1409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli/* 2409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * MIPS emulation helpers for qemu. 3409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * 4409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * Copyright (c) 2004-2005 Jocelyn Mayer 5409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * 6409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * This library is free software; you can redistribute it and/or 7409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * modify it under the terms of the GNU Lesser General Public 8409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * License as published by the Free Software Foundation; either 9409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * version 2 of the License, or (at your option) any later version. 10409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * 11409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * This library is distributed in the hope that it will be useful, 12409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * but WITHOUT ANY WARRANTY; without even the implied warranty of 13409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * Lesser General Public License for more details. 15409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * 16409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * You should have received a copy of the GNU Lesser General Public 17409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli */ 19409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <stdarg.h> 20409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <stdlib.h> 21409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <stdio.h> 22409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <string.h> 23409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <inttypes.h> 24409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include <signal.h> 25409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 26409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include "cpu.h" 27409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#include "exec-all.h" 28409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 29409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallienum { 30409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli TLBRET_DIRTY = -4, 31409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli TLBRET_INVALID = -3, 32409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli TLBRET_NOMATCH = -2, 33409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli TLBRET_BADADDR = -1, 34409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli TLBRET_MATCH = 0 35409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli}; 36409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 37409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli/* no MMU emulation */ 38409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalliint no_mmu_map_address (CPUState *env, target_phys_addr_t *physical, int *prot, 39409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong address, int rw, int access_type) 40409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 41409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address; 42409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 43409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_MATCH; 44409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 45409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 46409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli/* fixed mapping MMU emulation */ 47409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalliint fixed_mmu_map_address (CPUState *env, target_phys_addr_t *physical, int *prot, 48409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong address, int rw, int access_type) 49409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 50409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (address <= (int32_t)0x7FFFFFFFUL) { 51409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (!(env->CP0_Status & (1 << CP0St_ERL))) 52409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address + 0x40000000UL; 53409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 54409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address; 55409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address <= (int32_t)0xBFFFFFFFUL) 56409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address & 0x1FFFFFFF; 57409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 58409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address; 59409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 60409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 61409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_MATCH; 62409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 63409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 64409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli/* MIPS32/MIPS64 R4000-style MMU emulation */ 65409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalliint r4k_map_address (CPUState *env, target_phys_addr_t *physical, int *prot, 66409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong address, int rw, int access_type) 67409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 68409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli uint8_t ASID = env->CP0_EntryHi & 0xFF; 6955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman r4k_tlb_t *tlb; 7055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong mask; 7155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong tag; 7255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong VPN; 7355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int n; 74409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int i; 75409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 7655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman for (i = 0; i < env->tlb->nb_tlb; i++) { 7755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman tlb = &env->tlb->mmu.r4k.tlb[i]; 78409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* 1k pages are not supported. */ 7955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman mask = ~(TARGET_PAGE_MASK << 1); 8055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman tag = address & ~mask; 8155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman VPN = tlb->VPN & ~mask; 8255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 83409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 84409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli tag &= env->SEGMask; 85409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 86409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 87409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Check ASID, virtual page number & size */ 88409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag) { 89409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* TLB match */ 9055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman n = !!(address & mask & ~(mask >> 1)); 91409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Check access rights */ 92409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (!(n ? tlb->V1 : tlb->V0)) 93409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_INVALID; 94409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (rw == 0 || (n ? tlb->D1 : tlb->D0)) { 95409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = tlb->PFN[n] | (address & (mask >> 1)); 96409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ; 97409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (n ? tlb->D1 : tlb->D0) 98409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot |= PAGE_WRITE; 99409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_MATCH; 100409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 101409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_DIRTY; 102409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 103409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 104409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return TLBRET_NOMATCH; 105409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 106409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 107409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if !defined(CONFIG_USER_ONLY) 108409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallistatic int get_physical_address (CPUState *env, target_phys_addr_t *physical, 109409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int *prot, target_ulong address, 110409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int rw, int access_type) 111409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 112409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* User mode can only access useg/xuseg */ 113409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int user_mode = (env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM; 114409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int supervisor_mode = (env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_SM; 115409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int kernel_mode = !user_mode && !supervisor_mode; 116409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 117409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int UX = (env->CP0_Status & (1 << CP0St_UX)) != 0; 118409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int SX = (env->CP0_Status & (1 << CP0St_SX)) != 0; 119409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0; 120409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 121409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int ret = TLBRET_MATCH; 122409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 123409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if 0 124409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("user mode %d h %08x\n", user_mode, env->hflags); 125409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 126409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 127409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (address <= (int32_t)0x7FFFFFFFUL) { 128409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* useg */ 12955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (unlikely(env->CP0_Status & (1 << CP0St_ERL))) { 130409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address & 0xFFFFFFFF; 131409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 132409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 133409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 134409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 135409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 136409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < 0x4000000000000000ULL) { 137409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* xuseg */ 138409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (UX && address <= (0x3FFFFFFFFFFFFFFFULL & env->SEGMask)) { 139409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 140409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 141409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 142409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 143409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < 0x8000000000000000ULL) { 144409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* xsseg */ 145409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if ((supervisor_mode || kernel_mode) && 146409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli SX && address <= (0x7FFFFFFFFFFFFFFFULL & env->SEGMask)) { 147409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 148409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 149409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 150409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 151409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < 0xC000000000000000ULL) { 152409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* xkphys */ 153409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (kernel_mode && KX && 154409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli (address & 0x07FFFFFFFFFFFFFFULL) <= env->PAMask) { 155409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address & env->PAMask; 156409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 157409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 158409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 159409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 160409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < 0xFFFFFFFF80000000ULL) { 161409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* xkseg */ 162409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (kernel_mode && KX && 163409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli address <= (0xFFFFFFFF7FFFFFFFULL & env->SEGMask)) { 164409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 165409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 166409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 167409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 168409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 169409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < (int32_t)0xA0000000UL) { 170409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* kseg0 */ 171409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (kernel_mode) { 172409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address - (int32_t)0x80000000UL; 173409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 174409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 175409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 176409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 177409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < (int32_t)0xC0000000UL) { 178409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* kseg1 */ 179409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (kernel_mode) { 180409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *physical = address - (int32_t)0xA0000000UL; 181409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli *prot = PAGE_READ | PAGE_WRITE; 182409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 183409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 184409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 185409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else if (address < (int32_t)0xE0000000UL) { 186409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* sseg (kseg2) */ 187409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (supervisor_mode || kernel_mode) { 188409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 189409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 190409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 191409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 192409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 193409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* kseg3 */ 194409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* XXX: debug segment is not emulated */ 195409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (kernel_mode) { 196409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); 197409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 198409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_BADADDR; 199409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 200409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 201409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if 0 202409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log(TARGET_FMT_lx " %d %d => " TARGET_FMT_lx " %d (%d)\n", 203409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli address, rw, access_type, *physical, *prot, ret); 204409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 205409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 206409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return ret; 207409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 208409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 209409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 210409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallistatic void raise_mmu_exception(CPUState *env, target_ulong address, 211409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int rw, int tlb_error) 212409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 213409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int exception = 0, error_code = 0; 214409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 215409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli switch (tlb_error) { 216409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli default: 217409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case TLBRET_BADADDR: 218409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Reference to kernel address from user mode or supervisor mode */ 219409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Reference to supervisor address from user mode */ 220409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (rw) 221409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_AdES; 222409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 223409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_AdEL; 224409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 225409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case TLBRET_NOMATCH: 226409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* No TLB match for a mapped address */ 227409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (rw) 228409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_TLBS; 229409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 230409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_TLBL; 231409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli error_code = 1; 232409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 233409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case TLBRET_INVALID: 234409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* TLB match with no valid bit */ 235409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (rw) 236409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_TLBS; 237409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 238409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_TLBL; 239409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 240409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case TLBRET_DIRTY: 241409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* TLB match but 'D' bit is cleared */ 242409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exception = EXCP_LTLBL; 243409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 244409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 245409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 246409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Raise exception */ 247409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_BadVAddr = address; 248409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Context = (env->CP0_Context & ~0x007fffff) | 249409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ((address >> 9) & 0x007ffff0); 250409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_EntryHi = 251409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli (env->CP0_EntryHi & 0xFF) | (address & (TARGET_PAGE_MASK << 1)); 252409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 253409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_EntryHi &= env->SEGMask; 254409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_XContext = (env->CP0_XContext & ((~0ULL) << (env->SEGBITS - 7))) | 255409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ((address & 0xC00000000000ULL) >> (55 - env->SEGBITS)) | 256409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ((address & ((1ULL << env->SEGBITS) - 1) & 0xFFFFFFFFFFFFE000ULL) >> 9); 257409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 258409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->exception_index = exception; 259409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->error_code = error_code; 260409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 261409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 26255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman/* 26355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * Get the pgd_current from TLB exception handler 26455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * The exception handler is generated by function build_r4000_tlb_refill_handler. 26555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * 0x80000000:0x3c1b8033: lui k1,0x8033 26655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * 0x80000004:0x401a4000: mfc0 k0,c0_badvaddr 26755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * 0x80000008:0x8f7bb000: lw k1,-20480(k1) 26855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * 26955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman */ 27055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearmanstatic inline target_ulong cpu_mips_get_pgd(CPUState *env) 271409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 27255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman static target_ulong pgd_current_p = 0; 27355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman static target_ulong probed = 0; 274409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 27555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (likely(pgd_current_p)) { 27655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* Get pgd_current */ 27755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return ldl_phys(pgd_current_p); 27855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 27955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman else if (unlikely(!probed)) { 28055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman uint32_t ins1, ins2; 28155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman uint32_t address; 28255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman uint32_t ebase; 28355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 28455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman probed = 1; 28555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 28655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ebase = env->CP0_EBase - 0x80000000; 28755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 28855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* Get pgd_current pointer from TLB refill exception handler */ 28955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ins1 = ldl_phys(ebase); /* lui k1,%hi(pgd_current_p) */ 29055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ins2 = ldl_phys(ebase + 8); /* lw k1,%lo(pgd_current_p)(k1) */ 29155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 29255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman address = ((ins1 & 0xffff)<<16); 29355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman address += (((int32_t)(ins2 & 0xffff))<<16)>>16; 29455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* assumes pgd_current_p != 0 */ 29555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (address > 0x80000000 && address < 0xa0000000) { 29655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pgd_current_p = address -= 0x80000000; 29755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return ldl_phys(pgd_current_p); 29855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 29955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 30055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return 0; 30155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman} 30255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 30355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearmanstatic inline int cpu_mips_tlb_refill(CPUState *env, target_ulong address, int rw , 30455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int mmu_idx, int is_softmmu) 30555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman{ 30655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int32_t saved_hflags; 30755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong saved_badvaddr,saved_entryhi,saved_context; 30855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 30955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong pgd_addr,pt_addr,index; 31055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong fault_addr,ptw_phys; 31155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong elo_even,elo_odd; 31255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman uint32_t page_valid; 31355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int ret; 31455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 31555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman saved_badvaddr = env->CP0_BadVAddr; 31655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman saved_context = env->CP0_Context; 31755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman saved_entryhi = env->CP0_EntryHi; 31855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman saved_hflags = env->hflags; 31955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 32055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_BadVAddr = address; 32155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_Context = (env->CP0_Context & ~0x007fffff) | 32255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ((address >> 9) & 0x007ffff0); 32355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_EntryHi = 32455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman (env->CP0_EntryHi & 0xFF) | (address & (TARGET_PAGE_MASK << 1)); 32555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 32655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->hflags = MIPS_HFLAG_KM; 32755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 32855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman fault_addr = env->CP0_BadVAddr; 32955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman page_valid = 0; 33055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 33155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pgd_addr = cpu_mips_get_pgd(env); 33255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (unlikely(!pgd_addr)) 33355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman { 33455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /*not valid pgd_addr,just return.*/ 33555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman //return TLBRET_NOMATCH; 33655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = TLBRET_NOMATCH; 33755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman goto out; 33855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 33955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 34055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ptw_phys = pgd_addr - (int32_t)0x80000000UL; 34155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman index = (fault_addr>>22)<<2; 34255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ptw_phys += index; 34355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 34455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pt_addr = ldl_phys(ptw_phys); 34555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 34655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ptw_phys = pt_addr - (int32_t)0x80000000UL; 34755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman index = (env->CP0_Context>>1)&0xff8; 34855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ptw_phys += index; 34955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 35055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /*get the page table entry*/ 35155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman elo_even = ldl_phys(ptw_phys); 35255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman elo_odd = ldl_phys(ptw_phys+4); 35355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman elo_even = elo_even >> 6; 35455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman elo_odd = elo_odd >> 6; 35555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_EntryLo0 = elo_even; 35655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_EntryLo1 = elo_odd; 35755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /*Done. refill the TLB */ 35855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman r4k_helper_ptw_tlbrefill(env); 35955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 36055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* Since we know the value of TLB entry, we can 36155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman * return the TLB lookup value here. 36255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman */ 36355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 36455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->hflags = saved_hflags; 36555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 36655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong mask = env->CP0_PageMask | ~(TARGET_PAGE_MASK << 1); 36755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int n = !!(address & mask & ~(mask >> 1)); 36855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* Check access rights */ 36955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (!(n ? (elo_odd & 2) != 0 : (elo_even & 2) != 0)) 37055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman { 37155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = TLBRET_INVALID; 37255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman goto out; 37355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 37455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 37555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (rw == 0 || (n ? (elo_odd & 4) != 0 : (elo_even & 4) != 0)) { 37655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong physical = (n?(elo_odd >> 6) << 12 : (elo_even >> 6) << 12); 37755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman physical |= (address & (mask >> 1)); 37855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int prot = PAGE_READ; 37955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (n ? (elo_odd & 4) != 0 : (elo_even & 4) != 0) 38055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman prot |= PAGE_WRITE; 38155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 38255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman tlb_set_page(env, address & TARGET_PAGE_MASK, 38355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman physical & TARGET_PAGE_MASK, prot, 38455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman mmu_idx, is_softmmu); 38555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = TLBRET_MATCH; 38655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman goto out; 38755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 38855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = TLBRET_DIRTY; 38955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 39055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearmanout: 39155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_BadVAddr = saved_badvaddr; 39255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_Context = saved_context; 39355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->CP0_EntryHi = saved_entryhi; 39455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman env->hflags = saved_hflags; 39555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return ret; 396409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 397409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 398409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalliint cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw, 399409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int mmu_idx, int is_softmmu) 400409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 401409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if !defined(CONFIG_USER_ONLY) 402409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_phys_addr_t physical; 403409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int prot; 404409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 40555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int exception = 0, error_code = 0; 406409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int access_type; 407409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int ret = 0; 408409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 409409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if 0 410409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli log_cpu_state(env, 0); 411409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 412409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("%s pc " TARGET_FMT_lx " ad " TARGET_FMT_lx " rw %d mmu_idx %d smmu %d\n", 413409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli __func__, env->active_tc.PC, address, rw, mmu_idx, is_softmmu); 414409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 415409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli rw &= 1; 416409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 417409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* data access */ 418409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* XXX: put correct access by using cpu_restore_state() 419409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli correctly */ 420409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli access_type = ACCESS_INT; 421409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(CONFIG_USER_ONLY) 422409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = TLBRET_NOMATCH; 423409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#else 424409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = get_physical_address(env, &physical, &prot, 425409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli address, rw, access_type); 426409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("%s address=" TARGET_FMT_lx " ret %d physical " TARGET_FMT_plx " prot %d\n", 427409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli __func__, address, ret, physical, prot); 428409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (ret == TLBRET_MATCH) { 429409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = tlb_set_page(env, address & TARGET_PAGE_MASK, 430409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli physical & TARGET_PAGE_MASK, prot, 431409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli mmu_idx, is_softmmu); 43255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 43355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman else if (ret == TLBRET_NOMATCH) 43455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = cpu_mips_tlb_refill(env,address,rw,mmu_idx,is_softmmu); 43555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (ret < 0) 436409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 437409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli { 438409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli raise_mmu_exception(env, address, rw, ret); 439409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = 1; 440409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 441409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 442409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return ret; 443409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 444409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 445409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if !defined(CONFIG_USER_ONLY) 446409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallitarget_phys_addr_t cpu_mips_translate_address(CPUState *env, target_ulong address, int rw) 447409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 448409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_phys_addr_t physical; 449409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int prot; 450409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int access_type; 451409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int ret = 0; 452409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 453409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli rw &= 1; 454409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 455409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* data access */ 456409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli access_type = ACCESS_INT; 457409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli ret = get_physical_address(env, &physical, &prot, 458409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli address, rw, access_type); 459f15a9e8294ea7b8441415b8a45490dbfd5eb3bd5Bhanu Chetlapalli if (ret != TLBRET_MATCH || ret != TLBRET_DIRTY) { 460409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli raise_mmu_exception(env, address, rw, ret); 461409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return -1LL; 462409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 463409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return physical; 464409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 465409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 466409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 467409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 46855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearmantarget_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) 46955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman{ 47055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman#if defined(CONFIG_USER_ONLY) 47155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return addr; 47255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman#else 47355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_phys_addr_t phys_addr; 47455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman int prot, ret; 47555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 47655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman ret = get_physical_address(env, &phys_addr, &prot, addr, 0, ACCESS_INT); 47755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (ret != TLBRET_MATCH && ret != TLBRET_DIRTY) { 47855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong pgd_addr = cpu_mips_get_pgd(env); 47955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (unlikely(!pgd_addr)) { 48055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman phys_addr = -1; 48155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 48255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman else { 48355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong pgd_phys, pgd_index; 48455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong pt_addr, pt_phys, pt_index; 48555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman target_ulong lo; 48655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* Mimic the steps taken for a TLB refill */ 48755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pgd_phys = pgd_addr - (int32_t)0x80000000UL; 48855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pgd_index = (addr >> 22) << 2; 48955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pt_addr = ldl_phys(pgd_phys + pgd_index); 49055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pt_phys = pt_addr - (int32_t)0x80000000UL; 49155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman pt_index = (((addr >> 9) & 0x007ffff0) >> 1) & 0xff8; 49255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* get the entrylo value */ 49355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (addr & 0x1000) 49455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman lo = ldl_phys(pt_phys + pt_index + 4); 49555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman else 49655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman lo = ldl_phys(pt_phys + pt_index); 49755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* convert software TLB entry to hardware value */ 49855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman lo >>= 6; 49955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman if (lo & 0x00000002) 50055ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman /* It is valid */ 50155ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman phys_addr = (lo >> 6) << 12; 50255ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman else 50355ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman phys_addr = -1; 50455ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 50555ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman } 50655ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman return phys_addr; 50755ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman#endif 50855ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman} 50955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearman 510409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallistatic const char * const excp_names[EXCP_LAST + 1] = { 511409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_RESET] = "reset", 512409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_SRESET] = "soft reset", 513409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DSS] = "debug single step", 514409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DINT] = "debug interrupt", 515409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_NMI] = "non-maskable interrupt", 516409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_MCHECK] = "machine check", 517409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_EXT_INTERRUPT] = "interrupt", 518409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DFWATCH] = "deferred watchpoint", 519409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DIB] = "debug instruction breakpoint", 520409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_IWATCH] = "instruction fetch watchpoint", 521409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_AdEL] = "address error load", 522409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_AdES] = "address error store", 523409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_TLBF] = "TLB refill", 524409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_IBE] = "instruction bus error", 525409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DBp] = "debug breakpoint", 526409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_SYSCALL] = "syscall", 527409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_BREAK] = "break", 528409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_CpU] = "coprocessor unusable", 529409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_RI] = "reserved instruction", 530409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_OVERFLOW] = "arithmetic overflow", 531409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_TRAP] = "trap", 532409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_FPE] = "floating point", 533409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DDBS] = "debug data break store", 534409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DWATCH] = "data watchpoint", 535409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_LTLBL] = "TLB modify", 536409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_TLBL] = "TLB load", 537409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_TLBS] = "TLB store", 538409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DBE] = "data bus error", 539409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_DDBL] = "debug data break load", 540409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_THREAD] = "thread", 541409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_MDMX] = "MDMX", 542409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_C2E] = "precise coprocessor 2", 543409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli [EXCP_CACHE] = "cache error", 544409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli}; 545409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 546409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapallivoid do_interrupt (CPUState *env) 547409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 548409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if !defined(CONFIG_USER_ONLY) 549409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong offset; 550409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int cause = -1; 551409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli const char *name; 552409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 553409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (qemu_log_enabled() && env->exception_index != EXCP_EXT_INTERRUPT) { 554409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->exception_index < 0 || env->exception_index > EXCP_LAST) 555409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli name = "unknown"; 556409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 557409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli name = excp_names[env->exception_index]; 558409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 559409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("%s enter: PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx " %s exception\n", 560409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli __func__, env->active_tc.PC, env->CP0_EPC, name); 561409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 562409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->exception_index == EXCP_EXT_INTERRUPT && 563409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli (env->hflags & MIPS_HFLAG_DM)) 564409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->exception_index = EXCP_DINT; 565409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x180; 566409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli switch (env->exception_index) { 567409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DSS: 568409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DSS; 569409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* Debug single step cannot be raised inside a delay slot and 570409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli resume will always occur on the next instruction 571409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli (but we assume the pc has always been updated during 572409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli code translation). */ 573409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_DEPC = env->active_tc.PC; 574409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto enter_debug_mode; 575409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DINT: 576409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DINT; 577409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_DEPC; 578409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DIB: 579409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DIB; 580409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_DEPC; 581409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DBp: 582409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DBp; 583409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_DEPC; 584409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DDBS: 585409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DDBS; 586409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_DEPC; 587409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DDBL: 588409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Debug |= 1 << CP0DB_DDBL; 589409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli set_DEPC: 590409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->hflags & MIPS_HFLAG_BMASK) { 591409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* If the exception was raised from a delay slot, 592409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli come back to the jump. */ 593409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_DEPC = env->active_tc.PC - 4; 594409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~MIPS_HFLAG_BMASK; 595409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 596409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_DEPC = env->active_tc.PC; 597409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 598409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli enter_debug_mode: 599409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags |= MIPS_HFLAG_DM | MIPS_HFLAG_64 | MIPS_HFLAG_CP0; 600409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~(MIPS_HFLAG_KSU); 601409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* EJTAG probe trap enable is not implemented... */ 602409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (!(env->CP0_Status & (1 << CP0St_EXL))) 603409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause &= ~(1 << CP0Ca_BD); 604409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->active_tc.PC = (int32_t)0xBFC00480; 605409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 606409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_RESET: 607409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cpu_reset(env); 608409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 609409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_SRESET: 610409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Status |= (1 << CP0St_SR); 611409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli memset(env->CP0_WatchLo, 0, sizeof(*env->CP0_WatchLo)); 612409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_error_EPC; 613409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_NMI: 614409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Status |= (1 << CP0St_NMI); 615409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli set_error_EPC: 616409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->hflags & MIPS_HFLAG_BMASK) { 617409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* If the exception was raised from a delay slot, 618409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli come back to the jump. */ 619409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_ErrorEPC = env->active_tc.PC - 4; 620409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~MIPS_HFLAG_BMASK; 621409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 622409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_ErrorEPC = env->active_tc.PC; 623409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 624409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Status |= (1 << CP0St_ERL) | (1 << CP0St_BEV); 625409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags |= MIPS_HFLAG_64 | MIPS_HFLAG_CP0; 626409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~(MIPS_HFLAG_KSU); 627409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (!(env->CP0_Status & (1 << CP0St_EXL))) 628409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause &= ~(1 << CP0Ca_BD); 629409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->active_tc.PC = (int32_t)0xBFC00000; 630409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 631409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_EXT_INTERRUPT: 632409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 0; 633409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->CP0_Cause & (1 << CP0Ca_IV)) 634409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x200; 635409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 636409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_LTLBL: 637409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 1; 638409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 639409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_TLBL: 640409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 2; 641409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->error_code == 1 && !(env->CP0_Status & (1 << CP0St_EXL))) { 642409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 643409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int R = env->CP0_BadVAddr >> 62; 644409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int UX = (env->CP0_Status & (1 << CP0St_UX)) != 0; 645409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int SX = (env->CP0_Status & (1 << CP0St_SX)) != 0; 646409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0; 647409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 648409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if ((R == 0 && UX) || (R == 1 && SX) || (R == 3 && KX)) 649409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x080; 650409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 651409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 652409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x000; 653409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 654409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 655409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_TLBS: 656409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 3; 657409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->error_code == 1 && !(env->CP0_Status & (1 << CP0St_EXL))) { 658409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 659409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int R = env->CP0_BadVAddr >> 62; 660409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int UX = (env->CP0_Status & (1 << CP0St_UX)) != 0; 661409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int SX = (env->CP0_Status & (1 << CP0St_SX)) != 0; 662409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0; 663409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 664409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if ((R == 0 && UX) || (R == 1 && SX) || (R == 3 && KX)) 665409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x080; 666409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli else 667409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 668409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x000; 669409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 670409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 671409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_AdEL: 672409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 4; 673409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 674409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_AdES: 675409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 5; 676409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 677409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_IBE: 678409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 6; 679409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 680409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DBE: 681409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 7; 682409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 683409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_SYSCALL: 684409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 8; 685409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 686409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_BREAK: 687409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 9; 688409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 689409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_RI: 690409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 10; 691409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 692409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_CpU: 693409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 11; 694409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause = (env->CP0_Cause & ~(0x3 << CP0Ca_CE)) | 695409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli (env->error_code << CP0Ca_CE); 696409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 697409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_OVERFLOW: 698409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 12; 699409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 700409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_TRAP: 701409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 13; 702409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 703409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_FPE: 704409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 15; 705409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 706409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_C2E: 707409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 18; 708409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 709409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_MDMX: 710409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 22; 711409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 712409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_DWATCH: 713409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 23; 714409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* XXX: TODO: manage defered watch exceptions */ 715409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 716409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_MCHECK: 717409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 24; 718409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 719409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_THREAD: 720409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 25; 721409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli goto set_EPC; 722409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli case EXCP_CACHE: 723409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli cause = 30; 724409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->CP0_Status & (1 << CP0St_BEV)) { 725409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x100; 726409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 727409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli offset = 0x20000100; 728409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 729409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli set_EPC: 730409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (!(env->CP0_Status & (1 << CP0St_EXL))) { 731409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->hflags & MIPS_HFLAG_BMASK) { 732409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* If the exception was raised from a delay slot, 733409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli come back to the jump. */ 734409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_EPC = env->active_tc.PC - 4; 735409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause |= (1 << CP0Ca_BD); 736409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 737409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_EPC = env->active_tc.PC; 738409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause &= ~(1 << CP0Ca_BD); 739409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 740409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Status |= (1 << CP0St_EXL); 741409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags |= MIPS_HFLAG_64 | MIPS_HFLAG_CP0; 742409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~(MIPS_HFLAG_KSU); 743409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 744409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->hflags &= ~MIPS_HFLAG_BMASK; 745409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (env->CP0_Status & (1 << CP0St_BEV)) { 746409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->active_tc.PC = (int32_t)0xBFC00200; 747409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } else { 748409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->active_tc.PC = (int32_t)(env->CP0_EBase & ~0x3ff); 749409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 750409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->active_tc.PC += offset; 751409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Cause = (env->CP0_Cause & ~(0x1f << CP0Ca_EC)) | (cause << CP0Ca_EC); 752409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli break; 753409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli default: 754409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("Invalid MIPS exception %d. Exiting\n", env->exception_index); 755409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli printf("Invalid MIPS exception %d. Exiting\n", env->exception_index); 756409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli exit(1); 757409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 758409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (qemu_log_enabled() && env->exception_index != EXCP_EXT_INTERRUPT) { 759409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli qemu_log("%s: PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx " cause %d\n" 760409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli " S %08x C %08x A " TARGET_FMT_lx " D " TARGET_FMT_lx "\n", 761409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli __func__, env->active_tc.PC, env->CP0_EPC, cause, 762409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_Status, env->CP0_Cause, env->CP0_BadVAddr, 763409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->CP0_DEPC); 764409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 765409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 766409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli env->exception_index = EXCP_NONE; 767409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 768409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 76955ff318b4e5382074e2049c996cb6df1041aff1bChris Dearmanvoid r4k_invalidate_tlb (CPUState *env, int idx) 770409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli{ 771409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli r4k_tlb_t *tlb; 772409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong addr; 773409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong end; 774409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli uint8_t ASID = env->CP0_EntryHi & 0xFF; 775409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli target_ulong mask; 776409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 777409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli tlb = &env->tlb->mmu.r4k.tlb[idx]; 778409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* The qemu TLB is flushed when the ASID changes, so no need to 779409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli flush these entries again. */ 780409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (tlb->G == 0 && tlb->ASID != ASID) { 781409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli return; 782409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 783409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli 784409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli /* 1k pages are not supported. */ 785409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli mask = tlb->PageMask | ~(TARGET_PAGE_MASK << 1); 786409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (tlb->V0) { 787409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr = tlb->VPN & ~mask; 788409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 789409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (addr >= (0xFFFFFFFF80000000ULL & env->SEGMask)) { 790409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr |= 0x3FFFFF0000000000ULL; 791409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 792409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 793409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli end = addr | (mask >> 1); 794409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli while (addr < end) { 795409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli tlb_flush_page (env, addr); 796409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr += TARGET_PAGE_SIZE; 797409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 798409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 799409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (tlb->V1) { 800409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr = (tlb->VPN & ~mask) | ((mask >> 1) + 1); 801409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#if defined(TARGET_MIPS64) 802409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli if (addr >= (0xFFFFFFFF80000000ULL & env->SEGMask)) { 803409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr |= 0x3FFFFF0000000000ULL; 804409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 805409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli#endif 806409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli end = addr | mask; 807409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli while (addr - 1 < end) { 808409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli tlb_flush_page (env, addr); 809409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli addr += TARGET_PAGE_SIZE; 810409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 811409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli } 812409c7b66435cf5947cab6bf0710f92507317f22eBhanu Chetlapalli} 813