| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - exception.c * |
| 3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
| 4 | * Copyright (C) 2002 Hacktarux * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the * |
| 18 | * Free Software Foundation, Inc., * |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 20 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 21 | |
| 22 | #include "api/m64p_types.h" |
| 23 | #include "api/callbacks.h" |
| 24 | #include "memory/memory.h" |
| 25 | |
| 26 | #include "exception.h" |
| 27 | #include "r4300.h" |
| 28 | #include "macros.h" |
| 29 | #include "recomph.h" |
| 30 | |
| 31 | void TLB_refill_exception(unsigned int address, int w) |
| 32 | { |
| 33 | int usual_handler = 0, i; |
| 34 | |
| 35 | if (r4300emu != CORE_DYNAREC && w != 2) update_count(); |
| 36 | if (w == 1) Cause = (3 << 2); |
| 37 | else Cause = (2 << 2); |
| 38 | BadVAddr = address; |
| 39 | Context = (Context & 0xFF80000F) | ((address >> 9) & 0x007FFFF0); |
| 40 | EntryHi = address & 0xFFFFE000; |
| 41 | if (Status & 0x2) // Test de EXL |
| 42 | { |
| 43 | generic_jump_to(0x80000180); |
| 44 | if(delay_slot==1 || delay_slot==3) Cause |= 0x80000000; |
| 45 | else Cause &= 0x7FFFFFFF; |
| 46 | } |
| 47 | else |
| 48 | { |
| 49 | if (r4300emu != CORE_PURE_INTERPRETER) |
| 50 | { |
| 51 | if (w!=2) |
| 52 | EPC = PC->addr; |
| 53 | else |
| 54 | EPC = address; |
| 55 | } |
| 56 | else EPC = PC->addr; |
| 57 | |
| 58 | Cause &= ~0x80000000; |
| 59 | Status |= 0x2; //EXL=1 |
| 60 | |
| 61 | if (address >= 0x80000000 && address < 0xc0000000) |
| 62 | usual_handler = 1; |
| 63 | for (i=0; i<32; i++) |
| 64 | { |
| 65 | if (/*tlb_e[i].v_even &&*/ address >= tlb_e[i].start_even && |
| 66 | address <= tlb_e[i].end_even) |
| 67 | usual_handler = 1; |
| 68 | if (/*tlb_e[i].v_odd &&*/ address >= tlb_e[i].start_odd && |
| 69 | address <= tlb_e[i].end_odd) |
| 70 | usual_handler = 1; |
| 71 | } |
| 72 | if (usual_handler) |
| 73 | { |
| 74 | generic_jump_to(0x80000180); |
| 75 | } |
| 76 | else |
| 77 | { |
| 78 | generic_jump_to(0x80000000); |
| 79 | } |
| 80 | } |
| 81 | if(delay_slot==1 || delay_slot==3) |
| 82 | { |
| 83 | Cause |= 0x80000000; |
| 84 | EPC-=4; |
| 85 | } |
| 86 | else |
| 87 | { |
| 88 | Cause &= 0x7FFFFFFF; |
| 89 | } |
| 90 | if(w != 2) EPC-=4; |
| 91 | |
| 92 | last_addr = PC->addr; |
| 93 | |
| 94 | if (r4300emu == CORE_DYNAREC) |
| 95 | { |
| 96 | dyna_jump(); |
| 97 | if (!dyna_interp) delay_slot = 0; |
| 98 | } |
| 99 | |
| 100 | if (r4300emu != CORE_DYNAREC || dyna_interp) |
| 101 | { |
| 102 | dyna_interp = 0; |
| 103 | if (delay_slot) |
| 104 | { |
| 105 | skip_jump = PC->addr; |
| 106 | next_interupt = 0; |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | void exception_general(void) |
| 112 | { |
| 113 | update_count(); |
| 114 | Status |= 2; |
| 115 | |
| 116 | EPC = PC->addr; |
| 117 | |
| 118 | if(delay_slot==1 || delay_slot==3) |
| 119 | { |
| 120 | Cause |= 0x80000000; |
| 121 | EPC-=4; |
| 122 | } |
| 123 | else |
| 124 | { |
| 125 | Cause &= 0x7FFFFFFF; |
| 126 | } |
| 127 | generic_jump_to(0x80000180); |
| 128 | last_addr = PC->addr; |
| 129 | if (r4300emu == CORE_DYNAREC) |
| 130 | { |
| 131 | dyna_jump(); |
| 132 | if (!dyna_interp) delay_slot = 0; |
| 133 | } |
| 134 | if (r4300emu != CORE_DYNAREC || dyna_interp) |
| 135 | { |
| 136 | dyna_interp = 0; |
| 137 | if (delay_slot) |
| 138 | { |
| 139 | skip_jump = PC->addr; |
| 140 | next_interupt = 0; |
| 141 | } |
| 142 | } |
| 143 | } |
| 144 | |