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Commit | Line | Data |
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b5ff1b31 FB |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <string.h> | |
4 | ||
5 | #include "cpu.h" | |
6 | #include "exec-all.h" | |
9ee6e8bb | 7 | #include "gdbstub.h" |
b26eefb6 | 8 | #include "helpers.h" |
ca10f867 | 9 | #include "qemu-common.h" |
7bbcb0af | 10 | #include "host-utils.h" |
4f78c9ad | 11 | #if !defined(CONFIG_USER_ONLY) |
983fe826 | 12 | #include "hw/loader.h" |
4f78c9ad | 13 | #endif |
9ee6e8bb | 14 | |
10055562 PB |
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 }; | |
20 | ||
9ee6e8bb PB |
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 | ||
27 | static uint32_t mpcore_cp15_c0_c1[8] = | |
28 | { 0x111, 0x1, 0, 0x2, 0x01100103, 0x10020302, 0x01222000, 0 }; | |
29 | ||
30 | static uint32_t mpcore_cp15_c0_c2[8] = | |
31 | { 0x00100011, 0x12002111, 0x11221011, 0x01102131, 0x141, 0, 0, 0 }; | |
32 | ||
33 | static uint32_t arm1136_cp15_c0_c1[8] = | |
34 | { 0x111, 0x1, 0x2, 0x3, 0x01130003, 0x10030302, 0x01222110, 0 }; | |
35 | ||
36 | static uint32_t arm1136_cp15_c0_c2[8] = | |
37 | { 0x00140011, 0x12002111, 0x11231111, 0x01102131, 0x141, 0, 0, 0 }; | |
b5ff1b31 | 38 | |
aaed909a FB |
39 | static uint32_t cpu_arm_find_by_name(const char *name); |
40 | ||
f3d6b95e PB |
41 | static inline void set_feature(CPUARMState *env, int feature) |
42 | { | |
43 | env->features |= 1u << feature; | |
44 | } | |
45 | ||
46 | static void cpu_reset_model_id(CPUARMState *env, uint32_t id) | |
47 | { | |
48 | env->cp15.c0_cpuid = id; | |
49 | switch (id) { | |
50 | case ARM_CPUID_ARM926: | |
51 | set_feature(env, ARM_FEATURE_VFP); | |
52 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41011090; | |
c1713132 | 53 | env->cp15.c0_cachetype = 0x1dd20d2; |
610c3c8a | 54 | env->cp15.c1_sys = 0x00090078; |
f3d6b95e | 55 | break; |
ce819861 PB |
56 | case ARM_CPUID_ARM946: |
57 | set_feature(env, ARM_FEATURE_MPU); | |
58 | env->cp15.c0_cachetype = 0x0f004006; | |
610c3c8a | 59 | env->cp15.c1_sys = 0x00000078; |
ce819861 | 60 | break; |
f3d6b95e PB |
61 | case ARM_CPUID_ARM1026: |
62 | set_feature(env, ARM_FEATURE_VFP); | |
63 | set_feature(env, ARM_FEATURE_AUXCR); | |
64 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410110a0; | |
c1713132 | 65 | env->cp15.c0_cachetype = 0x1dd20d2; |
610c3c8a | 66 | env->cp15.c1_sys = 0x00090078; |
c1713132 | 67 | break; |
827df9f3 | 68 | case ARM_CPUID_ARM1136_R2: |
9ee6e8bb PB |
69 | case ARM_CPUID_ARM1136: |
70 | set_feature(env, ARM_FEATURE_V6); | |
71 | set_feature(env, ARM_FEATURE_VFP); | |
72 | set_feature(env, ARM_FEATURE_AUXCR); | |
73 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; | |
74 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; | |
75 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; | |
76 | memcpy(env->cp15.c0_c1, arm1136_cp15_c0_c1, 8 * sizeof(uint32_t)); | |
22478e79 | 77 | memcpy(env->cp15.c0_c2, arm1136_cp15_c0_c2, 8 * sizeof(uint32_t)); |
9ee6e8bb PB |
78 | env->cp15.c0_cachetype = 0x1dd20d2; |
79 | break; | |
80 | case ARM_CPUID_ARM11MPCORE: | |
81 | set_feature(env, ARM_FEATURE_V6); | |
82 | set_feature(env, ARM_FEATURE_V6K); | |
83 | set_feature(env, ARM_FEATURE_VFP); | |
84 | set_feature(env, ARM_FEATURE_AUXCR); | |
85 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410120b4; | |
86 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11111111; | |
87 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00000000; | |
88 | memcpy(env->cp15.c0_c1, mpcore_cp15_c0_c1, 8 * sizeof(uint32_t)); | |
22478e79 | 89 | memcpy(env->cp15.c0_c2, mpcore_cp15_c0_c2, 8 * sizeof(uint32_t)); |
9ee6e8bb PB |
90 | env->cp15.c0_cachetype = 0x1dd20d2; |
91 | break; | |
92 | case ARM_CPUID_CORTEXA8: | |
93 | set_feature(env, ARM_FEATURE_V6); | |
94 | set_feature(env, ARM_FEATURE_V6K); | |
95 | set_feature(env, ARM_FEATURE_V7); | |
96 | set_feature(env, ARM_FEATURE_AUXCR); | |
97 | set_feature(env, ARM_FEATURE_THUMB2); | |
98 | set_feature(env, ARM_FEATURE_VFP); | |
99 | set_feature(env, ARM_FEATURE_VFP3); | |
100 | set_feature(env, ARM_FEATURE_NEON); | |
fe1479c3 | 101 | set_feature(env, ARM_FEATURE_THUMB2EE); |
9ee6e8bb PB |
102 | env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c0; |
103 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; | |
104 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100; | |
105 | memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t)); | |
22478e79 | 106 | memcpy(env->cp15.c0_c2, cortexa8_cp15_c0_c2, 8 * sizeof(uint32_t)); |
a49ea279 PB |
107 | env->cp15.c0_cachetype = 0x82048004; |
108 | env->cp15.c0_clid = (1 << 27) | (2 << 24) | 3; | |
109 | env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */ | |
110 | env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */ | |
111 | env->cp15.c0_ccsid[2] = 0xf0000000; /* No L2 icache. */ | |
9c486ad6 | 112 | env->cp15.c1_sys = 0x00c50078; |
9ee6e8bb | 113 | break; |
10055562 PB |
114 | case ARM_CPUID_CORTEXA9: |
115 | set_feature(env, ARM_FEATURE_V6); | |
116 | set_feature(env, ARM_FEATURE_V6K); | |
117 | set_feature(env, ARM_FEATURE_V7); | |
118 | set_feature(env, ARM_FEATURE_AUXCR); | |
119 | set_feature(env, ARM_FEATURE_THUMB2); | |
120 | set_feature(env, ARM_FEATURE_VFP); | |
121 | set_feature(env, ARM_FEATURE_VFP3); | |
122 | set_feature(env, ARM_FEATURE_VFP_FP16); | |
123 | set_feature(env, ARM_FEATURE_NEON); | |
124 | set_feature(env, ARM_FEATURE_THUMB2EE); | |
125 | env->vfp.xregs[ARM_VFP_FPSID] = 0x41034000; /* Guess */ | |
126 | env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; | |
127 | env->vfp.xregs[ARM_VFP_MVFR1] = 0x01111111; | |
128 | memcpy(env->cp15.c0_c1, cortexa9_cp15_c0_c1, 8 * sizeof(uint32_t)); | |
129 | memcpy(env->cp15.c0_c2, cortexa9_cp15_c0_c2, 8 * sizeof(uint32_t)); | |
130 | env->cp15.c0_cachetype = 0x80038003; | |
131 | env->cp15.c0_clid = (1 << 27) | (1 << 24) | 3; | |
132 | env->cp15.c0_ccsid[0] = 0xe00fe015; /* 16k L1 dcache. */ | |
133 | env->cp15.c0_ccsid[1] = 0x200fe015; /* 16k L1 icache. */ | |
134 | break; | |
9ee6e8bb PB |
135 | case ARM_CPUID_CORTEXM3: |
136 | set_feature(env, ARM_FEATURE_V6); | |
137 | set_feature(env, ARM_FEATURE_THUMB2); | |
138 | set_feature(env, ARM_FEATURE_V7); | |
139 | set_feature(env, ARM_FEATURE_M); | |
140 | set_feature(env, ARM_FEATURE_DIV); | |
141 | break; | |
142 | case ARM_CPUID_ANY: /* For userspace emulation. */ | |
143 | set_feature(env, ARM_FEATURE_V6); | |
144 | set_feature(env, ARM_FEATURE_V6K); | |
145 | set_feature(env, ARM_FEATURE_V7); | |
146 | set_feature(env, ARM_FEATURE_THUMB2); | |
147 | set_feature(env, ARM_FEATURE_VFP); | |
148 | set_feature(env, ARM_FEATURE_VFP3); | |
60011498 | 149 | set_feature(env, ARM_FEATURE_VFP_FP16); |
9ee6e8bb | 150 | set_feature(env, ARM_FEATURE_NEON); |
fe1479c3 | 151 | set_feature(env, ARM_FEATURE_THUMB2EE); |
9ee6e8bb PB |
152 | set_feature(env, ARM_FEATURE_DIV); |
153 | break; | |
c3d2689d AZ |
154 | case ARM_CPUID_TI915T: |
155 | case ARM_CPUID_TI925T: | |
156 | set_feature(env, ARM_FEATURE_OMAPCP); | |
157 | env->cp15.c0_cpuid = ARM_CPUID_TI925T; /* Depends on wiring. */ | |
158 | env->cp15.c0_cachetype = 0x5109149; | |
159 | env->cp15.c1_sys = 0x00000070; | |
160 | env->cp15.c15_i_max = 0x000; | |
161 | env->cp15.c15_i_min = 0xff0; | |
162 | break; | |
c1713132 AZ |
163 | case ARM_CPUID_PXA250: |
164 | case ARM_CPUID_PXA255: | |
165 | case ARM_CPUID_PXA260: | |
166 | case ARM_CPUID_PXA261: | |
167 | case ARM_CPUID_PXA262: | |
168 | set_feature(env, ARM_FEATURE_XSCALE); | |
169 | /* JTAG_ID is ((id << 28) | 0x09265013) */ | |
170 | env->cp15.c0_cachetype = 0xd172172; | |
610c3c8a | 171 | env->cp15.c1_sys = 0x00000078; |
c1713132 AZ |
172 | break; |
173 | case ARM_CPUID_PXA270_A0: | |
174 | case ARM_CPUID_PXA270_A1: | |
175 | case ARM_CPUID_PXA270_B0: | |
176 | case ARM_CPUID_PXA270_B1: | |
177 | case ARM_CPUID_PXA270_C0: | |
178 | case ARM_CPUID_PXA270_C5: | |
179 | set_feature(env, ARM_FEATURE_XSCALE); | |
180 | /* JTAG_ID is ((id << 28) | 0x09265013) */ | |
18c9b560 AZ |
181 | set_feature(env, ARM_FEATURE_IWMMXT); |
182 | env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q'; | |
c1713132 | 183 | env->cp15.c0_cachetype = 0xd172172; |
610c3c8a | 184 | env->cp15.c1_sys = 0x00000078; |
f3d6b95e PB |
185 | break; |
186 | default: | |
187 | cpu_abort(env, "Bad CPU ID: %x\n", id); | |
188 | break; | |
189 | } | |
190 | } | |
191 | ||
40f137e1 PB |
192 | void cpu_reset(CPUARMState *env) |
193 | { | |
f3d6b95e | 194 | uint32_t id; |
eca1bdf4 AL |
195 | |
196 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { | |
197 | qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); | |
198 | log_cpu_state(env, 0); | |
199 | } | |
200 | ||
f3d6b95e PB |
201 | id = env->cp15.c0_cpuid; |
202 | memset(env, 0, offsetof(CPUARMState, breakpoints)); | |
203 | if (id) | |
204 | cpu_reset_model_id(env, id); | |
40f137e1 PB |
205 | #if defined (CONFIG_USER_ONLY) |
206 | env->uncached_cpsr = ARM_CPU_MODE_USR; | |
3a807dec | 207 | /* For user mode we must enable access to coprocessors */ |
40f137e1 | 208 | env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30; |
3a807dec PM |
209 | if (arm_feature(env, ARM_FEATURE_IWMMXT)) { |
210 | env->cp15.c15_cpar = 3; | |
211 | } else if (arm_feature(env, ARM_FEATURE_XSCALE)) { | |
212 | env->cp15.c15_cpar = 1; | |
213 | } | |
40f137e1 PB |
214 | #else |
215 | /* SVC mode with interrupts disabled. */ | |
216 | env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I; | |
9ee6e8bb | 217 | /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is |
983fe826 PB |
218 | clear at reset. Initial SP and PC are loaded from ROM. */ |
219 | if (IS_M(env)) { | |
220 | uint32_t pc; | |
221 | uint8_t *rom; | |
9ee6e8bb | 222 | env->uncached_cpsr &= ~CPSR_I; |
983fe826 PB |
223 | rom = rom_ptr(0); |
224 | if (rom) { | |
225 | /* We should really use ldl_phys here, in case the guest | |
226 | modified flash and reset itself. However images | |
227 | loaded via -kenrel have not been copied yet, so load the | |
228 | values directly from there. */ | |
229 | env->regs[13] = ldl_p(rom); | |
230 | pc = ldl_p(rom + 4); | |
231 | env->thumb = pc & 1; | |
232 | env->regs[15] = pc & ~1; | |
233 | } | |
234 | } | |
40f137e1 | 235 | env->vfp.xregs[ARM_VFP_FPEXC] = 0; |
b2fa1797 | 236 | env->cp15.c2_base_mask = 0xffffc000u; |
40f137e1 | 237 | #endif |
f3d6b95e | 238 | tlb_flush(env, 1); |
40f137e1 PB |
239 | } |
240 | ||
56aebc89 PB |
241 | static int vfp_gdb_get_reg(CPUState *env, uint8_t *buf, int reg) |
242 | { | |
243 | int nregs; | |
244 | ||
245 | /* VFP data registers are always little-endian. */ | |
246 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; | |
247 | if (reg < nregs) { | |
248 | stfq_le_p(buf, env->vfp.regs[reg]); | |
249 | return 8; | |
250 | } | |
251 | if (arm_feature(env, ARM_FEATURE_NEON)) { | |
252 | /* Aliases for Q regs. */ | |
253 | nregs += 16; | |
254 | if (reg < nregs) { | |
255 | stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]); | |
256 | stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]); | |
257 | return 16; | |
258 | } | |
259 | } | |
260 | switch (reg - nregs) { | |
261 | case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4; | |
262 | case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4; | |
263 | case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4; | |
264 | } | |
265 | return 0; | |
266 | } | |
267 | ||
268 | static int vfp_gdb_set_reg(CPUState *env, uint8_t *buf, int reg) | |
269 | { | |
270 | int nregs; | |
271 | ||
272 | nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; | |
273 | if (reg < nregs) { | |
274 | env->vfp.regs[reg] = ldfq_le_p(buf); | |
275 | return 8; | |
276 | } | |
277 | if (arm_feature(env, ARM_FEATURE_NEON)) { | |
278 | nregs += 16; | |
279 | if (reg < nregs) { | |
280 | env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf); | |
281 | env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8); | |
282 | return 16; | |
283 | } | |
284 | } | |
285 | switch (reg - nregs) { | |
286 | case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4; | |
287 | case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4; | |
71b3c3de | 288 | case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4; |
56aebc89 PB |
289 | } |
290 | return 0; | |
291 | } | |
292 | ||
aaed909a | 293 | CPUARMState *cpu_arm_init(const char *cpu_model) |
40f137e1 PB |
294 | { |
295 | CPUARMState *env; | |
aaed909a | 296 | uint32_t id; |
b26eefb6 | 297 | static int inited = 0; |
40f137e1 | 298 | |
aaed909a FB |
299 | id = cpu_arm_find_by_name(cpu_model); |
300 | if (id == 0) | |
301 | return NULL; | |
40f137e1 | 302 | env = qemu_mallocz(sizeof(CPUARMState)); |
40f137e1 | 303 | cpu_exec_init(env); |
b26eefb6 PB |
304 | if (!inited) { |
305 | inited = 1; | |
306 | arm_translate_init(); | |
307 | } | |
308 | ||
01ba9816 | 309 | env->cpu_model_str = cpu_model; |
aaed909a | 310 | env->cp15.c0_cpuid = id; |
40f137e1 | 311 | cpu_reset(env); |
56aebc89 PB |
312 | if (arm_feature(env, ARM_FEATURE_NEON)) { |
313 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, | |
314 | 51, "arm-neon.xml", 0); | |
315 | } else if (arm_feature(env, ARM_FEATURE_VFP3)) { | |
316 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, | |
317 | 35, "arm-vfp3.xml", 0); | |
318 | } else if (arm_feature(env, ARM_FEATURE_VFP)) { | |
319 | gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg, | |
320 | 19, "arm-vfp.xml", 0); | |
321 | } | |
0bf46a40 | 322 | qemu_init_vcpu(env); |
40f137e1 PB |
323 | return env; |
324 | } | |
325 | ||
3371d272 PB |
326 | struct arm_cpu_t { |
327 | uint32_t id; | |
328 | const char *name; | |
329 | }; | |
330 | ||
331 | static const struct arm_cpu_t arm_cpu_names[] = { | |
332 | { ARM_CPUID_ARM926, "arm926"}, | |
ce819861 | 333 | { ARM_CPUID_ARM946, "arm946"}, |
3371d272 | 334 | { ARM_CPUID_ARM1026, "arm1026"}, |
9ee6e8bb | 335 | { ARM_CPUID_ARM1136, "arm1136"}, |
827df9f3 | 336 | { ARM_CPUID_ARM1136_R2, "arm1136-r2"}, |
9ee6e8bb PB |
337 | { ARM_CPUID_ARM11MPCORE, "arm11mpcore"}, |
338 | { ARM_CPUID_CORTEXM3, "cortex-m3"}, | |
339 | { ARM_CPUID_CORTEXA8, "cortex-a8"}, | |
10055562 | 340 | { ARM_CPUID_CORTEXA9, "cortex-a9"}, |
c3d2689d | 341 | { ARM_CPUID_TI925T, "ti925t" }, |
c1713132 AZ |
342 | { ARM_CPUID_PXA250, "pxa250" }, |
343 | { ARM_CPUID_PXA255, "pxa255" }, | |
344 | { ARM_CPUID_PXA260, "pxa260" }, | |
345 | { ARM_CPUID_PXA261, "pxa261" }, | |
346 | { ARM_CPUID_PXA262, "pxa262" }, | |
347 | { ARM_CPUID_PXA270, "pxa270" }, | |
348 | { ARM_CPUID_PXA270_A0, "pxa270-a0" }, | |
349 | { ARM_CPUID_PXA270_A1, "pxa270-a1" }, | |
350 | { ARM_CPUID_PXA270_B0, "pxa270-b0" }, | |
351 | { ARM_CPUID_PXA270_B1, "pxa270-b1" }, | |
352 | { ARM_CPUID_PXA270_C0, "pxa270-c0" }, | |
353 | { ARM_CPUID_PXA270_C5, "pxa270-c5" }, | |
9ee6e8bb | 354 | { ARM_CPUID_ANY, "any"}, |
3371d272 PB |
355 | { 0, NULL} |
356 | }; | |
357 | ||
9a78eead | 358 | void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf) |
5adb4839 PB |
359 | { |
360 | int i; | |
361 | ||
c732abe2 | 362 | (*cpu_fprintf)(f, "Available CPUs:\n"); |
5adb4839 | 363 | for (i = 0; arm_cpu_names[i].name; i++) { |
c732abe2 | 364 | (*cpu_fprintf)(f, " %s\n", arm_cpu_names[i].name); |
5adb4839 PB |
365 | } |
366 | } | |
367 | ||
aaed909a FB |
368 | /* return 0 if not found */ |
369 | static uint32_t cpu_arm_find_by_name(const char *name) | |
40f137e1 | 370 | { |
3371d272 PB |
371 | int i; |
372 | uint32_t id; | |
373 | ||
374 | id = 0; | |
3371d272 PB |
375 | for (i = 0; arm_cpu_names[i].name; i++) { |
376 | if (strcmp(name, arm_cpu_names[i].name) == 0) { | |
377 | id = arm_cpu_names[i].id; | |
378 | break; | |
379 | } | |
380 | } | |
aaed909a | 381 | return id; |
40f137e1 PB |
382 | } |
383 | ||
384 | void cpu_arm_close(CPUARMState *env) | |
385 | { | |
386 | free(env); | |
387 | } | |
388 | ||
2f4a40e5 AZ |
389 | uint32_t cpsr_read(CPUARMState *env) |
390 | { | |
391 | int ZF; | |
6fbe23d5 PB |
392 | ZF = (env->ZF == 0); |
393 | return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) | | |
2f4a40e5 AZ |
394 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) |
395 | | (env->thumb << 5) | ((env->condexec_bits & 3) << 25) | |
396 | | ((env->condexec_bits & 0xfc) << 8) | |
397 | | (env->GE << 16); | |
398 | } | |
399 | ||
400 | void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) | |
401 | { | |
2f4a40e5 | 402 | if (mask & CPSR_NZCV) { |
6fbe23d5 PB |
403 | env->ZF = (~val) & CPSR_Z; |
404 | env->NF = val; | |
2f4a40e5 AZ |
405 | env->CF = (val >> 29) & 1; |
406 | env->VF = (val << 3) & 0x80000000; | |
407 | } | |
408 | if (mask & CPSR_Q) | |
409 | env->QF = ((val & CPSR_Q) != 0); | |
410 | if (mask & CPSR_T) | |
411 | env->thumb = ((val & CPSR_T) != 0); | |
412 | if (mask & CPSR_IT_0_1) { | |
413 | env->condexec_bits &= ~3; | |
414 | env->condexec_bits |= (val >> 25) & 3; | |
415 | } | |
416 | if (mask & CPSR_IT_2_7) { | |
417 | env->condexec_bits &= 3; | |
418 | env->condexec_bits |= (val >> 8) & 0xfc; | |
419 | } | |
420 | if (mask & CPSR_GE) { | |
421 | env->GE = (val >> 16) & 0xf; | |
422 | } | |
423 | ||
424 | if ((env->uncached_cpsr ^ val) & mask & CPSR_M) { | |
425 | switch_mode(env, val & CPSR_M); | |
426 | } | |
427 | mask &= ~CACHED_CPSR_BITS; | |
428 | env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask); | |
429 | } | |
430 | ||
b26eefb6 PB |
431 | /* Sign/zero extend */ |
432 | uint32_t HELPER(sxtb16)(uint32_t x) | |
433 | { | |
434 | uint32_t res; | |
435 | res = (uint16_t)(int8_t)x; | |
436 | res |= (uint32_t)(int8_t)(x >> 16) << 16; | |
437 | return res; | |
438 | } | |
439 | ||
440 | uint32_t HELPER(uxtb16)(uint32_t x) | |
441 | { | |
442 | uint32_t res; | |
443 | res = (uint16_t)(uint8_t)x; | |
444 | res |= (uint32_t)(uint8_t)(x >> 16) << 16; | |
445 | return res; | |
446 | } | |
447 | ||
f51bbbfe PB |
448 | uint32_t HELPER(clz)(uint32_t x) |
449 | { | |
7bbcb0af | 450 | return clz32(x); |
f51bbbfe PB |
451 | } |
452 | ||
3670669c PB |
453 | int32_t HELPER(sdiv)(int32_t num, int32_t den) |
454 | { | |
455 | if (den == 0) | |
456 | return 0; | |
686eeb93 AJ |
457 | if (num == INT_MIN && den == -1) |
458 | return INT_MIN; | |
3670669c PB |
459 | return num / den; |
460 | } | |
461 | ||
462 | uint32_t HELPER(udiv)(uint32_t num, uint32_t den) | |
463 | { | |
464 | if (den == 0) | |
465 | return 0; | |
466 | return num / den; | |
467 | } | |
468 | ||
469 | uint32_t HELPER(rbit)(uint32_t x) | |
470 | { | |
471 | x = ((x & 0xff000000) >> 24) | |
472 | | ((x & 0x00ff0000) >> 8) | |
473 | | ((x & 0x0000ff00) << 8) | |
474 | | ((x & 0x000000ff) << 24); | |
475 | x = ((x & 0xf0f0f0f0) >> 4) | |
476 | | ((x & 0x0f0f0f0f) << 4); | |
477 | x = ((x & 0x88888888) >> 3) | |
478 | | ((x & 0x44444444) >> 1) | |
479 | | ((x & 0x22222222) << 1) | |
480 | | ((x & 0x11111111) << 3); | |
481 | return x; | |
482 | } | |
483 | ||
ad69471c PB |
484 | uint32_t HELPER(abs)(uint32_t x) |
485 | { | |
486 | return ((int32_t)x < 0) ? -x : x; | |
487 | } | |
488 | ||
5fafdf24 | 489 | #if defined(CONFIG_USER_ONLY) |
b5ff1b31 FB |
490 | |
491 | void do_interrupt (CPUState *env) | |
492 | { | |
493 | env->exception_index = -1; | |
494 | } | |
495 | ||
496 | int cpu_arm_handle_mmu_fault (CPUState *env, target_ulong address, int rw, | |
6ebbf390 | 497 | int mmu_idx, int is_softmmu) |
b5ff1b31 FB |
498 | { |
499 | if (rw == 2) { | |
500 | env->exception_index = EXCP_PREFETCH_ABORT; | |
501 | env->cp15.c6_insn = address; | |
502 | } else { | |
503 | env->exception_index = EXCP_DATA_ABORT; | |
504 | env->cp15.c6_data = address; | |
505 | } | |
506 | return 1; | |
507 | } | |
508 | ||
b5ff1b31 | 509 | /* These should probably raise undefined insn exceptions. */ |
8984bd2e | 510 | void HELPER(set_cp)(CPUState *env, uint32_t insn, uint32_t val) |
c1713132 AZ |
511 | { |
512 | int op1 = (insn >> 8) & 0xf; | |
513 | cpu_abort(env, "cp%i insn %08x\n", op1, insn); | |
514 | return; | |
515 | } | |
516 | ||
8984bd2e | 517 | uint32_t HELPER(get_cp)(CPUState *env, uint32_t insn) |
c1713132 AZ |
518 | { |
519 | int op1 = (insn >> 8) & 0xf; | |
520 | cpu_abort(env, "cp%i insn %08x\n", op1, insn); | |
521 | return 0; | |
522 | } | |
523 | ||
8984bd2e | 524 | void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val) |
b5ff1b31 FB |
525 | { |
526 | cpu_abort(env, "cp15 insn %08x\n", insn); | |
527 | } | |
528 | ||
8984bd2e | 529 | uint32_t HELPER(get_cp15)(CPUState *env, uint32_t insn) |
b5ff1b31 FB |
530 | { |
531 | cpu_abort(env, "cp15 insn %08x\n", insn); | |
b5ff1b31 FB |
532 | } |
533 | ||
9ee6e8bb | 534 | /* These should probably raise undefined insn exceptions. */ |
8984bd2e | 535 | void HELPER(v7m_msr)(CPUState *env, uint32_t reg, uint32_t val) |
9ee6e8bb PB |
536 | { |
537 | cpu_abort(env, "v7m_mrs %d\n", reg); | |
538 | } | |
539 | ||
8984bd2e | 540 | uint32_t HELPER(v7m_mrs)(CPUState *env, uint32_t reg) |
9ee6e8bb PB |
541 | { |
542 | cpu_abort(env, "v7m_mrs %d\n", reg); | |
543 | return 0; | |
544 | } | |
545 | ||
b5ff1b31 FB |
546 | void switch_mode(CPUState *env, int mode) |
547 | { | |
548 | if (mode != ARM_CPU_MODE_USR) | |
549 | cpu_abort(env, "Tried to switch out of user mode\n"); | |
550 | } | |
551 | ||
b0109805 | 552 | void HELPER(set_r13_banked)(CPUState *env, uint32_t mode, uint32_t val) |
9ee6e8bb PB |
553 | { |
554 | cpu_abort(env, "banked r13 write\n"); | |
555 | } | |
556 | ||
b0109805 | 557 | uint32_t HELPER(get_r13_banked)(CPUState *env, uint32_t mode) |
9ee6e8bb PB |
558 | { |
559 | cpu_abort(env, "banked r13 read\n"); | |
560 | return 0; | |
561 | } | |
562 | ||
b5ff1b31 FB |
563 | #else |
564 | ||
8e71621f PB |
565 | extern int semihosting_enabled; |
566 | ||
b5ff1b31 FB |
567 | /* Map CPU modes onto saved register banks. */ |
568 | static inline int bank_number (int mode) | |
569 | { | |
570 | switch (mode) { | |
571 | case ARM_CPU_MODE_USR: | |
572 | case ARM_CPU_MODE_SYS: | |
573 | return 0; | |
574 | case ARM_CPU_MODE_SVC: | |
575 | return 1; | |
576 | case ARM_CPU_MODE_ABT: | |
577 | return 2; | |
578 | case ARM_CPU_MODE_UND: | |
579 | return 3; | |
580 | case ARM_CPU_MODE_IRQ: | |
581 | return 4; | |
582 | case ARM_CPU_MODE_FIQ: | |
583 | return 5; | |
584 | } | |
585 | cpu_abort(cpu_single_env, "Bad mode %x\n", mode); | |
586 | return -1; | |
587 | } | |
588 | ||
589 | void switch_mode(CPUState *env, int mode) | |
590 | { | |
591 | int old_mode; | |
592 | int i; | |
593 | ||
594 | old_mode = env->uncached_cpsr & CPSR_M; | |
595 | if (mode == old_mode) | |
596 | return; | |
597 | ||
598 | if (old_mode == ARM_CPU_MODE_FIQ) { | |
599 | memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t)); | |
8637c67f | 600 | memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t)); |
b5ff1b31 FB |
601 | } else if (mode == ARM_CPU_MODE_FIQ) { |
602 | memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t)); | |
8637c67f | 603 | memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t)); |
b5ff1b31 FB |
604 | } |
605 | ||
606 | i = bank_number(old_mode); | |
607 | env->banked_r13[i] = env->regs[13]; | |
608 | env->banked_r14[i] = env->regs[14]; | |
609 | env->banked_spsr[i] = env->spsr; | |
610 | ||
611 | i = bank_number(mode); | |
612 | env->regs[13] = env->banked_r13[i]; | |
613 | env->regs[14] = env->banked_r14[i]; | |
614 | env->spsr = env->banked_spsr[i]; | |
615 | } | |
616 | ||
9ee6e8bb PB |
617 | static void v7m_push(CPUARMState *env, uint32_t val) |
618 | { | |
619 | env->regs[13] -= 4; | |
620 | stl_phys(env->regs[13], val); | |
621 | } | |
622 | ||
623 | static uint32_t v7m_pop(CPUARMState *env) | |
624 | { | |
625 | uint32_t val; | |
626 | val = ldl_phys(env->regs[13]); | |
627 | env->regs[13] += 4; | |
628 | return val; | |
629 | } | |
630 | ||
631 | /* Switch to V7M main or process stack pointer. */ | |
632 | static void switch_v7m_sp(CPUARMState *env, int process) | |
633 | { | |
634 | uint32_t tmp; | |
635 | if (env->v7m.current_sp != process) { | |
636 | tmp = env->v7m.other_sp; | |
637 | env->v7m.other_sp = env->regs[13]; | |
638 | env->regs[13] = tmp; | |
639 | env->v7m.current_sp = process; | |
640 | } | |
641 | } | |
642 | ||
643 | static void do_v7m_exception_exit(CPUARMState *env) | |
644 | { | |
645 | uint32_t type; | |
646 | uint32_t xpsr; | |
647 | ||
648 | type = env->regs[15]; | |
649 | if (env->v7m.exception != 0) | |
983fe826 | 650 | armv7m_nvic_complete_irq(env->nvic, env->v7m.exception); |
9ee6e8bb PB |
651 | |
652 | /* Switch to the target stack. */ | |
653 | switch_v7m_sp(env, (type & 4) != 0); | |
654 | /* Pop registers. */ | |
655 | env->regs[0] = v7m_pop(env); | |
656 | env->regs[1] = v7m_pop(env); | |
657 | env->regs[2] = v7m_pop(env); | |
658 | env->regs[3] = v7m_pop(env); | |
659 | env->regs[12] = v7m_pop(env); | |
660 | env->regs[14] = v7m_pop(env); | |
661 | env->regs[15] = v7m_pop(env); | |
662 | xpsr = v7m_pop(env); | |
663 | xpsr_write(env, xpsr, 0xfffffdff); | |
664 | /* Undo stack alignment. */ | |
665 | if (xpsr & 0x200) | |
666 | env->regs[13] |= 4; | |
667 | /* ??? The exception return type specifies Thread/Handler mode. However | |
668 | this is also implied by the xPSR value. Not sure what to do | |
669 | if there is a mismatch. */ | |
670 | /* ??? Likewise for mismatches between the CONTROL register and the stack | |
671 | pointer. */ | |
672 | } | |
673 | ||
2b3ea315 | 674 | static void do_interrupt_v7m(CPUARMState *env) |
9ee6e8bb PB |
675 | { |
676 | uint32_t xpsr = xpsr_read(env); | |
677 | uint32_t lr; | |
678 | uint32_t addr; | |
679 | ||
680 | lr = 0xfffffff1; | |
681 | if (env->v7m.current_sp) | |
682 | lr |= 4; | |
683 | if (env->v7m.exception == 0) | |
684 | lr |= 8; | |
685 | ||
686 | /* For exceptions we just mark as pending on the NVIC, and let that | |
687 | handle it. */ | |
688 | /* TODO: Need to escalate if the current priority is higher than the | |
689 | one we're raising. */ | |
690 | switch (env->exception_index) { | |
691 | case EXCP_UDEF: | |
983fe826 | 692 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE); |
9ee6e8bb PB |
693 | return; |
694 | case EXCP_SWI: | |
695 | env->regs[15] += 2; | |
983fe826 | 696 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC); |
9ee6e8bb PB |
697 | return; |
698 | case EXCP_PREFETCH_ABORT: | |
699 | case EXCP_DATA_ABORT: | |
983fe826 | 700 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM); |
9ee6e8bb PB |
701 | return; |
702 | case EXCP_BKPT: | |
2ad207d4 PB |
703 | if (semihosting_enabled) { |
704 | int nr; | |
705 | nr = lduw_code(env->regs[15]) & 0xff; | |
706 | if (nr == 0xab) { | |
707 | env->regs[15] += 2; | |
708 | env->regs[0] = do_arm_semihosting(env); | |
709 | return; | |
710 | } | |
711 | } | |
983fe826 | 712 | armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG); |
9ee6e8bb PB |
713 | return; |
714 | case EXCP_IRQ: | |
983fe826 | 715 | env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic); |
9ee6e8bb PB |
716 | break; |
717 | case EXCP_EXCEPTION_EXIT: | |
718 | do_v7m_exception_exit(env); | |
719 | return; | |
720 | default: | |
721 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); | |
722 | return; /* Never happens. Keep compiler happy. */ | |
723 | } | |
724 | ||
725 | /* Align stack pointer. */ | |
726 | /* ??? Should only do this if Configuration Control Register | |
727 | STACKALIGN bit is set. */ | |
728 | if (env->regs[13] & 4) { | |
ab19b0ec | 729 | env->regs[13] -= 4; |
9ee6e8bb PB |
730 | xpsr |= 0x200; |
731 | } | |
6c95676b | 732 | /* Switch to the handler mode. */ |
9ee6e8bb PB |
733 | v7m_push(env, xpsr); |
734 | v7m_push(env, env->regs[15]); | |
735 | v7m_push(env, env->regs[14]); | |
736 | v7m_push(env, env->regs[12]); | |
737 | v7m_push(env, env->regs[3]); | |
738 | v7m_push(env, env->regs[2]); | |
739 | v7m_push(env, env->regs[1]); | |
740 | v7m_push(env, env->regs[0]); | |
741 | switch_v7m_sp(env, 0); | |
742 | env->uncached_cpsr &= ~CPSR_IT; | |
743 | env->regs[14] = lr; | |
744 | addr = ldl_phys(env->v7m.vecbase + env->v7m.exception * 4); | |
745 | env->regs[15] = addr & 0xfffffffe; | |
746 | env->thumb = addr & 1; | |
747 | } | |
748 | ||
b5ff1b31 FB |
749 | /* Handle a CPU exception. */ |
750 | void do_interrupt(CPUARMState *env) | |
751 | { | |
752 | uint32_t addr; | |
753 | uint32_t mask; | |
754 | int new_mode; | |
755 | uint32_t offset; | |
756 | ||
9ee6e8bb PB |
757 | if (IS_M(env)) { |
758 | do_interrupt_v7m(env); | |
759 | return; | |
760 | } | |
b5ff1b31 FB |
761 | /* TODO: Vectored interrupt controller. */ |
762 | switch (env->exception_index) { | |
763 | case EXCP_UDEF: | |
764 | new_mode = ARM_CPU_MODE_UND; | |
765 | addr = 0x04; | |
766 | mask = CPSR_I; | |
767 | if (env->thumb) | |
768 | offset = 2; | |
769 | else | |
770 | offset = 4; | |
771 | break; | |
772 | case EXCP_SWI: | |
8e71621f PB |
773 | if (semihosting_enabled) { |
774 | /* Check for semihosting interrupt. */ | |
775 | if (env->thumb) { | |
776 | mask = lduw_code(env->regs[15] - 2) & 0xff; | |
777 | } else { | |
778 | mask = ldl_code(env->regs[15] - 4) & 0xffffff; | |
779 | } | |
780 | /* Only intercept calls from privileged modes, to provide some | |
781 | semblance of security. */ | |
782 | if (((mask == 0x123456 && !env->thumb) | |
783 | || (mask == 0xab && env->thumb)) | |
784 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { | |
785 | env->regs[0] = do_arm_semihosting(env); | |
786 | return; | |
787 | } | |
788 | } | |
b5ff1b31 FB |
789 | new_mode = ARM_CPU_MODE_SVC; |
790 | addr = 0x08; | |
791 | mask = CPSR_I; | |
601d70b9 | 792 | /* The PC already points to the next instruction. */ |
b5ff1b31 FB |
793 | offset = 0; |
794 | break; | |
06c949e6 | 795 | case EXCP_BKPT: |
9ee6e8bb | 796 | /* See if this is a semihosting syscall. */ |
2ad207d4 | 797 | if (env->thumb && semihosting_enabled) { |
9ee6e8bb PB |
798 | mask = lduw_code(env->regs[15]) & 0xff; |
799 | if (mask == 0xab | |
800 | && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) { | |
801 | env->regs[15] += 2; | |
802 | env->regs[0] = do_arm_semihosting(env); | |
803 | return; | |
804 | } | |
805 | } | |
806 | /* Fall through to prefetch abort. */ | |
807 | case EXCP_PREFETCH_ABORT: | |
b5ff1b31 FB |
808 | new_mode = ARM_CPU_MODE_ABT; |
809 | addr = 0x0c; | |
810 | mask = CPSR_A | CPSR_I; | |
811 | offset = 4; | |
812 | break; | |
813 | case EXCP_DATA_ABORT: | |
814 | new_mode = ARM_CPU_MODE_ABT; | |
815 | addr = 0x10; | |
816 | mask = CPSR_A | CPSR_I; | |
817 | offset = 8; | |
818 | break; | |
819 | case EXCP_IRQ: | |
820 | new_mode = ARM_CPU_MODE_IRQ; | |
821 | addr = 0x18; | |
822 | /* Disable IRQ and imprecise data aborts. */ | |
823 | mask = CPSR_A | CPSR_I; | |
824 | offset = 4; | |
825 | break; | |
826 | case EXCP_FIQ: | |
827 | new_mode = ARM_CPU_MODE_FIQ; | |
828 | addr = 0x1c; | |
829 | /* Disable FIQ, IRQ and imprecise data aborts. */ | |
830 | mask = CPSR_A | CPSR_I | CPSR_F; | |
831 | offset = 4; | |
832 | break; | |
833 | default: | |
834 | cpu_abort(env, "Unhandled exception 0x%x\n", env->exception_index); | |
835 | return; /* Never happens. Keep compiler happy. */ | |
836 | } | |
837 | /* High vectors. */ | |
838 | if (env->cp15.c1_sys & (1 << 13)) { | |
839 | addr += 0xffff0000; | |
840 | } | |
841 | switch_mode (env, new_mode); | |
842 | env->spsr = cpsr_read(env); | |
9ee6e8bb PB |
843 | /* Clear IT bits. */ |
844 | env->condexec_bits = 0; | |
30a8cac1 | 845 | /* Switch to the new mode, and to the correct instruction set. */ |
6d7e6326 | 846 | env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode; |
b5ff1b31 | 847 | env->uncached_cpsr |= mask; |
30a8cac1 | 848 | env->thumb = (env->cp15.c1_sys & (1 << 30)) != 0; |
b5ff1b31 FB |
849 | env->regs[14] = env->regs[15] + offset; |
850 | env->regs[15] = addr; | |
851 | env->interrupt_request |= CPU_INTERRUPT_EXITTB; | |
852 | } | |
853 | ||
854 | /* Check section/page access permissions. | |
855 | Returns the page protection flags, or zero if the access is not | |
856 | permitted. */ | |
857 | static inline int check_ap(CPUState *env, int ap, int domain, int access_type, | |
858 | int is_user) | |
859 | { | |
9ee6e8bb PB |
860 | int prot_ro; |
861 | ||
b5ff1b31 FB |
862 | if (domain == 3) |
863 | return PAGE_READ | PAGE_WRITE; | |
864 | ||
9ee6e8bb PB |
865 | if (access_type == 1) |
866 | prot_ro = 0; | |
867 | else | |
868 | prot_ro = PAGE_READ; | |
869 | ||
b5ff1b31 FB |
870 | switch (ap) { |
871 | case 0: | |
78600320 | 872 | if (access_type == 1) |
b5ff1b31 FB |
873 | return 0; |
874 | switch ((env->cp15.c1_sys >> 8) & 3) { | |
875 | case 1: | |
876 | return is_user ? 0 : PAGE_READ; | |
877 | case 2: | |
878 | return PAGE_READ; | |
879 | default: | |
880 | return 0; | |
881 | } | |
882 | case 1: | |
883 | return is_user ? 0 : PAGE_READ | PAGE_WRITE; | |
884 | case 2: | |
885 | if (is_user) | |
9ee6e8bb | 886 | return prot_ro; |
b5ff1b31 FB |
887 | else |
888 | return PAGE_READ | PAGE_WRITE; | |
889 | case 3: | |
890 | return PAGE_READ | PAGE_WRITE; | |
d4934d18 | 891 | case 4: /* Reserved. */ |
9ee6e8bb PB |
892 | return 0; |
893 | case 5: | |
894 | return is_user ? 0 : prot_ro; | |
895 | case 6: | |
896 | return prot_ro; | |
d4934d18 PB |
897 | case 7: |
898 | if (!arm_feature (env, ARM_FEATURE_V7)) | |
899 | return 0; | |
900 | return prot_ro; | |
b5ff1b31 FB |
901 | default: |
902 | abort(); | |
903 | } | |
904 | } | |
905 | ||
b2fa1797 PB |
906 | static uint32_t get_level1_table_address(CPUState *env, uint32_t address) |
907 | { | |
908 | uint32_t table; | |
909 | ||
910 | if (address & env->cp15.c2_mask) | |
911 | table = env->cp15.c2_base1 & 0xffffc000; | |
912 | else | |
913 | table = env->cp15.c2_base0 & env->cp15.c2_base_mask; | |
914 | ||
915 | table |= (address >> 18) & 0x3ffc; | |
916 | return table; | |
917 | } | |
918 | ||
9ee6e8bb | 919 | static int get_phys_addr_v5(CPUState *env, uint32_t address, int access_type, |
d4c430a8 PB |
920 | int is_user, uint32_t *phys_ptr, int *prot, |
921 | target_ulong *page_size) | |
b5ff1b31 FB |
922 | { |
923 | int code; | |
924 | uint32_t table; | |
925 | uint32_t desc; | |
926 | int type; | |
927 | int ap; | |
928 | int domain; | |
929 | uint32_t phys_addr; | |
930 | ||
9ee6e8bb PB |
931 | /* Pagetable walk. */ |
932 | /* Lookup l1 descriptor. */ | |
b2fa1797 | 933 | table = get_level1_table_address(env, address); |
9ee6e8bb PB |
934 | desc = ldl_phys(table); |
935 | type = (desc & 3); | |
936 | domain = (env->cp15.c3 >> ((desc >> 4) & 0x1e)) & 3; | |
937 | if (type == 0) { | |
601d70b9 | 938 | /* Section translation fault. */ |
9ee6e8bb PB |
939 | code = 5; |
940 | goto do_fault; | |
941 | } | |
942 | if (domain == 0 || domain == 2) { | |
943 | if (type == 2) | |
944 | code = 9; /* Section domain fault. */ | |
945 | else | |
946 | code = 11; /* Page domain fault. */ | |
947 | goto do_fault; | |
948 | } | |
949 | if (type == 2) { | |
950 | /* 1Mb section. */ | |
951 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); | |
952 | ap = (desc >> 10) & 3; | |
953 | code = 13; | |
d4c430a8 | 954 | *page_size = 1024 * 1024; |
9ee6e8bb PB |
955 | } else { |
956 | /* Lookup l2 entry. */ | |
957 | if (type == 1) { | |
958 | /* Coarse pagetable. */ | |
959 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); | |
960 | } else { | |
961 | /* Fine pagetable. */ | |
962 | table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); | |
963 | } | |
964 | desc = ldl_phys(table); | |
965 | switch (desc & 3) { | |
966 | case 0: /* Page translation fault. */ | |
967 | code = 7; | |
968 | goto do_fault; | |
969 | case 1: /* 64k page. */ | |
970 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); | |
971 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; | |
d4c430a8 | 972 | *page_size = 0x10000; |
ce819861 | 973 | break; |
9ee6e8bb PB |
974 | case 2: /* 4k page. */ |
975 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); | |
976 | ap = (desc >> (4 + ((address >> 13) & 6))) & 3; | |
d4c430a8 | 977 | *page_size = 0x1000; |
ce819861 | 978 | break; |
9ee6e8bb PB |
979 | case 3: /* 1k page. */ |
980 | if (type == 1) { | |
981 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { | |
982 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); | |
983 | } else { | |
984 | /* Page translation fault. */ | |
985 | code = 7; | |
986 | goto do_fault; | |
987 | } | |
988 | } else { | |
989 | phys_addr = (desc & 0xfffffc00) | (address & 0x3ff); | |
990 | } | |
991 | ap = (desc >> 4) & 3; | |
d4c430a8 | 992 | *page_size = 0x400; |
ce819861 PB |
993 | break; |
994 | default: | |
9ee6e8bb PB |
995 | /* Never happens, but compiler isn't smart enough to tell. */ |
996 | abort(); | |
ce819861 | 997 | } |
9ee6e8bb PB |
998 | code = 15; |
999 | } | |
1000 | *prot = check_ap(env, ap, domain, access_type, is_user); | |
1001 | if (!*prot) { | |
1002 | /* Access permission fault. */ | |
1003 | goto do_fault; | |
1004 | } | |
3ad493fc | 1005 | *prot |= PAGE_EXEC; |
9ee6e8bb PB |
1006 | *phys_ptr = phys_addr; |
1007 | return 0; | |
1008 | do_fault: | |
1009 | return code | (domain << 4); | |
1010 | } | |
1011 | ||
1012 | static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, | |
d4c430a8 PB |
1013 | int is_user, uint32_t *phys_ptr, int *prot, |
1014 | target_ulong *page_size) | |
9ee6e8bb PB |
1015 | { |
1016 | int code; | |
1017 | uint32_t table; | |
1018 | uint32_t desc; | |
1019 | uint32_t xn; | |
1020 | int type; | |
1021 | int ap; | |
1022 | int domain; | |
1023 | uint32_t phys_addr; | |
1024 | ||
1025 | /* Pagetable walk. */ | |
1026 | /* Lookup l1 descriptor. */ | |
b2fa1797 | 1027 | table = get_level1_table_address(env, address); |
9ee6e8bb PB |
1028 | desc = ldl_phys(table); |
1029 | type = (desc & 3); | |
1030 | if (type == 0) { | |
601d70b9 | 1031 | /* Section translation fault. */ |
9ee6e8bb PB |
1032 | code = 5; |
1033 | domain = 0; | |
1034 | goto do_fault; | |
1035 | } else if (type == 2 && (desc & (1 << 18))) { | |
1036 | /* Supersection. */ | |
1037 | domain = 0; | |
b5ff1b31 | 1038 | } else { |
9ee6e8bb PB |
1039 | /* Section or page. */ |
1040 | domain = (desc >> 4) & 0x1e; | |
1041 | } | |
1042 | domain = (env->cp15.c3 >> domain) & 3; | |
1043 | if (domain == 0 || domain == 2) { | |
1044 | if (type == 2) | |
1045 | code = 9; /* Section domain fault. */ | |
1046 | else | |
1047 | code = 11; /* Page domain fault. */ | |
1048 | goto do_fault; | |
1049 | } | |
1050 | if (type == 2) { | |
1051 | if (desc & (1 << 18)) { | |
1052 | /* Supersection. */ | |
1053 | phys_addr = (desc & 0xff000000) | (address & 0x00ffffff); | |
d4c430a8 | 1054 | *page_size = 0x1000000; |
b5ff1b31 | 1055 | } else { |
9ee6e8bb PB |
1056 | /* Section. */ |
1057 | phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); | |
d4c430a8 | 1058 | *page_size = 0x100000; |
b5ff1b31 | 1059 | } |
9ee6e8bb PB |
1060 | ap = ((desc >> 10) & 3) | ((desc >> 13) & 4); |
1061 | xn = desc & (1 << 4); | |
1062 | code = 13; | |
1063 | } else { | |
1064 | /* Lookup l2 entry. */ | |
1065 | table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); | |
1066 | desc = ldl_phys(table); | |
1067 | ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); | |
1068 | switch (desc & 3) { | |
1069 | case 0: /* Page translation fault. */ | |
1070 | code = 7; | |
b5ff1b31 | 1071 | goto do_fault; |
9ee6e8bb PB |
1072 | case 1: /* 64k page. */ |
1073 | phys_addr = (desc & 0xffff0000) | (address & 0xffff); | |
1074 | xn = desc & (1 << 15); | |
d4c430a8 | 1075 | *page_size = 0x10000; |
9ee6e8bb PB |
1076 | break; |
1077 | case 2: case 3: /* 4k page. */ | |
1078 | phys_addr = (desc & 0xfffff000) | (address & 0xfff); | |
1079 | xn = desc & 1; | |
d4c430a8 | 1080 | *page_size = 0x1000; |
9ee6e8bb PB |
1081 | break; |
1082 | default: | |
1083 | /* Never happens, but compiler isn't smart enough to tell. */ | |
1084 | abort(); | |
b5ff1b31 | 1085 | } |
9ee6e8bb PB |
1086 | code = 15; |
1087 | } | |
c0034328 JR |
1088 | if (domain == 3) { |
1089 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; | |
1090 | } else { | |
1091 | if (xn && access_type == 2) | |
1092 | goto do_fault; | |
9ee6e8bb | 1093 | |
c0034328 JR |
1094 | /* The simplified model uses AP[0] as an access control bit. */ |
1095 | if ((env->cp15.c1_sys & (1 << 29)) && (ap & 1) == 0) { | |
1096 | /* Access flag fault. */ | |
1097 | code = (code == 15) ? 6 : 3; | |
1098 | goto do_fault; | |
1099 | } | |
1100 | *prot = check_ap(env, ap, domain, access_type, is_user); | |
1101 | if (!*prot) { | |
1102 | /* Access permission fault. */ | |
1103 | goto do_fault; | |
1104 | } | |
1105 | if (!xn) { | |
1106 | *prot |= PAGE_EXEC; | |
1107 | } | |
3ad493fc | 1108 | } |
9ee6e8bb | 1109 | *phys_ptr = phys_addr; |
b5ff1b31 FB |
1110 | return 0; |
1111 | do_fault: | |
1112 | return code | (domain << 4); | |
1113 | } | |
1114 | ||
9ee6e8bb PB |
1115 | static int get_phys_addr_mpu(CPUState *env, uint32_t address, int access_type, |
1116 | int is_user, uint32_t *phys_ptr, int *prot) | |
1117 | { | |
1118 | int n; | |
1119 | uint32_t mask; | |
1120 | uint32_t base; | |
1121 | ||
1122 | *phys_ptr = address; | |
1123 | for (n = 7; n >= 0; n--) { | |
1124 | base = env->cp15.c6_region[n]; | |
1125 | if ((base & 1) == 0) | |
1126 | continue; | |
1127 | mask = 1 << ((base >> 1) & 0x1f); | |
1128 | /* Keep this shift separate from the above to avoid an | |
1129 | (undefined) << 32. */ | |
1130 | mask = (mask << 1) - 1; | |
1131 | if (((base ^ address) & ~mask) == 0) | |
1132 | break; | |
1133 | } | |
1134 | if (n < 0) | |
1135 | return 2; | |
1136 | ||
1137 | if (access_type == 2) { | |
1138 | mask = env->cp15.c5_insn; | |
1139 | } else { | |
1140 | mask = env->cp15.c5_data; | |
1141 | } | |
1142 | mask = (mask >> (n * 4)) & 0xf; | |
1143 | switch (mask) { | |
1144 | case 0: | |
1145 | return 1; | |
1146 | case 1: | |
1147 | if (is_user) | |
1148 | return 1; | |
1149 | *prot = PAGE_READ | PAGE_WRITE; | |
1150 | break; | |
1151 | case 2: | |
1152 | *prot = PAGE_READ; | |
1153 | if (!is_user) | |
1154 | *prot |= PAGE_WRITE; | |
1155 | break; | |
1156 | case 3: | |
1157 | *prot = PAGE_READ | PAGE_WRITE; | |
1158 | break; | |
1159 | case 5: | |
1160 | if (is_user) | |
1161 | return 1; | |
1162 | *prot = PAGE_READ; | |
1163 | break; | |
1164 | case 6: | |
1165 | *prot = PAGE_READ; | |
1166 | break; | |
1167 | default: | |
1168 | /* Bad permission. */ | |
1169 | return 1; | |
1170 | } | |
3ad493fc | 1171 | *prot |= PAGE_EXEC; |
9ee6e8bb PB |
1172 | return 0; |
1173 | } | |
1174 | ||
1175 | static inline int get_phys_addr(CPUState *env, uint32_t address, | |
1176 | int access_type, int is_user, | |
d4c430a8 PB |
1177 | uint32_t *phys_ptr, int *prot, |
1178 | target_ulong *page_size) | |
9ee6e8bb PB |
1179 | { |
1180 | /* Fast Context Switch Extension. */ | |
1181 | if (address < 0x02000000) | |
1182 | address += env->cp15.c13_fcse; | |
1183 | ||
1184 | if ((env->cp15.c1_sys & 1) == 0) { | |
1185 | /* MMU/MPU disabled. */ | |
1186 | *phys_ptr = address; | |
3ad493fc | 1187 | *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
d4c430a8 | 1188 | *page_size = TARGET_PAGE_SIZE; |
9ee6e8bb PB |
1189 | return 0; |
1190 | } else if (arm_feature(env, ARM_FEATURE_MPU)) { | |
d4c430a8 | 1191 | *page_size = TARGET_PAGE_SIZE; |
9ee6e8bb PB |
1192 | return get_phys_addr_mpu(env, address, access_type, is_user, phys_ptr, |
1193 | prot); | |
1194 | } else if (env->cp15.c1_sys & (1 << 23)) { | |
1195 | return get_phys_addr_v6(env, address, access_type, is_user, phys_ptr, | |
d4c430a8 | 1196 | prot, page_size); |
9ee6e8bb PB |
1197 | } else { |
1198 | return get_phys_addr_v5(env, address, access_type, is_user, phys_ptr, | |
d4c430a8 | 1199 | prot, page_size); |
9ee6e8bb PB |
1200 | } |
1201 | } | |
1202 | ||
b5ff1b31 | 1203 | int cpu_arm_handle_mmu_fault (CPUState *env, target_ulong address, |
6ebbf390 | 1204 | int access_type, int mmu_idx, int is_softmmu) |
b5ff1b31 FB |
1205 | { |
1206 | uint32_t phys_addr; | |
d4c430a8 | 1207 | target_ulong page_size; |
b5ff1b31 | 1208 | int prot; |
6ebbf390 | 1209 | int ret, is_user; |
b5ff1b31 | 1210 | |
6ebbf390 | 1211 | is_user = mmu_idx == MMU_USER_IDX; |
d4c430a8 PB |
1212 | ret = get_phys_addr(env, address, access_type, is_user, &phys_addr, &prot, |
1213 | &page_size); | |
b5ff1b31 FB |
1214 | if (ret == 0) { |
1215 | /* Map a single [sub]page. */ | |
1216 | phys_addr &= ~(uint32_t)0x3ff; | |
1217 | address &= ~(uint32_t)0x3ff; | |
3ad493fc | 1218 | tlb_set_page (env, address, phys_addr, prot, mmu_idx, page_size); |
d4c430a8 | 1219 | return 0; |
b5ff1b31 FB |
1220 | } |
1221 | ||
1222 | if (access_type == 2) { | |
1223 | env->cp15.c5_insn = ret; | |
1224 | env->cp15.c6_insn = address; | |
1225 | env->exception_index = EXCP_PREFETCH_ABORT; | |
1226 | } else { | |
1227 | env->cp15.c5_data = ret; | |
9ee6e8bb PB |
1228 | if (access_type == 1 && arm_feature(env, ARM_FEATURE_V6)) |
1229 | env->cp15.c5_data |= (1 << 11); | |
b5ff1b31 FB |
1230 | env->cp15.c6_data = address; |
1231 | env->exception_index = EXCP_DATA_ABORT; | |
1232 | } | |
1233 | return 1; | |
1234 | } | |
1235 | ||
c227f099 | 1236 | target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
b5ff1b31 FB |
1237 | { |
1238 | uint32_t phys_addr; | |
d4c430a8 | 1239 | target_ulong page_size; |
b5ff1b31 FB |
1240 | int prot; |
1241 | int ret; | |
1242 | ||
d4c430a8 | 1243 | ret = get_phys_addr(env, addr, 0, 0, &phys_addr, &prot, &page_size); |
b5ff1b31 FB |
1244 | |
1245 | if (ret != 0) | |
1246 | return -1; | |
1247 | ||
1248 | return phys_addr; | |
1249 | } | |
1250 | ||
8984bd2e | 1251 | void HELPER(set_cp)(CPUState *env, uint32_t insn, uint32_t val) |
c1713132 AZ |
1252 | { |
1253 | int cp_num = (insn >> 8) & 0xf; | |
1254 | int cp_info = (insn >> 5) & 7; | |
1255 | int src = (insn >> 16) & 0xf; | |
1256 | int operand = insn & 0xf; | |
1257 | ||
1258 | if (env->cp[cp_num].cp_write) | |
1259 | env->cp[cp_num].cp_write(env->cp[cp_num].opaque, | |
1260 | cp_info, src, operand, val); | |
1261 | } | |
1262 | ||
8984bd2e | 1263 | uint32_t HELPER(get_cp)(CPUState *env, uint32_t insn) |
c1713132 AZ |
1264 | { |
1265 | int cp_num = (insn >> 8) & 0xf; | |
1266 | int cp_info = (insn >> 5) & 7; | |
1267 | int dest = (insn >> 16) & 0xf; | |
1268 | int operand = insn & 0xf; | |
1269 | ||
1270 | if (env->cp[cp_num].cp_read) | |
1271 | return env->cp[cp_num].cp_read(env->cp[cp_num].opaque, | |
1272 | cp_info, dest, operand); | |
1273 | return 0; | |
1274 | } | |
1275 | ||
ce819861 PB |
1276 | /* Return basic MPU access permission bits. */ |
1277 | static uint32_t simple_mpu_ap_bits(uint32_t val) | |
1278 | { | |
1279 | uint32_t ret; | |
1280 | uint32_t mask; | |
1281 | int i; | |
1282 | ret = 0; | |
1283 | mask = 3; | |
1284 | for (i = 0; i < 16; i += 2) { | |
1285 | ret |= (val >> i) & mask; | |
1286 | mask <<= 2; | |
1287 | } | |
1288 | return ret; | |
1289 | } | |
1290 | ||
1291 | /* Pad basic MPU access permission bits to extended format. */ | |
1292 | static uint32_t extended_mpu_ap_bits(uint32_t val) | |
1293 | { | |
1294 | uint32_t ret; | |
1295 | uint32_t mask; | |
1296 | int i; | |
1297 | ret = 0; | |
1298 | mask = 3; | |
1299 | for (i = 0; i < 16; i += 2) { | |
1300 | ret |= (val & mask) << i; | |
1301 | mask <<= 2; | |
1302 | } | |
1303 | return ret; | |
1304 | } | |
1305 | ||
8984bd2e | 1306 | void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val) |
b5ff1b31 | 1307 | { |
9ee6e8bb PB |
1308 | int op1; |
1309 | int op2; | |
1310 | int crm; | |
b5ff1b31 | 1311 | |
9ee6e8bb | 1312 | op1 = (insn >> 21) & 7; |
b5ff1b31 | 1313 | op2 = (insn >> 5) & 7; |
ce819861 | 1314 | crm = insn & 0xf; |
b5ff1b31 | 1315 | switch ((insn >> 16) & 0xf) { |
9ee6e8bb | 1316 | case 0: |
9ee6e8bb | 1317 | /* ID codes. */ |
610c3c8a AZ |
1318 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
1319 | break; | |
c3d2689d AZ |
1320 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1321 | break; | |
a49ea279 PB |
1322 | if (arm_feature(env, ARM_FEATURE_V7) |
1323 | && op1 == 2 && crm == 0 && op2 == 0) { | |
1324 | env->cp15.c0_cssel = val & 0xf; | |
1325 | break; | |
1326 | } | |
b5ff1b31 FB |
1327 | goto bad_reg; |
1328 | case 1: /* System configuration. */ | |
c3d2689d AZ |
1329 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1330 | op2 = 0; | |
b5ff1b31 FB |
1331 | switch (op2) { |
1332 | case 0: | |
ce819861 | 1333 | if (!arm_feature(env, ARM_FEATURE_XSCALE) || crm == 0) |
c1713132 | 1334 | env->cp15.c1_sys = val; |
b5ff1b31 FB |
1335 | /* ??? Lots of these bits are not implemented. */ |
1336 | /* This may enable/disable the MMU, so do a TLB flush. */ | |
1337 | tlb_flush(env, 1); | |
1338 | break; | |
9ee6e8bb | 1339 | case 1: /* Auxiliary cotrol register. */ |
610c3c8a AZ |
1340 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
1341 | env->cp15.c1_xscaleauxcr = val; | |
c1713132 | 1342 | break; |
610c3c8a | 1343 | } |
9ee6e8bb PB |
1344 | /* Not implemented. */ |
1345 | break; | |
b5ff1b31 | 1346 | case 2: |
610c3c8a AZ |
1347 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
1348 | goto bad_reg; | |
4be27dbb PB |
1349 | if (env->cp15.c1_coproc != val) { |
1350 | env->cp15.c1_coproc = val; | |
1351 | /* ??? Is this safe when called from within a TB? */ | |
1352 | tb_flush(env); | |
1353 | } | |
c1713132 | 1354 | break; |
b5ff1b31 FB |
1355 | default: |
1356 | goto bad_reg; | |
1357 | } | |
1358 | break; | |
ce819861 PB |
1359 | case 2: /* MMU Page table control / MPU cache control. */ |
1360 | if (arm_feature(env, ARM_FEATURE_MPU)) { | |
1361 | switch (op2) { | |
1362 | case 0: | |
1363 | env->cp15.c2_data = val; | |
1364 | break; | |
1365 | case 1: | |
1366 | env->cp15.c2_insn = val; | |
1367 | break; | |
1368 | default: | |
1369 | goto bad_reg; | |
1370 | } | |
1371 | } else { | |
9ee6e8bb PB |
1372 | switch (op2) { |
1373 | case 0: | |
1374 | env->cp15.c2_base0 = val; | |
1375 | break; | |
1376 | case 1: | |
1377 | env->cp15.c2_base1 = val; | |
1378 | break; | |
1379 | case 2: | |
b2fa1797 PB |
1380 | val &= 7; |
1381 | env->cp15.c2_control = val; | |
9ee6e8bb | 1382 | env->cp15.c2_mask = ~(((uint32_t)0xffffffffu) >> val); |
b2fa1797 | 1383 | env->cp15.c2_base_mask = ~((uint32_t)0x3fffu >> val); |
9ee6e8bb PB |
1384 | break; |
1385 | default: | |
1386 | goto bad_reg; | |
1387 | } | |
ce819861 | 1388 | } |
b5ff1b31 | 1389 | break; |
ce819861 | 1390 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
b5ff1b31 | 1391 | env->cp15.c3 = val; |
405ee3ad | 1392 | tlb_flush(env, 1); /* Flush TLB as domain not tracked in TLB */ |
b5ff1b31 FB |
1393 | break; |
1394 | case 4: /* Reserved. */ | |
1395 | goto bad_reg; | |
ce819861 | 1396 | case 5: /* MMU Fault status / MPU access permission. */ |
c3d2689d AZ |
1397 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1398 | op2 = 0; | |
b5ff1b31 FB |
1399 | switch (op2) { |
1400 | case 0: | |
ce819861 PB |
1401 | if (arm_feature(env, ARM_FEATURE_MPU)) |
1402 | val = extended_mpu_ap_bits(val); | |
b5ff1b31 FB |
1403 | env->cp15.c5_data = val; |
1404 | break; | |
1405 | case 1: | |
ce819861 PB |
1406 | if (arm_feature(env, ARM_FEATURE_MPU)) |
1407 | val = extended_mpu_ap_bits(val); | |
b5ff1b31 FB |
1408 | env->cp15.c5_insn = val; |
1409 | break; | |
ce819861 PB |
1410 | case 2: |
1411 | if (!arm_feature(env, ARM_FEATURE_MPU)) | |
1412 | goto bad_reg; | |
1413 | env->cp15.c5_data = val; | |
b5ff1b31 | 1414 | break; |
ce819861 PB |
1415 | case 3: |
1416 | if (!arm_feature(env, ARM_FEATURE_MPU)) | |
1417 | goto bad_reg; | |
1418 | env->cp15.c5_insn = val; | |
b5ff1b31 FB |
1419 | break; |
1420 | default: | |
1421 | goto bad_reg; | |
1422 | } | |
1423 | break; | |
ce819861 PB |
1424 | case 6: /* MMU Fault address / MPU base/size. */ |
1425 | if (arm_feature(env, ARM_FEATURE_MPU)) { | |
1426 | if (crm >= 8) | |
1427 | goto bad_reg; | |
1428 | env->cp15.c6_region[crm] = val; | |
1429 | } else { | |
c3d2689d AZ |
1430 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1431 | op2 = 0; | |
ce819861 PB |
1432 | switch (op2) { |
1433 | case 0: | |
1434 | env->cp15.c6_data = val; | |
1435 | break; | |
9ee6e8bb PB |
1436 | case 1: /* ??? This is WFAR on armv6 */ |
1437 | case 2: | |
ce819861 PB |
1438 | env->cp15.c6_insn = val; |
1439 | break; | |
1440 | default: | |
1441 | goto bad_reg; | |
1442 | } | |
1443 | } | |
1444 | break; | |
b5ff1b31 | 1445 | case 7: /* Cache control. */ |
c3d2689d AZ |
1446 | env->cp15.c15_i_max = 0x000; |
1447 | env->cp15.c15_i_min = 0xff0; | |
b5ff1b31 | 1448 | /* No cache, so nothing to do. */ |
9ee6e8bb | 1449 | /* ??? MPCore has VA to PA translation functions. */ |
b5ff1b31 FB |
1450 | break; |
1451 | case 8: /* MMU TLB control. */ | |
1452 | switch (op2) { | |
1453 | case 0: /* Invalidate all. */ | |
1454 | tlb_flush(env, 0); | |
1455 | break; | |
1456 | case 1: /* Invalidate single TLB entry. */ | |
d4c430a8 | 1457 | tlb_flush_page(env, val & TARGET_PAGE_MASK); |
b5ff1b31 | 1458 | break; |
9ee6e8bb PB |
1459 | case 2: /* Invalidate on ASID. */ |
1460 | tlb_flush(env, val == 0); | |
1461 | break; | |
1462 | case 3: /* Invalidate single entry on MVA. */ | |
1463 | /* ??? This is like case 1, but ignores ASID. */ | |
1464 | tlb_flush(env, 1); | |
1465 | break; | |
b5ff1b31 FB |
1466 | default: |
1467 | goto bad_reg; | |
1468 | } | |
1469 | break; | |
ce819861 | 1470 | case 9: |
c3d2689d AZ |
1471 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1472 | break; | |
ce819861 PB |
1473 | switch (crm) { |
1474 | case 0: /* Cache lockdown. */ | |
9ee6e8bb PB |
1475 | switch (op1) { |
1476 | case 0: /* L1 cache. */ | |
1477 | switch (op2) { | |
1478 | case 0: | |
1479 | env->cp15.c9_data = val; | |
1480 | break; | |
1481 | case 1: | |
1482 | env->cp15.c9_insn = val; | |
1483 | break; | |
1484 | default: | |
1485 | goto bad_reg; | |
1486 | } | |
1487 | break; | |
1488 | case 1: /* L2 cache. */ | |
1489 | /* Ignore writes to L2 lockdown/auxiliary registers. */ | |
1490 | break; | |
1491 | default: | |
1492 | goto bad_reg; | |
1493 | } | |
1494 | break; | |
ce819861 PB |
1495 | case 1: /* TCM memory region registers. */ |
1496 | /* Not implemented. */ | |
1497 | goto bad_reg; | |
b5ff1b31 FB |
1498 | default: |
1499 | goto bad_reg; | |
1500 | } | |
1501 | break; | |
1502 | case 10: /* MMU TLB lockdown. */ | |
1503 | /* ??? TLB lockdown not implemented. */ | |
1504 | break; | |
b5ff1b31 FB |
1505 | case 12: /* Reserved. */ |
1506 | goto bad_reg; | |
1507 | case 13: /* Process ID. */ | |
1508 | switch (op2) { | |
1509 | case 0: | |
d07edbfa PB |
1510 | /* Unlike real hardware the qemu TLB uses virtual addresses, |
1511 | not modified virtual addresses, so this causes a TLB flush. | |
1512 | */ | |
1513 | if (env->cp15.c13_fcse != val) | |
1514 | tlb_flush(env, 1); | |
1515 | env->cp15.c13_fcse = val; | |
b5ff1b31 FB |
1516 | break; |
1517 | case 1: | |
d07edbfa | 1518 | /* This changes the ASID, so do a TLB flush. */ |
ce819861 PB |
1519 | if (env->cp15.c13_context != val |
1520 | && !arm_feature(env, ARM_FEATURE_MPU)) | |
d07edbfa PB |
1521 | tlb_flush(env, 0); |
1522 | env->cp15.c13_context = val; | |
b5ff1b31 FB |
1523 | break; |
1524 | default: | |
1525 | goto bad_reg; | |
1526 | } | |
1527 | break; | |
1528 | case 14: /* Reserved. */ | |
1529 | goto bad_reg; | |
1530 | case 15: /* Implementation specific. */ | |
c1713132 | 1531 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
ce819861 | 1532 | if (op2 == 0 && crm == 1) { |
2e23213f AZ |
1533 | if (env->cp15.c15_cpar != (val & 0x3fff)) { |
1534 | /* Changes cp0 to cp13 behavior, so needs a TB flush. */ | |
1535 | tb_flush(env); | |
1536 | env->cp15.c15_cpar = val & 0x3fff; | |
1537 | } | |
c1713132 AZ |
1538 | break; |
1539 | } | |
1540 | goto bad_reg; | |
1541 | } | |
c3d2689d AZ |
1542 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
1543 | switch (crm) { | |
1544 | case 0: | |
1545 | break; | |
1546 | case 1: /* Set TI925T configuration. */ | |
1547 | env->cp15.c15_ticonfig = val & 0xe7; | |
1548 | env->cp15.c0_cpuid = (val & (1 << 5)) ? /* OS_TYPE bit */ | |
1549 | ARM_CPUID_TI915T : ARM_CPUID_TI925T; | |
1550 | break; | |
1551 | case 2: /* Set I_max. */ | |
1552 | env->cp15.c15_i_max = val; | |
1553 | break; | |
1554 | case 3: /* Set I_min. */ | |
1555 | env->cp15.c15_i_min = val; | |
1556 | break; | |
1557 | case 4: /* Set thread-ID. */ | |
1558 | env->cp15.c15_threadid = val & 0xffff; | |
1559 | break; | |
1560 | case 8: /* Wait-for-interrupt (deprecated). */ | |
1561 | cpu_interrupt(env, CPU_INTERRUPT_HALT); | |
1562 | break; | |
1563 | default: | |
1564 | goto bad_reg; | |
1565 | } | |
1566 | } | |
b5ff1b31 FB |
1567 | break; |
1568 | } | |
1569 | return; | |
1570 | bad_reg: | |
1571 | /* ??? For debugging only. Should raise illegal instruction exception. */ | |
9ee6e8bb PB |
1572 | cpu_abort(env, "Unimplemented cp15 register write (c%d, c%d, {%d, %d})\n", |
1573 | (insn >> 16) & 0xf, crm, op1, op2); | |
b5ff1b31 FB |
1574 | } |
1575 | ||
8984bd2e | 1576 | uint32_t HELPER(get_cp15)(CPUState *env, uint32_t insn) |
b5ff1b31 | 1577 | { |
9ee6e8bb PB |
1578 | int op1; |
1579 | int op2; | |
1580 | int crm; | |
b5ff1b31 | 1581 | |
9ee6e8bb | 1582 | op1 = (insn >> 21) & 7; |
b5ff1b31 | 1583 | op2 = (insn >> 5) & 7; |
c3d2689d | 1584 | crm = insn & 0xf; |
b5ff1b31 FB |
1585 | switch ((insn >> 16) & 0xf) { |
1586 | case 0: /* ID codes. */ | |
9ee6e8bb PB |
1587 | switch (op1) { |
1588 | case 0: | |
1589 | switch (crm) { | |
1590 | case 0: | |
1591 | switch (op2) { | |
1592 | case 0: /* Device ID. */ | |
1593 | return env->cp15.c0_cpuid; | |
1594 | case 1: /* Cache Type. */ | |
1595 | return env->cp15.c0_cachetype; | |
1596 | case 2: /* TCM status. */ | |
1597 | return 0; | |
1598 | case 3: /* TLB type register. */ | |
1599 | return 0; /* No lockable TLB entries. */ | |
1600 | case 5: /* CPU ID */ | |
10055562 PB |
1601 | if (ARM_CPUID(env) == ARM_CPUID_CORTEXA9) { |
1602 | return env->cpu_index | 0x80000900; | |
1603 | } else { | |
1604 | return env->cpu_index; | |
1605 | } | |
9ee6e8bb PB |
1606 | default: |
1607 | goto bad_reg; | |
1608 | } | |
1609 | case 1: | |
1610 | if (!arm_feature(env, ARM_FEATURE_V6)) | |
1611 | goto bad_reg; | |
1612 | return env->cp15.c0_c1[op2]; | |
1613 | case 2: | |
1614 | if (!arm_feature(env, ARM_FEATURE_V6)) | |
1615 | goto bad_reg; | |
1616 | return env->cp15.c0_c2[op2]; | |
1617 | case 3: case 4: case 5: case 6: case 7: | |
1618 | return 0; | |
1619 | default: | |
1620 | goto bad_reg; | |
1621 | } | |
1622 | case 1: | |
1623 | /* These registers aren't documented on arm11 cores. However | |
1624 | Linux looks at them anyway. */ | |
1625 | if (!arm_feature(env, ARM_FEATURE_V6)) | |
1626 | goto bad_reg; | |
1627 | if (crm != 0) | |
1628 | goto bad_reg; | |
a49ea279 PB |
1629 | if (!arm_feature(env, ARM_FEATURE_V7)) |
1630 | return 0; | |
1631 | ||
1632 | switch (op2) { | |
1633 | case 0: | |
1634 | return env->cp15.c0_ccsid[env->cp15.c0_cssel]; | |
1635 | case 1: | |
1636 | return env->cp15.c0_clid; | |
1637 | case 7: | |
1638 | return 0; | |
1639 | } | |
1640 | goto bad_reg; | |
1641 | case 2: | |
1642 | if (op2 != 0 || crm != 0) | |
610c3c8a | 1643 | goto bad_reg; |
a49ea279 | 1644 | return env->cp15.c0_cssel; |
9ee6e8bb PB |
1645 | default: |
1646 | goto bad_reg; | |
b5ff1b31 FB |
1647 | } |
1648 | case 1: /* System configuration. */ | |
c3d2689d AZ |
1649 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1650 | op2 = 0; | |
b5ff1b31 FB |
1651 | switch (op2) { |
1652 | case 0: /* Control register. */ | |
1653 | return env->cp15.c1_sys; | |
1654 | case 1: /* Auxiliary control register. */ | |
c1713132 | 1655 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
610c3c8a | 1656 | return env->cp15.c1_xscaleauxcr; |
9ee6e8bb PB |
1657 | if (!arm_feature(env, ARM_FEATURE_AUXCR)) |
1658 | goto bad_reg; | |
1659 | switch (ARM_CPUID(env)) { | |
1660 | case ARM_CPUID_ARM1026: | |
1661 | return 1; | |
1662 | case ARM_CPUID_ARM1136: | |
827df9f3 | 1663 | case ARM_CPUID_ARM1136_R2: |
9ee6e8bb PB |
1664 | return 7; |
1665 | case ARM_CPUID_ARM11MPCORE: | |
1666 | return 1; | |
1667 | case ARM_CPUID_CORTEXA8: | |
533d177a | 1668 | return 2; |
10055562 PB |
1669 | case ARM_CPUID_CORTEXA9: |
1670 | return 0; | |
9ee6e8bb PB |
1671 | default: |
1672 | goto bad_reg; | |
1673 | } | |
b5ff1b31 | 1674 | case 2: /* Coprocessor access register. */ |
610c3c8a AZ |
1675 | if (arm_feature(env, ARM_FEATURE_XSCALE)) |
1676 | goto bad_reg; | |
b5ff1b31 FB |
1677 | return env->cp15.c1_coproc; |
1678 | default: | |
1679 | goto bad_reg; | |
1680 | } | |
ce819861 PB |
1681 | case 2: /* MMU Page table control / MPU cache control. */ |
1682 | if (arm_feature(env, ARM_FEATURE_MPU)) { | |
1683 | switch (op2) { | |
1684 | case 0: | |
1685 | return env->cp15.c2_data; | |
1686 | break; | |
1687 | case 1: | |
1688 | return env->cp15.c2_insn; | |
1689 | break; | |
1690 | default: | |
1691 | goto bad_reg; | |
1692 | } | |
1693 | } else { | |
9ee6e8bb PB |
1694 | switch (op2) { |
1695 | case 0: | |
1696 | return env->cp15.c2_base0; | |
1697 | case 1: | |
1698 | return env->cp15.c2_base1; | |
1699 | case 2: | |
b2fa1797 | 1700 | return env->cp15.c2_control; |
9ee6e8bb PB |
1701 | default: |
1702 | goto bad_reg; | |
1703 | } | |
1704 | } | |
ce819861 | 1705 | case 3: /* MMU Domain access control / MPU write buffer control. */ |
b5ff1b31 FB |
1706 | return env->cp15.c3; |
1707 | case 4: /* Reserved. */ | |
1708 | goto bad_reg; | |
ce819861 | 1709 | case 5: /* MMU Fault status / MPU access permission. */ |
c3d2689d AZ |
1710 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1711 | op2 = 0; | |
b5ff1b31 FB |
1712 | switch (op2) { |
1713 | case 0: | |
ce819861 PB |
1714 | if (arm_feature(env, ARM_FEATURE_MPU)) |
1715 | return simple_mpu_ap_bits(env->cp15.c5_data); | |
b5ff1b31 FB |
1716 | return env->cp15.c5_data; |
1717 | case 1: | |
ce819861 PB |
1718 | if (arm_feature(env, ARM_FEATURE_MPU)) |
1719 | return simple_mpu_ap_bits(env->cp15.c5_data); | |
1720 | return env->cp15.c5_insn; | |
1721 | case 2: | |
1722 | if (!arm_feature(env, ARM_FEATURE_MPU)) | |
1723 | goto bad_reg; | |
1724 | return env->cp15.c5_data; | |
1725 | case 3: | |
1726 | if (!arm_feature(env, ARM_FEATURE_MPU)) | |
1727 | goto bad_reg; | |
b5ff1b31 FB |
1728 | return env->cp15.c5_insn; |
1729 | default: | |
1730 | goto bad_reg; | |
1731 | } | |
9ee6e8bb | 1732 | case 6: /* MMU Fault address. */ |
ce819861 | 1733 | if (arm_feature(env, ARM_FEATURE_MPU)) { |
9ee6e8bb | 1734 | if (crm >= 8) |
ce819861 | 1735 | goto bad_reg; |
9ee6e8bb | 1736 | return env->cp15.c6_region[crm]; |
ce819861 | 1737 | } else { |
c3d2689d AZ |
1738 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) |
1739 | op2 = 0; | |
9ee6e8bb PB |
1740 | switch (op2) { |
1741 | case 0: | |
1742 | return env->cp15.c6_data; | |
1743 | case 1: | |
1744 | if (arm_feature(env, ARM_FEATURE_V6)) { | |
1745 | /* Watchpoint Fault Adrress. */ | |
1746 | return 0; /* Not implemented. */ | |
1747 | } else { | |
1748 | /* Instruction Fault Adrress. */ | |
1749 | /* Arm9 doesn't have an IFAR, but implementing it anyway | |
1750 | shouldn't do any harm. */ | |
1751 | return env->cp15.c6_insn; | |
1752 | } | |
1753 | case 2: | |
1754 | if (arm_feature(env, ARM_FEATURE_V6)) { | |
1755 | /* Instruction Fault Adrress. */ | |
1756 | return env->cp15.c6_insn; | |
1757 | } else { | |
1758 | goto bad_reg; | |
1759 | } | |
1760 | default: | |
1761 | goto bad_reg; | |
1762 | } | |
b5ff1b31 FB |
1763 | } |
1764 | case 7: /* Cache control. */ | |
6fbe23d5 PB |
1765 | /* FIXME: Should only clear Z flag if destination is r15. */ |
1766 | env->ZF = 0; | |
b5ff1b31 FB |
1767 | return 0; |
1768 | case 8: /* MMU TLB control. */ | |
1769 | goto bad_reg; | |
1770 | case 9: /* Cache lockdown. */ | |
9ee6e8bb PB |
1771 | switch (op1) { |
1772 | case 0: /* L1 cache. */ | |
1773 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) | |
1774 | return 0; | |
1775 | switch (op2) { | |
1776 | case 0: | |
1777 | return env->cp15.c9_data; | |
1778 | case 1: | |
1779 | return env->cp15.c9_insn; | |
1780 | default: | |
1781 | goto bad_reg; | |
1782 | } | |
1783 | case 1: /* L2 cache */ | |
1784 | if (crm != 0) | |
1785 | goto bad_reg; | |
1786 | /* L2 Lockdown and Auxiliary control. */ | |
c3d2689d | 1787 | return 0; |
b5ff1b31 FB |
1788 | default: |
1789 | goto bad_reg; | |
1790 | } | |
1791 | case 10: /* MMU TLB lockdown. */ | |
1792 | /* ??? TLB lockdown not implemented. */ | |
1793 | return 0; | |
1794 | case 11: /* TCM DMA control. */ | |
1795 | case 12: /* Reserved. */ | |
1796 | goto bad_reg; | |
1797 | case 13: /* Process ID. */ | |
1798 | switch (op2) { | |
1799 | case 0: | |
1800 | return env->cp15.c13_fcse; | |
1801 | case 1: | |
1802 | return env->cp15.c13_context; | |
1803 | default: | |
1804 | goto bad_reg; | |
1805 | } | |
1806 | case 14: /* Reserved. */ | |
1807 | goto bad_reg; | |
1808 | case 15: /* Implementation specific. */ | |
c1713132 | 1809 | if (arm_feature(env, ARM_FEATURE_XSCALE)) { |
c3d2689d | 1810 | if (op2 == 0 && crm == 1) |
c1713132 AZ |
1811 | return env->cp15.c15_cpar; |
1812 | ||
1813 | goto bad_reg; | |
1814 | } | |
c3d2689d AZ |
1815 | if (arm_feature(env, ARM_FEATURE_OMAPCP)) { |
1816 | switch (crm) { | |
1817 | case 0: | |
1818 | return 0; | |
1819 | case 1: /* Read TI925T configuration. */ | |
1820 | return env->cp15.c15_ticonfig; | |
1821 | case 2: /* Read I_max. */ | |
1822 | return env->cp15.c15_i_max; | |
1823 | case 3: /* Read I_min. */ | |
1824 | return env->cp15.c15_i_min; | |
1825 | case 4: /* Read thread-ID. */ | |
1826 | return env->cp15.c15_threadid; | |
1827 | case 8: /* TI925T_status */ | |
1828 | return 0; | |
1829 | } | |
827df9f3 AZ |
1830 | /* TODO: Peripheral port remap register: |
1831 | * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt | |
1832 | * controller base address at $rn & ~0xfff and map size of | |
1833 | * 0x200 << ($rn & 0xfff), when MMU is off. */ | |
c3d2689d AZ |
1834 | goto bad_reg; |
1835 | } | |
b5ff1b31 FB |
1836 | return 0; |
1837 | } | |
1838 | bad_reg: | |
1839 | /* ??? For debugging only. Should raise illegal instruction exception. */ | |
9ee6e8bb PB |
1840 | cpu_abort(env, "Unimplemented cp15 register read (c%d, c%d, {%d, %d})\n", |
1841 | (insn >> 16) & 0xf, crm, op1, op2); | |
b5ff1b31 FB |
1842 | return 0; |
1843 | } | |
1844 | ||
b0109805 | 1845 | void HELPER(set_r13_banked)(CPUState *env, uint32_t mode, uint32_t val) |
9ee6e8bb PB |
1846 | { |
1847 | env->banked_r13[bank_number(mode)] = val; | |
1848 | } | |
1849 | ||
b0109805 | 1850 | uint32_t HELPER(get_r13_banked)(CPUState *env, uint32_t mode) |
9ee6e8bb PB |
1851 | { |
1852 | return env->banked_r13[bank_number(mode)]; | |
1853 | } | |
1854 | ||
8984bd2e | 1855 | uint32_t HELPER(v7m_mrs)(CPUState *env, uint32_t reg) |
9ee6e8bb PB |
1856 | { |
1857 | switch (reg) { | |
1858 | case 0: /* APSR */ | |
1859 | return xpsr_read(env) & 0xf8000000; | |
1860 | case 1: /* IAPSR */ | |
1861 | return xpsr_read(env) & 0xf80001ff; | |
1862 | case 2: /* EAPSR */ | |
1863 | return xpsr_read(env) & 0xff00fc00; | |
1864 | case 3: /* xPSR */ | |
1865 | return xpsr_read(env) & 0xff00fdff; | |
1866 | case 5: /* IPSR */ | |
1867 | return xpsr_read(env) & 0x000001ff; | |
1868 | case 6: /* EPSR */ | |
1869 | return xpsr_read(env) & 0x0700fc00; | |
1870 | case 7: /* IEPSR */ | |
1871 | return xpsr_read(env) & 0x0700edff; | |
1872 | case 8: /* MSP */ | |
1873 | return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13]; | |
1874 | case 9: /* PSP */ | |
1875 | return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp; | |
1876 | case 16: /* PRIMASK */ | |
1877 | return (env->uncached_cpsr & CPSR_I) != 0; | |
1878 | case 17: /* FAULTMASK */ | |
1879 | return (env->uncached_cpsr & CPSR_F) != 0; | |
1880 | case 18: /* BASEPRI */ | |
1881 | case 19: /* BASEPRI_MAX */ | |
1882 | return env->v7m.basepri; | |
1883 | case 20: /* CONTROL */ | |
1884 | return env->v7m.control; | |
1885 | default: | |
1886 | /* ??? For debugging only. */ | |
1887 | cpu_abort(env, "Unimplemented system register read (%d)\n", reg); | |
1888 | return 0; | |
1889 | } | |
1890 | } | |
1891 | ||
8984bd2e | 1892 | void HELPER(v7m_msr)(CPUState *env, uint32_t reg, uint32_t val) |
9ee6e8bb PB |
1893 | { |
1894 | switch (reg) { | |
1895 | case 0: /* APSR */ | |
1896 | xpsr_write(env, val, 0xf8000000); | |
1897 | break; | |
1898 | case 1: /* IAPSR */ | |
1899 | xpsr_write(env, val, 0xf8000000); | |
1900 | break; | |
1901 | case 2: /* EAPSR */ | |
1902 | xpsr_write(env, val, 0xfe00fc00); | |
1903 | break; | |
1904 | case 3: /* xPSR */ | |
1905 | xpsr_write(env, val, 0xfe00fc00); | |
1906 | break; | |
1907 | case 5: /* IPSR */ | |
1908 | /* IPSR bits are readonly. */ | |
1909 | break; | |
1910 | case 6: /* EPSR */ | |
1911 | xpsr_write(env, val, 0x0600fc00); | |
1912 | break; | |
1913 | case 7: /* IEPSR */ | |
1914 | xpsr_write(env, val, 0x0600fc00); | |
1915 | break; | |
1916 | case 8: /* MSP */ | |
1917 | if (env->v7m.current_sp) | |
1918 | env->v7m.other_sp = val; | |
1919 | else | |
1920 | env->regs[13] = val; | |
1921 | break; | |
1922 | case 9: /* PSP */ | |
1923 | if (env->v7m.current_sp) | |
1924 | env->regs[13] = val; | |
1925 | else | |
1926 | env->v7m.other_sp = val; | |
1927 | break; | |
1928 | case 16: /* PRIMASK */ | |
1929 | if (val & 1) | |
1930 | env->uncached_cpsr |= CPSR_I; | |
1931 | else | |
1932 | env->uncached_cpsr &= ~CPSR_I; | |
1933 | break; | |
1934 | case 17: /* FAULTMASK */ | |
1935 | if (val & 1) | |
1936 | env->uncached_cpsr |= CPSR_F; | |
1937 | else | |
1938 | env->uncached_cpsr &= ~CPSR_F; | |
1939 | break; | |
1940 | case 18: /* BASEPRI */ | |
1941 | env->v7m.basepri = val & 0xff; | |
1942 | break; | |
1943 | case 19: /* BASEPRI_MAX */ | |
1944 | val &= 0xff; | |
1945 | if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0)) | |
1946 | env->v7m.basepri = val; | |
1947 | break; | |
1948 | case 20: /* CONTROL */ | |
1949 | env->v7m.control = val & 3; | |
1950 | switch_v7m_sp(env, (val & 2) != 0); | |
1951 | break; | |
1952 | default: | |
1953 | /* ??? For debugging only. */ | |
1954 | cpu_abort(env, "Unimplemented system register write (%d)\n", reg); | |
1955 | return; | |
1956 | } | |
1957 | } | |
1958 | ||
c1713132 AZ |
1959 | void cpu_arm_set_cp_io(CPUARMState *env, int cpnum, |
1960 | ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write, | |
1961 | void *opaque) | |
1962 | { | |
1963 | if (cpnum < 0 || cpnum > 14) { | |
1964 | cpu_abort(env, "Bad coprocessor number: %i\n", cpnum); | |
1965 | return; | |
1966 | } | |
1967 | ||
1968 | env->cp[cpnum].cp_read = cp_read; | |
1969 | env->cp[cpnum].cp_write = cp_write; | |
1970 | env->cp[cpnum].opaque = opaque; | |
1971 | } | |
1972 | ||
b5ff1b31 | 1973 | #endif |
6ddbc6e4 PB |
1974 | |
1975 | /* Note that signed overflow is undefined in C. The following routines are | |
1976 | careful to use unsigned types where modulo arithmetic is required. | |
1977 | Failure to do so _will_ break on newer gcc. */ | |
1978 | ||
1979 | /* Signed saturating arithmetic. */ | |
1980 | ||
1654b2d6 | 1981 | /* Perform 16-bit signed saturating addition. */ |
6ddbc6e4 PB |
1982 | static inline uint16_t add16_sat(uint16_t a, uint16_t b) |
1983 | { | |
1984 | uint16_t res; | |
1985 | ||
1986 | res = a + b; | |
1987 | if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { | |
1988 | if (a & 0x8000) | |
1989 | res = 0x8000; | |
1990 | else | |
1991 | res = 0x7fff; | |
1992 | } | |
1993 | return res; | |
1994 | } | |
1995 | ||
1654b2d6 | 1996 | /* Perform 8-bit signed saturating addition. */ |
6ddbc6e4 PB |
1997 | static inline uint8_t add8_sat(uint8_t a, uint8_t b) |
1998 | { | |
1999 | uint8_t res; | |
2000 | ||
2001 | res = a + b; | |
2002 | if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { | |
2003 | if (a & 0x80) | |
2004 | res = 0x80; | |
2005 | else | |
2006 | res = 0x7f; | |
2007 | } | |
2008 | return res; | |
2009 | } | |
2010 | ||
1654b2d6 | 2011 | /* Perform 16-bit signed saturating subtraction. */ |
6ddbc6e4 PB |
2012 | static inline uint16_t sub16_sat(uint16_t a, uint16_t b) |
2013 | { | |
2014 | uint16_t res; | |
2015 | ||
2016 | res = a - b; | |
2017 | if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { | |
2018 | if (a & 0x8000) | |
2019 | res = 0x8000; | |
2020 | else | |
2021 | res = 0x7fff; | |
2022 | } | |
2023 | return res; | |
2024 | } | |
2025 | ||
1654b2d6 | 2026 | /* Perform 8-bit signed saturating subtraction. */ |
6ddbc6e4 PB |
2027 | static inline uint8_t sub8_sat(uint8_t a, uint8_t b) |
2028 | { | |
2029 | uint8_t res; | |
2030 | ||
2031 | res = a - b; | |
2032 | if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { | |
2033 | if (a & 0x80) | |
2034 | res = 0x80; | |
2035 | else | |
2036 | res = 0x7f; | |
2037 | } | |
2038 | return res; | |
2039 | } | |
2040 | ||
2041 | #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); | |
2042 | #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); | |
2043 | #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); | |
2044 | #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); | |
2045 | #define PFX q | |
2046 | ||
2047 | #include "op_addsub.h" | |
2048 | ||
2049 | /* Unsigned saturating arithmetic. */ | |
460a09c1 | 2050 | static inline uint16_t add16_usat(uint16_t a, uint16_t b) |
6ddbc6e4 PB |
2051 | { |
2052 | uint16_t res; | |
2053 | res = a + b; | |
2054 | if (res < a) | |
2055 | res = 0xffff; | |
2056 | return res; | |
2057 | } | |
2058 | ||
460a09c1 | 2059 | static inline uint16_t sub16_usat(uint16_t a, uint16_t b) |
6ddbc6e4 | 2060 | { |
4c4fd3f8 | 2061 | if (a > b) |
6ddbc6e4 PB |
2062 | return a - b; |
2063 | else | |
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | static inline uint8_t add8_usat(uint8_t a, uint8_t b) | |
2068 | { | |
2069 | uint8_t res; | |
2070 | res = a + b; | |
2071 | if (res < a) | |
2072 | res = 0xff; | |
2073 | return res; | |
2074 | } | |
2075 | ||
2076 | static inline uint8_t sub8_usat(uint8_t a, uint8_t b) | |
2077 | { | |
4c4fd3f8 | 2078 | if (a > b) |
6ddbc6e4 PB |
2079 | return a - b; |
2080 | else | |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); | |
2085 | #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); | |
2086 | #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); | |
2087 | #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); | |
2088 | #define PFX uq | |
2089 | ||
2090 | #include "op_addsub.h" | |
2091 | ||
2092 | /* Signed modulo arithmetic. */ | |
2093 | #define SARITH16(a, b, n, op) do { \ | |
2094 | int32_t sum; \ | |
2095 | sum = (int16_t)((uint16_t)(a) op (uint16_t)(b)); \ | |
2096 | RESULT(sum, n, 16); \ | |
2097 | if (sum >= 0) \ | |
2098 | ge |= 3 << (n * 2); \ | |
2099 | } while(0) | |
2100 | ||
2101 | #define SARITH8(a, b, n, op) do { \ | |
2102 | int32_t sum; \ | |
2103 | sum = (int8_t)((uint8_t)(a) op (uint8_t)(b)); \ | |
2104 | RESULT(sum, n, 8); \ | |
2105 | if (sum >= 0) \ | |
2106 | ge |= 1 << n; \ | |
2107 | } while(0) | |
2108 | ||
2109 | ||
2110 | #define ADD16(a, b, n) SARITH16(a, b, n, +) | |
2111 | #define SUB16(a, b, n) SARITH16(a, b, n, -) | |
2112 | #define ADD8(a, b, n) SARITH8(a, b, n, +) | |
2113 | #define SUB8(a, b, n) SARITH8(a, b, n, -) | |
2114 | #define PFX s | |
2115 | #define ARITH_GE | |
2116 | ||
2117 | #include "op_addsub.h" | |
2118 | ||
2119 | /* Unsigned modulo arithmetic. */ | |
2120 | #define ADD16(a, b, n) do { \ | |
2121 | uint32_t sum; \ | |
2122 | sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ | |
2123 | RESULT(sum, n, 16); \ | |
a87aa10b | 2124 | if ((sum >> 16) == 1) \ |
6ddbc6e4 PB |
2125 | ge |= 3 << (n * 2); \ |
2126 | } while(0) | |
2127 | ||
2128 | #define ADD8(a, b, n) do { \ | |
2129 | uint32_t sum; \ | |
2130 | sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ | |
2131 | RESULT(sum, n, 8); \ | |
a87aa10b AZ |
2132 | if ((sum >> 8) == 1) \ |
2133 | ge |= 1 << n; \ | |
6ddbc6e4 PB |
2134 | } while(0) |
2135 | ||
2136 | #define SUB16(a, b, n) do { \ | |
2137 | uint32_t sum; \ | |
2138 | sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ | |
2139 | RESULT(sum, n, 16); \ | |
2140 | if ((sum >> 16) == 0) \ | |
2141 | ge |= 3 << (n * 2); \ | |
2142 | } while(0) | |
2143 | ||
2144 | #define SUB8(a, b, n) do { \ | |
2145 | uint32_t sum; \ | |
2146 | sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ | |
2147 | RESULT(sum, n, 8); \ | |
2148 | if ((sum >> 8) == 0) \ | |
a87aa10b | 2149 | ge |= 1 << n; \ |
6ddbc6e4 PB |
2150 | } while(0) |
2151 | ||
2152 | #define PFX u | |
2153 | #define ARITH_GE | |
2154 | ||
2155 | #include "op_addsub.h" | |
2156 | ||
2157 | /* Halved signed arithmetic. */ | |
2158 | #define ADD16(a, b, n) \ | |
2159 | RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) | |
2160 | #define SUB16(a, b, n) \ | |
2161 | RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) | |
2162 | #define ADD8(a, b, n) \ | |
2163 | RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) | |
2164 | #define SUB8(a, b, n) \ | |
2165 | RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) | |
2166 | #define PFX sh | |
2167 | ||
2168 | #include "op_addsub.h" | |
2169 | ||
2170 | /* Halved unsigned arithmetic. */ | |
2171 | #define ADD16(a, b, n) \ | |
2172 | RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) | |
2173 | #define SUB16(a, b, n) \ | |
2174 | RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) | |
2175 | #define ADD8(a, b, n) \ | |
2176 | RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) | |
2177 | #define SUB8(a, b, n) \ | |
2178 | RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) | |
2179 | #define PFX uh | |
2180 | ||
2181 | #include "op_addsub.h" | |
2182 | ||
2183 | static inline uint8_t do_usad(uint8_t a, uint8_t b) | |
2184 | { | |
2185 | if (a > b) | |
2186 | return a - b; | |
2187 | else | |
2188 | return b - a; | |
2189 | } | |
2190 | ||
2191 | /* Unsigned sum of absolute byte differences. */ | |
2192 | uint32_t HELPER(usad8)(uint32_t a, uint32_t b) | |
2193 | { | |
2194 | uint32_t sum; | |
2195 | sum = do_usad(a, b); | |
2196 | sum += do_usad(a >> 8, b >> 8); | |
2197 | sum += do_usad(a >> 16, b >>16); | |
2198 | sum += do_usad(a >> 24, b >> 24); | |
2199 | return sum; | |
2200 | } | |
2201 | ||
2202 | /* For ARMv6 SEL instruction. */ | |
2203 | uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b) | |
2204 | { | |
2205 | uint32_t mask; | |
2206 | ||
2207 | mask = 0; | |
2208 | if (flags & 1) | |
2209 | mask |= 0xff; | |
2210 | if (flags & 2) | |
2211 | mask |= 0xff00; | |
2212 | if (flags & 4) | |
2213 | mask |= 0xff0000; | |
2214 | if (flags & 8) | |
2215 | mask |= 0xff000000; | |
2216 | return (a & mask) | (b & ~mask); | |
2217 | } | |
2218 | ||
5e3f878a PB |
2219 | uint32_t HELPER(logicq_cc)(uint64_t val) |
2220 | { | |
2221 | return (val >> 32) | (val != 0); | |
2222 | } | |
4373f3ce PB |
2223 | |
2224 | /* VFP support. We follow the convention used for VFP instrunctions: | |
2225 | Single precition routines have a "s" suffix, double precision a | |
2226 | "d" suffix. */ | |
2227 | ||
2228 | /* Convert host exception flags to vfp form. */ | |
2229 | static inline int vfp_exceptbits_from_host(int host_bits) | |
2230 | { | |
2231 | int target_bits = 0; | |
2232 | ||
2233 | if (host_bits & float_flag_invalid) | |
2234 | target_bits |= 1; | |
2235 | if (host_bits & float_flag_divbyzero) | |
2236 | target_bits |= 2; | |
2237 | if (host_bits & float_flag_overflow) | |
2238 | target_bits |= 4; | |
2239 | if (host_bits & float_flag_underflow) | |
2240 | target_bits |= 8; | |
2241 | if (host_bits & float_flag_inexact) | |
2242 | target_bits |= 0x10; | |
2243 | return target_bits; | |
2244 | } | |
2245 | ||
2246 | uint32_t HELPER(vfp_get_fpscr)(CPUState *env) | |
2247 | { | |
2248 | int i; | |
2249 | uint32_t fpscr; | |
2250 | ||
2251 | fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff) | |
2252 | | (env->vfp.vec_len << 16) | |
2253 | | (env->vfp.vec_stride << 20); | |
2254 | i = get_float_exception_flags(&env->vfp.fp_status); | |
2255 | fpscr |= vfp_exceptbits_from_host(i); | |
2256 | return fpscr; | |
2257 | } | |
2258 | ||
01653295 PM |
2259 | uint32_t vfp_get_fpscr(CPUState *env) |
2260 | { | |
2261 | return HELPER(vfp_get_fpscr)(env); | |
2262 | } | |
2263 | ||
4373f3ce PB |
2264 | /* Convert vfp exception flags to target form. */ |
2265 | static inline int vfp_exceptbits_to_host(int target_bits) | |
2266 | { | |
2267 | int host_bits = 0; | |
2268 | ||
2269 | if (target_bits & 1) | |
2270 | host_bits |= float_flag_invalid; | |
2271 | if (target_bits & 2) | |
2272 | host_bits |= float_flag_divbyzero; | |
2273 | if (target_bits & 4) | |
2274 | host_bits |= float_flag_overflow; | |
2275 | if (target_bits & 8) | |
2276 | host_bits |= float_flag_underflow; | |
2277 | if (target_bits & 0x10) | |
2278 | host_bits |= float_flag_inexact; | |
2279 | return host_bits; | |
2280 | } | |
2281 | ||
2282 | void HELPER(vfp_set_fpscr)(CPUState *env, uint32_t val) | |
2283 | { | |
2284 | int i; | |
2285 | uint32_t changed; | |
2286 | ||
2287 | changed = env->vfp.xregs[ARM_VFP_FPSCR]; | |
2288 | env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff); | |
2289 | env->vfp.vec_len = (val >> 16) & 7; | |
2290 | env->vfp.vec_stride = (val >> 20) & 3; | |
2291 | ||
2292 | changed ^= val; | |
2293 | if (changed & (3 << 22)) { | |
2294 | i = (val >> 22) & 3; | |
2295 | switch (i) { | |
2296 | case 0: | |
2297 | i = float_round_nearest_even; | |
2298 | break; | |
2299 | case 1: | |
2300 | i = float_round_up; | |
2301 | break; | |
2302 | case 2: | |
2303 | i = float_round_down; | |
2304 | break; | |
2305 | case 3: | |
2306 | i = float_round_to_zero; | |
2307 | break; | |
2308 | } | |
2309 | set_float_rounding_mode(i, &env->vfp.fp_status); | |
2310 | } | |
fe76d976 PB |
2311 | if (changed & (1 << 24)) |
2312 | set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); | |
5c7908ed PB |
2313 | if (changed & (1 << 25)) |
2314 | set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status); | |
4373f3ce PB |
2315 | |
2316 | i = vfp_exceptbits_to_host((val >> 8) & 0x1f); | |
2317 | set_float_exception_flags(i, &env->vfp.fp_status); | |
4373f3ce PB |
2318 | } |
2319 | ||
01653295 PM |
2320 | void vfp_set_fpscr(CPUState *env, uint32_t val) |
2321 | { | |
2322 | HELPER(vfp_set_fpscr)(env, val); | |
2323 | } | |
2324 | ||
4373f3ce PB |
2325 | #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p)) |
2326 | ||
2327 | #define VFP_BINOP(name) \ | |
2328 | float32 VFP_HELPER(name, s)(float32 a, float32 b, CPUState *env) \ | |
2329 | { \ | |
2330 | return float32_ ## name (a, b, &env->vfp.fp_status); \ | |
2331 | } \ | |
2332 | float64 VFP_HELPER(name, d)(float64 a, float64 b, CPUState *env) \ | |
2333 | { \ | |
2334 | return float64_ ## name (a, b, &env->vfp.fp_status); \ | |
2335 | } | |
2336 | VFP_BINOP(add) | |
2337 | VFP_BINOP(sub) | |
2338 | VFP_BINOP(mul) | |
2339 | VFP_BINOP(div) | |
2340 | #undef VFP_BINOP | |
2341 | ||
2342 | float32 VFP_HELPER(neg, s)(float32 a) | |
2343 | { | |
2344 | return float32_chs(a); | |
2345 | } | |
2346 | ||
2347 | float64 VFP_HELPER(neg, d)(float64 a) | |
2348 | { | |
66230e0d | 2349 | return float64_chs(a); |
4373f3ce PB |
2350 | } |
2351 | ||
2352 | float32 VFP_HELPER(abs, s)(float32 a) | |
2353 | { | |
2354 | return float32_abs(a); | |
2355 | } | |
2356 | ||
2357 | float64 VFP_HELPER(abs, d)(float64 a) | |
2358 | { | |
66230e0d | 2359 | return float64_abs(a); |
4373f3ce PB |
2360 | } |
2361 | ||
2362 | float32 VFP_HELPER(sqrt, s)(float32 a, CPUState *env) | |
2363 | { | |
2364 | return float32_sqrt(a, &env->vfp.fp_status); | |
2365 | } | |
2366 | ||
2367 | float64 VFP_HELPER(sqrt, d)(float64 a, CPUState *env) | |
2368 | { | |
2369 | return float64_sqrt(a, &env->vfp.fp_status); | |
2370 | } | |
2371 | ||
2372 | /* XXX: check quiet/signaling case */ | |
2373 | #define DO_VFP_cmp(p, type) \ | |
2374 | void VFP_HELPER(cmp, p)(type a, type b, CPUState *env) \ | |
2375 | { \ | |
2376 | uint32_t flags; \ | |
2377 | switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \ | |
2378 | case 0: flags = 0x6; break; \ | |
2379 | case -1: flags = 0x8; break; \ | |
2380 | case 1: flags = 0x2; break; \ | |
2381 | default: case 2: flags = 0x3; break; \ | |
2382 | } \ | |
2383 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ | |
2384 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ | |
2385 | } \ | |
2386 | void VFP_HELPER(cmpe, p)(type a, type b, CPUState *env) \ | |
2387 | { \ | |
2388 | uint32_t flags; \ | |
2389 | switch(type ## _compare(a, b, &env->vfp.fp_status)) { \ | |
2390 | case 0: flags = 0x6; break; \ | |
2391 | case -1: flags = 0x8; break; \ | |
2392 | case 1: flags = 0x2; break; \ | |
2393 | default: case 2: flags = 0x3; break; \ | |
2394 | } \ | |
2395 | env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ | |
2396 | | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ | |
2397 | } | |
2398 | DO_VFP_cmp(s, float32) | |
2399 | DO_VFP_cmp(d, float64) | |
2400 | #undef DO_VFP_cmp | |
2401 | ||
2402 | /* Helper routines to perform bitwise copies between float and int. */ | |
2403 | static inline float32 vfp_itos(uint32_t i) | |
2404 | { | |
2405 | union { | |
2406 | uint32_t i; | |
2407 | float32 s; | |
2408 | } v; | |
2409 | ||
2410 | v.i = i; | |
2411 | return v.s; | |
2412 | } | |
2413 | ||
2414 | static inline uint32_t vfp_stoi(float32 s) | |
2415 | { | |
2416 | union { | |
2417 | uint32_t i; | |
2418 | float32 s; | |
2419 | } v; | |
2420 | ||
2421 | v.s = s; | |
2422 | return v.i; | |
2423 | } | |
2424 | ||
2425 | static inline float64 vfp_itod(uint64_t i) | |
2426 | { | |
2427 | union { | |
2428 | uint64_t i; | |
2429 | float64 d; | |
2430 | } v; | |
2431 | ||
2432 | v.i = i; | |
2433 | return v.d; | |
2434 | } | |
2435 | ||
2436 | static inline uint64_t vfp_dtoi(float64 d) | |
2437 | { | |
2438 | union { | |
2439 | uint64_t i; | |
2440 | float64 d; | |
2441 | } v; | |
2442 | ||
2443 | v.d = d; | |
2444 | return v.i; | |
2445 | } | |
2446 | ||
2447 | /* Integer to float conversion. */ | |
2448 | float32 VFP_HELPER(uito, s)(float32 x, CPUState *env) | |
2449 | { | |
2450 | return uint32_to_float32(vfp_stoi(x), &env->vfp.fp_status); | |
2451 | } | |
2452 | ||
2453 | float64 VFP_HELPER(uito, d)(float32 x, CPUState *env) | |
2454 | { | |
2455 | return uint32_to_float64(vfp_stoi(x), &env->vfp.fp_status); | |
2456 | } | |
2457 | ||
2458 | float32 VFP_HELPER(sito, s)(float32 x, CPUState *env) | |
2459 | { | |
2460 | return int32_to_float32(vfp_stoi(x), &env->vfp.fp_status); | |
2461 | } | |
2462 | ||
2463 | float64 VFP_HELPER(sito, d)(float32 x, CPUState *env) | |
2464 | { | |
2465 | return int32_to_float64(vfp_stoi(x), &env->vfp.fp_status); | |
2466 | } | |
2467 | ||
2468 | /* Float to integer conversion. */ | |
2469 | float32 VFP_HELPER(toui, s)(float32 x, CPUState *env) | |
2470 | { | |
09d9487f PM |
2471 | if (float32_is_any_nan(x)) { |
2472 | return float32_zero; | |
2473 | } | |
4373f3ce PB |
2474 | return vfp_itos(float32_to_uint32(x, &env->vfp.fp_status)); |
2475 | } | |
2476 | ||
2477 | float32 VFP_HELPER(toui, d)(float64 x, CPUState *env) | |
2478 | { | |
09d9487f PM |
2479 | if (float64_is_any_nan(x)) { |
2480 | return float32_zero; | |
2481 | } | |
4373f3ce PB |
2482 | return vfp_itos(float64_to_uint32(x, &env->vfp.fp_status)); |
2483 | } | |
2484 | ||
2485 | float32 VFP_HELPER(tosi, s)(float32 x, CPUState *env) | |
2486 | { | |
09d9487f PM |
2487 | if (float32_is_any_nan(x)) { |
2488 | return float32_zero; | |
2489 | } | |
4373f3ce PB |
2490 | return vfp_itos(float32_to_int32(x, &env->vfp.fp_status)); |
2491 | } | |
2492 | ||
2493 | float32 VFP_HELPER(tosi, d)(float64 x, CPUState *env) | |
2494 | { | |
09d9487f PM |
2495 | if (float64_is_any_nan(x)) { |
2496 | return float32_zero; | |
2497 | } | |
4373f3ce PB |
2498 | return vfp_itos(float64_to_int32(x, &env->vfp.fp_status)); |
2499 | } | |
2500 | ||
2501 | float32 VFP_HELPER(touiz, s)(float32 x, CPUState *env) | |
2502 | { | |
09d9487f PM |
2503 | if (float32_is_any_nan(x)) { |
2504 | return float32_zero; | |
2505 | } | |
4373f3ce PB |
2506 | return vfp_itos(float32_to_uint32_round_to_zero(x, &env->vfp.fp_status)); |
2507 | } | |
2508 | ||
2509 | float32 VFP_HELPER(touiz, d)(float64 x, CPUState *env) | |
2510 | { | |
09d9487f PM |
2511 | if (float64_is_any_nan(x)) { |
2512 | return float32_zero; | |
2513 | } | |
4373f3ce PB |
2514 | return vfp_itos(float64_to_uint32_round_to_zero(x, &env->vfp.fp_status)); |
2515 | } | |
2516 | ||
2517 | float32 VFP_HELPER(tosiz, s)(float32 x, CPUState *env) | |
2518 | { | |
09d9487f PM |
2519 | if (float32_is_any_nan(x)) { |
2520 | return float32_zero; | |
2521 | } | |
4373f3ce PB |
2522 | return vfp_itos(float32_to_int32_round_to_zero(x, &env->vfp.fp_status)); |
2523 | } | |
2524 | ||
2525 | float32 VFP_HELPER(tosiz, d)(float64 x, CPUState *env) | |
2526 | { | |
09d9487f PM |
2527 | if (float64_is_any_nan(x)) { |
2528 | return float32_zero; | |
2529 | } | |
4373f3ce PB |
2530 | return vfp_itos(float64_to_int32_round_to_zero(x, &env->vfp.fp_status)); |
2531 | } | |
2532 | ||
2533 | /* floating point conversion */ | |
2534 | float64 VFP_HELPER(fcvtd, s)(float32 x, CPUState *env) | |
2535 | { | |
2d627737 PM |
2536 | float64 r = float32_to_float64(x, &env->vfp.fp_status); |
2537 | /* ARM requires that S<->D conversion of any kind of NaN generates | |
2538 | * a quiet NaN by forcing the most significant frac bit to 1. | |
2539 | */ | |
2540 | return float64_maybe_silence_nan(r); | |
4373f3ce PB |
2541 | } |
2542 | ||
2543 | float32 VFP_HELPER(fcvts, d)(float64 x, CPUState *env) | |
2544 | { | |
2d627737 PM |
2545 | float32 r = float64_to_float32(x, &env->vfp.fp_status); |
2546 | /* ARM requires that S<->D conversion of any kind of NaN generates | |
2547 | * a quiet NaN by forcing the most significant frac bit to 1. | |
2548 | */ | |
2549 | return float32_maybe_silence_nan(r); | |
4373f3ce PB |
2550 | } |
2551 | ||
2552 | /* VFP3 fixed point conversion. */ | |
2553 | #define VFP_CONV_FIX(name, p, ftype, itype, sign) \ | |
2554 | ftype VFP_HELPER(name##to, p)(ftype x, uint32_t shift, CPUState *env) \ | |
2555 | { \ | |
2556 | ftype tmp; \ | |
26a5e69a | 2557 | tmp = sign##int32_to_##ftype ((itype##_t)vfp_##p##toi(x), \ |
4373f3ce | 2558 | &env->vfp.fp_status); \ |
644ad806 | 2559 | return ftype##_scalbn(tmp, -(int)shift, &env->vfp.fp_status); \ |
4373f3ce PB |
2560 | } \ |
2561 | ftype VFP_HELPER(to##name, p)(ftype x, uint32_t shift, CPUState *env) \ | |
2562 | { \ | |
2563 | ftype tmp; \ | |
09d9487f PM |
2564 | if (ftype##_is_any_nan(x)) { \ |
2565 | return ftype##_zero; \ | |
2566 | } \ | |
4373f3ce | 2567 | tmp = ftype##_scalbn(x, shift, &env->vfp.fp_status); \ |
72f24d15 | 2568 | return vfp_ito##p(ftype##_to_##itype##_round_to_zero(tmp, \ |
4373f3ce PB |
2569 | &env->vfp.fp_status)); \ |
2570 | } | |
2571 | ||
2572 | VFP_CONV_FIX(sh, d, float64, int16, ) | |
2573 | VFP_CONV_FIX(sl, d, float64, int32, ) | |
2574 | VFP_CONV_FIX(uh, d, float64, uint16, u) | |
2575 | VFP_CONV_FIX(ul, d, float64, uint32, u) | |
2576 | VFP_CONV_FIX(sh, s, float32, int16, ) | |
2577 | VFP_CONV_FIX(sl, s, float32, int32, ) | |
2578 | VFP_CONV_FIX(uh, s, float32, uint16, u) | |
2579 | VFP_CONV_FIX(ul, s, float32, uint32, u) | |
2580 | #undef VFP_CONV_FIX | |
2581 | ||
60011498 PB |
2582 | /* Half precision conversions. */ |
2583 | float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUState *env) | |
2584 | { | |
2585 | float_status *s = &env->vfp.fp_status; | |
2586 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; | |
2587 | return float16_to_float32(a, ieee, s); | |
2588 | } | |
2589 | ||
2590 | uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUState *env) | |
2591 | { | |
2592 | float_status *s = &env->vfp.fp_status; | |
2593 | int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; | |
2594 | return float32_to_float16(a, ieee, s); | |
2595 | } | |
2596 | ||
4373f3ce PB |
2597 | float32 HELPER(recps_f32)(float32 a, float32 b, CPUState *env) |
2598 | { | |
2599 | float_status *s = &env->vfp.fp_status; | |
2600 | float32 two = int32_to_float32(2, s); | |
2601 | return float32_sub(two, float32_mul(a, b, s), s); | |
2602 | } | |
2603 | ||
2604 | float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUState *env) | |
2605 | { | |
2606 | float_status *s = &env->vfp.fp_status; | |
2607 | float32 three = int32_to_float32(3, s); | |
2608 | return float32_sub(three, float32_mul(a, b, s), s); | |
2609 | } | |
2610 | ||
8f8e3aa4 PB |
2611 | /* NEON helpers. */ |
2612 | ||
4373f3ce PB |
2613 | /* TODO: The architecture specifies the value that the estimate functions |
2614 | should return. We return the exact reciprocal/root instead. */ | |
2615 | float32 HELPER(recpe_f32)(float32 a, CPUState *env) | |
2616 | { | |
2617 | float_status *s = &env->vfp.fp_status; | |
2618 | float32 one = int32_to_float32(1, s); | |
2619 | return float32_div(one, a, s); | |
2620 | } | |
2621 | ||
2622 | float32 HELPER(rsqrte_f32)(float32 a, CPUState *env) | |
2623 | { | |
2624 | float_status *s = &env->vfp.fp_status; | |
2625 | float32 one = int32_to_float32(1, s); | |
2626 | return float32_div(one, float32_sqrt(a, s), s); | |
2627 | } | |
2628 | ||
2629 | uint32_t HELPER(recpe_u32)(uint32_t a, CPUState *env) | |
2630 | { | |
2631 | float_status *s = &env->vfp.fp_status; | |
2632 | float32 tmp; | |
2633 | tmp = int32_to_float32(a, s); | |
2634 | tmp = float32_scalbn(tmp, -32, s); | |
2635 | tmp = helper_recpe_f32(tmp, env); | |
2636 | tmp = float32_scalbn(tmp, 31, s); | |
2637 | return float32_to_int32(tmp, s); | |
2638 | } | |
2639 | ||
2640 | uint32_t HELPER(rsqrte_u32)(uint32_t a, CPUState *env) | |
2641 | { | |
2642 | float_status *s = &env->vfp.fp_status; | |
2643 | float32 tmp; | |
2644 | tmp = int32_to_float32(a, s); | |
2645 | tmp = float32_scalbn(tmp, -32, s); | |
2646 | tmp = helper_rsqrte_f32(tmp, env); | |
2647 | tmp = float32_scalbn(tmp, 31, s); | |
2648 | return float32_to_int32(tmp, s); | |
2649 | } | |
fe1479c3 PB |
2650 | |
2651 | void HELPER(set_teecr)(CPUState *env, uint32_t val) | |
2652 | { | |
2653 | val &= 1; | |
2654 | if (env->teecr != val) { | |
2655 | env->teecr = val; | |
2656 | tb_flush(env); | |
2657 | } | |
2658 | } |