451ab91e |
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 | |