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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#if defined(TARGET_PPC64)
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#define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL |
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#define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F) |
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#endif
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static always_inline int pp_check (int key, int pp, int nx) |
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{ |
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int access;
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/* Compute access rights */
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/* When pp is 3/7, the result is undefined. Set it to noaccess */
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access = 0;
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if (key == 0) { |
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switch (pp) {
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case 0x0: |
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case 0x1: |
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case 0x2: |
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access |= PAGE_WRITE; |
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/* No break here */
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case 0x3: |
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case 0x6: |
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access |= PAGE_READ; |
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break;
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} |
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} else {
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switch (pp) {
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case 0x0: |
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case 0x6: |
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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 (nx == 0) |
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access |= PAGE_EXEC; |
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return access;
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} |
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static always_inline int check_prot (int prot, int rw, int access_type) |
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{ |
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int ret;
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if (access_type == ACCESS_CODE) {
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if (prot & PAGE_EXEC)
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ret = 0;
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else
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ret = -2;
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} else if (rw) { |
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if (prot & PAGE_WRITE)
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ret = 0;
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else
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ret = -2;
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} else {
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if (prot & PAGE_READ)
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ret = 0;
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else
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ret = -2;
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} |
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return ret;
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} |
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static always_inline int _pte_check (mmu_ctx_t *ctx, int is_64b, |
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target_ulong pte0, target_ulong pte1, |
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int h, int rw, int type) |
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{ |
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target_ulong ptem, mmask; |
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int access, ret, pteh, ptev, pp;
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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 defined(TARGET_PPC64)
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if (is_64b) {
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ptev = pte64_is_valid(pte0); |
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pteh = (pte0 >> 1) & 1; |
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} else
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#endif
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{ |
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ptev = pte_is_valid(pte0); |
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pteh = (pte0 >> 6) & 1; |
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} |
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if (ptev && h == pteh) {
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/* Check vsid & api */
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#if defined(TARGET_PPC64)
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if (is_64b) {
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ptem = pte0 & PTE64_PTEM_MASK; |
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mmask = PTE64_CHECK_MASK; |
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pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004); |
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ctx->nx |= (pte1 >> 2) & 1; /* No execute bit */ |
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ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */ |
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} else
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#endif
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{ |
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ptem = pte0 & PTE_PTEM_MASK; |
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mmask = PTE_CHECK_MASK; |
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pp = pte1 & 0x00000003;
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} |
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if (ptem == ctx->ptem) {
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if (ctx->raddr != (target_phys_addr_t)-1ULL) { |
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/* all matches should have equal RPN, WIMG & PP */
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if ((ctx->raddr & mmask) != (pte1 & mmask)) {
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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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access = pp_check(ctx->key, pp, ctx->nx); |
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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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ret = check_prot(ctx->prot, rw, type); |
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if (ret == 0) { |
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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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} 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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} |
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} |
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} |
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return ret;
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} |
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static always_inline int pte32_check (mmu_ctx_t *ctx, |
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target_ulong pte0, target_ulong pte1, |
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int h, int rw, int type) |
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{ |
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return _pte_check(ctx, 0, pte0, pte1, h, rw, type); |
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} |
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#if defined(TARGET_PPC64)
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static always_inline int pte64_check (mmu_ctx_t *ctx, |
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target_ulong pte0, target_ulong pte1, |
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int h, int rw, int type) |
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{ |
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return _pte_check(ctx, 1, pte0, pte1, h, rw, type); |
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} |
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#endif
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static always_inline 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 always_inline int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr, |
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int way, int is_code) |
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{ |
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int nr;
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/* Select TLB num in a way from address */
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nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
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/* Select TLB way */
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nr += env->tlb_per_way * way; |
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/* 6xx have separate TLBs for instructions and data */
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if (is_code && env->id_tlbs == 1) |
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nr += env->nb_tlb; |
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return nr;
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} |
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static always_inline void ppc6xx_tlb_invalidate_all (CPUState *env) |
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{ |
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ppc6xx_tlb_t *tlb; |
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int nr, max;
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#if defined (DEBUG_SOFTWARE_TLB) && 0 |
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if (loglevel != 0) { |
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fprintf(logfile, "Invalidate all TLBs\n");
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} |
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#endif
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/* Invalidate all defined software TLB */
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max = env->nb_tlb; |
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if (env->id_tlbs == 1) |
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max *= 2;
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for (nr = 0; nr < max; nr++) { |
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tlb = &env->tlb[nr].tlb6; |
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pte_invalidate(&tlb->pte0); |
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} |
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tlb_flush(env, 1);
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} |
334 |
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static always_inline void __ppc6xx_tlb_invalidate_virt (CPUState *env, |
336 |
target_ulong eaddr, |
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int is_code,
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int match_epn)
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{ |
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#if !defined(FLUSH_ALL_TLBS)
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ppc6xx_tlb_t *tlb; |
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int way, nr;
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/* Invalidate ITLB + DTLB, all ways */
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for (way = 0; way < env->nb_ways; way++) { |
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nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); |
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tlb = &env->tlb[nr].tlb6; |
348 |
if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { |
349 |
#if defined (DEBUG_SOFTWARE_TLB)
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if (loglevel != 0) { |
351 |
fprintf(logfile, "TLB invalidate %d/%d " ADDRX "\n", |
352 |
nr, env->nb_tlb, eaddr); |
353 |
} |
354 |
#endif
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pte_invalidate(&tlb->pte0); |
356 |
tlb_flush_page(env, tlb->EPN); |
357 |
} |
358 |
} |
359 |
#else
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360 |
/* XXX: PowerPC specification say this is valid as well */
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ppc6xx_tlb_invalidate_all(env); |
362 |
#endif
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363 |
} |
364 |
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365 |
static always_inline void ppc6xx_tlb_invalidate_virt (CPUState *env, |
366 |
target_ulong eaddr, |
367 |
int is_code)
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368 |
{ |
369 |
__ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
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370 |
} |
371 |
|
372 |
void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code, |
373 |
target_ulong pte0, target_ulong pte1) |
374 |
{ |
375 |
ppc6xx_tlb_t *tlb; |
376 |
int nr;
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377 |
|
378 |
nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); |
379 |
tlb = &env->tlb[nr].tlb6; |
380 |
#if defined (DEBUG_SOFTWARE_TLB)
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381 |
if (loglevel != 0) { |
382 |
fprintf(logfile, "Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX |
383 |
" PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1); |
384 |
} |
385 |
#endif
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386 |
/* Invalidate any pending reference in Qemu for this virtual address */
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387 |
__ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
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388 |
tlb->pte0 = pte0; |
389 |
tlb->pte1 = pte1; |
390 |
tlb->EPN = EPN; |
391 |
/* Store last way for LRU mechanism */
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392 |
env->last_way = way; |
393 |
} |
394 |
|
395 |
static always_inline int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx, |
396 |
target_ulong eaddr, int rw,
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397 |
int access_type)
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398 |
{ |
399 |
ppc6xx_tlb_t *tlb; |
400 |
int nr, best, way;
|
401 |
int ret;
|
402 |
|
403 |
best = -1;
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404 |
ret = -1; /* No TLB found */ |
405 |
for (way = 0; way < env->nb_ways; way++) { |
406 |
nr = ppc6xx_tlb_getnum(env, eaddr, way, |
407 |
access_type == ACCESS_CODE ? 1 : 0); |
408 |
tlb = &env->tlb[nr].tlb6; |
409 |
/* This test "emulates" the PTE index match for hardware TLBs */
|
410 |
if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
|
411 |
#if defined (DEBUG_SOFTWARE_TLB)
|
412 |
if (loglevel != 0) { |
413 |
fprintf(logfile, "TLB %d/%d %s [" ADDRX " " ADDRX |
414 |
"] <> " ADDRX "\n", |
415 |
nr, env->nb_tlb, |
416 |
pte_is_valid(tlb->pte0) ? "valid" : "inval", |
417 |
tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); |
418 |
} |
419 |
#endif
|
420 |
continue;
|
421 |
} |
422 |
#if defined (DEBUG_SOFTWARE_TLB)
|
423 |
if (loglevel != 0) { |
424 |
fprintf(logfile, "TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX |
425 |
" %c %c\n",
|
426 |
nr, env->nb_tlb, |
427 |
pte_is_valid(tlb->pte0) ? "valid" : "inval", |
428 |
tlb->EPN, eaddr, tlb->pte1, |
429 |
rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D'); |
430 |
} |
431 |
#endif
|
432 |
switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) { |
433 |
case -3: |
434 |
/* TLB inconsistency */
|
435 |
return -1; |
436 |
case -2: |
437 |
/* Access violation */
|
438 |
ret = -2;
|
439 |
best = nr; |
440 |
break;
|
441 |
case -1: |
442 |
default:
|
443 |
/* No match */
|
444 |
break;
|
445 |
case 0: |
446 |
/* access granted */
|
447 |
/* XXX: we should go on looping to check all TLBs consistency
|
448 |
* but we can speed-up the whole thing as the
|
449 |
* result would be undefined if TLBs are not consistent.
|
450 |
*/
|
451 |
ret = 0;
|
452 |
best = nr; |
453 |
goto done;
|
454 |
} |
455 |
} |
456 |
if (best != -1) { |
457 |
done:
|
458 |
#if defined (DEBUG_SOFTWARE_TLB)
|
459 |
if (loglevel != 0) { |
460 |
fprintf(logfile, "found TLB at addr " PADDRX " prot=%01x ret=%d\n", |
461 |
ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); |
462 |
} |
463 |
#endif
|
464 |
/* Update page flags */
|
465 |
pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw); |
466 |
} |
467 |
|
468 |
return ret;
|
469 |
} |
470 |
|
471 |
/* Perform BAT hit & translation */
|
472 |
static always_inline void bat_size_prot (CPUState *env, target_ulong *blp, |
473 |
int *validp, int *protp, |
474 |
target_ulong *BATu, target_ulong *BATl) |
475 |
{ |
476 |
target_ulong bl; |
477 |
int pp, valid, prot;
|
478 |
|
479 |
bl = (*BATu & 0x00001FFC) << 15; |
480 |
valid = 0;
|
481 |
prot = 0;
|
482 |
if (((msr_pr == 0) && (*BATu & 0x00000002)) || |
483 |
((msr_pr != 0) && (*BATu & 0x00000001))) { |
484 |
valid = 1;
|
485 |
pp = *BATl & 0x00000003;
|
486 |
if (pp != 0) { |
487 |
prot = PAGE_READ | PAGE_EXEC; |
488 |
if (pp == 0x2) |
489 |
prot |= PAGE_WRITE; |
490 |
} |
491 |
} |
492 |
*blp = bl; |
493 |
*validp = valid; |
494 |
*protp = prot; |
495 |
} |
496 |
|
497 |
static always_inline void bat_601_size_prot (CPUState *env,target_ulong *blp, |
498 |
int *validp, int *protp, |
499 |
target_ulong *BATu, |
500 |
target_ulong *BATl) |
501 |
{ |
502 |
target_ulong bl; |
503 |
int key, pp, valid, prot;
|
504 |
|
505 |
bl = (*BATl & 0x0000003F) << 17; |
506 |
#if defined (DEBUG_BATS)
|
507 |
if (loglevel != 0) { |
508 |
fprintf(logfile, "b %02x ==> bl " ADDRX " msk " ADDRX "\n", |
509 |
(uint8_t)(*BATl & 0x0000003F), bl, ~bl);
|
510 |
} |
511 |
#endif
|
512 |
prot = 0;
|
513 |
valid = (*BATl >> 6) & 1; |
514 |
if (valid) {
|
515 |
pp = *BATu & 0x00000003;
|
516 |
if (msr_pr == 0) |
517 |
key = (*BATu >> 3) & 1; |
518 |
else
|
519 |
key = (*BATu >> 2) & 1; |
520 |
prot = pp_check(key, pp, 0);
|
521 |
} |
522 |
*blp = bl; |
523 |
*validp = valid; |
524 |
*protp = prot; |
525 |
} |
526 |
|
527 |
static always_inline int get_bat (CPUState *env, mmu_ctx_t *ctx, |
528 |
target_ulong virtual, int rw, int type) |
529 |
{ |
530 |
target_ulong *BATlt, *BATut, *BATu, *BATl; |
531 |
target_ulong base, BEPIl, BEPIu, bl; |
532 |
int i, valid, prot;
|
533 |
int ret = -1; |
534 |
|
535 |
#if defined (DEBUG_BATS)
|
536 |
if (loglevel != 0) { |
537 |
fprintf(logfile, "%s: %cBAT v " ADDRX "\n", __func__, |
538 |
type == ACCESS_CODE ? 'I' : 'D', virtual); |
539 |
} |
540 |
#endif
|
541 |
switch (type) {
|
542 |
case ACCESS_CODE:
|
543 |
BATlt = env->IBAT[1];
|
544 |
BATut = env->IBAT[0];
|
545 |
break;
|
546 |
default:
|
547 |
BATlt = env->DBAT[1];
|
548 |
BATut = env->DBAT[0];
|
549 |
break;
|
550 |
} |
551 |
base = virtual & 0xFFFC0000;
|
552 |
for (i = 0; i < env->nb_BATs; i++) { |
553 |
BATu = &BATut[i]; |
554 |
BATl = &BATlt[i]; |
555 |
BEPIu = *BATu & 0xF0000000;
|
556 |
BEPIl = *BATu & 0x0FFE0000;
|
557 |
if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
|
558 |
bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl); |
559 |
} else {
|
560 |
bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); |
561 |
} |
562 |
#if defined (DEBUG_BATS)
|
563 |
if (loglevel != 0) { |
564 |
fprintf(logfile, "%s: %cBAT%d v " ADDRX " BATu " ADDRX |
565 |
" BATl " ADDRX "\n", __func__, |
566 |
type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl); |
567 |
} |
568 |
#endif
|
569 |
if ((virtual & 0xF0000000) == BEPIu && |
570 |
((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
|
571 |
/* BAT matches */
|
572 |
if (valid != 0) { |
573 |
/* Get physical address */
|
574 |
ctx->raddr = (*BATl & 0xF0000000) |
|
575 |
((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | |
576 |
(virtual & 0x0001F000);
|
577 |
/* Compute access rights */
|
578 |
ctx->prot = prot; |
579 |
ret = check_prot(ctx->prot, rw, type); |
580 |
#if defined (DEBUG_BATS)
|
581 |
if (ret == 0 && loglevel != 0) { |
582 |
fprintf(logfile, "BAT %d match: r " PADDRX " prot=%c%c\n", |
583 |
i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', |
584 |
ctx->prot & PAGE_WRITE ? 'W' : '-'); |
585 |
} |
586 |
#endif
|
587 |
break;
|
588 |
} |
589 |
} |
590 |
} |
591 |
if (ret < 0) { |
592 |
#if defined (DEBUG_BATS)
|
593 |
if (loglevel != 0) { |
594 |
fprintf(logfile, "no BAT match for " ADDRX ":\n", virtual); |
595 |
for (i = 0; i < 4; i++) { |
596 |
BATu = &BATut[i]; |
597 |
BATl = &BATlt[i]; |
598 |
BEPIu = *BATu & 0xF0000000;
|
599 |
BEPIl = *BATu & 0x0FFE0000;
|
600 |
bl = (*BATu & 0x00001FFC) << 15; |
601 |
fprintf(logfile, "%s: %cBAT%d v " ADDRX " BATu " ADDRX |
602 |
" BATl " ADDRX " \n\t" ADDRX " " ADDRX " " ADDRX "\n", |
603 |
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, |
604 |
*BATu, *BATl, BEPIu, BEPIl, bl); |
605 |
} |
606 |
} |
607 |
#endif
|
608 |
} |
609 |
|
610 |
/* No hit */
|
611 |
return ret;
|
612 |
} |
613 |
|
614 |
/* PTE table lookup */
|
615 |
static always_inline int _find_pte (mmu_ctx_t *ctx, int is_64b, int h, |
616 |
int rw, int type) |
617 |
{ |
618 |
target_ulong base, pte0, pte1; |
619 |
int i, good = -1; |
620 |
int ret, r;
|
621 |
|
622 |
ret = -1; /* No entry found */ |
623 |
base = ctx->pg_addr[h]; |
624 |
for (i = 0; i < 8; i++) { |
625 |
#if defined(TARGET_PPC64)
|
626 |
if (is_64b) {
|
627 |
pte0 = ldq_phys(base + (i * 16));
|
628 |
pte1 = ldq_phys(base + (i * 16) + 8); |
629 |
r = pte64_check(ctx, pte0, pte1, h, rw, type); |
630 |
#if defined (DEBUG_MMU)
|
631 |
if (loglevel != 0) { |
632 |
fprintf(logfile, "Load pte from " ADDRX " => " ADDRX " " ADDRX |
633 |
" %d %d %d " ADDRX "\n", |
634 |
base + (i * 16), pte0, pte1,
|
635 |
(int)(pte0 & 1), h, (int)((pte0 >> 1) & 1), |
636 |
ctx->ptem); |
637 |
} |
638 |
#endif
|
639 |
} else
|
640 |
#endif
|
641 |
{ |
642 |
pte0 = ldl_phys(base + (i * 8));
|
643 |
pte1 = ldl_phys(base + (i * 8) + 4); |
644 |
r = pte32_check(ctx, pte0, pte1, h, rw, type); |
645 |
#if defined (DEBUG_MMU)
|
646 |
if (loglevel != 0) { |
647 |
fprintf(logfile, "Load pte from " ADDRX " => " ADDRX " " ADDRX |
648 |
" %d %d %d " ADDRX "\n", |
649 |
base + (i * 8), pte0, pte1,
|
650 |
(int)(pte0 >> 31), h, (int)((pte0 >> 6) & 1), |
651 |
ctx->ptem); |
652 |
} |
653 |
#endif
|
654 |
} |
655 |
switch (r) {
|
656 |
case -3: |
657 |
/* PTE inconsistency */
|
658 |
return -1; |
659 |
case -2: |
660 |
/* Access violation */
|
661 |
ret = -2;
|
662 |
good = i; |
663 |
break;
|
664 |
case -1: |
665 |
default:
|
666 |
/* No PTE match */
|
667 |
break;
|
668 |
case 0: |
669 |
/* access granted */
|
670 |
/* XXX: we should go on looping to check all PTEs consistency
|
671 |
* but if we can speed-up the whole thing as the
|
672 |
* result would be undefined if PTEs are not consistent.
|
673 |
*/
|
674 |
ret = 0;
|
675 |
good = i; |
676 |
goto done;
|
677 |
} |
678 |
} |
679 |
if (good != -1) { |
680 |
done:
|
681 |
#if defined (DEBUG_MMU)
|
682 |
if (loglevel != 0) { |
683 |
fprintf(logfile, "found PTE at addr " PADDRX " prot=%01x ret=%d\n", |
684 |
ctx->raddr, ctx->prot, ret); |
685 |
} |
686 |
#endif
|
687 |
/* Update page flags */
|
688 |
pte1 = ctx->raddr; |
689 |
if (pte_update_flags(ctx, &pte1, ret, rw) == 1) { |
690 |
#if defined(TARGET_PPC64)
|
691 |
if (is_64b) {
|
692 |
stq_phys_notdirty(base + (good * 16) + 8, pte1); |
693 |
} else
|
694 |
#endif
|
695 |
{ |
696 |
stl_phys_notdirty(base + (good * 8) + 4, pte1); |
697 |
} |
698 |
} |
699 |
} |
700 |
|
701 |
return ret;
|
702 |
} |
703 |
|
704 |
static always_inline int find_pte32 (mmu_ctx_t *ctx, int h, int rw, int type) |
705 |
{ |
706 |
return _find_pte(ctx, 0, h, rw, type); |
707 |
} |
708 |
|
709 |
#if defined(TARGET_PPC64)
|
710 |
static always_inline int find_pte64 (mmu_ctx_t *ctx, int h, int rw, int type) |
711 |
{ |
712 |
return _find_pte(ctx, 1, h, rw, type); |
713 |
} |
714 |
#endif
|
715 |
|
716 |
static always_inline int find_pte (CPUState *env, mmu_ctx_t *ctx, |
717 |
int h, int rw, int type) |
718 |
{ |
719 |
#if defined(TARGET_PPC64)
|
720 |
if (env->mmu_model & POWERPC_MMU_64)
|
721 |
return find_pte64(ctx, h, rw, type);
|
722 |
#endif
|
723 |
|
724 |
return find_pte32(ctx, h, rw, type);
|
725 |
} |
726 |
|
727 |
#if defined(TARGET_PPC64)
|
728 |
static always_inline int slb_is_valid (uint64_t slb64) |
729 |
{ |
730 |
return slb64 & 0x0000000008000000ULL ? 1 : 0; |
731 |
} |
732 |
|
733 |
static always_inline void slb_invalidate (uint64_t *slb64) |
734 |
{ |
735 |
*slb64 &= ~0x0000000008000000ULL;
|
736 |
} |
737 |
|
738 |
static always_inline int slb_lookup (CPUPPCState *env, target_ulong eaddr, |
739 |
target_ulong *vsid, |
740 |
target_ulong *page_mask, int *attr)
|
741 |
{ |
742 |
target_phys_addr_t sr_base; |
743 |
target_ulong mask; |
744 |
uint64_t tmp64; |
745 |
uint32_t tmp; |
746 |
int n, ret;
|
747 |
|
748 |
ret = -5;
|
749 |
sr_base = env->spr[SPR_ASR]; |
750 |
#if defined(DEBUG_SLB)
|
751 |
if (loglevel != 0) { |
752 |
fprintf(logfile, "%s: eaddr " ADDRX " base " PADDRX "\n", |
753 |
__func__, eaddr, sr_base); |
754 |
} |
755 |
#endif
|
756 |
mask = 0x0000000000000000ULL; /* Avoid gcc warning */ |
757 |
for (n = 0; n < env->slb_nr; n++) { |
758 |
tmp64 = ldq_phys(sr_base); |
759 |
tmp = ldl_phys(sr_base + 8);
|
760 |
#if defined(DEBUG_SLB)
|
761 |
if (loglevel != 0) { |
762 |
fprintf(logfile, "%s: seg %d " PADDRX " %016" PRIx64 " %08" |
763 |
PRIx32 "\n", __func__, n, sr_base, tmp64, tmp);
|
764 |
} |
765 |
#endif
|
766 |
if (slb_is_valid(tmp64)) {
|
767 |
/* SLB entry is valid */
|
768 |
switch (tmp64 & 0x0000000006000000ULL) { |
769 |
case 0x0000000000000000ULL: |
770 |
/* 256 MB segment */
|
771 |
mask = 0xFFFFFFFFF0000000ULL;
|
772 |
break;
|
773 |
case 0x0000000002000000ULL: |
774 |
/* 1 TB segment */
|
775 |
mask = 0xFFFF000000000000ULL;
|
776 |
break;
|
777 |
case 0x0000000004000000ULL: |
778 |
case 0x0000000006000000ULL: |
779 |
/* Reserved => segment is invalid */
|
780 |
continue;
|
781 |
} |
782 |
if ((eaddr & mask) == (tmp64 & mask)) {
|
783 |
/* SLB match */
|
784 |
*vsid = ((tmp64 << 24) | (tmp >> 8)) & 0x0003FFFFFFFFFFFFULL; |
785 |
*page_mask = ~mask; |
786 |
*attr = tmp & 0xFF;
|
787 |
ret = n; |
788 |
break;
|
789 |
} |
790 |
} |
791 |
sr_base += 12;
|
792 |
} |
793 |
|
794 |
return ret;
|
795 |
} |
796 |
|
797 |
void ppc_slb_invalidate_all (CPUPPCState *env)
|
798 |
{ |
799 |
target_phys_addr_t sr_base; |
800 |
uint64_t tmp64; |
801 |
int n, do_invalidate;
|
802 |
|
803 |
do_invalidate = 0;
|
804 |
sr_base = env->spr[SPR_ASR]; |
805 |
/* XXX: Warning: slbia never invalidates the first segment */
|
806 |
for (n = 1; n < env->slb_nr; n++) { |
807 |
tmp64 = ldq_phys(sr_base); |
808 |
if (slb_is_valid(tmp64)) {
|
809 |
slb_invalidate(&tmp64); |
810 |
stq_phys(sr_base, tmp64); |
811 |
/* XXX: given the fact that segment size is 256 MB or 1TB,
|
812 |
* and we still don't have a tlb_flush_mask(env, n, mask)
|
813 |
* in Qemu, we just invalidate all TLBs
|
814 |
*/
|
815 |
do_invalidate = 1;
|
816 |
} |
817 |
sr_base += 12;
|
818 |
} |
819 |
if (do_invalidate)
|
820 |
tlb_flush(env, 1);
|
821 |
} |
822 |
|
823 |
void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
|
824 |
{ |
825 |
target_phys_addr_t sr_base; |
826 |
target_ulong vsid, page_mask; |
827 |
uint64_t tmp64; |
828 |
int attr;
|
829 |
int n;
|
830 |
|
831 |
n = slb_lookup(env, T0, &vsid, &page_mask, &attr); |
832 |
if (n >= 0) { |
833 |
sr_base = env->spr[SPR_ASR]; |
834 |
sr_base += 12 * n;
|
835 |
tmp64 = ldq_phys(sr_base); |
836 |
if (slb_is_valid(tmp64)) {
|
837 |
slb_invalidate(&tmp64); |
838 |
stq_phys(sr_base, tmp64); |
839 |
/* XXX: given the fact that segment size is 256 MB or 1TB,
|
840 |
* and we still don't have a tlb_flush_mask(env, n, mask)
|
841 |
* in Qemu, we just invalidate all TLBs
|
842 |
*/
|
843 |
tlb_flush(env, 1);
|
844 |
} |
845 |
} |
846 |
} |
847 |
|
848 |
target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
|
849 |
{ |
850 |
target_phys_addr_t sr_base; |
851 |
target_ulong rt; |
852 |
uint64_t tmp64; |
853 |
uint32_t tmp; |
854 |
|
855 |
sr_base = env->spr[SPR_ASR]; |
856 |
sr_base += 12 * slb_nr;
|
857 |
tmp64 = ldq_phys(sr_base); |
858 |
tmp = ldl_phys(sr_base + 8);
|
859 |
if (tmp64 & 0x0000000008000000ULL) { |
860 |
/* SLB entry is valid */
|
861 |
/* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
|
862 |
rt = tmp >> 8; /* 65:88 => 40:63 */ |
863 |
rt |= (tmp64 & 0x7) << 24; /* 62:64 => 37:39 */ |
864 |
/* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
|
865 |
rt |= ((tmp >> 4) & 0xF) << 27; |
866 |
} else {
|
867 |
rt = 0;
|
868 |
} |
869 |
#if defined(DEBUG_SLB)
|
870 |
if (loglevel != 0) { |
871 |
fprintf(logfile, "%s: " PADDRX " %016" PRIx64 " %08" PRIx32 " => %d " |
872 |
ADDRX "\n", __func__, sr_base, tmp64, tmp, slb_nr, rt);
|
873 |
} |
874 |
#endif
|
875 |
|
876 |
return rt;
|
877 |
} |
878 |
|
879 |
void ppc_store_slb (CPUPPCState *env, int slb_nr, target_ulong rs) |
880 |
{ |
881 |
target_phys_addr_t sr_base; |
882 |
uint64_t tmp64; |
883 |
uint32_t tmp; |
884 |
|
885 |
sr_base = env->spr[SPR_ASR]; |
886 |
sr_base += 12 * slb_nr;
|
887 |
/* Copy Rs bits 37:63 to SLB 62:88 */
|
888 |
tmp = rs << 8;
|
889 |
tmp64 = (rs >> 24) & 0x7; |
890 |
/* Copy Rs bits 33:36 to SLB 89:92 */
|
891 |
tmp |= ((rs >> 27) & 0xF) << 4; |
892 |
/* Set the valid bit */
|
893 |
tmp64 |= 1 << 27; |
894 |
/* Set ESID */
|
895 |
tmp64 |= (uint32_t)slb_nr << 28;
|
896 |
#if defined(DEBUG_SLB)
|
897 |
if (loglevel != 0) { |
898 |
fprintf(logfile, "%s: %d " ADDRX " => " PADDRX " %016" PRIx64 |
899 |
" %08" PRIx32 "\n", __func__, |
900 |
slb_nr, rs, sr_base, tmp64, tmp); |
901 |
} |
902 |
#endif
|
903 |
/* Write SLB entry to memory */
|
904 |
stq_phys(sr_base, tmp64); |
905 |
stl_phys(sr_base + 8, tmp);
|
906 |
} |
907 |
#endif /* defined(TARGET_PPC64) */ |
908 |
|
909 |
/* Perform segment based translation */
|
910 |
static always_inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
|
911 |
int sdr_sh,
|
912 |
target_phys_addr_t hash, |
913 |
target_phys_addr_t mask) |
914 |
{ |
915 |
return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask); |
916 |
} |
917 |
|
918 |
static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx, |
919 |
target_ulong eaddr, int rw, int type) |
920 |
{ |
921 |
target_phys_addr_t sdr, hash, mask, sdr_mask, htab_mask; |
922 |
target_ulong sr, vsid, vsid_mask, pgidx, page_mask; |
923 |
#if defined(TARGET_PPC64)
|
924 |
int attr;
|
925 |
#endif
|
926 |
int ds, vsid_sh, sdr_sh, pr;
|
927 |
int ret, ret2;
|
928 |
|
929 |
pr = msr_pr; |
930 |
#if defined(TARGET_PPC64)
|
931 |
if (env->mmu_model & POWERPC_MMU_64) {
|
932 |
#if defined (DEBUG_MMU)
|
933 |
if (loglevel != 0) { |
934 |
fprintf(logfile, "Check SLBs\n");
|
935 |
} |
936 |
#endif
|
937 |
ret = slb_lookup(env, eaddr, &vsid, &page_mask, &attr); |
938 |
if (ret < 0) |
939 |
return ret;
|
940 |
ctx->key = ((attr & 0x40) && (pr != 0)) || |
941 |
((attr & 0x80) && (pr == 0)) ? 1 : 0; |
942 |
ds = 0;
|
943 |
ctx->nx = attr & 0x20 ? 1 : 0; |
944 |
vsid_mask = 0x00003FFFFFFFFF80ULL;
|
945 |
vsid_sh = 7;
|
946 |
sdr_sh = 18;
|
947 |
sdr_mask = 0x3FF80;
|
948 |
} else
|
949 |
#endif /* defined(TARGET_PPC64) */ |
950 |
{ |
951 |
sr = env->sr[eaddr >> 28];
|
952 |
page_mask = 0x0FFFFFFF;
|
953 |
ctx->key = (((sr & 0x20000000) && (pr != 0)) || |
954 |
((sr & 0x40000000) && (pr == 0))) ? 1 : 0; |
955 |
ds = sr & 0x80000000 ? 1 : 0; |
956 |
ctx->nx = sr & 0x10000000 ? 1 : 0; |
957 |
vsid = sr & 0x00FFFFFF;
|
958 |
vsid_mask = 0x01FFFFC0;
|
959 |
vsid_sh = 6;
|
960 |
sdr_sh = 16;
|
961 |
sdr_mask = 0xFFC0;
|
962 |
#if defined (DEBUG_MMU)
|
963 |
if (loglevel != 0) { |
964 |
fprintf(logfile, "Check segment v=" ADDRX " %d " ADDRX |
965 |
" nip=" ADDRX " lr=" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n", |
966 |
eaddr, (int)(eaddr >> 28), sr, env->nip, |
967 |
env->lr, (int)msr_ir, (int)msr_dr, pr != 0 ? 1 : 0, |
968 |
rw, type); |
969 |
} |
970 |
#endif
|
971 |
} |
972 |
#if defined (DEBUG_MMU)
|
973 |
if (loglevel != 0) { |
974 |
fprintf(logfile, "pte segment: key=%d ds %d nx %d vsid " ADDRX "\n", |
975 |
ctx->key, ds, ctx->nx, vsid); |
976 |
} |
977 |
#endif
|
978 |
ret = -1;
|
979 |
if (!ds) {
|
980 |
/* Check if instruction fetch is allowed, if needed */
|
981 |
if (type != ACCESS_CODE || ctx->nx == 0) { |
982 |
/* Page address translation */
|
983 |
/* Primary table address */
|
984 |
sdr = env->sdr1; |
985 |
pgidx = (eaddr & page_mask) >> TARGET_PAGE_BITS; |
986 |
#if defined(TARGET_PPC64)
|
987 |
if (env->mmu_model & POWERPC_MMU_64) {
|
988 |
htab_mask = 0x0FFFFFFF >> (28 - (sdr & 0x1F)); |
989 |
/* XXX: this is false for 1 TB segments */
|
990 |
hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask; |
991 |
} else
|
992 |
#endif
|
993 |
{ |
994 |
htab_mask = sdr & 0x000001FF;
|
995 |
hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask; |
996 |
} |
997 |
mask = (htab_mask << sdr_sh) | sdr_mask; |
998 |
#if defined (DEBUG_MMU)
|
999 |
if (loglevel != 0) { |
1000 |
fprintf(logfile, "sdr " PADDRX " sh %d hash " PADDRX |
1001 |
" mask " PADDRX " " ADDRX "\n", |
1002 |
sdr, sdr_sh, hash, mask, page_mask); |
1003 |
} |
1004 |
#endif
|
1005 |
ctx->pg_addr[0] = get_pgaddr(sdr, sdr_sh, hash, mask);
|
1006 |
/* Secondary table address */
|
1007 |
hash = (~hash) & vsid_mask; |
1008 |
#if defined (DEBUG_MMU)
|
1009 |
if (loglevel != 0) { |
1010 |
fprintf(logfile, "sdr " PADDRX " sh %d hash " PADDRX |
1011 |
" mask " PADDRX "\n", |
1012 |
sdr, sdr_sh, hash, mask); |
1013 |
} |
1014 |
#endif
|
1015 |
ctx->pg_addr[1] = get_pgaddr(sdr, sdr_sh, hash, mask);
|
1016 |
#if defined(TARGET_PPC64)
|
1017 |
if (env->mmu_model & POWERPC_MMU_64) {
|
1018 |
/* Only 5 bits of the page index are used in the AVPN */
|
1019 |
ctx->ptem = (vsid << 12) | ((pgidx >> 4) & 0x0F80); |
1020 |
} else
|
1021 |
#endif
|
1022 |
{ |
1023 |
ctx->ptem = (vsid << 7) | (pgidx >> 10); |
1024 |
} |
1025 |
/* Initialize real address with an invalid value */
|
1026 |
ctx->raddr = (target_phys_addr_t)-1ULL;
|
1027 |
if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
|
1028 |
env->mmu_model == POWERPC_MMU_SOFT_74xx)) { |
1029 |
/* Software TLB search */
|
1030 |
ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type); |
1031 |
} else {
|
1032 |
#if defined (DEBUG_MMU)
|
1033 |
if (loglevel != 0) { |
1034 |
fprintf(logfile, "0 sdr1=" PADDRX " vsid=" ADDRX " " |
1035 |
"api=" ADDRX " hash=" PADDRX |
1036 |
" pg_addr=" PADDRX "\n", |
1037 |
sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
|
1038 |
} |
1039 |
#endif
|
1040 |
/* Primary table lookup */
|
1041 |
ret = find_pte(env, ctx, 0, rw, type);
|
1042 |
if (ret < 0) { |
1043 |
/* Secondary table lookup */
|
1044 |
#if defined (DEBUG_MMU)
|
1045 |
if (eaddr != 0xEFFFFFFF && loglevel != 0) { |
1046 |
fprintf(logfile, "1 sdr1=" PADDRX " vsid=" ADDRX " " |
1047 |
"api=" ADDRX " hash=" PADDRX |
1048 |
" pg_addr=" PADDRX "\n", |
1049 |
sdr, vsid, pgidx, hash, ctx->pg_addr[1]);
|
1050 |
} |
1051 |
#endif
|
1052 |
ret2 = find_pte(env, ctx, 1, rw, type);
|
1053 |
if (ret2 != -1) |
1054 |
ret = ret2; |
1055 |
} |
1056 |
} |
1057 |
#if defined (DUMP_PAGE_TABLES)
|
1058 |
if (loglevel != 0) { |
1059 |
target_phys_addr_t curaddr; |
1060 |
uint32_t a0, a1, a2, a3; |
1061 |
fprintf(logfile, "Page table: " PADDRX " len " PADDRX "\n", |
1062 |
sdr, mask + 0x80);
|
1063 |
for (curaddr = sdr; curaddr < (sdr + mask + 0x80); |
1064 |
curaddr += 16) {
|
1065 |
a0 = ldl_phys(curaddr); |
1066 |
a1 = ldl_phys(curaddr + 4);
|
1067 |
a2 = ldl_phys(curaddr + 8);
|
1068 |
a3 = ldl_phys(curaddr + 12);
|
1069 |
if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { |
1070 |
fprintf(logfile, PADDRX ": %08x %08x %08x %08x\n",
|
1071 |
curaddr, a0, a1, a2, a3); |
1072 |
} |
1073 |
} |
1074 |
} |
1075 |
#endif
|
1076 |
} else {
|
1077 |
#if defined (DEBUG_MMU)
|
1078 |
if (loglevel != 0) |
1079 |
fprintf(logfile, "No access allowed\n");
|
1080 |
#endif
|
1081 |
ret = -3;
|
1082 |
} |
1083 |
} else {
|
1084 |
#if defined (DEBUG_MMU)
|
1085 |
if (loglevel != 0) |
1086 |
fprintf(logfile, "direct store...\n");
|
1087 |
#endif
|
1088 |
/* Direct-store segment : absolutely *BUGGY* for now */
|
1089 |
switch (type) {
|
1090 |
case ACCESS_INT:
|
1091 |
/* Integer load/store : only access allowed */
|
1092 |
break;
|
1093 |
case ACCESS_CODE:
|
1094 |
/* No code fetch is allowed in direct-store areas */
|
1095 |
return -4; |
1096 |
case ACCESS_FLOAT:
|
1097 |
/* Floating point load/store */
|
1098 |
return -4; |
1099 |
case ACCESS_RES:
|
1100 |
/* lwarx, ldarx or srwcx. */
|
1101 |
return -4; |
1102 |
case ACCESS_CACHE:
|
1103 |
/* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
|
1104 |
/* Should make the instruction do no-op.
|
1105 |
* As it already do no-op, it's quite easy :-)
|
1106 |
*/
|
1107 |
ctx->raddr = eaddr; |
1108 |
return 0; |
1109 |
case ACCESS_EXT:
|
1110 |
/* eciwx or ecowx */
|
1111 |
return -4; |
1112 |
default:
|
1113 |
if (logfile) {
|
1114 |
fprintf(logfile, "ERROR: instruction should not need "
|
1115 |
"address translation\n");
|
1116 |
} |
1117 |
return -4; |
1118 |
} |
1119 |
if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) { |
1120 |
ctx->raddr = eaddr; |
1121 |
ret = 2;
|
1122 |
} else {
|
1123 |
ret = -2;
|
1124 |
} |
1125 |
} |
1126 |
|
1127 |
return ret;
|
1128 |
} |
1129 |
|
1130 |
/* Generic TLB check function for embedded PowerPC implementations */
|
1131 |
static always_inline int ppcemb_tlb_check (CPUState *env, ppcemb_tlb_t *tlb, |
1132 |
target_phys_addr_t *raddrp, |
1133 |
target_ulong address, |
1134 |
uint32_t pid, int ext, int i) |
1135 |
{ |
1136 |
target_ulong mask; |
1137 |
|
1138 |
/* Check valid flag */
|
1139 |
if (!(tlb->prot & PAGE_VALID)) {
|
1140 |
if (loglevel != 0) |
1141 |
fprintf(logfile, "%s: TLB %d not valid\n", __func__, i);
|
1142 |
return -1; |
1143 |
} |
1144 |
mask = ~(tlb->size - 1);
|
1145 |
#if defined (DEBUG_SOFTWARE_TLB)
|
1146 |
if (loglevel != 0) { |
1147 |
fprintf(logfile, "%s: TLB %d address " ADDRX " PID %u <=> " ADDRX |
1148 |
" " ADDRX " %u\n", |
1149 |
__func__, i, address, pid, tlb->EPN, mask, (uint32_t)tlb->PID); |
1150 |
} |
1151 |
#endif
|
1152 |
/* Check PID */
|
1153 |
if (tlb->PID != 0 && tlb->PID != pid) |
1154 |
return -1; |
1155 |
/* Check effective address */
|
1156 |
if ((address & mask) != tlb->EPN)
|
1157 |
return -1; |
1158 |
*raddrp = (tlb->RPN & mask) | (address & ~mask); |
1159 |
#if (TARGET_PHYS_ADDR_BITS >= 36) |
1160 |
if (ext) {
|
1161 |
/* Extend the physical address to 36 bits */
|
1162 |
*raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32; |
1163 |
} |
1164 |
#endif
|
1165 |
|
1166 |
return 0; |
1167 |
} |
1168 |
|
1169 |
/* Generic TLB search function for PowerPC embedded implementations */
|
1170 |
int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
|
1171 |
{ |
1172 |
ppcemb_tlb_t *tlb; |
1173 |
target_phys_addr_t raddr; |
1174 |
int i, ret;
|
1175 |
|
1176 |
/* Default return value is no match */
|
1177 |
ret = -1;
|
1178 |
for (i = 0; i < env->nb_tlb; i++) { |
1179 |
tlb = &env->tlb[i].tlbe; |
1180 |
if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { |
1181 |
ret = i; |
1182 |
break;
|
1183 |
} |
1184 |
} |
1185 |
|
1186 |
return ret;
|
1187 |
} |
1188 |
|
1189 |
/* Helpers specific to PowerPC 40x implementations */
|
1190 |
static always_inline void ppc4xx_tlb_invalidate_all (CPUState *env) |
1191 |
{ |
1192 |
ppcemb_tlb_t *tlb; |
1193 |
int i;
|
1194 |
|
1195 |
for (i = 0; i < env->nb_tlb; i++) { |
1196 |
tlb = &env->tlb[i].tlbe; |
1197 |
tlb->prot &= ~PAGE_VALID; |
1198 |
} |
1199 |
tlb_flush(env, 1);
|
1200 |
} |
1201 |
|
1202 |
static always_inline void ppc4xx_tlb_invalidate_virt (CPUState *env, |
1203 |
target_ulong eaddr, |
1204 |
uint32_t pid) |
1205 |
{ |
1206 |
#if !defined(FLUSH_ALL_TLBS)
|
1207 |
ppcemb_tlb_t *tlb; |
1208 |
target_phys_addr_t raddr; |
1209 |
target_ulong page, end; |
1210 |
int i;
|
1211 |
|
1212 |
for (i = 0; i < env->nb_tlb; i++) { |
1213 |
tlb = &env->tlb[i].tlbe; |
1214 |
if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) { |
1215 |
end = tlb->EPN + tlb->size; |
1216 |
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
|
1217 |
tlb_flush_page(env, page); |
1218 |
tlb->prot &= ~PAGE_VALID; |
1219 |
break;
|
1220 |
} |
1221 |
} |
1222 |
#else
|
1223 |
ppc4xx_tlb_invalidate_all(env); |
1224 |
#endif
|
1225 |
} |
1226 |
|
1227 |
int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
|
1228 |
target_ulong address, int rw, int access_type) |
1229 |
{ |
1230 |
ppcemb_tlb_t *tlb; |
1231 |
target_phys_addr_t raddr; |
1232 |
int i, ret, zsel, zpr, pr;
|
1233 |
|
1234 |
ret = -1;
|
1235 |
raddr = (target_phys_addr_t)-1ULL;
|
1236 |
pr = msr_pr; |
1237 |
for (i = 0; i < env->nb_tlb; i++) { |
1238 |
tlb = &env->tlb[i].tlbe; |
1239 |
if (ppcemb_tlb_check(env, tlb, &raddr, address,
|
1240 |
env->spr[SPR_40x_PID], 0, i) < 0) |
1241 |
continue;
|
1242 |
zsel = (tlb->attr >> 4) & 0xF; |
1243 |
zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3; |
1244 |
#if defined (DEBUG_SOFTWARE_TLB)
|
1245 |
if (loglevel != 0) { |
1246 |
fprintf(logfile, "%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
|
1247 |
__func__, i, zsel, zpr, rw, tlb->attr); |
1248 |
} |
1249 |
#endif
|
1250 |
/* Check execute enable bit */
|
1251 |
switch (zpr) {
|
1252 |
case 0x2: |
1253 |
if (pr != 0) |
1254 |
goto check_perms;
|
1255 |
/* No break here */
|
1256 |
case 0x3: |
1257 |
/* All accesses granted */
|
1258 |
ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
1259 |
ret = 0;
|
1260 |
break;
|
1261 |
case 0x0: |
1262 |
if (pr != 0) { |
1263 |
ctx->prot = 0;
|
1264 |
ret = -2;
|
1265 |
break;
|
1266 |
} |
1267 |
/* No break here */
|
1268 |
case 0x1: |
1269 |
check_perms:
|
1270 |
/* Check from TLB entry */
|
1271 |
/* XXX: there is a problem here or in the TLB fill code... */
|
1272 |
ctx->prot = tlb->prot; |
1273 |
ctx->prot |= PAGE_EXEC; |
1274 |
ret = check_prot(ctx->prot, rw, access_type); |
1275 |
break;
|
1276 |
} |
1277 |
if (ret >= 0) { |
1278 |
ctx->raddr = raddr; |
1279 |
#if defined (DEBUG_SOFTWARE_TLB)
|
1280 |
if (loglevel != 0) { |
1281 |
fprintf(logfile, "%s: access granted " ADDRX " => " PADDRX |
1282 |
" %d %d\n", __func__, address, ctx->raddr, ctx->prot,
|
1283 |
ret); |
1284 |
} |
1285 |
#endif
|
1286 |
return 0; |
1287 |
} |
1288 |
} |
1289 |
#if defined (DEBUG_SOFTWARE_TLB)
|
1290 |
if (loglevel != 0) { |
1291 |
fprintf(logfile, "%s: access refused " ADDRX " => " PADDRX |
1292 |
" %d %d\n", __func__, address, raddr, ctx->prot,
|
1293 |
ret); |
1294 |
} |
1295 |
#endif
|
1296 |
|
1297 |
return ret;
|
1298 |
} |
1299 |
|
1300 |
void store_40x_sler (CPUPPCState *env, uint32_t val)
|
1301 |
{ |
1302 |
/* XXX: TO BE FIXED */
|
1303 |
if (val != 0x00000000) { |
1304 |
cpu_abort(env, "Little-endian regions are not supported by now\n");
|
1305 |
} |
1306 |
env->spr[SPR_405_SLER] = val; |
1307 |
} |
1308 |
|
1309 |
int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
|
1310 |
target_ulong address, int rw,
|
1311 |
int access_type)
|
1312 |
{ |
1313 |
ppcemb_tlb_t *tlb; |
1314 |
target_phys_addr_t raddr; |
1315 |
int i, prot, ret;
|
1316 |
|
1317 |
ret = -1;
|
1318 |
raddr = (target_phys_addr_t)-1ULL;
|
1319 |
for (i = 0; i < env->nb_tlb; i++) { |
1320 |
tlb = &env->tlb[i].tlbe; |
1321 |
if (ppcemb_tlb_check(env, tlb, &raddr, address,
|
1322 |
env->spr[SPR_BOOKE_PID], 1, i) < 0) |
1323 |
continue;
|
1324 |
if (msr_pr != 0) |
1325 |
prot = tlb->prot & 0xF;
|
1326 |
else
|
1327 |
prot = (tlb->prot >> 4) & 0xF; |
1328 |
/* Check the address space */
|
1329 |
if (access_type == ACCESS_CODE) {
|
1330 |
if (msr_ir != (tlb->attr & 1)) |
1331 |
continue;
|
1332 |
ctx->prot = prot; |
1333 |
if (prot & PAGE_EXEC) {
|
1334 |
ret = 0;
|
1335 |
break;
|
1336 |
} |
1337 |
ret = -3;
|
1338 |
} else {
|
1339 |
if (msr_dr != (tlb->attr & 1)) |
1340 |
continue;
|
1341 |
ctx->prot = prot; |
1342 |
if ((!rw && prot & PAGE_READ) || (rw && (prot & PAGE_WRITE))) {
|
1343 |
ret = 0;
|
1344 |
break;
|
1345 |
} |
1346 |
ret = -2;
|
1347 |
} |
1348 |
} |
1349 |
if (ret >= 0) |
1350 |
ctx->raddr = raddr; |
1351 |
|
1352 |
return ret;
|
1353 |
} |
1354 |
|
1355 |
static always_inline int check_physical (CPUState *env, mmu_ctx_t *ctx, |
1356 |
target_ulong eaddr, int rw)
|
1357 |
{ |
1358 |
int in_plb, ret;
|
1359 |
|
1360 |
ctx->raddr = eaddr; |
1361 |
ctx->prot = PAGE_READ | PAGE_EXEC; |
1362 |
ret = 0;
|
1363 |
switch (env->mmu_model) {
|
1364 |
case POWERPC_MMU_32B:
|
1365 |
case POWERPC_MMU_601:
|
1366 |
case POWERPC_MMU_SOFT_6xx:
|
1367 |
case POWERPC_MMU_SOFT_74xx:
|
1368 |
case POWERPC_MMU_SOFT_4xx:
|
1369 |
case POWERPC_MMU_REAL:
|
1370 |
case POWERPC_MMU_BOOKE:
|
1371 |
ctx->prot |= PAGE_WRITE; |
1372 |
break;
|
1373 |
#if defined(TARGET_PPC64)
|
1374 |
case POWERPC_MMU_620:
|
1375 |
case POWERPC_MMU_64B:
|
1376 |
/* Real address are 60 bits long */
|
1377 |
ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
|
1378 |
ctx->prot |= PAGE_WRITE; |
1379 |
break;
|
1380 |
#endif
|
1381 |
case POWERPC_MMU_SOFT_4xx_Z:
|
1382 |
if (unlikely(msr_pe != 0)) { |
1383 |
/* 403 family add some particular protections,
|
1384 |
* using PBL/PBU registers for accesses with no translation.
|
1385 |
*/
|
1386 |
in_plb = |
1387 |
/* Check PLB validity */
|
1388 |
(env->pb[0] < env->pb[1] && |
1389 |
/* and address in plb area */
|
1390 |
eaddr >= env->pb[0] && eaddr < env->pb[1]) || |
1391 |
(env->pb[2] < env->pb[3] && |
1392 |
eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; |
1393 |
if (in_plb ^ msr_px) {
|
1394 |
/* Access in protected area */
|
1395 |
if (rw == 1) { |
1396 |
/* Access is not allowed */
|
1397 |
ret = -2;
|
1398 |
} |
1399 |
} else {
|
1400 |
/* Read-write access is allowed */
|
1401 |
ctx->prot |= PAGE_WRITE; |
1402 |
} |
1403 |
} |
1404 |
break;
|
1405 |
case POWERPC_MMU_MPC8xx:
|
1406 |
/* XXX: TODO */
|
1407 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
1408 |
break;
|
1409 |
case POWERPC_MMU_BOOKE_FSL:
|
1410 |
/* XXX: TODO */
|
1411 |
cpu_abort(env, "BookE FSL MMU model not implemented\n");
|
1412 |
break;
|
1413 |
default:
|
1414 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
1415 |
return -1; |
1416 |
} |
1417 |
|
1418 |
return ret;
|
1419 |
} |
1420 |
|
1421 |
int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
|
1422 |
int rw, int access_type) |
1423 |
{ |
1424 |
int ret;
|
1425 |
|
1426 |
#if 0
|
1427 |
if (loglevel != 0) {
|
1428 |
fprintf(logfile, "%s\n", __func__);
|
1429 |
}
|
1430 |
#endif
|
1431 |
if ((access_type == ACCESS_CODE && msr_ir == 0) || |
1432 |
(access_type != ACCESS_CODE && msr_dr == 0)) {
|
1433 |
/* No address translation */
|
1434 |
ret = check_physical(env, ctx, eaddr, rw); |
1435 |
} else {
|
1436 |
ret = -1;
|
1437 |
switch (env->mmu_model) {
|
1438 |
case POWERPC_MMU_32B:
|
1439 |
case POWERPC_MMU_601:
|
1440 |
case POWERPC_MMU_SOFT_6xx:
|
1441 |
case POWERPC_MMU_SOFT_74xx:
|
1442 |
#if defined(TARGET_PPC64)
|
1443 |
case POWERPC_MMU_620:
|
1444 |
case POWERPC_MMU_64B:
|
1445 |
#endif
|
1446 |
/* Try to find a BAT */
|
1447 |
if (env->nb_BATs != 0) |
1448 |
ret = get_bat(env, ctx, eaddr, rw, access_type); |
1449 |
if (ret < 0) { |
1450 |
/* We didn't match any BAT entry or don't have BATs */
|
1451 |
ret = get_segment(env, ctx, eaddr, rw, access_type); |
1452 |
} |
1453 |
break;
|
1454 |
case POWERPC_MMU_SOFT_4xx:
|
1455 |
case POWERPC_MMU_SOFT_4xx_Z:
|
1456 |
ret = mmu40x_get_physical_address(env, ctx, eaddr, |
1457 |
rw, access_type); |
1458 |
break;
|
1459 |
case POWERPC_MMU_BOOKE:
|
1460 |
ret = mmubooke_get_physical_address(env, ctx, eaddr, |
1461 |
rw, access_type); |
1462 |
break;
|
1463 |
case POWERPC_MMU_MPC8xx:
|
1464 |
/* XXX: TODO */
|
1465 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
1466 |
break;
|
1467 |
case POWERPC_MMU_BOOKE_FSL:
|
1468 |
/* XXX: TODO */
|
1469 |
cpu_abort(env, "BookE FSL MMU model not implemented\n");
|
1470 |
return -1; |
1471 |
case POWERPC_MMU_REAL:
|
1472 |
cpu_abort(env, "PowerPC in real mode do not do any translation\n");
|
1473 |
return -1; |
1474 |
default:
|
1475 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
1476 |
return -1; |
1477 |
} |
1478 |
} |
1479 |
#if 0
|
1480 |
if (loglevel != 0) {
|
1481 |
fprintf(logfile, "%s address " ADDRX " => %d " PADDRX "\n",
|
1482 |
__func__, eaddr, ret, ctx->raddr);
|
1483 |
}
|
1484 |
#endif
|
1485 |
|
1486 |
return ret;
|
1487 |
} |
1488 |
|
1489 |
target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr) |
1490 |
{ |
1491 |
mmu_ctx_t ctx; |
1492 |
|
1493 |
if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) |
1494 |
return -1; |
1495 |
|
1496 |
return ctx.raddr & TARGET_PAGE_MASK;
|
1497 |
} |
1498 |
|
1499 |
/* Perform address translation */
|
1500 |
int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
1501 |
int mmu_idx, int is_softmmu) |
1502 |
{ |
1503 |
mmu_ctx_t ctx; |
1504 |
int access_type;
|
1505 |
int ret = 0; |
1506 |
|
1507 |
if (rw == 2) { |
1508 |
/* code access */
|
1509 |
rw = 0;
|
1510 |
access_type = ACCESS_CODE; |
1511 |
} else {
|
1512 |
/* data access */
|
1513 |
/* XXX: put correct access by using cpu_restore_state()
|
1514 |
correctly */
|
1515 |
access_type = ACCESS_INT; |
1516 |
// access_type = env->access_type;
|
1517 |
} |
1518 |
ret = get_physical_address(env, &ctx, address, rw, access_type); |
1519 |
if (ret == 0) { |
1520 |
ret = tlb_set_page_exec(env, address & TARGET_PAGE_MASK, |
1521 |
ctx.raddr & TARGET_PAGE_MASK, ctx.prot, |
1522 |
mmu_idx, is_softmmu); |
1523 |
} else if (ret < 0) { |
1524 |
#if defined (DEBUG_MMU)
|
1525 |
if (loglevel != 0) |
1526 |
cpu_dump_state(env, logfile, fprintf, 0);
|
1527 |
#endif
|
1528 |
if (access_type == ACCESS_CODE) {
|
1529 |
switch (ret) {
|
1530 |
case -1: |
1531 |
/* No matches in page tables or TLB */
|
1532 |
switch (env->mmu_model) {
|
1533 |
case POWERPC_MMU_SOFT_6xx:
|
1534 |
env->exception_index = POWERPC_EXCP_IFTLB; |
1535 |
env->error_code = 1 << 18; |
1536 |
env->spr[SPR_IMISS] = address; |
1537 |
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
|
1538 |
goto tlb_miss;
|
1539 |
case POWERPC_MMU_SOFT_74xx:
|
1540 |
env->exception_index = POWERPC_EXCP_IFTLB; |
1541 |
goto tlb_miss_74xx;
|
1542 |
case POWERPC_MMU_SOFT_4xx:
|
1543 |
case POWERPC_MMU_SOFT_4xx_Z:
|
1544 |
env->exception_index = POWERPC_EXCP_ITLB; |
1545 |
env->error_code = 0;
|
1546 |
env->spr[SPR_40x_DEAR] = address; |
1547 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
1548 |
break;
|
1549 |
case POWERPC_MMU_32B:
|
1550 |
case POWERPC_MMU_601:
|
1551 |
#if defined(TARGET_PPC64)
|
1552 |
case POWERPC_MMU_620:
|
1553 |
case POWERPC_MMU_64B:
|
1554 |
#endif
|
1555 |
env->exception_index = POWERPC_EXCP_ISI; |
1556 |
env->error_code = 0x40000000;
|
1557 |
break;
|
1558 |
case POWERPC_MMU_BOOKE:
|
1559 |
/* XXX: TODO */
|
1560 |
cpu_abort(env, "BookE MMU model is not implemented\n");
|
1561 |
return -1; |
1562 |
case POWERPC_MMU_BOOKE_FSL:
|
1563 |
/* XXX: TODO */
|
1564 |
cpu_abort(env, "BookE FSL MMU model is not implemented\n");
|
1565 |
return -1; |
1566 |
case POWERPC_MMU_MPC8xx:
|
1567 |
/* XXX: TODO */
|
1568 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
1569 |
break;
|
1570 |
case POWERPC_MMU_REAL:
|
1571 |
cpu_abort(env, "PowerPC in real mode should never raise "
|
1572 |
"any MMU exceptions\n");
|
1573 |
return -1; |
1574 |
default:
|
1575 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
1576 |
return -1; |
1577 |
} |
1578 |
break;
|
1579 |
case -2: |
1580 |
/* Access rights violation */
|
1581 |
env->exception_index = POWERPC_EXCP_ISI; |
1582 |
env->error_code = 0x08000000;
|
1583 |
break;
|
1584 |
case -3: |
1585 |
/* No execute protection violation */
|
1586 |
env->exception_index = POWERPC_EXCP_ISI; |
1587 |
env->error_code = 0x10000000;
|
1588 |
break;
|
1589 |
case -4: |
1590 |
/* Direct store exception */
|
1591 |
/* No code fetch is allowed in direct-store areas */
|
1592 |
env->exception_index = POWERPC_EXCP_ISI; |
1593 |
env->error_code = 0x10000000;
|
1594 |
break;
|
1595 |
#if defined(TARGET_PPC64)
|
1596 |
case -5: |
1597 |
/* No match in segment table */
|
1598 |
if (env->mmu_model == POWERPC_MMU_620) {
|
1599 |
env->exception_index = POWERPC_EXCP_ISI; |
1600 |
/* XXX: this might be incorrect */
|
1601 |
env->error_code = 0x40000000;
|
1602 |
} else {
|
1603 |
env->exception_index = POWERPC_EXCP_ISEG; |
1604 |
env->error_code = 0;
|
1605 |
} |
1606 |
break;
|
1607 |
#endif
|
1608 |
} |
1609 |
} else {
|
1610 |
switch (ret) {
|
1611 |
case -1: |
1612 |
/* No matches in page tables or TLB */
|
1613 |
switch (env->mmu_model) {
|
1614 |
case POWERPC_MMU_SOFT_6xx:
|
1615 |
if (rw == 1) { |
1616 |
env->exception_index = POWERPC_EXCP_DSTLB; |
1617 |
env->error_code = 1 << 16; |
1618 |
} else {
|
1619 |
env->exception_index = POWERPC_EXCP_DLTLB; |
1620 |
env->error_code = 0;
|
1621 |
} |
1622 |
env->spr[SPR_DMISS] = address; |
1623 |
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
|
1624 |
tlb_miss:
|
1625 |
env->error_code |= ctx.key << 19;
|
1626 |
env->spr[SPR_HASH1] = ctx.pg_addr[0];
|
1627 |
env->spr[SPR_HASH2] = ctx.pg_addr[1];
|
1628 |
break;
|
1629 |
case POWERPC_MMU_SOFT_74xx:
|
1630 |
if (rw == 1) { |
1631 |
env->exception_index = POWERPC_EXCP_DSTLB; |
1632 |
} else {
|
1633 |
env->exception_index = POWERPC_EXCP_DLTLB; |
1634 |
} |
1635 |
tlb_miss_74xx:
|
1636 |
/* Implement LRU algorithm */
|
1637 |
env->error_code = ctx.key << 19;
|
1638 |
env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
|
1639 |
((env->last_way + 1) & (env->nb_ways - 1)); |
1640 |
env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
|
1641 |
break;
|
1642 |
case POWERPC_MMU_SOFT_4xx:
|
1643 |
case POWERPC_MMU_SOFT_4xx_Z:
|
1644 |
env->exception_index = POWERPC_EXCP_DTLB; |
1645 |
env->error_code = 0;
|
1646 |
env->spr[SPR_40x_DEAR] = address; |
1647 |
if (rw)
|
1648 |
env->spr[SPR_40x_ESR] = 0x00800000;
|
1649 |
else
|
1650 |
env->spr[SPR_40x_ESR] = 0x00000000;
|
1651 |
break;
|
1652 |
case POWERPC_MMU_32B:
|
1653 |
case POWERPC_MMU_601:
|
1654 |
#if defined(TARGET_PPC64)
|
1655 |
case POWERPC_MMU_620:
|
1656 |
case POWERPC_MMU_64B:
|
1657 |
#endif
|
1658 |
env->exception_index = POWERPC_EXCP_DSI; |
1659 |
env->error_code = 0;
|
1660 |
env->spr[SPR_DAR] = address; |
1661 |
if (rw == 1) |
1662 |
env->spr[SPR_DSISR] = 0x42000000;
|
1663 |
else
|
1664 |
env->spr[SPR_DSISR] = 0x40000000;
|
1665 |
break;
|
1666 |
case POWERPC_MMU_MPC8xx:
|
1667 |
/* XXX: TODO */
|
1668 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
1669 |
break;
|
1670 |
case POWERPC_MMU_BOOKE:
|
1671 |
/* XXX: TODO */
|
1672 |
cpu_abort(env, "BookE MMU model is not implemented\n");
|
1673 |
return -1; |
1674 |
case POWERPC_MMU_BOOKE_FSL:
|
1675 |
/* XXX: TODO */
|
1676 |
cpu_abort(env, "BookE FSL MMU model is not implemented\n");
|
1677 |
return -1; |
1678 |
case POWERPC_MMU_REAL:
|
1679 |
cpu_abort(env, "PowerPC in real mode should never raise "
|
1680 |
"any MMU exceptions\n");
|
1681 |
return -1; |
1682 |
default:
|
1683 |
cpu_abort(env, "Unknown or invalid MMU model\n");
|
1684 |
return -1; |
1685 |
} |
1686 |
break;
|
1687 |
case -2: |
1688 |
/* Access rights violation */
|
1689 |
env->exception_index = POWERPC_EXCP_DSI; |
1690 |
env->error_code = 0;
|
1691 |
env->spr[SPR_DAR] = address; |
1692 |
if (rw == 1) |
1693 |
env->spr[SPR_DSISR] = 0x0A000000;
|
1694 |
else
|
1695 |
env->spr[SPR_DSISR] = 0x08000000;
|
1696 |
break;
|
1697 |
case -4: |
1698 |
/* Direct store exception */
|
1699 |
switch (access_type) {
|
1700 |
case ACCESS_FLOAT:
|
1701 |
/* Floating point load/store */
|
1702 |
env->exception_index = POWERPC_EXCP_ALIGN; |
1703 |
env->error_code = POWERPC_EXCP_ALIGN_FP; |
1704 |
env->spr[SPR_DAR] = address; |
1705 |
break;
|
1706 |
case ACCESS_RES:
|
1707 |
/* lwarx, ldarx or stwcx. */
|
1708 |
env->exception_index = POWERPC_EXCP_DSI; |
1709 |
env->error_code = 0;
|
1710 |
env->spr[SPR_DAR] = address; |
1711 |
if (rw == 1) |
1712 |
env->spr[SPR_DSISR] = 0x06000000;
|
1713 |
else
|
1714 |
env->spr[SPR_DSISR] = 0x04000000;
|
1715 |
break;
|
1716 |
case ACCESS_EXT:
|
1717 |
/* eciwx or ecowx */
|
1718 |
env->exception_index = POWERPC_EXCP_DSI; |
1719 |
env->error_code = 0;
|
1720 |
env->spr[SPR_DAR] = address; |
1721 |
if (rw == 1) |
1722 |
env->spr[SPR_DSISR] = 0x06100000;
|
1723 |
else
|
1724 |
env->spr[SPR_DSISR] = 0x04100000;
|
1725 |
break;
|
1726 |
default:
|
1727 |
printf("DSI: invalid exception (%d)\n", ret);
|
1728 |
env->exception_index = POWERPC_EXCP_PROGRAM; |
1729 |
env->error_code = |
1730 |
POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; |
1731 |
env->spr[SPR_DAR] = address; |
1732 |
break;
|
1733 |
} |
1734 |
break;
|
1735 |
#if defined(TARGET_PPC64)
|
1736 |
case -5: |
1737 |
/* No match in segment table */
|
1738 |
if (env->mmu_model == POWERPC_MMU_620) {
|
1739 |
env->exception_index = POWERPC_EXCP_DSI; |
1740 |
env->error_code = 0;
|
1741 |
env->spr[SPR_DAR] = address; |
1742 |
/* XXX: this might be incorrect */
|
1743 |
if (rw == 1) |
1744 |
env->spr[SPR_DSISR] = 0x42000000;
|
1745 |
else
|
1746 |
env->spr[SPR_DSISR] = 0x40000000;
|
1747 |
} else {
|
1748 |
env->exception_index = POWERPC_EXCP_DSEG; |
1749 |
env->error_code = 0;
|
1750 |
env->spr[SPR_DAR] = address; |
1751 |
} |
1752 |
break;
|
1753 |
#endif
|
1754 |
} |
1755 |
} |
1756 |
#if 0
|
1757 |
printf("%s: set exception to %d %02x\n", __func__,
|
1758 |
env->exception, env->error_code);
|
1759 |
#endif
|
1760 |
ret = 1;
|
1761 |
} |
1762 |
|
1763 |
return ret;
|
1764 |
} |
1765 |
|
1766 |
/*****************************************************************************/
|
1767 |
/* BATs management */
|
1768 |
#if !defined(FLUSH_ALL_TLBS)
|
1769 |
static always_inline void do_invalidate_BAT (CPUPPCState *env, |
1770 |
target_ulong BATu, |
1771 |
target_ulong mask) |
1772 |
{ |
1773 |
target_ulong base, end, page; |
1774 |
|
1775 |
base = BATu & ~0x0001FFFF;
|
1776 |
end = base + mask + 0x00020000;
|
1777 |
#if defined (DEBUG_BATS)
|
1778 |
if (loglevel != 0) { |
1779 |
fprintf(logfile, "Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n", |
1780 |
base, end, mask); |
1781 |
} |
1782 |
#endif
|
1783 |
for (page = base; page != end; page += TARGET_PAGE_SIZE)
|
1784 |
tlb_flush_page(env, page); |
1785 |
#if defined (DEBUG_BATS)
|
1786 |
if (loglevel != 0) |
1787 |
fprintf(logfile, "Flush done\n");
|
1788 |
#endif
|
1789 |
} |
1790 |
#endif
|
1791 |
|
1792 |
static always_inline void dump_store_bat (CPUPPCState *env, char ID, |
1793 |
int ul, int nr, target_ulong value) |
1794 |
{ |
1795 |
#if defined (DEBUG_BATS)
|
1796 |
if (loglevel != 0) { |
1797 |
fprintf(logfile, "Set %cBAT%d%c to " ADDRX " (" ADDRX ")\n", |
1798 |
ID, nr, ul == 0 ? 'u' : 'l', value, env->nip); |
1799 |
} |
1800 |
#endif
|
1801 |
} |
1802 |
|
1803 |
target_ulong do_load_ibatu (CPUPPCState *env, int nr)
|
1804 |
{ |
1805 |
return env->IBAT[0][nr]; |
1806 |
} |
1807 |
|
1808 |
target_ulong do_load_ibatl (CPUPPCState *env, int nr)
|
1809 |
{ |
1810 |
return env->IBAT[1][nr]; |
1811 |
} |
1812 |
|
1813 |
void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value) |
1814 |
{ |
1815 |
target_ulong mask; |
1816 |
|
1817 |
dump_store_bat(env, 'I', 0, nr, value); |
1818 |
if (env->IBAT[0][nr] != value) { |
1819 |
mask = (value << 15) & 0x0FFE0000UL; |
1820 |
#if !defined(FLUSH_ALL_TLBS)
|
1821 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1822 |
#endif
|
1823 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
1824 |
* and invalidate all TLBs covered by this BAT
|
1825 |
*/
|
1826 |
mask = (value << 15) & 0x0FFE0000UL; |
1827 |
env->IBAT[0][nr] = (value & 0x00001FFFUL) | |
1828 |
(value & ~0x0001FFFFUL & ~mask);
|
1829 |
env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) | |
1830 |
(env->IBAT[1][nr] & ~0x0001FFFF & ~mask); |
1831 |
#if !defined(FLUSH_ALL_TLBS)
|
1832 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1833 |
#else
|
1834 |
tlb_flush(env, 1);
|
1835 |
#endif
|
1836 |
} |
1837 |
} |
1838 |
|
1839 |
void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value) |
1840 |
{ |
1841 |
dump_store_bat(env, 'I', 1, nr, value); |
1842 |
env->IBAT[1][nr] = value;
|
1843 |
} |
1844 |
|
1845 |
target_ulong do_load_dbatu (CPUPPCState *env, int nr)
|
1846 |
{ |
1847 |
return env->DBAT[0][nr]; |
1848 |
} |
1849 |
|
1850 |
target_ulong do_load_dbatl (CPUPPCState *env, int nr)
|
1851 |
{ |
1852 |
return env->DBAT[1][nr]; |
1853 |
} |
1854 |
|
1855 |
void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value) |
1856 |
{ |
1857 |
target_ulong mask; |
1858 |
|
1859 |
dump_store_bat(env, 'D', 0, nr, value); |
1860 |
if (env->DBAT[0][nr] != value) { |
1861 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
1862 |
* and invalidate all TLBs covered by this BAT
|
1863 |
*/
|
1864 |
mask = (value << 15) & 0x0FFE0000UL; |
1865 |
#if !defined(FLUSH_ALL_TLBS)
|
1866 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
1867 |
#endif
|
1868 |
mask = (value << 15) & 0x0FFE0000UL; |
1869 |
env->DBAT[0][nr] = (value & 0x00001FFFUL) | |
1870 |
(value & ~0x0001FFFFUL & ~mask);
|
1871 |
env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) | |
1872 |
(env->DBAT[1][nr] & ~0x0001FFFF & ~mask); |
1873 |
#if !defined(FLUSH_ALL_TLBS)
|
1874 |
do_invalidate_BAT(env, env->DBAT[0][nr], mask);
|
1875 |
#else
|
1876 |
tlb_flush(env, 1);
|
1877 |
#endif
|
1878 |
} |
1879 |
} |
1880 |
|
1881 |
void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value) |
1882 |
{ |
1883 |
dump_store_bat(env, 'D', 1, nr, value); |
1884 |
env->DBAT[1][nr] = value;
|
1885 |
} |
1886 |
|
1887 |
void do_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value) |
1888 |
{ |
1889 |
target_ulong mask; |
1890 |
int do_inval;
|
1891 |
|
1892 |
dump_store_bat(env, 'I', 0, nr, value); |
1893 |
if (env->IBAT[0][nr] != value) { |
1894 |
do_inval = 0;
|
1895 |
mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL; |
1896 |
if (env->IBAT[1][nr] & 0x40) { |
1897 |
/* Invalidate BAT only if it is valid */
|
1898 |
#if !defined(FLUSH_ALL_TLBS)
|
1899 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1900 |
#else
|
1901 |
do_inval = 1;
|
1902 |
#endif
|
1903 |
} |
1904 |
/* When storing valid upper BAT, mask BEPI and BRPN
|
1905 |
* and invalidate all TLBs covered by this BAT
|
1906 |
*/
|
1907 |
env->IBAT[0][nr] = (value & 0x00001FFFUL) | |
1908 |
(value & ~0x0001FFFFUL & ~mask);
|
1909 |
env->DBAT[0][nr] = env->IBAT[0][nr]; |
1910 |
if (env->IBAT[1][nr] & 0x40) { |
1911 |
#if !defined(FLUSH_ALL_TLBS)
|
1912 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1913 |
#else
|
1914 |
do_inval = 1;
|
1915 |
#endif
|
1916 |
} |
1917 |
#if defined(FLUSH_ALL_TLBS)
|
1918 |
if (do_inval)
|
1919 |
tlb_flush(env, 1);
|
1920 |
#endif
|
1921 |
} |
1922 |
} |
1923 |
|
1924 |
void do_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value) |
1925 |
{ |
1926 |
target_ulong mask; |
1927 |
int do_inval;
|
1928 |
|
1929 |
dump_store_bat(env, 'I', 1, nr, value); |
1930 |
if (env->IBAT[1][nr] != value) { |
1931 |
do_inval = 0;
|
1932 |
if (env->IBAT[1][nr] & 0x40) { |
1933 |
#if !defined(FLUSH_ALL_TLBS)
|
1934 |
mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL; |
1935 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1936 |
#else
|
1937 |
do_inval = 1;
|
1938 |
#endif
|
1939 |
} |
1940 |
if (value & 0x40) { |
1941 |
#if !defined(FLUSH_ALL_TLBS)
|
1942 |
mask = (value << 17) & 0x0FFE0000UL; |
1943 |
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
|
1944 |
#else
|
1945 |
do_inval = 1;
|
1946 |
#endif
|
1947 |
} |
1948 |
env->IBAT[1][nr] = value;
|
1949 |
env->DBAT[1][nr] = value;
|
1950 |
#if defined(FLUSH_ALL_TLBS)
|
1951 |
if (do_inval)
|
1952 |
tlb_flush(env, 1);
|
1953 |
#endif
|
1954 |
} |
1955 |
} |
1956 |
|
1957 |
/*****************************************************************************/
|
1958 |
/* TLB management */
|
1959 |
void ppc_tlb_invalidate_all (CPUPPCState *env)
|
1960 |
{ |
1961 |
switch (env->mmu_model) {
|
1962 |
case POWERPC_MMU_SOFT_6xx:
|
1963 |
case POWERPC_MMU_SOFT_74xx:
|
1964 |
ppc6xx_tlb_invalidate_all(env); |
1965 |
break;
|
1966 |
case POWERPC_MMU_SOFT_4xx:
|
1967 |
case POWERPC_MMU_SOFT_4xx_Z:
|
1968 |
ppc4xx_tlb_invalidate_all(env); |
1969 |
break;
|
1970 |
case POWERPC_MMU_REAL:
|
1971 |
cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
|
1972 |
break;
|
1973 |
case POWERPC_MMU_MPC8xx:
|
1974 |
/* XXX: TODO */
|
1975 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
1976 |
break;
|
1977 |
case POWERPC_MMU_BOOKE:
|
1978 |
/* XXX: TODO */
|
1979 |
cpu_abort(env, "BookE MMU model is not implemented\n");
|
1980 |
break;
|
1981 |
case POWERPC_MMU_BOOKE_FSL:
|
1982 |
/* XXX: TODO */
|
1983 |
cpu_abort(env, "BookE MMU model is not implemented\n");
|
1984 |
break;
|
1985 |
case POWERPC_MMU_32B:
|
1986 |
case POWERPC_MMU_601:
|
1987 |
#if defined(TARGET_PPC64)
|
1988 |
case POWERPC_MMU_620:
|
1989 |
case POWERPC_MMU_64B:
|
1990 |
#endif /* defined(TARGET_PPC64) */ |
1991 |
tlb_flush(env, 1);
|
1992 |
break;
|
1993 |
default:
|
1994 |
/* XXX: TODO */
|
1995 |
cpu_abort(env, "Unknown MMU model\n");
|
1996 |
break;
|
1997 |
} |
1998 |
} |
1999 |
|
2000 |
void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
|
2001 |
{ |
2002 |
#if !defined(FLUSH_ALL_TLBS)
|
2003 |
addr &= TARGET_PAGE_MASK; |
2004 |
switch (env->mmu_model) {
|
2005 |
case POWERPC_MMU_SOFT_6xx:
|
2006 |
case POWERPC_MMU_SOFT_74xx:
|
2007 |
ppc6xx_tlb_invalidate_virt(env, addr, 0);
|
2008 |
if (env->id_tlbs == 1) |
2009 |
ppc6xx_tlb_invalidate_virt(env, addr, 1);
|
2010 |
break;
|
2011 |
case POWERPC_MMU_SOFT_4xx:
|
2012 |
case POWERPC_MMU_SOFT_4xx_Z:
|
2013 |
ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]); |
2014 |
break;
|
2015 |
case POWERPC_MMU_REAL:
|
2016 |
cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
|
2017 |
break;
|
2018 |
case POWERPC_MMU_MPC8xx:
|
2019 |
/* XXX: TODO */
|
2020 |
cpu_abort(env, "MPC8xx MMU model is not implemented\n");
|
2021 |
break;
|
2022 |
case POWERPC_MMU_BOOKE:
|
2023 |
/* XXX: TODO */
|
2024 |
cpu_abort(env, "BookE MMU model is not implemented\n");
|
2025 |
break;
|
2026 |
case POWERPC_MMU_BOOKE_FSL:
|
2027 |
/* XXX: TODO */
|
2028 |
cpu_abort(env, "BookE FSL MMU model is not implemented\n");
|
2029 |
break;
|
2030 |
case POWERPC_MMU_32B:
|
2031 |
case POWERPC_MMU_601:
|
2032 |
/* tlbie invalidate TLBs for all segments */
|
2033 |
addr &= ~((target_ulong)-1ULL << 28); |
2034 |
/* XXX: this case should be optimized,
|
2035 |
* giving a mask to tlb_flush_page
|
2036 |
*/
|
2037 |
tlb_flush_page(env, addr | (0x0 << 28)); |
2038 |
tlb_flush_page(env, addr | (0x1 << 28)); |
2039 |
tlb_flush_page(env, addr | (0x2 << 28)); |
2040 |
tlb_flush_page(env, addr | (0x3 << 28)); |
2041 |
tlb_flush_page(env, addr | (0x4 << 28)); |
2042 |
tlb_flush_page(env, addr | (0x5 << 28)); |
2043 |
tlb_flush_page(env, addr | (0x6 << 28)); |
2044 |
tlb_flush_page(env, addr | (0x7 << 28)); |
2045 |
tlb_flush_page(env, addr | (0x8 << 28)); |
2046 |
tlb_flush_page(env, addr | (0x9 << 28)); |
2047 |
tlb_flush_page(env, addr | (0xA << 28)); |
2048 |
tlb_flush_page(env, addr | (0xB << 28)); |
2049 |
tlb_flush_page(env, addr | (0xC << 28)); |
2050 |
tlb_flush_page(env, addr | (0xD << 28)); |
2051 |
tlb_flush_page(env, addr | (0xE << 28)); |
2052 |
tlb_flush_page(env, addr | (0xF << 28)); |
2053 |
break;
|
2054 |
#if defined(TARGET_PPC64)
|
2055 |
case POWERPC_MMU_620:
|
2056 |
case POWERPC_MMU_64B:
|
2057 |
/* tlbie invalidate TLBs for all segments */
|
2058 |
/* XXX: given the fact that there are too many segments to invalidate,
|
2059 |
* and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
|
2060 |
* we just invalidate all TLBs
|
2061 |
*/
|
2062 |
tlb_flush(env, 1);
|
2063 |
break;
|
2064 |
#endif /* defined(TARGET_PPC64) */ |
2065 |
default:
|
2066 |
/* XXX: TODO */
|
2067 |
cpu_abort(env, "Unknown MMU model\n");
|
2068 |
break;
|
2069 |
} |
2070 |
#else
|
2071 |
ppc_tlb_invalidate_all(env); |
2072 |
#endif
|
2073 |
} |
2074 |
|
2075 |
/*****************************************************************************/
|
2076 |
/* Special registers manipulation */
|
2077 |
#if defined(TARGET_PPC64)
|
2078 |
target_ulong ppc_load_asr (CPUPPCState *env) |
2079 |
{ |
2080 |
return env->asr;
|
2081 |
} |
2082 |
|
2083 |
void ppc_store_asr (CPUPPCState *env, target_ulong value)
|
2084 |
{ |
2085 |
if (env->asr != value) {
|
2086 |
env->asr = value; |
2087 |
tlb_flush(env, 1);
|
2088 |
} |
2089 |
} |
2090 |
#endif
|
2091 |
|
2092 |
target_ulong do_load_sdr1 (CPUPPCState *env) |
2093 |
{ |
2094 |
return env->sdr1;
|
2095 |
} |
2096 |
|
2097 |
void do_store_sdr1 (CPUPPCState *env, target_ulong value)
|
2098 |
{ |
2099 |
#if defined (DEBUG_MMU)
|
2100 |
if (loglevel != 0) { |
2101 |
fprintf(logfile, "%s: " ADDRX "\n", __func__, value); |
2102 |
} |
2103 |
#endif
|
2104 |
if (env->sdr1 != value) {
|
2105 |
/* XXX: for PowerPC 64, should check that the HTABSIZE value
|
2106 |
* is <= 28
|
2107 |
*/
|
2108 |
env->sdr1 = value; |
2109 |
tlb_flush(env, 1);
|
2110 |
} |
2111 |
} |
2112 |
|
2113 |
#if 0 // Unused
|
2114 |
target_ulong do_load_sr (CPUPPCState *env, int srnum)
|
2115 |
{
|
2116 |
return env->sr[srnum];
|
2117 |
}
|
2118 |
#endif
|
2119 |
|
2120 |
void do_store_sr (CPUPPCState *env, int srnum, target_ulong value) |
2121 |
{ |
2122 |
#if defined (DEBUG_MMU)
|
2123 |
if (loglevel != 0) { |
2124 |
fprintf(logfile, "%s: reg=%d " ADDRX " " ADDRX "\n", |
2125 |
__func__, srnum, value, env->sr[srnum]); |
2126 |
} |
2127 |
#endif
|
2128 |
if (env->sr[srnum] != value) {
|
2129 |
env->sr[srnum] = value; |
2130 |
#if !defined(FLUSH_ALL_TLBS) && 0 |
2131 |
{ |
2132 |
target_ulong page, end; |
2133 |
/* Invalidate 256 MB of virtual memory */
|
2134 |
page = (16 << 20) * srnum; |
2135 |
end = page + (16 << 20); |
2136 |
for (; page != end; page += TARGET_PAGE_SIZE)
|
2137 |
tlb_flush_page(env, page); |
2138 |
} |
2139 |
#else
|
2140 |
tlb_flush(env, 1);
|
2141 |
#endif
|
2142 |
} |
2143 |
} |
2144 |
#endif /* !defined (CONFIG_USER_ONLY) */ |
2145 |
|
2146 |
/* GDBstub can read and write MSR... */
|
2147 |
void ppc_store_msr (CPUPPCState *env, target_ulong value)
|
2148 |
{ |
2149 |
hreg_store_msr(env, value, 0);
|
2150 |
} |
2151 |
|
2152 |
/*****************************************************************************/
|
2153 |
/* Exception processing */
|
2154 |
#if defined (CONFIG_USER_ONLY)
|
2155 |
void do_interrupt (CPUState *env)
|
2156 |
{ |
2157 |
env->exception_index = POWERPC_EXCP_NONE; |
2158 |
env->error_code = 0;
|
2159 |
} |
2160 |
|
2161 |
void ppc_hw_interrupt (CPUState *env)
|
2162 |
{ |
2163 |
env->exception_index = POWERPC_EXCP_NONE; |
2164 |
env->error_code = 0;
|
2165 |
} |
2166 |
#else /* defined (CONFIG_USER_ONLY) */ |
2167 |
static always_inline void dump_syscall (CPUState *env) |
2168 |
{ |
2169 |
fprintf(logfile, "syscall r0=" REGX " r3=" REGX " r4=" REGX |
2170 |
" r5=" REGX " r6=" REGX " nip=" ADDRX "\n", |
2171 |
ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4), |
2172 |
ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6), env->nip); |
2173 |
} |
2174 |
|
2175 |
/* Note that this function should be greatly optimized
|
2176 |
* when called with a constant excp, from ppc_hw_interrupt
|
2177 |
*/
|
2178 |
static always_inline void powerpc_excp (CPUState *env, |
2179 |
int excp_model, int excp) |
2180 |
{ |
2181 |
target_ulong msr, new_msr, vector; |
2182 |
int srr0, srr1, asrr0, asrr1;
|
2183 |
int lpes0, lpes1, lev;
|
2184 |
|
2185 |
if (0) { |
2186 |
/* XXX: find a suitable condition to enable the hypervisor mode */
|
2187 |
lpes0 = (env->spr[SPR_LPCR] >> 1) & 1; |
2188 |
lpes1 = (env->spr[SPR_LPCR] >> 2) & 1; |
2189 |
} else {
|
2190 |
/* Those values ensure we won't enter the hypervisor mode */
|
2191 |
lpes0 = 0;
|
2192 |
lpes1 = 1;
|
2193 |
} |
2194 |
|
2195 |
if (loglevel & CPU_LOG_INT) {
|
2196 |
fprintf(logfile, "Raise exception at " ADDRX " => %08x (%02x)\n", |
2197 |
env->nip, excp, env->error_code); |
2198 |
} |
2199 |
msr = env->msr; |
2200 |
new_msr = msr; |
2201 |
srr0 = SPR_SRR0; |
2202 |
srr1 = SPR_SRR1; |
2203 |
asrr0 = -1;
|
2204 |
asrr1 = -1;
|
2205 |
msr &= ~((target_ulong)0x783F0000);
|
2206 |
switch (excp) {
|
2207 |
case POWERPC_EXCP_NONE:
|
2208 |
/* Should never happen */
|
2209 |
return;
|
2210 |
case POWERPC_EXCP_CRITICAL: /* Critical input */ |
2211 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2212 |
switch (excp_model) {
|
2213 |
case POWERPC_EXCP_40x:
|
2214 |
srr0 = SPR_40x_SRR2; |
2215 |
srr1 = SPR_40x_SRR3; |
2216 |
break;
|
2217 |
case POWERPC_EXCP_BOOKE:
|
2218 |
srr0 = SPR_BOOKE_CSRR0; |
2219 |
srr1 = SPR_BOOKE_CSRR1; |
2220 |
break;
|
2221 |
case POWERPC_EXCP_G2:
|
2222 |
break;
|
2223 |
default:
|
2224 |
goto excp_invalid;
|
2225 |
} |
2226 |
goto store_next;
|
2227 |
case POWERPC_EXCP_MCHECK: /* Machine check exception */ |
2228 |
if (msr_me == 0) { |
2229 |
/* Machine check exception is not enabled.
|
2230 |
* Enter checkstop state.
|
2231 |
*/
|
2232 |
if (loglevel != 0) { |
2233 |
fprintf(logfile, "Machine check while not allowed. "
|
2234 |
"Entering checkstop state\n");
|
2235 |
} else {
|
2236 |
fprintf(stderr, "Machine check while not allowed. "
|
2237 |
"Entering checkstop state\n");
|
2238 |
} |
2239 |
env->halted = 1;
|
2240 |
env->interrupt_request |= CPU_INTERRUPT_EXITTB; |
2241 |
} |
2242 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2243 |
new_msr &= ~((target_ulong)1 << MSR_ME);
|
2244 |
if (0) { |
2245 |
/* XXX: find a suitable condition to enable the hypervisor mode */
|
2246 |
new_msr |= (target_ulong)MSR_HVB; |
2247 |
} |
2248 |
/* XXX: should also have something loaded in DAR / DSISR */
|
2249 |
switch (excp_model) {
|
2250 |
case POWERPC_EXCP_40x:
|
2251 |
srr0 = SPR_40x_SRR2; |
2252 |
srr1 = SPR_40x_SRR3; |
2253 |
break;
|
2254 |
case POWERPC_EXCP_BOOKE:
|
2255 |
srr0 = SPR_BOOKE_MCSRR0; |
2256 |
srr1 = SPR_BOOKE_MCSRR1; |
2257 |
asrr0 = SPR_BOOKE_CSRR0; |
2258 |
asrr1 = SPR_BOOKE_CSRR1; |
2259 |
break;
|
2260 |
default:
|
2261 |
break;
|
2262 |
} |
2263 |
goto store_next;
|
2264 |
case POWERPC_EXCP_DSI: /* Data storage exception */ |
2265 |
#if defined (DEBUG_EXCEPTIONS)
|
2266 |
if (loglevel != 0) { |
2267 |
fprintf(logfile, "DSI exception: DSISR=" ADDRX" DAR=" ADDRX "\n", |
2268 |
env->spr[SPR_DSISR], env->spr[SPR_DAR]); |
2269 |
} |
2270 |
#endif
|
2271 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2272 |
if (lpes1 == 0) |
2273 |
new_msr |= (target_ulong)MSR_HVB; |
2274 |
goto store_next;
|
2275 |
case POWERPC_EXCP_ISI: /* Instruction storage exception */ |
2276 |
#if defined (DEBUG_EXCEPTIONS)
|
2277 |
if (loglevel != 0) { |
2278 |
fprintf(logfile, "ISI exception: msr=" ADDRX ", nip=" ADDRX "\n", |
2279 |
msr, env->nip); |
2280 |
} |
2281 |
#endif
|
2282 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2283 |
if (lpes1 == 0) |
2284 |
new_msr |= (target_ulong)MSR_HVB; |
2285 |
msr |= env->error_code; |
2286 |
goto store_next;
|
2287 |
case POWERPC_EXCP_EXTERNAL: /* External input */ |
2288 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2289 |
if (lpes0 == 1) |
2290 |
new_msr |= (target_ulong)MSR_HVB; |
2291 |
goto store_next;
|
2292 |
case POWERPC_EXCP_ALIGN: /* Alignment exception */ |
2293 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2294 |
if (lpes1 == 0) |
2295 |
new_msr |= (target_ulong)MSR_HVB; |
2296 |
/* XXX: this is false */
|
2297 |
/* Get rS/rD and rA from faulting opcode */
|
2298 |
env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16; |
2299 |
goto store_current;
|
2300 |
case POWERPC_EXCP_PROGRAM: /* Program exception */ |
2301 |
switch (env->error_code & ~0xF) { |
2302 |
case POWERPC_EXCP_FP:
|
2303 |
if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) { |
2304 |
#if defined (DEBUG_EXCEPTIONS)
|
2305 |
if (loglevel != 0) { |
2306 |
fprintf(logfile, "Ignore floating point exception\n");
|
2307 |
} |
2308 |
#endif
|
2309 |
env->exception_index = POWERPC_EXCP_NONE; |
2310 |
env->error_code = 0;
|
2311 |
return;
|
2312 |
} |
2313 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2314 |
if (lpes1 == 0) |
2315 |
new_msr |= (target_ulong)MSR_HVB; |
2316 |
msr |= 0x00100000;
|
2317 |
if (msr_fe0 == msr_fe1)
|
2318 |
goto store_next;
|
2319 |
msr |= 0x00010000;
|
2320 |
break;
|
2321 |
case POWERPC_EXCP_INVAL:
|
2322 |
#if defined (DEBUG_EXCEPTIONS)
|
2323 |
if (loglevel != 0) { |
2324 |
fprintf(logfile, "Invalid instruction at " ADDRX "\n", |
2325 |
env->nip); |
2326 |
} |
2327 |
#endif
|
2328 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2329 |
if (lpes1 == 0) |
2330 |
new_msr |= (target_ulong)MSR_HVB; |
2331 |
msr |= 0x00080000;
|
2332 |
break;
|
2333 |
case POWERPC_EXCP_PRIV:
|
2334 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2335 |
if (lpes1 == 0) |
2336 |
new_msr |= (target_ulong)MSR_HVB; |
2337 |
msr |= 0x00040000;
|
2338 |
break;
|
2339 |
case POWERPC_EXCP_TRAP:
|
2340 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2341 |
if (lpes1 == 0) |
2342 |
new_msr |= (target_ulong)MSR_HVB; |
2343 |
msr |= 0x00020000;
|
2344 |
break;
|
2345 |
default:
|
2346 |
/* Should never occur */
|
2347 |
cpu_abort(env, "Invalid program exception %d. Aborting\n",
|
2348 |
env->error_code); |
2349 |
break;
|
2350 |
} |
2351 |
goto store_current;
|
2352 |
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ |
2353 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2354 |
if (lpes1 == 0) |
2355 |
new_msr |= (target_ulong)MSR_HVB; |
2356 |
goto store_current;
|
2357 |
case POWERPC_EXCP_SYSCALL: /* System call exception */ |
2358 |
/* NOTE: this is a temporary hack to support graphics OSI
|
2359 |
calls from the MOL driver */
|
2360 |
/* XXX: To be removed */
|
2361 |
if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b && |
2362 |
env->osi_call) { |
2363 |
if (env->osi_call(env) != 0) { |
2364 |
env->exception_index = POWERPC_EXCP_NONE; |
2365 |
env->error_code = 0;
|
2366 |
return;
|
2367 |
} |
2368 |
} |
2369 |
if (loglevel & CPU_LOG_INT) {
|
2370 |
dump_syscall(env); |
2371 |
} |
2372 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2373 |
lev = env->error_code; |
2374 |
if (lev == 1 || (lpes0 == 0 && lpes1 == 0)) |
2375 |
new_msr |= (target_ulong)MSR_HVB; |
2376 |
goto store_next;
|
2377 |
case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ |
2378 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2379 |
goto store_current;
|
2380 |
case POWERPC_EXCP_DECR: /* Decrementer exception */ |
2381 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2382 |
if (lpes1 == 0) |
2383 |
new_msr |= (target_ulong)MSR_HVB; |
2384 |
goto store_next;
|
2385 |
case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ |
2386 |
/* FIT on 4xx */
|
2387 |
#if defined (DEBUG_EXCEPTIONS)
|
2388 |
if (loglevel != 0) |
2389 |
fprintf(logfile, "FIT exception\n");
|
2390 |
#endif
|
2391 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2392 |
goto store_next;
|
2393 |
case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ |
2394 |
#if defined (DEBUG_EXCEPTIONS)
|
2395 |
if (loglevel != 0) |
2396 |
fprintf(logfile, "WDT exception\n");
|
2397 |
#endif
|
2398 |
switch (excp_model) {
|
2399 |
case POWERPC_EXCP_BOOKE:
|
2400 |
srr0 = SPR_BOOKE_CSRR0; |
2401 |
srr1 = SPR_BOOKE_CSRR1; |
2402 |
break;
|
2403 |
default:
|
2404 |
break;
|
2405 |
} |
2406 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2407 |
goto store_next;
|
2408 |
case POWERPC_EXCP_DTLB: /* Data TLB error */ |
2409 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2410 |
goto store_next;
|
2411 |
case POWERPC_EXCP_ITLB: /* Instruction TLB error */ |
2412 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2413 |
goto store_next;
|
2414 |
case POWERPC_EXCP_DEBUG: /* Debug interrupt */ |
2415 |
switch (excp_model) {
|
2416 |
case POWERPC_EXCP_BOOKE:
|
2417 |
srr0 = SPR_BOOKE_DSRR0; |
2418 |
srr1 = SPR_BOOKE_DSRR1; |
2419 |
asrr0 = SPR_BOOKE_CSRR0; |
2420 |
asrr1 = SPR_BOOKE_CSRR1; |
2421 |
break;
|
2422 |
default:
|
2423 |
break;
|
2424 |
} |
2425 |
/* XXX: TODO */
|
2426 |
cpu_abort(env, "Debug exception is not implemented yet !\n");
|
2427 |
goto store_next;
|
2428 |
case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */ |
2429 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2430 |
goto store_current;
|
2431 |
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */ |
2432 |
/* XXX: TODO */
|
2433 |
cpu_abort(env, "Embedded floating point data exception "
|
2434 |
"is not implemented yet !\n");
|
2435 |
goto store_next;
|
2436 |
case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */ |
2437 |
/* XXX: TODO */
|
2438 |
cpu_abort(env, "Embedded floating point round exception "
|
2439 |
"is not implemented yet !\n");
|
2440 |
goto store_next;
|
2441 |
case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */ |
2442 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2443 |
/* XXX: TODO */
|
2444 |
cpu_abort(env, |
2445 |
"Performance counter exception is not implemented yet !\n");
|
2446 |
goto store_next;
|
2447 |
case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ |
2448 |
/* XXX: TODO */
|
2449 |
cpu_abort(env, |
2450 |
"Embedded doorbell interrupt is not implemented yet !\n");
|
2451 |
goto store_next;
|
2452 |
case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ |
2453 |
switch (excp_model) {
|
2454 |
case POWERPC_EXCP_BOOKE:
|
2455 |
srr0 = SPR_BOOKE_CSRR0; |
2456 |
srr1 = SPR_BOOKE_CSRR1; |
2457 |
break;
|
2458 |
default:
|
2459 |
break;
|
2460 |
} |
2461 |
/* XXX: TODO */
|
2462 |
cpu_abort(env, "Embedded doorbell critical interrupt "
|
2463 |
"is not implemented yet !\n");
|
2464 |
goto store_next;
|
2465 |
case POWERPC_EXCP_RESET: /* System reset exception */ |
2466 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2467 |
if (0) { |
2468 |
/* XXX: find a suitable condition to enable the hypervisor mode */
|
2469 |
new_msr |= (target_ulong)MSR_HVB; |
2470 |
} |
2471 |
goto store_next;
|
2472 |
case POWERPC_EXCP_DSEG: /* Data segment exception */ |
2473 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2474 |
if (lpes1 == 0) |
2475 |
new_msr |= (target_ulong)MSR_HVB; |
2476 |
goto store_next;
|
2477 |
case POWERPC_EXCP_ISEG: /* Instruction segment exception */ |
2478 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2479 |
if (lpes1 == 0) |
2480 |
new_msr |= (target_ulong)MSR_HVB; |
2481 |
goto store_next;
|
2482 |
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
2483 |
srr0 = SPR_HSRR0; |
2484 |
srr1 = SPR_HSRR1; |
2485 |
new_msr |= (target_ulong)MSR_HVB; |
2486 |
goto store_next;
|
2487 |
case POWERPC_EXCP_TRACE: /* Trace exception */ |
2488 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2489 |
if (lpes1 == 0) |
2490 |
new_msr |= (target_ulong)MSR_HVB; |
2491 |
goto store_next;
|
2492 |
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
2493 |
srr0 = SPR_HSRR0; |
2494 |
srr1 = SPR_HSRR1; |
2495 |
new_msr |= (target_ulong)MSR_HVB; |
2496 |
goto store_next;
|
2497 |
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */ |
2498 |
srr0 = SPR_HSRR0; |
2499 |
srr1 = SPR_HSRR1; |
2500 |
new_msr |= (target_ulong)MSR_HVB; |
2501 |
goto store_next;
|
2502 |
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ |
2503 |
srr0 = SPR_HSRR0; |
2504 |
srr1 = SPR_HSRR1; |
2505 |
new_msr |= (target_ulong)MSR_HVB; |
2506 |
goto store_next;
|
2507 |
case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */ |
2508 |
srr0 = SPR_HSRR0; |
2509 |
srr1 = SPR_HSRR1; |
2510 |
new_msr |= (target_ulong)MSR_HVB; |
2511 |
goto store_next;
|
2512 |
case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
2513 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2514 |
if (lpes1 == 0) |
2515 |
new_msr |= (target_ulong)MSR_HVB; |
2516 |
goto store_current;
|
2517 |
case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */ |
2518 |
#if defined (DEBUG_EXCEPTIONS)
|
2519 |
if (loglevel != 0) |
2520 |
fprintf(logfile, "PIT exception\n");
|
2521 |
#endif
|
2522 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2523 |
goto store_next;
|
2524 |
case POWERPC_EXCP_IO: /* IO error exception */ |
2525 |
/* XXX: TODO */
|
2526 |
cpu_abort(env, "601 IO error exception is not implemented yet !\n");
|
2527 |
goto store_next;
|
2528 |
case POWERPC_EXCP_RUNM: /* Run mode exception */ |
2529 |
/* XXX: TODO */
|
2530 |
cpu_abort(env, "601 run mode exception is not implemented yet !\n");
|
2531 |
goto store_next;
|
2532 |
case POWERPC_EXCP_EMUL: /* Emulation trap exception */ |
2533 |
/* XXX: TODO */
|
2534 |
cpu_abort(env, "602 emulation trap exception "
|
2535 |
"is not implemented yet !\n");
|
2536 |
goto store_next;
|
2537 |
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ |
2538 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2539 |
if (lpes1 == 0) /* XXX: check this */ |
2540 |
new_msr |= (target_ulong)MSR_HVB; |
2541 |
switch (excp_model) {
|
2542 |
case POWERPC_EXCP_602:
|
2543 |
case POWERPC_EXCP_603:
|
2544 |
case POWERPC_EXCP_603E:
|
2545 |
case POWERPC_EXCP_G2:
|
2546 |
goto tlb_miss_tgpr;
|
2547 |
case POWERPC_EXCP_7x5:
|
2548 |
goto tlb_miss;
|
2549 |
case POWERPC_EXCP_74xx:
|
2550 |
goto tlb_miss_74xx;
|
2551 |
default:
|
2552 |
cpu_abort(env, "Invalid instruction TLB miss exception\n");
|
2553 |
break;
|
2554 |
} |
2555 |
break;
|
2556 |
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ |
2557 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2558 |
if (lpes1 == 0) /* XXX: check this */ |
2559 |
new_msr |= (target_ulong)MSR_HVB; |
2560 |
switch (excp_model) {
|
2561 |
case POWERPC_EXCP_602:
|
2562 |
case POWERPC_EXCP_603:
|
2563 |
case POWERPC_EXCP_603E:
|
2564 |
case POWERPC_EXCP_G2:
|
2565 |
goto tlb_miss_tgpr;
|
2566 |
case POWERPC_EXCP_7x5:
|
2567 |
goto tlb_miss;
|
2568 |
case POWERPC_EXCP_74xx:
|
2569 |
goto tlb_miss_74xx;
|
2570 |
default:
|
2571 |
cpu_abort(env, "Invalid data load TLB miss exception\n");
|
2572 |
break;
|
2573 |
} |
2574 |
break;
|
2575 |
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ |
2576 |
new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */ |
2577 |
if (lpes1 == 0) /* XXX: check this */ |
2578 |
new_msr |= (target_ulong)MSR_HVB; |
2579 |
switch (excp_model) {
|
2580 |
case POWERPC_EXCP_602:
|
2581 |
case POWERPC_EXCP_603:
|
2582 |
case POWERPC_EXCP_603E:
|
2583 |
case POWERPC_EXCP_G2:
|
2584 |
tlb_miss_tgpr:
|
2585 |
/* Swap temporary saved registers with GPRs */
|
2586 |
if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) { |
2587 |
new_msr |= (target_ulong)1 << MSR_TGPR;
|
2588 |
hreg_swap_gpr_tgpr(env); |
2589 |
} |
2590 |
goto tlb_miss;
|
2591 |
case POWERPC_EXCP_7x5:
|
2592 |
tlb_miss:
|
2593 |
#if defined (DEBUG_SOFTWARE_TLB)
|
2594 |
if (loglevel != 0) { |
2595 |
const unsigned char *es; |
2596 |
target_ulong *miss, *cmp; |
2597 |
int en;
|
2598 |
if (excp == POWERPC_EXCP_IFTLB) {
|
2599 |
es = "I";
|
2600 |
en = 'I';
|
2601 |
miss = &env->spr[SPR_IMISS]; |
2602 |
cmp = &env->spr[SPR_ICMP]; |
2603 |
} else {
|
2604 |
if (excp == POWERPC_EXCP_DLTLB)
|
2605 |
es = "DL";
|
2606 |
else
|
2607 |
es = "DS";
|
2608 |
en = 'D';
|
2609 |
miss = &env->spr[SPR_DMISS]; |
2610 |
cmp = &env->spr[SPR_DCMP]; |
2611 |
} |
2612 |
fprintf(logfile, "6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX |
2613 |
" H1 " ADDRX " H2 " ADDRX " %08x\n", |
2614 |
es, en, *miss, en, *cmp, |
2615 |
env->spr[SPR_HASH1], env->spr[SPR_HASH2], |
2616 |
env->error_code); |
2617 |
} |
2618 |
#endif
|
2619 |
msr |= env->crf[0] << 28; |
2620 |
msr |= env->error_code; /* key, D/I, S/L bits */
|
2621 |
/* Set way using a LRU mechanism */
|
2622 |
msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17; |
2623 |
break;
|
2624 |
case POWERPC_EXCP_74xx:
|
2625 |
tlb_miss_74xx:
|
2626 |
#if defined (DEBUG_SOFTWARE_TLB)
|
2627 |
if (loglevel != 0) { |
2628 |
const unsigned char *es; |
2629 |
target_ulong *miss, *cmp; |
2630 |
int en;
|
2631 |
if (excp == POWERPC_EXCP_IFTLB) {
|
2632 |
es = "I";
|
2633 |
en = 'I';
|
2634 |
miss = &env->spr[SPR_TLBMISS]; |
2635 |
cmp = &env->spr[SPR_PTEHI]; |
2636 |
} else {
|
2637 |
if (excp == POWERPC_EXCP_DLTLB)
|
2638 |
es = "DL";
|
2639 |
else
|
2640 |
es = "DS";
|
2641 |
en = 'D';
|
2642 |
miss = &env->spr[SPR_TLBMISS]; |
2643 |
cmp = &env->spr[SPR_PTEHI]; |
2644 |
} |
2645 |
fprintf(logfile, "74xx %sTLB miss: %cM " ADDRX " %cC " ADDRX |
2646 |
" %08x\n",
|
2647 |
es, en, *miss, en, *cmp, env->error_code); |
2648 |
} |
2649 |
#endif
|
2650 |
msr |= env->error_code; /* key bit */
|
2651 |
break;
|
2652 |
default:
|
2653 |
cpu_abort(env, "Invalid data store TLB miss exception\n");
|
2654 |
break;
|
2655 |
} |
2656 |
goto store_next;
|
2657 |
case POWERPC_EXCP_FPA: /* Floating-point assist exception */ |
2658 |
/* XXX: TODO */
|
2659 |
cpu_abort(env, "Floating point assist exception "
|
2660 |
"is not implemented yet !\n");
|
2661 |
goto store_next;
|
2662 |
case POWERPC_EXCP_DABR: /* Data address breakpoint */ |
2663 |
/* XXX: TODO */
|
2664 |
cpu_abort(env, "DABR exception is not implemented yet !\n");
|
2665 |
goto store_next;
|
2666 |
case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ |
2667 |
/* XXX: TODO */
|
2668 |
cpu_abort(env, "IABR exception is not implemented yet !\n");
|
2669 |
goto store_next;
|
2670 |
case POWERPC_EXCP_SMI: /* System management interrupt */ |
2671 |
/* XXX: TODO */
|
2672 |
cpu_abort(env, "SMI exception is not implemented yet !\n");
|
2673 |
goto store_next;
|
2674 |
case POWERPC_EXCP_THERM: /* Thermal interrupt */ |
2675 |
/* XXX: TODO */
|
2676 |
cpu_abort(env, "Thermal management exception "
|
2677 |
"is not implemented yet !\n");
|
2678 |
goto store_next;
|
2679 |
case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */ |
2680 |
new_msr &= ~((target_ulong)1 << MSR_RI);
|
2681 |
if (lpes1 == 0) |
2682 |
new_msr |= (target_ulong)MSR_HVB; |
2683 |
/* XXX: TODO */
|
2684 |
cpu_abort(env, |
2685 |
"Performance counter exception is not implemented yet !\n");
|
2686 |
goto store_next;
|
2687 |
case POWERPC_EXCP_VPUA: /* Vector assist exception */ |
2688 |
/* XXX: TODO */
|
2689 |
cpu_abort(env, "VPU assist exception is not implemented yet !\n");
|
2690 |
goto store_next;
|
2691 |
case POWERPC_EXCP_SOFTP: /* Soft patch exception */ |
2692 |
/* XXX: TODO */
|
2693 |
cpu_abort(env, |
2694 |
"970 soft-patch exception is not implemented yet !\n");
|
2695 |
goto store_next;
|
2696 |
case POWERPC_EXCP_MAINT: /* Maintenance exception */ |
2697 |
/* XXX: TODO */
|
2698 |
cpu_abort(env, |
2699 |
"970 maintenance exception is not implemented yet !\n");
|
2700 |
goto store_next;
|
2701 |
case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */ |
2702 |
/* XXX: TODO */
|
2703 |
cpu_abort(env, "Maskable external exception "
|
2704 |
"is not implemented yet !\n");
|
2705 |
goto store_next;
|
2706 |
case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */ |
2707 |
/* XXX: TODO */
|
2708 |
cpu_abort(env, "Non maskable external exception "
|
2709 |
"is not implemented yet !\n");
|
2710 |
goto store_next;
|
2711 |
default:
|
2712 |
excp_invalid:
|
2713 |
cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
|
2714 |
break;
|
2715 |
store_current:
|
2716 |
/* save current instruction location */
|
2717 |
env->spr[srr0] = env->nip - 4;
|
2718 |
break;
|
2719 |
store_next:
|
2720 |
/* save next instruction location */
|
2721 |
env->spr[srr0] = env->nip; |
2722 |
break;
|
2723 |
} |
2724 |
/* Save MSR */
|
2725 |
env->spr[srr1] = msr; |
2726 |
/* If any alternate SRR register are defined, duplicate saved values */
|
2727 |
if (asrr0 != -1) |
2728 |
env->spr[asrr0] = env->spr[srr0]; |
2729 |
if (asrr1 != -1) |
2730 |
env->spr[asrr1] = env->spr[srr1]; |
2731 |
/* If we disactivated any translation, flush TLBs */
|
2732 |
if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR))) |
2733 |
tlb_flush(env, 1);
|
2734 |
/* reload MSR with correct bits */
|
2735 |
new_msr &= ~((target_ulong)1 << MSR_EE);
|
2736 |
new_msr &= ~((target_ulong)1 << MSR_PR);
|
2737 |
new_msr &= ~((target_ulong)1 << MSR_FP);
|
2738 |
new_msr &= ~((target_ulong)1 << MSR_FE0);
|
2739 |
new_msr &= ~((target_ulong)1 << MSR_SE);
|
2740 |
new_msr &= ~((target_ulong)1 << MSR_BE);
|
2741 |
new_msr &= ~((target_ulong)1 << MSR_FE1);
|
2742 |
new_msr &= ~((target_ulong)1 << MSR_IR);
|
2743 |
new_msr &= ~((target_ulong)1 << MSR_DR);
|
2744 |
#if 0 /* Fix this: not on all targets */
|
2745 |
new_msr &= ~((target_ulong)1 << MSR_PMM);
|
2746 |
#endif
|
2747 |
new_msr &= ~((target_ulong)1 << MSR_LE);
|
2748 |
if (msr_ile)
|
2749 |
new_msr |= (target_ulong)1 << MSR_LE;
|
2750 |
else
|
2751 |
new_msr &= ~((target_ulong)1 << MSR_LE);
|
2752 |
/* Jump to handler */
|
2753 |
vector = env->excp_vectors[excp]; |
2754 |
if (vector == (target_ulong)-1ULL) { |
2755 |
cpu_abort(env, "Raised an exception without defined vector %d\n",
|
2756 |
excp); |
2757 |
} |
2758 |
vector |= env->excp_prefix; |
2759 |
#if defined(TARGET_PPC64)
|
2760 |
if (excp_model == POWERPC_EXCP_BOOKE) {
|
2761 |
if (!msr_icm) {
|
2762 |
new_msr &= ~((target_ulong)1 << MSR_CM);
|
2763 |
vector = (uint32_t)vector; |
2764 |
} else {
|
2765 |
new_msr |= (target_ulong)1 << MSR_CM;
|
2766 |
} |
2767 |
} else {
|
2768 |
if (!msr_isf) {
|
2769 |
new_msr &= ~((target_ulong)1 << MSR_SF);
|
2770 |
vector = (uint32_t)vector; |
2771 |
} else {
|
2772 |
new_msr |= (target_ulong)1 << MSR_SF;
|
2773 |
} |
2774 |
} |
2775 |
#endif
|
2776 |
/* XXX: we don't use hreg_store_msr here as already have treated
|
2777 |
* any special case that could occur. Just store MSR and update hflags
|
2778 |
*/
|
2779 |
env->msr = new_msr & env->msr_mask; |
2780 |
hreg_compute_hflags(env); |
2781 |
env->nip = vector; |
2782 |
/* Reset exception state */
|
2783 |
env->exception_index = POWERPC_EXCP_NONE; |
2784 |
env->error_code = 0;
|
2785 |
} |
2786 |
|
2787 |
void do_interrupt (CPUState *env)
|
2788 |
{ |
2789 |
powerpc_excp(env, env->excp_model, env->exception_index); |
2790 |
} |
2791 |
|
2792 |
void ppc_hw_interrupt (CPUPPCState *env)
|
2793 |
{ |
2794 |
int hdice;
|
2795 |
|
2796 |
#if 0
|
2797 |
if (loglevel & CPU_LOG_INT) {
|
2798 |
fprintf(logfile, "%s: %p pending %08x req %08x me %d ee %d\n",
|
2799 |
__func__, env, env->pending_interrupts,
|
2800 |
env->interrupt_request, (int)msr_me, (int)msr_ee);
|
2801 |
}
|
2802 |
#endif
|
2803 |
/* External reset */
|
2804 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) { |
2805 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
|
2806 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET); |
2807 |
return;
|
2808 |
} |
2809 |
/* Machine check exception */
|
2810 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) { |
2811 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
|
2812 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK); |
2813 |
return;
|
2814 |
} |
2815 |
#if 0 /* TODO */
|
2816 |
/* External debug exception */
|
2817 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
|
2818 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
|
2819 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
|
2820 |
return;
|
2821 |
}
|
2822 |
#endif
|
2823 |
if (0) { |
2824 |
/* XXX: find a suitable condition to enable the hypervisor mode */
|
2825 |
hdice = env->spr[SPR_LPCR] & 1;
|
2826 |
} else {
|
2827 |
hdice = 0;
|
2828 |
} |
2829 |
if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) { |
2830 |
/* Hypervisor decrementer exception */
|
2831 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) { |
2832 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
|
2833 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR); |
2834 |
return;
|
2835 |
} |
2836 |
} |
2837 |
if (msr_ce != 0) { |
2838 |
/* External critical interrupt */
|
2839 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) { |
2840 |
/* Taking a critical external interrupt does not clear the external
|
2841 |
* critical interrupt status
|
2842 |
*/
|
2843 |
#if 0
|
2844 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
|
2845 |
#endif
|
2846 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL); |
2847 |
return;
|
2848 |
} |
2849 |
} |
2850 |
if (msr_ee != 0) { |
2851 |
/* Watchdog timer on embedded PowerPC */
|
2852 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) { |
2853 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
|
2854 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT); |
2855 |
return;
|
2856 |
} |
2857 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) { |
2858 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
|
2859 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI); |
2860 |
return;
|
2861 |
} |
2862 |
/* Fixed interval timer on embedded PowerPC */
|
2863 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) { |
2864 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
|
2865 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT); |
2866 |
return;
|
2867 |
} |
2868 |
/* Programmable interval timer on embedded PowerPC */
|
2869 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) { |
2870 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
|
2871 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT); |
2872 |
return;
|
2873 |
} |
2874 |
/* Decrementer exception */
|
2875 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) { |
2876 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
|
2877 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR); |
2878 |
return;
|
2879 |
} |
2880 |
/* External interrupt */
|
2881 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) { |
2882 |
/* Taking an external interrupt does not clear the external
|
2883 |
* interrupt status
|
2884 |
*/
|
2885 |
#if 0
|
2886 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
|
2887 |
#endif
|
2888 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL); |
2889 |
return;
|
2890 |
} |
2891 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) { |
2892 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
|
2893 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI); |
2894 |
return;
|
2895 |
} |
2896 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) { |
2897 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
|
2898 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM); |
2899 |
return;
|
2900 |
} |
2901 |
/* Thermal interrupt */
|
2902 |
if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) { |
2903 |
env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
|
2904 |
powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM); |
2905 |
return;
|
2906 |
} |
2907 |
} |
2908 |
} |
2909 |
#endif /* !CONFIG_USER_ONLY */ |
2910 |
|
2911 |
void cpu_dump_rfi (target_ulong RA, target_ulong msr)
|
2912 |
{ |
2913 |
FILE *f; |
2914 |
|
2915 |
if (logfile) {
|
2916 |
f = logfile; |
2917 |
} else {
|
2918 |
f = stdout; |
2919 |
return;
|
2920 |
} |
2921 |
fprintf(f, "Return from exception at " ADDRX " with flags " ADDRX "\n", |
2922 |
RA, msr); |
2923 |
} |
2924 |
|
2925 |
void cpu_ppc_reset (void *opaque) |
2926 |
{ |
2927 |
CPUPPCState *env; |
2928 |
target_ulong msr; |
2929 |
|
2930 |
env = opaque; |
2931 |
msr = (target_ulong)0;
|
2932 |
if (0) { |
2933 |
/* XXX: find a suitable condition to enable the hypervisor mode */
|
2934 |
msr |= (target_ulong)MSR_HVB; |
2935 |
} |
2936 |
msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */ |
2937 |
msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */ |
2938 |
msr |= (target_ulong)1 << MSR_EP;
|
2939 |
#if defined (DO_SINGLE_STEP) && 0 |
2940 |
/* Single step trace mode */
|
2941 |
msr |= (target_ulong)1 << MSR_SE;
|
2942 |
msr |= (target_ulong)1 << MSR_BE;
|
2943 |
#endif
|
2944 |
#if defined(CONFIG_USER_ONLY)
|
2945 |
msr |= (target_ulong)1 << MSR_FP; /* Allow floating point usage */ |
2946 |
msr |= (target_ulong)1 << MSR_PR;
|
2947 |
#else
|
2948 |
env->nip = env->hreset_vector | env->excp_prefix; |
2949 |
if (env->mmu_model != POWERPC_MMU_REAL)
|
2950 |
ppc_tlb_invalidate_all(env); |
2951 |
#endif
|
2952 |
env->msr = msr; |
2953 |
hreg_compute_hflags(env); |
2954 |
env->reserve = (target_ulong)-1ULL;
|
2955 |
/* Be sure no exception or interrupt is pending */
|
2956 |
env->pending_interrupts = 0;
|
2957 |
env->exception_index = POWERPC_EXCP_NONE; |
2958 |
env->error_code = 0;
|
2959 |
/* Flush all TLBs */
|
2960 |
tlb_flush(env, 1);
|
2961 |
} |
2962 |
|
2963 |
CPUPPCState *cpu_ppc_init (const char *cpu_model) |
2964 |
{ |
2965 |
CPUPPCState *env; |
2966 |
const ppc_def_t *def;
|
2967 |
|
2968 |
def = cpu_ppc_find_by_name(cpu_model); |
2969 |
if (!def)
|
2970 |
return NULL; |
2971 |
|
2972 |
env = qemu_mallocz(sizeof(CPUPPCState));
|
2973 |
if (!env)
|
2974 |
return NULL; |
2975 |
cpu_exec_init(env); |
2976 |
ppc_translate_init(); |
2977 |
env->cpu_model_str = cpu_model; |
2978 |
cpu_ppc_register_internal(env, def); |
2979 |
cpu_ppc_reset(env); |
2980 |
return env;
|
2981 |
} |
2982 |
|
2983 |
void cpu_ppc_close (CPUPPCState *env)
|
2984 |
{ |
2985 |
/* Should also remove all opcode tables... */
|
2986 |
qemu_free(env); |
2987 |
} |