The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * ARM helper routines |
| 3 | * |
| 4 | * Copyright (c) 2005-2007 CodeSourcery, LLC |
| 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 |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 18 | */ |
David 'Digit' Turner | a889d35 | 2014-03-20 12:35:32 +0100 | [diff] [blame] | 19 | #include "cpu.h" |
David 'Digit' Turner | 86b1fb0 | 2014-03-21 15:20:21 +0100 | [diff] [blame] | 20 | #include "tcg.h" |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 21 | #include "helper.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 22 | |
| 23 | #define SIGNBIT (uint32_t)0x80000000 |
| 24 | #define SIGNBIT64 ((uint64_t)1 << 63) |
| 25 | |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 26 | #if !defined(CONFIG_USER_ONLY) |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 27 | static void raise_exception(CPUARMState *env, int tt) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 28 | { |
| 29 | env->exception_index = tt; |
David 'Digit' Turner | 85c6220 | 2014-02-16 20:53:40 +0100 | [diff] [blame] | 30 | cpu_loop_exit(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 31 | } |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 32 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 33 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 34 | uint32_t HELPER(neon_tbl)(CPUARMState *env, uint32_t ireg, uint32_t def, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 35 | uint32_t rn, uint32_t maxindex) |
| 36 | { |
| 37 | uint32_t val; |
| 38 | uint32_t tmp; |
| 39 | int index; |
| 40 | int shift; |
| 41 | uint64_t *table; |
| 42 | table = (uint64_t *)&env->vfp.regs[rn]; |
| 43 | val = 0; |
| 44 | for (shift = 0; shift < 32; shift += 8) { |
| 45 | index = (ireg >> shift) & 0xff; |
| 46 | if (index < maxindex) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 47 | tmp = (table[index >> 3] >> ((index & 7) << 3)) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 48 | val |= tmp << shift; |
| 49 | } else { |
| 50 | val |= def & (0xff << shift); |
| 51 | } |
| 52 | } |
| 53 | return val; |
| 54 | } |
| 55 | |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 56 | #undef env |
| 57 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 58 | #if !defined(CONFIG_USER_ONLY) |
| 59 | |
David 'Digit' Turner | a889d35 | 2014-03-20 12:35:32 +0100 | [diff] [blame] | 60 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 61 | #define MMUSUFFIX _mmu |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 62 | |
| 63 | #define SHIFT 0 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 64 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 65 | |
| 66 | #define SHIFT 1 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 67 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 68 | |
| 69 | #define SHIFT 2 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 70 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 71 | |
| 72 | #define SHIFT 3 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 73 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 74 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 75 | /* try to fill the TLB and return an exception if error. If retaddr is |
| 76 | NULL, it means that the function was called in C code (i.e. not |
| 77 | from generated code or from helper.c) */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 78 | void tlb_fill(CPUARMState *env, target_ulong addr, int is_write, int mmu_idx, |
| 79 | uintptr_t retaddr) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 80 | { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 81 | int ret; |
| 82 | |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 83 | ret = cpu_arm_handle_mmu_fault(env, addr, is_write, mmu_idx); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 84 | if (unlikely(ret)) { |
| 85 | if (retaddr) { |
| 86 | /* now we have a real cpu fault */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 87 | cpu_restore_state(env, retaddr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 88 | } |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 89 | raise_exception(env, env->exception_index); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 90 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | } |
| 92 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 93 | void HELPER(set_cp)(CPUARMState *env, uint32_t insn, uint32_t val) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 94 | { |
| 95 | int cp_num = (insn >> 8) & 0xf; |
| 96 | int cp_info = (insn >> 5) & 7; |
| 97 | int src = (insn >> 16) & 0xf; |
| 98 | int operand = insn & 0xf; |
| 99 | |
| 100 | if (env->cp[cp_num].cp_write) |
| 101 | env->cp[cp_num].cp_write(env->cp[cp_num].opaque, |
David 'Digit' Turner | eb3bc46 | 2014-03-21 11:09:04 +0100 | [diff] [blame] | 102 | cp_info, src, operand, val, (void*)GETPC()); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 103 | } |
| 104 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 105 | uint32_t HELPER(get_cp)(CPUARMState *env, uint32_t insn) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 106 | { |
| 107 | int cp_num = (insn >> 8) & 0xf; |
| 108 | int cp_info = (insn >> 5) & 7; |
| 109 | int dest = (insn >> 16) & 0xf; |
| 110 | int operand = insn & 0xf; |
| 111 | |
| 112 | if (env->cp[cp_num].cp_read) |
| 113 | return env->cp[cp_num].cp_read(env->cp[cp_num].opaque, |
David 'Digit' Turner | eb3bc46 | 2014-03-21 11:09:04 +0100 | [diff] [blame] | 114 | cp_info, dest, operand, (void*)GETPC()); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | #else |
| 119 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 120 | void HELPER(set_cp)(CPUARMState *env, uint32_t insn, uint32_t val) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 121 | { |
| 122 | int op1 = (insn >> 8) & 0xf; |
| 123 | cpu_abort(env, "cp%i insn %08x\n", op1, insn); |
| 124 | return; |
| 125 | } |
| 126 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 127 | uint32_t HELPER(get_cp)(CPUARMState *env, uint32_t insn) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 128 | { |
| 129 | int op1 = (insn >> 8) & 0xf; |
| 130 | cpu_abort(env, "cp%i insn %08x\n", op1, insn); |
| 131 | return 0; |
| 132 | } |
| 133 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 134 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 135 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 136 | uint32_t HELPER(add_setq)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 137 | { |
| 138 | uint32_t res = a + b; |
| 139 | if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT)) |
| 140 | env->QF = 1; |
| 141 | return res; |
| 142 | } |
| 143 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 144 | uint32_t HELPER(add_saturate)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 145 | { |
| 146 | uint32_t res = a + b; |
| 147 | if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT)) { |
| 148 | env->QF = 1; |
| 149 | res = ~(((int32_t)a >> 31) ^ SIGNBIT); |
| 150 | } |
| 151 | return res; |
| 152 | } |
| 153 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 154 | uint32_t HELPER(sub_saturate)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 155 | { |
| 156 | uint32_t res = a - b; |
| 157 | if (((res ^ a) & SIGNBIT) && ((a ^ b) & SIGNBIT)) { |
| 158 | env->QF = 1; |
| 159 | res = ~(((int32_t)a >> 31) ^ SIGNBIT); |
| 160 | } |
| 161 | return res; |
| 162 | } |
| 163 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 164 | uint32_t HELPER(double_saturate)(CPUARMState *env, int32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 165 | { |
| 166 | uint32_t res; |
| 167 | if (val >= 0x40000000) { |
| 168 | res = ~SIGNBIT; |
| 169 | env->QF = 1; |
| 170 | } else if (val <= (int32_t)0xc0000000) { |
| 171 | res = SIGNBIT; |
| 172 | env->QF = 1; |
| 173 | } else { |
| 174 | res = val << 1; |
| 175 | } |
| 176 | return res; |
| 177 | } |
| 178 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 179 | uint32_t HELPER(add_usaturate)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 180 | { |
| 181 | uint32_t res = a + b; |
| 182 | if (res < a) { |
| 183 | env->QF = 1; |
| 184 | res = ~0; |
| 185 | } |
| 186 | return res; |
| 187 | } |
| 188 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 189 | uint32_t HELPER(sub_usaturate)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 190 | { |
| 191 | uint32_t res = a - b; |
| 192 | if (res > a) { |
| 193 | env->QF = 1; |
| 194 | res = 0; |
| 195 | } |
| 196 | return res; |
| 197 | } |
| 198 | |
| 199 | /* Signed saturation. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 200 | static inline uint32_t do_ssat(CPUARMState *env, int32_t val, int shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 201 | { |
| 202 | int32_t top; |
| 203 | uint32_t mask; |
| 204 | |
| 205 | top = val >> shift; |
| 206 | mask = (1u << shift) - 1; |
| 207 | if (top > 0) { |
| 208 | env->QF = 1; |
| 209 | return mask; |
| 210 | } else if (top < -1) { |
| 211 | env->QF = 1; |
| 212 | return ~mask; |
| 213 | } |
| 214 | return val; |
| 215 | } |
| 216 | |
| 217 | /* Unsigned saturation. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 218 | static inline uint32_t do_usat(CPUARMState *env, int32_t val, int shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 219 | { |
| 220 | uint32_t max; |
| 221 | |
| 222 | max = (1u << shift) - 1; |
| 223 | if (val < 0) { |
| 224 | env->QF = 1; |
| 225 | return 0; |
| 226 | } else if (val > max) { |
| 227 | env->QF = 1; |
| 228 | return max; |
| 229 | } |
| 230 | return val; |
| 231 | } |
| 232 | |
| 233 | /* Signed saturate. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 234 | uint32_t HELPER(ssat)(CPUARMState *env, uint32_t x, uint32_t shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 235 | { |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 236 | return do_ssat(env, x, shift); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | /* Dual halfword signed saturate. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 240 | uint32_t HELPER(ssat16)(CPUARMState *env, uint32_t x, uint32_t shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 241 | { |
| 242 | uint32_t res; |
| 243 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 244 | res = (uint16_t)do_ssat(env, (int16_t)x, shift); |
| 245 | res |= do_ssat(env, ((int32_t)x) >> 16, shift) << 16; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 246 | return res; |
| 247 | } |
| 248 | |
| 249 | /* Unsigned saturate. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 250 | uint32_t HELPER(usat)(CPUARMState *env, uint32_t x, uint32_t shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 251 | { |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 252 | return do_usat(env, x, shift); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | /* Dual halfword unsigned saturate. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 256 | uint32_t HELPER(usat16)(CPUARMState *env, uint32_t x, uint32_t shift) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 257 | { |
| 258 | uint32_t res; |
| 259 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 260 | res = (uint16_t)do_usat(env, (int16_t)x, shift); |
| 261 | res |= do_usat(env, ((int32_t)x) >> 16, shift) << 16; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 262 | return res; |
| 263 | } |
| 264 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 265 | void HELPER(wfi)(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 266 | { |
| 267 | env->exception_index = EXCP_HLT; |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 268 | ENV_GET_CPU(env)->halted = 1; |
David 'Digit' Turner | 85c6220 | 2014-02-16 20:53:40 +0100 | [diff] [blame] | 269 | cpu_loop_exit(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 270 | } |
| 271 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 272 | void HELPER(exception)(CPUARMState *env, uint32_t excp) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 273 | { |
| 274 | env->exception_index = excp; |
David 'Digit' Turner | 85c6220 | 2014-02-16 20:53:40 +0100 | [diff] [blame] | 275 | cpu_loop_exit(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 276 | } |
| 277 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 278 | uint32_t HELPER(cpsr_read)(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 279 | { |
| 280 | return cpsr_read(env) & ~CPSR_EXEC; |
| 281 | } |
| 282 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 283 | void HELPER(cpsr_write)(CPUARMState *env, uint32_t val, uint32_t mask) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 284 | { |
| 285 | cpsr_write(env, val, mask); |
| 286 | } |
| 287 | |
| 288 | /* Access to user mode registers from privileged modes. */ |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 289 | uint32_t HELPER(get_user_reg)(CPUARMState *env, uint32_t regno) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 290 | { |
| 291 | uint32_t val; |
| 292 | |
| 293 | if (regno == 13) { |
| 294 | val = env->banked_r13[0]; |
| 295 | } else if (regno == 14) { |
| 296 | val = env->banked_r14[0]; |
| 297 | } else if (regno >= 8 |
| 298 | && (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) { |
| 299 | val = env->usr_regs[regno - 8]; |
| 300 | } else { |
| 301 | val = env->regs[regno]; |
| 302 | } |
| 303 | return val; |
| 304 | } |
| 305 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 306 | void HELPER(set_user_reg)(CPUARMState *env, uint32_t regno, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 307 | { |
| 308 | if (regno == 13) { |
| 309 | env->banked_r13[0] = val; |
| 310 | } else if (regno == 14) { |
| 311 | env->banked_r14[0] = val; |
| 312 | } else if (regno >= 8 |
| 313 | && (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) { |
| 314 | env->usr_regs[regno - 8] = val; |
| 315 | } else { |
| 316 | env->regs[regno] = val; |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /* ??? Flag setting arithmetic is awkward because we need to do comparisons. |
| 321 | The only way to do that in TCG is a conditional branch, which clobbers |
| 322 | all our temporaries. For now implement these as helper functions. */ |
| 323 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 324 | uint32_t HELPER (add_cc)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 325 | { |
| 326 | uint32_t result; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 327 | result = a + b; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 328 | env->NF = env->ZF = result; |
| 329 | env->CF = result < a; |
| 330 | env->VF = (a ^ b ^ -1) & (a ^ result); |
| 331 | return result; |
| 332 | } |
| 333 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 334 | uint32_t HELPER(adc_cc)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 335 | { |
| 336 | uint32_t result; |
| 337 | if (!env->CF) { |
| 338 | result = a + b; |
| 339 | env->CF = result < a; |
| 340 | } else { |
| 341 | result = a + b + 1; |
| 342 | env->CF = result <= a; |
| 343 | } |
| 344 | env->VF = (a ^ b ^ -1) & (a ^ result); |
| 345 | env->NF = env->ZF = result; |
| 346 | return result; |
| 347 | } |
| 348 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 349 | uint32_t HELPER(sub_cc)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 350 | { |
| 351 | uint32_t result; |
| 352 | result = a - b; |
| 353 | env->NF = env->ZF = result; |
| 354 | env->CF = a >= b; |
| 355 | env->VF = (a ^ b) & (a ^ result); |
| 356 | return result; |
| 357 | } |
| 358 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 359 | uint32_t HELPER(sbc_cc)(CPUARMState *env, uint32_t a, uint32_t b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 360 | { |
| 361 | uint32_t result; |
| 362 | if (!env->CF) { |
| 363 | result = a - b - 1; |
| 364 | env->CF = a > b; |
| 365 | } else { |
| 366 | result = a - b; |
| 367 | env->CF = a >= b; |
| 368 | } |
| 369 | env->VF = (a ^ b) & (a ^ result); |
| 370 | env->NF = env->ZF = result; |
| 371 | return result; |
| 372 | } |
| 373 | |
| 374 | /* Similarly for variable shift instructions. */ |
| 375 | |
| 376 | uint32_t HELPER(shl)(uint32_t x, uint32_t i) |
| 377 | { |
| 378 | int shift = i & 0xff; |
| 379 | if (shift >= 32) |
| 380 | return 0; |
| 381 | return x << shift; |
| 382 | } |
| 383 | |
| 384 | uint32_t HELPER(shr)(uint32_t x, uint32_t i) |
| 385 | { |
| 386 | int shift = i & 0xff; |
| 387 | if (shift >= 32) |
| 388 | return 0; |
| 389 | return (uint32_t)x >> shift; |
| 390 | } |
| 391 | |
| 392 | uint32_t HELPER(sar)(uint32_t x, uint32_t i) |
| 393 | { |
| 394 | int shift = i & 0xff; |
| 395 | if (shift >= 32) |
| 396 | shift = 31; |
| 397 | return (int32_t)x >> shift; |
| 398 | } |
| 399 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 400 | uint32_t HELPER(shl_cc)(CPUARMState *env, uint32_t x, uint32_t i) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 401 | { |
| 402 | int shift = i & 0xff; |
| 403 | if (shift >= 32) { |
| 404 | if (shift == 32) |
| 405 | env->CF = x & 1; |
| 406 | else |
| 407 | env->CF = 0; |
| 408 | return 0; |
| 409 | } else if (shift != 0) { |
| 410 | env->CF = (x >> (32 - shift)) & 1; |
| 411 | return x << shift; |
| 412 | } |
| 413 | return x; |
| 414 | } |
| 415 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 416 | uint32_t HELPER(shr_cc)(CPUARMState *env, uint32_t x, uint32_t i) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 417 | { |
| 418 | int shift = i & 0xff; |
| 419 | if (shift >= 32) { |
| 420 | if (shift == 32) |
| 421 | env->CF = (x >> 31) & 1; |
| 422 | else |
| 423 | env->CF = 0; |
| 424 | return 0; |
| 425 | } else if (shift != 0) { |
| 426 | env->CF = (x >> (shift - 1)) & 1; |
| 427 | return x >> shift; |
| 428 | } |
| 429 | return x; |
| 430 | } |
| 431 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 432 | uint32_t HELPER(sar_cc)(CPUARMState *env, uint32_t x, uint32_t i) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 433 | { |
| 434 | int shift = i & 0xff; |
| 435 | if (shift >= 32) { |
| 436 | env->CF = (x >> 31) & 1; |
| 437 | return (int32_t)x >> 31; |
| 438 | } else if (shift != 0) { |
| 439 | env->CF = (x >> (shift - 1)) & 1; |
| 440 | return (int32_t)x >> shift; |
| 441 | } |
| 442 | return x; |
| 443 | } |
| 444 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 445 | uint32_t HELPER(ror_cc)(CPUARMState *env, uint32_t x, uint32_t i) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 446 | { |
| 447 | int shift1, shift; |
| 448 | shift1 = i & 0xff; |
| 449 | shift = shift1 & 0x1f; |
| 450 | if (shift == 0) { |
| 451 | if (shift1 != 0) |
| 452 | env->CF = (x >> 31) & 1; |
| 453 | return x; |
| 454 | } else { |
| 455 | env->CF = (x >> (shift - 1)) & 1; |
| 456 | return ((uint32_t)x >> shift) | (x << (32 - shift)); |
| 457 | } |
| 458 | } |
| 459 | |
David 'Digit' Turner | 0b4c9e8 | 2014-04-03 00:37:18 +0200 | [diff] [blame] | 460 | void HELPER(neon_vldst_all)(CPUARMState *env, uint32_t insn) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 461 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 462 | #if defined(CONFIG_USER_ONLY) |
| 463 | #define LDB(addr) ldub(addr) |
| 464 | #define LDW(addr) lduw(addr) |
| 465 | #define LDL(addr) ldl(addr) |
| 466 | #define LDQ(addr) ldq(addr) |
| 467 | #define STB(addr, val) stb(addr, val) |
| 468 | #define STW(addr, val) stw(addr, val) |
| 469 | #define STL(addr, val) stl(addr, val) |
| 470 | #define STQ(addr, val) stq(addr, val) |
| 471 | #else |
| 472 | int user = cpu_mmu_index(env); |
David 'Digit' Turner | 86b1fb0 | 2014-03-21 15:20:21 +0100 | [diff] [blame] | 473 | #define LDB(addr) helper_ldb_mmu(env, addr, user) |
| 474 | #define LDW(addr) helper_le_lduw_mmu(env, addr, user, GETPC()) |
| 475 | #define LDL(addr) helper_le_ldul_mmu(env, addr, user, GETPC()) |
| 476 | #define LDQ(addr) helper_le_ldq_mmu(env, addr, user, GETPC()) |
| 477 | #define STB(addr, val) helper_stb_mmu(env, addr, val, user) |
| 478 | #define STW(addr, val) helper_le_stw_mmu(env, addr, val, user, GETPC()) |
| 479 | #define STL(addr, val) helper_le_stl_mmu(env, addr, val, user, GETPC()) |
| 480 | #define STQ(addr, val) helper_le_stq_mmu(env, addr, val, user, GETPC()) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 481 | #endif |
| 482 | static const struct { |
| 483 | int nregs; |
| 484 | int interleave; |
| 485 | int spacing; |
| 486 | } neon_ls_element_type[11] = { |
| 487 | {4, 4, 1}, |
| 488 | {4, 4, 2}, |
| 489 | {4, 1, 1}, |
| 490 | {4, 2, 1}, |
| 491 | {3, 3, 1}, |
| 492 | {3, 3, 2}, |
| 493 | {3, 1, 1}, |
| 494 | {1, 1, 1}, |
| 495 | {2, 2, 1}, |
| 496 | {2, 2, 2}, |
| 497 | {2, 1, 1} |
| 498 | }; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 499 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 500 | const int op = (insn >> 8) & 0xf; |
| 501 | const int size = (insn >> 6) & 3; |
| 502 | int rd = ((insn >> 12) & 0x0f) | ((insn >> 18) & 0x10); |
| 503 | const int rn = (insn >> 16) & 0xf; |
| 504 | const int load = (insn & (1 << 21)) != 0; |
| 505 | const int nregs = neon_ls_element_type[op].nregs; |
| 506 | const int interleave = neon_ls_element_type[op].interleave; |
| 507 | const int spacing = neon_ls_element_type[op].spacing; |
| 508 | uint32_t addr = env->regs[rn]; |
| 509 | const int stride = (1 << size) * interleave; |
| 510 | int i, reg; |
| 511 | uint64_t tmp64; |
| 512 | |
| 513 | for (reg = 0; reg < nregs; reg++) { |
| 514 | if (interleave > 2 || (interleave == 2 && nregs == 2)) { |
| 515 | addr = env->regs[rn] + (1 << size) * reg; |
| 516 | } else if (interleave == 2 && nregs == 4 && reg == 2) { |
| 517 | addr = env->regs[rn] + (1 << size); |
| 518 | } |
| 519 | switch (size) { |
| 520 | case 3: |
| 521 | if (load) { |
| 522 | env->vfp.regs[rd] = make_float64(LDQ(addr)); |
| 523 | } else { |
| 524 | STQ(addr, float64_val(env->vfp.regs[rd])); |
| 525 | } |
| 526 | addr += stride; |
| 527 | break; |
| 528 | case 2: |
| 529 | if (load) { |
| 530 | tmp64 = (uint32_t)LDL(addr); |
| 531 | addr += stride; |
| 532 | tmp64 |= (uint64_t)LDL(addr) << 32; |
| 533 | addr += stride; |
| 534 | env->vfp.regs[rd] = make_float64(tmp64); |
| 535 | } else { |
| 536 | tmp64 = float64_val(env->vfp.regs[rd]); |
| 537 | STL(addr, tmp64); |
| 538 | addr += stride; |
| 539 | STL(addr, tmp64 >> 32); |
| 540 | addr += stride; |
| 541 | } |
| 542 | break; |
| 543 | case 1: |
| 544 | if (load) { |
| 545 | tmp64 = 0ull; |
| 546 | for (i = 0; i < 4; i++, addr += stride) { |
| 547 | tmp64 |= (uint64_t)LDW(addr) << (i * 16); |
| 548 | } |
| 549 | env->vfp.regs[rd] = make_float64(tmp64); |
| 550 | } else { |
| 551 | tmp64 = float64_val(env->vfp.regs[rd]); |
| 552 | for (i = 0; i < 4; i++, addr += stride, tmp64 >>= 16) { |
| 553 | STW(addr, tmp64); |
| 554 | } |
| 555 | } |
| 556 | break; |
| 557 | case 0: |
| 558 | if (load) { |
| 559 | tmp64 = 0ull; |
| 560 | for (i = 0; i < 8; i++, addr += stride) { |
| 561 | tmp64 |= (uint64_t)LDB(addr) << (i * 8); |
| 562 | } |
| 563 | env->vfp.regs[rd] = make_float64(tmp64); |
| 564 | } else { |
| 565 | tmp64 = float64_val(env->vfp.regs[rd]); |
| 566 | for (i = 0; i < 8; i++, addr += stride, tmp64 >>= 8) { |
| 567 | STB(addr, tmp64); |
| 568 | } |
| 569 | } |
| 570 | break; |
| 571 | } |
| 572 | rd += spacing; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 573 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 574 | #undef LDB |
| 575 | #undef LDW |
| 576 | #undef LDL |
| 577 | #undef LDQ |
| 578 | #undef STB |
| 579 | #undef STW |
| 580 | #undef STL |
| 581 | #undef STQ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 582 | } |