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 | |
David 'Digit' Turner | beefcee | 2014-03-20 17:48:20 +0100 | [diff] [blame] | 42 | static uint32_t arm1176_cp15_c0_c1[8] = |
| 43 | { 0x111, 0x11, 0x33, 0, 0x01130003, 0x10030302, 0x01222100, 0 }; |
| 44 | |
| 45 | static uint32_t arm1176_cp15_c0_c2[8] = |
| 46 | { 0x0140011, 0x12002111, 0x11231121, 0x01102131, 0x01141, 0, 0, 0 }; |
| 47 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 48 | static uint32_t cpu_arm_find_by_name(const char *name); |
| 49 | |
| 50 | static inline void set_feature(CPUARMState *env, int feature) |
| 51 | { |
| 52 | env->features |= 1u << feature; |
| 53 | } |
| 54 | |
| 55 | static void cpu_reset_model_id(CPUARMState *env, uint32_t id) |
| 56 | { |
| 57 | env->cp15.c0_cpuid = id; |
| 58 | switch (id) { |
| 59 | case ARM_CPUID_ARM926: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 60 | set_feature(env, ARM_FEATURE_V4T); |
| 61 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 62 | set_feature(env, ARM_FEATURE_VFP); |
| 63 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41011090; |
| 64 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 65 | env->cp15.c1_sys = 0x00090078; |
| 66 | break; |
| 67 | case ARM_CPUID_ARM946: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 68 | set_feature(env, ARM_FEATURE_V4T); |
| 69 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 70 | set_feature(env, ARM_FEATURE_MPU); |
| 71 | env->cp15.c0_cachetype = 0x0f004006; |
| 72 | env->cp15.c1_sys = 0x00000078; |
| 73 | break; |
| 74 | case ARM_CPUID_ARM1026: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 75 | set_feature(env, ARM_FEATURE_V4T); |
| 76 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 77 | set_feature(env, ARM_FEATURE_VFP); |
| 78 | set_feature(env, ARM_FEATURE_AUXCR); |
| 79 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410110a0; |
| 80 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 81 | env->cp15.c1_sys = 0x00090078; |
| 82 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 83 | case ARM_CPUID_ARM1136: |
David 'Digit' Turner | 1811e78 | 2014-03-19 11:38:51 +0100 | [diff] [blame] | 84 | /* This is the 1136 r1, which is a v6K core */ |
| 85 | set_feature(env, ARM_FEATURE_V6K); |
| 86 | /* Fall through */ |
| 87 | case ARM_CPUID_ARM1136_R2: |
| 88 | /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an |
| 89 | * older core than plain "arm1136". In particular this does not |
| 90 | * have the v6K features. |
| 91 | */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 92 | set_feature(env, ARM_FEATURE_V4T); |
| 93 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 94 | set_feature(env, ARM_FEATURE_V6); |
| 95 | set_feature(env, ARM_FEATURE_VFP); |
| 96 | set_feature(env, ARM_FEATURE_AUXCR); |
David 'Digit' Turner | 1811e78 | 2014-03-19 11:38:51 +0100 | [diff] [blame] | 97 | /* These ID register values are correct for 1136 but may be wrong |
| 98 | * for 1136_r2 (in particular r0p2 does not actually implement most |
| 99 | * of the ID registers). |
| 100 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 101 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; |
| 102 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; |
| 103 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; |
| 104 | memcpy(env->cp15.c0_c1, arm1136_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 105 | memcpy(env->cp15.c0_c2, arm1136_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 106 | env->cp15.c0_cachetype = 0x1dd20d2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 107 | env->cp15.c1_sys = 0x00050078; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 108 | break; |
David 'Digit' Turner | beefcee | 2014-03-20 17:48:20 +0100 | [diff] [blame] | 109 | case ARM_CPUID_ARM1176: |
| 110 | set_feature(env, ARM_FEATURE_V4T); |
| 111 | set_feature(env, ARM_FEATURE_V5); |
| 112 | set_feature(env, ARM_FEATURE_V6); |
| 113 | set_feature(env, ARM_FEATURE_V6K); |
| 114 | set_feature(env, ARM_FEATURE_VFP); |
| 115 | set_feature(env, ARM_FEATURE_AUXCR); |
| 116 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b5; |
| 117 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; |
| 118 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; |
| 119 | memcpy(env->cp15.c0_c1, arm1176_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 120 | memcpy(env->cp15.c0_c2, arm1176_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 121 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 122 | env->cp15.c1_sys = 0x00050078; |
| 123 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 124 | case ARM_CPUID_ARM11MPCORE: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 125 | set_feature(env, ARM_FEATURE_V4T); |
| 126 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 127 | set_feature(env, ARM_FEATURE_V6); |
| 128 | set_feature(env, ARM_FEATURE_V6K); |
| 129 | set_feature(env, ARM_FEATURE_VFP); |
| 130 | set_feature(env, ARM_FEATURE_AUXCR); |
David 'Digit' Turner | 1811e78 | 2014-03-19 11:38:51 +0100 | [diff] [blame] | 131 | set_feature(env, ARM_FEATURE_VAPA); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 132 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; |
| 133 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; |
| 134 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; |
| 135 | memcpy(env->cp15.c0_c1, mpcore_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 136 | memcpy(env->cp15.c0_c2, mpcore_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 137 | env->cp15.c0_cachetype = 0x1dd20d2; |
| 138 | break; |
| 139 | case ARM_CPUID_CORTEXA8: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 140 | set_feature(env, ARM_FEATURE_V4T); |
| 141 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 142 | set_feature(env, ARM_FEATURE_V6); |
| 143 | set_feature(env, ARM_FEATURE_V6K); |
| 144 | set_feature(env, ARM_FEATURE_V7); |
| 145 | set_feature(env, ARM_FEATURE_AUXCR); |
| 146 | set_feature(env, ARM_FEATURE_THUMB2); |
| 147 | set_feature(env, ARM_FEATURE_VFP); |
| 148 | set_feature(env, ARM_FEATURE_VFP3); |
| 149 | set_feature(env, ARM_FEATURE_NEON); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 150 | set_feature(env, ARM_FEATURE_THUMB2EE); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 151 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 152 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c0; |
| 153 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 154 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100; |
| 155 | memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 156 | 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] | 157 | env->cp15.c0_cachetype = 0x82048004; |
| 158 | env->cp15.c0_clid = (1 << 27) | (2 << 24) | 3; |
| 159 | env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */ |
| 160 | env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */ |
| 161 | env->cp15.c0_ccsid[2] = 0xf0000000; /* No L2 icache. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 162 | env->cp15.c1_sys = 0x00c50078; |
| 163 | break; |
| 164 | case ARM_CPUID_CORTEXA8_R2: |
| 165 | set_feature(env, ARM_FEATURE_V4T); |
| 166 | set_feature(env, ARM_FEATURE_V5); |
| 167 | set_feature(env, ARM_FEATURE_V6); |
| 168 | set_feature(env, ARM_FEATURE_V6K); |
| 169 | set_feature(env, ARM_FEATURE_V7); |
| 170 | set_feature(env, ARM_FEATURE_AUXCR); |
| 171 | set_feature(env, ARM_FEATURE_THUMB2); |
| 172 | set_feature(env, ARM_FEATURE_VFP); |
| 173 | set_feature(env, ARM_FEATURE_VFP3); |
| 174 | set_feature(env, ARM_FEATURE_NEON); |
| 175 | set_feature(env, ARM_FEATURE_THUMB2EE); |
| 176 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
| 177 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c2; |
| 178 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 179 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011111; |
| 180 | memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 181 | memcpy(env->cp15.c0_c2, cortexa8r2_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 182 | env->cp15.c0_cachetype = 0x82048004; |
| 183 | env->cp15.c0_clid = (1 << 27) | (2 << 24) | (4 << 3) | 3; |
| 184 | env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */ |
| 185 | env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */ |
| 186 | env->cp15.c0_ccsid[2] = 0xf03fe03a; /* 256k L2 cache. */ |
| 187 | env->cp15.c1_sys = 0x00c50078; |
| 188 | break; |
| 189 | case ARM_CPUID_CORTEXA9: |
| 190 | set_feature(env, ARM_FEATURE_V4T); |
| 191 | set_feature(env, ARM_FEATURE_V5); |
| 192 | set_feature(env, ARM_FEATURE_V6); |
| 193 | set_feature(env, ARM_FEATURE_V6K); |
| 194 | set_feature(env, ARM_FEATURE_V7); |
| 195 | set_feature(env, ARM_FEATURE_AUXCR); |
| 196 | set_feature(env, ARM_FEATURE_THUMB2); |
| 197 | set_feature(env, ARM_FEATURE_VFP); |
| 198 | set_feature(env, ARM_FEATURE_VFP3); |
| 199 | set_feature(env, ARM_FEATURE_VFP_FP16); |
| 200 | set_feature(env, ARM_FEATURE_NEON); |
| 201 | set_feature(env, ARM_FEATURE_THUMB2EE); |
| 202 | /* Note that A9 supports the MP extensions even for |
| 203 | * A9UP and single-core A9MP (which are both different |
| 204 | * and valid configurations; we don't model A9UP). |
| 205 | */ |
| 206 | set_feature(env, ARM_FEATURE_V7MP); |
| 207 | set_feature(env, ARM_FEATURE_TRUSTZONE); |
| 208 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41034000; /* Guess */ |
| 209 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; |
| 210 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x01111111; |
| 211 | memcpy(env->cp15.c0_c1, cortexa9_cp15_c0_c1, 8 * sizeof(uint32_t)); |
| 212 | memcpy(env->cp15.c0_c2, cortexa9_cp15_c0_c2, 8 * sizeof(uint32_t)); |
| 213 | env->cp15.c0_cachetype = 0x80038003; |
| 214 | env->cp15.c0_clid = (1 << 27) | (1 << 24) | 3; |
| 215 | env->cp15.c0_ccsid[0] = 0xe00fe015; /* 16k L1 dcache. */ |
| 216 | env->cp15.c0_ccsid[1] = 0x200fe015; /* 16k L1 icache. */ |
| 217 | env->cp15.c1_sys = 0x00c50078; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 218 | break; |
| 219 | case ARM_CPUID_CORTEXM3: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 220 | set_feature(env, ARM_FEATURE_V4T); |
| 221 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 222 | set_feature(env, ARM_FEATURE_V6); |
| 223 | set_feature(env, ARM_FEATURE_THUMB2); |
| 224 | set_feature(env, ARM_FEATURE_V7); |
| 225 | set_feature(env, ARM_FEATURE_M); |
| 226 | set_feature(env, ARM_FEATURE_DIV); |
| 227 | break; |
| 228 | case ARM_CPUID_ANY: /* For userspace emulation. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 229 | set_feature(env, ARM_FEATURE_V4T); |
| 230 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 231 | set_feature(env, ARM_FEATURE_V6); |
| 232 | set_feature(env, ARM_FEATURE_V6K); |
| 233 | set_feature(env, ARM_FEATURE_V7); |
| 234 | set_feature(env, ARM_FEATURE_THUMB2); |
| 235 | set_feature(env, ARM_FEATURE_VFP); |
| 236 | set_feature(env, ARM_FEATURE_VFP3); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 237 | set_feature(env, ARM_FEATURE_VFP_FP16); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 238 | set_feature(env, ARM_FEATURE_NEON); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 239 | set_feature(env, ARM_FEATURE_THUMB2EE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 240 | set_feature(env, ARM_FEATURE_DIV); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 241 | set_feature(env, ARM_FEATURE_V7MP); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 242 | break; |
| 243 | case ARM_CPUID_TI915T: |
| 244 | case ARM_CPUID_TI925T: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 245 | set_feature(env, ARM_FEATURE_V4T); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 246 | set_feature(env, ARM_FEATURE_OMAPCP); |
| 247 | env->cp15.c0_cpuid = ARM_CPUID_TI925T; /* Depends on wiring. */ |
| 248 | env->cp15.c0_cachetype = 0x5109149; |
| 249 | env->cp15.c1_sys = 0x00000070; |
| 250 | env->cp15.c15_i_max = 0x000; |
| 251 | env->cp15.c15_i_min = 0xff0; |
| 252 | break; |
| 253 | case ARM_CPUID_PXA250: |
| 254 | case ARM_CPUID_PXA255: |
| 255 | case ARM_CPUID_PXA260: |
| 256 | case ARM_CPUID_PXA261: |
| 257 | case ARM_CPUID_PXA262: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 258 | set_feature(env, ARM_FEATURE_V4T); |
| 259 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 260 | set_feature(env, ARM_FEATURE_XSCALE); |
| 261 | /* JTAG_ID is ((id << 28) | 0x09265013) */ |
| 262 | env->cp15.c0_cachetype = 0xd172172; |
| 263 | env->cp15.c1_sys = 0x00000078; |
| 264 | break; |
| 265 | case ARM_CPUID_PXA270_A0: |
| 266 | case ARM_CPUID_PXA270_A1: |
| 267 | case ARM_CPUID_PXA270_B0: |
| 268 | case ARM_CPUID_PXA270_B1: |
| 269 | case ARM_CPUID_PXA270_C0: |
| 270 | case ARM_CPUID_PXA270_C5: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 271 | set_feature(env, ARM_FEATURE_V4T); |
| 272 | set_feature(env, ARM_FEATURE_V5); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 273 | set_feature(env, ARM_FEATURE_XSCALE); |
| 274 | /* JTAG_ID is ((id << 28) | 0x09265013) */ |
| 275 | set_feature(env, ARM_FEATURE_IWMMXT); |
| 276 | env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q'; |
| 277 | env->cp15.c0_cachetype = 0xd172172; |
| 278 | env->cp15.c1_sys = 0x00000078; |
| 279 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 280 | case ARM_CPUID_SA1100: |
| 281 | case ARM_CPUID_SA1110: |
| 282 | set_feature(env, ARM_FEATURE_STRONGARM); |
| 283 | env->cp15.c1_sys = 0x00000070; |
| 284 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 285 | default: |
| 286 | cpu_abort(env, "Bad CPU ID: %x\n", id); |
| 287 | break; |
| 288 | } |
David 'Digit' Turner | 1811e78 | 2014-03-19 11:38:51 +0100 | [diff] [blame] | 289 | |
| 290 | /* Some features automatically imply others: */ |
| 291 | if (arm_feature(env, ARM_FEATURE_V7)) { |
| 292 | set_feature(env, ARM_FEATURE_VAPA); |
| 293 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 294 | } |
| 295 | |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 296 | void cpu_reset(CPUState *cpu) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 297 | { |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 298 | CPUARMState *env = cpu->env_ptr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 299 | uint32_t id; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 300 | |
| 301 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 302 | qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index); |
| 303 | log_cpu_state(cpu, 0); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 304 | } |
| 305 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 306 | id = env->cp15.c0_cpuid; |
| 307 | memset(env, 0, offsetof(CPUARMState, breakpoints)); |
| 308 | if (id) |
| 309 | cpu_reset_model_id(env, id); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 310 | /* DBGDIDR : we implement nothing, and just mirror the main ID |
| 311 | * register's Variant and Revision fields. |
| 312 | */ |
| 313 | env->cp14_dbgdidr = (id >> 16 & 0xf0) | 0xf; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 314 | #if defined (CONFIG_USER_ONLY) |
| 315 | env->uncached_cpsr = ARM_CPU_MODE_USR; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 316 | /* For user mode we must enable access to coprocessors */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 317 | env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 318 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
| 319 | env->cp15.c15_cpar = 3; |
| 320 | } else if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 321 | env->cp15.c15_cpar = 1; |
| 322 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 323 | #else |
| 324 | /* SVC mode with interrupts disabled. */ |
| 325 | env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I; |
| 326 | /* 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] | 327 | clear at reset. Initial SP and PC are loaded from ROM. */ |
| 328 | if (IS_M(env)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 329 | env->uncached_cpsr &= ~CPSR_I; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 330 | #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] | 331 | uint32_t pc; |
| 332 | uint8_t *rom; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 333 | rom = rom_ptr(0); |
| 334 | if (rom) { |
| 335 | /* We should really use ldl_phys here, in case the guest |
| 336 | modified flash and reset itself. However images |
| 337 | loaded via -kenrel have not been copied yet, so load the |
| 338 | values directly from there. */ |
| 339 | env->regs[13] = ldl_p(rom); |
| 340 | pc = ldl_p(rom + 4); |
| 341 | env->thumb = pc & 1; |
| 342 | env->regs[15] = pc & ~1; |
| 343 | } |
| 344 | #endif |
| 345 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 346 | env->vfp.xregs[ARM_VFP_FPEXC] = 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 347 | env->cp15.c2_base_mask = 0xffffc000u; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 348 | /* v7 performance monitor control register: same implementor |
| 349 | * field as main ID register, and we implement no event counters. |
| 350 | */ |
| 351 | env->cp15.c9_pmcr = (id & 0xff000000); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 352 | #endif |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 353 | set_flush_to_zero(1, &env->vfp.standard_fp_status); |
| 354 | set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status); |
| 355 | set_default_nan_mode(1, &env->vfp.standard_fp_status); |
| 356 | set_float_detect_tininess(float_tininess_before_rounding, |
| 357 | &env->vfp.fp_status); |
| 358 | set_float_detect_tininess(float_tininess_before_rounding, |
| 359 | &env->vfp.standard_fp_status); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 360 | tlb_flush(env, 1); |
| 361 | } |
| 362 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 363 | 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] | 364 | { |
| 365 | int nregs; |
| 366 | |
| 367 | /* VFP data registers are always little-endian. */ |
| 368 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; |
| 369 | if (reg < nregs) { |
| 370 | stfq_le_p(buf, env->vfp.regs[reg]); |
| 371 | return 8; |
| 372 | } |
| 373 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
| 374 | /* Aliases for Q regs. */ |
| 375 | nregs += 16; |
| 376 | if (reg < nregs) { |
| 377 | stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]); |
| 378 | stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]); |
| 379 | return 16; |
| 380 | } |
| 381 | } |
| 382 | switch (reg - nregs) { |
| 383 | case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4; |
| 384 | case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4; |
| 385 | case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4; |
| 386 | } |
| 387 | return 0; |
| 388 | } |
| 389 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 390 | 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] | 391 | { |
| 392 | int nregs; |
| 393 | |
| 394 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; |
| 395 | if (reg < nregs) { |
| 396 | env->vfp.regs[reg] = ldfq_le_p(buf); |
| 397 | return 8; |
| 398 | } |
| 399 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
| 400 | nregs += 16; |
| 401 | if (reg < nregs) { |
| 402 | env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf); |
| 403 | env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8); |
| 404 | return 16; |
| 405 | } |
| 406 | } |
| 407 | switch (reg - nregs) { |
| 408 | case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4; |
| 409 | 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] | 410 | 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] | 411 | } |
| 412 | return 0; |
| 413 | } |
| 414 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 415 | CPUARMState *cpu_arm_init(const char *cpu_model) |
| 416 | { |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 417 | ARMCPU *arm_cpu; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 418 | CPUARMState *env; |
| 419 | uint32_t id; |
| 420 | static int inited = 0; |
| 421 | |
| 422 | id = cpu_arm_find_by_name(cpu_model); |
| 423 | if (id == 0) |
| 424 | return NULL; |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 425 | arm_cpu = g_malloc0(sizeof(ARMCPU)); |
| 426 | env = &arm_cpu->env; |
| 427 | ENV_GET_CPU(env)->env_ptr = env; |
| 428 | |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 429 | CPUState *cpu = ENV_GET_CPU(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 430 | cpu_exec_init(env); |
| 431 | if (!inited) { |
| 432 | inited = 1; |
| 433 | arm_translate_init(); |
| 434 | } |
| 435 | |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 436 | cpu->cpu_model_str = cpu_model; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 437 | env->cp15.c0_cpuid = id; |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 438 | cpu_reset(cpu); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 439 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
David 'Digit' Turner | 0b1a845 | 2014-03-25 17:37:52 +0100 | [diff] [blame] | 440 | gdb_register_coprocessor(cpu, vfp_gdb_get_reg, vfp_gdb_set_reg, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 441 | 51, "arm-neon.xml", 0); |
| 442 | } else if (arm_feature(env, ARM_FEATURE_VFP3)) { |
David 'Digit' Turner | 0b1a845 | 2014-03-25 17:37:52 +0100 | [diff] [blame] | 443 | gdb_register_coprocessor(cpu, vfp_gdb_get_reg, vfp_gdb_set_reg, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 444 | 35, "arm-vfp3.xml", 0); |
| 445 | } else if (arm_feature(env, ARM_FEATURE_VFP)) { |
David 'Digit' Turner | 0b1a845 | 2014-03-25 17:37:52 +0100 | [diff] [blame] | 446 | gdb_register_coprocessor(cpu, vfp_gdb_get_reg, vfp_gdb_set_reg, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 447 | 19, "arm-vfp.xml", 0); |
| 448 | } |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 449 | qemu_init_vcpu(cpu); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 450 | return env; |
| 451 | } |
| 452 | |
| 453 | struct arm_cpu_t { |
| 454 | uint32_t id; |
| 455 | const char *name; |
| 456 | }; |
| 457 | |
| 458 | static const struct arm_cpu_t arm_cpu_names[] = { |
| 459 | { ARM_CPUID_ARM926, "arm926"}, |
| 460 | { ARM_CPUID_ARM946, "arm946"}, |
| 461 | { ARM_CPUID_ARM1026, "arm1026"}, |
| 462 | { ARM_CPUID_ARM1136, "arm1136"}, |
| 463 | { ARM_CPUID_ARM1136_R2, "arm1136-r2"}, |
David 'Digit' Turner | beefcee | 2014-03-20 17:48:20 +0100 | [diff] [blame] | 464 | { ARM_CPUID_ARM1176, "arm1176"}, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 465 | { ARM_CPUID_ARM11MPCORE, "arm11mpcore"}, |
| 466 | { ARM_CPUID_CORTEXM3, "cortex-m3"}, |
| 467 | { ARM_CPUID_CORTEXA8, "cortex-a8"}, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 468 | { ARM_CPUID_CORTEXA8_R2, "cortex-a8-r2"}, |
| 469 | { ARM_CPUID_CORTEXA9, "cortex-a9"}, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 470 | { ARM_CPUID_TI925T, "ti925t" }, |
| 471 | { ARM_CPUID_PXA250, "pxa250" }, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 472 | { ARM_CPUID_SA1100, "sa1100" }, |
| 473 | { ARM_CPUID_SA1110, "sa1110" }, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 474 | { ARM_CPUID_PXA255, "pxa255" }, |
| 475 | { ARM_CPUID_PXA260, "pxa260" }, |
| 476 | { ARM_CPUID_PXA261, "pxa261" }, |
| 477 | { ARM_CPUID_PXA262, "pxa262" }, |
| 478 | { ARM_CPUID_PXA270, "pxa270" }, |
| 479 | { ARM_CPUID_PXA270_A0, "pxa270-a0" }, |
| 480 | { ARM_CPUID_PXA270_A1, "pxa270-a1" }, |
| 481 | { ARM_CPUID_PXA270_B0, "pxa270-b0" }, |
| 482 | { ARM_CPUID_PXA270_B1, "pxa270-b1" }, |
| 483 | { ARM_CPUID_PXA270_C0, "pxa270-c0" }, |
| 484 | { ARM_CPUID_PXA270_C5, "pxa270-c5" }, |
| 485 | { ARM_CPUID_ANY, "any"}, |
| 486 | { 0, NULL} |
| 487 | }; |
| 488 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 489 | 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] | 490 | { |
| 491 | int i; |
| 492 | |
| 493 | (*cpu_fprintf)(f, "Available CPUs:\n"); |
| 494 | for (i = 0; arm_cpu_names[i].name; i++) { |
| 495 | (*cpu_fprintf)(f, " %s\n", arm_cpu_names[i].name); |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /* return 0 if not found */ |
| 500 | static uint32_t cpu_arm_find_by_name(const char *name) |
| 501 | { |
| 502 | int i; |
| 503 | uint32_t id; |
| 504 | |
| 505 | id = 0; |
| 506 | for (i = 0; arm_cpu_names[i].name; i++) { |
| 507 | if (strcmp(name, arm_cpu_names[i].name) == 0) { |
| 508 | id = arm_cpu_names[i].id; |
| 509 | break; |
| 510 | } |
| 511 | } |
| 512 | return id; |
| 513 | } |
| 514 | |
| 515 | void cpu_arm_close(CPUARMState *env) |
| 516 | { |
| 517 | free(env); |
| 518 | } |
| 519 | |
| 520 | uint32_t cpsr_read(CPUARMState *env) |
| 521 | { |
| 522 | int ZF; |
| 523 | ZF = (env->ZF == 0); |
| 524 | return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) | |
| 525 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) |
| 526 | | (env->thumb << 5) | ((env->condexec_bits & 3) << 25) |
| 527 | | ((env->condexec_bits & 0xfc) << 8) |
| 528 | | (env->GE << 16); |
| 529 | } |
| 530 | |
| 531 | void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) |
| 532 | { |
| 533 | if (mask & CPSR_NZCV) { |
| 534 | env->ZF = (~val) & CPSR_Z; |
| 535 | env->NF = val; |
| 536 | env->CF = (val >> 29) & 1; |
| 537 | env->VF = (val << 3) & 0x80000000; |
| 538 | } |
| 539 | if (mask & CPSR_Q) |
| 540 | env->QF = ((val & CPSR_Q) != 0); |
| 541 | if (mask & CPSR_T) |
| 542 | env->thumb = ((val & CPSR_T) != 0); |
| 543 | if (mask & CPSR_IT_0_1) { |
| 544 | env->condexec_bits &= ~3; |
| 545 | env->condexec_bits |= (val >> 25) & 3; |
| 546 | } |
| 547 | if (mask & CPSR_IT_2_7) { |
| 548 | env->condexec_bits &= 3; |
| 549 | env->condexec_bits |= (val >> 8) & 0xfc; |
| 550 | } |
| 551 | if (mask & CPSR_GE) { |
| 552 | env->GE = (val >> 16) & 0xf; |
| 553 | } |
| 554 | |
| 555 | if ((env->uncached_cpsr ^ val) & mask & CPSR_M) { |
| 556 | switch_mode(env, val & CPSR_M); |
| 557 | } |
| 558 | mask &= ~CACHED_CPSR_BITS; |
| 559 | env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask); |
| 560 | } |
| 561 | |
| 562 | /* Sign/zero extend */ |
| 563 | uint32_t HELPER(sxtb16)(uint32_t x) |
| 564 | { |
| 565 | uint32_t res; |
| 566 | res = (uint16_t)(int8_t)x; |
| 567 | res |= (uint32_t)(int8_t)(x >> 16) << 16; |
| 568 | return res; |
| 569 | } |
| 570 | |
| 571 | uint32_t HELPER(uxtb16)(uint32_t x) |
| 572 | { |
| 573 | uint32_t res; |
| 574 | res = (uint16_t)(uint8_t)x; |
| 575 | res |= (uint32_t)(uint8_t)(x >> 16) << 16; |
| 576 | return res; |
| 577 | } |
| 578 | |
| 579 | uint32_t HELPER(clz)(uint32_t x) |
| 580 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 581 | return clz32(x); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | int32_t HELPER(sdiv)(int32_t num, int32_t den) |
| 585 | { |
| 586 | if (den == 0) |
| 587 | return 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 588 | if (num == INT_MIN && den == -1) |
| 589 | return INT_MIN; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 590 | return num / den; |
| 591 | } |
| 592 | |
| 593 | uint32_t HELPER(udiv)(uint32_t num, uint32_t den) |
| 594 | { |
| 595 | if (den == 0) |
| 596 | return 0; |
| 597 | return num / den; |
| 598 | } |
| 599 | |
| 600 | uint32_t HELPER(rbit)(uint32_t x) |
| 601 | { |
| 602 | x = ((x & 0xff000000) >> 24) |
| 603 | | ((x & 0x00ff0000) >> 8) |
| 604 | | ((x & 0x0000ff00) << 8) |
| 605 | | ((x & 0x000000ff) << 24); |
| 606 | x = ((x & 0xf0f0f0f0) >> 4) |
| 607 | | ((x & 0x0f0f0f0f) << 4); |
| 608 | x = ((x & 0x88888888) >> 3) |
| 609 | | ((x & 0x44444444) >> 1) |
| 610 | | ((x & 0x22222222) << 1) |
| 611 | | ((x & 0x11111111) << 3); |
| 612 | return x; |
| 613 | } |
| 614 | |
| 615 | uint32_t HELPER(abs)(uint32_t x) |
| 616 | { |
| 617 | return ((int32_t)x < 0) ? -x : x; |
| 618 | } |
| 619 | |
| 620 | #if defined(CONFIG_USER_ONLY) |
| 621 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 622 | void do_interrupt (CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 623 | { |
| 624 | env->exception_index = -1; |
| 625 | } |
| 626 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 627 | int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw, |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 628 | int mmu_idx) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 629 | { |
| 630 | if (rw == 2) { |
| 631 | env->exception_index = EXCP_PREFETCH_ABORT; |
| 632 | env->cp15.c6_insn = address; |
| 633 | } else { |
| 634 | env->exception_index = EXCP_DATA_ABORT; |
| 635 | env->cp15.c6_data = address; |
| 636 | } |
| 637 | return 1; |
| 638 | } |
| 639 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 640 | /* These should probably raise undefined insn exceptions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 641 | 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] | 642 | { |
| 643 | cpu_abort(env, "cp15 insn %08x\n", insn); |
| 644 | } |
| 645 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 646 | 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] | 647 | { |
| 648 | cpu_abort(env, "cp15 insn %08x\n", insn); |
| 649 | return 0; |
| 650 | } |
| 651 | |
| 652 | /* These should probably raise undefined insn exceptions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 653 | 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] | 654 | { |
| 655 | cpu_abort(env, "v7m_mrs %d\n", reg); |
| 656 | } |
| 657 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 658 | 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] | 659 | { |
| 660 | cpu_abort(env, "v7m_mrs %d\n", reg); |
| 661 | return 0; |
| 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 | if (mode != ARM_CPU_MODE_USR) |
| 667 | cpu_abort(env, "Tried to switch out of user mode\n"); |
| 668 | } |
| 669 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 670 | 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] | 671 | { |
| 672 | cpu_abort(env, "banked r13 write\n"); |
| 673 | } |
| 674 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 675 | 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] | 676 | { |
| 677 | cpu_abort(env, "banked r13 read\n"); |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | #else |
| 682 | |
| 683 | extern int semihosting_enabled; |
| 684 | |
| 685 | /* Map CPU modes onto saved register banks. */ |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 686 | static inline int bank_number (CPUARMState *env, int mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 687 | { |
| 688 | switch (mode) { |
| 689 | case ARM_CPU_MODE_USR: |
| 690 | case ARM_CPU_MODE_SYS: |
| 691 | return 0; |
| 692 | case ARM_CPU_MODE_SVC: |
| 693 | return 1; |
| 694 | case ARM_CPU_MODE_ABT: |
| 695 | return 2; |
| 696 | case ARM_CPU_MODE_UND: |
| 697 | return 3; |
| 698 | case ARM_CPU_MODE_IRQ: |
| 699 | return 4; |
| 700 | case ARM_CPU_MODE_FIQ: |
| 701 | return 5; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 702 | case ARM_CPU_MODE_SMC: |
| 703 | return 6; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 704 | } |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 705 | cpu_abort(env, "Bad mode %x\n", mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 706 | return -1; |
| 707 | } |
| 708 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 709 | void switch_mode(CPUARMState *env, int mode) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 710 | { |
| 711 | int old_mode; |
| 712 | int i; |
| 713 | |
| 714 | old_mode = env->uncached_cpsr & CPSR_M; |
| 715 | if (mode == old_mode) |
| 716 | return; |
| 717 | |
| 718 | if (old_mode == ARM_CPU_MODE_FIQ) { |
| 719 | memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t)); |
| 720 | memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t)); |
| 721 | } else if (mode == ARM_CPU_MODE_FIQ) { |
| 722 | memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t)); |
| 723 | memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t)); |
| 724 | } |
| 725 | |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 726 | i = bank_number(env, old_mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 727 | env->banked_r13[i] = env->regs[13]; |
| 728 | env->banked_r14[i] = env->regs[14]; |
| 729 | env->banked_spsr[i] = env->spsr; |
| 730 | |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 731 | i = bank_number(env, mode); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 732 | env->regs[13] = env->banked_r13[i]; |
| 733 | env->regs[14] = env->banked_r14[i]; |
| 734 | env->spsr = env->banked_spsr[i]; |
| 735 | } |
| 736 | |
| 737 | static void v7m_push(CPUARMState *env, uint32_t val) |
| 738 | { |
| 739 | env->regs[13] -= 4; |
| 740 | stl_phys(env->regs[13], val); |
| 741 | } |
| 742 | |
| 743 | static uint32_t v7m_pop(CPUARMState *env) |
| 744 | { |
| 745 | uint32_t val; |
| 746 | val = ldl_phys(env->regs[13]); |
| 747 | env->regs[13] += 4; |
| 748 | return val; |
| 749 | } |
| 750 | |
| 751 | /* Switch to V7M main or process stack pointer. */ |
| 752 | static void switch_v7m_sp(CPUARMState *env, int process) |
| 753 | { |
| 754 | uint32_t tmp; |
| 755 | if (env->v7m.current_sp != process) { |
| 756 | tmp = env->v7m.other_sp; |
| 757 | env->v7m.other_sp = env->regs[13]; |
| 758 | env->regs[13] = tmp; |
| 759 | env->v7m.current_sp = process; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | static void do_v7m_exception_exit(CPUARMState *env) |
| 764 | { |
| 765 | uint32_t type; |
| 766 | uint32_t xpsr; |
| 767 | |
| 768 | type = env->regs[15]; |
| 769 | if (env->v7m.exception != 0) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 770 | armv7m_nvic_complete_irq(env->nvic, env->v7m.exception); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 771 | |
| 772 | /* Switch to the target stack. */ |
| 773 | switch_v7m_sp(env, (type & 4) != 0); |
| 774 | /* Pop registers. */ |
| 775 | env->regs[0] = v7m_pop(env); |
| 776 | env->regs[1] = v7m_pop(env); |
| 777 | env->regs[2] = v7m_pop(env); |
| 778 | env->regs[3] = v7m_pop(env); |
| 779 | env->regs[12] = v7m_pop(env); |
| 780 | env->regs[14] = v7m_pop(env); |
| 781 | env->regs[15] = v7m_pop(env); |
| 782 | xpsr = v7m_pop(env); |
| 783 | xpsr_write(env, xpsr, 0xfffffdff); |
| 784 | /* Undo stack alignment. */ |
| 785 | if (xpsr & 0x200) |
| 786 | env->regs[13] |= 4; |
| 787 | /* ??? The exception return type specifies Thread/Handler mode. However |
| 788 | this is also implied by the xPSR value. Not sure what to do |
| 789 | if there is a mismatch. */ |
| 790 | /* ??? Likewise for mismatches between the CONTROL register and the stack |
| 791 | pointer. */ |
| 792 | } |
| 793 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 794 | static void do_interrupt_v7m(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 795 | { |
| 796 | uint32_t xpsr = xpsr_read(env); |
| 797 | uint32_t lr; |
| 798 | uint32_t addr; |
| 799 | |
| 800 | lr = 0xfffffff1; |
| 801 | if (env->v7m.current_sp) |
| 802 | lr |= 4; |
| 803 | if (env->v7m.exception == 0) |
| 804 | lr |= 8; |
| 805 | |
| 806 | /* For exceptions we just mark as pending on the NVIC, and let that |
| 807 | handle it. */ |
| 808 | /* TODO: Need to escalate if the current priority is higher than the |
| 809 | one we're raising. */ |
| 810 | switch (env->exception_index) { |
| 811 | case EXCP_UDEF: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 812 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 813 | return; |
| 814 | case EXCP_SWI: |
| 815 | env->regs[15] += 2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 816 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 817 | return; |
| 818 | case EXCP_PREFETCH_ABORT: |
| 819 | case EXCP_DATA_ABORT: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 820 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 821 | return; |
| 822 | case EXCP_BKPT: |
| 823 | if (semihosting_enabled) { |
| 824 | int nr; |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 825 | nr = cpu_lduw_code(env, env->regs[15]) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 826 | if (nr == 0xab) { |
| 827 | env->regs[15] += 2; |
| 828 | env->regs[0] = do_arm_semihosting(env); |
| 829 | return; |
| 830 | } |
| 831 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 832 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 833 | return; |
| 834 | case EXCP_IRQ: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 835 | env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 836 | break; |
| 837 | case EXCP_EXCEPTION_EXIT: |
| 838 | do_v7m_exception_exit(env); |
| 839 | return; |
| 840 | default: |
| 841 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); |
| 842 | return; /* Never happens. Keep compiler happy. */ |
| 843 | } |
| 844 | |
| 845 | /* Align stack pointer. */ |
| 846 | /* ??? Should only do this if Configuration Control Register |
| 847 | STACKALIGN bit is set. */ |
| 848 | if (env->regs[13] & 4) { |
| 849 | env->regs[13] -= 4; |
| 850 | xpsr |= 0x200; |
| 851 | } |
| 852 | /* Switch to the handler mode. */ |
| 853 | v7m_push(env, xpsr); |
| 854 | v7m_push(env, env->regs[15]); |
| 855 | v7m_push(env, env->regs[14]); |
| 856 | v7m_push(env, env->regs[12]); |
| 857 | v7m_push(env, env->regs[3]); |
| 858 | v7m_push(env, env->regs[2]); |
| 859 | v7m_push(env, env->regs[1]); |
| 860 | v7m_push(env, env->regs[0]); |
| 861 | switch_v7m_sp(env, 0); |
| 862 | env->uncached_cpsr &= ~CPSR_IT; |
| 863 | env->regs[14] = lr; |
| 864 | addr = ldl_phys(env->v7m.vecbase + env->v7m.exception * 4); |
| 865 | env->regs[15] = addr & 0xfffffffe; |
| 866 | env->thumb = addr & 1; |
| 867 | } |
| 868 | |
| 869 | /* Handle a CPU exception. */ |
| 870 | void do_interrupt(CPUARMState *env) |
| 871 | { |
| 872 | uint32_t addr; |
| 873 | uint32_t mask; |
| 874 | int new_mode; |
| 875 | uint32_t offset; |
| 876 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 877 | if (IS_M(env)) { |
| 878 | do_interrupt_v7m(env); |
| 879 | return; |
| 880 | } |
| 881 | /* TODO: Vectored interrupt controller. */ |
| 882 | switch (env->exception_index) { |
| 883 | case EXCP_UDEF: |
| 884 | new_mode = ARM_CPU_MODE_UND; |
| 885 | addr = 0x04; |
| 886 | mask = CPSR_I; |
| 887 | if (env->thumb) |
| 888 | offset = 2; |
| 889 | else |
| 890 | offset = 4; |
| 891 | break; |
| 892 | case EXCP_SWI: |
| 893 | if (semihosting_enabled) { |
| 894 | /* Check for semihosting interrupt. */ |
| 895 | if (env->thumb) { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 896 | 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] | 897 | } else { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 898 | 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] | 899 | } |
| 900 | /* Only intercept calls from privileged modes, to provide some |
| 901 | semblance of security. */ |
| 902 | if (((mask == 0x123456 && !env->thumb) |
| 903 | || (mask == 0xab && env->thumb)) |
| 904 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { |
| 905 | env->regs[0] = do_arm_semihosting(env); |
| 906 | return; |
| 907 | } |
| 908 | } |
| 909 | new_mode = ARM_CPU_MODE_SVC; |
| 910 | addr = 0x08; |
| 911 | mask = CPSR_I; |
| 912 | /* The PC already points to the next instruction. */ |
| 913 | offset = 0; |
| 914 | break; |
| 915 | case EXCP_BKPT: |
| 916 | /* See if this is a semihosting syscall. */ |
| 917 | if (env->thumb && semihosting_enabled) { |
David 'Digit' Turner | eca7bc2 | 2014-03-14 23:58:39 +0100 | [diff] [blame] | 918 | mask = cpu_lduw_code(env, env->regs[15]) & 0xff; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 919 | if (mask == 0xab |
| 920 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { |
| 921 | env->regs[15] += 2; |
| 922 | env->regs[0] = do_arm_semihosting(env); |
| 923 | return; |
| 924 | } |
| 925 | } |
| 926 | /* Fall through to prefetch abort. */ |
| 927 | case EXCP_PREFETCH_ABORT: |
| 928 | new_mode = ARM_CPU_MODE_ABT; |
| 929 | addr = 0x0c; |
| 930 | mask = CPSR_A | CPSR_I; |
| 931 | offset = 4; |
| 932 | break; |
| 933 | case EXCP_DATA_ABORT: |
| 934 | new_mode = ARM_CPU_MODE_ABT; |
| 935 | addr = 0x10; |
| 936 | mask = CPSR_A | CPSR_I; |
| 937 | offset = 8; |
| 938 | break; |
| 939 | case EXCP_IRQ: |
| 940 | new_mode = ARM_CPU_MODE_IRQ; |
| 941 | addr = 0x18; |
| 942 | /* Disable IRQ and imprecise data aborts. */ |
| 943 | mask = CPSR_A | CPSR_I; |
| 944 | offset = 4; |
| 945 | break; |
| 946 | case EXCP_FIQ: |
| 947 | new_mode = ARM_CPU_MODE_FIQ; |
| 948 | addr = 0x1c; |
| 949 | /* Disable FIQ, IRQ and imprecise data aborts. */ |
| 950 | mask = CPSR_A | CPSR_I | CPSR_F; |
| 951 | offset = 4; |
| 952 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 953 | case EXCP_SMC: |
| 954 | if (semihosting_enabled) { |
| 955 | cpu_abort(env, "SMC handling under semihosting not implemented\n"); |
| 956 | return; |
| 957 | } |
| 958 | if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_SMC) { |
| 959 | env->cp15.c1_secfg &= ~1; |
| 960 | } |
| 961 | offset = env->thumb ? 2 : 0; |
| 962 | new_mode = ARM_CPU_MODE_SMC; |
| 963 | addr = 0x08; |
| 964 | mask = CPSR_A | CPSR_I | CPSR_F; |
| 965 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 966 | default: |
| 967 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); |
| 968 | return; /* Never happens. Keep compiler happy. */ |
| 969 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 970 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 971 | if (new_mode == ARM_CPU_MODE_SMC || |
| 972 | (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_SMC) { |
| 973 | addr += env->cp15.c12_mvbar; |
| 974 | } else { |
| 975 | if (env->cp15.c1_sys & (1 << 13)) { |
| 976 | addr += 0xffff0000; |
| 977 | } else { |
| 978 | addr += env->cp15.c12_vbar; |
| 979 | } |
| 980 | } |
| 981 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 982 | /* High vectors. */ |
| 983 | if (env->cp15.c1_sys & (1 << 13)) { |
| 984 | addr += 0xffff0000; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 985 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 986 | } |
| 987 | switch_mode (env, new_mode); |
| 988 | env->spsr = cpsr_read(env); |
| 989 | /* Clear IT bits. */ |
| 990 | env->condexec_bits = 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 991 | /* 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] | 992 | env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode; |
| 993 | env->uncached_cpsr |= mask; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 994 | /* this is a lie, as the was no c1_sys on V4T/V5, but who cares |
| 995 | * and we should just guard the thumb mode on V4 */ |
| 996 | if (arm_feature(env, ARM_FEATURE_V4T)) { |
| 997 | env->thumb = (env->cp15.c1_sys & (1 << 30)) != 0; |
| 998 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 999 | env->regs[14] = env->regs[15] + offset; |
| 1000 | env->regs[15] = addr; |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 1001 | ENV_GET_CPU(env)->interrupt_request |= CPU_INTERRUPT_EXITTB; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | /* Check section/page access permissions. |
| 1005 | Returns the page protection flags, or zero if the access is not |
| 1006 | permitted. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1007 | 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] | 1008 | int is_user) |
| 1009 | { |
| 1010 | int prot_ro; |
| 1011 | |
| 1012 | if (domain == 3) |
| 1013 | return PAGE_READ | PAGE_WRITE; |
| 1014 | |
| 1015 | if (access_type == 1) |
| 1016 | prot_ro = 0; |
| 1017 | else |
| 1018 | prot_ro = PAGE_READ; |
| 1019 | |
| 1020 | switch (ap) { |
| 1021 | case 0: |
| 1022 | if (access_type == 1) |
| 1023 | return 0; |
| 1024 | switch ((env->cp15.c1_sys >> 8) & 3) { |
| 1025 | case 1: |
| 1026 | return is_user ? 0 : PAGE_READ; |
| 1027 | case 2: |
| 1028 | return PAGE_READ; |
| 1029 | default: |
| 1030 | return 0; |
| 1031 | } |
| 1032 | case 1: |
| 1033 | return is_user ? 0 : PAGE_READ | PAGE_WRITE; |
| 1034 | case 2: |
| 1035 | if (is_user) |
| 1036 | return prot_ro; |
| 1037 | else |
| 1038 | return PAGE_READ | PAGE_WRITE; |
| 1039 | case 3: |
| 1040 | return PAGE_READ | PAGE_WRITE; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1041 | case 4: /* Reserved. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1042 | return 0; |
| 1043 | case 5: |
| 1044 | return is_user ? 0 : prot_ro; |
| 1045 | case 6: |
| 1046 | return prot_ro; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1047 | case 7: |
David 'Digit' Turner | beefcee | 2014-03-20 17:48:20 +0100 | [diff] [blame] | 1048 | if (!arm_feature (env, ARM_FEATURE_V6K)) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1049 | return 0; |
| 1050 | return prot_ro; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1051 | default: |
| 1052 | abort(); |
| 1053 | } |
| 1054 | } |
| 1055 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1056 | 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] | 1057 | { |
| 1058 | uint32_t table; |
| 1059 | |
| 1060 | if (address & env->cp15.c2_mask) |
| 1061 | table = env->cp15.c2_base1 & 0xffffc000; |
| 1062 | else |
| 1063 | table = env->cp15.c2_base0 & env->cp15.c2_base_mask; |
| 1064 | |
| 1065 | table |= (address >> 18) & 0x3ffc; |
| 1066 | return table; |
| 1067 | } |
| 1068 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1069 | 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] | 1070 | int is_user, uint32_t *phys_ptr, int *prot, |
| 1071 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1072 | { |
| 1073 | int code; |
| 1074 | uint32_t table; |
| 1075 | uint32_t desc; |
| 1076 | int type; |
| 1077 | int ap; |
| 1078 | int domain; |
| 1079 | uint32_t phys_addr; |
| 1080 | |
| 1081 | /* Pagetable walk. */ |
| 1082 | /* Lookup l1 descriptor. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1083 | table = get_level1_table_address(env, address); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1084 | desc = ldl_phys(table); |
| 1085 | type = (desc & 3); |
| 1086 | domain = (env->cp15.c3 >> ((desc >> 4) & 0x1e)) & 3; |
| 1087 | if (type == 0) { |
| 1088 | /* Section translation fault. */ |
| 1089 | code = 5; |
| 1090 | goto do_fault; |
| 1091 | } |
| 1092 | if (domain == 0 || domain == 2) { |
| 1093 | if (type == 2) |
| 1094 | code = 9; /* Section domain fault. */ |
| 1095 | else |
| 1096 | code = 11; /* Page domain fault. */ |
| 1097 | goto do_fault; |
| 1098 | } |
| 1099 | if (type == 2) { |
| 1100 | /* 1Mb section. */ |
| 1101 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); |
| 1102 | ap = (desc >> 10) & 3; |
| 1103 | code = 13; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1104 | *page_size = 1024 * 1024; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1105 | } else { |
| 1106 | /* Lookup l2 entry. */ |
| 1107 | if (type == 1) { |
| 1108 | /* Coarse pagetable. */ |
| 1109 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); |
| 1110 | } else { |
| 1111 | /* Fine pagetable. */ |
| 1112 | table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); |
| 1113 | } |
| 1114 | desc = ldl_phys(table); |
| 1115 | switch (desc & 3) { |
| 1116 | case 0: /* Page translation fault. */ |
| 1117 | code = 7; |
| 1118 | goto do_fault; |
| 1119 | case 1: /* 64k page. */ |
| 1120 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); |
| 1121 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1122 | *page_size = 0x10000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1123 | break; |
| 1124 | case 2: /* 4k page. */ |
| 1125 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1126 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1127 | *page_size = 0x1000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1128 | break; |
| 1129 | case 3: /* 1k page. */ |
| 1130 | if (type == 1) { |
| 1131 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1132 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1133 | } else { |
| 1134 | /* Page translation fault. */ |
| 1135 | code = 7; |
| 1136 | goto do_fault; |
| 1137 | } |
| 1138 | } else { |
| 1139 | phys_addr = (desc & 0xfffffc00) | (address & 0x3ff); |
| 1140 | } |
| 1141 | ap = (desc >> 4) & 3; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1142 | *page_size = 0x400; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1143 | break; |
| 1144 | default: |
| 1145 | /* Never happens, but compiler isn't smart enough to tell. */ |
| 1146 | abort(); |
| 1147 | } |
| 1148 | code = 15; |
| 1149 | } |
| 1150 | *prot = check_ap(env, ap, domain, access_type, is_user); |
| 1151 | if (!*prot) { |
| 1152 | /* Access permission fault. */ |
| 1153 | goto do_fault; |
| 1154 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1155 | *prot |= PAGE_EXEC; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1156 | *phys_ptr = phys_addr; |
| 1157 | return 0; |
| 1158 | do_fault: |
| 1159 | return code | (domain << 4); |
| 1160 | } |
| 1161 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1162 | 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] | 1163 | int is_user, uint32_t *phys_ptr, int *prot, |
| 1164 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1165 | { |
| 1166 | int code; |
| 1167 | uint32_t table; |
| 1168 | uint32_t desc; |
| 1169 | uint32_t xn; |
| 1170 | int type; |
| 1171 | int ap; |
| 1172 | int domain; |
| 1173 | uint32_t phys_addr; |
| 1174 | |
| 1175 | /* Pagetable walk. */ |
| 1176 | /* Lookup l1 descriptor. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1177 | table = get_level1_table_address(env, address); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1178 | desc = ldl_phys(table); |
| 1179 | type = (desc & 3); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1180 | if (type == 0 || type == 3) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1181 | /* Section translation fault. */ |
| 1182 | code = 5; |
| 1183 | domain = 0; |
| 1184 | goto do_fault; |
| 1185 | } else if (type == 2 && (desc & (1 << 18))) { |
| 1186 | /* Supersection. */ |
| 1187 | domain = 0; |
| 1188 | } else { |
| 1189 | /* Section or page. */ |
| 1190 | domain = (desc >> 4) & 0x1e; |
| 1191 | } |
| 1192 | domain = (env->cp15.c3 >> domain) & 3; |
| 1193 | if (domain == 0 || domain == 2) { |
| 1194 | if (type == 2) |
| 1195 | code = 9; /* Section domain fault. */ |
| 1196 | else |
| 1197 | code = 11; /* Page domain fault. */ |
| 1198 | goto do_fault; |
| 1199 | } |
| 1200 | if (type == 2) { |
| 1201 | if (desc & (1 << 18)) { |
| 1202 | /* Supersection. */ |
| 1203 | phys_addr = (desc & 0xff000000) | (address & 0x00ffffff); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1204 | *page_size = 0x1000000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1205 | } else { |
| 1206 | /* Section. */ |
| 1207 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1208 | *page_size = 0x100000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1209 | } |
| 1210 | ap = ((desc >> 10) & 3) | ((desc >> 13) & 4); |
| 1211 | xn = desc & (1 << 4); |
| 1212 | code = 13; |
| 1213 | } else { |
| 1214 | /* Lookup l2 entry. */ |
| 1215 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); |
| 1216 | desc = ldl_phys(table); |
| 1217 | ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); |
| 1218 | switch (desc & 3) { |
| 1219 | case 0: /* Page translation fault. */ |
| 1220 | code = 7; |
| 1221 | goto do_fault; |
| 1222 | case 1: /* 64k page. */ |
| 1223 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); |
| 1224 | xn = desc & (1 << 15); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1225 | *page_size = 0x10000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1226 | break; |
| 1227 | case 2: case 3: /* 4k page. */ |
| 1228 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); |
| 1229 | xn = desc & 1; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1230 | *page_size = 0x1000; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1231 | break; |
| 1232 | default: |
| 1233 | /* Never happens, but compiler isn't smart enough to tell. */ |
| 1234 | abort(); |
| 1235 | } |
| 1236 | code = 15; |
| 1237 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1238 | if (domain == 3) { |
| 1239 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 1240 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1241 | if (xn && access_type == 2) |
| 1242 | goto do_fault; |
| 1243 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1244 | /* The simplified model uses AP[0] as an access control bit. */ |
| 1245 | if ((env->cp15.c1_sys & (1 << 29)) && (ap & 1) == 0) { |
| 1246 | /* Access flag fault. */ |
| 1247 | code = (code == 15) ? 6 : 3; |
| 1248 | goto do_fault; |
| 1249 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1250 | *prot = check_ap(env, ap, domain, access_type, is_user); |
| 1251 | if (!*prot) { |
| 1252 | /* Access permission fault. */ |
| 1253 | goto do_fault; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1254 | } |
| 1255 | if (!xn) { |
| 1256 | *prot |= PAGE_EXEC; |
| 1257 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1258 | } |
| 1259 | *phys_ptr = phys_addr; |
| 1260 | return 0; |
| 1261 | do_fault: |
| 1262 | return code | (domain << 4); |
| 1263 | } |
| 1264 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1265 | 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] | 1266 | int is_user, uint32_t *phys_ptr, int *prot) |
| 1267 | { |
| 1268 | int n; |
| 1269 | uint32_t mask; |
| 1270 | uint32_t base; |
| 1271 | |
| 1272 | *phys_ptr = address; |
| 1273 | for (n = 7; n >= 0; n--) { |
| 1274 | base = env->cp15.c6_region[n]; |
| 1275 | if ((base & 1) == 0) |
| 1276 | continue; |
| 1277 | mask = 1 << ((base >> 1) & 0x1f); |
| 1278 | /* Keep this shift separate from the above to avoid an |
| 1279 | (undefined) << 32. */ |
| 1280 | mask = (mask << 1) - 1; |
| 1281 | if (((base ^ address) & ~mask) == 0) |
| 1282 | break; |
| 1283 | } |
| 1284 | if (n < 0) |
| 1285 | return 2; |
| 1286 | |
| 1287 | if (access_type == 2) { |
| 1288 | mask = env->cp15.c5_insn; |
| 1289 | } else { |
| 1290 | mask = env->cp15.c5_data; |
| 1291 | } |
| 1292 | mask = (mask >> (n * 4)) & 0xf; |
| 1293 | switch (mask) { |
| 1294 | case 0: |
| 1295 | return 1; |
| 1296 | case 1: |
| 1297 | if (is_user) |
| 1298 | return 1; |
| 1299 | *prot = PAGE_READ | PAGE_WRITE; |
| 1300 | break; |
| 1301 | case 2: |
| 1302 | *prot = PAGE_READ; |
| 1303 | if (!is_user) |
| 1304 | *prot |= PAGE_WRITE; |
| 1305 | break; |
| 1306 | case 3: |
| 1307 | *prot = PAGE_READ | PAGE_WRITE; |
| 1308 | break; |
| 1309 | case 5: |
| 1310 | if (is_user) |
| 1311 | return 1; |
| 1312 | *prot = PAGE_READ; |
| 1313 | break; |
| 1314 | case 6: |
| 1315 | *prot = PAGE_READ; |
| 1316 | break; |
| 1317 | default: |
| 1318 | /* Bad permission. */ |
| 1319 | return 1; |
| 1320 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1321 | *prot |= PAGE_EXEC; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1322 | return 0; |
| 1323 | } |
| 1324 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1325 | #ifdef CONFIG_GLES2 |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1326 | int get_phys_addr(CPUARMState *env, uint32_t address, |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1327 | int access_type, int is_user, |
| 1328 | uint32_t *phys_ptr, int *prot, |
| 1329 | target_ulong *page_size); |
| 1330 | #else |
| 1331 | static |
| 1332 | #endif |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1333 | int get_phys_addr(CPUARMState *env, uint32_t address, |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 1334 | int access_type, int is_user, |
| 1335 | uint32_t *phys_ptr, int *prot, |
| 1336 | target_ulong *page_size) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1337 | { |
| 1338 | /* Fast Context Switch Extension. */ |
| 1339 | if (address < 0x02000000) |
| 1340 | address += env->cp15.c13_fcse; |
| 1341 | |
| 1342 | if ((env->cp15.c1_sys & 1) == 0) { |
| 1343 | /* MMU/MPU disabled. */ |
| 1344 | *phys_ptr = address; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1345 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 1346 | *page_size = TARGET_PAGE_SIZE; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1347 | return 0; |
| 1348 | } else if (arm_feature(env, ARM_FEATURE_MPU)) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1349 | *page_size = TARGET_PAGE_SIZE; |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 1350 | return get_phys_addr_mpu(env, address, access_type, is_user, phys_ptr, |
| 1351 | prot); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1352 | } else if (env->cp15.c1_sys & (1 << 23)) { |
| 1353 | 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] | 1354 | prot, page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1355 | } else { |
| 1356 | 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] | 1357 | prot, page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1358 | } |
| 1359 | } |
| 1360 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1361 | int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 1362 | int access_type, int mmu_idx) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1363 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1364 | uint32_t phys_addr; |
| 1365 | target_ulong page_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1366 | int prot; |
| 1367 | int ret, is_user; |
| 1368 | |
| 1369 | is_user = mmu_idx == MMU_USER_IDX; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1370 | ret = get_phys_addr(env, address, access_type, is_user, &phys_addr, &prot, |
| 1371 | &page_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1372 | if (ret == 0) { |
| 1373 | /* Map a single [sub]page. */ |
| 1374 | phys_addr &= ~(uint32_t)0x3ff; |
| 1375 | address &= ~(uint32_t)0x3ff; |
David 'Digit' Turner | 0d8b235 | 2014-03-20 17:13:13 +0100 | [diff] [blame] | 1376 | tlb_set_page (env, address, phys_addr, prot | PAGE_EXEC, mmu_idx, |
| 1377 | page_size); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1378 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1379 | } |
| 1380 | |
| 1381 | if (access_type == 2) { |
| 1382 | env->cp15.c5_insn = ret; |
| 1383 | env->cp15.c6_insn = address; |
| 1384 | env->exception_index = EXCP_PREFETCH_ABORT; |
| 1385 | } else { |
| 1386 | env->cp15.c5_data = ret; |
| 1387 | if (access_type == 1 && arm_feature(env, ARM_FEATURE_V6)) |
| 1388 | env->cp15.c5_data |= (1 << 11); |
| 1389 | env->cp15.c6_data = address; |
| 1390 | env->exception_index = EXCP_DATA_ABORT; |
| 1391 | } |
| 1392 | return 1; |
| 1393 | } |
| 1394 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1395 | 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] | 1396 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1397 | uint32_t phys_addr; |
| 1398 | target_ulong page_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1399 | int prot; |
| 1400 | int ret; |
| 1401 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1402 | 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] | 1403 | |
| 1404 | if (ret != 0) |
| 1405 | return -1; |
| 1406 | |
| 1407 | return phys_addr; |
| 1408 | } |
| 1409 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1410 | /* Return basic MPU access permission bits. */ |
| 1411 | static uint32_t simple_mpu_ap_bits(uint32_t val) |
| 1412 | { |
| 1413 | uint32_t ret; |
| 1414 | uint32_t mask; |
| 1415 | int i; |
| 1416 | ret = 0; |
| 1417 | mask = 3; |
| 1418 | for (i = 0; i < 16; i += 2) { |
| 1419 | ret |= (val >> i) & mask; |
| 1420 | mask <<= 2; |
| 1421 | } |
| 1422 | return ret; |
| 1423 | } |
| 1424 | |
| 1425 | /* Pad basic MPU access permission bits to extended format. */ |
| 1426 | static uint32_t extended_mpu_ap_bits(uint32_t val) |
| 1427 | { |
| 1428 | uint32_t ret; |
| 1429 | uint32_t mask; |
| 1430 | int i; |
| 1431 | ret = 0; |
| 1432 | mask = 3; |
| 1433 | for (i = 0; i < 16; i += 2) { |
| 1434 | ret |= (val & mask) << i; |
| 1435 | mask <<= 2; |
| 1436 | } |
| 1437 | return ret; |
| 1438 | } |
| 1439 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1440 | 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] | 1441 | { |
| 1442 | int op1; |
| 1443 | int op2; |
| 1444 | int crm; |
| 1445 | |
| 1446 | op1 = (insn >> 21) & 7; |
| 1447 | op2 = (insn >> 5) & 7; |
| 1448 | crm = insn & 0xf; |
| 1449 | switch ((insn >> 16) & 0xf) { |
| 1450 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1451 | /* ID codes. */ |
| 1452 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1453 | break; |
| 1454 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1455 | break; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1456 | if (arm_feature(env, ARM_FEATURE_V7) |
| 1457 | && op1 == 2 && crm == 0 && op2 == 0) { |
| 1458 | env->cp15.c0_cssel = val & 0xf; |
| 1459 | break; |
| 1460 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1461 | goto bad_reg; |
| 1462 | case 1: /* System configuration. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1463 | switch (crm) { |
| 1464 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1465 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1466 | op2 = 0; |
| 1467 | switch (op2) { |
| 1468 | case 0: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1469 | if (!arm_feature(env, ARM_FEATURE_XSCALE)) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1470 | env->cp15.c1_sys = val; |
| 1471 | /* ??? Lots of these bits are not implemented. */ |
| 1472 | /* This may enable/disable the MMU, so do a TLB flush. */ |
| 1473 | tlb_flush(env, 1); |
| 1474 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1475 | case 1: /* Auxiliary control register. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1476 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1477 | env->cp15.c1_xscaleauxcr = val; |
| 1478 | break; |
| 1479 | } |
| 1480 | /* Not implemented. */ |
| 1481 | break; |
| 1482 | case 2: |
| 1483 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1484 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1485 | if (env->cp15.c1_coproc != val) { |
| 1486 | env->cp15.c1_coproc = val; |
| 1487 | /* ??? Is this safe when called from within a TB? */ |
| 1488 | tb_flush(env); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1489 | } |
| 1490 | break; |
| 1491 | default: |
| 1492 | goto bad_reg; |
| 1493 | } |
| 1494 | break; |
| 1495 | case 1: |
| 1496 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE) |
| 1497 | || (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) |
| 1498 | goto bad_reg; |
| 1499 | switch (op2) { |
| 1500 | case 0: /* Secure configuration register. */ |
| 1501 | if (env->cp15.c1_secfg & 1) |
| 1502 | goto bad_reg; |
| 1503 | env->cp15.c1_secfg = val; |
| 1504 | break; |
| 1505 | case 1: /* Secure debug enable register. */ |
| 1506 | if (env->cp15.c1_secfg & 1) |
| 1507 | goto bad_reg; |
| 1508 | env->cp15.c1_sedbg = val; |
| 1509 | break; |
| 1510 | case 2: /* Nonsecure access control register. */ |
| 1511 | if (env->cp15.c1_secfg & 1) |
| 1512 | goto bad_reg; |
| 1513 | env->cp15.c1_nseac = val; |
| 1514 | break; |
| 1515 | default: |
| 1516 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1517 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1518 | break; |
| 1519 | default: |
| 1520 | goto bad_reg; |
| 1521 | } |
| 1522 | break; |
| 1523 | case 2: /* MMU Page table control / MPU cache control. */ |
| 1524 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 1525 | switch (op2) { |
| 1526 | case 0: |
| 1527 | env->cp15.c2_data = val; |
| 1528 | break; |
| 1529 | case 1: |
| 1530 | env->cp15.c2_insn = val; |
| 1531 | break; |
| 1532 | default: |
| 1533 | goto bad_reg; |
| 1534 | } |
| 1535 | } else { |
| 1536 | switch (op2) { |
| 1537 | case 0: |
| 1538 | env->cp15.c2_base0 = val; |
| 1539 | break; |
| 1540 | case 1: |
| 1541 | env->cp15.c2_base1 = val; |
| 1542 | break; |
| 1543 | case 2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1544 | val &= 7; |
| 1545 | env->cp15.c2_control = val; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1546 | env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> val); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1547 | env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1548 | break; |
| 1549 | default: |
| 1550 | goto bad_reg; |
| 1551 | } |
| 1552 | } |
| 1553 | break; |
| 1554 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
| 1555 | env->cp15.c3 = val; |
| 1556 | tlb_flush(env, 1); /* Flush TLB as domain not tracked in TLB */ |
| 1557 | break; |
| 1558 | case 4: /* Reserved. */ |
| 1559 | goto bad_reg; |
| 1560 | case 5: /* MMU Fault status / MPU access permission. */ |
| 1561 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1562 | op2 = 0; |
| 1563 | switch (op2) { |
| 1564 | case 0: |
| 1565 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 1566 | val = extended_mpu_ap_bits(val); |
| 1567 | env->cp15.c5_data = val; |
| 1568 | break; |
| 1569 | case 1: |
| 1570 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 1571 | val = extended_mpu_ap_bits(val); |
| 1572 | env->cp15.c5_insn = val; |
| 1573 | break; |
| 1574 | case 2: |
| 1575 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 1576 | goto bad_reg; |
| 1577 | env->cp15.c5_data = val; |
| 1578 | break; |
| 1579 | case 3: |
| 1580 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 1581 | goto bad_reg; |
| 1582 | env->cp15.c5_insn = val; |
| 1583 | break; |
| 1584 | default: |
| 1585 | goto bad_reg; |
| 1586 | } |
| 1587 | break; |
| 1588 | case 6: /* MMU Fault address / MPU base/size. */ |
| 1589 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 1590 | if (crm >= 8) |
| 1591 | goto bad_reg; |
| 1592 | env->cp15.c6_region[crm] = val; |
| 1593 | } else { |
| 1594 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1595 | op2 = 0; |
| 1596 | switch (op2) { |
| 1597 | case 0: |
| 1598 | env->cp15.c6_data = val; |
| 1599 | break; |
| 1600 | case 1: /* ??? This is WFAR on armv6 */ |
| 1601 | case 2: |
| 1602 | env->cp15.c6_insn = val; |
| 1603 | break; |
| 1604 | default: |
| 1605 | goto bad_reg; |
| 1606 | } |
| 1607 | } |
| 1608 | break; |
| 1609 | case 7: /* Cache control. */ |
| 1610 | env->cp15.c15_i_max = 0x000; |
| 1611 | env->cp15.c15_i_min = 0xff0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1612 | if (op1 != 0) { |
| 1613 | goto bad_reg; |
| 1614 | } |
| 1615 | /* No cache, so nothing to do except VA->PA translations. */ |
David 'Digit' Turner | 1811e78 | 2014-03-19 11:38:51 +0100 | [diff] [blame] | 1616 | if (arm_feature(env, ARM_FEATURE_VAPA)) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1617 | switch (crm) { |
| 1618 | case 4: |
| 1619 | if (arm_feature(env, ARM_FEATURE_V7)) { |
| 1620 | env->cp15.c7_par = val & 0xfffff6ff; |
| 1621 | } else { |
| 1622 | env->cp15.c7_par = val & 0xfffff1ff; |
| 1623 | } |
| 1624 | break; |
| 1625 | case 8: { |
| 1626 | uint32_t phys_addr; |
| 1627 | target_ulong page_size; |
| 1628 | int prot; |
| 1629 | int ret, is_user = op2 & 2; |
| 1630 | int access_type = op2 & 1; |
| 1631 | |
| 1632 | if (op2 & 4) { |
| 1633 | /* Other states are only available with TrustZone */ |
| 1634 | goto bad_reg; |
| 1635 | } |
| 1636 | ret = get_phys_addr(env, val, access_type, is_user, |
| 1637 | &phys_addr, &prot, &page_size); |
| 1638 | if (ret == 0) { |
| 1639 | /* We do not set any attribute bits in the PAR */ |
| 1640 | if (page_size == (1 << 24) |
| 1641 | && arm_feature(env, ARM_FEATURE_V7)) { |
| 1642 | env->cp15.c7_par = (phys_addr & 0xff000000) | 1 << 1; |
| 1643 | } else { |
| 1644 | env->cp15.c7_par = phys_addr & 0xfffff000; |
| 1645 | } |
| 1646 | } else { |
| 1647 | env->cp15.c7_par = ((ret & (10 << 1)) >> 5) | |
| 1648 | ((ret & (12 << 1)) >> 6) | |
| 1649 | ((ret & 0xf) << 1) | 1; |
| 1650 | } |
| 1651 | break; |
| 1652 | } |
| 1653 | } |
| 1654 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1655 | break; |
| 1656 | case 8: /* MMU TLB control. */ |
| 1657 | switch (op2) { |
| 1658 | case 0: /* Invalidate all. */ |
| 1659 | tlb_flush(env, 0); |
| 1660 | break; |
| 1661 | case 1: /* Invalidate single TLB entry. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1662 | tlb_flush_page(env, val & TARGET_PAGE_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1663 | break; |
| 1664 | case 2: /* Invalidate on ASID. */ |
| 1665 | tlb_flush(env, val == 0); |
| 1666 | break; |
| 1667 | case 3: /* Invalidate single entry on MVA. */ |
| 1668 | /* ??? This is like case 1, but ignores ASID. */ |
| 1669 | tlb_flush(env, 1); |
| 1670 | break; |
| 1671 | default: |
| 1672 | goto bad_reg; |
| 1673 | } |
| 1674 | break; |
| 1675 | case 9: |
| 1676 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1677 | break; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1678 | if (arm_feature(env, ARM_FEATURE_STRONGARM)) |
| 1679 | break; /* Ignore ReadBuffer access */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1680 | switch (crm) { |
| 1681 | case 0: /* Cache lockdown. */ |
| 1682 | switch (op1) { |
| 1683 | case 0: /* L1 cache. */ |
| 1684 | switch (op2) { |
| 1685 | case 0: |
| 1686 | env->cp15.c9_data = val; |
| 1687 | break; |
| 1688 | case 1: |
| 1689 | env->cp15.c9_insn = val; |
| 1690 | break; |
| 1691 | default: |
| 1692 | goto bad_reg; |
| 1693 | } |
| 1694 | break; |
| 1695 | case 1: /* L2 cache. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1696 | switch (op2) { |
| 1697 | case 0: /* L2 cache lockdown */ |
| 1698 | case 2: /* L2 cache auxiliary control */ |
| 1699 | /* ignore */ |
| 1700 | break; |
| 1701 | default: |
| 1702 | goto bad_reg; |
| 1703 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1704 | break; |
| 1705 | default: |
| 1706 | goto bad_reg; |
| 1707 | } |
| 1708 | break; |
| 1709 | case 1: /* TCM memory region registers. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1710 | case 2: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1711 | /* Not implemented. */ |
| 1712 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1713 | case 12: /* Performance monitor control */ |
| 1714 | /* Performance monitors are implementation defined in v7, |
| 1715 | * but with an ARM recommended set of registers, which we |
| 1716 | * follow (although we don't actually implement any counters) |
| 1717 | */ |
| 1718 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 1719 | goto bad_reg; |
| 1720 | } |
| 1721 | switch (op2) { |
| 1722 | case 0: /* performance monitor control register */ |
| 1723 | /* only the DP, X, D and E bits are writable */ |
| 1724 | env->cp15.c9_pmcr &= ~0x39; |
| 1725 | env->cp15.c9_pmcr |= (val & 0x39); |
| 1726 | break; |
| 1727 | case 1: /* Count enable set register */ |
| 1728 | val &= (1 << 31); |
| 1729 | env->cp15.c9_pmcnten |= val; |
| 1730 | break; |
| 1731 | case 2: /* Count enable clear */ |
| 1732 | val &= (1 << 31); |
| 1733 | env->cp15.c9_pmcnten &= ~val; |
| 1734 | break; |
| 1735 | case 3: /* Overflow flag status */ |
| 1736 | env->cp15.c9_pmovsr &= ~val; |
| 1737 | break; |
| 1738 | case 4: /* Software increment */ |
| 1739 | /* RAZ/WI since we don't implement the software-count event */ |
| 1740 | break; |
| 1741 | case 5: /* Event counter selection register */ |
| 1742 | /* Since we don't implement any events, writing to this register |
| 1743 | * is actually UNPREDICTABLE. So we choose to RAZ/WI. |
| 1744 | */ |
| 1745 | break; |
| 1746 | default: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1747 | goto bad_reg; |
| 1748 | } |
| 1749 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1750 | case 13: /* Performance counters */ |
| 1751 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 1752 | goto bad_reg; |
| 1753 | } |
| 1754 | switch (op2) { |
| 1755 | case 0: /* Cycle count register: not implemented, so RAZ/WI */ |
| 1756 | break; |
| 1757 | case 1: /* Event type select */ |
| 1758 | env->cp15.c9_pmxevtyper = val & 0xff; |
| 1759 | break; |
| 1760 | case 2: /* Event count register */ |
| 1761 | /* Unimplemented (we have no events), RAZ/WI */ |
| 1762 | break; |
| 1763 | default: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1764 | goto bad_reg; |
| 1765 | } |
| 1766 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1767 | case 14: /* Performance monitor control */ |
| 1768 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1769 | goto bad_reg; |
| 1770 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 1771 | switch (op2) { |
| 1772 | case 0: /* user enable */ |
| 1773 | env->cp15.c9_pmuserenr = val & 1; |
| 1774 | /* changes access rights for cp registers, so flush tbs */ |
| 1775 | tb_flush(env); |
| 1776 | break; |
| 1777 | case 1: /* interrupt enable set */ |
| 1778 | /* We have no event counters so only the C bit can be changed */ |
| 1779 | val &= (1 << 31); |
| 1780 | env->cp15.c9_pminten |= val; |
| 1781 | break; |
| 1782 | case 2: /* interrupt enable clear */ |
| 1783 | val &= (1 << 31); |
| 1784 | env->cp15.c9_pminten &= ~val; |
| 1785 | break; |
| 1786 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1787 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1788 | default: |
| 1789 | goto bad_reg; |
| 1790 | } |
| 1791 | break; |
| 1792 | case 10: /* MMU TLB lockdown. */ |
| 1793 | /* ??? TLB lockdown not implemented. */ |
| 1794 | break; |
| 1795 | case 12: /* Reserved. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1796 | if (!op1 && !crm) { |
| 1797 | switch (op2) { |
| 1798 | case 0: |
| 1799 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 1800 | goto bad_reg; |
| 1801 | } |
| 1802 | env->cp15.c12_vbar = val & ~0x1f; |
| 1803 | break; |
| 1804 | case 1: |
| 1805 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 1806 | goto bad_reg; |
| 1807 | } |
| 1808 | if (!(env->cp15.c1_secfg & 1)) { |
| 1809 | env->cp15.c12_mvbar = val & ~0x1f; |
| 1810 | } |
| 1811 | break; |
| 1812 | default: |
| 1813 | goto bad_reg; |
| 1814 | } |
| 1815 | break; |
| 1816 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1817 | goto bad_reg; |
| 1818 | case 13: /* Process ID. */ |
| 1819 | switch (op2) { |
| 1820 | case 0: |
| 1821 | /* Unlike real hardware the qemu TLB uses virtual addresses, |
| 1822 | not modified virtual addresses, so this causes a TLB flush. |
| 1823 | */ |
| 1824 | if (env->cp15.c13_fcse != val) |
| 1825 | tlb_flush(env, 1); |
| 1826 | env->cp15.c13_fcse = val; |
| 1827 | break; |
| 1828 | case 1: |
| 1829 | /* This changes the ASID, so do a TLB flush. */ |
| 1830 | if (env->cp15.c13_context != val |
| 1831 | && !arm_feature(env, ARM_FEATURE_MPU)) |
| 1832 | tlb_flush(env, 0); |
| 1833 | env->cp15.c13_context = val; |
| 1834 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1835 | default: |
| 1836 | goto bad_reg; |
| 1837 | } |
| 1838 | break; |
| 1839 | case 14: /* Reserved. */ |
| 1840 | goto bad_reg; |
| 1841 | case 15: /* Implementation specific. */ |
| 1842 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 1843 | if (op2 == 0 && crm == 1) { |
| 1844 | if (env->cp15.c15_cpar != (val & 0x3fff)) { |
| 1845 | /* Changes cp0 to cp13 behavior, so needs a TB flush. */ |
| 1846 | tb_flush(env); |
| 1847 | env->cp15.c15_cpar = val & 0x3fff; |
| 1848 | } |
| 1849 | break; |
| 1850 | } |
| 1851 | goto bad_reg; |
| 1852 | } |
| 1853 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 1854 | switch (crm) { |
| 1855 | case 0: |
| 1856 | break; |
| 1857 | case 1: /* Set TI925T configuration. */ |
| 1858 | env->cp15.c15_ticonfig = val & 0xe7; |
| 1859 | env->cp15.c0_cpuid = (val & (1 << 5)) ? /* OS_TYPE bit */ |
| 1860 | ARM_CPUID_TI915T : ARM_CPUID_TI925T; |
| 1861 | break; |
| 1862 | case 2: /* Set I_max. */ |
| 1863 | env->cp15.c15_i_max = val; |
| 1864 | break; |
| 1865 | case 3: /* Set I_min. */ |
| 1866 | env->cp15.c15_i_min = val; |
| 1867 | break; |
| 1868 | case 4: /* Set thread-ID. */ |
| 1869 | env->cp15.c15_threadid = val & 0xffff; |
| 1870 | break; |
| 1871 | case 8: /* Wait-for-interrupt (deprecated). */ |
David 'Digit' Turner | bf7a22f | 2014-03-25 16:36:03 +0100 | [diff] [blame] | 1872 | cpu_interrupt(ENV_GET_CPU(env), CPU_INTERRUPT_HALT); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1873 | break; |
| 1874 | default: |
| 1875 | goto bad_reg; |
| 1876 | } |
| 1877 | } |
| 1878 | break; |
| 1879 | } |
| 1880 | return; |
| 1881 | bad_reg: |
| 1882 | /* ??? For debugging only. Should raise illegal instruction exception. */ |
| 1883 | cpu_abort(env, "Unimplemented cp15 register write (c%d, c%d, {%d, %d})\n", |
| 1884 | (insn >> 16) & 0xf, crm, op1, op2); |
| 1885 | } |
| 1886 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 1887 | 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] | 1888 | { |
| 1889 | int op1; |
| 1890 | int op2; |
| 1891 | int crm; |
| 1892 | |
| 1893 | op1 = (insn >> 21) & 7; |
| 1894 | op2 = (insn >> 5) & 7; |
| 1895 | crm = insn & 0xf; |
| 1896 | switch ((insn >> 16) & 0xf) { |
| 1897 | case 0: /* ID codes. */ |
| 1898 | switch (op1) { |
| 1899 | case 0: |
| 1900 | switch (crm) { |
| 1901 | case 0: |
| 1902 | switch (op2) { |
| 1903 | case 0: /* Device ID. */ |
| 1904 | return env->cp15.c0_cpuid; |
| 1905 | case 1: /* Cache Type. */ |
| 1906 | return env->cp15.c0_cachetype; |
| 1907 | case 2: /* TCM status. */ |
| 1908 | return 0; |
| 1909 | case 3: /* TLB type register. */ |
| 1910 | return 0; /* No lockable TLB entries. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1911 | case 5: /* MPIDR */ |
| 1912 | /* The MPIDR was standardised in v7; prior to |
| 1913 | * this it was implemented only in the 11MPCore. |
| 1914 | * For all other pre-v7 cores it does not exist. |
| 1915 | */ |
| 1916 | if (arm_feature(env, ARM_FEATURE_V7) || |
| 1917 | ARM_CPUID(env) == ARM_CPUID_ARM11MPCORE) { |
David 'Digit' Turner | 6657678 | 2014-03-24 16:57:57 +0100 | [diff] [blame] | 1918 | int mpidr = ENV_GET_CPU(env)->cpu_index; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1919 | /* We don't support setting cluster ID ([8..11]) |
| 1920 | * so these bits always RAZ. |
| 1921 | */ |
| 1922 | if (arm_feature(env, ARM_FEATURE_V7MP)) { |
| 1923 | mpidr |= (1 << 31); |
| 1924 | /* Cores which are uniprocessor (non-coherent) |
| 1925 | * but still implement the MP extensions set |
| 1926 | * bit 30. (For instance, A9UP.) However we do |
| 1927 | * not currently model any of those cores. |
| 1928 | */ |
| 1929 | } |
| 1930 | return mpidr; |
| 1931 | } |
| 1932 | /* otherwise fall through to the unimplemented-reg case */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1933 | default: |
| 1934 | goto bad_reg; |
| 1935 | } |
| 1936 | case 1: |
| 1937 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1938 | goto bad_reg; |
| 1939 | return env->cp15.c0_c1[op2]; |
| 1940 | case 2: |
| 1941 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1942 | goto bad_reg; |
| 1943 | return env->cp15.c0_c2[op2]; |
| 1944 | case 3: case 4: case 5: case 6: case 7: |
| 1945 | return 0; |
| 1946 | default: |
| 1947 | goto bad_reg; |
| 1948 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1949 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1950 | case 1: |
| 1951 | /* These registers aren't documented on arm11 cores. However |
| 1952 | Linux looks at them anyway. */ |
| 1953 | if (!arm_feature(env, ARM_FEATURE_V6)) |
| 1954 | goto bad_reg; |
| 1955 | if (crm != 0) |
| 1956 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1957 | if (!arm_feature(env, ARM_FEATURE_V7)) |
| 1958 | return 0; |
| 1959 | |
| 1960 | switch (op2) { |
| 1961 | case 0: |
| 1962 | return env->cp15.c0_ccsid[env->cp15.c0_cssel]; |
| 1963 | case 1: |
| 1964 | return env->cp15.c0_clid; |
| 1965 | case 7: |
| 1966 | return 0; |
| 1967 | } |
| 1968 | goto bad_reg; |
| 1969 | case 2: |
| 1970 | if (op2 != 0 || crm != 0) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1971 | goto bad_reg; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1972 | return env->cp15.c0_cssel; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1973 | default: |
| 1974 | goto bad_reg; |
| 1975 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1976 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1977 | case 1: /* System configuration. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1978 | switch (crm) { |
| 1979 | case 0: |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1980 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 1981 | op2 = 0; |
| 1982 | switch (op2) { |
| 1983 | case 0: /* Control register. */ |
| 1984 | return env->cp15.c1_sys; |
| 1985 | case 1: /* Auxiliary control register. */ |
| 1986 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 1987 | return env->cp15.c1_xscaleauxcr; |
| 1988 | if (!arm_feature(env, ARM_FEATURE_AUXCR)) |
| 1989 | goto bad_reg; |
| 1990 | switch (ARM_CPUID(env)) { |
| 1991 | case ARM_CPUID_ARM1026: |
| 1992 | return 1; |
| 1993 | case ARM_CPUID_ARM1136: |
| 1994 | case ARM_CPUID_ARM1136_R2: |
| 1995 | return 7; |
| 1996 | case ARM_CPUID_ARM11MPCORE: |
| 1997 | return 1; |
| 1998 | case ARM_CPUID_CORTEXA8: |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 1999 | case ARM_CPUID_CORTEXA8_R2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2000 | return 2; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2001 | case ARM_CPUID_CORTEXA9: |
| 2002 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2003 | default: |
| 2004 | goto bad_reg; |
| 2005 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2006 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2007 | case 2: /* Coprocessor access register. */ |
| 2008 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
| 2009 | goto bad_reg; |
| 2010 | return env->cp15.c1_coproc; |
| 2011 | default: |
| 2012 | goto bad_reg; |
| 2013 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2014 | break; |
| 2015 | case 1: |
| 2016 | if (!arm_feature(env, ARM_FEATURE_TRUSTZONE) |
| 2017 | || (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) |
| 2018 | goto bad_reg; |
| 2019 | switch (op2) { |
| 2020 | case 0: /* Secure configuration register. */ |
| 2021 | if (env->cp15.c1_secfg & 1) |
| 2022 | goto bad_reg; |
| 2023 | return env->cp15.c1_secfg; |
| 2024 | case 1: /* Secure debug enable register. */ |
| 2025 | if (env->cp15.c1_secfg & 1) |
| 2026 | goto bad_reg; |
| 2027 | return env->cp15.c1_sedbg; |
| 2028 | case 2: /* Nonsecure access control register. */ |
| 2029 | return env->cp15.c1_nseac; |
| 2030 | default: |
| 2031 | goto bad_reg; |
| 2032 | } |
| 2033 | break; |
| 2034 | default: |
| 2035 | goto bad_reg; |
| 2036 | } |
| 2037 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2038 | case 2: /* MMU Page table control / MPU cache control. */ |
| 2039 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 2040 | switch (op2) { |
| 2041 | case 0: |
| 2042 | return env->cp15.c2_data; |
| 2043 | break; |
| 2044 | case 1: |
| 2045 | return env->cp15.c2_insn; |
| 2046 | break; |
| 2047 | default: |
| 2048 | goto bad_reg; |
| 2049 | } |
| 2050 | } else { |
| 2051 | switch (op2) { |
| 2052 | case 0: |
| 2053 | return env->cp15.c2_base0; |
| 2054 | case 1: |
| 2055 | return env->cp15.c2_base1; |
| 2056 | case 2: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2057 | return env->cp15.c2_control; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2058 | default: |
| 2059 | goto bad_reg; |
| 2060 | } |
| 2061 | } |
| 2062 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
| 2063 | return env->cp15.c3; |
| 2064 | case 4: /* Reserved. */ |
| 2065 | goto bad_reg; |
| 2066 | case 5: /* MMU Fault status / MPU access permission. */ |
| 2067 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 2068 | op2 = 0; |
| 2069 | switch (op2) { |
| 2070 | case 0: |
| 2071 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 2072 | return simple_mpu_ap_bits(env->cp15.c5_data); |
| 2073 | return env->cp15.c5_data; |
| 2074 | case 1: |
| 2075 | if (arm_feature(env, ARM_FEATURE_MPU)) |
| 2076 | return simple_mpu_ap_bits(env->cp15.c5_data); |
| 2077 | return env->cp15.c5_insn; |
| 2078 | case 2: |
| 2079 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 2080 | goto bad_reg; |
| 2081 | return env->cp15.c5_data; |
| 2082 | case 3: |
| 2083 | if (!arm_feature(env, ARM_FEATURE_MPU)) |
| 2084 | goto bad_reg; |
| 2085 | return env->cp15.c5_insn; |
| 2086 | default: |
| 2087 | goto bad_reg; |
| 2088 | } |
| 2089 | case 6: /* MMU Fault address. */ |
| 2090 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
| 2091 | if (crm >= 8) |
| 2092 | goto bad_reg; |
| 2093 | return env->cp15.c6_region[crm]; |
| 2094 | } else { |
| 2095 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
| 2096 | op2 = 0; |
| 2097 | switch (op2) { |
| 2098 | case 0: |
| 2099 | return env->cp15.c6_data; |
| 2100 | case 1: |
| 2101 | if (arm_feature(env, ARM_FEATURE_V6)) { |
| 2102 | /* Watchpoint Fault Adrress. */ |
| 2103 | return 0; /* Not implemented. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2104 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2105 | /* Instruction Fault Adrress. */ |
| 2106 | /* Arm9 doesn't have an IFAR, but implementing it anyway |
| 2107 | shouldn't do any harm. */ |
| 2108 | return env->cp15.c6_insn; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2109 | case 2: |
| 2110 | if (arm_feature(env, ARM_FEATURE_V6)) { |
| 2111 | /* Instruction Fault Adrress. */ |
| 2112 | return env->cp15.c6_insn; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2113 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2114 | goto bad_reg; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2115 | default: |
| 2116 | goto bad_reg; |
| 2117 | } |
| 2118 | } |
| 2119 | case 7: /* Cache control. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2120 | if (crm == 4 && op1 == 0 && op2 == 0) { |
| 2121 | return env->cp15.c7_par; |
| 2122 | } |
| 2123 | 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] | 2124 | env->ZF = 0; |
| 2125 | return 0; |
| 2126 | case 8: /* MMU TLB control. */ |
| 2127 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2128 | case 9: |
| 2129 | switch (crm) { |
| 2130 | case 0: /* Cache lockdown */ |
| 2131 | switch (op1) { |
| 2132 | case 0: /* L1 cache. */ |
| 2133 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 2134 | return 0; |
| 2135 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2136 | switch (op2) { |
| 2137 | case 0: |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2138 | return env->cp15.c9_data; |
| 2139 | case 1: |
| 2140 | return env->cp15.c9_insn; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2141 | default: |
| 2142 | goto bad_reg; |
| 2143 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2144 | case 1: /* L2 cache */ |
| 2145 | if (crm != 0) { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2146 | goto bad_reg; |
| 2147 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2148 | /* L2 Lockdown and Auxiliary control. */ |
| 2149 | return 0; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2150 | default: |
| 2151 | goto bad_reg; |
| 2152 | } |
| 2153 | break; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2154 | case 12: /* Performance monitor control */ |
| 2155 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2156 | goto bad_reg; |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2157 | } |
| 2158 | switch (op2) { |
| 2159 | case 0: /* performance monitor control register */ |
| 2160 | return env->cp15.c9_pmcr; |
| 2161 | case 1: /* count enable set */ |
| 2162 | case 2: /* count enable clear */ |
| 2163 | return env->cp15.c9_pmcnten; |
| 2164 | case 3: /* overflow flag status */ |
| 2165 | return env->cp15.c9_pmovsr; |
| 2166 | case 4: /* software increment */ |
| 2167 | case 5: /* event counter selection register */ |
| 2168 | return 0; /* Unimplemented, RAZ/WI */ |
| 2169 | default: |
| 2170 | goto bad_reg; |
| 2171 | } |
| 2172 | case 13: /* Performance counters */ |
| 2173 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 2174 | goto bad_reg; |
| 2175 | } |
| 2176 | switch (op2) { |
| 2177 | case 1: /* Event type select */ |
| 2178 | return env->cp15.c9_pmxevtyper; |
| 2179 | case 0: /* Cycle count register */ |
| 2180 | case 2: /* Event count register */ |
| 2181 | /* Unimplemented, so RAZ/WI */ |
| 2182 | return 0; |
| 2183 | default: |
| 2184 | goto bad_reg; |
| 2185 | } |
| 2186 | case 14: /* Performance monitor control */ |
| 2187 | if (!arm_feature(env, ARM_FEATURE_V7)) { |
| 2188 | goto bad_reg; |
| 2189 | } |
| 2190 | switch (op2) { |
| 2191 | case 0: /* user enable */ |
| 2192 | return env->cp15.c9_pmuserenr; |
| 2193 | case 1: /* interrupt enable set */ |
| 2194 | case 2: /* interrupt enable clear */ |
| 2195 | return env->cp15.c9_pminten; |
| 2196 | default: |
| 2197 | goto bad_reg; |
| 2198 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2199 | default: |
| 2200 | goto bad_reg; |
| 2201 | } |
David 'Digit' Turner | d9ac10a | 2014-03-19 11:01:43 +0100 | [diff] [blame] | 2202 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2203 | case 10: /* MMU TLB lockdown. */ |
| 2204 | /* ??? TLB lockdown not implemented. */ |
| 2205 | return 0; |
| 2206 | case 11: /* TCM DMA control. */ |
| 2207 | case 12: /* Reserved. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2208 | if (!op1 && !crm) { |
| 2209 | switch (op2) { |
| 2210 | case 0: /* secure or nonsecure vector base address */ |
| 2211 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 2212 | return env->cp15.c12_vbar; |
| 2213 | } |
| 2214 | break; |
| 2215 | case 1: /* monitor vector base address */ |
| 2216 | if (arm_feature(env, ARM_FEATURE_TRUSTZONE)) { |
| 2217 | return env->cp15.c12_mvbar; |
| 2218 | } |
| 2219 | break; |
| 2220 | default: |
| 2221 | break; |
| 2222 | } |
| 2223 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2224 | goto bad_reg; |
| 2225 | case 13: /* Process ID. */ |
| 2226 | switch (op2) { |
| 2227 | case 0: |
| 2228 | return env->cp15.c13_fcse; |
| 2229 | case 1: |
| 2230 | return env->cp15.c13_context; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2231 | default: |
| 2232 | goto bad_reg; |
| 2233 | } |
| 2234 | case 14: /* Reserved. */ |
| 2235 | goto bad_reg; |
| 2236 | case 15: /* Implementation specific. */ |
| 2237 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
| 2238 | if (op2 == 0 && crm == 1) |
| 2239 | return env->cp15.c15_cpar; |
| 2240 | |
| 2241 | goto bad_reg; |
| 2242 | } |
| 2243 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
| 2244 | switch (crm) { |
| 2245 | case 0: |
| 2246 | return 0; |
| 2247 | case 1: /* Read TI925T configuration. */ |
| 2248 | return env->cp15.c15_ticonfig; |
| 2249 | case 2: /* Read I_max. */ |
| 2250 | return env->cp15.c15_i_max; |
| 2251 | case 3: /* Read I_min. */ |
| 2252 | return env->cp15.c15_i_min; |
| 2253 | case 4: /* Read thread-ID. */ |
| 2254 | return env->cp15.c15_threadid; |
| 2255 | case 8: /* TI925T_status */ |
| 2256 | return 0; |
| 2257 | } |
| 2258 | /* TODO: Peripheral port remap register: |
| 2259 | * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt |
| 2260 | * controller base address at $rn & ~0xfff and map size of |
| 2261 | * 0x200 << ($rn & 0xfff), when MMU is off. */ |
| 2262 | goto bad_reg; |
| 2263 | } |
| 2264 | return 0; |
| 2265 | } |
| 2266 | bad_reg: |
| 2267 | /* ??? For debugging only. Should raise illegal instruction exception. */ |
| 2268 | cpu_abort(env, "Unimplemented cp15 register read (c%d, c%d, {%d, %d})\n", |
| 2269 | (insn >> 16) & 0xf, crm, op1, op2); |
| 2270 | return 0; |
| 2271 | } |
| 2272 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2273 | 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] | 2274 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2275 | if ((env->uncached_cpsr & CPSR_M) == mode) { |
| 2276 | env->regs[13] = val; |
| 2277 | } else { |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 2278 | env->banked_r13[bank_number(env, mode)] = val; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2279 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2280 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2281 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2282 | 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] | 2283 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2284 | if ((env->uncached_cpsr & CPSR_M) == mode) { |
| 2285 | return env->regs[13]; |
| 2286 | } else { |
David 'Digit' Turner | 5c95548 | 2014-03-17 11:54:56 +0100 | [diff] [blame] | 2287 | return env->banked_r13[bank_number(env, mode)]; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2288 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2289 | } |
| 2290 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2291 | 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] | 2292 | { |
| 2293 | switch (reg) { |
| 2294 | case 0: /* APSR */ |
| 2295 | return xpsr_read(env) & 0xf8000000; |
| 2296 | case 1: /* IAPSR */ |
| 2297 | return xpsr_read(env) & 0xf80001ff; |
| 2298 | case 2: /* EAPSR */ |
| 2299 | return xpsr_read(env) & 0xff00fc00; |
| 2300 | case 3: /* xPSR */ |
| 2301 | return xpsr_read(env) & 0xff00fdff; |
| 2302 | case 5: /* IPSR */ |
| 2303 | return xpsr_read(env) & 0x000001ff; |
| 2304 | case 6: /* EPSR */ |
| 2305 | return xpsr_read(env) & 0x0700fc00; |
| 2306 | case 7: /* IEPSR */ |
| 2307 | return xpsr_read(env) & 0x0700edff; |
| 2308 | case 8: /* MSP */ |
| 2309 | return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13]; |
| 2310 | case 9: /* PSP */ |
| 2311 | return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp; |
| 2312 | case 16: /* PRIMASK */ |
| 2313 | return (env->uncached_cpsr & CPSR_I) != 0; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame] | 2314 | case 17: /* BASEPRI */ |
| 2315 | case 18: /* BASEPRI_MAX */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2316 | return env->v7m.basepri; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame] | 2317 | case 19: /* FAULTMASK */ |
| 2318 | return (env->uncached_cpsr & CPSR_F) != 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2319 | case 20: /* CONTROL */ |
| 2320 | return env->v7m.control; |
| 2321 | default: |
| 2322 | /* ??? For debugging only. */ |
| 2323 | cpu_abort(env, "Unimplemented system register read (%d)\n", reg); |
| 2324 | return 0; |
| 2325 | } |
| 2326 | } |
| 2327 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2328 | 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] | 2329 | { |
| 2330 | switch (reg) { |
| 2331 | case 0: /* APSR */ |
| 2332 | xpsr_write(env, val, 0xf8000000); |
| 2333 | break; |
| 2334 | case 1: /* IAPSR */ |
| 2335 | xpsr_write(env, val, 0xf8000000); |
| 2336 | break; |
| 2337 | case 2: /* EAPSR */ |
| 2338 | xpsr_write(env, val, 0xfe00fc00); |
| 2339 | break; |
| 2340 | case 3: /* xPSR */ |
| 2341 | xpsr_write(env, val, 0xfe00fc00); |
| 2342 | break; |
| 2343 | case 5: /* IPSR */ |
| 2344 | /* IPSR bits are readonly. */ |
| 2345 | break; |
| 2346 | case 6: /* EPSR */ |
| 2347 | xpsr_write(env, val, 0x0600fc00); |
| 2348 | break; |
| 2349 | case 7: /* IEPSR */ |
| 2350 | xpsr_write(env, val, 0x0600fc00); |
| 2351 | break; |
| 2352 | case 8: /* MSP */ |
| 2353 | if (env->v7m.current_sp) |
| 2354 | env->v7m.other_sp = val; |
| 2355 | else |
| 2356 | env->regs[13] = val; |
| 2357 | break; |
| 2358 | case 9: /* PSP */ |
| 2359 | if (env->v7m.current_sp) |
| 2360 | env->regs[13] = val; |
| 2361 | else |
| 2362 | env->v7m.other_sp = val; |
| 2363 | break; |
| 2364 | case 16: /* PRIMASK */ |
| 2365 | if (val & 1) |
| 2366 | env->uncached_cpsr |= CPSR_I; |
| 2367 | else |
| 2368 | env->uncached_cpsr &= ~CPSR_I; |
| 2369 | break; |
David 'Digit' Turner | d440a7e | 2014-03-19 11:05:08 +0100 | [diff] [blame] | 2370 | case 17: /* BASEPRI */ |
| 2371 | env->v7m.basepri = val & 0xff; |
| 2372 | break; |
| 2373 | case 18: /* BASEPRI_MAX */ |
| 2374 | val &= 0xff; |
| 2375 | if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0)) |
| 2376 | env->v7m.basepri = val; |
| 2377 | break; |
| 2378 | case 19: /* FAULTMASK */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2379 | if (val & 1) |
| 2380 | env->uncached_cpsr |= CPSR_F; |
| 2381 | else |
| 2382 | env->uncached_cpsr &= ~CPSR_F; |
| 2383 | break; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2384 | case 20: /* CONTROL */ |
| 2385 | env->v7m.control = val & 3; |
| 2386 | switch_v7m_sp(env, (val & 2) != 0); |
| 2387 | break; |
| 2388 | default: |
| 2389 | /* ??? For debugging only. */ |
| 2390 | cpu_abort(env, "Unimplemented system register write (%d)\n", reg); |
| 2391 | return; |
| 2392 | } |
| 2393 | } |
| 2394 | |
| 2395 | void cpu_arm_set_cp_io(CPUARMState *env, int cpnum, |
| 2396 | ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write, |
| 2397 | void *opaque) |
| 2398 | { |
| 2399 | if (cpnum < 0 || cpnum > 14) { |
| 2400 | cpu_abort(env, "Bad coprocessor number: %i\n", cpnum); |
| 2401 | return; |
| 2402 | } |
| 2403 | |
| 2404 | env->cp[cpnum].cp_read = cp_read; |
| 2405 | env->cp[cpnum].cp_write = cp_write; |
| 2406 | env->cp[cpnum].opaque = opaque; |
| 2407 | } |
| 2408 | |
| 2409 | #endif |
| 2410 | |
| 2411 | /* Note that signed overflow is undefined in C. The following routines are |
| 2412 | careful to use unsigned types where modulo arithmetic is required. |
| 2413 | Failure to do so _will_ break on newer gcc. */ |
| 2414 | |
| 2415 | /* Signed saturating arithmetic. */ |
| 2416 | |
| 2417 | /* Perform 16-bit signed saturating addition. */ |
| 2418 | static inline uint16_t add16_sat(uint16_t a, uint16_t b) |
| 2419 | { |
| 2420 | uint16_t res; |
| 2421 | |
| 2422 | res = a + b; |
| 2423 | if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { |
| 2424 | if (a & 0x8000) |
| 2425 | res = 0x8000; |
| 2426 | else |
| 2427 | res = 0x7fff; |
| 2428 | } |
| 2429 | return res; |
| 2430 | } |
| 2431 | |
| 2432 | /* Perform 8-bit signed saturating addition. */ |
| 2433 | static inline uint8_t add8_sat(uint8_t a, uint8_t b) |
| 2434 | { |
| 2435 | uint8_t res; |
| 2436 | |
| 2437 | res = a + b; |
| 2438 | if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { |
| 2439 | if (a & 0x80) |
| 2440 | res = 0x80; |
| 2441 | else |
| 2442 | res = 0x7f; |
| 2443 | } |
| 2444 | return res; |
| 2445 | } |
| 2446 | |
| 2447 | /* Perform 16-bit signed saturating subtraction. */ |
| 2448 | static inline uint16_t sub16_sat(uint16_t a, uint16_t b) |
| 2449 | { |
| 2450 | uint16_t res; |
| 2451 | |
| 2452 | res = a - b; |
| 2453 | if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { |
| 2454 | if (a & 0x8000) |
| 2455 | res = 0x8000; |
| 2456 | else |
| 2457 | res = 0x7fff; |
| 2458 | } |
| 2459 | return res; |
| 2460 | } |
| 2461 | |
| 2462 | /* Perform 8-bit signed saturating subtraction. */ |
| 2463 | static inline uint8_t sub8_sat(uint8_t a, uint8_t b) |
| 2464 | { |
| 2465 | uint8_t res; |
| 2466 | |
| 2467 | res = a - b; |
| 2468 | if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { |
| 2469 | if (a & 0x80) |
| 2470 | res = 0x80; |
| 2471 | else |
| 2472 | res = 0x7f; |
| 2473 | } |
| 2474 | return res; |
| 2475 | } |
| 2476 | |
| 2477 | #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); |
| 2478 | #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); |
| 2479 | #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); |
| 2480 | #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); |
| 2481 | #define PFX q |
| 2482 | |
| 2483 | #include "op_addsub.h" |
| 2484 | |
| 2485 | /* Unsigned saturating arithmetic. */ |
| 2486 | static inline uint16_t add16_usat(uint16_t a, uint16_t b) |
| 2487 | { |
| 2488 | uint16_t res; |
| 2489 | res = a + b; |
| 2490 | if (res < a) |
| 2491 | res = 0xffff; |
| 2492 | return res; |
| 2493 | } |
| 2494 | |
| 2495 | static inline uint16_t sub16_usat(uint16_t a, uint16_t b) |
| 2496 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2497 | if (a > b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2498 | return a - b; |
| 2499 | else |
| 2500 | return 0; |
| 2501 | } |
| 2502 | |
| 2503 | static inline uint8_t add8_usat(uint8_t a, uint8_t b) |
| 2504 | { |
| 2505 | uint8_t res; |
| 2506 | res = a + b; |
| 2507 | if (res < a) |
| 2508 | res = 0xff; |
| 2509 | return res; |
| 2510 | } |
| 2511 | |
| 2512 | static inline uint8_t sub8_usat(uint8_t a, uint8_t b) |
| 2513 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2514 | if (a > b) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2515 | return a - b; |
| 2516 | else |
| 2517 | return 0; |
| 2518 | } |
| 2519 | |
| 2520 | #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); |
| 2521 | #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); |
| 2522 | #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); |
| 2523 | #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); |
| 2524 | #define PFX uq |
| 2525 | |
| 2526 | #include "op_addsub.h" |
| 2527 | |
| 2528 | /* Signed modulo arithmetic. */ |
| 2529 | #define SARITH16(a, b, n, op) do { \ |
| 2530 | int32_t sum; \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2531 | 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] | 2532 | RESULT(sum, n, 16); \ |
| 2533 | if (sum >= 0) \ |
| 2534 | ge |= 3 << (n * 2); \ |
| 2535 | } while(0) |
| 2536 | |
| 2537 | #define SARITH8(a, b, n, op) do { \ |
| 2538 | int32_t sum; \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2539 | 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] | 2540 | RESULT(sum, n, 8); \ |
| 2541 | if (sum >= 0) \ |
| 2542 | ge |= 1 << n; \ |
| 2543 | } while(0) |
| 2544 | |
| 2545 | |
| 2546 | #define ADD16(a, b, n) SARITH16(a, b, n, +) |
| 2547 | #define SUB16(a, b, n) SARITH16(a, b, n, -) |
| 2548 | #define ADD8(a, b, n) SARITH8(a, b, n, +) |
| 2549 | #define SUB8(a, b, n) SARITH8(a, b, n, -) |
| 2550 | #define PFX s |
| 2551 | #define ARITH_GE |
| 2552 | |
| 2553 | #include "op_addsub.h" |
| 2554 | |
| 2555 | /* Unsigned modulo arithmetic. */ |
| 2556 | #define ADD16(a, b, n) do { \ |
| 2557 | uint32_t sum; \ |
| 2558 | sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ |
| 2559 | RESULT(sum, n, 16); \ |
| 2560 | if ((sum >> 16) == 1) \ |
| 2561 | ge |= 3 << (n * 2); \ |
| 2562 | } while(0) |
| 2563 | |
| 2564 | #define ADD8(a, b, n) do { \ |
| 2565 | uint32_t sum; \ |
| 2566 | sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ |
| 2567 | RESULT(sum, n, 8); \ |
| 2568 | if ((sum >> 8) == 1) \ |
| 2569 | ge |= 1 << n; \ |
| 2570 | } while(0) |
| 2571 | |
| 2572 | #define SUB16(a, b, n) do { \ |
| 2573 | uint32_t sum; \ |
| 2574 | sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ |
| 2575 | RESULT(sum, n, 16); \ |
| 2576 | if ((sum >> 16) == 0) \ |
| 2577 | ge |= 3 << (n * 2); \ |
| 2578 | } while(0) |
| 2579 | |
| 2580 | #define SUB8(a, b, n) do { \ |
| 2581 | uint32_t sum; \ |
| 2582 | sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ |
| 2583 | RESULT(sum, n, 8); \ |
| 2584 | if ((sum >> 8) == 0) \ |
| 2585 | ge |= 1 << n; \ |
| 2586 | } while(0) |
| 2587 | |
| 2588 | #define PFX u |
| 2589 | #define ARITH_GE |
| 2590 | |
| 2591 | #include "op_addsub.h" |
| 2592 | |
| 2593 | /* Halved signed arithmetic. */ |
| 2594 | #define ADD16(a, b, n) \ |
| 2595 | RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) |
| 2596 | #define SUB16(a, b, n) \ |
| 2597 | RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) |
| 2598 | #define ADD8(a, b, n) \ |
| 2599 | RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) |
| 2600 | #define SUB8(a, b, n) \ |
| 2601 | RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) |
| 2602 | #define PFX sh |
| 2603 | |
| 2604 | #include "op_addsub.h" |
| 2605 | |
| 2606 | /* Halved unsigned arithmetic. */ |
| 2607 | #define ADD16(a, b, n) \ |
| 2608 | RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) |
| 2609 | #define SUB16(a, b, n) \ |
| 2610 | RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) |
| 2611 | #define ADD8(a, b, n) \ |
| 2612 | RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) |
| 2613 | #define SUB8(a, b, n) \ |
| 2614 | RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) |
| 2615 | #define PFX uh |
| 2616 | |
| 2617 | #include "op_addsub.h" |
| 2618 | |
| 2619 | static inline uint8_t do_usad(uint8_t a, uint8_t b) |
| 2620 | { |
| 2621 | if (a > b) |
| 2622 | return a - b; |
| 2623 | else |
| 2624 | return b - a; |
| 2625 | } |
| 2626 | |
| 2627 | /* Unsigned sum of absolute byte differences. */ |
| 2628 | uint32_t HELPER(usad8)(uint32_t a, uint32_t b) |
| 2629 | { |
| 2630 | uint32_t sum; |
| 2631 | sum = do_usad(a, b); |
| 2632 | sum += do_usad(a >> 8, b >> 8); |
| 2633 | sum += do_usad(a >> 16, b >>16); |
| 2634 | sum += do_usad(a >> 24, b >> 24); |
| 2635 | return sum; |
| 2636 | } |
| 2637 | |
| 2638 | /* For ARMv6 SEL instruction. */ |
| 2639 | uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b) |
| 2640 | { |
| 2641 | uint32_t mask; |
| 2642 | |
| 2643 | mask = 0; |
| 2644 | if (flags & 1) |
| 2645 | mask |= 0xff; |
| 2646 | if (flags & 2) |
| 2647 | mask |= 0xff00; |
| 2648 | if (flags & 4) |
| 2649 | mask |= 0xff0000; |
| 2650 | if (flags & 8) |
| 2651 | mask |= 0xff000000; |
| 2652 | return (a & mask) | (b & ~mask); |
| 2653 | } |
| 2654 | |
| 2655 | uint32_t HELPER(logicq_cc)(uint64_t val) |
| 2656 | { |
| 2657 | return (val >> 32) | (val != 0); |
| 2658 | } |
| 2659 | |
| 2660 | /* VFP support. We follow the convention used for VFP instrunctions: |
| 2661 | Single precition routines have a "s" suffix, double precision a |
| 2662 | "d" suffix. */ |
| 2663 | |
| 2664 | /* Convert host exception flags to vfp form. */ |
| 2665 | static inline int vfp_exceptbits_from_host(int host_bits) |
| 2666 | { |
| 2667 | int target_bits = 0; |
| 2668 | |
| 2669 | if (host_bits & float_flag_invalid) |
| 2670 | target_bits |= 1; |
| 2671 | if (host_bits & float_flag_divbyzero) |
| 2672 | target_bits |= 2; |
| 2673 | if (host_bits & float_flag_overflow) |
| 2674 | target_bits |= 4; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2675 | 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] | 2676 | target_bits |= 8; |
| 2677 | if (host_bits & float_flag_inexact) |
| 2678 | target_bits |= 0x10; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2679 | if (host_bits & float_flag_input_denormal) |
| 2680 | target_bits |= 0x80; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2681 | return target_bits; |
| 2682 | } |
| 2683 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2684 | uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2685 | { |
| 2686 | int i; |
| 2687 | uint32_t fpscr; |
| 2688 | |
| 2689 | fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff) |
| 2690 | | (env->vfp.vec_len << 16) |
| 2691 | | (env->vfp.vec_stride << 20); |
| 2692 | i = get_float_exception_flags(&env->vfp.fp_status); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2693 | 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] | 2694 | fpscr |= vfp_exceptbits_from_host(i); |
| 2695 | return fpscr; |
| 2696 | } |
| 2697 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2698 | uint32_t vfp_get_fpscr(CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2699 | { |
| 2700 | return HELPER(vfp_get_fpscr)(env); |
| 2701 | } |
| 2702 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2703 | /* Convert vfp exception flags to target form. */ |
| 2704 | static inline int vfp_exceptbits_to_host(int target_bits) |
| 2705 | { |
| 2706 | int host_bits = 0; |
| 2707 | |
| 2708 | if (target_bits & 1) |
| 2709 | host_bits |= float_flag_invalid; |
| 2710 | if (target_bits & 2) |
| 2711 | host_bits |= float_flag_divbyzero; |
| 2712 | if (target_bits & 4) |
| 2713 | host_bits |= float_flag_overflow; |
| 2714 | if (target_bits & 8) |
| 2715 | host_bits |= float_flag_underflow; |
| 2716 | if (target_bits & 0x10) |
| 2717 | host_bits |= float_flag_inexact; |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2718 | if (target_bits & 0x80) |
| 2719 | host_bits |= float_flag_input_denormal; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2720 | return host_bits; |
| 2721 | } |
| 2722 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2723 | 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] | 2724 | { |
| 2725 | int i; |
| 2726 | uint32_t changed; |
| 2727 | |
| 2728 | changed = env->vfp.xregs[ARM_VFP_FPSCR]; |
| 2729 | env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff); |
| 2730 | env->vfp.vec_len = (val >> 16) & 7; |
| 2731 | env->vfp.vec_stride = (val >> 20) & 3; |
| 2732 | |
| 2733 | changed ^= val; |
| 2734 | if (changed & (3 << 22)) { |
| 2735 | i = (val >> 22) & 3; |
| 2736 | switch (i) { |
| 2737 | case 0: |
| 2738 | i = float_round_nearest_even; |
| 2739 | break; |
| 2740 | case 1: |
| 2741 | i = float_round_up; |
| 2742 | break; |
| 2743 | case 2: |
| 2744 | i = float_round_down; |
| 2745 | break; |
| 2746 | case 3: |
| 2747 | i = float_round_to_zero; |
| 2748 | break; |
| 2749 | } |
| 2750 | set_float_rounding_mode(i, &env->vfp.fp_status); |
| 2751 | } |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2752 | if (changed & (1 << 24)) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2753 | 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] | 2754 | set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); |
| 2755 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2756 | if (changed & (1 << 25)) |
| 2757 | 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] | 2758 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2759 | i = vfp_exceptbits_to_host(val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2760 | set_float_exception_flags(i, &env->vfp.fp_status); |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2761 | set_float_exception_flags(0, &env->vfp.standard_fp_status); |
| 2762 | } |
| 2763 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2764 | void vfp_set_fpscr(CPUARMState *env, uint32_t val) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2765 | { |
| 2766 | HELPER(vfp_set_fpscr)(env, val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2767 | } |
| 2768 | |
| 2769 | #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p)) |
| 2770 | |
| 2771 | #define VFP_BINOP(name) \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2772 | 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] | 2773 | { \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2774 | float_status *fpst = fpstp; \ |
| 2775 | return float32_ ## name (a, b, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2776 | } \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2777 | 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] | 2778 | { \ |
David 'Digit' Turner | 1699898 | 2014-03-18 17:23:07 +0100 | [diff] [blame] | 2779 | float_status *fpst = fpstp; \ |
| 2780 | return float64_ ## name (a, b, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2781 | } |
| 2782 | VFP_BINOP(add) |
| 2783 | VFP_BINOP(sub) |
| 2784 | VFP_BINOP(mul) |
| 2785 | VFP_BINOP(div) |
| 2786 | #undef VFP_BINOP |
| 2787 | |
| 2788 | float32 VFP_HELPER(neg, s)(float32 a) |
| 2789 | { |
| 2790 | return float32_chs(a); |
| 2791 | } |
| 2792 | |
| 2793 | float64 VFP_HELPER(neg, d)(float64 a) |
| 2794 | { |
| 2795 | return float64_chs(a); |
| 2796 | } |
| 2797 | |
| 2798 | float32 VFP_HELPER(abs, s)(float32 a) |
| 2799 | { |
| 2800 | return float32_abs(a); |
| 2801 | } |
| 2802 | |
| 2803 | float64 VFP_HELPER(abs, d)(float64 a) |
| 2804 | { |
| 2805 | return float64_abs(a); |
| 2806 | } |
| 2807 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2808 | float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2809 | { |
| 2810 | return float32_sqrt(a, &env->vfp.fp_status); |
| 2811 | } |
| 2812 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2813 | float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2814 | { |
| 2815 | return float64_sqrt(a, &env->vfp.fp_status); |
| 2816 | } |
| 2817 | |
| 2818 | /* XXX: check quiet/signaling case */ |
| 2819 | #define DO_VFP_cmp(p, type) \ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2820 | 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] | 2821 | { \ |
| 2822 | uint32_t flags; \ |
| 2823 | switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \ |
| 2824 | case 0: flags = 0x6; break; \ |
| 2825 | case -1: flags = 0x8; break; \ |
| 2826 | case 1: flags = 0x2; break; \ |
| 2827 | default: case 2: flags = 0x3; break; \ |
| 2828 | } \ |
| 2829 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ |
| 2830 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ |
| 2831 | } \ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2832 | 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] | 2833 | { \ |
| 2834 | uint32_t flags; \ |
| 2835 | switch(type ## _compare(a, b, &env->vfp.fp_status)) { \ |
| 2836 | case 0: flags = 0x6; break; \ |
| 2837 | case -1: flags = 0x8; break; \ |
| 2838 | case 1: flags = 0x2; break; \ |
| 2839 | default: case 2: flags = 0x3; break; \ |
| 2840 | } \ |
| 2841 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ |
| 2842 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ |
| 2843 | } |
| 2844 | DO_VFP_cmp(s, float32) |
| 2845 | DO_VFP_cmp(d, float64) |
| 2846 | #undef DO_VFP_cmp |
| 2847 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2848 | /* Integer to float and float to integer conversions */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2849 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2850 | #define CONV_ITOF(name, fsz, sign) \ |
| 2851 | float##fsz HELPER(name)(uint32_t x, void *fpstp) \ |
| 2852 | { \ |
| 2853 | float_status *fpst = fpstp; \ |
| 2854 | return sign##int32_to_##float##fsz(x, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2855 | } |
| 2856 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2857 | #define CONV_FTOI(name, fsz, sign, round) \ |
| 2858 | uint32_t HELPER(name)(float##fsz x, void *fpstp) \ |
| 2859 | { \ |
| 2860 | float_status *fpst = fpstp; \ |
| 2861 | if (float##fsz##_is_any_nan(x)) { \ |
| 2862 | float_raise(float_flag_invalid, fpst); \ |
| 2863 | return 0; \ |
| 2864 | } \ |
| 2865 | return float##fsz##_to_##sign##int32##round(x, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2866 | } |
| 2867 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2868 | #define FLOAT_CONVS(name, p, fsz, sign) \ |
| 2869 | CONV_ITOF(vfp_##name##to##p, fsz, sign) \ |
| 2870 | CONV_FTOI(vfp_to##name##p, fsz, sign, ) \ |
| 2871 | 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] | 2872 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2873 | FLOAT_CONVS(si, s, 32, ) |
| 2874 | FLOAT_CONVS(si, d, 64, ) |
| 2875 | FLOAT_CONVS(ui, s, 32, u) |
| 2876 | FLOAT_CONVS(ui, d, 64, u) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2877 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2878 | #undef CONV_ITOF |
| 2879 | #undef CONV_FTOI |
| 2880 | #undef FLOAT_CONVS |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2881 | |
| 2882 | /* floating point conversion */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2883 | float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2884 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2885 | float64 r = float32_to_float64(x, &env->vfp.fp_status); |
| 2886 | /* ARM requires that S<->D conversion of any kind of NaN generates |
| 2887 | * a quiet NaN by forcing the most significant frac bit to 1. |
| 2888 | */ |
| 2889 | return float64_maybe_silence_nan(r); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2890 | } |
| 2891 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2892 | float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2893 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2894 | float32 r = float64_to_float32(x, &env->vfp.fp_status); |
| 2895 | /* ARM requires that S<->D conversion of any kind of NaN generates |
| 2896 | * a quiet NaN by forcing the most significant frac bit to 1. |
| 2897 | */ |
| 2898 | return float32_maybe_silence_nan(r); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2899 | } |
| 2900 | |
| 2901 | /* VFP3 fixed point conversion. */ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2902 | #define VFP_CONV_FIX(name, p, fsz, itype, sign) \ |
| 2903 | float##fsz HELPER(vfp_##name##to##p)(uint##fsz##_t x, uint32_t shift, \ |
| 2904 | void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2905 | { \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2906 | float_status *fpst = fpstp; \ |
| 2907 | float##fsz tmp; \ |
| 2908 | tmp = sign##int32_to_##float##fsz((itype##_t)x, fpst); \ |
| 2909 | return float##fsz##_scalbn(tmp, -(int)shift, fpst); \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2910 | } \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2911 | uint##fsz##_t HELPER(vfp_to##name##p)(float##fsz x, uint32_t shift, \ |
| 2912 | void *fpstp) \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2913 | { \ |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2914 | float_status *fpst = fpstp; \ |
| 2915 | float##fsz tmp; \ |
| 2916 | if (float##fsz##_is_any_nan(x)) { \ |
| 2917 | float_raise(float_flag_invalid, fpst); \ |
| 2918 | return 0; \ |
| 2919 | } \ |
| 2920 | tmp = float##fsz##_scalbn(x, shift, fpst); \ |
| 2921 | 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] | 2922 | } |
| 2923 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2924 | VFP_CONV_FIX(sh, d, 64, int16, ) |
| 2925 | VFP_CONV_FIX(sl, d, 64, int32, ) |
| 2926 | VFP_CONV_FIX(uh, d, 64, uint16, u) |
| 2927 | VFP_CONV_FIX(ul, d, 64, uint32, u) |
| 2928 | VFP_CONV_FIX(sh, s, 32, int16, ) |
| 2929 | VFP_CONV_FIX(sl, s, 32, int32, ) |
| 2930 | VFP_CONV_FIX(uh, s, 32, uint16, u) |
| 2931 | VFP_CONV_FIX(ul, s, 32, uint32, u) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2932 | #undef VFP_CONV_FIX |
| 2933 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2934 | /* Half precision conversions. */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2935 | 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] | 2936 | { |
| 2937 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; |
| 2938 | float32 r = float16_to_float32(make_float16(a), ieee, s); |
| 2939 | if (ieee) { |
| 2940 | return float32_maybe_silence_nan(r); |
| 2941 | } |
| 2942 | return r; |
| 2943 | } |
| 2944 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2945 | 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] | 2946 | { |
| 2947 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; |
| 2948 | float16 r = float32_to_float16(a, ieee, s); |
| 2949 | if (ieee) { |
| 2950 | r = float16_maybe_silence_nan(r); |
| 2951 | } |
| 2952 | return float16_val(r); |
| 2953 | } |
| 2954 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2955 | 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] | 2956 | { |
| 2957 | return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status); |
| 2958 | } |
| 2959 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2960 | 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] | 2961 | { |
| 2962 | return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status); |
| 2963 | } |
| 2964 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2965 | 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] | 2966 | { |
| 2967 | return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status); |
| 2968 | } |
| 2969 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2970 | 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] | 2971 | { |
| 2972 | return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status); |
| 2973 | } |
| 2974 | |
| 2975 | #define float32_two make_float32(0x40000000) |
| 2976 | #define float32_three make_float32(0x40400000) |
| 2977 | #define float32_one_point_five make_float32(0x3fc00000) |
| 2978 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2979 | 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] | 2980 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2981 | float_status *s = &env->vfp.standard_fp_status; |
| 2982 | if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || |
| 2983 | (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { |
| 2984 | if (!(float32_is_zero(a) || float32_is_zero(b))) { |
| 2985 | float_raise(float_flag_input_denormal, s); |
| 2986 | } |
| 2987 | return float32_two; |
| 2988 | } |
| 2989 | 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] | 2990 | } |
| 2991 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 2992 | 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] | 2993 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 2994 | float_status *s = &env->vfp.standard_fp_status; |
| 2995 | float32 product; |
| 2996 | if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || |
| 2997 | (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { |
| 2998 | if (!(float32_is_zero(a) || float32_is_zero(b))) { |
| 2999 | float_raise(float_flag_input_denormal, s); |
| 3000 | } |
| 3001 | return float32_one_point_five; |
| 3002 | } |
| 3003 | product = float32_mul(a, b, s); |
| 3004 | 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] | 3005 | } |
| 3006 | |
| 3007 | /* NEON helpers. */ |
| 3008 | |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3009 | /* Constants 256 and 512 are used in some helpers; we avoid relying on |
| 3010 | * int->float conversions at run-time. */ |
| 3011 | #define float64_256 make_float64(0x4070000000000000LL) |
| 3012 | #define float64_512 make_float64(0x4080000000000000LL) |
| 3013 | |
| 3014 | /* The algorithm that must be used to calculate the estimate |
| 3015 | * is specified by the ARM ARM. |
| 3016 | */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3017 | static float64 recip_estimate(float64 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3018 | { |
| 3019 | /* These calculations mustn't set any fp exception flags, |
| 3020 | * so we use a local copy of the fp_status. |
| 3021 | */ |
| 3022 | float_status dummy_status = env->vfp.standard_fp_status; |
| 3023 | float_status *s = &dummy_status; |
| 3024 | /* q = (int)(a * 512.0) */ |
| 3025 | float64 q = float64_mul(float64_512, a, s); |
| 3026 | int64_t q_int = float64_to_int64_round_to_zero(q, s); |
| 3027 | |
| 3028 | /* r = 1.0 / (((double)q + 0.5) / 512.0) */ |
| 3029 | q = int64_to_float64(q_int, s); |
| 3030 | q = float64_add(q, float64_half, s); |
| 3031 | q = float64_div(q, float64_512, s); |
| 3032 | q = float64_div(float64_one, q, s); |
| 3033 | |
| 3034 | /* s = (int)(256.0 * r + 0.5) */ |
| 3035 | q = float64_mul(q, float64_256, s); |
| 3036 | q = float64_add(q, float64_half, s); |
| 3037 | q_int = float64_to_int64_round_to_zero(q, s); |
| 3038 | |
| 3039 | /* return (double)s / 256.0 */ |
| 3040 | return float64_div(int64_to_float64(q_int, s), float64_256, s); |
| 3041 | } |
| 3042 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3043 | float32 HELPER(recpe_f32)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3044 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3045 | float_status *s = &env->vfp.standard_fp_status; |
| 3046 | float64 f64; |
| 3047 | uint32_t val32 = float32_val(a); |
| 3048 | |
| 3049 | int result_exp; |
| 3050 | int a_exp = (val32 & 0x7f800000) >> 23; |
| 3051 | int sign = val32 & 0x80000000; |
| 3052 | |
| 3053 | if (float32_is_any_nan(a)) { |
| 3054 | if (float32_is_signaling_nan(a)) { |
| 3055 | float_raise(float_flag_invalid, s); |
| 3056 | } |
| 3057 | return float32_default_nan; |
| 3058 | } else if (float32_is_infinity(a)) { |
| 3059 | return float32_set_sign(float32_zero, float32_is_neg(a)); |
| 3060 | } else if (float32_is_zero_or_denormal(a)) { |
| 3061 | if (!float32_is_zero(a)) { |
| 3062 | float_raise(float_flag_input_denormal, s); |
| 3063 | } |
| 3064 | float_raise(float_flag_divbyzero, s); |
| 3065 | return float32_set_sign(float32_infinity, float32_is_neg(a)); |
| 3066 | } else if (a_exp >= 253) { |
| 3067 | float_raise(float_flag_underflow, s); |
| 3068 | return float32_set_sign(float32_zero, float32_is_neg(a)); |
| 3069 | } |
| 3070 | |
| 3071 | f64 = make_float64((0x3feULL << 52) |
| 3072 | | ((int64_t)(val32 & 0x7fffff) << 29)); |
| 3073 | |
| 3074 | result_exp = 253 - a_exp; |
| 3075 | |
| 3076 | f64 = recip_estimate(f64, env); |
| 3077 | |
| 3078 | val32 = sign |
| 3079 | | ((result_exp & 0xff) << 23) |
| 3080 | | ((float64_val(f64) >> 29) & 0x7fffff); |
| 3081 | return make_float32(val32); |
| 3082 | } |
| 3083 | |
| 3084 | /* The algorithm that must be used to calculate the estimate |
| 3085 | * is specified by the ARM ARM. |
| 3086 | */ |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3087 | static float64 recip_sqrt_estimate(float64 a, CPUARMState *env) |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3088 | { |
| 3089 | /* These calculations mustn't set any fp exception flags, |
| 3090 | * so we use a local copy of the fp_status. |
| 3091 | */ |
| 3092 | float_status dummy_status = env->vfp.standard_fp_status; |
| 3093 | float_status *s = &dummy_status; |
| 3094 | float64 q; |
| 3095 | int64_t q_int; |
| 3096 | |
| 3097 | if (float64_lt(a, float64_half, s)) { |
| 3098 | /* range 0.25 <= a < 0.5 */ |
| 3099 | |
| 3100 | /* a in units of 1/512 rounded down */ |
| 3101 | /* q0 = (int)(a * 512.0); */ |
| 3102 | q = float64_mul(float64_512, a, s); |
| 3103 | q_int = float64_to_int64_round_to_zero(q, s); |
| 3104 | |
| 3105 | /* reciprocal root r */ |
| 3106 | /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */ |
| 3107 | q = int64_to_float64(q_int, s); |
| 3108 | q = float64_add(q, float64_half, s); |
| 3109 | q = float64_div(q, float64_512, s); |
| 3110 | q = float64_sqrt(q, s); |
| 3111 | q = float64_div(float64_one, q, s); |
| 3112 | } else { |
| 3113 | /* range 0.5 <= a < 1.0 */ |
| 3114 | |
| 3115 | /* a in units of 1/256 rounded down */ |
| 3116 | /* q1 = (int)(a * 256.0); */ |
| 3117 | q = float64_mul(float64_256, a, s); |
| 3118 | int64_t q_int = float64_to_int64_round_to_zero(q, s); |
| 3119 | |
| 3120 | /* reciprocal root r */ |
| 3121 | /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */ |
| 3122 | q = int64_to_float64(q_int, s); |
| 3123 | q = float64_add(q, float64_half, s); |
| 3124 | q = float64_div(q, float64_256, s); |
| 3125 | q = float64_sqrt(q, s); |
| 3126 | q = float64_div(float64_one, q, s); |
| 3127 | } |
| 3128 | /* r in units of 1/256 rounded to nearest */ |
| 3129 | /* s = (int)(256.0 * r + 0.5); */ |
| 3130 | |
| 3131 | q = float64_mul(q, float64_256,s ); |
| 3132 | q = float64_add(q, float64_half, s); |
| 3133 | q_int = float64_to_int64_round_to_zero(q, s); |
| 3134 | |
| 3135 | /* return (double)s / 256.0;*/ |
| 3136 | 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] | 3137 | } |
| 3138 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3139 | float32 HELPER(rsqrte_f32)(float32 a, CPUARMState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3140 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3141 | float_status *s = &env->vfp.standard_fp_status; |
| 3142 | int result_exp; |
| 3143 | float64 f64; |
| 3144 | uint32_t val; |
| 3145 | uint64_t val64; |
| 3146 | |
| 3147 | val = float32_val(a); |
| 3148 | |
| 3149 | if (float32_is_any_nan(a)) { |
| 3150 | if (float32_is_signaling_nan(a)) { |
| 3151 | float_raise(float_flag_invalid, s); |
| 3152 | } |
| 3153 | return float32_default_nan; |
| 3154 | } else if (float32_is_zero_or_denormal(a)) { |
| 3155 | if (!float32_is_zero(a)) { |
| 3156 | float_raise(float_flag_input_denormal, s); |
| 3157 | } |
| 3158 | float_raise(float_flag_divbyzero, s); |
| 3159 | return float32_set_sign(float32_infinity, float32_is_neg(a)); |
| 3160 | } else if (float32_is_neg(a)) { |
| 3161 | float_raise(float_flag_invalid, s); |
| 3162 | return float32_default_nan; |
| 3163 | } else if (float32_is_infinity(a)) { |
| 3164 | return float32_zero; |
| 3165 | } |
| 3166 | |
| 3167 | /* Normalize to a double-precision value between 0.25 and 1.0, |
| 3168 | * preserving the parity of the exponent. */ |
| 3169 | if ((val & 0x800000) == 0) { |
| 3170 | f64 = make_float64(((uint64_t)(val & 0x80000000) << 32) |
| 3171 | | (0x3feULL << 52) |
| 3172 | | ((uint64_t)(val & 0x7fffff) << 29)); |
| 3173 | } else { |
| 3174 | f64 = make_float64(((uint64_t)(val & 0x80000000) << 32) |
| 3175 | | (0x3fdULL << 52) |
| 3176 | | ((uint64_t)(val & 0x7fffff) << 29)); |
| 3177 | } |
| 3178 | |
| 3179 | result_exp = (380 - ((val & 0x7f800000) >> 23)) / 2; |
| 3180 | |
| 3181 | f64 = recip_sqrt_estimate(f64, env); |
| 3182 | |
| 3183 | val64 = float64_val(f64); |
| 3184 | |
| 3185 | val = ((val64 >> 63) & 0x80000000) |
| 3186 | | ((result_exp & 0xff) << 23) |
| 3187 | | ((val64 >> 29) & 0x7fffff); |
| 3188 | return make_float32(val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3189 | } |
| 3190 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3191 | 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] | 3192 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3193 | float64 f64; |
| 3194 | |
| 3195 | if ((a & 0x80000000) == 0) { |
| 3196 | return 0xffffffff; |
| 3197 | } |
| 3198 | |
| 3199 | f64 = make_float64((0x3feULL << 52) |
| 3200 | | ((int64_t)(a & 0x7fffffff) << 21)); |
| 3201 | |
| 3202 | f64 = recip_estimate (f64, env); |
| 3203 | |
| 3204 | return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3205 | } |
| 3206 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3207 | 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] | 3208 | { |
David 'Digit' Turner | 5285864 | 2011-06-03 13:41:05 +0200 | [diff] [blame] | 3209 | float64 f64; |
| 3210 | |
| 3211 | if ((a & 0xc0000000) == 0) { |
| 3212 | return 0xffffffff; |
| 3213 | } |
| 3214 | |
| 3215 | if (a & 0x80000000) { |
| 3216 | f64 = make_float64((0x3feULL << 52) |
| 3217 | | ((uint64_t)(a & 0x7fffffff) << 21)); |
| 3218 | } else { /* bits 31-30 == '01' */ |
| 3219 | f64 = make_float64((0x3fdULL << 52) |
| 3220 | | ((uint64_t)(a & 0x3fffffff) << 22)); |
| 3221 | } |
| 3222 | |
| 3223 | f64 = recip_sqrt_estimate(f64, env); |
| 3224 | |
| 3225 | return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3226 | } |
| 3227 | |
David 'Digit' Turner | e2678e1 | 2014-01-16 15:56:43 +0100 | [diff] [blame] | 3228 | void HELPER(set_teecr)(CPUARMState *env, uint32_t val) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3229 | { |
| 3230 | val &= 1; |
| 3231 | if (env->teecr != val) { |
| 3232 | env->teecr = val; |
| 3233 | tb_flush(env); |
| 3234 | } |
| 3235 | } |