4 #include "host-utils.h"
5 #if !defined(CONFIG_USER_ONLY)
10 static uint32_t cortexa15_cp15_c0_c1[8] = {
11 0x00001131, 0x00011011, 0x02010555, 0x00000000,
12 0x10201105, 0x20000000, 0x01240000, 0x02102211
15 static uint32_t cortexa15_cp15_c0_c2[8] = {
16 0x02101110, 0x13112111, 0x21232041, 0x11112131, 0x10011142, 0, 0, 0
19 static uint32_t cortexa9_cp15_c0_c1[8] =
20 { 0x1031, 0x11, 0x000, 0, 0x00100103, 0x20000000, 0x01230000, 0x00002111 };
22 static uint32_t cortexa9_cp15_c0_c2[8] =
23 { 0x00101111, 0x13112111, 0x21232041, 0x11112131, 0x00111142, 0, 0, 0 };
25 static uint32_t cortexa8_cp15_c0_c1[8] =
26 { 0x1031, 0x11, 0x400, 0, 0x31100003, 0x20000000, 0x01202000, 0x11 };
28 static uint32_t cortexa8_cp15_c0_c2[8] =
29 { 0x00101111, 0x12112111, 0x21232031, 0x11112131, 0x00111142, 0, 0, 0 };
31 static uint32_t mpcore_cp15_c0_c1[8] =
32 { 0x111, 0x1, 0, 0x2, 0x01100103, 0x10020302, 0x01222000, 0 };
34 static uint32_t mpcore_cp15_c0_c2[8] =
35 { 0x00100011, 0x12002111, 0x11221011, 0x01102131, 0x141, 0, 0, 0 };
37 static uint32_t arm1136_cp15_c0_c1[8] =
38 { 0x111, 0x1, 0x2, 0x3, 0x01130003, 0x10030302, 0x01222110, 0 };
40 static uint32_t arm1136_cp15_c0_c2[8] =
41 { 0x00140011, 0x12002111, 0x11231111, 0x01102131, 0x141, 0, 0, 0 };
43 static uint32_t arm1176_cp15_c0_c1[8] =
44 { 0x111, 0x11, 0x33, 0, 0x01130003, 0x10030302, 0x01222100, 0 };
46 static uint32_t arm1176_cp15_c0_c2[8] =
47 { 0x0140011, 0x12002111, 0x11231121, 0x01102131, 0x01141, 0, 0, 0 };
49 static uint32_t cpu_arm_find_by_name(const char *name);
51 static inline void set_feature(CPUARMState *env, int feature)
53 env->features |= 1u << feature;
56 static void cpu_reset_model_id(CPUARMState *env, uint32_t id)
58 env->cp15.c0_cpuid = id;
60 case ARM_CPUID_ARM926:
61 set_feature(env, ARM_FEATURE_V5);
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;
67 case ARM_CPUID_ARM946:
68 set_feature(env, ARM_FEATURE_V5);
69 set_feature(env, ARM_FEATURE_MPU);
70 env->cp15.c0_cachetype = 0x0f004006;
71 env->cp15.c1_sys = 0x00000078;
73 case ARM_CPUID_ARM1026:
74 set_feature(env, ARM_FEATURE_V5);
75 set_feature(env, ARM_FEATURE_VFP);
76 set_feature(env, ARM_FEATURE_AUXCR);
77 env->vfp.xregs[ARM_VFP_FPSID] = 0x410110a0;
78 env->cp15.c0_cachetype = 0x1dd20d2;
79 env->cp15.c1_sys = 0x00090078;
81 case ARM_CPUID_ARM1136:
82 /* This is the 1136 r1, which is a v6K core */
83 set_feature(env, ARM_FEATURE_V6K);
85 case ARM_CPUID_ARM1136_R2:
86 /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
87 * older core than plain "arm1136". In particular this does not
88 * have the v6K features.
90 set_feature(env, ARM_FEATURE_V6);
91 set_feature(env, ARM_FEATURE_VFP);
92 /* These ID register values are correct for 1136 but may be wrong
93 * for 1136_r2 (in particular r0p2 does not actually implement most
94 * of the ID registers).
96 env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4;
97 env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111;
98 env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000;
99 memcpy(env->cp15.c0_c1, arm1136_cp15_c0_c1, 8 * sizeof(uint32_t));
100 memcpy(env->cp15.c0_c2, arm1136_cp15_c0_c2, 8 * sizeof(uint32_t));
101 env->cp15.c0_cachetype = 0x1dd20d2;
102 env->cp15.c1_sys = 0x00050078;
104 case ARM_CPUID_ARM1176:
105 set_feature(env, ARM_FEATURE_V6K);
106 set_feature(env, ARM_FEATURE_VFP);
107 set_feature(env, ARM_FEATURE_VAPA);
108 env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b5;
109 env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111;
110 env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000;
111 memcpy(env->cp15.c0_c1, arm1176_cp15_c0_c1, 8 * sizeof(uint32_t));
112 memcpy(env->cp15.c0_c2, arm1176_cp15_c0_c2, 8 * sizeof(uint32_t));
113 env->cp15.c0_cachetype = 0x1dd20d2;
114 env->cp15.c1_sys = 0x00050078;
116 case ARM_CPUID_ARM11MPCORE:
117 set_feature(env, ARM_FEATURE_V6K);
118 set_feature(env, ARM_FEATURE_VFP);
119 set_feature(env, ARM_FEATURE_VAPA);
120 env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4;
121 env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111;
122 env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000;
123 memcpy(env->cp15.c0_c1, mpcore_cp15_c0_c1, 8 * sizeof(uint32_t));
124 memcpy(env->cp15.c0_c2, mpcore_cp15_c0_c2, 8 * sizeof(uint32_t));
125 env->cp15.c0_cachetype = 0x1dd20d2;
127 case ARM_CPUID_CORTEXA8:
128 set_feature(env, ARM_FEATURE_V7);
129 set_feature(env, ARM_FEATURE_VFP3);
130 set_feature(env, ARM_FEATURE_NEON);
131 set_feature(env, ARM_FEATURE_THUMB2EE);
132 env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c0;
133 env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222;
134 env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100;
135 memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t));
136 memcpy(env->cp15.c0_c2, cortexa8_cp15_c0_c2, 8 * sizeof(uint32_t));
137 env->cp15.c0_cachetype = 0x82048004;
138 env->cp15.c0_clid = (1 << 27) | (2 << 24) | 3;
139 env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */
140 env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */
141 env->cp15.c0_ccsid[2] = 0xf0000000; /* No L2 icache. */
142 env->cp15.c1_sys = 0x00c50078;
144 case ARM_CPUID_CORTEXA9:
145 set_feature(env, ARM_FEATURE_V7);
146 set_feature(env, ARM_FEATURE_VFP3);
147 set_feature(env, ARM_FEATURE_VFP_FP16);
148 set_feature(env, ARM_FEATURE_NEON);
149 set_feature(env, ARM_FEATURE_THUMB2EE);
150 /* Note that A9 supports the MP extensions even for
151 * A9UP and single-core A9MP (which are both different
152 * and valid configurations; we don't model A9UP).
154 set_feature(env, ARM_FEATURE_V7MP);
155 env->vfp.xregs[ARM_VFP_FPSID] = 0x41033090;
156 env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222;
157 env->vfp.xregs[ARM_VFP_MVFR1] = 0x01111111;
158 memcpy(env->cp15.c0_c1, cortexa9_cp15_c0_c1, 8 * sizeof(uint32_t));
159 memcpy(env->cp15.c0_c2, cortexa9_cp15_c0_c2, 8 * sizeof(uint32_t));
160 env->cp15.c0_cachetype = 0x80038003;
161 env->cp15.c0_clid = (1 << 27) | (1 << 24) | 3;
162 env->cp15.c0_ccsid[0] = 0xe00fe015; /* 16k L1 dcache. */
163 env->cp15.c0_ccsid[1] = 0x200fe015; /* 16k L1 icache. */
164 env->cp15.c1_sys = 0x00c50078;
166 case ARM_CPUID_CORTEXA15:
167 set_feature(env, ARM_FEATURE_V7);
168 set_feature(env, ARM_FEATURE_VFP4);
169 set_feature(env, ARM_FEATURE_VFP_FP16);
170 set_feature(env, ARM_FEATURE_NEON);
171 set_feature(env, ARM_FEATURE_THUMB2EE);
172 set_feature(env, ARM_FEATURE_ARM_DIV);
173 set_feature(env, ARM_FEATURE_V7MP);
174 set_feature(env, ARM_FEATURE_GENERIC_TIMER);
175 env->vfp.xregs[ARM_VFP_FPSID] = 0x410430f0;
176 env->vfp.xregs[ARM_VFP_MVFR0] = 0x10110222;
177 env->vfp.xregs[ARM_VFP_MVFR1] = 0x11111111;
178 memcpy(env->cp15.c0_c1, cortexa15_cp15_c0_c1, 8 * sizeof(uint32_t));
179 memcpy(env->cp15.c0_c2, cortexa15_cp15_c0_c2, 8 * sizeof(uint32_t));
180 env->cp15.c0_cachetype = 0x8444c004;
181 env->cp15.c0_clid = 0x0a200023;
182 env->cp15.c0_ccsid[0] = 0x701fe00a; /* 32K L1 dcache */
183 env->cp15.c0_ccsid[1] = 0x201fe00a; /* 32K L1 icache */
184 env->cp15.c0_ccsid[2] = 0x711fe07a; /* 4096K L2 unified cache */
185 env->cp15.c1_sys = 0x00c50078;
187 case ARM_CPUID_CORTEXM3:
188 set_feature(env, ARM_FEATURE_V7);
189 set_feature(env, ARM_FEATURE_M);
191 case ARM_CPUID_ANY: /* For userspace emulation. */
192 set_feature(env, ARM_FEATURE_V7);
193 set_feature(env, ARM_FEATURE_VFP4);
194 set_feature(env, ARM_FEATURE_VFP_FP16);
195 set_feature(env, ARM_FEATURE_NEON);
196 set_feature(env, ARM_FEATURE_THUMB2EE);
197 set_feature(env, ARM_FEATURE_ARM_DIV);
198 set_feature(env, ARM_FEATURE_V7MP);
200 case ARM_CPUID_TI915T:
201 case ARM_CPUID_TI925T:
202 set_feature(env, ARM_FEATURE_V4T);
203 set_feature(env, ARM_FEATURE_OMAPCP);
204 env->cp15.c0_cpuid = ARM_CPUID_TI925T; /* Depends on wiring. */
205 env->cp15.c0_cachetype = 0x5109149;
206 env->cp15.c1_sys = 0x00000070;
207 env->cp15.c15_i_max = 0x000;
208 env->cp15.c15_i_min = 0xff0;
210 case ARM_CPUID_PXA250:
211 case ARM_CPUID_PXA255:
212 case ARM_CPUID_PXA260:
213 case ARM_CPUID_PXA261:
214 case ARM_CPUID_PXA262:
215 set_feature(env, ARM_FEATURE_V5);
216 set_feature(env, ARM_FEATURE_XSCALE);
217 /* JTAG_ID is ((id << 28) | 0x09265013) */
218 env->cp15.c0_cachetype = 0xd172172;
219 env->cp15.c1_sys = 0x00000078;
221 case ARM_CPUID_PXA270_A0:
222 case ARM_CPUID_PXA270_A1:
223 case ARM_CPUID_PXA270_B0:
224 case ARM_CPUID_PXA270_B1:
225 case ARM_CPUID_PXA270_C0:
226 case ARM_CPUID_PXA270_C5:
227 set_feature(env, ARM_FEATURE_V5);
228 set_feature(env, ARM_FEATURE_XSCALE);
229 /* JTAG_ID is ((id << 28) | 0x09265013) */
230 set_feature(env, ARM_FEATURE_IWMMXT);
231 env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
232 env->cp15.c0_cachetype = 0xd172172;
233 env->cp15.c1_sys = 0x00000078;
235 case ARM_CPUID_SA1100:
236 case ARM_CPUID_SA1110:
237 set_feature(env, ARM_FEATURE_STRONGARM);
238 env->cp15.c1_sys = 0x00000070;
241 cpu_abort(env, "Bad CPU ID: %x\n", id);
245 /* Some features automatically imply others: */
246 if (arm_feature(env, ARM_FEATURE_V7)) {
247 set_feature(env, ARM_FEATURE_VAPA);
248 set_feature(env, ARM_FEATURE_THUMB2);
249 if (!arm_feature(env, ARM_FEATURE_M)) {
250 set_feature(env, ARM_FEATURE_V6K);
252 set_feature(env, ARM_FEATURE_V6);
255 if (arm_feature(env, ARM_FEATURE_V6K)) {
256 set_feature(env, ARM_FEATURE_V6);
257 set_feature(env, ARM_FEATURE_MVFR);
259 if (arm_feature(env, ARM_FEATURE_V6)) {
260 set_feature(env, ARM_FEATURE_V5);
261 if (!arm_feature(env, ARM_FEATURE_M)) {
262 set_feature(env, ARM_FEATURE_AUXCR);
265 if (arm_feature(env, ARM_FEATURE_V5)) {
266 set_feature(env, ARM_FEATURE_V4T);
268 if (arm_feature(env, ARM_FEATURE_M)) {
269 set_feature(env, ARM_FEATURE_THUMB_DIV);
271 if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
272 set_feature(env, ARM_FEATURE_THUMB_DIV);
274 if (arm_feature(env, ARM_FEATURE_VFP4)) {
275 set_feature(env, ARM_FEATURE_VFP3);
277 if (arm_feature(env, ARM_FEATURE_VFP3)) {
278 set_feature(env, ARM_FEATURE_VFP);
282 /* TODO Move contents into arm_cpu_reset() in cpu.c,
283 * once cpu_reset_model_id() is eliminated,
284 * and then forward to cpu_reset() here.
286 void cpu_state_reset(CPUARMState *env)
291 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
292 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
293 log_cpu_state(env, 0);
296 id = env->cp15.c0_cpuid;
297 tmp = env->cp15.c15_config_base_address;
298 memset(env, 0, offsetof(CPUARMState, breakpoints));
300 cpu_reset_model_id(env, id);
301 env->cp15.c15_config_base_address = tmp;
302 #if defined (CONFIG_USER_ONLY)
303 env->uncached_cpsr = ARM_CPU_MODE_USR;
304 /* For user mode we must enable access to coprocessors */
305 env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30;
306 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
307 env->cp15.c15_cpar = 3;
308 } else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
309 env->cp15.c15_cpar = 1;
312 /* SVC mode with interrupts disabled. */
313 env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
314 /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is
315 clear at reset. Initial SP and PC are loaded from ROM. */
319 env->uncached_cpsr &= ~CPSR_I;
322 /* We should really use ldl_phys here, in case the guest
323 modified flash and reset itself. However images
324 loaded via -kernel have not been copied yet, so load the
325 values directly from there. */
326 env->regs[13] = ldl_p(rom);
329 env->regs[15] = pc & ~1;
332 env->vfp.xregs[ARM_VFP_FPEXC] = 0;
333 env->cp15.c2_base_mask = 0xffffc000u;
334 /* v7 performance monitor control register: same implementor
335 * field as main ID register, and we implement no event counters.
337 env->cp15.c9_pmcr = (id & 0xff000000);
339 set_flush_to_zero(1, &env->vfp.standard_fp_status);
340 set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
341 set_default_nan_mode(1, &env->vfp.standard_fp_status);
342 set_float_detect_tininess(float_tininess_before_rounding,
343 &env->vfp.fp_status);
344 set_float_detect_tininess(float_tininess_before_rounding,
345 &env->vfp.standard_fp_status);
347 /* Reset is a state change for some CPUARMState fields which we
348 * bake assumptions about into translated code, so we need to
354 static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
358 /* VFP data registers are always little-endian. */
359 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
361 stfq_le_p(buf, env->vfp.regs[reg]);
364 if (arm_feature(env, ARM_FEATURE_NEON)) {
365 /* Aliases for Q regs. */
368 stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]);
369 stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]);
373 switch (reg - nregs) {
374 case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4;
375 case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4;
376 case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4;
381 static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
385 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
387 env->vfp.regs[reg] = ldfq_le_p(buf);
390 if (arm_feature(env, ARM_FEATURE_NEON)) {
393 env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf);
394 env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8);
398 switch (reg - nregs) {
399 case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
400 case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4;
401 case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4;
406 CPUARMState *cpu_arm_init(const char *cpu_model)
411 static int inited = 0;
413 id = cpu_arm_find_by_name(cpu_model);
416 cpu = ARM_CPU(object_new(TYPE_ARM_CPU));
419 if (tcg_enabled() && !inited) {
421 arm_translate_init();
424 env->cpu_model_str = cpu_model;
425 env->cp15.c0_cpuid = id;
426 cpu_state_reset(env);
427 if (arm_feature(env, ARM_FEATURE_NEON)) {
428 gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
429 51, "arm-neon.xml", 0);
430 } else if (arm_feature(env, ARM_FEATURE_VFP3)) {
431 gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
432 35, "arm-vfp3.xml", 0);
433 } else if (arm_feature(env, ARM_FEATURE_VFP)) {
434 gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
435 19, "arm-vfp.xml", 0);
446 static const struct arm_cpu_t arm_cpu_names[] = {
447 { ARM_CPUID_ARM926, "arm926"},
448 { ARM_CPUID_ARM946, "arm946"},
449 { ARM_CPUID_ARM1026, "arm1026"},
450 { ARM_CPUID_ARM1136, "arm1136"},
451 { ARM_CPUID_ARM1136_R2, "arm1136-r2"},
452 { ARM_CPUID_ARM1176, "arm1176"},
453 { ARM_CPUID_ARM11MPCORE, "arm11mpcore"},
454 { ARM_CPUID_CORTEXM3, "cortex-m3"},
455 { ARM_CPUID_CORTEXA8, "cortex-a8"},
456 { ARM_CPUID_CORTEXA9, "cortex-a9"},
457 { ARM_CPUID_CORTEXA15, "cortex-a15" },
458 { ARM_CPUID_TI925T, "ti925t" },
459 { ARM_CPUID_PXA250, "pxa250" },
460 { ARM_CPUID_SA1100, "sa1100" },
461 { ARM_CPUID_SA1110, "sa1110" },
462 { ARM_CPUID_PXA255, "pxa255" },
463 { ARM_CPUID_PXA260, "pxa260" },
464 { ARM_CPUID_PXA261, "pxa261" },
465 { ARM_CPUID_PXA262, "pxa262" },
466 { ARM_CPUID_PXA270, "pxa270" },
467 { ARM_CPUID_PXA270_A0, "pxa270-a0" },
468 { ARM_CPUID_PXA270_A1, "pxa270-a1" },
469 { ARM_CPUID_PXA270_B0, "pxa270-b0" },
470 { ARM_CPUID_PXA270_B1, "pxa270-b1" },
471 { ARM_CPUID_PXA270_C0, "pxa270-c0" },
472 { ARM_CPUID_PXA270_C5, "pxa270-c5" },
473 { ARM_CPUID_ANY, "any"},
477 void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf)
481 (*cpu_fprintf)(f, "Available CPUs:\n");
482 for (i = 0; arm_cpu_names[i].name; i++) {
483 (*cpu_fprintf)(f, " %s\n", arm_cpu_names[i].name);
487 /* return 0 if not found */
488 static uint32_t cpu_arm_find_by_name(const char *name)
494 for (i = 0; arm_cpu_names[i].name; i++) {
495 if (strcmp(name, arm_cpu_names[i].name) == 0) {
496 id = arm_cpu_names[i].id;
503 static int bad_mode_switch(CPUARMState *env, int mode)
505 /* Return true if it is not valid for us to switch to
506 * this CPU mode (ie all the UNPREDICTABLE cases in
507 * the ARM ARM CPSRWriteByInstr pseudocode).
510 case ARM_CPU_MODE_USR:
511 case ARM_CPU_MODE_SYS:
512 case ARM_CPU_MODE_SVC:
513 case ARM_CPU_MODE_ABT:
514 case ARM_CPU_MODE_UND:
515 case ARM_CPU_MODE_IRQ:
516 case ARM_CPU_MODE_FIQ:
523 uint32_t cpsr_read(CPUARMState *env)
527 return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) |
528 (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27)
529 | (env->thumb << 5) | ((env->condexec_bits & 3) << 25)
530 | ((env->condexec_bits & 0xfc) << 8)
534 void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
536 if (mask & CPSR_NZCV) {
537 env->ZF = (~val) & CPSR_Z;
539 env->CF = (val >> 29) & 1;
540 env->VF = (val << 3) & 0x80000000;
543 env->QF = ((val & CPSR_Q) != 0);
545 env->thumb = ((val & CPSR_T) != 0);
546 if (mask & CPSR_IT_0_1) {
547 env->condexec_bits &= ~3;
548 env->condexec_bits |= (val >> 25) & 3;
550 if (mask & CPSR_IT_2_7) {
551 env->condexec_bits &= 3;
552 env->condexec_bits |= (val >> 8) & 0xfc;
554 if (mask & CPSR_GE) {
555 env->GE = (val >> 16) & 0xf;
558 if ((env->uncached_cpsr ^ val) & mask & CPSR_M) {
559 if (bad_mode_switch(env, val & CPSR_M)) {
560 /* Attempt to switch to an invalid mode: this is UNPREDICTABLE.
561 * We choose to ignore the attempt and leave the CPSR M field
566 switch_mode(env, val & CPSR_M);
569 mask &= ~CACHED_CPSR_BITS;
570 env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask);
573 /* Sign/zero extend */
574 uint32_t HELPER(sxtb16)(uint32_t x)
577 res = (uint16_t)(int8_t)x;
578 res |= (uint32_t)(int8_t)(x >> 16) << 16;
582 uint32_t HELPER(uxtb16)(uint32_t x)
585 res = (uint16_t)(uint8_t)x;
586 res |= (uint32_t)(uint8_t)(x >> 16) << 16;
590 uint32_t HELPER(clz)(uint32_t x)
595 int32_t HELPER(sdiv)(int32_t num, int32_t den)
599 if (num == INT_MIN && den == -1)
604 uint32_t HELPER(udiv)(uint32_t num, uint32_t den)
611 uint32_t HELPER(rbit)(uint32_t x)
613 x = ((x & 0xff000000) >> 24)
614 | ((x & 0x00ff0000) >> 8)
615 | ((x & 0x0000ff00) << 8)
616 | ((x & 0x000000ff) << 24);
617 x = ((x & 0xf0f0f0f0) >> 4)
618 | ((x & 0x0f0f0f0f) << 4);
619 x = ((x & 0x88888888) >> 3)
620 | ((x & 0x44444444) >> 1)
621 | ((x & 0x22222222) << 1)
622 | ((x & 0x11111111) << 3);
626 uint32_t HELPER(abs)(uint32_t x)
628 return ((int32_t)x < 0) ? -x : x;
631 #if defined(CONFIG_USER_ONLY)
633 void do_interrupt (CPUARMState *env)
635 env->exception_index = -1;
638 int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw,
642 env->exception_index = EXCP_PREFETCH_ABORT;
643 env->cp15.c6_insn = address;
645 env->exception_index = EXCP_DATA_ABORT;
646 env->cp15.c6_data = address;
651 /* These should probably raise undefined insn exceptions. */
652 void HELPER(set_cp)(CPUARMState *env, uint32_t insn, uint32_t val)
654 int op1 = (insn >> 8) & 0xf;
655 cpu_abort(env, "cp%i insn %08x\n", op1, insn);
659 uint32_t HELPER(get_cp)(CPUARMState *env, uint32_t insn)
661 int op1 = (insn >> 8) & 0xf;
662 cpu_abort(env, "cp%i insn %08x\n", op1, insn);
666 void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
668 cpu_abort(env, "cp15 insn %08x\n", insn);
671 uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
673 cpu_abort(env, "cp15 insn %08x\n", insn);
676 /* These should probably raise undefined insn exceptions. */
677 void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
679 cpu_abort(env, "v7m_mrs %d\n", reg);
682 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
684 cpu_abort(env, "v7m_mrs %d\n", reg);
688 void switch_mode(CPUARMState *env, int mode)
690 if (mode != ARM_CPU_MODE_USR)
691 cpu_abort(env, "Tried to switch out of user mode\n");
694 void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
696 cpu_abort(env, "banked r13 write\n");
699 uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
701 cpu_abort(env, "banked r13 read\n");
707 /* Map CPU modes onto saved register banks. */
708 static inline int bank_number(CPUARMState *env, int mode)
711 case ARM_CPU_MODE_USR:
712 case ARM_CPU_MODE_SYS:
714 case ARM_CPU_MODE_SVC:
716 case ARM_CPU_MODE_ABT:
718 case ARM_CPU_MODE_UND:
720 case ARM_CPU_MODE_IRQ:
722 case ARM_CPU_MODE_FIQ:
725 cpu_abort(env, "Bad mode %x\n", mode);
729 void switch_mode(CPUARMState *env, int mode)
734 old_mode = env->uncached_cpsr & CPSR_M;
735 if (mode == old_mode)
738 if (old_mode == ARM_CPU_MODE_FIQ) {
739 memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t));
740 memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t));
741 } else if (mode == ARM_CPU_MODE_FIQ) {
742 memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t));
743 memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t));
746 i = bank_number(env, old_mode);
747 env->banked_r13[i] = env->regs[13];
748 env->banked_r14[i] = env->regs[14];
749 env->banked_spsr[i] = env->spsr;
751 i = bank_number(env, mode);
752 env->regs[13] = env->banked_r13[i];
753 env->regs[14] = env->banked_r14[i];
754 env->spsr = env->banked_spsr[i];
757 static void v7m_push(CPUARMState *env, uint32_t val)
760 stl_phys(env->regs[13], val);
763 static uint32_t v7m_pop(CPUARMState *env)
766 val = ldl_phys(env->regs[13]);
771 /* Switch to V7M main or process stack pointer. */
772 static void switch_v7m_sp(CPUARMState *env, int process)
775 if (env->v7m.current_sp != process) {
776 tmp = env->v7m.other_sp;
777 env->v7m.other_sp = env->regs[13];
779 env->v7m.current_sp = process;
783 static void do_v7m_exception_exit(CPUARMState *env)
788 type = env->regs[15];
789 if (env->v7m.exception != 0)
790 armv7m_nvic_complete_irq(env->nvic, env->v7m.exception);
792 /* Switch to the target stack. */
793 switch_v7m_sp(env, (type & 4) != 0);
795 env->regs[0] = v7m_pop(env);
796 env->regs[1] = v7m_pop(env);
797 env->regs[2] = v7m_pop(env);
798 env->regs[3] = v7m_pop(env);
799 env->regs[12] = v7m_pop(env);
800 env->regs[14] = v7m_pop(env);
801 env->regs[15] = v7m_pop(env);
803 xpsr_write(env, xpsr, 0xfffffdff);
804 /* Undo stack alignment. */
807 /* ??? The exception return type specifies Thread/Handler mode. However
808 this is also implied by the xPSR value. Not sure what to do
809 if there is a mismatch. */
810 /* ??? Likewise for mismatches between the CONTROL register and the stack
814 static void do_interrupt_v7m(CPUARMState *env)
816 uint32_t xpsr = xpsr_read(env);
821 if (env->v7m.current_sp)
823 if (env->v7m.exception == 0)
826 /* For exceptions we just mark as pending on the NVIC, and let that
828 /* TODO: Need to escalate if the current priority is higher than the
829 one we're raising. */
830 switch (env->exception_index) {
832 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
836 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC);
838 case EXCP_PREFETCH_ABORT:
839 case EXCP_DATA_ABORT:
840 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM);
843 if (semihosting_enabled) {
845 nr = arm_lduw_code(env->regs[15], env->bswap_code) & 0xff;
848 env->regs[0] = do_arm_semihosting(env);
852 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG);
855 env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic);
857 case EXCP_EXCEPTION_EXIT:
858 do_v7m_exception_exit(env);
861 cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index);
862 return; /* Never happens. Keep compiler happy. */
865 /* Align stack pointer. */
866 /* ??? Should only do this if Configuration Control Register
867 STACKALIGN bit is set. */
868 if (env->regs[13] & 4) {
872 /* Switch to the handler mode. */
874 v7m_push(env, env->regs[15]);
875 v7m_push(env, env->regs[14]);
876 v7m_push(env, env->regs[12]);
877 v7m_push(env, env->regs[3]);
878 v7m_push(env, env->regs[2]);
879 v7m_push(env, env->regs[1]);
880 v7m_push(env, env->regs[0]);
881 switch_v7m_sp(env, 0);
883 env->condexec_bits = 0;
885 addr = ldl_phys(env->v7m.vecbase + env->v7m.exception * 4);
886 env->regs[15] = addr & 0xfffffffe;
887 env->thumb = addr & 1;
890 /* Handle a CPU exception. */
891 void do_interrupt(CPUARMState *env)
899 do_interrupt_v7m(env);
902 /* TODO: Vectored interrupt controller. */
903 switch (env->exception_index) {
905 new_mode = ARM_CPU_MODE_UND;
914 if (semihosting_enabled) {
915 /* Check for semihosting interrupt. */
917 mask = arm_lduw_code(env->regs[15] - 2, env->bswap_code) & 0xff;
919 mask = arm_ldl_code(env->regs[15] - 4, env->bswap_code)
922 /* Only intercept calls from privileged modes, to provide some
923 semblance of security. */
924 if (((mask == 0x123456 && !env->thumb)
925 || (mask == 0xab && env->thumb))
926 && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) {
927 env->regs[0] = do_arm_semihosting(env);
931 new_mode = ARM_CPU_MODE_SVC;
934 /* The PC already points to the next instruction. */
938 /* See if this is a semihosting syscall. */
939 if (env->thumb && semihosting_enabled) {
940 mask = arm_lduw_code(env->regs[15], env->bswap_code) & 0xff;
942 && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) {
944 env->regs[0] = do_arm_semihosting(env);
948 env->cp15.c5_insn = 2;
949 /* Fall through to prefetch abort. */
950 case EXCP_PREFETCH_ABORT:
951 new_mode = ARM_CPU_MODE_ABT;
953 mask = CPSR_A | CPSR_I;
956 case EXCP_DATA_ABORT:
957 new_mode = ARM_CPU_MODE_ABT;
959 mask = CPSR_A | CPSR_I;
963 new_mode = ARM_CPU_MODE_IRQ;
965 /* Disable IRQ and imprecise data aborts. */
966 mask = CPSR_A | CPSR_I;
970 new_mode = ARM_CPU_MODE_FIQ;
972 /* Disable FIQ, IRQ and imprecise data aborts. */
973 mask = CPSR_A | CPSR_I | CPSR_F;
977 cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index);
978 return; /* Never happens. Keep compiler happy. */
981 if (env->cp15.c1_sys & (1 << 13)) {
984 switch_mode (env, new_mode);
985 env->spsr = cpsr_read(env);
987 env->condexec_bits = 0;
988 /* Switch to the new mode, and to the correct instruction set. */
989 env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode;
990 env->uncached_cpsr |= mask;
991 /* this is a lie, as the was no c1_sys on V4T/V5, but who cares
992 * and we should just guard the thumb mode on V4 */
993 if (arm_feature(env, ARM_FEATURE_V4T)) {
994 env->thumb = (env->cp15.c1_sys & (1 << 30)) != 0;
996 env->regs[14] = env->regs[15] + offset;
997 env->regs[15] = addr;
998 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
1001 /* Check section/page access permissions.
1002 Returns the page protection flags, or zero if the access is not
1004 static inline int check_ap(CPUARMState *env, int ap, int domain_prot,
1005 int access_type, int is_user)
1009 if (domain_prot == 3) {
1010 return PAGE_READ | PAGE_WRITE;
1013 if (access_type == 1)
1016 prot_ro = PAGE_READ;
1020 if (access_type == 1)
1022 switch ((env->cp15.c1_sys >> 8) & 3) {
1024 return is_user ? 0 : PAGE_READ;
1031 return is_user ? 0 : PAGE_READ | PAGE_WRITE;
1036 return PAGE_READ | PAGE_WRITE;
1038 return PAGE_READ | PAGE_WRITE;
1039 case 4: /* Reserved. */
1042 return is_user ? 0 : prot_ro;
1046 if (!arm_feature (env, ARM_FEATURE_V6K))
1054 static uint32_t get_level1_table_address(CPUARMState *env, uint32_t address)
1058 if (address & env->cp15.c2_mask)
1059 table = env->cp15.c2_base1 & 0xffffc000;
1061 table = env->cp15.c2_base0 & env->cp15.c2_base_mask;
1063 table |= (address >> 18) & 0x3ffc;
1067 static int get_phys_addr_v5(CPUARMState *env, uint32_t address, int access_type,
1068 int is_user, uint32_t *phys_ptr, int *prot,
1069 target_ulong *page_size)
1080 /* Pagetable walk. */
1081 /* Lookup l1 descriptor. */
1082 table = get_level1_table_address(env, address);
1083 desc = ldl_phys(table);
1085 domain = (desc >> 5) & 0x0f;
1086 domain_prot = (env->cp15.c3 >> (domain * 2)) & 3;
1088 /* Section translation fault. */
1092 if (domain_prot == 0 || domain_prot == 2) {
1094 code = 9; /* Section domain fault. */
1096 code = 11; /* Page domain fault. */
1101 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
1102 ap = (desc >> 10) & 3;
1104 *page_size = 1024 * 1024;
1106 /* Lookup l2 entry. */
1108 /* Coarse pagetable. */
1109 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
1111 /* Fine pagetable. */
1112 table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
1114 desc = ldl_phys(table);
1116 case 0: /* Page translation fault. */
1119 case 1: /* 64k page. */
1120 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
1121 ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
1122 *page_size = 0x10000;
1124 case 2: /* 4k page. */
1125 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
1126 ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
1127 *page_size = 0x1000;
1129 case 3: /* 1k page. */
1131 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
1132 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
1134 /* Page translation fault. */
1139 phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
1141 ap = (desc >> 4) & 3;
1145 /* Never happens, but compiler isn't smart enough to tell. */
1150 *prot = check_ap(env, ap, domain_prot, access_type, is_user);
1152 /* Access permission fault. */
1156 *phys_ptr = phys_addr;
1159 return code | (domain << 4);
1162 static int get_phys_addr_v6(CPUARMState *env, uint32_t address, int access_type,
1163 int is_user, uint32_t *phys_ptr, int *prot,
1164 target_ulong *page_size)
1176 /* Pagetable walk. */
1177 /* Lookup l1 descriptor. */
1178 table = get_level1_table_address(env, address);
1179 desc = ldl_phys(table);
1182 /* Section translation fault. */
1186 } else if (type == 2 && (desc & (1 << 18))) {
1190 /* Section or page. */
1191 domain = (desc >> 5) & 0x0f;
1193 domain_prot = (env->cp15.c3 >> (domain * 2)) & 3;
1194 if (domain_prot == 0 || domain_prot == 2) {
1196 code = 9; /* Section domain fault. */
1198 code = 11; /* Page domain fault. */
1202 if (desc & (1 << 18)) {
1204 phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
1205 *page_size = 0x1000000;
1208 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
1209 *page_size = 0x100000;
1211 ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
1212 xn = desc & (1 << 4);
1215 /* Lookup l2 entry. */
1216 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
1217 desc = ldl_phys(table);
1218 ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
1220 case 0: /* Page translation fault. */
1223 case 1: /* 64k page. */
1224 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
1225 xn = desc & (1 << 15);
1226 *page_size = 0x10000;
1228 case 2: case 3: /* 4k page. */
1229 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
1231 *page_size = 0x1000;
1234 /* Never happens, but compiler isn't smart enough to tell. */
1239 if (domain_prot == 3) {
1240 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1242 if (xn && access_type == 2)
1245 /* The simplified model uses AP[0] as an access control bit. */
1246 if ((env->cp15.c1_sys & (1 << 29)) && (ap & 1) == 0) {
1247 /* Access flag fault. */
1248 code = (code == 15) ? 6 : 3;
1251 *prot = check_ap(env, ap, domain_prot, access_type, is_user);
1253 /* Access permission fault. */
1260 *phys_ptr = phys_addr;
1263 return code | (domain << 4);
1266 static int get_phys_addr_mpu(CPUARMState *env, uint32_t address, int access_type,
1267 int is_user, uint32_t *phys_ptr, int *prot)
1273 *phys_ptr = address;
1274 for (n = 7; n >= 0; n--) {
1275 base = env->cp15.c6_region[n];
1276 if ((base & 1) == 0)
1278 mask = 1 << ((base >> 1) & 0x1f);
1279 /* Keep this shift separate from the above to avoid an
1280 (undefined) << 32. */
1281 mask = (mask << 1) - 1;
1282 if (((base ^ address) & ~mask) == 0)
1288 if (access_type == 2) {
1289 mask = env->cp15.c5_insn;
1291 mask = env->cp15.c5_data;
1293 mask = (mask >> (n * 4)) & 0xf;
1300 *prot = PAGE_READ | PAGE_WRITE;
1305 *prot |= PAGE_WRITE;
1308 *prot = PAGE_READ | PAGE_WRITE;
1319 /* Bad permission. */
1326 static inline int get_phys_addr(CPUARMState *env, uint32_t address,
1327 int access_type, int is_user,
1328 uint32_t *phys_ptr, int *prot,
1329 target_ulong *page_size)
1331 /* Fast Context Switch Extension. */
1332 if (address < 0x02000000)
1333 address += env->cp15.c13_fcse;
1335 if ((env->cp15.c1_sys & 1) == 0) {
1336 /* MMU/MPU disabled. */
1337 *phys_ptr = address;
1338 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1339 *page_size = TARGET_PAGE_SIZE;
1341 } else if (arm_feature(env, ARM_FEATURE_MPU)) {
1342 *page_size = TARGET_PAGE_SIZE;
1343 return get_phys_addr_mpu(env, address, access_type, is_user, phys_ptr,
1345 } else if (env->cp15.c1_sys & (1 << 23)) {
1346 return get_phys_addr_v6(env, address, access_type, is_user, phys_ptr,
1349 return get_phys_addr_v5(env, address, access_type, is_user, phys_ptr,
1354 int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address,
1355 int access_type, int mmu_idx)
1358 target_ulong page_size;
1362 is_user = mmu_idx == MMU_USER_IDX;
1363 ret = get_phys_addr(env, address, access_type, is_user, &phys_addr, &prot,
1366 /* Map a single [sub]page. */
1367 phys_addr &= ~(uint32_t)0x3ff;
1368 address &= ~(uint32_t)0x3ff;
1369 tlb_set_page (env, address, phys_addr, prot, mmu_idx, page_size);
1373 if (access_type == 2) {
1374 env->cp15.c5_insn = ret;
1375 env->cp15.c6_insn = address;
1376 env->exception_index = EXCP_PREFETCH_ABORT;
1378 env->cp15.c5_data = ret;
1379 if (access_type == 1 && arm_feature(env, ARM_FEATURE_V6))
1380 env->cp15.c5_data |= (1 << 11);
1381 env->cp15.c6_data = address;
1382 env->exception_index = EXCP_DATA_ABORT;
1387 target_phys_addr_t cpu_get_phys_page_debug(CPUARMState *env, target_ulong addr)
1390 target_ulong page_size;
1394 ret = get_phys_addr(env, addr, 0, 0, &phys_addr, &prot, &page_size);
1402 void HELPER(set_cp)(CPUARMState *env, uint32_t insn, uint32_t val)
1404 int cp_num = (insn >> 8) & 0xf;
1405 int cp_info = (insn >> 5) & 7;
1406 int src = (insn >> 16) & 0xf;
1407 int operand = insn & 0xf;
1409 if (env->cp[cp_num].cp_write)
1410 env->cp[cp_num].cp_write(env->cp[cp_num].opaque,
1411 cp_info, src, operand, val);
1414 uint32_t HELPER(get_cp)(CPUARMState *env, uint32_t insn)
1416 int cp_num = (insn >> 8) & 0xf;
1417 int cp_info = (insn >> 5) & 7;
1418 int dest = (insn >> 16) & 0xf;
1419 int operand = insn & 0xf;
1421 if (env->cp[cp_num].cp_read)
1422 return env->cp[cp_num].cp_read(env->cp[cp_num].opaque,
1423 cp_info, dest, operand);
1427 /* Return basic MPU access permission bits. */
1428 static uint32_t simple_mpu_ap_bits(uint32_t val)
1435 for (i = 0; i < 16; i += 2) {
1436 ret |= (val >> i) & mask;
1442 /* Pad basic MPU access permission bits to extended format. */
1443 static uint32_t extended_mpu_ap_bits(uint32_t val)
1450 for (i = 0; i < 16; i += 2) {
1451 ret |= (val & mask) << i;
1457 void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
1463 op1 = (insn >> 21) & 7;
1464 op2 = (insn >> 5) & 7;
1466 switch ((insn >> 16) & 0xf) {
1469 if (arm_feature(env, ARM_FEATURE_XSCALE))
1471 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1473 if (arm_feature(env, ARM_FEATURE_V7)
1474 && op1 == 2 && crm == 0 && op2 == 0) {
1475 env->cp15.c0_cssel = val & 0xf;
1479 case 1: /* System configuration. */
1480 if (arm_feature(env, ARM_FEATURE_V7)
1481 && op1 == 0 && crm == 1 && op2 == 0) {
1482 env->cp15.c1_scr = val;
1485 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1489 if (!arm_feature(env, ARM_FEATURE_XSCALE) || crm == 0)
1490 env->cp15.c1_sys = val;
1491 /* ??? Lots of these bits are not implemented. */
1492 /* This may enable/disable the MMU, so do a TLB flush. */
1495 case 1: /* Auxiliary control register. */
1496 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
1497 env->cp15.c1_xscaleauxcr = val;
1500 /* Not implemented. */
1503 if (arm_feature(env, ARM_FEATURE_XSCALE))
1505 if (env->cp15.c1_coproc != val) {
1506 env->cp15.c1_coproc = val;
1507 /* ??? Is this safe when called from within a TB? */
1515 case 2: /* MMU Page table control / MPU cache control. */
1516 if (arm_feature(env, ARM_FEATURE_MPU)) {
1519 env->cp15.c2_data = val;
1522 env->cp15.c2_insn = val;
1530 env->cp15.c2_base0 = val;
1533 env->cp15.c2_base1 = val;
1537 env->cp15.c2_control = val;
1538 env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> val);
1539 env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> val);
1546 case 3: /* MMU Domain access control / MPU write buffer control. */
1548 tlb_flush(env, 1); /* Flush TLB as domain not tracked in TLB */
1550 case 4: /* Reserved. */
1552 case 5: /* MMU Fault status / MPU access permission. */
1553 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1557 if (arm_feature(env, ARM_FEATURE_MPU))
1558 val = extended_mpu_ap_bits(val);
1559 env->cp15.c5_data = val;
1562 if (arm_feature(env, ARM_FEATURE_MPU))
1563 val = extended_mpu_ap_bits(val);
1564 env->cp15.c5_insn = val;
1567 if (!arm_feature(env, ARM_FEATURE_MPU))
1569 env->cp15.c5_data = val;
1572 if (!arm_feature(env, ARM_FEATURE_MPU))
1574 env->cp15.c5_insn = val;
1580 case 6: /* MMU Fault address / MPU base/size. */
1581 if (arm_feature(env, ARM_FEATURE_MPU)) {
1584 env->cp15.c6_region[crm] = val;
1586 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1590 env->cp15.c6_data = val;
1592 case 1: /* ??? This is WFAR on armv6 */
1594 env->cp15.c6_insn = val;
1601 case 7: /* Cache control. */
1602 env->cp15.c15_i_max = 0x000;
1603 env->cp15.c15_i_min = 0xff0;
1607 /* No cache, so nothing to do except VA->PA translations. */
1608 if (arm_feature(env, ARM_FEATURE_VAPA)) {
1611 if (arm_feature(env, ARM_FEATURE_V7)) {
1612 env->cp15.c7_par = val & 0xfffff6ff;
1614 env->cp15.c7_par = val & 0xfffff1ff;
1619 target_ulong page_size;
1621 int ret, is_user = op2 & 2;
1622 int access_type = op2 & 1;
1625 /* Other states are only available with TrustZone */
1628 ret = get_phys_addr(env, val, access_type, is_user,
1629 &phys_addr, &prot, &page_size);
1631 /* We do not set any attribute bits in the PAR */
1632 if (page_size == (1 << 24)
1633 && arm_feature(env, ARM_FEATURE_V7)) {
1634 env->cp15.c7_par = (phys_addr & 0xff000000) | 1 << 1;
1636 env->cp15.c7_par = phys_addr & 0xfffff000;
1639 env->cp15.c7_par = ((ret & (10 << 1)) >> 5) |
1640 ((ret & (12 << 1)) >> 6) |
1641 ((ret & 0xf) << 1) | 1;
1648 case 8: /* MMU TLB control. */
1650 case 0: /* Invalidate all (TLBIALL) */
1653 case 1: /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */
1654 tlb_flush_page(env, val & TARGET_PAGE_MASK);
1656 case 2: /* Invalidate by ASID (TLBIASID) */
1657 tlb_flush(env, val == 0);
1659 case 3: /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */
1660 tlb_flush_page(env, val & TARGET_PAGE_MASK);
1667 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1669 if (arm_feature(env, ARM_FEATURE_STRONGARM))
1670 break; /* Ignore ReadBuffer access */
1672 case 0: /* Cache lockdown. */
1674 case 0: /* L1 cache. */
1677 env->cp15.c9_data = val;
1680 env->cp15.c9_insn = val;
1686 case 1: /* L2 cache. */
1687 /* Ignore writes to L2 lockdown/auxiliary registers. */
1693 case 1: /* TCM memory region registers. */
1694 /* Not implemented. */
1696 case 12: /* Performance monitor control */
1697 /* Performance monitors are implementation defined in v7,
1698 * but with an ARM recommended set of registers, which we
1699 * follow (although we don't actually implement any counters)
1701 if (!arm_feature(env, ARM_FEATURE_V7)) {
1705 case 0: /* performance monitor control register */
1706 /* only the DP, X, D and E bits are writable */
1707 env->cp15.c9_pmcr &= ~0x39;
1708 env->cp15.c9_pmcr |= (val & 0x39);
1710 case 1: /* Count enable set register */
1712 env->cp15.c9_pmcnten |= val;
1714 case 2: /* Count enable clear */
1716 env->cp15.c9_pmcnten &= ~val;
1718 case 3: /* Overflow flag status */
1719 env->cp15.c9_pmovsr &= ~val;
1721 case 4: /* Software increment */
1722 /* RAZ/WI since we don't implement the software-count event */
1724 case 5: /* Event counter selection register */
1725 /* Since we don't implement any events, writing to this register
1726 * is actually UNPREDICTABLE. So we choose to RAZ/WI.
1733 case 13: /* Performance counters */
1734 if (!arm_feature(env, ARM_FEATURE_V7)) {
1738 case 0: /* Cycle count register: not implemented, so RAZ/WI */
1740 case 1: /* Event type select */
1741 env->cp15.c9_pmxevtyper = val & 0xff;
1743 case 2: /* Event count register */
1744 /* Unimplemented (we have no events), RAZ/WI */
1750 case 14: /* Performance monitor control */
1751 if (!arm_feature(env, ARM_FEATURE_V7)) {
1755 case 0: /* user enable */
1756 env->cp15.c9_pmuserenr = val & 1;
1757 /* changes access rights for cp registers, so flush tbs */
1760 case 1: /* interrupt enable set */
1761 /* We have no event counters so only the C bit can be changed */
1763 env->cp15.c9_pminten |= val;
1765 case 2: /* interrupt enable clear */
1767 env->cp15.c9_pminten &= ~val;
1775 case 10: /* MMU TLB lockdown. */
1776 /* ??? TLB lockdown not implemented. */
1778 case 12: /* Reserved. */
1780 case 13: /* Process ID. */
1783 /* Unlike real hardware the qemu TLB uses virtual addresses,
1784 not modified virtual addresses, so this causes a TLB flush.
1786 if (env->cp15.c13_fcse != val)
1788 env->cp15.c13_fcse = val;
1791 /* This changes the ASID, so do a TLB flush. */
1792 if (env->cp15.c13_context != val
1793 && !arm_feature(env, ARM_FEATURE_MPU))
1795 env->cp15.c13_context = val;
1801 case 14: /* Generic timer */
1802 if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) {
1803 /* Dummy implementation: RAZ/WI for all */
1807 case 15: /* Implementation specific. */
1808 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
1809 if (op2 == 0 && crm == 1) {
1810 if (env->cp15.c15_cpar != (val & 0x3fff)) {
1811 /* Changes cp0 to cp13 behavior, so needs a TB flush. */
1813 env->cp15.c15_cpar = val & 0x3fff;
1819 if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
1823 case 1: /* Set TI925T configuration. */
1824 env->cp15.c15_ticonfig = val & 0xe7;
1825 env->cp15.c0_cpuid = (val & (1 << 5)) ? /* OS_TYPE bit */
1826 ARM_CPUID_TI915T : ARM_CPUID_TI925T;
1828 case 2: /* Set I_max. */
1829 env->cp15.c15_i_max = val;
1831 case 3: /* Set I_min. */
1832 env->cp15.c15_i_min = val;
1834 case 4: /* Set thread-ID. */
1835 env->cp15.c15_threadid = val & 0xffff;
1837 case 8: /* Wait-for-interrupt (deprecated). */
1838 cpu_interrupt(env, CPU_INTERRUPT_HALT);
1844 if (ARM_CPUID(env) == ARM_CPUID_CORTEXA9) {
1847 if ((op1 == 0) && (op2 == 0)) {
1848 env->cp15.c15_power_control = val;
1849 } else if ((op1 == 0) && (op2 == 1)) {
1850 env->cp15.c15_diagnostic = val;
1851 } else if ((op1 == 0) && (op2 == 2)) {
1852 env->cp15.c15_power_diagnostic = val;
1862 /* ??? For debugging only. Should raise illegal instruction exception. */
1863 cpu_abort(env, "Unimplemented cp15 register write (c%d, c%d, {%d, %d})\n",
1864 (insn >> 16) & 0xf, crm, op1, op2);
1867 uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
1873 op1 = (insn >> 21) & 7;
1874 op2 = (insn >> 5) & 7;
1876 switch ((insn >> 16) & 0xf) {
1877 case 0: /* ID codes. */
1883 case 0: /* Device ID. */
1884 return env->cp15.c0_cpuid;
1885 case 1: /* Cache Type. */
1886 return env->cp15.c0_cachetype;
1887 case 2: /* TCM status. */
1889 case 3: /* TLB type register. */
1890 return 0; /* No lockable TLB entries. */
1892 /* The MPIDR was standardised in v7; prior to
1893 * this it was implemented only in the 11MPCore.
1894 * For all other pre-v7 cores it does not exist.
1896 if (arm_feature(env, ARM_FEATURE_V7) ||
1897 ARM_CPUID(env) == ARM_CPUID_ARM11MPCORE) {
1898 int mpidr = env->cpu_index;
1899 /* We don't support setting cluster ID ([8..11])
1900 * so these bits always RAZ.
1902 if (arm_feature(env, ARM_FEATURE_V7MP)) {
1904 /* Cores which are uniprocessor (non-coherent)
1905 * but still implement the MP extensions set
1906 * bit 30. (For instance, A9UP.) However we do
1907 * not currently model any of those cores.
1912 /* otherwise fall through to the unimplemented-reg case */
1917 if (!arm_feature(env, ARM_FEATURE_V6))
1919 return env->cp15.c0_c1[op2];
1921 if (!arm_feature(env, ARM_FEATURE_V6))
1923 return env->cp15.c0_c2[op2];
1924 case 3: case 4: case 5: case 6: case 7:
1930 /* These registers aren't documented on arm11 cores. However
1931 Linux looks at them anyway. */
1932 if (!arm_feature(env, ARM_FEATURE_V6))
1936 if (!arm_feature(env, ARM_FEATURE_V7))
1941 return env->cp15.c0_ccsid[env->cp15.c0_cssel];
1943 return env->cp15.c0_clid;
1949 if (op2 != 0 || crm != 0)
1951 return env->cp15.c0_cssel;
1955 case 1: /* System configuration. */
1956 if (arm_feature(env, ARM_FEATURE_V7)
1957 && op1 == 0 && crm == 1 && op2 == 0) {
1958 return env->cp15.c1_scr;
1960 if (arm_feature(env, ARM_FEATURE_OMAPCP))
1963 case 0: /* Control register. */
1964 return env->cp15.c1_sys;
1965 case 1: /* Auxiliary control register. */
1966 if (arm_feature(env, ARM_FEATURE_XSCALE))
1967 return env->cp15.c1_xscaleauxcr;
1968 if (!arm_feature(env, ARM_FEATURE_AUXCR))
1970 switch (ARM_CPUID(env)) {
1971 case ARM_CPUID_ARM1026:
1973 case ARM_CPUID_ARM1136:
1974 case ARM_CPUID_ARM1136_R2:
1975 case ARM_CPUID_ARM1176:
1977 case ARM_CPUID_ARM11MPCORE:
1979 case ARM_CPUID_CORTEXA8:
1981 case ARM_CPUID_CORTEXA9:
1982 case ARM_CPUID_CORTEXA15:
1987 case 2: /* Coprocessor access register. */
1988 if (arm_feature(env, ARM_FEATURE_XSCALE))
1990 return env->cp15.c1_coproc;
1994 case 2: /* MMU Page table control / MPU cache control. */
1995 if (arm_feature(env, ARM_FEATURE_MPU)) {
1998 return env->cp15.c2_data;
2001 return env->cp15.c2_insn;
2009 return env->cp15.c2_base0;
2011 return env->cp15.c2_base1;
2013 return env->cp15.c2_control;
2018 case 3: /* MMU Domain access control / MPU write buffer control. */
2019 return env->cp15.c3;
2020 case 4: /* Reserved. */
2022 case 5: /* MMU Fault status / MPU access permission. */
2023 if (arm_feature(env, ARM_FEATURE_OMAPCP))
2027 if (arm_feature(env, ARM_FEATURE_MPU))
2028 return simple_mpu_ap_bits(env->cp15.c5_data);
2029 return env->cp15.c5_data;
2031 if (arm_feature(env, ARM_FEATURE_MPU))
2032 return simple_mpu_ap_bits(env->cp15.c5_insn);
2033 return env->cp15.c5_insn;
2035 if (!arm_feature(env, ARM_FEATURE_MPU))
2037 return env->cp15.c5_data;
2039 if (!arm_feature(env, ARM_FEATURE_MPU))
2041 return env->cp15.c5_insn;
2045 case 6: /* MMU Fault address. */
2046 if (arm_feature(env, ARM_FEATURE_MPU)) {
2049 return env->cp15.c6_region[crm];
2051 if (arm_feature(env, ARM_FEATURE_OMAPCP))
2055 return env->cp15.c6_data;
2057 if (arm_feature(env, ARM_FEATURE_V6)) {
2058 /* Watchpoint Fault Adrress. */
2059 return 0; /* Not implemented. */
2061 /* Instruction Fault Adrress. */
2062 /* Arm9 doesn't have an IFAR, but implementing it anyway
2063 shouldn't do any harm. */
2064 return env->cp15.c6_insn;
2067 if (arm_feature(env, ARM_FEATURE_V6)) {
2068 /* Instruction Fault Adrress. */
2069 return env->cp15.c6_insn;
2077 case 7: /* Cache control. */
2078 if (crm == 4 && op1 == 0 && op2 == 0) {
2079 return env->cp15.c7_par;
2081 /* FIXME: Should only clear Z flag if destination is r15. */
2084 case 8: /* MMU TLB control. */
2088 case 0: /* Cache lockdown */
2090 case 0: /* L1 cache. */
2091 if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
2096 return env->cp15.c9_data;
2098 return env->cp15.c9_insn;
2102 case 1: /* L2 cache */
2103 /* L2 Lockdown and Auxiliary control. */
2106 /* L2 cache lockdown (A8 only) */
2109 /* L2 cache auxiliary control (A8) or control (A15) */
2110 if (ARM_CPUID(env) == ARM_CPUID_CORTEXA15) {
2111 /* Linux wants the number of processors from here.
2112 * Might as well set the interrupt-controller bit too.
2114 return ((smp_cpus - 1) << 24) | (1 << 23);
2118 /* L2 cache extended control (A15) */
2127 case 12: /* Performance monitor control */
2128 if (!arm_feature(env, ARM_FEATURE_V7)) {
2132 case 0: /* performance monitor control register */
2133 return env->cp15.c9_pmcr;
2134 case 1: /* count enable set */
2135 case 2: /* count enable clear */
2136 return env->cp15.c9_pmcnten;
2137 case 3: /* overflow flag status */
2138 return env->cp15.c9_pmovsr;
2139 case 4: /* software increment */
2140 case 5: /* event counter selection register */
2141 return 0; /* Unimplemented, RAZ/WI */
2145 case 13: /* Performance counters */
2146 if (!arm_feature(env, ARM_FEATURE_V7)) {
2150 case 1: /* Event type select */
2151 return env->cp15.c9_pmxevtyper;
2152 case 0: /* Cycle count register */
2153 case 2: /* Event count register */
2154 /* Unimplemented, so RAZ/WI */
2159 case 14: /* Performance monitor control */
2160 if (!arm_feature(env, ARM_FEATURE_V7)) {
2164 case 0: /* user enable */
2165 return env->cp15.c9_pmuserenr;
2166 case 1: /* interrupt enable set */
2167 case 2: /* interrupt enable clear */
2168 return env->cp15.c9_pminten;
2176 case 10: /* MMU TLB lockdown. */
2177 /* ??? TLB lockdown not implemented. */
2179 case 11: /* TCM DMA control. */
2180 case 12: /* Reserved. */
2182 case 13: /* Process ID. */
2185 return env->cp15.c13_fcse;
2187 return env->cp15.c13_context;
2191 case 14: /* Generic timer */
2192 if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) {
2193 /* Dummy implementation: RAZ/WI for all */
2197 case 15: /* Implementation specific. */
2198 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
2199 if (op2 == 0 && crm == 1)
2200 return env->cp15.c15_cpar;
2204 if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
2208 case 1: /* Read TI925T configuration. */
2209 return env->cp15.c15_ticonfig;
2210 case 2: /* Read I_max. */
2211 return env->cp15.c15_i_max;
2212 case 3: /* Read I_min. */
2213 return env->cp15.c15_i_min;
2214 case 4: /* Read thread-ID. */
2215 return env->cp15.c15_threadid;
2216 case 8: /* TI925T_status */
2219 /* TODO: Peripheral port remap register:
2220 * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt
2221 * controller base address at $rn & ~0xfff and map size of
2222 * 0x200 << ($rn & 0xfff), when MMU is off. */
2225 if (ARM_CPUID(env) == ARM_CPUID_CORTEXA9) {
2228 if ((op1 == 4) && (op2 == 0)) {
2229 /* The config_base_address should hold the value of
2230 * the peripheral base. ARM should get this from a CPU
2231 * object property, but that support isn't available in
2232 * December 2011. Default to 0 for now and board models
2233 * that care can set it by a private hook */
2234 return env->cp15.c15_config_base_address;
2235 } else if ((op1 == 0) && (op2 == 0)) {
2236 /* power_control should be set to maximum latency. Again,
2237 default to 0 and set by private hook */
2238 return env->cp15.c15_power_control;
2239 } else if ((op1 == 0) && (op2 == 1)) {
2240 return env->cp15.c15_diagnostic;
2241 } else if ((op1 == 0) && (op2 == 2)) {
2242 return env->cp15.c15_power_diagnostic;
2245 case 1: /* NEON Busy */
2247 case 5: /* tlb lockdown */
2250 if ((op1 == 5) && (op2 == 2)) {
2262 /* ??? For debugging only. Should raise illegal instruction exception. */
2263 cpu_abort(env, "Unimplemented cp15 register read (c%d, c%d, {%d, %d})\n",
2264 (insn >> 16) & 0xf, crm, op1, op2);
2268 void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
2270 if ((env->uncached_cpsr & CPSR_M) == mode) {
2271 env->regs[13] = val;
2273 env->banked_r13[bank_number(env, mode)] = val;
2277 uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
2279 if ((env->uncached_cpsr & CPSR_M) == mode) {
2280 return env->regs[13];
2282 return env->banked_r13[bank_number(env, mode)];
2286 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
2290 return xpsr_read(env) & 0xf8000000;
2292 return xpsr_read(env) & 0xf80001ff;
2294 return xpsr_read(env) & 0xff00fc00;
2296 return xpsr_read(env) & 0xff00fdff;
2298 return xpsr_read(env) & 0x000001ff;
2300 return xpsr_read(env) & 0x0700fc00;
2302 return xpsr_read(env) & 0x0700edff;
2304 return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13];
2306 return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp;
2307 case 16: /* PRIMASK */
2308 return (env->uncached_cpsr & CPSR_I) != 0;
2309 case 17: /* BASEPRI */
2310 case 18: /* BASEPRI_MAX */
2311 return env->v7m.basepri;
2312 case 19: /* FAULTMASK */
2313 return (env->uncached_cpsr & CPSR_F) != 0;
2314 case 20: /* CONTROL */
2315 return env->v7m.control;
2317 /* ??? For debugging only. */
2318 cpu_abort(env, "Unimplemented system register read (%d)\n", reg);
2323 void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
2327 xpsr_write(env, val, 0xf8000000);
2330 xpsr_write(env, val, 0xf8000000);
2333 xpsr_write(env, val, 0xfe00fc00);
2336 xpsr_write(env, val, 0xfe00fc00);
2339 /* IPSR bits are readonly. */
2342 xpsr_write(env, val, 0x0600fc00);
2345 xpsr_write(env, val, 0x0600fc00);
2348 if (env->v7m.current_sp)
2349 env->v7m.other_sp = val;
2351 env->regs[13] = val;
2354 if (env->v7m.current_sp)
2355 env->regs[13] = val;
2357 env->v7m.other_sp = val;
2359 case 16: /* PRIMASK */
2361 env->uncached_cpsr |= CPSR_I;
2363 env->uncached_cpsr &= ~CPSR_I;
2365 case 17: /* BASEPRI */
2366 env->v7m.basepri = val & 0xff;
2368 case 18: /* BASEPRI_MAX */
2370 if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0))
2371 env->v7m.basepri = val;
2373 case 19: /* FAULTMASK */
2375 env->uncached_cpsr |= CPSR_F;
2377 env->uncached_cpsr &= ~CPSR_F;
2379 case 20: /* CONTROL */
2380 env->v7m.control = val & 3;
2381 switch_v7m_sp(env, (val & 2) != 0);
2384 /* ??? For debugging only. */
2385 cpu_abort(env, "Unimplemented system register write (%d)\n", reg);
2390 void cpu_arm_set_cp_io(CPUARMState *env, int cpnum,
2391 ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write,
2394 if (cpnum < 0 || cpnum > 14) {
2395 cpu_abort(env, "Bad coprocessor number: %i\n", cpnum);
2399 env->cp[cpnum].cp_read = cp_read;
2400 env->cp[cpnum].cp_write = cp_write;
2401 env->cp[cpnum].opaque = opaque;
2406 /* Note that signed overflow is undefined in C. The following routines are
2407 careful to use unsigned types where modulo arithmetic is required.
2408 Failure to do so _will_ break on newer gcc. */
2410 /* Signed saturating arithmetic. */
2412 /* Perform 16-bit signed saturating addition. */
2413 static inline uint16_t add16_sat(uint16_t a, uint16_t b)
2418 if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) {
2427 /* Perform 8-bit signed saturating addition. */
2428 static inline uint8_t add8_sat(uint8_t a, uint8_t b)
2433 if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) {
2442 /* Perform 16-bit signed saturating subtraction. */
2443 static inline uint16_t sub16_sat(uint16_t a, uint16_t b)
2448 if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) {
2457 /* Perform 8-bit signed saturating subtraction. */
2458 static inline uint8_t sub8_sat(uint8_t a, uint8_t b)
2463 if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) {
2472 #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16);
2473 #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16);
2474 #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8);
2475 #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8);
2478 #include "op_addsub.h"
2480 /* Unsigned saturating arithmetic. */
2481 static inline uint16_t add16_usat(uint16_t a, uint16_t b)
2490 static inline uint16_t sub16_usat(uint16_t a, uint16_t b)
2498 static inline uint8_t add8_usat(uint8_t a, uint8_t b)
2507 static inline uint8_t sub8_usat(uint8_t a, uint8_t b)
2515 #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16);
2516 #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16);
2517 #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8);
2518 #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8);
2521 #include "op_addsub.h"
2523 /* Signed modulo arithmetic. */
2524 #define SARITH16(a, b, n, op) do { \
2526 sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \
2527 RESULT(sum, n, 16); \
2529 ge |= 3 << (n * 2); \
2532 #define SARITH8(a, b, n, op) do { \
2534 sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \
2535 RESULT(sum, n, 8); \
2541 #define ADD16(a, b, n) SARITH16(a, b, n, +)
2542 #define SUB16(a, b, n) SARITH16(a, b, n, -)
2543 #define ADD8(a, b, n) SARITH8(a, b, n, +)
2544 #define SUB8(a, b, n) SARITH8(a, b, n, -)
2548 #include "op_addsub.h"
2550 /* Unsigned modulo arithmetic. */
2551 #define ADD16(a, b, n) do { \
2553 sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \
2554 RESULT(sum, n, 16); \
2555 if ((sum >> 16) == 1) \
2556 ge |= 3 << (n * 2); \
2559 #define ADD8(a, b, n) do { \
2561 sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \
2562 RESULT(sum, n, 8); \
2563 if ((sum >> 8) == 1) \
2567 #define SUB16(a, b, n) do { \
2569 sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \
2570 RESULT(sum, n, 16); \
2571 if ((sum >> 16) == 0) \
2572 ge |= 3 << (n * 2); \
2575 #define SUB8(a, b, n) do { \
2577 sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \
2578 RESULT(sum, n, 8); \
2579 if ((sum >> 8) == 0) \
2586 #include "op_addsub.h"
2588 /* Halved signed arithmetic. */
2589 #define ADD16(a, b, n) \
2590 RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16)
2591 #define SUB16(a, b, n) \
2592 RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16)
2593 #define ADD8(a, b, n) \
2594 RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8)
2595 #define SUB8(a, b, n) \
2596 RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8)
2599 #include "op_addsub.h"
2601 /* Halved unsigned arithmetic. */
2602 #define ADD16(a, b, n) \
2603 RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16)
2604 #define SUB16(a, b, n) \
2605 RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16)
2606 #define ADD8(a, b, n) \
2607 RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8)
2608 #define SUB8(a, b, n) \
2609 RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8)
2612 #include "op_addsub.h"
2614 static inline uint8_t do_usad(uint8_t a, uint8_t b)
2622 /* Unsigned sum of absolute byte differences. */
2623 uint32_t HELPER(usad8)(uint32_t a, uint32_t b)
2626 sum = do_usad(a, b);
2627 sum += do_usad(a >> 8, b >> 8);
2628 sum += do_usad(a >> 16, b >>16);
2629 sum += do_usad(a >> 24, b >> 24);
2633 /* For ARMv6 SEL instruction. */
2634 uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b)
2647 return (a & mask) | (b & ~mask);
2650 uint32_t HELPER(logicq_cc)(uint64_t val)
2652 return (val >> 32) | (val != 0);
2655 /* VFP support. We follow the convention used for VFP instrunctions:
2656 Single precition routines have a "s" suffix, double precision a
2659 /* Convert host exception flags to vfp form. */
2660 static inline int vfp_exceptbits_from_host(int host_bits)
2662 int target_bits = 0;
2664 if (host_bits & float_flag_invalid)
2666 if (host_bits & float_flag_divbyzero)
2668 if (host_bits & float_flag_overflow)
2670 if (host_bits & (float_flag_underflow | float_flag_output_denormal))
2672 if (host_bits & float_flag_inexact)
2673 target_bits |= 0x10;
2674 if (host_bits & float_flag_input_denormal)
2675 target_bits |= 0x80;
2679 uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env)
2684 fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff)
2685 | (env->vfp.vec_len << 16)
2686 | (env->vfp.vec_stride << 20);
2687 i = get_float_exception_flags(&env->vfp.fp_status);
2688 i |= get_float_exception_flags(&env->vfp.standard_fp_status);
2689 fpscr |= vfp_exceptbits_from_host(i);
2693 uint32_t vfp_get_fpscr(CPUARMState *env)
2695 return HELPER(vfp_get_fpscr)(env);
2698 /* Convert vfp exception flags to target form. */
2699 static inline int vfp_exceptbits_to_host(int target_bits)
2703 if (target_bits & 1)
2704 host_bits |= float_flag_invalid;
2705 if (target_bits & 2)
2706 host_bits |= float_flag_divbyzero;
2707 if (target_bits & 4)
2708 host_bits |= float_flag_overflow;
2709 if (target_bits & 8)
2710 host_bits |= float_flag_underflow;
2711 if (target_bits & 0x10)
2712 host_bits |= float_flag_inexact;
2713 if (target_bits & 0x80)
2714 host_bits |= float_flag_input_denormal;
2718 void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val)
2723 changed = env->vfp.xregs[ARM_VFP_FPSCR];
2724 env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff);
2725 env->vfp.vec_len = (val >> 16) & 7;
2726 env->vfp.vec_stride = (val >> 20) & 3;
2729 if (changed & (3 << 22)) {
2730 i = (val >> 22) & 3;
2733 i = float_round_nearest_even;
2739 i = float_round_down;
2742 i = float_round_to_zero;
2745 set_float_rounding_mode(i, &env->vfp.fp_status);
2747 if (changed & (1 << 24)) {
2748 set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
2749 set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
2751 if (changed & (1 << 25))
2752 set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status);
2754 i = vfp_exceptbits_to_host(val);
2755 set_float_exception_flags(i, &env->vfp.fp_status);
2756 set_float_exception_flags(0, &env->vfp.standard_fp_status);
2759 void vfp_set_fpscr(CPUARMState *env, uint32_t val)
2761 HELPER(vfp_set_fpscr)(env, val);
2764 #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p))
2766 #define VFP_BINOP(name) \
2767 float32 VFP_HELPER(name, s)(float32 a, float32 b, void *fpstp) \
2769 float_status *fpst = fpstp; \
2770 return float32_ ## name(a, b, fpst); \
2772 float64 VFP_HELPER(name, d)(float64 a, float64 b, void *fpstp) \
2774 float_status *fpst = fpstp; \
2775 return float64_ ## name(a, b, fpst); \
2783 float32 VFP_HELPER(neg, s)(float32 a)
2785 return float32_chs(a);
2788 float64 VFP_HELPER(neg, d)(float64 a)
2790 return float64_chs(a);
2793 float32 VFP_HELPER(abs, s)(float32 a)
2795 return float32_abs(a);
2798 float64 VFP_HELPER(abs, d)(float64 a)
2800 return float64_abs(a);
2803 float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env)
2805 return float32_sqrt(a, &env->vfp.fp_status);
2808 float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env)
2810 return float64_sqrt(a, &env->vfp.fp_status);
2813 /* XXX: check quiet/signaling case */
2814 #define DO_VFP_cmp(p, type) \
2815 void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \
2818 switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \
2819 case 0: flags = 0x6; break; \
2820 case -1: flags = 0x8; break; \
2821 case 1: flags = 0x2; break; \
2822 default: case 2: flags = 0x3; break; \
2824 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
2825 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
2827 void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \
2830 switch(type ## _compare(a, b, &env->vfp.fp_status)) { \
2831 case 0: flags = 0x6; break; \
2832 case -1: flags = 0x8; break; \
2833 case 1: flags = 0x2; break; \
2834 default: case 2: flags = 0x3; break; \
2836 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
2837 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
2839 DO_VFP_cmp(s, float32)
2840 DO_VFP_cmp(d, float64)
2843 /* Integer to float and float to integer conversions */
2845 #define CONV_ITOF(name, fsz, sign) \
2846 float##fsz HELPER(name)(uint32_t x, void *fpstp) \
2848 float_status *fpst = fpstp; \
2849 return sign##int32_to_##float##fsz((sign##int32_t)x, fpst); \
2852 #define CONV_FTOI(name, fsz, sign, round) \
2853 uint32_t HELPER(name)(float##fsz x, void *fpstp) \
2855 float_status *fpst = fpstp; \
2856 if (float##fsz##_is_any_nan(x)) { \
2857 float_raise(float_flag_invalid, fpst); \
2860 return float##fsz##_to_##sign##int32##round(x, fpst); \
2863 #define FLOAT_CONVS(name, p, fsz, sign) \
2864 CONV_ITOF(vfp_##name##to##p, fsz, sign) \
2865 CONV_FTOI(vfp_to##name##p, fsz, sign, ) \
2866 CONV_FTOI(vfp_to##name##z##p, fsz, sign, _round_to_zero)
2868 FLOAT_CONVS(si, s, 32, )
2869 FLOAT_CONVS(si, d, 64, )
2870 FLOAT_CONVS(ui, s, 32, u)
2871 FLOAT_CONVS(ui, d, 64, u)
2877 /* floating point conversion */
2878 float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
2880 float64 r = float32_to_float64(x, &env->vfp.fp_status);
2881 /* ARM requires that S<->D conversion of any kind of NaN generates
2882 * a quiet NaN by forcing the most significant frac bit to 1.
2884 return float64_maybe_silence_nan(r);
2887 float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
2889 float32 r = float64_to_float32(x, &env->vfp.fp_status);
2890 /* ARM requires that S<->D conversion of any kind of NaN generates
2891 * a quiet NaN by forcing the most significant frac bit to 1.
2893 return float32_maybe_silence_nan(r);
2896 /* VFP3 fixed point conversion. */
2897 #define VFP_CONV_FIX(name, p, fsz, itype, sign) \
2898 float##fsz HELPER(vfp_##name##to##p)(uint##fsz##_t x, uint32_t shift, \
2901 float_status *fpst = fpstp; \
2903 tmp = sign##int32_to_##float##fsz((itype##_t)x, fpst); \
2904 return float##fsz##_scalbn(tmp, -(int)shift, fpst); \
2906 uint##fsz##_t HELPER(vfp_to##name##p)(float##fsz x, uint32_t shift, \
2909 float_status *fpst = fpstp; \
2911 if (float##fsz##_is_any_nan(x)) { \
2912 float_raise(float_flag_invalid, fpst); \
2915 tmp = float##fsz##_scalbn(x, shift, fpst); \
2916 return float##fsz##_to_##itype##_round_to_zero(tmp, fpst); \
2919 VFP_CONV_FIX(sh, d, 64, int16, )
2920 VFP_CONV_FIX(sl, d, 64, int32, )
2921 VFP_CONV_FIX(uh, d, 64, uint16, u)
2922 VFP_CONV_FIX(ul, d, 64, uint32, u)
2923 VFP_CONV_FIX(sh, s, 32, int16, )
2924 VFP_CONV_FIX(sl, s, 32, int32, )
2925 VFP_CONV_FIX(uh, s, 32, uint16, u)
2926 VFP_CONV_FIX(ul, s, 32, uint32, u)
2929 /* Half precision conversions. */
2930 static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s)
2932 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
2933 float32 r = float16_to_float32(make_float16(a), ieee, s);
2935 return float32_maybe_silence_nan(r);
2940 static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s)
2942 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
2943 float16 r = float32_to_float16(a, ieee, s);
2945 r = float16_maybe_silence_nan(r);
2947 return float16_val(r);
2950 float32 HELPER(neon_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
2952 return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status);
2955 uint32_t HELPER(neon_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
2957 return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status);
2960 float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
2962 return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status);
2965 uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
2967 return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status);
2970 #define float32_two make_float32(0x40000000)
2971 #define float32_three make_float32(0x40400000)
2972 #define float32_one_point_five make_float32(0x3fc00000)
2974 float32 HELPER(recps_f32)(float32 a, float32 b, CPUARMState *env)
2976 float_status *s = &env->vfp.standard_fp_status;
2977 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
2978 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
2979 if (!(float32_is_zero(a) || float32_is_zero(b))) {
2980 float_raise(float_flag_input_denormal, s);
2984 return float32_sub(float32_two, float32_mul(a, b, s), s);
2987 float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUARMState *env)
2989 float_status *s = &env->vfp.standard_fp_status;
2991 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
2992 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
2993 if (!(float32_is_zero(a) || float32_is_zero(b))) {
2994 float_raise(float_flag_input_denormal, s);
2996 return float32_one_point_five;
2998 product = float32_mul(a, b, s);
2999 return float32_div(float32_sub(float32_three, product, s), float32_two, s);
3004 /* Constants 256 and 512 are used in some helpers; we avoid relying on
3005 * int->float conversions at run-time. */
3006 #define float64_256 make_float64(0x4070000000000000LL)
3007 #define float64_512 make_float64(0x4080000000000000LL)
3009 /* The algorithm that must be used to calculate the estimate
3010 * is specified by the ARM ARM.
3012 static float64 recip_estimate(float64 a, CPUARMState *env)
3014 /* These calculations mustn't set any fp exception flags,
3015 * so we use a local copy of the fp_status.
3017 float_status dummy_status = env->vfp.standard_fp_status;
3018 float_status *s = &dummy_status;
3019 /* q = (int)(a * 512.0) */
3020 float64 q = float64_mul(float64_512, a, s);
3021 int64_t q_int = float64_to_int64_round_to_zero(q, s);
3023 /* r = 1.0 / (((double)q + 0.5) / 512.0) */
3024 q = int64_to_float64(q_int, s);
3025 q = float64_add(q, float64_half, s);
3026 q = float64_div(q, float64_512, s);
3027 q = float64_div(float64_one, q, s);
3029 /* s = (int)(256.0 * r + 0.5) */
3030 q = float64_mul(q, float64_256, s);
3031 q = float64_add(q, float64_half, s);
3032 q_int = float64_to_int64_round_to_zero(q, s);
3034 /* return (double)s / 256.0 */
3035 return float64_div(int64_to_float64(q_int, s), float64_256, s);
3038 float32 HELPER(recpe_f32)(float32 a, CPUARMState *env)
3040 float_status *s = &env->vfp.standard_fp_status;
3042 uint32_t val32 = float32_val(a);
3045 int a_exp = (val32 & 0x7f800000) >> 23;
3046 int sign = val32 & 0x80000000;
3048 if (float32_is_any_nan(a)) {
3049 if (float32_is_signaling_nan(a)) {
3050 float_raise(float_flag_invalid, s);
3052 return float32_default_nan;
3053 } else if (float32_is_infinity(a)) {
3054 return float32_set_sign(float32_zero, float32_is_neg(a));
3055 } else if (float32_is_zero_or_denormal(a)) {
3056 if (!float32_is_zero(a)) {
3057 float_raise(float_flag_input_denormal, s);
3059 float_raise(float_flag_divbyzero, s);
3060 return float32_set_sign(float32_infinity, float32_is_neg(a));
3061 } else if (a_exp >= 253) {
3062 float_raise(float_flag_underflow, s);
3063 return float32_set_sign(float32_zero, float32_is_neg(a));
3066 f64 = make_float64((0x3feULL << 52)
3067 | ((int64_t)(val32 & 0x7fffff) << 29));
3069 result_exp = 253 - a_exp;
3071 f64 = recip_estimate(f64, env);
3074 | ((result_exp & 0xff) << 23)
3075 | ((float64_val(f64) >> 29) & 0x7fffff);
3076 return make_float32(val32);
3079 /* The algorithm that must be used to calculate the estimate
3080 * is specified by the ARM ARM.
3082 static float64 recip_sqrt_estimate(float64 a, CPUARMState *env)
3084 /* These calculations mustn't set any fp exception flags,
3085 * so we use a local copy of the fp_status.
3087 float_status dummy_status = env->vfp.standard_fp_status;
3088 float_status *s = &dummy_status;
3092 if (float64_lt(a, float64_half, s)) {
3093 /* range 0.25 <= a < 0.5 */
3095 /* a in units of 1/512 rounded down */
3096 /* q0 = (int)(a * 512.0); */
3097 q = float64_mul(float64_512, a, s);
3098 q_int = float64_to_int64_round_to_zero(q, s);
3100 /* reciprocal root r */
3101 /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */
3102 q = int64_to_float64(q_int, s);
3103 q = float64_add(q, float64_half, s);
3104 q = float64_div(q, float64_512, s);
3105 q = float64_sqrt(q, s);
3106 q = float64_div(float64_one, q, s);
3108 /* range 0.5 <= a < 1.0 */
3110 /* a in units of 1/256 rounded down */
3111 /* q1 = (int)(a * 256.0); */
3112 q = float64_mul(float64_256, a, s);
3113 int64_t q_int = float64_to_int64_round_to_zero(q, s);
3115 /* reciprocal root r */
3116 /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */
3117 q = int64_to_float64(q_int, s);
3118 q = float64_add(q, float64_half, s);
3119 q = float64_div(q, float64_256, s);
3120 q = float64_sqrt(q, s);
3121 q = float64_div(float64_one, q, s);
3123 /* r in units of 1/256 rounded to nearest */
3124 /* s = (int)(256.0 * r + 0.5); */
3126 q = float64_mul(q, float64_256,s );
3127 q = float64_add(q, float64_half, s);
3128 q_int = float64_to_int64_round_to_zero(q, s);
3130 /* return (double)s / 256.0;*/
3131 return float64_div(int64_to_float64(q_int, s), float64_256, s);
3134 float32 HELPER(rsqrte_f32)(float32 a, CPUARMState *env)
3136 float_status *s = &env->vfp.standard_fp_status;
3142 val = float32_val(a);
3144 if (float32_is_any_nan(a)) {
3145 if (float32_is_signaling_nan(a)) {
3146 float_raise(float_flag_invalid, s);
3148 return float32_default_nan;
3149 } else if (float32_is_zero_or_denormal(a)) {
3150 if (!float32_is_zero(a)) {
3151 float_raise(float_flag_input_denormal, s);
3153 float_raise(float_flag_divbyzero, s);
3154 return float32_set_sign(float32_infinity, float32_is_neg(a));
3155 } else if (float32_is_neg(a)) {
3156 float_raise(float_flag_invalid, s);
3157 return float32_default_nan;
3158 } else if (float32_is_infinity(a)) {
3159 return float32_zero;
3162 /* Normalize to a double-precision value between 0.25 and 1.0,
3163 * preserving the parity of the exponent. */
3164 if ((val & 0x800000) == 0) {
3165 f64 = make_float64(((uint64_t)(val & 0x80000000) << 32)
3167 | ((uint64_t)(val & 0x7fffff) << 29));
3169 f64 = make_float64(((uint64_t)(val & 0x80000000) << 32)
3171 | ((uint64_t)(val & 0x7fffff) << 29));
3174 result_exp = (380 - ((val & 0x7f800000) >> 23)) / 2;
3176 f64 = recip_sqrt_estimate(f64, env);
3178 val64 = float64_val(f64);
3180 val = ((result_exp & 0xff) << 23)
3181 | ((val64 >> 29) & 0x7fffff);
3182 return make_float32(val);
3185 uint32_t HELPER(recpe_u32)(uint32_t a, CPUARMState *env)
3189 if ((a & 0x80000000) == 0) {
3193 f64 = make_float64((0x3feULL << 52)
3194 | ((int64_t)(a & 0x7fffffff) << 21));
3196 f64 = recip_estimate (f64, env);
3198 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
3201 uint32_t HELPER(rsqrte_u32)(uint32_t a, CPUARMState *env)
3205 if ((a & 0xc0000000) == 0) {
3209 if (a & 0x80000000) {
3210 f64 = make_float64((0x3feULL << 52)
3211 | ((uint64_t)(a & 0x7fffffff) << 21));
3212 } else { /* bits 31-30 == '01' */
3213 f64 = make_float64((0x3fdULL << 52)
3214 | ((uint64_t)(a & 0x3fffffff) << 22));
3217 f64 = recip_sqrt_estimate(f64, env);
3219 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
3222 /* VFPv4 fused multiply-accumulate */
3223 float32 VFP_HELPER(muladd, s)(float32 a, float32 b, float32 c, void *fpstp)
3225 float_status *fpst = fpstp;
3226 return float32_muladd(a, b, c, 0, fpst);
3229 float64 VFP_HELPER(muladd, d)(float64 a, float64 b, float64 c, void *fpstp)
3231 float_status *fpst = fpstp;
3232 return float64_muladd(a, b, c, 0, fpst);
3235 void HELPER(set_teecr)(CPUARMState *env, uint32_t val)
3238 if (env->teecr != val) {