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1 | 6af0bf9c | bellard | /*
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2 | 6af0bf9c | bellard | * MIPS emulation helpers for qemu.
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3 | 6af0bf9c | bellard | *
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4 | 6af0bf9c | bellard | * Copyright (c) 2004-2005 Jocelyn Mayer
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5 | 6af0bf9c | bellard | *
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6 | 6af0bf9c | bellard | * This library is free software; you can redistribute it and/or
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7 | 6af0bf9c | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | 6af0bf9c | bellard | * License as published by the Free Software Foundation; either
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9 | 6af0bf9c | bellard | * version 2 of the License, or (at your option) any later version.
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10 | 6af0bf9c | bellard | *
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11 | 6af0bf9c | bellard | * This library is distributed in the hope that it will be useful,
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12 | 6af0bf9c | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 6af0bf9c | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 6af0bf9c | bellard | * Lesser General Public License for more details.
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15 | 6af0bf9c | bellard | *
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16 | 6af0bf9c | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | 6af0bf9c | bellard | * License along with this library; if not, write to the Free Software
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18 | 6af0bf9c | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | 6af0bf9c | bellard | */
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20 | 6af0bf9c | bellard | #include <math.h> |
21 | 6af0bf9c | bellard | #include "exec.h" |
22 | 6af0bf9c | bellard | |
23 | 6af0bf9c | bellard | #define MIPS_DEBUG_DISAS
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24 | 6af0bf9c | bellard | |
25 | 6af0bf9c | bellard | /*****************************************************************************/
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26 | 6af0bf9c | bellard | /* Exceptions processing helpers */
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27 | 6af0bf9c | bellard | void cpu_loop_exit(void) |
28 | 6af0bf9c | bellard | { |
29 | 6af0bf9c | bellard | longjmp(env->jmp_env, 1);
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30 | 6af0bf9c | bellard | } |
31 | 6af0bf9c | bellard | |
32 | 6af0bf9c | bellard | __attribute__ (( regparm(2) ))
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33 | 6af0bf9c | bellard | void do_raise_exception_err (uint32_t exception, int error_code) |
34 | 6af0bf9c | bellard | { |
35 | 6af0bf9c | bellard | #if 1 |
36 | 6af0bf9c | bellard | if (logfile && exception < 0x100) |
37 | 6af0bf9c | bellard | fprintf(logfile, "%s: %d %d\n", __func__, exception, error_code);
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38 | 6af0bf9c | bellard | #endif
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39 | 6af0bf9c | bellard | env->exception_index = exception; |
40 | 6af0bf9c | bellard | env->error_code = error_code; |
41 | 6af0bf9c | bellard | T0 = 0;
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42 | 6af0bf9c | bellard | cpu_loop_exit(); |
43 | 6af0bf9c | bellard | } |
44 | 6af0bf9c | bellard | |
45 | 6af0bf9c | bellard | __attribute__ (( regparm(1) ))
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46 | 6af0bf9c | bellard | void do_raise_exception (uint32_t exception)
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47 | 6af0bf9c | bellard | { |
48 | 6af0bf9c | bellard | do_raise_exception_err(exception, 0);
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49 | 6af0bf9c | bellard | } |
50 | 6af0bf9c | bellard | |
51 | 6af0bf9c | bellard | #define MEMSUFFIX _raw
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52 | 6af0bf9c | bellard | #include "op_helper_mem.c" |
53 | 6af0bf9c | bellard | #undef MEMSUFFIX
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54 | 6af0bf9c | bellard | #if !defined(CONFIG_USER_ONLY)
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55 | 6af0bf9c | bellard | #define MEMSUFFIX _user
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56 | 6af0bf9c | bellard | #include "op_helper_mem.c" |
57 | 6af0bf9c | bellard | #undef MEMSUFFIX
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58 | 6af0bf9c | bellard | #define MEMSUFFIX _kernel
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59 | 6af0bf9c | bellard | #include "op_helper_mem.c" |
60 | 6af0bf9c | bellard | #undef MEMSUFFIX
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61 | 6af0bf9c | bellard | #endif
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62 | 6af0bf9c | bellard | |
63 | 6af0bf9c | bellard | /* 64 bits arithmetic for 32 bits hosts */
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64 | 6af0bf9c | bellard | #if (HOST_LONG_BITS == 32) |
65 | 6af0bf9c | bellard | static inline uint64_t get_HILO (void) |
66 | 6af0bf9c | bellard | { |
67 | 6af0bf9c | bellard | return ((uint64_t)env->HI << 32) | (uint64_t)env->LO; |
68 | 6af0bf9c | bellard | } |
69 | 6af0bf9c | bellard | |
70 | 6af0bf9c | bellard | static inline void set_HILO (uint64_t HILO) |
71 | 6af0bf9c | bellard | { |
72 | 6af0bf9c | bellard | env->LO = HILO & 0xFFFFFFFF;
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73 | 6af0bf9c | bellard | env->HI = HILO >> 32;
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74 | 6af0bf9c | bellard | } |
75 | 6af0bf9c | bellard | |
76 | 6af0bf9c | bellard | void do_mult (void) |
77 | 6af0bf9c | bellard | { |
78 | 6af0bf9c | bellard | set_HILO((int64_t)T0 * (int64_t)T1); |
79 | 6af0bf9c | bellard | } |
80 | 6af0bf9c | bellard | |
81 | 6af0bf9c | bellard | void do_multu (void) |
82 | 6af0bf9c | bellard | { |
83 | 6af0bf9c | bellard | set_HILO((uint64_t)T0 * (uint64_t)T1); |
84 | 6af0bf9c | bellard | } |
85 | 6af0bf9c | bellard | |
86 | 6af0bf9c | bellard | void do_madd (void) |
87 | 6af0bf9c | bellard | { |
88 | 6af0bf9c | bellard | int64_t tmp; |
89 | 6af0bf9c | bellard | |
90 | 6af0bf9c | bellard | tmp = ((int64_t)T0 * (int64_t)T1); |
91 | 6af0bf9c | bellard | set_HILO((int64_t)get_HILO() + tmp); |
92 | 6af0bf9c | bellard | } |
93 | 6af0bf9c | bellard | |
94 | 6af0bf9c | bellard | void do_maddu (void) |
95 | 6af0bf9c | bellard | { |
96 | 6af0bf9c | bellard | uint64_t tmp; |
97 | 6af0bf9c | bellard | |
98 | 6af0bf9c | bellard | tmp = ((uint64_t)T0 * (uint64_t)T1); |
99 | 6af0bf9c | bellard | set_HILO(get_HILO() + tmp); |
100 | 6af0bf9c | bellard | } |
101 | 6af0bf9c | bellard | |
102 | 6af0bf9c | bellard | void do_msub (void) |
103 | 6af0bf9c | bellard | { |
104 | 6af0bf9c | bellard | int64_t tmp; |
105 | 6af0bf9c | bellard | |
106 | 6af0bf9c | bellard | tmp = ((int64_t)T0 * (int64_t)T1); |
107 | 6af0bf9c | bellard | set_HILO((int64_t)get_HILO() - tmp); |
108 | 6af0bf9c | bellard | } |
109 | 6af0bf9c | bellard | |
110 | 6af0bf9c | bellard | void do_msubu (void) |
111 | 6af0bf9c | bellard | { |
112 | 6af0bf9c | bellard | uint64_t tmp; |
113 | 6af0bf9c | bellard | |
114 | 6af0bf9c | bellard | tmp = ((uint64_t)T0 * (uint64_t)T1); |
115 | 6af0bf9c | bellard | set_HILO(get_HILO() - tmp); |
116 | 6af0bf9c | bellard | } |
117 | 6af0bf9c | bellard | #endif
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118 | 6af0bf9c | bellard | |
119 | 6af0bf9c | bellard | /* CP0 helpers */
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120 | 6af0bf9c | bellard | __attribute__ (( regparm(2) ))
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121 | 6af0bf9c | bellard | void do_mfc0 (int reg, int sel) |
122 | 6af0bf9c | bellard | { |
123 | 6af0bf9c | bellard | const unsigned char *rn; |
124 | 6af0bf9c | bellard | |
125 | 6af0bf9c | bellard | if (sel != 0 && reg != 16 && reg != 28) { |
126 | 6af0bf9c | bellard | rn = "invalid";
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127 | 6af0bf9c | bellard | goto print;
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128 | 6af0bf9c | bellard | } |
129 | 6af0bf9c | bellard | switch (reg) {
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130 | 6af0bf9c | bellard | case 0: |
131 | 6af0bf9c | bellard | T0 = env->CP0_index; |
132 | 6af0bf9c | bellard | rn = "Index";
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133 | 6af0bf9c | bellard | break;
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134 | 6af0bf9c | bellard | case 1: |
135 | 6af0bf9c | bellard | T0 = cpu_mips_get_random(env); |
136 | 6af0bf9c | bellard | rn = "Random";
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137 | 6af0bf9c | bellard | break;
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138 | 6af0bf9c | bellard | case 2: |
139 | 6af0bf9c | bellard | T0 = env->CP0_EntryLo0; |
140 | 6af0bf9c | bellard | rn = "EntryLo0";
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141 | 6af0bf9c | bellard | break;
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142 | 6af0bf9c | bellard | case 3: |
143 | 6af0bf9c | bellard | T0 = env->CP0_EntryLo1; |
144 | 6af0bf9c | bellard | rn = "EntryLo1";
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145 | 6af0bf9c | bellard | break;
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146 | 6af0bf9c | bellard | case 4: |
147 | 6af0bf9c | bellard | T0 = env->CP0_Context; |
148 | 6af0bf9c | bellard | rn = "Context";
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149 | 6af0bf9c | bellard | break;
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150 | 6af0bf9c | bellard | case 5: |
151 | 6af0bf9c | bellard | T0 = env->CP0_PageMask; |
152 | 6af0bf9c | bellard | rn = "PageMask";
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153 | 6af0bf9c | bellard | break;
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154 | 6af0bf9c | bellard | case 6: |
155 | 6af0bf9c | bellard | T0 = env->CP0_Wired; |
156 | 6af0bf9c | bellard | rn = "Wired";
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157 | 6af0bf9c | bellard | break;
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158 | 6af0bf9c | bellard | case 8: |
159 | 6af0bf9c | bellard | T0 = env->CP0_BadVAddr; |
160 | 6af0bf9c | bellard | rn = "BadVaddr";
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161 | 6af0bf9c | bellard | break;
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162 | 6af0bf9c | bellard | case 9: |
163 | 6af0bf9c | bellard | T0 = cpu_mips_get_count(env); |
164 | 6af0bf9c | bellard | rn = "Count";
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165 | 6af0bf9c | bellard | break;
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166 | 6af0bf9c | bellard | case 10: |
167 | 6af0bf9c | bellard | T0 = env->CP0_EntryHi; |
168 | 6af0bf9c | bellard | rn = "EntryHi";
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169 | 6af0bf9c | bellard | break;
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170 | 6af0bf9c | bellard | case 11: |
171 | 6af0bf9c | bellard | T0 = env->CP0_Compare; |
172 | 6af0bf9c | bellard | rn = "Compare";
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173 | 6af0bf9c | bellard | break;
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174 | 6af0bf9c | bellard | case 12: |
175 | 6af0bf9c | bellard | T0 = env->CP0_Status; |
176 | 6af0bf9c | bellard | if (env->hflags & MIPS_HFLAG_UM)
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177 | 6af0bf9c | bellard | T0 |= CP0St_UM; |
178 | 6af0bf9c | bellard | if (env->hflags & MIPS_HFLAG_ERL)
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179 | 6af0bf9c | bellard | T0 |= CP0St_ERL; |
180 | 6af0bf9c | bellard | if (env->hflags & MIPS_HFLAG_EXL)
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181 | 6af0bf9c | bellard | T0 |= CP0St_EXL; |
182 | 6af0bf9c | bellard | rn = "Status";
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183 | 6af0bf9c | bellard | break;
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184 | 6af0bf9c | bellard | case 13: |
185 | 6af0bf9c | bellard | T0 = env->CP0_Cause; |
186 | 6af0bf9c | bellard | rn = "Cause";
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187 | 6af0bf9c | bellard | break;
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188 | 6af0bf9c | bellard | case 14: |
189 | 6af0bf9c | bellard | T0 = env->CP0_EPC; |
190 | 6af0bf9c | bellard | rn = "EPC";
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191 | 6af0bf9c | bellard | break;
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192 | 6af0bf9c | bellard | case 15: |
193 | 6af0bf9c | bellard | T0 = env->CP0_PRid; |
194 | 6af0bf9c | bellard | rn = "PRid";
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195 | 6af0bf9c | bellard | break;
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196 | 6af0bf9c | bellard | case 16: |
197 | 6af0bf9c | bellard | switch (sel) {
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198 | 6af0bf9c | bellard | case 0: |
199 | 6af0bf9c | bellard | T0 = env->CP0_Config0; |
200 | 6af0bf9c | bellard | rn = "Config";
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201 | 6af0bf9c | bellard | break;
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202 | 6af0bf9c | bellard | case 1: |
203 | 6af0bf9c | bellard | T0 = env->CP0_Config1; |
204 | 6af0bf9c | bellard | rn = "Config1";
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205 | 6af0bf9c | bellard | break;
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206 | 6af0bf9c | bellard | default:
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207 | 6af0bf9c | bellard | rn = "Unknown config register";
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208 | 6af0bf9c | bellard | break;
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209 | 6af0bf9c | bellard | } |
210 | 6af0bf9c | bellard | break;
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211 | 6af0bf9c | bellard | case 17: |
212 | 6af0bf9c | bellard | T0 = env->CP0_LLAddr >> 4;
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213 | 6af0bf9c | bellard | rn = "LLAddr";
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214 | 6af0bf9c | bellard | break;
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215 | 6af0bf9c | bellard | case 18: |
216 | 6af0bf9c | bellard | T0 = env->CP0_WatchLo; |
217 | 6af0bf9c | bellard | rn = "WatchLo";
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218 | 6af0bf9c | bellard | break;
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219 | 6af0bf9c | bellard | case 19: |
220 | 6af0bf9c | bellard | T0 = env->CP0_WatchHi; |
221 | 6af0bf9c | bellard | rn = "WatchHi";
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222 | 6af0bf9c | bellard | break;
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223 | 6af0bf9c | bellard | case 23: |
224 | 6af0bf9c | bellard | T0 = env->CP0_Debug; |
225 | 6af0bf9c | bellard | if (env->hflags & MIPS_HFLAG_DM)
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226 | 6af0bf9c | bellard | T0 |= 1 << CP0DB_DM;
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227 | 6af0bf9c | bellard | rn = "Debug";
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228 | 6af0bf9c | bellard | break;
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229 | 6af0bf9c | bellard | case 24: |
230 | 6af0bf9c | bellard | T0 = env->CP0_DEPC; |
231 | 6af0bf9c | bellard | rn = "DEPC";
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232 | 6af0bf9c | bellard | break;
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233 | 6af0bf9c | bellard | case 28: |
234 | 6af0bf9c | bellard | switch (sel) {
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235 | 6af0bf9c | bellard | case 0: |
236 | 6af0bf9c | bellard | T0 = env->CP0_TagLo; |
237 | 6af0bf9c | bellard | rn = "TagLo";
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238 | 6af0bf9c | bellard | break;
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239 | 6af0bf9c | bellard | case 1: |
240 | 6af0bf9c | bellard | T0 = env->CP0_DataLo; |
241 | 6af0bf9c | bellard | rn = "DataLo";
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242 | 6af0bf9c | bellard | break;
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243 | 6af0bf9c | bellard | default:
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244 | 6af0bf9c | bellard | rn = "unknown sel";
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245 | 6af0bf9c | bellard | break;
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246 | 6af0bf9c | bellard | } |
247 | 6af0bf9c | bellard | break;
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248 | 6af0bf9c | bellard | case 30: |
249 | 6af0bf9c | bellard | T0 = env->CP0_ErrorEPC; |
250 | 6af0bf9c | bellard | rn = "ErrorEPC";
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251 | 6af0bf9c | bellard | break;
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252 | 6af0bf9c | bellard | case 31: |
253 | 6af0bf9c | bellard | T0 = env->CP0_DESAVE; |
254 | 6af0bf9c | bellard | rn = "DESAVE";
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255 | 6af0bf9c | bellard | break;
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256 | 6af0bf9c | bellard | default:
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257 | 6af0bf9c | bellard | rn = "unknown";
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258 | 6af0bf9c | bellard | break;
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259 | 6af0bf9c | bellard | } |
260 | 6af0bf9c | bellard | print:
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261 | 6af0bf9c | bellard | #if defined MIPS_DEBUG_DISAS
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262 | 6af0bf9c | bellard | if (loglevel & CPU_LOG_TB_IN_ASM) {
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263 | 6af0bf9c | bellard | fprintf(logfile, "%08x mfc0 %s => %08x (%d %d)\n",
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264 | 6af0bf9c | bellard | env->PC, rn, T0, reg, sel); |
265 | 6af0bf9c | bellard | } |
266 | 6af0bf9c | bellard | #endif
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267 | 6af0bf9c | bellard | return;
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268 | 6af0bf9c | bellard | } |
269 | 6af0bf9c | bellard | |
270 | 6af0bf9c | bellard | __attribute__ (( regparm(2) ))
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271 | 6af0bf9c | bellard | void do_mtc0 (int reg, int sel) |
272 | 6af0bf9c | bellard | { |
273 | 6af0bf9c | bellard | const unsigned char *rn; |
274 | 6af0bf9c | bellard | uint32_t val, old, mask; |
275 | 6af0bf9c | bellard | int i, raise;
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276 | 6af0bf9c | bellard | |
277 | 6af0bf9c | bellard | if (sel != 0 && reg != 16 && reg != 28) { |
278 | 6af0bf9c | bellard | val = -1;
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279 | 6af0bf9c | bellard | old = -1;
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280 | 6af0bf9c | bellard | rn = "invalid";
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281 | 6af0bf9c | bellard | goto print;
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282 | 6af0bf9c | bellard | } |
283 | 6af0bf9c | bellard | switch (reg) {
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284 | 6af0bf9c | bellard | case 0: |
285 | 6af0bf9c | bellard | val = (env->CP0_index & 0x80000000) | (T0 & 0x0000000F); |
286 | 6af0bf9c | bellard | old = env->CP0_index; |
287 | 6af0bf9c | bellard | env->CP0_index = val; |
288 | 6af0bf9c | bellard | rn = "Index";
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289 | 6af0bf9c | bellard | break;
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290 | 6af0bf9c | bellard | case 2: |
291 | 6af0bf9c | bellard | val = T0 & 0x03FFFFFFF;
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292 | 6af0bf9c | bellard | old = env->CP0_EntryLo0; |
293 | 6af0bf9c | bellard | env->CP0_EntryLo0 = val; |
294 | 6af0bf9c | bellard | rn = "EntryLo0";
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295 | 6af0bf9c | bellard | break;
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296 | 6af0bf9c | bellard | case 3: |
297 | 6af0bf9c | bellard | val = T0 & 0x03FFFFFFF;
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298 | 6af0bf9c | bellard | old = env->CP0_EntryLo1; |
299 | 6af0bf9c | bellard | env->CP0_EntryLo1 = val; |
300 | 6af0bf9c | bellard | rn = "EntryLo1";
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301 | 6af0bf9c | bellard | break;
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302 | 6af0bf9c | bellard | case 4: |
303 | 6af0bf9c | bellard | val = (env->CP0_Context & 0xFF000000) | (T0 & 0x00FFFFF0); |
304 | 6af0bf9c | bellard | old = env->CP0_Context; |
305 | 6af0bf9c | bellard | env->CP0_Context = val; |
306 | 6af0bf9c | bellard | rn = "Context";
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307 | 6af0bf9c | bellard | break;
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308 | 6af0bf9c | bellard | case 5: |
309 | 6af0bf9c | bellard | val = T0 & 0x01FFE000;
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310 | 6af0bf9c | bellard | old = env->CP0_PageMask; |
311 | 6af0bf9c | bellard | env->CP0_PageMask = val; |
312 | 6af0bf9c | bellard | rn = "PageMask";
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313 | 6af0bf9c | bellard | break;
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314 | 6af0bf9c | bellard | case 6: |
315 | 6af0bf9c | bellard | val = T0 & 0x0000000F;
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316 | 6af0bf9c | bellard | old = env->CP0_Wired; |
317 | 6af0bf9c | bellard | env->CP0_Wired = val; |
318 | 6af0bf9c | bellard | rn = "Wired";
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319 | 6af0bf9c | bellard | break;
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320 | 6af0bf9c | bellard | case 9: |
321 | 6af0bf9c | bellard | val = T0; |
322 | 6af0bf9c | bellard | old = cpu_mips_get_count(env); |
323 | 6af0bf9c | bellard | cpu_mips_store_count(env, val); |
324 | 6af0bf9c | bellard | rn = "Count";
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325 | 6af0bf9c | bellard | break;
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326 | 6af0bf9c | bellard | case 10: |
327 | 6af0bf9c | bellard | val = T0 & 0xFFFFF0FF;
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328 | 6af0bf9c | bellard | old = env->CP0_EntryHi; |
329 | 6af0bf9c | bellard | env->CP0_EntryHi = val; |
330 | 6af0bf9c | bellard | rn = "EntryHi";
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331 | 6af0bf9c | bellard | break;
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332 | 6af0bf9c | bellard | case 11: |
333 | 6af0bf9c | bellard | val = T0; |
334 | 6af0bf9c | bellard | old = env->CP0_Compare; |
335 | 6af0bf9c | bellard | cpu_mips_store_compare(env, val); |
336 | 6af0bf9c | bellard | rn = "Compare";
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337 | 6af0bf9c | bellard | break;
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338 | 6af0bf9c | bellard | case 12: |
339 | 6af0bf9c | bellard | val = T0 & 0xFA78FF01;
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340 | 6af0bf9c | bellard | if (T0 & (1 << CP0St_UM)) |
341 | 6af0bf9c | bellard | env->hflags |= MIPS_HFLAG_UM; |
342 | 6af0bf9c | bellard | else
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343 | 6af0bf9c | bellard | env->hflags &= ~MIPS_HFLAG_UM; |
344 | 6af0bf9c | bellard | if (T0 & (1 << CP0St_ERL)) |
345 | 6af0bf9c | bellard | env->hflags |= MIPS_HFLAG_ERL; |
346 | 6af0bf9c | bellard | else
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347 | 6af0bf9c | bellard | env->hflags &= ~MIPS_HFLAG_ERL; |
348 | 6af0bf9c | bellard | if (T0 & (1 << CP0St_EXL)) |
349 | 6af0bf9c | bellard | env->hflags |= MIPS_HFLAG_EXL; |
350 | 6af0bf9c | bellard | else
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351 | 6af0bf9c | bellard | env->hflags &= ~MIPS_HFLAG_EXL; |
352 | 6af0bf9c | bellard | old = env->CP0_Status; |
353 | 6af0bf9c | bellard | env->CP0_Status = val; |
354 | 6af0bf9c | bellard | /* If we unmasked an asserted IRQ, raise it */
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355 | 6af0bf9c | bellard | mask = 0x0000FC00;
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356 | 6af0bf9c | bellard | if (loglevel & CPU_LOG_TB_IN_ASM) {
|
357 | 6af0bf9c | bellard | fprintf(logfile, "Status %08x => %08x Cause %08x (%08x %08x %08x)\n",
|
358 | 6af0bf9c | bellard | old, val, env->CP0_Cause, old & mask, val & mask, |
359 | 6af0bf9c | bellard | env->CP0_Cause & mask); |
360 | 6af0bf9c | bellard | } |
361 | 6af0bf9c | bellard | #if 1 |
362 | 6af0bf9c | bellard | if ((val & (1 << CP0St_IE)) && !(old & (1 << CP0St_IE)) && |
363 | 6af0bf9c | bellard | !(env->hflags & MIPS_HFLAG_EXL) && |
364 | 6af0bf9c | bellard | !(env->hflags & MIPS_HFLAG_ERL) && |
365 | 6af0bf9c | bellard | !(env->hflags & MIPS_HFLAG_DM) && |
366 | 6af0bf9c | bellard | (env->CP0_Cause & mask)) { |
367 | 6af0bf9c | bellard | if (logfile)
|
368 | 6af0bf9c | bellard | fprintf(logfile, "Raise pending IRQs\n");
|
369 | 6af0bf9c | bellard | env->interrupt_request |= CPU_INTERRUPT_HARD; |
370 | 6af0bf9c | bellard | do_raise_exception(EXCP_EXT_INTERRUPT); |
371 | 6af0bf9c | bellard | } else if (!(val & 0x00000001) && (old & 0x00000001)) { |
372 | 6af0bf9c | bellard | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
373 | 6af0bf9c | bellard | } |
374 | 6af0bf9c | bellard | #endif
|
375 | 6af0bf9c | bellard | rn = "Status";
|
376 | 6af0bf9c | bellard | break;
|
377 | 6af0bf9c | bellard | case 13: |
378 | 6af0bf9c | bellard | val = (env->CP0_Cause & 0xB000F87C) | (T0 & 0x000C00300); |
379 | 6af0bf9c | bellard | old = env->CP0_Cause; |
380 | 6af0bf9c | bellard | env->CP0_Cause = val; |
381 | 6af0bf9c | bellard | #if 0
|
382 | 6af0bf9c | bellard | /* Check if we ever asserted a software IRQ */
|
383 | 6af0bf9c | bellard | for (i = 0; i < 2; i++) {
|
384 | 6af0bf9c | bellard | mask = 0x100 << i;
|
385 | 6af0bf9c | bellard | if ((val & mask) & !(old & mask))
|
386 | 6af0bf9c | bellard | mips_set_irq(i);
|
387 | 6af0bf9c | bellard | }
|
388 | 6af0bf9c | bellard | #endif
|
389 | 6af0bf9c | bellard | rn = "Cause";
|
390 | 6af0bf9c | bellard | break;
|
391 | 6af0bf9c | bellard | case 14: |
392 | 6af0bf9c | bellard | val = T0; |
393 | 6af0bf9c | bellard | old = env->CP0_EPC; |
394 | 6af0bf9c | bellard | env->CP0_EPC = val; |
395 | 6af0bf9c | bellard | rn = "EPC";
|
396 | 6af0bf9c | bellard | break;
|
397 | 6af0bf9c | bellard | case 16: |
398 | 6af0bf9c | bellard | switch (sel) {
|
399 | 6af0bf9c | bellard | case 0: |
400 | 6af0bf9c | bellard | #if defined(MIPS_USES_R4K_TLB)
|
401 | 6af0bf9c | bellard | val = (env->CP0_Config0 & 0x8017FF80) | (T0 & 0x7E000001); |
402 | 6af0bf9c | bellard | #else
|
403 | 6af0bf9c | bellard | val = (env->CP0_Config0 & 0xFE17FF80) | (T0 & 0x00000001); |
404 | 6af0bf9c | bellard | #endif
|
405 | 6af0bf9c | bellard | old = env->CP0_Config0; |
406 | 6af0bf9c | bellard | env->CP0_Config0 = val; |
407 | 6af0bf9c | bellard | rn = "Config0";
|
408 | 6af0bf9c | bellard | break;
|
409 | 6af0bf9c | bellard | default:
|
410 | 6af0bf9c | bellard | val = -1;
|
411 | 6af0bf9c | bellard | old = -1;
|
412 | 6af0bf9c | bellard | rn = "bad config selector";
|
413 | 6af0bf9c | bellard | break;
|
414 | 6af0bf9c | bellard | } |
415 | 6af0bf9c | bellard | break;
|
416 | 6af0bf9c | bellard | case 18: |
417 | 6af0bf9c | bellard | val = T0; |
418 | 6af0bf9c | bellard | old = env->CP0_WatchLo; |
419 | 6af0bf9c | bellard | env->CP0_WatchLo = val; |
420 | 6af0bf9c | bellard | rn = "WatchLo";
|
421 | 6af0bf9c | bellard | break;
|
422 | 6af0bf9c | bellard | case 19: |
423 | 6af0bf9c | bellard | val = T0 & 0x40FF0FF8;
|
424 | 6af0bf9c | bellard | old = env->CP0_WatchHi; |
425 | 6af0bf9c | bellard | env->CP0_WatchHi = val; |
426 | 6af0bf9c | bellard | rn = "WatchHi";
|
427 | 6af0bf9c | bellard | break;
|
428 | 6af0bf9c | bellard | case 23: |
429 | 6af0bf9c | bellard | val = (env->CP0_Debug & 0x8C03FC1F) | (T0 & 0x13300120); |
430 | 6af0bf9c | bellard | if (T0 & (1 << CP0DB_DM)) |
431 | 6af0bf9c | bellard | env->hflags |= MIPS_HFLAG_DM; |
432 | 6af0bf9c | bellard | else
|
433 | 6af0bf9c | bellard | env->hflags &= ~MIPS_HFLAG_DM; |
434 | 6af0bf9c | bellard | old = env->CP0_Debug; |
435 | 6af0bf9c | bellard | env->CP0_Debug = val; |
436 | 6af0bf9c | bellard | rn = "Debug";
|
437 | 6af0bf9c | bellard | break;
|
438 | 6af0bf9c | bellard | case 24: |
439 | 6af0bf9c | bellard | val = T0; |
440 | 6af0bf9c | bellard | old = env->CP0_DEPC; |
441 | 6af0bf9c | bellard | env->CP0_DEPC = val; |
442 | 6af0bf9c | bellard | rn = "DEPC";
|
443 | 6af0bf9c | bellard | break;
|
444 | 6af0bf9c | bellard | case 28: |
445 | 6af0bf9c | bellard | switch (sel) {
|
446 | 6af0bf9c | bellard | case 0: |
447 | 6af0bf9c | bellard | val = T0 & 0xFFFFFCF6;
|
448 | 6af0bf9c | bellard | old = env->CP0_TagLo; |
449 | 6af0bf9c | bellard | env->CP0_TagLo = val; |
450 | 6af0bf9c | bellard | rn = "TagLo";
|
451 | 6af0bf9c | bellard | break;
|
452 | 6af0bf9c | bellard | default:
|
453 | 6af0bf9c | bellard | val = -1;
|
454 | 6af0bf9c | bellard | old = -1;
|
455 | 6af0bf9c | bellard | rn = "invalid sel";
|
456 | 6af0bf9c | bellard | break;
|
457 | 6af0bf9c | bellard | } |
458 | 6af0bf9c | bellard | break;
|
459 | 6af0bf9c | bellard | case 30: |
460 | 6af0bf9c | bellard | val = T0; |
461 | 6af0bf9c | bellard | old = env->CP0_ErrorEPC; |
462 | 6af0bf9c | bellard | env->CP0_ErrorEPC = val; |
463 | 6af0bf9c | bellard | rn = "EPC";
|
464 | 6af0bf9c | bellard | break;
|
465 | 6af0bf9c | bellard | case 31: |
466 | 6af0bf9c | bellard | val = T0; |
467 | 6af0bf9c | bellard | old = env->CP0_DESAVE; |
468 | 6af0bf9c | bellard | env->CP0_DESAVE = val; |
469 | 6af0bf9c | bellard | rn = "DESAVE";
|
470 | 6af0bf9c | bellard | break;
|
471 | 6af0bf9c | bellard | default:
|
472 | 6af0bf9c | bellard | val = -1;
|
473 | 6af0bf9c | bellard | old = -1;
|
474 | 6af0bf9c | bellard | rn = "unknown";
|
475 | 6af0bf9c | bellard | break;
|
476 | 6af0bf9c | bellard | } |
477 | 6af0bf9c | bellard | print:
|
478 | 6af0bf9c | bellard | #if defined MIPS_DEBUG_DISAS
|
479 | 6af0bf9c | bellard | if (loglevel & CPU_LOG_TB_IN_ASM) {
|
480 | 6af0bf9c | bellard | fprintf(logfile, "%08x mtc0 %s %08x => %08x (%d %d %08x)\n",
|
481 | 6af0bf9c | bellard | env->PC, rn, T0, val, reg, sel, old); |
482 | 6af0bf9c | bellard | } |
483 | 6af0bf9c | bellard | #endif
|
484 | 6af0bf9c | bellard | return;
|
485 | 6af0bf9c | bellard | } |
486 | 6af0bf9c | bellard | |
487 | 6af0bf9c | bellard | /* TLB management */
|
488 | 6af0bf9c | bellard | #if defined(MIPS_USES_R4K_TLB)
|
489 | 6af0bf9c | bellard | __attribute__ (( regparm(1) ))
|
490 | 6af0bf9c | bellard | static void invalidate_tb (int idx) |
491 | 6af0bf9c | bellard | { |
492 | 6af0bf9c | bellard | tlb_t *tlb; |
493 | 6af0bf9c | bellard | target_ulong addr, end; |
494 | 6af0bf9c | bellard | |
495 | 6af0bf9c | bellard | tlb = &env->tlb[idx]; |
496 | 6af0bf9c | bellard | if (tlb->V[0]) { |
497 | 6af0bf9c | bellard | addr = tlb->PFN[0];
|
498 | 6af0bf9c | bellard | end = addr + (tlb->end - tlb->VPN); |
499 | 6af0bf9c | bellard | tb_invalidate_page_range(addr, end); |
500 | 6af0bf9c | bellard | } |
501 | 6af0bf9c | bellard | if (tlb->V[1]) { |
502 | 6af0bf9c | bellard | addr = tlb->PFN[1];
|
503 | 6af0bf9c | bellard | end = addr + (tlb->end - tlb->VPN); |
504 | 6af0bf9c | bellard | tb_invalidate_page_range(addr, end); |
505 | 6af0bf9c | bellard | } |
506 | 6af0bf9c | bellard | } |
507 | 6af0bf9c | bellard | |
508 | 6af0bf9c | bellard | __attribute__ (( regparm(1) ))
|
509 | 6af0bf9c | bellard | static void fill_tb (int idx) |
510 | 6af0bf9c | bellard | { |
511 | 6af0bf9c | bellard | tlb_t *tlb; |
512 | 6af0bf9c | bellard | int size;
|
513 | 6af0bf9c | bellard | |
514 | 6af0bf9c | bellard | /* XXX: detect conflicting TLBs and raise a MCHECK exception when needed */
|
515 | 6af0bf9c | bellard | tlb = &env->tlb[idx]; |
516 | 6af0bf9c | bellard | tlb->VPN = env->CP0_EntryHi & 0xFFFFE000;
|
517 | 6af0bf9c | bellard | tlb->ASID = env->CP0_EntryHi & 0x000000FF;
|
518 | 6af0bf9c | bellard | size = env->CP0_PageMask >> 13;
|
519 | 6af0bf9c | bellard | size = 4 * (size + 1); |
520 | 6af0bf9c | bellard | tlb->end = tlb->VPN + (1 << (8 + size)); |
521 | 6af0bf9c | bellard | tlb->G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
|
522 | 6af0bf9c | bellard | tlb->V[0] = env->CP0_EntryLo0 & 2; |
523 | 6af0bf9c | bellard | tlb->D[0] = env->CP0_EntryLo0 & 4; |
524 | 6af0bf9c | bellard | tlb->C[0] = (env->CP0_EntryLo0 >> 3) & 0x7; |
525 | 6af0bf9c | bellard | tlb->PFN[0] = (env->CP0_EntryLo0 >> 6) << 12; |
526 | 6af0bf9c | bellard | tlb->V[1] = env->CP0_EntryLo1 & 2; |
527 | 6af0bf9c | bellard | tlb->D[1] = env->CP0_EntryLo1 & 4; |
528 | 6af0bf9c | bellard | tlb->C[1] = (env->CP0_EntryLo1 >> 3) & 0x7; |
529 | 6af0bf9c | bellard | tlb->PFN[1] = (env->CP0_EntryLo1 >> 6) << 12; |
530 | 6af0bf9c | bellard | } |
531 | 6af0bf9c | bellard | |
532 | 6af0bf9c | bellard | void do_tlbwi (void) |
533 | 6af0bf9c | bellard | { |
534 | 6af0bf9c | bellard | invalidate_tb(env->CP0_index & 0xF);
|
535 | 6af0bf9c | bellard | fill_tb(env->CP0_index & 0xF);
|
536 | 6af0bf9c | bellard | } |
537 | 6af0bf9c | bellard | |
538 | 6af0bf9c | bellard | void do_tlbwr (void) |
539 | 6af0bf9c | bellard | { |
540 | 6af0bf9c | bellard | int r = cpu_mips_get_random(env);
|
541 | 6af0bf9c | bellard | |
542 | 6af0bf9c | bellard | invalidate_tb(r); |
543 | 6af0bf9c | bellard | fill_tb(r); |
544 | 6af0bf9c | bellard | } |
545 | 6af0bf9c | bellard | |
546 | 6af0bf9c | bellard | void do_tlbp (void) |
547 | 6af0bf9c | bellard | { |
548 | 6af0bf9c | bellard | tlb_t *tlb; |
549 | 6af0bf9c | bellard | target_ulong tag; |
550 | 6af0bf9c | bellard | uint8_t ASID; |
551 | 6af0bf9c | bellard | int i;
|
552 | 6af0bf9c | bellard | |
553 | 6af0bf9c | bellard | tag = (env->CP0_EntryHi & 0xFFFFE000);
|
554 | 6af0bf9c | bellard | ASID = env->CP0_EntryHi & 0x000000FF;
|
555 | 6af0bf9c | bellard | for (i = 0; i < 16; i++) { |
556 | 6af0bf9c | bellard | tlb = &env->tlb[i]; |
557 | 6af0bf9c | bellard | /* Check ASID, virtual page number & size */
|
558 | 6af0bf9c | bellard | if ((tlb->G == 1 || tlb->ASID == ASID) && tlb->VPN == tag) { |
559 | 6af0bf9c | bellard | /* TLB match */
|
560 | 6af0bf9c | bellard | env->CP0_index = i; |
561 | 6af0bf9c | bellard | break;
|
562 | 6af0bf9c | bellard | } |
563 | 6af0bf9c | bellard | } |
564 | 6af0bf9c | bellard | if (i == 16) { |
565 | 6af0bf9c | bellard | env->CP0_index |= 0x80000000;
|
566 | 6af0bf9c | bellard | } |
567 | 6af0bf9c | bellard | } |
568 | 6af0bf9c | bellard | |
569 | 6af0bf9c | bellard | void do_tlbr (void) |
570 | 6af0bf9c | bellard | { |
571 | 6af0bf9c | bellard | tlb_t *tlb; |
572 | 6af0bf9c | bellard | int size;
|
573 | 6af0bf9c | bellard | |
574 | 6af0bf9c | bellard | tlb = &env->tlb[env->CP0_index & 0xF];
|
575 | 6af0bf9c | bellard | env->CP0_EntryHi = tlb->VPN | tlb->ASID; |
576 | 6af0bf9c | bellard | size = (tlb->end - tlb->VPN) >> 12;
|
577 | 6af0bf9c | bellard | env->CP0_PageMask = (size - 1) << 13; |
578 | 6af0bf9c | bellard | env->CP0_EntryLo0 = tlb->V[0] | tlb->D[0] | (tlb->C[0] << 3) | |
579 | 6af0bf9c | bellard | (tlb->PFN[0] >> 6); |
580 | 6af0bf9c | bellard | env->CP0_EntryLo1 = tlb->V[1] | tlb->D[1] | (tlb->C[1] << 3) | |
581 | 6af0bf9c | bellard | (tlb->PFN[1] >> 6); |
582 | 6af0bf9c | bellard | } |
583 | 6af0bf9c | bellard | #endif
|
584 | 6af0bf9c | bellard | |
585 | 6af0bf9c | bellard | __attribute__ (( regparm(1) ))
|
586 | 6af0bf9c | bellard | void op_dump_ldst (const unsigned char *func) |
587 | 6af0bf9c | bellard | { |
588 | 6af0bf9c | bellard | if (loglevel)
|
589 | 6af0bf9c | bellard | fprintf(logfile, "%s => %08x %08x\n", __func__, T0, T1);
|
590 | 6af0bf9c | bellard | } |
591 | 6af0bf9c | bellard | |
592 | 6af0bf9c | bellard | void dump_sc (void) |
593 | 6af0bf9c | bellard | { |
594 | 6af0bf9c | bellard | if (loglevel) {
|
595 | 6af0bf9c | bellard | fprintf(logfile, "%s %08x at %08x (%08x)\n", __func__,
|
596 | 6af0bf9c | bellard | T1, T0, env->CP0_LLAddr); |
597 | 6af0bf9c | bellard | } |
598 | 6af0bf9c | bellard | } |
599 | 6af0bf9c | bellard | |
600 | 6af0bf9c | bellard | void debug_eret (void) |
601 | 6af0bf9c | bellard | { |
602 | 6af0bf9c | bellard | if (loglevel) {
|
603 | 6af0bf9c | bellard | fprintf(logfile, "ERET: pc %08x EPC %08x ErrorEPC %08x (%d)\n",
|
604 | 6af0bf9c | bellard | env->PC, env->CP0_EPC, env->CP0_ErrorEPC, |
605 | 6af0bf9c | bellard | env->hflags & MIPS_HFLAG_ERL ? 1 : 0); |
606 | 6af0bf9c | bellard | } |
607 | 6af0bf9c | bellard | } |
608 | 6af0bf9c | bellard | |
609 | 6af0bf9c | bellard | __attribute__ (( regparm(1) ))
|
610 | 6af0bf9c | bellard | void do_pmon (int function) |
611 | 6af0bf9c | bellard | { |
612 | 6af0bf9c | bellard | function /= 2;
|
613 | 6af0bf9c | bellard | switch (function) {
|
614 | 6af0bf9c | bellard | case 2: /* TODO: char inbyte(int waitflag); */ |
615 | 6af0bf9c | bellard | if (env->gpr[4] == 0) |
616 | 6af0bf9c | bellard | env->gpr[2] = -1; |
617 | 6af0bf9c | bellard | /* Fall through */
|
618 | 6af0bf9c | bellard | case 11: /* TODO: char inbyte (void); */ |
619 | 6af0bf9c | bellard | env->gpr[2] = -1; |
620 | 6af0bf9c | bellard | break;
|
621 | 6af0bf9c | bellard | case 3: |
622 | 6af0bf9c | bellard | case 12: |
623 | 6af0bf9c | bellard | printf("%c", env->gpr[4] & 0xFF); |
624 | 6af0bf9c | bellard | break;
|
625 | 6af0bf9c | bellard | case 17: |
626 | 6af0bf9c | bellard | break;
|
627 | 6af0bf9c | bellard | case 158: |
628 | 6af0bf9c | bellard | { |
629 | 6af0bf9c | bellard | unsigned char *fmt = (void *)env->gpr[4]; |
630 | 6af0bf9c | bellard | printf("%s", fmt);
|
631 | 6af0bf9c | bellard | } |
632 | 6af0bf9c | bellard | break;
|
633 | 6af0bf9c | bellard | } |
634 | 6af0bf9c | bellard | } |