The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "cpu.h" |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 6 | #include "exec/exec-all.h" |
| 7 | #include "exec/gdbstub.h" |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 8 | #include "helper.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 9 | #include "qemu-common.h" |
David 'Digit' Turner | e90d665 | 2013-12-14 14:55:12 +0100 | [diff] [blame] | 10 | #include "qemu/host-utils.h" |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 11 | #if !defined(CONFIG_USER_ONLY) |
| 12 | //#include "hw/loader.h" |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 13 | #endif |
| 14 | |
| 15 | static uint32_t cortexa9_cp15_c0_c1[8] = |
| 16 | { 0x1031, 0x11, 0x000, 0, 0x00100103, 0x20000000, 0x01230000, 0x00002111 }; |
| 17 | |
| 18 | static uint32_t cortexa9_cp15_c0_c2[8] = |
| 19 | { 0x00101111, 0x13112111, 0x21232041, 0x11112131, 0x00111142, 0, 0, 0 }; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 20 | |
| 21 | static uint32_t cortexa8_cp15_c0_c1[8] = |
| 22 | { 0x1031, 0x11, 0x400, 0, 0x31100003, 0x20000000, 0x01202000, 0x11 }; |
| 23 | |
| 24 | static uint32_t cortexa8_cp15_c0_c2[8] = |
| 25 | { 0x00101111, 0x12112111, 0x21232031, 0x11112131, 0x00111142, 0, 0, 0 }; |
| 26 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 27 | static uint32_t cortexa8r2_cp15_c0_c2[8] = |
| 28 | { 0x00101111, 0x12112111, 0x21232031, 0x11112131, 0x00011142, 0, 0, 0 }; |
| 29 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 30 | static uint32_t mpcore_cp15_c0_c1[8] = |
| 31 | { 0x111, 0x1, 0, 0x2, 0x01100103, 0x10020302, 0x01222000, 0 }; |
| 32 | |
| 33 | static uint32_t mpcore_cp15_c0_c2[8] = |
| 34 | { 0x00100011, 0x12002111, 0x11221011, 0x01102131, 0x141, 0, 0, 0 }; |
| 35 | |
| 36 | static uint32_t arm1136_cp15_c0_c1[8] = |
| 37 | { 0x111, 0x1, 0x2, 0x3, 0x01130003, 0x10030302, 0x01222110, 0 }; |
| 38 | |
| 39 | static uint32_t arm1136_cp15_c0_c2[8] = |
| 40 | { 0x00140011, 0x12002111, 0x11231111, 0x01102131, 0x141, 0, 0, 0 }; |
| 41 | |
| 42 | static uint32_t cpu_arm_find_by_name(const char *name); |
| 43 | |
| 44 | static inline void set_feature(CPUARMState *env, int feature) |
| 45 | { |
| 46 | env->features |= 1u << feature; |
| 47 | } |
| 48 | |
| 49 | static void cpu_reset_model_id(CPUARMState *env, uint32_t id) |
| 50 | { |
| 51 | env->cp15.c0_cpuid = id; |
| 52 | switch (id) { |
| 53 | case ARM_CPUID_ARM926: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 54 | set_feature(env, ARM_FEATURE_V4T); |
| 55 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 56 | set_feature(env, ARM_FEATURE_VFP); |
| 57 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41011090; |
| 58 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 59 | env->cp15.c1_sys = 0x00090078; |
| 60 | break; |
| 61 | case ARM_CPUID_ARM946: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 62 | set_feature(env, ARM_FEATURE_V4T); |
| 63 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 64 | set_feature(env, ARM_FEATURE_MPU); |
| 65 | env->cp15.c0_cachetype = 0x0f004006; |
| 66 | env->cp15.c1_sys = 0x00000078; |
| 67 | break; |
| 68 | case ARM_CPUID_ARM1026: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 69 | set_feature(env, ARM_FEATURE_V4T); |
| 70 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 71 | set_feature(env, ARM_FEATURE_VFP); |
| 72 | set_feature(env, ARM_FEATURE_AUXCR); |
| 73 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410110a0; |
| 74 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 75 | env->cp15.c1_sys = 0x00090078; |
| 76 | break; |
| 77 | case ARM_CPUID_ARM1136_R2: |
| 78 | case ARM_CPUID_ARM1136: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 79 | set_feature(env, ARM_FEATURE_V4T); |
| 80 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 81 | set_feature(env, ARM_FEATURE_V6); |
| 82 | set_feature(env, ARM_FEATURE_VFP); |
| 83 | set_feature(env, ARM_FEATURE_AUXCR); |
| 84 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; |
| 85 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; |
| 86 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; |
| 87 | memcpy(env->cp15.c0_c1, arm1136_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 88 | memcpy(env->cp15.c0_c2, arm1136_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 89 | env->cp15.c0_cachetype = 0x1dd20d2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 90 | env->cp15.c1_sys = 0x00050078; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | break; |
| 92 | case ARM_CPUID_ARM11MPCORE: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 93 | set_feature(env, ARM_FEATURE_V4T); |
| 94 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 95 | set_feature(env, ARM_FEATURE_V6); |
| 96 | set_feature(env, ARM_FEATURE_V6K); |
| 97 | set_feature(env, ARM_FEATURE_VFP); |
| 98 | set_feature(env, ARM_FEATURE_AUXCR); |
| 99 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; |
| 100 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; |
| 101 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; |
| 102 | memcpy(env->cp15.c0_c1, mpcore_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 103 | memcpy(env->cp15.c0_c2, mpcore_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 104 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 105 | break; |
| 106 | case ARM_CPUID_CORTEXA8: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 107 | set_feature(env, ARM_FEATURE_V4T); |
| 108 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 109 | set_feature(env, ARM_FEATURE_V6); |
| 110 | set_feature(env, ARM_FEATURE_V6K); |
| 111 | set_feature(env, ARM_FEATURE_V7); |
| 112 | set_feature(env, ARM_FEATURE_AUXCR); |
| 113 | set_feature(env, ARM_FEATURE_THUMB2); |
| 114 | set_feature(env, ARM_FEATURE_VFP); |
| 115 | set_feature(env, ARM_FEATURE_VFP3); |
| 116 | set_feature(env, ARM_FEATURE_NEON); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 117 | set_feature(env, ARM_FEATURE_THUMB2EE); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 118 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 119 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c0; |
| 120 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 121 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100; |
| 122 | memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 123 | memcpy(env->cp15.c0_c2, cortexa8_cp15_c0_c2, 8 * sizeof(uint32_t)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 124 | env->cp15.c0_cachetype = 0x82048004; |
| 125 | env->cp15.c0_clid = (1 << 27) | (2 << 24) | 3; |
| 126 | env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */ |
| 127 | env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */ |
| 128 | env->cp15.c0_ccsid[2] = 0xf0000000; /* No L2 icache. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 129 | env->cp15.c1_sys = 0x00c50078; |
| 130 | break; |
| 131 | case ARM_CPUID_CORTEXA8_R2: |
| 132 | set_feature(env, ARM_FEATURE_V4T); |
| 133 | set_feature(env, ARM_FEATURE_V5); |
| 134 | set_feature(env, ARM_FEATURE_V6); |
| 135 | set_feature(env, ARM_FEATURE_V6K); |
| 136 | set_feature(env, ARM_FEATURE_V7); |
| 137 | set_feature(env, ARM_FEATURE_AUXCR); |
| 138 | set_feature(env, ARM_FEATURE_THUMB2); |
| 139 | set_feature(env, ARM_FEATURE_VFP); |
| 140 | set_feature(env, ARM_FEATURE_VFP3); |
| 141 | set_feature(env, ARM_FEATURE_NEON); |
| 142 | set_feature(env, ARM_FEATURE_THUMB2EE); |
| 143 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
| 144 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c2; |
| 145 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 146 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011111; |
| 147 | memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 148 | memcpy(env->cp15.c0_c2, cortexa8r2_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 149 | env->cp15.c0_cachetype = 0x82048004; |
| 150 | env->cp15.c0_clid = (1 << 27) | (2 << 24) | (4 << 3) | 3; |
| 151 | env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */ |
| 152 | env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */ |
| 153 | env->cp15.c0_ccsid[2] = 0xf03fe03a; /* 256k L2 cache. */ |
| 154 | env->cp15.c1_sys = 0x00c50078; |
| 155 | break; |
| 156 | case ARM_CPUID_CORTEXA9: |
| 157 | set_feature(env, ARM_FEATURE_V4T); |
| 158 | set_feature(env, ARM_FEATURE_V5); |
| 159 | set_feature(env, ARM_FEATURE_V6); |
| 160 | set_feature(env, ARM_FEATURE_V6K); |
| 161 | set_feature(env, ARM_FEATURE_V7); |
| 162 | set_feature(env, ARM_FEATURE_AUXCR); |
| 163 | set_feature(env, ARM_FEATURE_THUMB2); |
| 164 | set_feature(env, ARM_FEATURE_VFP); |
| 165 | set_feature(env, ARM_FEATURE_VFP3); |
| 166 | set_feature(env, ARM_FEATURE_VFP_FP16); |
| 167 | set_feature(env, ARM_FEATURE_NEON); |
| 168 | set_feature(env, ARM_FEATURE_THUMB2EE); |
| 169 | /* Note that A9 supports the MP extensions even for |
| 170 | * A9UP and single-core A9MP (which are both different |
| 171 | * and valid configurations; we don't model A9UP). |
| 172 | */ |
| 173 | set_feature(env, ARM_FEATURE_V7MP); |
| 174 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
| 175 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41034000; /* Guess */ |
| 176 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 177 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x01111111; |
| 178 | memcpy(env->cp15.c0_c1, cortexa9_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 179 | memcpy(env->cp15.c0_c2, cortexa9_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 180 | env->cp15.c0_cachetype = 0x80038003; |
| 181 | env->cp15.c0_clid = (1 << 27) | (1 << 24) | 3; |
| 182 | env->cp15.c0_ccsid[0] = 0xe00fe015; /* 16k L1 dcache. */ |
| 183 | env->cp15.c0_ccsid[1] = 0x200fe015; /* 16k L1 icache. */ |
| 184 | env->cp15.c1_sys = 0x00c50078; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 185 | break; |
| 186 | case ARM_CPUID_CORTEXM3: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 187 | set_feature(env, ARM_FEATURE_V4T); |
| 188 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 189 | set_feature(env, ARM_FEATURE_V6); |
| 190 | set_feature(env, ARM_FEATURE_THUMB2); |
| 191 | set_feature(env, ARM_FEATURE_V7); |
| 192 | set_feature(env, ARM_FEATURE_M); |
| 193 | set_feature(env, ARM_FEATURE_DIV); |
| 194 | break; |
| 195 | case ARM_CPUID_ANY: /* For userspace emulation. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 196 | set_feature(env, ARM_FEATURE_V4T); |
| 197 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 198 | set_feature(env, ARM_FEATURE_V6); |
| 199 | set_feature(env, ARM_FEATURE_V6K); |
| 200 | set_feature(env, ARM_FEATURE_V7); |
| 201 | set_feature(env, ARM_FEATURE_THUMB2); |
| 202 | set_feature(env, ARM_FEATURE_VFP); |
| 203 | set_feature(env, ARM_FEATURE_VFP3); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 204 | set_feature(env, ARM_FEATURE_VFP_FP16); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 205 | set_feature(env, ARM_FEATURE_NEON); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 206 | set_feature(env, ARM_FEATURE_THUMB2EE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 207 | set_feature(env, ARM_FEATURE_DIV); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 208 | set_feature(env, ARM_FEATURE_V7MP); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 209 | break; |
| 210 | case ARM_CPUID_TI915T: |
| 211 | case ARM_CPUID_TI925T: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 212 | set_feature(env, ARM_FEATURE_V4T); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 213 | set_feature(env, ARM_FEATURE_OMAPCP); |
| 214 | env->cp15.c0_cpuid = ARM_CPUID_TI925T; /* Depends on wiring. */ |
| 215 | env->cp15.c0_cachetype = 0x5109149; |
| 216 | env->cp15.c1_sys = 0x00000070; |
| 217 | env->cp15.c15_i_max = 0x000; |
| 218 | env->cp15.c15_i_min = 0xff0; |
| 219 | break; |
| 220 | case ARM_CPUID_PXA250: |
| 221 | case ARM_CPUID_PXA255: |
| 222 | case ARM_CPUID_PXA260: |
| 223 | case ARM_CPUID_PXA261: |
| 224 | case ARM_CPUID_PXA262: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 225 | set_feature(env, ARM_FEATURE_V4T); |
| 226 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 227 | set_feature(env, ARM_FEATURE_XSCALE); |
| 228 | /* JTAG_ID is ((id << 28) | 0x09265013) */ |
| 229 | env->cp15.c0_cachetype = 0xd172172; |
| 230 | env->cp15.c1_sys = 0x00000078; |
| 231 | break; |
| 232 | case ARM_CPUID_PXA270_A0: |
| 233 | case ARM_CPUID_PXA270_A1: |
| 234 | case ARM_CPUID_PXA270_B0: |
| 235 | case ARM_CPUID_PXA270_B1: |
| 236 | case ARM_CPUID_PXA270_C0: |
| 237 | case ARM_CPUID_PXA270_C5: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 238 | set_feature(env, ARM_FEATURE_V4T); |
| 239 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 240 | set_feature(env, ARM_FEATURE_XSCALE); |
| 241 | /* JTAG_ID is ((id << 28) | 0x09265013) */ |
| 242 | set_feature(env, ARM_FEATURE_IWMMXT); |
| 243 | env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q'; |
| 244 | env->cp15.c0_cachetype = 0xd172172; |
| 245 | env->cp15.c1_sys = 0x00000078; |
| 246 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 247 | case ARM_CPUID_SA1100: |
| 248 | case ARM_CPUID_SA1110: |
| 249 | set_feature(env, ARM_FEATURE_STRONGARM); |
| 250 | env->cp15.c1_sys = 0x00000070; |
| 251 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 252 | default: |
| 253 | cpu_abort(env, "Bad CPU ID: %x\n", id); |
| 254 | break; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | void cpu_reset(CPUARMState *env) |
| 259 | { |
| 260 | uint32_t id; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 261 | |
| 262 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { |
| 263 | qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); |
| 264 | log_cpu_state(env, 0); |
| 265 | } |
| 266 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 267 | id = env->cp15.c0_cpuid; |
| 268 | memset(env, 0, offsetof(CPUARMState, breakpoints)); |
| 269 | if (id) |
| 270 | cpu_reset_model_id(env, id); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 271 | /* DBGDIDR : we implement nothing, and just mirror the main ID |
| 272 | * register's Variant and Revision fields. |
| 273 | */ |
| 274 | env->cp14_dbgdidr = (id >> 16 & 0xf0) | 0xf; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 275 | #if defined (CONFIG_USER_ONLY) |
| 276 | env->uncached_cpsr = ARM_CPU_MODE_USR; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 277 | /* For user mode we must enable access to coprocessors */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 278 | env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 279 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
| 280 | env->cp15.c15_cpar = 3; |
| 281 | } else if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 282 | env->cp15.c15_cpar = 1; |
| 283 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 284 | #else |
| 285 | /* SVC mode with interrupts disabled. */ |
| 286 | env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I; |
| 287 | /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 288 | clear at reset. Initial SP and PC are loaded from ROM. */ |
| 289 | if (IS_M(env)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 290 | env->uncached_cpsr &= ~CPSR_I; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 291 | #ifndef CONFIG_ANDROID /* No hw/loader.h and no ROM support for now on Android */ |
David 'Digit' Turner | a2c14f9 | 2014-02-04 01:02:30 +0100 | [diff] [blame] | 292 | uint32_t pc; |
| 293 | uint8_t *rom; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 294 | rom = rom_ptr(0); |
| 295 | if (rom) { |
| 296 | /* We should really use ldl_phys here, in case the guest |
| 297 | modified flash and reset itself. However images |
| 298 | loaded via -kenrel have not been copied yet, so load the |
| 299 | values directly from there. */ |
| 300 | env->regs[13] = ldl_p(rom); |
| 301 | pc = ldl_p(rom + 4); |
| 302 | env->thumb = pc & 1; |
| 303 | env->regs[15] = pc & ~1; |
| 304 | } |
| 305 | #endif |
| 306 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 307 | env->vfp.xregs[ARM_VFP_FPEXC] = 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 308 | env->cp15.c2_base_mask = 0xffffc000u; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 309 | /* v7 performance monitor control register: same implementor |
| 310 | * field as main ID register, and we implement no event counters. |
| 311 | */ |
| 312 | env->cp15.c9_pmcr = (id & 0xff000000); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 313 | #endif |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 314 | set_flush_to_zero(1, &env->vfp.standard_fp_status); |
| 315 | set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status); |
| 316 | set_default_nan_mode(1, &env->vfp.standard_fp_status); |
| 317 | set_float_detect_tininess(float_tininess_before_rounding, |
| 318 | &env->vfp.fp_status); |
| 319 | set_float_detect_tininess(float_tininess_before_rounding, |
| 320 | &env->vfp.standard_fp_status); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 321 | tlb_flush(env, 1); |
| 322 | } |
| 323 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 324 | static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 325 | { |
| 326 | int nregs; |
| 327 | |
| 328 | /* VFP data registers are always little-endian. */ |
| 329 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; |
| 330 | if (reg < nregs) { |
| 331 | stfq_le_p(buf, env->vfp.regs[reg]); |
| 332 | return 8; |
| 333 | } |
| 334 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
| 335 | /* Aliases for Q regs. */ |
| 336 | nregs += 16; |
| 337 | if (reg < nregs) { |
| 338 | stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]); |
| 339 | stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]); |
| 340 | return 16; |
| 341 | } |
| 342 | } |
| 343 | switch (reg - nregs) { |
| 344 | case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4; |
| 345 | case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4; |
| 346 | case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4; |
| 347 | } |
| 348 | return 0; |
| 349 | } |
| 350 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 351 | static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 352 | { |
| 353 | int nregs; |
| 354 | |
| 355 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; |
| 356 | if (reg < nregs) { |
| 357 | env->vfp.regs[reg] = ldfq_le_p(buf); |
| 358 | return 8; |
| 359 | } |
| 360 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
| 361 | nregs += 16; |
| 362 | if (reg < nregs) { |
| 363 | env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf); |
| 364 | env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8); |
| 365 | return 16; |
| 366 | } |
| 367 | } |
| 368 | switch (reg - nregs) { |
| 369 | case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4; |
| 370 | case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 371 | case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 372 | } |
| 373 | return 0; |
| 374 | } |
| 375 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 376 | CPUARMState *cpu_arm_init(const char *cpu_model) |
| 377 | { |
| 378 | CPUARMState *env; |
| 379 | uint32_t id; |
| 380 | static int inited = 0; |
| 381 | |
| 382 | id = cpu_arm_find_by_name(cpu_model); |
| 383 | if (id == 0) |
| 384 | return NULL; |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 385 | env = g_malloc0(sizeof(CPUARMState)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 386 | cpu_exec_init(env); |
| 387 | if (!inited) { |
| 388 | inited = 1; |
| 389 | arm_translate_init(); |
| 390 | } |
| 391 | |
| 392 | env->cpu_model_str = cpu_model; |
| 393 | env->cp15.c0_cpuid = id; |
| 394 | cpu_reset(env); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 395 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
| 396 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, |
| 397 | 51, "arm-neon.xml", 0); |
| 398 | } else if (arm_feature(env, ARM_FEATURE_VFP3)) { |
| 399 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, |
| 400 | 35, "arm-vfp3.xml", 0); |
| 401 | } else if (arm_feature(env, ARM_FEATURE_VFP)) { |
| 402 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, |
| 403 | 19, "arm-vfp.xml", 0); |
| 404 | } |
| 405 | qemu_init_vcpu(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 406 | return env; |
| 407 | } |
| 408 | |
| 409 | struct arm_cpu_t { |
| 410 | uint32_t id; |
| 411 | const char *name; |
| 412 | }; |
| 413 | |
| 414 | static const struct arm_cpu_t arm_cpu_names[] = { |
| 415 | { ARM_CPUID_ARM926, "arm926"}, |
| 416 | { ARM_CPUID_ARM946, "arm946"}, |
| 417 | { ARM_CPUID_ARM1026, "arm1026"}, |
| 418 | { ARM_CPUID_ARM1136, "arm1136"}, |
| 419 | { ARM_CPUID_ARM1136_R2, "arm1136-r2"}, |
| 420 | { ARM_CPUID_ARM11MPCORE, "arm11mpcore"}, |
| 421 | { ARM_CPUID_CORTEXM3, "cortex-m3"}, |
| 422 | { ARM_CPUID_CORTEXA8, "cortex-a8"}, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 423 | { ARM_CPUID_CORTEXA8_R2, "cortex-a8-r2"}, |
| 424 | { ARM_CPUID_CORTEXA9, "cortex-a9"}, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 425 | { ARM_CPUID_TI925T, "ti925t" }, |
| 426 | { ARM_CPUID_PXA250, "pxa250" }, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 427 | { ARM_CPUID_SA1100, "sa1100" }, |
| 428 | { ARM_CPUID_SA1110, "sa1110" }, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 429 | { ARM_CPUID_PXA255, "pxa255" }, |
| 430 | { ARM_CPUID_PXA260, "pxa260" }, |
| 431 | { ARM_CPUID_PXA261, "pxa261" }, |
| 432 | { ARM_CPUID_PXA262, "pxa262" }, |
| 433 | { ARM_CPUID_PXA270, "pxa270" }, |
| 434 | { ARM_CPUID_PXA270_A0, "pxa270-a0" }, |
| 435 | { ARM_CPUID_PXA270_A1, "pxa270-a1" }, |
| 436 | { ARM_CPUID_PXA270_B0, "pxa270-b0" }, |
| 437 | { ARM_CPUID_PXA270_B1, "pxa270-b1" }, |
| 438 | { ARM_CPUID_PXA270_C0, "pxa270-c0" }, |
| 439 | { ARM_CPUID_PXA270_C5, "pxa270-c5" }, |
| 440 | { ARM_CPUID_ANY, "any"}, |
| 441 | { 0, NULL} |
| 442 | }; |
| 443 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 444 | void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 445 | { |
| 446 | int i; |
| 447 | |
| 448 | (*cpu_fprintf)(f, "Available CPUs:\n"); |
| 449 | for (i = 0; arm_cpu_names[i].name; i++) { |
| 450 | (*cpu_fprintf)(f, " %s\n", arm_cpu_names[i].name); |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* return 0 if not found */ |
| 455 | static uint32_t cpu_arm_find_by_name(const char *name) |
| 456 | { |
| 457 | int i; |
| 458 | uint32_t id; |
| 459 | |
| 460 | id = 0; |
| 461 | for (i = 0; arm_cpu_names[i].name; i++) { |
| 462 | if (strcmp(name, arm_cpu_names[i].name) == 0) { |
| 463 | id = arm_cpu_names[i].id; |
| 464 | break; |
| 465 | } |
| 466 | } |
| 467 | return id; |
| 468 | } |
| 469 | |
| 470 | void cpu_arm_close(CPUARMState *env) |
| 471 | { |
| 472 | free(env); |
| 473 | } |
| 474 | |
| 475 | uint32_t cpsr_read(CPUARMState *env) |
| 476 | { |
| 477 | int ZF; |
| 478 | ZF = (env->ZF == 0); |
| 479 | return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) | |
| 480 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) |
| 481 | | (env->thumb << 5) | ((env->condexec_bits & 3) << 25) |
| 482 | | ((env->condexec_bits & 0xfc) << 8) |
| 483 | | (env->GE << 16); |
| 484 | } |
| 485 | |
| 486 | void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) |
| 487 | { |
| 488 | if (mask & CPSR_NZCV) { |
| 489 | env->ZF = (~val) & CPSR_Z; |
| 490 | env->NF = val; |
| 491 | env->CF = (val >> 29) & 1; |
| 492 | env->VF = (val << 3) & 0x80000000; |
| 493 | } |
| 494 | if (mask & CPSR_Q) |
| 495 | env->QF = ((val & CPSR_Q) != 0); |
| 496 | if (mask & CPSR_T) |
| 497 | env->thumb = ((val & CPSR_T) != 0); |
| 498 | if (mask & CPSR_IT_0_1) { |
| 499 | env->condexec_bits &= ~3; |
| 500 | env->condexec_bits |= (val >> 25) & 3; |
| 501 | } |
| 502 | if (mask & CPSR_IT_2_7) { |
| 503 | env->condexec_bits &= 3; |
| 504 | env->condexec_bits |= (val >> 8) & 0xfc; |
| 505 | } |
| 506 | if (mask & CPSR_GE) { |
| 507 | env->GE = (val >> 16) & 0xf; |
| 508 | } |
| 509 | |
| 510 | if ((env->uncached_cpsr ^ val) & mask & CPSR_M) { |
| 511 | switch_mode(env, val & CPSR_M); |
| 512 | } |
| 513 | mask &= ~CACHED_CPSR_BITS; |
| 514 | env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask); |
| 515 | } |
| 516 | |
| 517 | /* Sign/zero extend */ |
| 518 | uint32_t HELPER(sxtb16)(uint32_t x) |
| 519 | { |
| 520 | uint32_t res; |
| 521 | res = (uint16_t)(int8_t)x; |
| 522 | res |= (uint32_t)(int8_t)(x >> 16) << 16; |
| 523 | return res; |
| 524 | } |
| 525 | |
| 526 | uint32_t HELPER(uxtb16)(uint32_t x) |
| 527 | { |
| 528 | uint32_t res; |
| 529 | res = (uint16_t)(uint8_t)x; |
| 530 | res |= (uint32_t)(uint8_t)(x >> 16) << 16; |
| 531 | return res; |
| 532 | } |
| 533 | |
| 534 | uint32_t HELPER(clz)(uint32_t x) |
| 535 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 536 | return clz32(x); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | int32_t HELPER(sdiv)(int32_t num, int32_t den) |
| 540 | { |
| 541 | if (den == 0) |
| 542 | return 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 543 | if (num == INT_MIN && den == -1) |
| 544 | return INT_MIN; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 545 | return num / den; |
| 546 | } |
| 547 | |
| 548 | uint32_t HELPER(udiv)(uint32_t num, uint32_t den) |
| 549 | { |
| 550 | if (den == 0) |
| 551 | return 0; |
| 552 | return num / den; |
| 553 | } |
| 554 | |
| 555 | uint32_t HELPER(rbit)(uint32_t x) |
| 556 | { |
| 557 | x = ((x & 0xff000000) >> 24) |
| 558 | | ((x & 0x00ff0000) >> 8) |
| 559 | | ((x & 0x0000ff00) << 8) |
| 560 | | ((x & 0x000000ff) << 24); |
| 561 | x = ((x & 0xf0f0f0f0) >> 4) |
| 562 | | ((x & 0x0f0f0f0f) << 4); |
| 563 | x = ((x & 0x88888888) >> 3) |
| 564 | | ((x & 0x44444444) >> 1) |
| 565 | | ((x & 0x22222222) << 1) |
| 566 | | ((x & 0x11111111) << 3); |
| 567 | return x; |
| 568 | } |
| 569 | |
| 570 | uint32_t HELPER(abs)(uint32_t x) |
| 571 | { |
| 572 | return ((int32_t)x < 0) ? -x : x; |
| 573 | } |
| 574 | |
| 575 | #if defined(CONFIG_USER_ONLY) |
| 576 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 577 | void do_interrupt (CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 578 | { |
| 579 | env->exception_index = -1; |
| 580 | } |
| 581 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 582 | int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 583 | int mmu_idx, int is_softmmu) |
| 584 | { |
| 585 | if (rw == 2) { |
| 586 | env->exception_index = EXCP_PREFETCH_ABORT; |
| 587 | env->cp15.c6_insn = address; |
| 588 | } else { |
| 589 | env->exception_index = EXCP_DATA_ABORT; |
| 590 | env->cp15.c6_data = address; |
| 591 | } |
| 592 | return 1; |
| 593 | } |
| 594 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 595 | /* These should probably raise undefined insn exceptions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 596 | void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 597 | { |
| 598 | cpu_abort(env, "cp15 insn %08x\n", insn); |
| 599 | } |
| 600 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 601 | uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 602 | { |
| 603 | cpu_abort(env, "cp15 insn %08x\n", insn); |
| 604 | return 0; |
| 605 | } |
| 606 | |
| 607 | /* These should probably raise undefined insn exceptions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 608 | void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 609 | { |
| 610 | cpu_abort(env, "v7m_mrs %d\n", reg); |
| 611 | } |
| 612 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 613 | uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 614 | { |
| 615 | cpu_abort(env, "v7m_mrs %d\n", reg); |
| 616 | return 0; |
| 617 | } |
| 618 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 619 | void switch_mode(CPUARMState *env, int mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 620 | { |
| 621 | if (mode != ARM_CPU_MODE_USR) |
| 622 | cpu_abort(env, "Tried to switch out of user mode\n"); |
| 623 | } |
| 624 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 625 | void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 626 | { |
| 627 | cpu_abort(env, "banked r13 write\n"); |
| 628 | } |
| 629 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 630 | uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 631 | { |
| 632 | cpu_abort(env, "banked r13 read\n"); |
| 633 | return 0; |
| 634 | } |
| 635 | |
| 636 | #else |
| 637 | |
| 638 | extern int semihosting_enabled; |
| 639 | |
| 640 | /* Map CPU modes onto saved register banks. */ |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 641 | static inline int bank_number (CPUARMState *env, int mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 642 | { |
| 643 | switch (mode) { |
| 644 | case ARM_CPU_MODE_USR: |
| 645 | case ARM_CPU_MODE_SYS: |
| 646 | return 0; |
| 647 | case ARM_CPU_MODE_SVC: |
| 648 | return 1; |
| 649 | case ARM_CPU_MODE_ABT: |
| 650 | return 2; |
| 651 | case ARM_CPU_MODE_UND: |
| 652 | return 3; |
| 653 | case ARM_CPU_MODE_IRQ: |
| 654 | return 4; |
| 655 | case ARM_CPU_MODE_FIQ: |
| 656 | return 5; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 657 | case ARM_CPU_MODE_SMC: |
| 658 | return 6; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 659 | } |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 660 | cpu_abort(env, "Bad mode %x\n", mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 661 | return -1; |
| 662 | } |
| 663 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 664 | void switch_mode(CPUARMState *env, int mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 665 | { |
| 666 | int old_mode; |
| 667 | int i; |
| 668 | |
| 669 | old_mode = env->uncached_cpsr & CPSR_M; |
| 670 | if (mode == old_mode) |
| 671 | return; |
| 672 | |
| 673 | if (old_mode == ARM_CPU_MODE_FIQ) { |
| 674 | memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t)); |
| 675 | memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t)); |
| 676 | } else if (mode == ARM_CPU_MODE_FIQ) { |
| 677 | memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t)); |
| 678 | memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t)); |
| 679 | } |
| 680 | |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 681 | i = bank_number(env, old_mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 682 | env->banked_r13[i] = env->regs[13]; |
| 683 | env->banked_r14[i] = env->regs[14]; |
| 684 | env->banked_spsr[i] = env->spsr; |
| 685 | |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 686 | i = bank_number(env, mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 687 | env->regs[13] = env->banked_r13[i]; |
| 688 | env->regs[14] = env->banked_r14[i]; |
| 689 | env->spsr = env->banked_spsr[i]; |
| 690 | } |
| 691 | |
| 692 | static void v7m_push(CPUARMState *env, uint32_t val) |
| 693 | { |
| 694 | env->regs[13] -= 4; |
| 695 | stl_phys(env->regs[13], val); |
| 696 | } |
| 697 | |
| 698 | static uint32_t v7m_pop(CPUARMState *env) |
| 699 | { |
| 700 | uint32_t val; |
| 701 | val = ldl_phys(env->regs[13]); |
| 702 | env->regs[13] += 4; |
| 703 | return val; |
| 704 | } |
| 705 | |
| 706 | /* Switch to V7M main or process stack pointer. */ |
| 707 | static void switch_v7m_sp(CPUARMState *env, int process) |
| 708 | { |
| 709 | uint32_t tmp; |
| 710 | if (env->v7m.current_sp != process) { |
| 711 | tmp = env->v7m.other_sp; |
| 712 | env->v7m.other_sp = env->regs[13]; |
| 713 | env->regs[13] = tmp; |
| 714 | env->v7m.current_sp = process; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | static void do_v7m_exception_exit(CPUARMState *env) |
| 719 | { |
| 720 | uint32_t type; |
| 721 | uint32_t xpsr; |
| 722 | |
| 723 | type = env->regs[15]; |
| 724 | if (env->v7m.exception != 0) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 725 | armv7m_nvic_complete_irq(env->nvic, env->v7m.exception); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 726 | |
| 727 | /* Switch to the target stack. */ |
| 728 | switch_v7m_sp(env, (type & 4) != 0); |
| 729 | /* Pop registers. */ |
| 730 | env->regs[0] = v7m_pop(env); |
| 731 | env->regs[1] = v7m_pop(env); |
| 732 | env->regs[2] = v7m_pop(env); |
| 733 | env->regs[3] = v7m_pop(env); |
| 734 | env->regs[12] = v7m_pop(env); |
| 735 | env->regs[14] = v7m_pop(env); |
| 736 | env->regs[15] = v7m_pop(env); |
| 737 | xpsr = v7m_pop(env); |
| 738 | xpsr_write(env, xpsr, 0xfffffdff); |
| 739 | /* Undo stack alignment. */ |
| 740 | if (xpsr & 0x200) |
| 741 | env->regs[13] |= 4; |
| 742 | /* ??? The exception return type specifies Thread/Handler mode. However |
| 743 | this is also implied by the xPSR value. Not sure what to do |
| 744 | if there is a mismatch. */ |
| 745 | /* ??? Likewise for mismatches between the CONTROL register and the stack |
| 746 | pointer. */ |
| 747 | } |
| 748 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 749 | static void do_interrupt_v7m(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 750 | { |
| 751 | uint32_t xpsr = xpsr_read(env); |
| 752 | uint32_t lr; |
| 753 | uint32_t addr; |
| 754 | |
| 755 | lr = 0xfffffff1; |
| 756 | if (env->v7m.current_sp) |
| 757 | lr |= 4; |
| 758 | if (env->v7m.exception == 0) |
| 759 | lr |= 8; |
| 760 | |
| 761 | /* For exceptions we just mark as pending on the NVIC, and let that |
| 762 | handle it. */ |
| 763 | /* TODO: Need to escalate if the current priority is higher than the |
| 764 | one we're raising. */ |
| 765 | switch (env->exception_index) { |
| 766 | case EXCP_UDEF: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 767 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 768 | return; |
| 769 | case EXCP_SWI: |
| 770 | env->regs[15] += 2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 771 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 772 | return; |
| 773 | case EXCP_PREFETCH_ABORT: |
| 774 | case EXCP_DATA_ABORT: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 775 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 776 | return; |
| 777 | case EXCP_BKPT: |
| 778 | if (semihosting_enabled) { |
| 779 | int nr; |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 780 | nr = cpu_lduw_code(env, env->regs[15]) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 781 | if (nr == 0xab) { |
| 782 | env->regs[15] += 2; |
| 783 | env->regs[0] = do_arm_semihosting(env); |
| 784 | return; |
| 785 | } |
| 786 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 787 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 788 | return; |
| 789 | case EXCP_IRQ: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 790 | env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 791 | break; |
| 792 | case EXCP_EXCEPTION_EXIT: |
| 793 | do_v7m_exception_exit(env); |
| 794 | return; |
| 795 | default: |
| 796 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); |
| 797 | return; /* Never happens. Keep compiler happy. */ |
| 798 | } |
| 799 | |
| 800 | /* Align stack pointer. */ |
| 801 | /* ??? Should only do this if Configuration Control Register |
| 802 | STACKALIGN bit is set. */ |
| 803 | if (env->regs[13] & 4) { |
| 804 | env->regs[13] -= 4; |
| 805 | xpsr |= 0x200; |
| 806 | } |
| 807 | /* Switch to the handler mode. */ |
| 808 | v7m_push(env, xpsr); |
| 809 | v7m_push(env, env->regs[15]); |
| 810 | v7m_push(env, env->regs[14]); |
| 811 | v7m_push(env, env->regs[12]); |
| 812 | v7m_push(env, env->regs[3]); |
| 813 | v7m_push(env, env->regs[2]); |
| 814 | v7m_push(env, env->regs[1]); |
| 815 | v7m_push(env, env->regs[0]); |
| 816 | switch_v7m_sp(env, 0); |
| 817 | env->uncached_cpsr &= ~CPSR_IT; |
| 818 | env->regs[14] = lr; |
| 819 | addr = ldl_phys(env->v7m.vecbase + env->v7m.exception * 4); |
| 820 | env->regs[15] = addr & 0xfffffffe; |
| 821 | env->thumb = addr & 1; |
| 822 | } |
| 823 | |
| 824 | /* Handle a CPU exception. */ |
| 825 | void do_interrupt(CPUARMState *env) |
| 826 | { |
| 827 | uint32_t addr; |
| 828 | uint32_t mask; |
| 829 | int new_mode; |
| 830 | uint32_t offset; |
| 831 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 832 | if (IS_M(env)) { |
| 833 | do_interrupt_v7m(env); |
| 834 | return; |
| 835 | } |
| 836 | /* TODO: Vectored interrupt controller. */ |
| 837 | switch (env->exception_index) { |
| 838 | case EXCP_UDEF: |
| 839 | new_mode = ARM_CPU_MODE_UND; |
| 840 | addr = 0x04; |
| 841 | mask = CPSR_I; |
| 842 | if (env->thumb) |
| 843 | offset = 2; |
| 844 | else |
| 845 | offset = 4; |
| 846 | break; |
| 847 | case EXCP_SWI: |
| 848 | if (semihosting_enabled) { |
| 849 | /* Check for semihosting interrupt. */ |
| 850 | if (env->thumb) { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 851 | mask = cpu_lduw_code(env, env->regs[15] - 2) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 852 | } else { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 853 | mask = cpu_ldl_code(env, env->regs[15] - 4) & 0xffffff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 854 | } |
| 855 | /* Only intercept calls from privileged modes, to provide some |
| 856 | semblance of security. */ |
| 857 | if (((mask == 0x123456 && !env->thumb) |
| 858 | || (mask == 0xab && env->thumb)) |
| 859 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { |
| 860 | env->regs[0] = do_arm_semihosting(env); |
| 861 | return; |
| 862 | } |
| 863 | } |
| 864 | new_mode = ARM_CPU_MODE_SVC; |
| 865 | addr = 0x08; |
| 866 | mask = CPSR_I; |
| 867 | /* The PC already points to the next instruction. */ |
| 868 | offset = 0; |
| 869 | break; |
| 870 | case EXCP_BKPT: |
| 871 | /* See if this is a semihosting syscall. */ |
| 872 | if (env->thumb && semihosting_enabled) { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 873 | mask = cpu_lduw_code(env, env->regs[15]) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 874 | if (mask == 0xab |
| 875 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { |
| 876 | env->regs[15] += 2; |
| 877 | env->regs[0] = do_arm_semihosting(env); |
| 878 | return; |
| 879 | } |
| 880 | } |
| 881 | /* Fall through to prefetch abort. */ |
| 882 | case EXCP_PREFETCH_ABORT: |
| 883 | new_mode = ARM_CPU_MODE_ABT; |
| 884 | addr = 0x0c; |
| 885 | mask = CPSR_A | CPSR_I; |
| 886 | offset = 4; |
| 887 | break; |
| 888 | case EXCP_DATA_ABORT: |
| 889 | new_mode = ARM_CPU_MODE_ABT; |
| 890 | addr = 0x10; |
| 891 | mask = CPSR_A | CPSR_I; |
| 892 | offset = 8; |
| 893 | break; |
| 894 | case EXCP_IRQ: |
| 895 | new_mode = ARM_CPU_MODE_IRQ; |
| 896 | addr = 0x18; |
| 897 | /* Disable IRQ and imprecise data aborts. */ |
| 898 | mask = CPSR_A | CPSR_I; |
| 899 | offset = 4; |
| 900 | break; |
| 901 | case EXCP_FIQ: |
| 902 | new_mode = ARM_CPU_MODE_FIQ; |
| 903 | addr = 0x1c; |
| 904 | /* Disable FIQ, IRQ and imprecise data aborts. */ |
| 905 | mask = CPSR_A | CPSR_I | CPSR_F; |
| 906 | offset = 4; |
| 907 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 908 | case EXCP_SMC: |
| 909 | if (semihosting_enabled) { |
| 910 | cpu_abort(env, "SMC handling under semihosting not implemented\n"); |
| 911 | return; |
| 912 | } |
| 913 | if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_SMC) { |
| 914 | env->cp15.c1_secfg &= ~1; |
| 915 | } |
| 916 | offset = env->thumb ? 2 : 0; |
| 917 | new_mode = ARM_CPU_MODE_SMC; |
| 918 | addr = 0x08; |
| 919 | mask = CPSR_A | CPSR_I | CPSR_F; |
| 920 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 921 | default: |
| 922 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); |
| 923 | return; /* Never happens. Keep compiler happy. */ |
| 924 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 925 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 926 | if (new_mode == ARM_CPU_MODE_SMC || |
| 927 | (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_SMC) { |
| 928 | addr += env->cp15.c12_mvbar; |
| 929 | } else { |
| 930 | if (env->cp15.c1_sys & (1 << 13)) { |
| 931 | addr += 0xffff0000; |
| 932 | } else { |
| 933 | addr += env->cp15.c12_vbar; |
| 934 | } |
| 935 | } |
| 936 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 937 | /* High vectors. */ |
| 938 | if (env->cp15.c1_sys & (1 << 13)) { |
| 939 | addr += 0xffff0000; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 940 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 941 | } |
| 942 | switch_mode (env, new_mode); |
| 943 | env->spsr = cpsr_read(env); |
| 944 | /* Clear IT bits. */ |
| 945 | env->condexec_bits = 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 946 | /* Switch to the new mode, and to the correct instruction set. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 947 | env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode; |
| 948 | env->uncached_cpsr |= mask; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 949 | /* this is a lie, as the was no c1_sys on V4T/V5, but who cares |
| 950 | * and we should just guard the thumb mode on V4 */ |
| 951 | if (arm_feature(env, ARM_FEATURE_V4T)) { |
| 952 | env->thumb = (env->cp15.c1_sys & (1 << 30)) != 0; |
| 953 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 954 | env->regs[14] = env->regs[15] + offset; |
| 955 | env->regs[15] = addr; |
| 956 | env->interrupt_request |= CPU_INTERRUPT_EXITTB; |
| 957 | } |
| 958 | |
| 959 | /* Check section/page access permissions. |
| 960 | Returns the page protection flags, or zero if the access is not |
| 961 | permitted. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 962 | static inline int check_ap(CPUARMState *env, int ap, int domain, int access_type, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 963 | int is_user) |
| 964 | { |
| 965 | int prot_ro; |
| 966 | |
| 967 | if (domain == 3) |
| 968 | return PAGE_READ | PAGE_WRITE; |
| 969 | |
| 970 | if (access_type == 1) |
| 971 | prot_ro = 0; |
| 972 | else |
| 973 | prot_ro = PAGE_READ; |
| 974 | |
| 975 | switch (ap) { |
| 976 | case 0: |
| 977 | if (access_type == 1) |
| 978 | return 0; |
| 979 | switch ((env->cp15.c1_sys >> 8) & 3) { |
| 980 | case 1: |
| 981 | return is_user ? 0 : PAGE_READ; |
| 982 | case 2: |
| 983 | return PAGE_READ; |
| 984 | default: |
| 985 | return 0; |
| 986 | } |
| 987 | case 1: |
| 988 | return is_user ? 0 : PAGE_READ | PAGE_WRITE; |
| 989 | case 2: |
| 990 | if (is_user) |
| 991 | return prot_ro; |
| 992 | else |
| 993 | return PAGE_READ | PAGE_WRITE; |
| 994 | case 3: |
| 995 | return PAGE_READ | PAGE_WRITE; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 996 | case 4: /* Reserved. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 997 | return 0; |
| 998 | case 5: |
| 999 | return is_user ? 0 : prot_ro; |
| 1000 | case 6: |
| 1001 | return prot_ro; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1002 | case 7: |
| 1003 | if (!arm_feature (env, ARM_FEATURE_V7)) |
| 1004 | return 0; |
| 1005 | return prot_ro; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1006 | default: |
| 1007 | abort(); |
| 1008 | } |
| 1009 | } |
| 1010 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1011 | static uint32_t get_level1_table_address(CPUARMState *env, uint32_t address) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1012 | { |
| 1013 | uint32_t table; |
| 1014 | |
| 1015 | if (address & env->cp15.c2_mask) |
| 1016 | table = env->cp15.c2_base1 & 0xffffc000; |
| 1017 | else |
| 1018 | table = env->cp15.c2_base0 & env->cp15.c2_base_mask; |
| 1019 | |
| 1020 | table |= (address >> 18) & 0x3ffc; |
| 1021 | return table; |
| 1022 | } |
| 1023 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1024 | static int get_phys_addr_v5(CPUARMState *env, uint32_t address, int access_type, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1025 | int is_user, uint32_t *phys_ptr, int *prot, |
| 1026 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1027 | { |
| 1028 | int code; |
| 1029 | uint32_t table; |
| 1030 | uint32_t desc; |
| 1031 | int type; |
| 1032 | int ap; |
| 1033 | int domain; |
| 1034 | uint32_t phys_addr; |
| 1035 | |
| 1036 | /* Pagetable walk. */ |
| 1037 | /* Lookup l1 descriptor. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1038 | table = get_level1_table_address(env, address); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1039 | desc = ldl_phys(table); |
| 1040 | type = (desc & 3); |
| 1041 | domain = (env->cp15.c3 >> ((desc >> 4) & 0x1e)) & 3; |
| 1042 | if (type == 0) { |
| 1043 | /* Section translation fault. */ |
| 1044 | code = 5; |
| 1045 | goto do_fault; |
| 1046 | } |
| 1047 | if (domain == 0 || domain == 2) { |
| 1048 | if (type == 2) |
| 1049 | code = 9; /* Section domain fault. */ |
| 1050 | else |
| 1051 | code = 11; /* Page domain fault. */ |
| 1052 | goto do_fault; |
| 1053 | } |
| 1054 | if (type == 2) { |
| 1055 | /* 1Mb section. */ |
| 1056 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); |
| 1057 | ap = (desc >> 10) & 3; |
| 1058 | code = 13; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1059 | *page_size = 1024 * 1024; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1060 | } else { |
| 1061 | /* Lookup l2 entry. */ |
| 1062 | if (type == 1) { |
| 1063 | /* Coarse pagetable. */ |
| 1064 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); |
| 1065 | } else { |
| 1066 | /* Fine pagetable. */ |
| 1067 | table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); |
| 1068 | } |
| 1069 | desc = ldl_phys(table); |
| 1070 | switch (desc & 3) { |
| 1071 | case 0: /* Page translation fault. */ |
| 1072 | code = 7; |
| 1073 | goto do_fault; |
| 1074 | case 1: /* 64k page. */ |
| 1075 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); |
| 1076 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1077 | *page_size = 0x10000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1078 | break; |
| 1079 | case 2: /* 4k page. */ |
| 1080 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1081 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1082 | *page_size = 0x1000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1083 | break; |
| 1084 | case 3: /* 1k page. */ |
| 1085 | if (type == 1) { |
| 1086 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1087 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1088 | } else { |
| 1089 | /* Page translation fault. */ |
| 1090 | code = 7; |
| 1091 | goto do_fault; |
| 1092 | } |
| 1093 | } else { |
| 1094 | phys_addr = (desc & 0xfffffc00) | (address & 0x3ff); |
| 1095 | } |
| 1096 | ap = (desc >> 4) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1097 | *page_size = 0x400; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1098 | break; |
| 1099 | default: |
| 1100 | /* Never happens, but compiler isn't smart enough to tell. */ |
| 1101 | abort(); |
| 1102 | } |
| 1103 | code = 15; |
| 1104 | } |
| 1105 | *prot = check_ap(env, ap, domain, access_type, is_user); |
| 1106 | if (!*prot) { |
| 1107 | /* Access permission fault. */ |
| 1108 | goto do_fault; |
| 1109 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1110 | *prot |= PAGE_EXEC; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1111 | *phys_ptr = phys_addr; |
| 1112 | return 0; |
| 1113 | do_fault: |
| 1114 | return code | (domain << 4); |
| 1115 | } |
| 1116 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1117 | static int get_phys_addr_v6(CPUARMState *env, uint32_t address, int access_type, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1118 | int is_user, uint32_t *phys_ptr, int *prot, |
| 1119 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1120 | { |
| 1121 | int code; |
| 1122 | uint32_t table; |
| 1123 | uint32_t desc; |
| 1124 | uint32_t xn; |
| 1125 | int type; |
| 1126 | int ap; |
| 1127 | int domain; |
| 1128 | uint32_t phys_addr; |
| 1129 | |
| 1130 | /* Pagetable walk. */ |
| 1131 | /* Lookup l1 descriptor. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1132 | table = get_level1_table_address(env, address); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1133 | desc = ldl_phys(table); |
| 1134 | type = (desc & 3); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1135 | if (type == 0 || type == 3) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1136 | /* Section translation fault. */ |
| 1137 | code = 5; |
| 1138 | domain = 0; |
| 1139 | goto do_fault; |
| 1140 | } else if (type == 2 && (desc & (1 << 18))) { |
| 1141 | /* Supersection. */ |
| 1142 | domain = 0; |
| 1143 | } else { |
| 1144 | /* Section or page. */ |
| 1145 | domain = (desc >> 4) & 0x1e; |
| 1146 | } |
| 1147 | domain = (env->cp15.c3 >> domain) & 3; |
| 1148 | if (domain == 0 || domain == 2) { |
| 1149 | if (type == 2) |
| 1150 | code = 9; /* Section domain fault. */ |
| 1151 | else |
| 1152 | code = 11; /* Page domain fault. */ |
| 1153 | goto do_fault; |
| 1154 | } |
| 1155 | if (type == 2) { |
| 1156 | if (desc & (1 << 18)) { |
| 1157 | /* Supersection. */ |
| 1158 | phys_addr = (desc & 0xff000000) | (address & 0x00ffffff); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1159 | *page_size = 0x1000000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1160 | } else { |
| 1161 | /* Section. */ |
| 1162 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1163 | *page_size = 0x100000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1164 | } |
| 1165 | ap = ((desc >> 10) & 3) | ((desc >> 13) & 4); |
| 1166 | xn = desc & (1 << 4); |
| 1167 | code = 13; |
| 1168 | } else { |
| 1169 | /* Lookup l2 entry. */ |
| 1170 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); |
| 1171 | desc = ldl_phys(table); |
| 1172 | ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); |
| 1173 | switch (desc & 3) { |
| 1174 | case 0: /* Page translation fault. */ |
| 1175 | code = 7; |
| 1176 | goto do_fault; |
| 1177 | case 1: /* 64k page. */ |
| 1178 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); |
| 1179 | xn = desc & (1 << 15); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1180 | *page_size = 0x10000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1181 | break; |
| 1182 | case 2: case 3: /* 4k page. */ |
| 1183 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1184 | xn = desc & 1; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1185 | *page_size = 0x1000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1186 | break; |
| 1187 | default: |
| 1188 | /* Never happens, but compiler isn't smart enough to tell. */ |
| 1189 | abort(); |
| 1190 | } |
| 1191 | code = 15; |
| 1192 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1193 | if (domain == 3) { |
| 1194 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 1195 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1196 | if (xn && access_type == 2) |
| 1197 | goto do_fault; |
| 1198 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1199 | /* The simplified model uses AP[0] as an access control bit. */ |
| 1200 | if ((env->cp15.c1_sys & (1 << 29)) && (ap & 1) == 0) { |
| 1201 | /* Access flag fault. */ |
| 1202 | code = (code == 15) ? 6 : 3; |
| 1203 | goto do_fault; |
| 1204 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1205 | *prot = check_ap(env, ap, domain, access_type, is_user); |
| 1206 | if (!*prot) { |
| 1207 | /* Access permission fault. */ |
| 1208 | goto do_fault; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1209 | } |
| 1210 | if (!xn) { |
| 1211 | *prot |= PAGE_EXEC; |
| 1212 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1213 | } |
| 1214 | *phys_ptr = phys_addr; |
| 1215 | return 0; |
| 1216 | do_fault: |
| 1217 | return code | (domain << 4); |
| 1218 | } |
| 1219 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1220 | static int get_phys_addr_mpu(CPUARMState *env, uint32_t address, int access_type, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1221 | int is_user, uint32_t *phys_ptr, int *prot) |
| 1222 | { |
| 1223 | int n; |
| 1224 | uint32_t mask; |
| 1225 | uint32_t base; |
| 1226 | |
| 1227 | *phys_ptr = address; |
| 1228 | for (n = 7; n >= 0; n--) { |
| 1229 | base = env->cp15.c6_region[n]; |
| 1230 | if ((base & 1) == 0) |
| 1231 | continue; |
| 1232 | mask = 1 << ((base >> 1) & 0x1f); |
| 1233 | /* Keep this shift separate from the above to avoid an |
| 1234 | (undefined) << 32. */ |
| 1235 | mask = (mask << 1) - 1; |
| 1236 | if (((base ^ address) & ~mask) == 0) |
| 1237 | break; |
| 1238 | } |
| 1239 | if (n < 0) |
| 1240 | return 2; |
| 1241 | |
| 1242 | if (access_type == 2) { |
| 1243 | mask = env->cp15.c5_insn; |
| 1244 | } else { |
| 1245 | mask = env->cp15.c5_data; |
| 1246 | } |
| 1247 | mask = (mask >> (n * 4)) & 0xf; |
| 1248 | switch (mask) { |
| 1249 | case 0: |
| 1250 | return 1; |
| 1251 | case 1: |
| 1252 | if (is_user) |
| 1253 | return 1; |
| 1254 | *prot = PAGE_READ | PAGE_WRITE; |
| 1255 | break; |
| 1256 | case 2: |
| 1257 | *prot = PAGE_READ; |
| 1258 | if (!is_user) |
| 1259 | *prot |= PAGE_WRITE; |
| 1260 | break; |
| 1261 | case 3: |
| 1262 | *prot = PAGE_READ | PAGE_WRITE; |
| 1263 | break; |
| 1264 | case 5: |
| 1265 | if (is_user) |
| 1266 | return 1; |
| 1267 | *prot = PAGE_READ; |
| 1268 | break; |
| 1269 | case 6: |
| 1270 | *prot = PAGE_READ; |
| 1271 | break; |
| 1272 | default: |
| 1273 | /* Bad permission. */ |
| 1274 | return 1; |
| 1275 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1276 | *prot |= PAGE_EXEC; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1277 | return 0; |
| 1278 | } |
| 1279 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1280 | #ifdef CONFIG_GLES2 |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1281 | int get_phys_addr(CPUARMState *env, uint32_t address, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1282 | int access_type, int is_user, |
| 1283 | uint32_t *phys_ptr, int *prot, |
| 1284 | target_ulong *page_size); |
| 1285 | #else |
| 1286 | static |
| 1287 | #endif |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1288 | int get_phys_addr(CPUARMState *env, uint32_t address, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1289 | int access_type, int is_user, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1290 | uint32_t *phys_ptr, int *prot, |
| 1291 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1292 | { |
| 1293 | /* Fast Context Switch Extension. */ |
| 1294 | if (address < 0x02000000) |
| 1295 | address += env->cp15.c13_fcse; |
| 1296 | |
| 1297 | if ((env->cp15.c1_sys & 1) == 0) { |
| 1298 | /* MMU/MPU disabled. */ |
| 1299 | *phys_ptr = address; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1300 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 1301 | *page_size = TARGET_PAGE_SIZE; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1302 | return 0; |
| 1303 | } else if (arm_feature(env, ARM_FEATURE_MPU)) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1304 | *page_size = TARGET_PAGE_SIZE; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1305 | return get_phys_addr_mpu(env, address, access_type, is_user, phys_ptr, |
| 1306 | prot); |
| 1307 | } else if (env->cp15.c1_sys & (1 << 23)) { |
| 1308 | return get_phys_addr_v6(env, address, access_type, is_user, phys_ptr, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1309 | prot, page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1310 | } else { |
| 1311 | return get_phys_addr_v5(env, address, access_type, is_user, phys_ptr, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1312 | prot, page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1313 | } |
| 1314 | } |
| 1315 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1316 | int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1317 | int access_type, int mmu_idx, int is_softmmu) |
| 1318 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1319 | uint32_t phys_addr; |
| 1320 | target_ulong page_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1321 | int prot; |
| 1322 | int ret, is_user; |
| 1323 | |
| 1324 | is_user = mmu_idx == MMU_USER_IDX; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1325 | ret = get_phys_addr(env, address, access_type, is_user, &phys_addr, &prot, |
| 1326 | &page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1327 | if (ret == 0) { |
| 1328 | /* Map a single [sub]page. */ |
| 1329 | phys_addr &= ~(uint32_t)0x3ff; |
| 1330 | address &= ~(uint32_t)0x3ff; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1331 | tlb_set_page (env, address, phys_addr, prot, mmu_idx, page_size); |
| 1332 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1333 | } |
| 1334 | |
| 1335 | if (access_type == 2) { |
| 1336 | env->cp15.c5_insn = ret; |
| 1337 | env->cp15.c6_insn = address; |
| 1338 | env->exception_index = EXCP_PREFETCH_ABORT; |
| 1339 | } else { |
| 1340 | env->cp15.c5_data = ret; |
| 1341 | if (access_type == 1 && arm_feature(env, ARM_FEATURE_V6)) |
| 1342 | env->cp15.c5_data |= (1 << 11); |
| 1343 | env->cp15.c6_data = address; |
| 1344 | env->exception_index = EXCP_DATA_ABORT; |
| 1345 | } |
| 1346 | return 1; |
| 1347 | } |
| 1348 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1349 | hwaddr cpu_get_phys_page_debug(CPUARMState *env, target_ulong addr) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1350 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1351 | uint32_t phys_addr; |
| 1352 | target_ulong page_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1353 | int prot; |
| 1354 | int ret; |
| 1355 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1356 | ret = get_phys_addr(env, addr, 0, 0, &phys_addr, &prot, &page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1357 | |
| 1358 | if (ret != 0) |
| 1359 | return -1; |
| 1360 | |
| 1361 | return phys_addr; |
| 1362 | } |
| 1363 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1364 | /* Return basic MPU access permission bits. */ |
| 1365 | static uint32_t simple_mpu_ap_bits(uint32_t val) |
| 1366 | { |
| 1367 | uint32_t ret; |
| 1368 | uint32_t mask; |
| 1369 | int i; |
| 1370 | ret = 0; |
| 1371 | mask = 3; |
| 1372 | for (i = 0; i < 16; i += 2) { |
| 1373 | ret |= (val >> i) & mask; |
| 1374 | mask <<= 2; |
| 1375 | } |
| 1376 | return ret; |
| 1377 | } |
| 1378 | |
| 1379 | /* Pad basic MPU access permission bits to extended format. */ |
| 1380 | static uint32_t extended_mpu_ap_bits(uint32_t val) |
| 1381 | { |
| 1382 | uint32_t ret; |
| 1383 | uint32_t mask; |
| 1384 | int i; |
| 1385 | ret = 0; |
| 1386 | mask = 3; |
| 1387 | for (i = 0; i < 16; i += 2) { |
| 1388 | ret |= (val & mask) << i; |
| 1389 | mask <<= 2; |
| 1390 | } |
| 1391 | return ret; |
| 1392 | } |
| 1393 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1394 | void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1395 | { |
| 1396 | int op1; |
| 1397 | int op2; |
| 1398 | int crm; |
| 1399 | |
| 1400 | op1 = (insn >> 21) & 7; |
| 1401 | op2 = (insn >> 5) & 7; |
| 1402 | crm = insn & 0xf; |
| 1403 | switch ((insn >> 16) & 0xf) { |
| 1404 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1405 | /* ID codes. */ |
| 1406 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1407 | break; |
| 1408 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1409 | break; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1410 | if (arm_feature(env, ARM_FEATURE_V7) |
| 1411 | && op1 == 2 && crm == 0 && op2 == 0) { |
| 1412 | env->cp15.c0_cssel = val & 0xf; |
| 1413 | break; |
| 1414 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1415 | goto bad_reg; |
| 1416 | case 1: /* System configuration. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1417 | switch (crm) { |
| 1418 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1419 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1420 | op2 = 0; |
| 1421 | switch (op2) { |
| 1422 | case 0: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1423 | if (!arm_feature(env, ARM_FEATURE_XSCALE)) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1424 | env->cp15.c1_sys = val; |
| 1425 | /* ??? Lots of these bits are not implemented. */ |
| 1426 | /* This may enable/disable the MMU, so do a TLB flush. */ |
| 1427 | tlb_flush(env, 1); |
| 1428 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1429 | case 1: /* Auxiliary control register. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1430 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1431 | env->cp15.c1_xscaleauxcr = val; |
| 1432 | break; |
| 1433 | } |
| 1434 | /* Not implemented. */ |
| 1435 | break; |
| 1436 | case 2: |
| 1437 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1438 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1439 | if (env->cp15.c1_coproc != val) { |
| 1440 | env->cp15.c1_coproc = val; |
| 1441 | /* ??? Is this safe when called from within a TB? */ |
| 1442 | tb_flush(env); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1443 | } |
| 1444 | break; |
| 1445 | default: |
| 1446 | goto bad_reg; |
| 1447 | } |
| 1448 | break; |
| 1449 | case 1: |
| 1450 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE) |
| 1451 | || (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) |
| 1452 | goto bad_reg; |
| 1453 | switch (op2) { |
| 1454 | case 0: /* Secure configuration register. */ |
| 1455 | if (env->cp15.c1_secfg & 1) |
| 1456 | goto bad_reg; |
| 1457 | env->cp15.c1_secfg = val; |
| 1458 | break; |
| 1459 | case 1: /* Secure debug enable register. */ |
| 1460 | if (env->cp15.c1_secfg & 1) |
| 1461 | goto bad_reg; |
| 1462 | env->cp15.c1_sedbg = val; |
| 1463 | break; |
| 1464 | case 2: /* Nonsecure access control register. */ |
| 1465 | if (env->cp15.c1_secfg & 1) |
| 1466 | goto bad_reg; |
| 1467 | env->cp15.c1_nseac = val; |
| 1468 | break; |
| 1469 | default: |
| 1470 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1471 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1472 | break; |
| 1473 | default: |
| 1474 | goto bad_reg; |
| 1475 | } |
| 1476 | break; |
| 1477 | case 2: /* MMU Page table control / MPU cache control. */ |
| 1478 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 1479 | switch (op2) { |
| 1480 | case 0: |
| 1481 | env->cp15.c2_data = val; |
| 1482 | break; |
| 1483 | case 1: |
| 1484 | env->cp15.c2_insn = val; |
| 1485 | break; |
| 1486 | default: |
| 1487 | goto bad_reg; |
| 1488 | } |
| 1489 | } else { |
| 1490 | switch (op2) { |
| 1491 | case 0: |
| 1492 | env->cp15.c2_base0 = val; |
| 1493 | break; |
| 1494 | case 1: |
| 1495 | env->cp15.c2_base1 = val; |
| 1496 | break; |
| 1497 | case 2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1498 | val &= 7; |
| 1499 | env->cp15.c2_control = val; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1500 | env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> val); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1501 | env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1502 | break; |
| 1503 | default: |
| 1504 | goto bad_reg; |
| 1505 | } |
| 1506 | } |
| 1507 | break; |
| 1508 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
| 1509 | env->cp15.c3 = val; |
| 1510 | tlb_flush(env, 1); /* Flush TLB as domain not tracked in TLB */ |
| 1511 | break; |
| 1512 | case 4: /* Reserved. */ |
| 1513 | goto bad_reg; |
| 1514 | case 5: /* MMU Fault status / MPU access permission. */ |
| 1515 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1516 | op2 = 0; |
| 1517 | switch (op2) { |
| 1518 | case 0: |
| 1519 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 1520 | val = extended_mpu_ap_bits(val); |
| 1521 | env->cp15.c5_data = val; |
| 1522 | break; |
| 1523 | case 1: |
| 1524 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 1525 | val = extended_mpu_ap_bits(val); |
| 1526 | env->cp15.c5_insn = val; |
| 1527 | break; |
| 1528 | case 2: |
| 1529 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 1530 | goto bad_reg; |
| 1531 | env->cp15.c5_data = val; |
| 1532 | break; |
| 1533 | case 3: |
| 1534 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 1535 | goto bad_reg; |
| 1536 | env->cp15.c5_insn = val; |
| 1537 | break; |
| 1538 | default: |
| 1539 | goto bad_reg; |
| 1540 | } |
| 1541 | break; |
| 1542 | case 6: /* MMU Fault address / MPU base/size. */ |
| 1543 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 1544 | if (crm >= 8) |
| 1545 | goto bad_reg; |
| 1546 | env->cp15.c6_region[crm] = val; |
| 1547 | } else { |
| 1548 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1549 | op2 = 0; |
| 1550 | switch (op2) { |
| 1551 | case 0: |
| 1552 | env->cp15.c6_data = val; |
| 1553 | break; |
| 1554 | case 1: /* ??? This is WFAR on armv6 */ |
| 1555 | case 2: |
| 1556 | env->cp15.c6_insn = val; |
| 1557 | break; |
| 1558 | default: |
| 1559 | goto bad_reg; |
| 1560 | } |
| 1561 | } |
| 1562 | break; |
| 1563 | case 7: /* Cache control. */ |
| 1564 | env->cp15.c15_i_max = 0x000; |
| 1565 | env->cp15.c15_i_min = 0xff0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1566 | if (op1 != 0) { |
| 1567 | goto bad_reg; |
| 1568 | } |
| 1569 | /* No cache, so nothing to do except VA->PA translations. */ |
| 1570 | if (arm_feature(env, ARM_FEATURE_V6K)) { |
| 1571 | switch (crm) { |
| 1572 | case 4: |
| 1573 | if (arm_feature(env, ARM_FEATURE_V7)) { |
| 1574 | env->cp15.c7_par = val & 0xfffff6ff; |
| 1575 | } else { |
| 1576 | env->cp15.c7_par = val & 0xfffff1ff; |
| 1577 | } |
| 1578 | break; |
| 1579 | case 8: { |
| 1580 | uint32_t phys_addr; |
| 1581 | target_ulong page_size; |
| 1582 | int prot; |
| 1583 | int ret, is_user = op2 & 2; |
| 1584 | int access_type = op2 & 1; |
| 1585 | |
| 1586 | if (op2 & 4) { |
| 1587 | /* Other states are only available with TrustZone */ |
| 1588 | goto bad_reg; |
| 1589 | } |
| 1590 | ret = get_phys_addr(env, val, access_type, is_user, |
| 1591 | &phys_addr, &prot, &page_size); |
| 1592 | if (ret == 0) { |
| 1593 | /* We do not set any attribute bits in the PAR */ |
| 1594 | if (page_size == (1 << 24) |
| 1595 | && arm_feature(env, ARM_FEATURE_V7)) { |
| 1596 | env->cp15.c7_par = (phys_addr & 0xff000000) | 1 << 1; |
| 1597 | } else { |
| 1598 | env->cp15.c7_par = phys_addr & 0xfffff000; |
| 1599 | } |
| 1600 | } else { |
| 1601 | env->cp15.c7_par = ((ret & (10 << 1)) >> 5) | |
| 1602 | ((ret & (12 << 1)) >> 6) | |
| 1603 | ((ret & 0xf) << 1) | 1; |
| 1604 | } |
| 1605 | break; |
| 1606 | } |
| 1607 | } |
| 1608 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1609 | break; |
| 1610 | case 8: /* MMU TLB control. */ |
| 1611 | switch (op2) { |
| 1612 | case 0: /* Invalidate all. */ |
| 1613 | tlb_flush(env, 0); |
| 1614 | break; |
| 1615 | case 1: /* Invalidate single TLB entry. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1616 | tlb_flush_page(env, val & TARGET_PAGE_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1617 | break; |
| 1618 | case 2: /* Invalidate on ASID. */ |
| 1619 | tlb_flush(env, val == 0); |
| 1620 | break; |
| 1621 | case 3: /* Invalidate single entry on MVA. */ |
| 1622 | /* ??? This is like case 1, but ignores ASID. */ |
| 1623 | tlb_flush(env, 1); |
| 1624 | break; |
| 1625 | default: |
| 1626 | goto bad_reg; |
| 1627 | } |
| 1628 | break; |
| 1629 | case 9: |
| 1630 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1631 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1632 | if (arm_feature(env, ARM_FEATURE_STRONGARM)) |
| 1633 | break; /* Ignore ReadBuffer access */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1634 | switch (crm) { |
| 1635 | case 0: /* Cache lockdown. */ |
| 1636 | switch (op1) { |
| 1637 | case 0: /* L1 cache. */ |
| 1638 | switch (op2) { |
| 1639 | case 0: |
| 1640 | env->cp15.c9_data = val; |
| 1641 | break; |
| 1642 | case 1: |
| 1643 | env->cp15.c9_insn = val; |
| 1644 | break; |
| 1645 | default: |
| 1646 | goto bad_reg; |
| 1647 | } |
| 1648 | break; |
| 1649 | case 1: /* L2 cache. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1650 | switch (op2) { |
| 1651 | case 0: /* L2 cache lockdown */ |
| 1652 | case 2: /* L2 cache auxiliary control */ |
| 1653 | /* ignore */ |
| 1654 | break; |
| 1655 | default: |
| 1656 | goto bad_reg; |
| 1657 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1658 | break; |
| 1659 | default: |
| 1660 | goto bad_reg; |
| 1661 | } |
| 1662 | break; |
| 1663 | case 1: /* TCM memory region registers. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1664 | case 2: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1665 | /* Not implemented. */ |
| 1666 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1667 | case 12: /* Performance monitor control */ |
| 1668 | /* Performance monitors are implementation defined in v7, |
| 1669 | * but with an ARM recommended set of registers, which we |
| 1670 | * follow (although we don't actually implement any counters) |
| 1671 | */ |
| 1672 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 1673 | goto bad_reg; |
| 1674 | } |
| 1675 | switch (op2) { |
| 1676 | case 0: /* performance monitor control register */ |
| 1677 | /* only the DP, X, D and E bits are writable */ |
| 1678 | env->cp15.c9_pmcr &= ~0x39; |
| 1679 | env->cp15.c9_pmcr |= (val & 0x39); |
| 1680 | break; |
| 1681 | case 1: /* Count enable set register */ |
| 1682 | val &= (1 << 31); |
| 1683 | env->cp15.c9_pmcnten |= val; |
| 1684 | break; |
| 1685 | case 2: /* Count enable clear */ |
| 1686 | val &= (1 << 31); |
| 1687 | env->cp15.c9_pmcnten &= ~val; |
| 1688 | break; |
| 1689 | case 3: /* Overflow flag status */ |
| 1690 | env->cp15.c9_pmovsr &= ~val; |
| 1691 | break; |
| 1692 | case 4: /* Software increment */ |
| 1693 | /* RAZ/WI since we don't implement the software-count event */ |
| 1694 | break; |
| 1695 | case 5: /* Event counter selection register */ |
| 1696 | /* Since we don't implement any events, writing to this register |
| 1697 | * is actually UNPREDICTABLE. So we choose to RAZ/WI. |
| 1698 | */ |
| 1699 | break; |
| 1700 | default: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1701 | goto bad_reg; |
| 1702 | } |
| 1703 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1704 | case 13: /* Performance counters */ |
| 1705 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 1706 | goto bad_reg; |
| 1707 | } |
| 1708 | switch (op2) { |
| 1709 | case 0: /* Cycle count register: not implemented, so RAZ/WI */ |
| 1710 | break; |
| 1711 | case 1: /* Event type select */ |
| 1712 | env->cp15.c9_pmxevtyper = val & 0xff; |
| 1713 | break; |
| 1714 | case 2: /* Event count register */ |
| 1715 | /* Unimplemented (we have no events), RAZ/WI */ |
| 1716 | break; |
| 1717 | default: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1718 | goto bad_reg; |
| 1719 | } |
| 1720 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1721 | case 14: /* Performance monitor control */ |
| 1722 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1723 | goto bad_reg; |
| 1724 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1725 | switch (op2) { |
| 1726 | case 0: /* user enable */ |
| 1727 | env->cp15.c9_pmuserenr = val & 1; |
| 1728 | /* changes access rights for cp registers, so flush tbs */ |
| 1729 | tb_flush(env); |
| 1730 | break; |
| 1731 | case 1: /* interrupt enable set */ |
| 1732 | /* We have no event counters so only the C bit can be changed */ |
| 1733 | val &= (1 << 31); |
| 1734 | env->cp15.c9_pminten |= val; |
| 1735 | break; |
| 1736 | case 2: /* interrupt enable clear */ |
| 1737 | val &= (1 << 31); |
| 1738 | env->cp15.c9_pminten &= ~val; |
| 1739 | break; |
| 1740 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1741 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1742 | default: |
| 1743 | goto bad_reg; |
| 1744 | } |
| 1745 | break; |
| 1746 | case 10: /* MMU TLB lockdown. */ |
| 1747 | /* ??? TLB lockdown not implemented. */ |
| 1748 | break; |
| 1749 | case 12: /* Reserved. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1750 | if (!op1 && !crm) { |
| 1751 | switch (op2) { |
| 1752 | case 0: |
| 1753 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 1754 | goto bad_reg; |
| 1755 | } |
| 1756 | env->cp15.c12_vbar = val & ~0x1f; |
| 1757 | break; |
| 1758 | case 1: |
| 1759 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 1760 | goto bad_reg; |
| 1761 | } |
| 1762 | if (!(env->cp15.c1_secfg & 1)) { |
| 1763 | env->cp15.c12_mvbar = val & ~0x1f; |
| 1764 | } |
| 1765 | break; |
| 1766 | default: |
| 1767 | goto bad_reg; |
| 1768 | } |
| 1769 | break; |
| 1770 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1771 | goto bad_reg; |
| 1772 | case 13: /* Process ID. */ |
| 1773 | switch (op2) { |
| 1774 | case 0: |
| 1775 | /* Unlike real hardware the qemu TLB uses virtual addresses, |
| 1776 | not modified virtual addresses, so this causes a TLB flush. |
| 1777 | */ |
| 1778 | if (env->cp15.c13_fcse != val) |
| 1779 | tlb_flush(env, 1); |
| 1780 | env->cp15.c13_fcse = val; |
| 1781 | break; |
| 1782 | case 1: |
| 1783 | /* This changes the ASID, so do a TLB flush. */ |
| 1784 | if (env->cp15.c13_context != val |
| 1785 | && !arm_feature(env, ARM_FEATURE_MPU)) |
| 1786 | tlb_flush(env, 0); |
| 1787 | env->cp15.c13_context = val; |
| 1788 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1789 | default: |
| 1790 | goto bad_reg; |
| 1791 | } |
| 1792 | break; |
| 1793 | case 14: /* Reserved. */ |
| 1794 | goto bad_reg; |
| 1795 | case 15: /* Implementation specific. */ |
| 1796 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1797 | if (op2 == 0 && crm == 1) { |
| 1798 | if (env->cp15.c15_cpar != (val & 0x3fff)) { |
| 1799 | /* Changes cp0 to cp13 behavior, so needs a TB flush. */ |
| 1800 | tb_flush(env); |
| 1801 | env->cp15.c15_cpar = val & 0x3fff; |
| 1802 | } |
| 1803 | break; |
| 1804 | } |
| 1805 | goto bad_reg; |
| 1806 | } |
| 1807 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 1808 | switch (crm) { |
| 1809 | case 0: |
| 1810 | break; |
| 1811 | case 1: /* Set TI925T configuration. */ |
| 1812 | env->cp15.c15_ticonfig = val & 0xe7; |
| 1813 | env->cp15.c0_cpuid = (val & (1 << 5)) ? /* OS_TYPE bit */ |
| 1814 | ARM_CPUID_TI915T : ARM_CPUID_TI925T; |
| 1815 | break; |
| 1816 | case 2: /* Set I_max. */ |
| 1817 | env->cp15.c15_i_max = val; |
| 1818 | break; |
| 1819 | case 3: /* Set I_min. */ |
| 1820 | env->cp15.c15_i_min = val; |
| 1821 | break; |
| 1822 | case 4: /* Set thread-ID. */ |
| 1823 | env->cp15.c15_threadid = val & 0xffff; |
| 1824 | break; |
| 1825 | case 8: /* Wait-for-interrupt (deprecated). */ |
| 1826 | cpu_interrupt(env, CPU_INTERRUPT_HALT); |
| 1827 | break; |
| 1828 | default: |
| 1829 | goto bad_reg; |
| 1830 | } |
| 1831 | } |
| 1832 | break; |
| 1833 | } |
| 1834 | return; |
| 1835 | bad_reg: |
| 1836 | /* ??? For debugging only. Should raise illegal instruction exception. */ |
| 1837 | cpu_abort(env, "Unimplemented cp15 register write (c%d, c%d, {%d, %d})\n", |
| 1838 | (insn >> 16) & 0xf, crm, op1, op2); |
| 1839 | } |
| 1840 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1841 | uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1842 | { |
| 1843 | int op1; |
| 1844 | int op2; |
| 1845 | int crm; |
| 1846 | |
| 1847 | op1 = (insn >> 21) & 7; |
| 1848 | op2 = (insn >> 5) & 7; |
| 1849 | crm = insn & 0xf; |
| 1850 | switch ((insn >> 16) & 0xf) { |
| 1851 | case 0: /* ID codes. */ |
| 1852 | switch (op1) { |
| 1853 | case 0: |
| 1854 | switch (crm) { |
| 1855 | case 0: |
| 1856 | switch (op2) { |
| 1857 | case 0: /* Device ID. */ |
| 1858 | return env->cp15.c0_cpuid; |
| 1859 | case 1: /* Cache Type. */ |
| 1860 | return env->cp15.c0_cachetype; |
| 1861 | case 2: /* TCM status. */ |
| 1862 | return 0; |
| 1863 | case 3: /* TLB type register. */ |
| 1864 | return 0; /* No lockable TLB entries. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1865 | case 5: /* MPIDR */ |
| 1866 | /* The MPIDR was standardised in v7; prior to |
| 1867 | * this it was implemented only in the 11MPCore. |
| 1868 | * For all other pre-v7 cores it does not exist. |
| 1869 | */ |
| 1870 | if (arm_feature(env, ARM_FEATURE_V7) || |
| 1871 | ARM_CPUID(env) == ARM_CPUID_ARM11MPCORE) { |
| 1872 | int mpidr = env->cpu_index; |
| 1873 | /* We don't support setting cluster ID ([8..11]) |
| 1874 | * so these bits always RAZ. |
| 1875 | */ |
| 1876 | if (arm_feature(env, ARM_FEATURE_V7MP)) { |
| 1877 | mpidr |= (1 << 31); |
| 1878 | /* Cores which are uniprocessor (non-coherent) |
| 1879 | * but still implement the MP extensions set |
| 1880 | * bit 30. (For instance, A9UP.) However we do |
| 1881 | * not currently model any of those cores. |
| 1882 | */ |
| 1883 | } |
| 1884 | return mpidr; |
| 1885 | } |
| 1886 | /* otherwise fall through to the unimplemented-reg case */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1887 | default: |
| 1888 | goto bad_reg; |
| 1889 | } |
| 1890 | case 1: |
| 1891 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1892 | goto bad_reg; |
| 1893 | return env->cp15.c0_c1[op2]; |
| 1894 | case 2: |
| 1895 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1896 | goto bad_reg; |
| 1897 | return env->cp15.c0_c2[op2]; |
| 1898 | case 3: case 4: case 5: case 6: case 7: |
| 1899 | return 0; |
| 1900 | default: |
| 1901 | goto bad_reg; |
| 1902 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1903 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1904 | case 1: |
| 1905 | /* These registers aren't documented on arm11 cores. However |
| 1906 | Linux looks at them anyway. */ |
| 1907 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1908 | goto bad_reg; |
| 1909 | if (crm != 0) |
| 1910 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1911 | if (!arm_feature(env, ARM_FEATURE_V7)) |
| 1912 | return 0; |
| 1913 | |
| 1914 | switch (op2) { |
| 1915 | case 0: |
| 1916 | return env->cp15.c0_ccsid[env->cp15.c0_cssel]; |
| 1917 | case 1: |
| 1918 | return env->cp15.c0_clid; |
| 1919 | case 7: |
| 1920 | return 0; |
| 1921 | } |
| 1922 | goto bad_reg; |
| 1923 | case 2: |
| 1924 | if (op2 != 0 || crm != 0) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1925 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1926 | return env->cp15.c0_cssel; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1927 | default: |
| 1928 | goto bad_reg; |
| 1929 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1930 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1931 | case 1: /* System configuration. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1932 | switch (crm) { |
| 1933 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1934 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1935 | op2 = 0; |
| 1936 | switch (op2) { |
| 1937 | case 0: /* Control register. */ |
| 1938 | return env->cp15.c1_sys; |
| 1939 | case 1: /* Auxiliary control register. */ |
| 1940 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1941 | return env->cp15.c1_xscaleauxcr; |
| 1942 | if (!arm_feature(env, ARM_FEATURE_AUXCR)) |
| 1943 | goto bad_reg; |
| 1944 | switch (ARM_CPUID(env)) { |
| 1945 | case ARM_CPUID_ARM1026: |
| 1946 | return 1; |
| 1947 | case ARM_CPUID_ARM1136: |
| 1948 | case ARM_CPUID_ARM1136_R2: |
| 1949 | return 7; |
| 1950 | case ARM_CPUID_ARM11MPCORE: |
| 1951 | return 1; |
| 1952 | case ARM_CPUID_CORTEXA8: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1953 | case ARM_CPUID_CORTEXA8_R2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1954 | return 2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1955 | case ARM_CPUID_CORTEXA9: |
| 1956 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1957 | default: |
| 1958 | goto bad_reg; |
| 1959 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1960 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1961 | case 2: /* Coprocessor access register. */ |
| 1962 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1963 | goto bad_reg; |
| 1964 | return env->cp15.c1_coproc; |
| 1965 | default: |
| 1966 | goto bad_reg; |
| 1967 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1968 | break; |
| 1969 | case 1: |
| 1970 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE) |
| 1971 | || (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) |
| 1972 | goto bad_reg; |
| 1973 | switch (op2) { |
| 1974 | case 0: /* Secure configuration register. */ |
| 1975 | if (env->cp15.c1_secfg & 1) |
| 1976 | goto bad_reg; |
| 1977 | return env->cp15.c1_secfg; |
| 1978 | case 1: /* Secure debug enable register. */ |
| 1979 | if (env->cp15.c1_secfg & 1) |
| 1980 | goto bad_reg; |
| 1981 | return env->cp15.c1_sedbg; |
| 1982 | case 2: /* Nonsecure access control register. */ |
| 1983 | return env->cp15.c1_nseac; |
| 1984 | default: |
| 1985 | goto bad_reg; |
| 1986 | } |
| 1987 | break; |
| 1988 | default: |
| 1989 | goto bad_reg; |
| 1990 | } |
| 1991 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1992 | case 2: /* MMU Page table control / MPU cache control. */ |
| 1993 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 1994 | switch (op2) { |
| 1995 | case 0: |
| 1996 | return env->cp15.c2_data; |
| 1997 | break; |
| 1998 | case 1: |
| 1999 | return env->cp15.c2_insn; |
| 2000 | break; |
| 2001 | default: |
| 2002 | goto bad_reg; |
| 2003 | } |
| 2004 | } else { |
| 2005 | switch (op2) { |
| 2006 | case 0: |
| 2007 | return env->cp15.c2_base0; |
| 2008 | case 1: |
| 2009 | return env->cp15.c2_base1; |
| 2010 | case 2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2011 | return env->cp15.c2_control; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2012 | default: |
| 2013 | goto bad_reg; |
| 2014 | } |
| 2015 | } |
| 2016 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
| 2017 | return env->cp15.c3; |
| 2018 | case 4: /* Reserved. */ |
| 2019 | goto bad_reg; |
| 2020 | case 5: /* MMU Fault status / MPU access permission. */ |
| 2021 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 2022 | op2 = 0; |
| 2023 | switch (op2) { |
| 2024 | case 0: |
| 2025 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 2026 | return simple_mpu_ap_bits(env->cp15.c5_data); |
| 2027 | return env->cp15.c5_data; |
| 2028 | case 1: |
| 2029 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 2030 | return simple_mpu_ap_bits(env->cp15.c5_data); |
| 2031 | return env->cp15.c5_insn; |
| 2032 | case 2: |
| 2033 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 2034 | goto bad_reg; |
| 2035 | return env->cp15.c5_data; |
| 2036 | case 3: |
| 2037 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 2038 | goto bad_reg; |
| 2039 | return env->cp15.c5_insn; |
| 2040 | default: |
| 2041 | goto bad_reg; |
| 2042 | } |
| 2043 | case 6: /* MMU Fault address. */ |
| 2044 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 2045 | if (crm >= 8) |
| 2046 | goto bad_reg; |
| 2047 | return env->cp15.c6_region[crm]; |
| 2048 | } else { |
| 2049 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 2050 | op2 = 0; |
| 2051 | switch (op2) { |
| 2052 | case 0: |
| 2053 | return env->cp15.c6_data; |
| 2054 | case 1: |
| 2055 | if (arm_feature(env, ARM_FEATURE_V6)) { |
| 2056 | /* Watchpoint Fault Adrress. */ |
| 2057 | return 0; /* Not implemented. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2058 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2059 | /* Instruction Fault Adrress. */ |
| 2060 | /* Arm9 doesn't have an IFAR, but implementing it anyway |
| 2061 | shouldn't do any harm. */ |
| 2062 | return env->cp15.c6_insn; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2063 | case 2: |
| 2064 | if (arm_feature(env, ARM_FEATURE_V6)) { |
| 2065 | /* Instruction Fault Adrress. */ |
| 2066 | return env->cp15.c6_insn; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2067 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2068 | goto bad_reg; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2069 | default: |
| 2070 | goto bad_reg; |
| 2071 | } |
| 2072 | } |
| 2073 | case 7: /* Cache control. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2074 | if (crm == 4 && op1 == 0 && op2 == 0) { |
| 2075 | return env->cp15.c7_par; |
| 2076 | } |
| 2077 | if (((insn >> 12) & 0xf) == 0xf) /* clear ZF only if destination is r15 */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2078 | env->ZF = 0; |
| 2079 | return 0; |
| 2080 | case 8: /* MMU TLB control. */ |
| 2081 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2082 | case 9: |
| 2083 | switch (crm) { |
| 2084 | case 0: /* Cache lockdown */ |
| 2085 | switch (op1) { |
| 2086 | case 0: /* L1 cache. */ |
| 2087 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 2088 | return 0; |
| 2089 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2090 | switch (op2) { |
| 2091 | case 0: |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2092 | return env->cp15.c9_data; |
| 2093 | case 1: |
| 2094 | return env->cp15.c9_insn; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2095 | default: |
| 2096 | goto bad_reg; |
| 2097 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2098 | case 1: /* L2 cache */ |
| 2099 | if (crm != 0) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2100 | goto bad_reg; |
| 2101 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2102 | /* L2 Lockdown and Auxiliary control. */ |
| 2103 | return 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2104 | default: |
| 2105 | goto bad_reg; |
| 2106 | } |
| 2107 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2108 | case 12: /* Performance monitor control */ |
| 2109 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2110 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2111 | } |
| 2112 | switch (op2) { |
| 2113 | case 0: /* performance monitor control register */ |
| 2114 | return env->cp15.c9_pmcr; |
| 2115 | case 1: /* count enable set */ |
| 2116 | case 2: /* count enable clear */ |
| 2117 | return env->cp15.c9_pmcnten; |
| 2118 | case 3: /* overflow flag status */ |
| 2119 | return env->cp15.c9_pmovsr; |
| 2120 | case 4: /* software increment */ |
| 2121 | case 5: /* event counter selection register */ |
| 2122 | return 0; /* Unimplemented, RAZ/WI */ |
| 2123 | default: |
| 2124 | goto bad_reg; |
| 2125 | } |
| 2126 | case 13: /* Performance counters */ |
| 2127 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 2128 | goto bad_reg; |
| 2129 | } |
| 2130 | switch (op2) { |
| 2131 | case 1: /* Event type select */ |
| 2132 | return env->cp15.c9_pmxevtyper; |
| 2133 | case 0: /* Cycle count register */ |
| 2134 | case 2: /* Event count register */ |
| 2135 | /* Unimplemented, so RAZ/WI */ |
| 2136 | return 0; |
| 2137 | default: |
| 2138 | goto bad_reg; |
| 2139 | } |
| 2140 | case 14: /* Performance monitor control */ |
| 2141 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 2142 | goto bad_reg; |
| 2143 | } |
| 2144 | switch (op2) { |
| 2145 | case 0: /* user enable */ |
| 2146 | return env->cp15.c9_pmuserenr; |
| 2147 | case 1: /* interrupt enable set */ |
| 2148 | case 2: /* interrupt enable clear */ |
| 2149 | return env->cp15.c9_pminten; |
| 2150 | default: |
| 2151 | goto bad_reg; |
| 2152 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2153 | default: |
| 2154 | goto bad_reg; |
| 2155 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2156 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2157 | case 10: /* MMU TLB lockdown. */ |
| 2158 | /* ??? TLB lockdown not implemented. */ |
| 2159 | return 0; |
| 2160 | case 11: /* TCM DMA control. */ |
| 2161 | case 12: /* Reserved. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2162 | if (!op1 && !crm) { |
| 2163 | switch (op2) { |
| 2164 | case 0: /* secure or nonsecure vector base address */ |
| 2165 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 2166 | return env->cp15.c12_vbar; |
| 2167 | } |
| 2168 | break; |
| 2169 | case 1: /* monitor vector base address */ |
| 2170 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 2171 | return env->cp15.c12_mvbar; |
| 2172 | } |
| 2173 | break; |
| 2174 | default: |
| 2175 | break; |
| 2176 | } |
| 2177 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2178 | goto bad_reg; |
| 2179 | case 13: /* Process ID. */ |
| 2180 | switch (op2) { |
| 2181 | case 0: |
| 2182 | return env->cp15.c13_fcse; |
| 2183 | case 1: |
| 2184 | return env->cp15.c13_context; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2185 | default: |
| 2186 | goto bad_reg; |
| 2187 | } |
| 2188 | case 14: /* Reserved. */ |
| 2189 | goto bad_reg; |
| 2190 | case 15: /* Implementation specific. */ |
| 2191 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 2192 | if (op2 == 0 && crm == 1) |
| 2193 | return env->cp15.c15_cpar; |
| 2194 | |
| 2195 | goto bad_reg; |
| 2196 | } |
| 2197 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 2198 | switch (crm) { |
| 2199 | case 0: |
| 2200 | return 0; |
| 2201 | case 1: /* Read TI925T configuration. */ |
| 2202 | return env->cp15.c15_ticonfig; |
| 2203 | case 2: /* Read I_max. */ |
| 2204 | return env->cp15.c15_i_max; |
| 2205 | case 3: /* Read I_min. */ |
| 2206 | return env->cp15.c15_i_min; |
| 2207 | case 4: /* Read thread-ID. */ |
| 2208 | return env->cp15.c15_threadid; |
| 2209 | case 8: /* TI925T_status */ |
| 2210 | return 0; |
| 2211 | } |
| 2212 | /* TODO: Peripheral port remap register: |
| 2213 | * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt |
| 2214 | * controller base address at $rn & ~0xfff and map size of |
| 2215 | * 0x200 << ($rn & 0xfff), when MMU is off. */ |
| 2216 | goto bad_reg; |
| 2217 | } |
| 2218 | return 0; |
| 2219 | } |
| 2220 | bad_reg: |
| 2221 | /* ??? For debugging only. Should raise illegal instruction exception. */ |
| 2222 | cpu_abort(env, "Unimplemented cp15 register read (c%d, c%d, {%d, %d})\n", |
| 2223 | (insn >> 16) & 0xf, crm, op1, op2); |
| 2224 | return 0; |
| 2225 | } |
| 2226 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2227 | void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2228 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2229 | if ((env->uncached_cpsr & CPSR_M) == mode) { |
| 2230 | env->regs[13] = val; |
| 2231 | } else { |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 2232 | env->banked_r13[bank_number(env, mode)] = val; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2233 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2234 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2235 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2236 | uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2237 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2238 | if ((env->uncached_cpsr & CPSR_M) == mode) { |
| 2239 | return env->regs[13]; |
| 2240 | } else { |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 2241 | return env->banked_r13[bank_number(env, mode)]; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2242 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2243 | } |
| 2244 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2245 | uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2246 | { |
| 2247 | switch (reg) { |
| 2248 | case 0: /* APSR */ |
| 2249 | return xpsr_read(env) & 0xf8000000; |
| 2250 | case 1: /* IAPSR */ |
| 2251 | return xpsr_read(env) & 0xf80001ff; |
| 2252 | case 2: /* EAPSR */ |
| 2253 | return xpsr_read(env) & 0xff00fc00; |
| 2254 | case 3: /* xPSR */ |
| 2255 | return xpsr_read(env) & 0xff00fdff; |
| 2256 | case 5: /* IPSR */ |
| 2257 | return xpsr_read(env) & 0x000001ff; |
| 2258 | case 6: /* EPSR */ |
| 2259 | return xpsr_read(env) & 0x0700fc00; |
| 2260 | case 7: /* IEPSR */ |
| 2261 | return xpsr_read(env) & 0x0700edff; |
| 2262 | case 8: /* MSP */ |
| 2263 | return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13]; |
| 2264 | case 9: /* PSP */ |
| 2265 | return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp; |
| 2266 | case 16: /* PRIMASK */ |
| 2267 | return (env->uncached_cpsr & CPSR_I) != 0; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame^] | 2268 | case 17: /* BASEPRI */ |
| 2269 | case 18: /* BASEPRI_MAX */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2270 | return env->v7m.basepri; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame^] | 2271 | case 19: /* FAULTMASK */ |
| 2272 | return (env->uncached_cpsr & CPSR_F) != 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2273 | case 20: /* CONTROL */ |
| 2274 | return env->v7m.control; |
| 2275 | default: |
| 2276 | /* ??? For debugging only. */ |
| 2277 | cpu_abort(env, "Unimplemented system register read (%d)\n", reg); |
| 2278 | return 0; |
| 2279 | } |
| 2280 | } |
| 2281 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2282 | void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2283 | { |
| 2284 | switch (reg) { |
| 2285 | case 0: /* APSR */ |
| 2286 | xpsr_write(env, val, 0xf8000000); |
| 2287 | break; |
| 2288 | case 1: /* IAPSR */ |
| 2289 | xpsr_write(env, val, 0xf8000000); |
| 2290 | break; |
| 2291 | case 2: /* EAPSR */ |
| 2292 | xpsr_write(env, val, 0xfe00fc00); |
| 2293 | break; |
| 2294 | case 3: /* xPSR */ |
| 2295 | xpsr_write(env, val, 0xfe00fc00); |
| 2296 | break; |
| 2297 | case 5: /* IPSR */ |
| 2298 | /* IPSR bits are readonly. */ |
| 2299 | break; |
| 2300 | case 6: /* EPSR */ |
| 2301 | xpsr_write(env, val, 0x0600fc00); |
| 2302 | break; |
| 2303 | case 7: /* IEPSR */ |
| 2304 | xpsr_write(env, val, 0x0600fc00); |
| 2305 | break; |
| 2306 | case 8: /* MSP */ |
| 2307 | if (env->v7m.current_sp) |
| 2308 | env->v7m.other_sp = val; |
| 2309 | else |
| 2310 | env->regs[13] = val; |
| 2311 | break; |
| 2312 | case 9: /* PSP */ |
| 2313 | if (env->v7m.current_sp) |
| 2314 | env->regs[13] = val; |
| 2315 | else |
| 2316 | env->v7m.other_sp = val; |
| 2317 | break; |
| 2318 | case 16: /* PRIMASK */ |
| 2319 | if (val & 1) |
| 2320 | env->uncached_cpsr |= CPSR_I; |
| 2321 | else |
| 2322 | env->uncached_cpsr &= ~CPSR_I; |
| 2323 | break; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame^] | 2324 | case 17: /* BASEPRI */ |
| 2325 | env->v7m.basepri = val & 0xff; |
| 2326 | break; |
| 2327 | case 18: /* BASEPRI_MAX */ |
| 2328 | val &= 0xff; |
| 2329 | if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0)) |
| 2330 | env->v7m.basepri = val; |
| 2331 | break; |
| 2332 | case 19: /* FAULTMASK */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2333 | if (val & 1) |
| 2334 | env->uncached_cpsr |= CPSR_F; |
| 2335 | else |
| 2336 | env->uncached_cpsr &= ~CPSR_F; |
| 2337 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2338 | case 20: /* CONTROL */ |
| 2339 | env->v7m.control = val & 3; |
| 2340 | switch_v7m_sp(env, (val & 2) != 0); |
| 2341 | break; |
| 2342 | default: |
| 2343 | /* ??? For debugging only. */ |
| 2344 | cpu_abort(env, "Unimplemented system register write (%d)\n", reg); |
| 2345 | return; |
| 2346 | } |
| 2347 | } |
| 2348 | |
| 2349 | void cpu_arm_set_cp_io(CPUARMState *env, int cpnum, |
| 2350 | ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write, |
| 2351 | void *opaque) |
| 2352 | { |
| 2353 | if (cpnum < 0 || cpnum > 14) { |
| 2354 | cpu_abort(env, "Bad coprocessor number: %i\n", cpnum); |
| 2355 | return; |
| 2356 | } |
| 2357 | |
| 2358 | env->cp[cpnum].cp_read = cp_read; |
| 2359 | env->cp[cpnum].cp_write = cp_write; |
| 2360 | env->cp[cpnum].opaque = opaque; |
| 2361 | } |
| 2362 | |
| 2363 | #endif |
| 2364 | |
| 2365 | /* Note that signed overflow is undefined in C. The following routines are |
| 2366 | careful to use unsigned types where modulo arithmetic is required. |
| 2367 | Failure to do so _will_ break on newer gcc. */ |
| 2368 | |
| 2369 | /* Signed saturating arithmetic. */ |
| 2370 | |
| 2371 | /* Perform 16-bit signed saturating addition. */ |
| 2372 | static inline uint16_t add16_sat(uint16_t a, uint16_t b) |
| 2373 | { |
| 2374 | uint16_t res; |
| 2375 | |
| 2376 | res = a + b; |
| 2377 | if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { |
| 2378 | if (a & 0x8000) |
| 2379 | res = 0x8000; |
| 2380 | else |
| 2381 | res = 0x7fff; |
| 2382 | } |
| 2383 | return res; |
| 2384 | } |
| 2385 | |
| 2386 | /* Perform 8-bit signed saturating addition. */ |
| 2387 | static inline uint8_t add8_sat(uint8_t a, uint8_t b) |
| 2388 | { |
| 2389 | uint8_t res; |
| 2390 | |
| 2391 | res = a + b; |
| 2392 | if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { |
| 2393 | if (a & 0x80) |
| 2394 | res = 0x80; |
| 2395 | else |
| 2396 | res = 0x7f; |
| 2397 | } |
| 2398 | return res; |
| 2399 | } |
| 2400 | |
| 2401 | /* Perform 16-bit signed saturating subtraction. */ |
| 2402 | static inline uint16_t sub16_sat(uint16_t a, uint16_t b) |
| 2403 | { |
| 2404 | uint16_t res; |
| 2405 | |
| 2406 | res = a - b; |
| 2407 | if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { |
| 2408 | if (a & 0x8000) |
| 2409 | res = 0x8000; |
| 2410 | else |
| 2411 | res = 0x7fff; |
| 2412 | } |
| 2413 | return res; |
| 2414 | } |
| 2415 | |
| 2416 | /* Perform 8-bit signed saturating subtraction. */ |
| 2417 | static inline uint8_t sub8_sat(uint8_t a, uint8_t b) |
| 2418 | { |
| 2419 | uint8_t res; |
| 2420 | |
| 2421 | res = a - b; |
| 2422 | if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { |
| 2423 | if (a & 0x80) |
| 2424 | res = 0x80; |
| 2425 | else |
| 2426 | res = 0x7f; |
| 2427 | } |
| 2428 | return res; |
| 2429 | } |
| 2430 | |
| 2431 | #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); |
| 2432 | #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); |
| 2433 | #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); |
| 2434 | #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); |
| 2435 | #define PFX q |
| 2436 | |
| 2437 | #include "op_addsub.h" |
| 2438 | |
| 2439 | /* Unsigned saturating arithmetic. */ |
| 2440 | static inline uint16_t add16_usat(uint16_t a, uint16_t b) |
| 2441 | { |
| 2442 | uint16_t res; |
| 2443 | res = a + b; |
| 2444 | if (res < a) |
| 2445 | res = 0xffff; |
| 2446 | return res; |
| 2447 | } |
| 2448 | |
| 2449 | static inline uint16_t sub16_usat(uint16_t a, uint16_t b) |
| 2450 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2451 | if (a > b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2452 | return a - b; |
| 2453 | else |
| 2454 | return 0; |
| 2455 | } |
| 2456 | |
| 2457 | static inline uint8_t add8_usat(uint8_t a, uint8_t b) |
| 2458 | { |
| 2459 | uint8_t res; |
| 2460 | res = a + b; |
| 2461 | if (res < a) |
| 2462 | res = 0xff; |
| 2463 | return res; |
| 2464 | } |
| 2465 | |
| 2466 | static inline uint8_t sub8_usat(uint8_t a, uint8_t b) |
| 2467 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2468 | if (a > b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2469 | return a - b; |
| 2470 | else |
| 2471 | return 0; |
| 2472 | } |
| 2473 | |
| 2474 | #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); |
| 2475 | #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); |
| 2476 | #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); |
| 2477 | #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); |
| 2478 | #define PFX uq |
| 2479 | |
| 2480 | #include "op_addsub.h" |
| 2481 | |
| 2482 | /* Signed modulo arithmetic. */ |
| 2483 | #define SARITH16(a, b, n, op) do { \ |
| 2484 | int32_t sum; \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2485 | sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2486 | RESULT(sum, n, 16); \ |
| 2487 | if (sum >= 0) \ |
| 2488 | ge |= 3 << (n * 2); \ |
| 2489 | } while(0) |
| 2490 | |
| 2491 | #define SARITH8(a, b, n, op) do { \ |
| 2492 | int32_t sum; \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2493 | sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2494 | RESULT(sum, n, 8); \ |
| 2495 | if (sum >= 0) \ |
| 2496 | ge |= 1 << n; \ |
| 2497 | } while(0) |
| 2498 | |
| 2499 | |
| 2500 | #define ADD16(a, b, n) SARITH16(a, b, n, +) |
| 2501 | #define SUB16(a, b, n) SARITH16(a, b, n, -) |
| 2502 | #define ADD8(a, b, n) SARITH8(a, b, n, +) |
| 2503 | #define SUB8(a, b, n) SARITH8(a, b, n, -) |
| 2504 | #define PFX s |
| 2505 | #define ARITH_GE |
| 2506 | |
| 2507 | #include "op_addsub.h" |
| 2508 | |
| 2509 | /* Unsigned modulo arithmetic. */ |
| 2510 | #define ADD16(a, b, n) do { \ |
| 2511 | uint32_t sum; \ |
| 2512 | sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ |
| 2513 | RESULT(sum, n, 16); \ |
| 2514 | if ((sum >> 16) == 1) \ |
| 2515 | ge |= 3 << (n * 2); \ |
| 2516 | } while(0) |
| 2517 | |
| 2518 | #define ADD8(a, b, n) do { \ |
| 2519 | uint32_t sum; \ |
| 2520 | sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ |
| 2521 | RESULT(sum, n, 8); \ |
| 2522 | if ((sum >> 8) == 1) \ |
| 2523 | ge |= 1 << n; \ |
| 2524 | } while(0) |
| 2525 | |
| 2526 | #define SUB16(a, b, n) do { \ |
| 2527 | uint32_t sum; \ |
| 2528 | sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ |
| 2529 | RESULT(sum, n, 16); \ |
| 2530 | if ((sum >> 16) == 0) \ |
| 2531 | ge |= 3 << (n * 2); \ |
| 2532 | } while(0) |
| 2533 | |
| 2534 | #define SUB8(a, b, n) do { \ |
| 2535 | uint32_t sum; \ |
| 2536 | sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ |
| 2537 | RESULT(sum, n, 8); \ |
| 2538 | if ((sum >> 8) == 0) \ |
| 2539 | ge |= 1 << n; \ |
| 2540 | } while(0) |
| 2541 | |
| 2542 | #define PFX u |
| 2543 | #define ARITH_GE |
| 2544 | |
| 2545 | #include "op_addsub.h" |
| 2546 | |
| 2547 | /* Halved signed arithmetic. */ |
| 2548 | #define ADD16(a, b, n) \ |
| 2549 | RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) |
| 2550 | #define SUB16(a, b, n) \ |
| 2551 | RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) |
| 2552 | #define ADD8(a, b, n) \ |
| 2553 | RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) |
| 2554 | #define SUB8(a, b, n) \ |
| 2555 | RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) |
| 2556 | #define PFX sh |
| 2557 | |
| 2558 | #include "op_addsub.h" |
| 2559 | |
| 2560 | /* Halved unsigned arithmetic. */ |
| 2561 | #define ADD16(a, b, n) \ |
| 2562 | RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) |
| 2563 | #define SUB16(a, b, n) \ |
| 2564 | RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) |
| 2565 | #define ADD8(a, b, n) \ |
| 2566 | RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) |
| 2567 | #define SUB8(a, b, n) \ |
| 2568 | RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) |
| 2569 | #define PFX uh |
| 2570 | |
| 2571 | #include "op_addsub.h" |
| 2572 | |
| 2573 | static inline uint8_t do_usad(uint8_t a, uint8_t b) |
| 2574 | { |
| 2575 | if (a > b) |
| 2576 | return a - b; |
| 2577 | else |
| 2578 | return b - a; |
| 2579 | } |
| 2580 | |
| 2581 | /* Unsigned sum of absolute byte differences. */ |
| 2582 | uint32_t HELPER(usad8)(uint32_t a, uint32_t b) |
| 2583 | { |
| 2584 | uint32_t sum; |
| 2585 | sum = do_usad(a, b); |
| 2586 | sum += do_usad(a >> 8, b >> 8); |
| 2587 | sum += do_usad(a >> 16, b >>16); |
| 2588 | sum += do_usad(a >> 24, b >> 24); |
| 2589 | return sum; |
| 2590 | } |
| 2591 | |
| 2592 | /* For ARMv6 SEL instruction. */ |
| 2593 | uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b) |
| 2594 | { |
| 2595 | uint32_t mask; |
| 2596 | |
| 2597 | mask = 0; |
| 2598 | if (flags & 1) |
| 2599 | mask |= 0xff; |
| 2600 | if (flags & 2) |
| 2601 | mask |= 0xff00; |
| 2602 | if (flags & 4) |
| 2603 | mask |= 0xff0000; |
| 2604 | if (flags & 8) |
| 2605 | mask |= 0xff000000; |
| 2606 | return (a & mask) | (b & ~mask); |
| 2607 | } |
| 2608 | |
| 2609 | uint32_t HELPER(logicq_cc)(uint64_t val) |
| 2610 | { |
| 2611 | return (val >> 32) | (val != 0); |
| 2612 | } |
| 2613 | |
| 2614 | /* VFP support. We follow the convention used for VFP instrunctions: |
| 2615 | Single precition routines have a "s" suffix, double precision a |
| 2616 | "d" suffix. */ |
| 2617 | |
| 2618 | /* Convert host exception flags to vfp form. */ |
| 2619 | static inline int vfp_exceptbits_from_host(int host_bits) |
| 2620 | { |
| 2621 | int target_bits = 0; |
| 2622 | |
| 2623 | if (host_bits & float_flag_invalid) |
| 2624 | target_bits |= 1; |
| 2625 | if (host_bits & float_flag_divbyzero) |
| 2626 | target_bits |= 2; |
| 2627 | if (host_bits & float_flag_overflow) |
| 2628 | target_bits |= 4; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2629 | if (host_bits & (float_flag_underflow | float_flag_output_denormal)) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2630 | target_bits |= 8; |
| 2631 | if (host_bits & float_flag_inexact) |
| 2632 | target_bits |= 0x10; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2633 | if (host_bits & float_flag_input_denormal) |
| 2634 | target_bits |= 0x80; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2635 | return target_bits; |
| 2636 | } |
| 2637 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2638 | uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2639 | { |
| 2640 | int i; |
| 2641 | uint32_t fpscr; |
| 2642 | |
| 2643 | fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff) |
| 2644 | | (env->vfp.vec_len << 16) |
| 2645 | | (env->vfp.vec_stride << 20); |
| 2646 | i = get_float_exception_flags(&env->vfp.fp_status); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2647 | i |= get_float_exception_flags(&env->vfp.standard_fp_status); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2648 | fpscr |= vfp_exceptbits_from_host(i); |
| 2649 | return fpscr; |
| 2650 | } |
| 2651 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2652 | uint32_t vfp_get_fpscr(CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2653 | { |
| 2654 | return HELPER(vfp_get_fpscr)(env); |
| 2655 | } |
| 2656 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2657 | /* Convert vfp exception flags to target form. */ |
| 2658 | static inline int vfp_exceptbits_to_host(int target_bits) |
| 2659 | { |
| 2660 | int host_bits = 0; |
| 2661 | |
| 2662 | if (target_bits & 1) |
| 2663 | host_bits |= float_flag_invalid; |
| 2664 | if (target_bits & 2) |
| 2665 | host_bits |= float_flag_divbyzero; |
| 2666 | if (target_bits & 4) |
| 2667 | host_bits |= float_flag_overflow; |
| 2668 | if (target_bits & 8) |
| 2669 | host_bits |= float_flag_underflow; |
| 2670 | if (target_bits & 0x10) |
| 2671 | host_bits |= float_flag_inexact; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2672 | if (target_bits & 0x80) |
| 2673 | host_bits |= float_flag_input_denormal; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2674 | return host_bits; |
| 2675 | } |
| 2676 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2677 | void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2678 | { |
| 2679 | int i; |
| 2680 | uint32_t changed; |
| 2681 | |
| 2682 | changed = env->vfp.xregs[ARM_VFP_FPSCR]; |
| 2683 | env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff); |
| 2684 | env->vfp.vec_len = (val >> 16) & 7; |
| 2685 | env->vfp.vec_stride = (val >> 20) & 3; |
| 2686 | |
| 2687 | changed ^= val; |
| 2688 | if (changed & (3 << 22)) { |
| 2689 | i = (val >> 22) & 3; |
| 2690 | switch (i) { |
| 2691 | case 0: |
| 2692 | i = float_round_nearest_even; |
| 2693 | break; |
| 2694 | case 1: |
| 2695 | i = float_round_up; |
| 2696 | break; |
| 2697 | case 2: |
| 2698 | i = float_round_down; |
| 2699 | break; |
| 2700 | case 3: |
| 2701 | i = float_round_to_zero; |
| 2702 | break; |
| 2703 | } |
| 2704 | set_float_rounding_mode(i, &env->vfp.fp_status); |
| 2705 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2706 | if (changed & (1 << 24)) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2707 | set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2708 | set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); |
| 2709 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2710 | if (changed & (1 << 25)) |
| 2711 | set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2712 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2713 | i = vfp_exceptbits_to_host(val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2714 | set_float_exception_flags(i, &env->vfp.fp_status); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2715 | set_float_exception_flags(0, &env->vfp.standard_fp_status); |
| 2716 | } |
| 2717 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2718 | void vfp_set_fpscr(CPUARMState *env, uint32_t val) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2719 | { |
| 2720 | HELPER(vfp_set_fpscr)(env, val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2721 | } |
| 2722 | |
| 2723 | #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p)) |
| 2724 | |
| 2725 | #define VFP_BINOP(name) \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2726 | float32 VFP_HELPER(name, s)(float32 a, float32 b, void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2727 | { \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2728 | float_status *fpst = fpstp; \ |
| 2729 | return float32_ ## name (a, b, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2730 | } \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2731 | float64 VFP_HELPER(name, d)(float64 a, float64 b, void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2732 | { \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2733 | float_status *fpst = fpstp; \ |
| 2734 | return float64_ ## name (a, b, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2735 | } |
| 2736 | VFP_BINOP(add) |
| 2737 | VFP_BINOP(sub) |
| 2738 | VFP_BINOP(mul) |
| 2739 | VFP_BINOP(div) |
| 2740 | #undef VFP_BINOP |
| 2741 | |
| 2742 | float32 VFP_HELPER(neg, s)(float32 a) |
| 2743 | { |
| 2744 | return float32_chs(a); |
| 2745 | } |
| 2746 | |
| 2747 | float64 VFP_HELPER(neg, d)(float64 a) |
| 2748 | { |
| 2749 | return float64_chs(a); |
| 2750 | } |
| 2751 | |
| 2752 | float32 VFP_HELPER(abs, s)(float32 a) |
| 2753 | { |
| 2754 | return float32_abs(a); |
| 2755 | } |
| 2756 | |
| 2757 | float64 VFP_HELPER(abs, d)(float64 a) |
| 2758 | { |
| 2759 | return float64_abs(a); |
| 2760 | } |
| 2761 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2762 | float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2763 | { |
| 2764 | return float32_sqrt(a, &env->vfp.fp_status); |
| 2765 | } |
| 2766 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2767 | float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2768 | { |
| 2769 | return float64_sqrt(a, &env->vfp.fp_status); |
| 2770 | } |
| 2771 | |
| 2772 | /* XXX: check quiet/signaling case */ |
| 2773 | #define DO_VFP_cmp(p, type) \ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2774 | void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2775 | { \ |
| 2776 | uint32_t flags; \ |
| 2777 | switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \ |
| 2778 | case 0: flags = 0x6; break; \ |
| 2779 | case -1: flags = 0x8; break; \ |
| 2780 | case 1: flags = 0x2; break; \ |
| 2781 | default: case 2: flags = 0x3; break; \ |
| 2782 | } \ |
| 2783 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ |
| 2784 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ |
| 2785 | } \ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2786 | void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2787 | { \ |
| 2788 | uint32_t flags; \ |
| 2789 | switch(type ## _compare(a, b, &env->vfp.fp_status)) { \ |
| 2790 | case 0: flags = 0x6; break; \ |
| 2791 | case -1: flags = 0x8; break; \ |
| 2792 | case 1: flags = 0x2; break; \ |
| 2793 | default: case 2: flags = 0x3; break; \ |
| 2794 | } \ |
| 2795 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ |
| 2796 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ |
| 2797 | } |
| 2798 | DO_VFP_cmp(s, float32) |
| 2799 | DO_VFP_cmp(d, float64) |
| 2800 | #undef DO_VFP_cmp |
| 2801 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2802 | /* Integer to float and float to integer conversions */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2803 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2804 | #define CONV_ITOF(name, fsz, sign) \ |
| 2805 | float##fsz HELPER(name)(uint32_t x, void *fpstp) \ |
| 2806 | { \ |
| 2807 | float_status *fpst = fpstp; \ |
| 2808 | return sign##int32_to_##float##fsz(x, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2809 | } |
| 2810 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2811 | #define CONV_FTOI(name, fsz, sign, round) \ |
| 2812 | uint32_t HELPER(name)(float##fsz x, void *fpstp) \ |
| 2813 | { \ |
| 2814 | float_status *fpst = fpstp; \ |
| 2815 | if (float##fsz##_is_any_nan(x)) { \ |
| 2816 | float_raise(float_flag_invalid, fpst); \ |
| 2817 | return 0; \ |
| 2818 | } \ |
| 2819 | return float##fsz##_to_##sign##int32##round(x, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2820 | } |
| 2821 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2822 | #define FLOAT_CONVS(name, p, fsz, sign) \ |
| 2823 | CONV_ITOF(vfp_##name##to##p, fsz, sign) \ |
| 2824 | CONV_FTOI(vfp_to##name##p, fsz, sign, ) \ |
| 2825 | CONV_FTOI(vfp_to##name##z##p, fsz, sign, _round_to_zero) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2826 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2827 | FLOAT_CONVS(si, s, 32, ) |
| 2828 | FLOAT_CONVS(si, d, 64, ) |
| 2829 | FLOAT_CONVS(ui, s, 32, u) |
| 2830 | FLOAT_CONVS(ui, d, 64, u) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2831 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2832 | #undef CONV_ITOF |
| 2833 | #undef CONV_FTOI |
| 2834 | #undef FLOAT_CONVS |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2835 | |
| 2836 | /* floating point conversion */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2837 | float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2838 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2839 | float64 r = float32_to_float64(x, &env->vfp.fp_status); |
| 2840 | /* ARM requires that S<->D conversion of any kind of NaN generates |
| 2841 | * a quiet NaN by forcing the most significant frac bit to 1. |
| 2842 | */ |
| 2843 | return float64_maybe_silence_nan(r); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2844 | } |
| 2845 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2846 | float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2847 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2848 | float32 r = float64_to_float32(x, &env->vfp.fp_status); |
| 2849 | /* ARM requires that S<->D conversion of any kind of NaN generates |
| 2850 | * a quiet NaN by forcing the most significant frac bit to 1. |
| 2851 | */ |
| 2852 | return float32_maybe_silence_nan(r); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2853 | } |
| 2854 | |
| 2855 | /* VFP3 fixed point conversion. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2856 | #define VFP_CONV_FIX(name, p, fsz, itype, sign) \ |
| 2857 | float##fsz HELPER(vfp_##name##to##p)(uint##fsz##_t x, uint32_t shift, \ |
| 2858 | void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2859 | { \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2860 | float_status *fpst = fpstp; \ |
| 2861 | float##fsz tmp; \ |
| 2862 | tmp = sign##int32_to_##float##fsz((itype##_t)x, fpst); \ |
| 2863 | return float##fsz##_scalbn(tmp, -(int)shift, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2864 | } \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2865 | uint##fsz##_t HELPER(vfp_to##name##p)(float##fsz x, uint32_t shift, \ |
| 2866 | void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2867 | { \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2868 | float_status *fpst = fpstp; \ |
| 2869 | float##fsz tmp; \ |
| 2870 | if (float##fsz##_is_any_nan(x)) { \ |
| 2871 | float_raise(float_flag_invalid, fpst); \ |
| 2872 | return 0; \ |
| 2873 | } \ |
| 2874 | tmp = float##fsz##_scalbn(x, shift, fpst); \ |
| 2875 | return float##fsz##_to_##itype##_round_to_zero(tmp, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2876 | } |
| 2877 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2878 | VFP_CONV_FIX(sh, d, 64, int16, ) |
| 2879 | VFP_CONV_FIX(sl, d, 64, int32, ) |
| 2880 | VFP_CONV_FIX(uh, d, 64, uint16, u) |
| 2881 | VFP_CONV_FIX(ul, d, 64, uint32, u) |
| 2882 | VFP_CONV_FIX(sh, s, 32, int16, ) |
| 2883 | VFP_CONV_FIX(sl, s, 32, int32, ) |
| 2884 | VFP_CONV_FIX(uh, s, 32, uint16, u) |
| 2885 | VFP_CONV_FIX(ul, s, 32, uint32, u) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2886 | #undef VFP_CONV_FIX |
| 2887 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2888 | /* Half precision conversions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2889 | static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2890 | { |
| 2891 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; |
| 2892 | float32 r = float16_to_float32(make_float16(a), ieee, s); |
| 2893 | if (ieee) { |
| 2894 | return float32_maybe_silence_nan(r); |
| 2895 | } |
| 2896 | return r; |
| 2897 | } |
| 2898 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2899 | static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2900 | { |
| 2901 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; |
| 2902 | float16 r = float32_to_float16(a, ieee, s); |
| 2903 | if (ieee) { |
| 2904 | r = float16_maybe_silence_nan(r); |
| 2905 | } |
| 2906 | return float16_val(r); |
| 2907 | } |
| 2908 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2909 | float32 HELPER(neon_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2910 | { |
| 2911 | return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status); |
| 2912 | } |
| 2913 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2914 | uint32_t HELPER(neon_fcvt_f32_to_f16)(float32 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2915 | { |
| 2916 | return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status); |
| 2917 | } |
| 2918 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2919 | float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2920 | { |
| 2921 | return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status); |
| 2922 | } |
| 2923 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2924 | uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2925 | { |
| 2926 | return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status); |
| 2927 | } |
| 2928 | |
| 2929 | #define float32_two make_float32(0x40000000) |
| 2930 | #define float32_three make_float32(0x40400000) |
| 2931 | #define float32_one_point_five make_float32(0x3fc00000) |
| 2932 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2933 | float32 HELPER(recps_f32)(float32 a, float32 b, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2934 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2935 | float_status *s = &env->vfp.standard_fp_status; |
| 2936 | if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || |
| 2937 | (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { |
| 2938 | if (!(float32_is_zero(a) || float32_is_zero(b))) { |
| 2939 | float_raise(float_flag_input_denormal, s); |
| 2940 | } |
| 2941 | return float32_two; |
| 2942 | } |
| 2943 | return float32_sub(float32_two, float32_mul(a, b, s), s); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2944 | } |
| 2945 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2946 | float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2947 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2948 | float_status *s = &env->vfp.standard_fp_status; |
| 2949 | float32 product; |
| 2950 | if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || |
| 2951 | (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { |
| 2952 | if (!(float32_is_zero(a) || float32_is_zero(b))) { |
| 2953 | float_raise(float_flag_input_denormal, s); |
| 2954 | } |
| 2955 | return float32_one_point_five; |
| 2956 | } |
| 2957 | product = float32_mul(a, b, s); |
| 2958 | return float32_div(float32_sub(float32_three, product, s), float32_two, s); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2959 | } |
| 2960 | |
| 2961 | /* NEON helpers. */ |
| 2962 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2963 | /* Constants 256 and 512 are used in some helpers; we avoid relying on |
| 2964 | * int->float conversions at run-time. */ |
| 2965 | #define float64_256 make_float64(0x4070000000000000LL) |
| 2966 | #define float64_512 make_float64(0x4080000000000000LL) |
| 2967 | |
| 2968 | /* The algorithm that must be used to calculate the estimate |
| 2969 | * is specified by the ARM ARM. |
| 2970 | */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2971 | static float64 recip_estimate(float64 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2972 | { |
| 2973 | /* These calculations mustn't set any fp exception flags, |
| 2974 | * so we use a local copy of the fp_status. |
| 2975 | */ |
| 2976 | float_status dummy_status = env->vfp.standard_fp_status; |
| 2977 | float_status *s = &dummy_status; |
| 2978 | /* q = (int)(a * 512.0) */ |
| 2979 | float64 q = float64_mul(float64_512, a, s); |
| 2980 | int64_t q_int = float64_to_int64_round_to_zero(q, s); |
| 2981 | |
| 2982 | /* r = 1.0 / (((double)q + 0.5) / 512.0) */ |
| 2983 | q = int64_to_float64(q_int, s); |
| 2984 | q = float64_add(q, float64_half, s); |
| 2985 | q = float64_div(q, float64_512, s); |
| 2986 | q = float64_div(float64_one, q, s); |
| 2987 | |
| 2988 | /* s = (int)(256.0 * r + 0.5) */ |
| 2989 | q = float64_mul(q, float64_256, s); |
| 2990 | q = float64_add(q, float64_half, s); |
| 2991 | q_int = float64_to_int64_round_to_zero(q, s); |
| 2992 | |
| 2993 | /* return (double)s / 256.0 */ |
| 2994 | return float64_div(int64_to_float64(q_int, s), float64_256, s); |
| 2995 | } |
| 2996 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2997 | float32 HELPER(recpe_f32)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2998 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2999 | float_status *s = &env->vfp.standard_fp_status; |
| 3000 | float64 f64; |
| 3001 | uint32_t val32 = float32_val(a); |
| 3002 | |
| 3003 | int result_exp; |
| 3004 | int a_exp = (val32 & 0x7f800000) >> 23; |
| 3005 | int sign = val32 & 0x80000000; |
| 3006 | |
| 3007 | if (float32_is_any_nan(a)) { |
| 3008 | if (float32_is_signaling_nan(a)) { |
| 3009 | float_raise(float_flag_invalid, s); |
| 3010 | } |
| 3011 | return float32_default_nan; |
| 3012 | } else if (float32_is_infinity(a)) { |
| 3013 | return float32_set_sign(float32_zero, float32_is_neg(a)); |
| 3014 | } else if (float32_is_zero_or_denormal(a)) { |
| 3015 | if (!float32_is_zero(a)) { |
| 3016 | float_raise(float_flag_input_denormal, s); |
| 3017 | } |
| 3018 | float_raise(float_flag_divbyzero, s); |
| 3019 | return float32_set_sign(float32_infinity, float32_is_neg(a)); |
| 3020 | } else if (a_exp >= 253) { |
| 3021 | float_raise(float_flag_underflow, s); |
| 3022 | return float32_set_sign(float32_zero, float32_is_neg(a)); |
| 3023 | } |
| 3024 | |
| 3025 | f64 = make_float64((0x3feULL << 52) |
| 3026 | | ((int64_t)(val32 & 0x7fffff) << 29)); |
| 3027 | |
| 3028 | result_exp = 253 - a_exp; |
| 3029 | |
| 3030 | f64 = recip_estimate(f64, env); |
| 3031 | |
| 3032 | val32 = sign |
| 3033 | | ((result_exp & 0xff) << 23) |
| 3034 | | ((float64_val(f64) >> 29) & 0x7fffff); |
| 3035 | return make_float32(val32); |
| 3036 | } |
| 3037 | |
| 3038 | /* The algorithm that must be used to calculate the estimate |
| 3039 | * is specified by the ARM ARM. |
| 3040 | */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3041 | static float64 recip_sqrt_estimate(float64 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3042 | { |
| 3043 | /* These calculations mustn't set any fp exception flags, |
| 3044 | * so we use a local copy of the fp_status. |
| 3045 | */ |
| 3046 | float_status dummy_status = env->vfp.standard_fp_status; |
| 3047 | float_status *s = &dummy_status; |
| 3048 | float64 q; |
| 3049 | int64_t q_int; |
| 3050 | |
| 3051 | if (float64_lt(a, float64_half, s)) { |
| 3052 | /* range 0.25 <= a < 0.5 */ |
| 3053 | |
| 3054 | /* a in units of 1/512 rounded down */ |
| 3055 | /* q0 = (int)(a * 512.0); */ |
| 3056 | q = float64_mul(float64_512, a, s); |
| 3057 | q_int = float64_to_int64_round_to_zero(q, s); |
| 3058 | |
| 3059 | /* reciprocal root r */ |
| 3060 | /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */ |
| 3061 | q = int64_to_float64(q_int, s); |
| 3062 | q = float64_add(q, float64_half, s); |
| 3063 | q = float64_div(q, float64_512, s); |
| 3064 | q = float64_sqrt(q, s); |
| 3065 | q = float64_div(float64_one, q, s); |
| 3066 | } else { |
| 3067 | /* range 0.5 <= a < 1.0 */ |
| 3068 | |
| 3069 | /* a in units of 1/256 rounded down */ |
| 3070 | /* q1 = (int)(a * 256.0); */ |
| 3071 | q = float64_mul(float64_256, a, s); |
| 3072 | int64_t q_int = float64_to_int64_round_to_zero(q, s); |
| 3073 | |
| 3074 | /* reciprocal root r */ |
| 3075 | /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */ |
| 3076 | q = int64_to_float64(q_int, s); |
| 3077 | q = float64_add(q, float64_half, s); |
| 3078 | q = float64_div(q, float64_256, s); |
| 3079 | q = float64_sqrt(q, s); |
| 3080 | q = float64_div(float64_one, q, s); |
| 3081 | } |
| 3082 | /* r in units of 1/256 rounded to nearest */ |
| 3083 | /* s = (int)(256.0 * r + 0.5); */ |
| 3084 | |
| 3085 | q = float64_mul(q, float64_256,s ); |
| 3086 | q = float64_add(q, float64_half, s); |
| 3087 | q_int = float64_to_int64_round_to_zero(q, s); |
| 3088 | |
| 3089 | /* return (double)s / 256.0;*/ |
| 3090 | return float64_div(int64_to_float64(q_int, s), float64_256, s); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3091 | } |
| 3092 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3093 | float32 HELPER(rsqrte_f32)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3094 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3095 | float_status *s = &env->vfp.standard_fp_status; |
| 3096 | int result_exp; |
| 3097 | float64 f64; |
| 3098 | uint32_t val; |
| 3099 | uint64_t val64; |
| 3100 | |
| 3101 | val = float32_val(a); |
| 3102 | |
| 3103 | if (float32_is_any_nan(a)) { |
| 3104 | if (float32_is_signaling_nan(a)) { |
| 3105 | float_raise(float_flag_invalid, s); |
| 3106 | } |
| 3107 | return float32_default_nan; |
| 3108 | } else if (float32_is_zero_or_denormal(a)) { |
| 3109 | if (!float32_is_zero(a)) { |
| 3110 | float_raise(float_flag_input_denormal, s); |
| 3111 | } |
| 3112 | float_raise(float_flag_divbyzero, s); |
| 3113 | return float32_set_sign(float32_infinity, float32_is_neg(a)); |
| 3114 | } else if (float32_is_neg(a)) { |
| 3115 | float_raise(float_flag_invalid, s); |
| 3116 | return float32_default_nan; |
| 3117 | } else if (float32_is_infinity(a)) { |
| 3118 | return float32_zero; |
| 3119 | } |
| 3120 | |
| 3121 | /* Normalize to a double-precision value between 0.25 and 1.0, |
| 3122 | * preserving the parity of the exponent. */ |
| 3123 | if ((val & 0x800000) == 0) { |
| 3124 | f64 = make_float64(((uint64_t)(val & 0x80000000) << 32) |
| 3125 | | (0x3feULL << 52) |
| 3126 | | ((uint64_t)(val & 0x7fffff) << 29)); |
| 3127 | } else { |
| 3128 | f64 = make_float64(((uint64_t)(val & 0x80000000) << 32) |
| 3129 | | (0x3fdULL << 52) |
| 3130 | | ((uint64_t)(val & 0x7fffff) << 29)); |
| 3131 | } |
| 3132 | |
| 3133 | result_exp = (380 - ((val & 0x7f800000) >> 23)) / 2; |
| 3134 | |
| 3135 | f64 = recip_sqrt_estimate(f64, env); |
| 3136 | |
| 3137 | val64 = float64_val(f64); |
| 3138 | |
| 3139 | val = ((val64 >> 63) & 0x80000000) |
| 3140 | | ((result_exp & 0xff) << 23) |
| 3141 | | ((val64 >> 29) & 0x7fffff); |
| 3142 | return make_float32(val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3143 | } |
| 3144 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3145 | uint32_t HELPER(recpe_u32)(uint32_t a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3146 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3147 | float64 f64; |
| 3148 | |
| 3149 | if ((a & 0x80000000) == 0) { |
| 3150 | return 0xffffffff; |
| 3151 | } |
| 3152 | |
| 3153 | f64 = make_float64((0x3feULL << 52) |
| 3154 | | ((int64_t)(a & 0x7fffffff) << 21)); |
| 3155 | |
| 3156 | f64 = recip_estimate (f64, env); |
| 3157 | |
| 3158 | return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3159 | } |
| 3160 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3161 | uint32_t HELPER(rsqrte_u32)(uint32_t a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3162 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3163 | float64 f64; |
| 3164 | |
| 3165 | if ((a & 0xc0000000) == 0) { |
| 3166 | return 0xffffffff; |
| 3167 | } |
| 3168 | |
| 3169 | if (a & 0x80000000) { |
| 3170 | f64 = make_float64((0x3feULL << 52) |
| 3171 | | ((uint64_t)(a & 0x7fffffff) << 21)); |
| 3172 | } else { /* bits 31-30 == '01' */ |
| 3173 | f64 = make_float64((0x3fdULL << 52) |
| 3174 | | ((uint64_t)(a & 0x3fffffff) << 22)); |
| 3175 | } |
| 3176 | |
| 3177 | f64 = recip_sqrt_estimate(f64, env); |
| 3178 | |
| 3179 | return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3180 | } |
| 3181 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3182 | void HELPER(set_teecr)(CPUARMState *env, uint32_t val) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3183 | { |
| 3184 | val &= 1; |
| 3185 | if (env->teecr != val) { |
| 3186 | env->teecr = val; |
| 3187 | tb_flush(env); |
| 3188 | } |
| 3189 | } |