David 'Digit' Turner | ebb1b24 | 2014-04-07 14:47:57 +0200 | [diff] [blame] | 1 | /* |
| 2 | * x86 condition code helpers |
| 3 | * |
| 4 | * Copyright (c) 2003 Fabrice Bellard |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library 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 GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include "cpu.h" |
| 22 | #include "helper.h" |
| 23 | |
| 24 | const uint8_t parity_table[256] = { |
| 25 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 26 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 27 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 28 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 29 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 30 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 31 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 32 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 33 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 34 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 35 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 36 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 37 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 38 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 39 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 40 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 41 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 42 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 43 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 44 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 45 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 46 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 47 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 48 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 49 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 50 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 51 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 52 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 53 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 54 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 55 | CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
| 56 | 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
| 57 | }; |
| 58 | |
| 59 | #define SHIFT 0 |
| 60 | #include "cc_helper_template.h" |
| 61 | #undef SHIFT |
| 62 | |
| 63 | #define SHIFT 1 |
| 64 | #include "cc_helper_template.h" |
| 65 | #undef SHIFT |
| 66 | |
| 67 | #define SHIFT 2 |
| 68 | #include "cc_helper_template.h" |
| 69 | #undef SHIFT |
| 70 | |
| 71 | #ifdef TARGET_X86_64 |
| 72 | #define SHIFT 3 |
| 73 | #include "cc_helper_template.h" |
| 74 | #undef SHIFT |
| 75 | #endif |
| 76 | |
| 77 | static int compute_all_eflags(CPUX86State *env) |
| 78 | { |
| 79 | return CC_SRC; |
| 80 | } |
| 81 | |
| 82 | static int compute_c_eflags(CPUX86State *env) |
| 83 | { |
| 84 | return CC_SRC & CC_C; |
| 85 | } |
| 86 | |
| 87 | uint32_t helper_cc_compute_all(CPUX86State *env, int op) |
| 88 | { |
| 89 | switch (op) { |
| 90 | default: /* should never happen */ return 0; |
| 91 | |
| 92 | case CC_OP_EFLAGS: return compute_all_eflags(env); |
| 93 | |
| 94 | case CC_OP_MULB: return compute_all_mulb(env); |
| 95 | case CC_OP_MULW: return compute_all_mulw(env); |
| 96 | case CC_OP_MULL: return compute_all_mull(env); |
| 97 | |
| 98 | case CC_OP_ADDB: return compute_all_addb(env); |
| 99 | case CC_OP_ADDW: return compute_all_addw(env); |
| 100 | case CC_OP_ADDL: return compute_all_addl(env); |
| 101 | |
| 102 | case CC_OP_ADCB: return compute_all_adcb(env); |
| 103 | case CC_OP_ADCW: return compute_all_adcw(env); |
| 104 | case CC_OP_ADCL: return compute_all_adcl(env); |
| 105 | |
| 106 | case CC_OP_SUBB: return compute_all_subb(env); |
| 107 | case CC_OP_SUBW: return compute_all_subw(env); |
| 108 | case CC_OP_SUBL: return compute_all_subl(env); |
| 109 | |
| 110 | case CC_OP_SBBB: return compute_all_sbbb(env); |
| 111 | case CC_OP_SBBW: return compute_all_sbbw(env); |
| 112 | case CC_OP_SBBL: return compute_all_sbbl(env); |
| 113 | |
| 114 | case CC_OP_LOGICB: return compute_all_logicb(env); |
| 115 | case CC_OP_LOGICW: return compute_all_logicw(env); |
| 116 | case CC_OP_LOGICL: return compute_all_logicl(env); |
| 117 | |
| 118 | case CC_OP_INCB: return compute_all_incb(env); |
| 119 | case CC_OP_INCW: return compute_all_incw(env); |
| 120 | case CC_OP_INCL: return compute_all_incl(env); |
| 121 | |
| 122 | case CC_OP_DECB: return compute_all_decb(env); |
| 123 | case CC_OP_DECW: return compute_all_decw(env); |
| 124 | case CC_OP_DECL: return compute_all_decl(env); |
| 125 | |
| 126 | case CC_OP_SHLB: return compute_all_shlb(env); |
| 127 | case CC_OP_SHLW: return compute_all_shlw(env); |
| 128 | case CC_OP_SHLL: return compute_all_shll(env); |
| 129 | |
| 130 | case CC_OP_SARB: return compute_all_sarb(env); |
| 131 | case CC_OP_SARW: return compute_all_sarw(env); |
| 132 | case CC_OP_SARL: return compute_all_sarl(env); |
| 133 | |
| 134 | #ifdef TARGET_X86_64 |
| 135 | case CC_OP_MULQ: return compute_all_mulq(env); |
| 136 | |
| 137 | case CC_OP_ADDQ: return compute_all_addq(env); |
| 138 | |
| 139 | case CC_OP_ADCQ: return compute_all_adcq(env); |
| 140 | |
| 141 | case CC_OP_SUBQ: return compute_all_subq(env); |
| 142 | |
| 143 | case CC_OP_SBBQ: return compute_all_sbbq(env); |
| 144 | |
| 145 | case CC_OP_LOGICQ: return compute_all_logicq(env); |
| 146 | |
| 147 | case CC_OP_INCQ: return compute_all_incq(env); |
| 148 | |
| 149 | case CC_OP_DECQ: return compute_all_decq(env); |
| 150 | |
| 151 | case CC_OP_SHLQ: return compute_all_shlq(env); |
| 152 | |
| 153 | case CC_OP_SARQ: return compute_all_sarq(env); |
| 154 | #endif |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | uint32_t cpu_cc_compute_all(CPUArchState *env1, int op) |
| 159 | { |
| 160 | return helper_cc_compute_all(env1, op); |
| 161 | } |
| 162 | |
| 163 | uint32_t helper_cc_compute_c(CPUX86State *env, int op) |
| 164 | { |
| 165 | switch (op) { |
| 166 | default: /* should never happen */ return 0; |
| 167 | |
| 168 | case CC_OP_EFLAGS: return compute_c_eflags(env); |
| 169 | |
| 170 | case CC_OP_MULB: return compute_c_mull(env); |
| 171 | case CC_OP_MULW: return compute_c_mull(env); |
| 172 | case CC_OP_MULL: return compute_c_mull(env); |
| 173 | |
| 174 | case CC_OP_ADDB: return compute_c_addb(env); |
| 175 | case CC_OP_ADDW: return compute_c_addw(env); |
| 176 | case CC_OP_ADDL: return compute_c_addl(env); |
| 177 | |
| 178 | case CC_OP_ADCB: return compute_c_adcb(env); |
| 179 | case CC_OP_ADCW: return compute_c_adcw(env); |
| 180 | case CC_OP_ADCL: return compute_c_adcl(env); |
| 181 | |
| 182 | case CC_OP_SUBB: return compute_c_subb(env); |
| 183 | case CC_OP_SUBW: return compute_c_subw(env); |
| 184 | case CC_OP_SUBL: return compute_c_subl(env); |
| 185 | |
| 186 | case CC_OP_SBBB: return compute_c_sbbb(env); |
| 187 | case CC_OP_SBBW: return compute_c_sbbw(env); |
| 188 | case CC_OP_SBBL: return compute_c_sbbl(env); |
| 189 | |
| 190 | case CC_OP_LOGICB: return compute_c_logicb(env); |
| 191 | case CC_OP_LOGICW: return compute_c_logicw(env); |
| 192 | case CC_OP_LOGICL: return compute_c_logicl(env); |
| 193 | |
| 194 | case CC_OP_INCB: return compute_c_incl(env); |
| 195 | case CC_OP_INCW: return compute_c_incl(env); |
| 196 | case CC_OP_INCL: return compute_c_incl(env); |
| 197 | |
| 198 | case CC_OP_DECB: return compute_c_incl(env); |
| 199 | case CC_OP_DECW: return compute_c_incl(env); |
| 200 | case CC_OP_DECL: return compute_c_incl(env); |
| 201 | |
| 202 | case CC_OP_SHLB: return compute_c_shlb(env); |
| 203 | case CC_OP_SHLW: return compute_c_shlw(env); |
| 204 | case CC_OP_SHLL: return compute_c_shll(env); |
| 205 | |
| 206 | case CC_OP_SARB: return compute_c_sarl(env); |
| 207 | case CC_OP_SARW: return compute_c_sarl(env); |
| 208 | case CC_OP_SARL: return compute_c_sarl(env); |
| 209 | |
| 210 | #ifdef TARGET_X86_64 |
| 211 | case CC_OP_MULQ: return compute_c_mull(env); |
| 212 | |
| 213 | case CC_OP_ADDQ: return compute_c_addq(env); |
| 214 | |
| 215 | case CC_OP_ADCQ: return compute_c_adcq(env); |
| 216 | |
| 217 | case CC_OP_SUBQ: return compute_c_subq(env); |
| 218 | |
| 219 | case CC_OP_SBBQ: return compute_c_sbbq(env); |
| 220 | |
| 221 | case CC_OP_LOGICQ: return compute_c_logicq(env); |
| 222 | |
| 223 | case CC_OP_INCQ: return compute_c_incl(env); |
| 224 | |
| 225 | case CC_OP_DECQ: return compute_c_incl(env); |
| 226 | |
| 227 | case CC_OP_SHLQ: return compute_c_shlq(env); |
| 228 | |
| 229 | case CC_OP_SARQ: return compute_c_sarl(env); |
| 230 | #endif |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | void helper_write_eflags(CPUX86State *env, |
| 235 | target_ulong t0, uint32_t update_mask) |
| 236 | { |
| 237 | cpu_load_eflags(env, t0, update_mask); |
| 238 | } |
| 239 | |
| 240 | target_ulong helper_read_eflags(CPUX86State *env) |
| 241 | { |
| 242 | uint32_t eflags; |
| 243 | eflags = helper_cc_compute_all(env, CC_OP); |
| 244 | eflags |= (DF & DF_MASK); |
| 245 | eflags |= env->eflags & ~(VM_MASK | RF_MASK); |
| 246 | return eflags; |
| 247 | } |
| 248 | |
| 249 | void helper_clts(CPUX86State *env) |
| 250 | { |
| 251 | env->cr[0] &= ~CR0_TS_MASK; |
| 252 | env->hflags &= ~HF_TS_MASK; |
| 253 | } |
| 254 | |
| 255 | void helper_reset_rf(CPUX86State *env) |
| 256 | { |
| 257 | env->eflags &= ~RF_MASK; |
| 258 | } |
| 259 | |
| 260 | void helper_cli(CPUX86State *env) |
| 261 | { |
| 262 | env->eflags &= ~IF_MASK; |
| 263 | } |
| 264 | |
| 265 | void helper_sti(CPUX86State *env) |
| 266 | { |
| 267 | env->eflags |= IF_MASK; |
| 268 | } |
| 269 | |
| 270 | void helper_set_inhibit_irq(CPUX86State *env) |
| 271 | { |
| 272 | env->hflags |= HF_INHIBIT_IRQ_MASK; |
| 273 | } |
| 274 | |
| 275 | void helper_reset_inhibit_irq(CPUX86State *env) |
| 276 | { |
| 277 | env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
| 278 | } |