linux-user, scripts: add a script to update syscall.tbl
[qemu.git] / target / s390x / helper.c
1 /*
2 * S/390 helpers
3 *
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2011 Alexander Graf
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "qemu/osdep.h"
22 #include "cpu.h"
23 #include "internal.h"
24 #include "exec/gdbstub.h"
25 #include "qemu/timer.h"
26 #include "qemu/qemu-print.h"
27 #include "hw/s390x/ioinst.h"
28 #include "sysemu/hw_accel.h"
29 #include "sysemu/runstate.h"
30 #ifndef CONFIG_USER_ONLY
31 #include "sysemu/tcg.h"
32 #endif
33
34 #ifndef CONFIG_USER_ONLY
35 void s390x_tod_timer(void *opaque)
36 {
37 cpu_inject_clock_comparator((S390CPU *) opaque);
38 }
39
40 void s390x_cpu_timer(void *opaque)
41 {
42 cpu_inject_cpu_timer((S390CPU *) opaque);
43 }
44 #endif
45
46 #ifndef CONFIG_USER_ONLY
47
48 hwaddr s390_cpu_get_phys_page_debug(CPUState *cs, vaddr vaddr)
49 {
50 S390CPU *cpu = S390_CPU(cs);
51 CPUS390XState *env = &cpu->env;
52 target_ulong raddr;
53 int prot;
54 uint64_t asc = env->psw.mask & PSW_MASK_ASC;
55 uint64_t tec;
56
57 /* 31-Bit mode */
58 if (!(env->psw.mask & PSW_MASK_64)) {
59 vaddr &= 0x7fffffff;
60 }
61
62 /* We want to read the code (e.g., see what we are single-stepping).*/
63 if (asc != PSW_ASC_HOME) {
64 asc = PSW_ASC_PRIMARY;
65 }
66
67 /*
68 * We want to read code even if IEP is active. Use MMU_DATA_LOAD instead
69 * of MMU_INST_FETCH.
70 */
71 if (mmu_translate(env, vaddr, MMU_DATA_LOAD, asc, &raddr, &prot, &tec)) {
72 return -1;
73 }
74 return raddr;
75 }
76
77 hwaddr s390_cpu_get_phys_addr_debug(CPUState *cs, vaddr vaddr)
78 {
79 hwaddr phys_addr;
80 target_ulong page;
81
82 page = vaddr & TARGET_PAGE_MASK;
83 phys_addr = cpu_get_phys_page_debug(cs, page);
84 phys_addr += (vaddr & ~TARGET_PAGE_MASK);
85
86 return phys_addr;
87 }
88
89 static inline bool is_special_wait_psw(uint64_t psw_addr)
90 {
91 /* signal quiesce */
92 return (psw_addr & 0xfffUL) == 0xfffUL;
93 }
94
95 void s390_handle_wait(S390CPU *cpu)
96 {
97 CPUState *cs = CPU(cpu);
98
99 if (s390_cpu_halt(cpu) == 0) {
100 #ifndef CONFIG_USER_ONLY
101 if (is_special_wait_psw(cpu->env.psw.addr)) {
102 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
103 } else {
104 cpu->env.crash_reason = S390_CRASH_REASON_DISABLED_WAIT;
105 qemu_system_guest_panicked(cpu_get_crash_info(cs));
106 }
107 #endif
108 }
109 }
110
111 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr)
112 {
113 uint64_t old_mask = env->psw.mask;
114
115 env->psw.addr = addr;
116 env->psw.mask = mask;
117
118 /* KVM will handle all WAITs and trigger a WAIT exit on disabled_wait */
119 if (!tcg_enabled()) {
120 return;
121 }
122 env->cc_op = (mask >> 44) & 3;
123
124 if ((old_mask ^ mask) & PSW_MASK_PER) {
125 s390_cpu_recompute_watchpoints(env_cpu(env));
126 }
127
128 if (mask & PSW_MASK_WAIT) {
129 s390_handle_wait(env_archcpu(env));
130 }
131 }
132
133 uint64_t get_psw_mask(CPUS390XState *env)
134 {
135 uint64_t r = env->psw.mask;
136
137 if (tcg_enabled()) {
138 env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst,
139 env->cc_vr);
140
141 r &= ~PSW_MASK_CC;
142 assert(!(env->cc_op & ~3));
143 r |= (uint64_t)env->cc_op << 44;
144 }
145
146 return r;
147 }
148
149 LowCore *cpu_map_lowcore(CPUS390XState *env)
150 {
151 LowCore *lowcore;
152 hwaddr len = sizeof(LowCore);
153
154 lowcore = cpu_physical_memory_map(env->psa, &len, true);
155
156 if (len < sizeof(LowCore)) {
157 cpu_abort(env_cpu(env), "Could not map lowcore\n");
158 }
159
160 return lowcore;
161 }
162
163 void cpu_unmap_lowcore(LowCore *lowcore)
164 {
165 cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore));
166 }
167
168 void do_restart_interrupt(CPUS390XState *env)
169 {
170 uint64_t mask, addr;
171 LowCore *lowcore;
172
173 lowcore = cpu_map_lowcore(env);
174
175 lowcore->restart_old_psw.mask = cpu_to_be64(get_psw_mask(env));
176 lowcore->restart_old_psw.addr = cpu_to_be64(env->psw.addr);
177 mask = be64_to_cpu(lowcore->restart_new_psw.mask);
178 addr = be64_to_cpu(lowcore->restart_new_psw.addr);
179
180 cpu_unmap_lowcore(lowcore);
181 env->pending_int &= ~INTERRUPT_RESTART;
182
183 load_psw(env, mask, addr);
184 }
185
186 void s390_cpu_recompute_watchpoints(CPUState *cs)
187 {
188 const int wp_flags = BP_CPU | BP_MEM_WRITE | BP_STOP_BEFORE_ACCESS;
189 S390CPU *cpu = S390_CPU(cs);
190 CPUS390XState *env = &cpu->env;
191
192 /* We are called when the watchpoints have changed. First
193 remove them all. */
194 cpu_watchpoint_remove_all(cs, BP_CPU);
195
196 /* Return if PER is not enabled */
197 if (!(env->psw.mask & PSW_MASK_PER)) {
198 return;
199 }
200
201 /* Return if storage-alteration event is not enabled. */
202 if (!(env->cregs[9] & PER_CR9_EVENT_STORE)) {
203 return;
204 }
205
206 if (env->cregs[10] == 0 && env->cregs[11] == -1LL) {
207 /* We can't create a watchoint spanning the whole memory range, so
208 split it in two parts. */
209 cpu_watchpoint_insert(cs, 0, 1ULL << 63, wp_flags, NULL);
210 cpu_watchpoint_insert(cs, 1ULL << 63, 1ULL << 63, wp_flags, NULL);
211 } else if (env->cregs[10] > env->cregs[11]) {
212 /* The address range loops, create two watchpoints. */
213 cpu_watchpoint_insert(cs, env->cregs[10], -env->cregs[10],
214 wp_flags, NULL);
215 cpu_watchpoint_insert(cs, 0, env->cregs[11] + 1, wp_flags, NULL);
216
217 } else {
218 /* Default case, create a single watchpoint. */
219 cpu_watchpoint_insert(cs, env->cregs[10],
220 env->cregs[11] - env->cregs[10] + 1,
221 wp_flags, NULL);
222 }
223 }
224
225 typedef struct SigpSaveArea {
226 uint64_t fprs[16]; /* 0x0000 */
227 uint64_t grs[16]; /* 0x0080 */
228 PSW psw; /* 0x0100 */
229 uint8_t pad_0x0110[0x0118 - 0x0110]; /* 0x0110 */
230 uint32_t prefix; /* 0x0118 */
231 uint32_t fpc; /* 0x011c */
232 uint8_t pad_0x0120[0x0124 - 0x0120]; /* 0x0120 */
233 uint32_t todpr; /* 0x0124 */
234 uint64_t cputm; /* 0x0128 */
235 uint64_t ckc; /* 0x0130 */
236 uint8_t pad_0x0138[0x0140 - 0x0138]; /* 0x0138 */
237 uint32_t ars[16]; /* 0x0140 */
238 uint64_t crs[16]; /* 0x0384 */
239 } SigpSaveArea;
240 QEMU_BUILD_BUG_ON(sizeof(SigpSaveArea) != 512);
241
242 int s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
243 {
244 static const uint8_t ar_id = 1;
245 SigpSaveArea *sa;
246 hwaddr len = sizeof(*sa);
247 int i;
248
249 sa = cpu_physical_memory_map(addr, &len, true);
250 if (!sa) {
251 return -EFAULT;
252 }
253 if (len != sizeof(*sa)) {
254 cpu_physical_memory_unmap(sa, len, 1, 0);
255 return -EFAULT;
256 }
257
258 if (store_arch) {
259 cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
260 }
261 for (i = 0; i < 16; ++i) {
262 sa->fprs[i] = cpu_to_be64(*get_freg(&cpu->env, i));
263 }
264 for (i = 0; i < 16; ++i) {
265 sa->grs[i] = cpu_to_be64(cpu->env.regs[i]);
266 }
267 sa->psw.addr = cpu_to_be64(cpu->env.psw.addr);
268 sa->psw.mask = cpu_to_be64(get_psw_mask(&cpu->env));
269 sa->prefix = cpu_to_be32(cpu->env.psa);
270 sa->fpc = cpu_to_be32(cpu->env.fpc);
271 sa->todpr = cpu_to_be32(cpu->env.todpr);
272 sa->cputm = cpu_to_be64(cpu->env.cputm);
273 sa->ckc = cpu_to_be64(cpu->env.ckc >> 8);
274 for (i = 0; i < 16; ++i) {
275 sa->ars[i] = cpu_to_be32(cpu->env.aregs[i]);
276 }
277 for (i = 0; i < 16; ++i) {
278 sa->crs[i] = cpu_to_be64(cpu->env.cregs[i]);
279 }
280
281 cpu_physical_memory_unmap(sa, len, 1, len);
282
283 return 0;
284 }
285
286 typedef struct SigpAdtlSaveArea {
287 uint64_t vregs[32][2]; /* 0x0000 */
288 uint8_t pad_0x0200[0x0400 - 0x0200]; /* 0x0200 */
289 uint64_t gscb[4]; /* 0x0400 */
290 uint8_t pad_0x0420[0x1000 - 0x0420]; /* 0x0420 */
291 } SigpAdtlSaveArea;
292 QEMU_BUILD_BUG_ON(sizeof(SigpAdtlSaveArea) != 4096);
293
294 #define ADTL_GS_MIN_SIZE 2048 /* minimal size of adtl save area for GS */
295 int s390_store_adtl_status(S390CPU *cpu, hwaddr addr, hwaddr len)
296 {
297 SigpAdtlSaveArea *sa;
298 hwaddr save = len;
299 int i;
300
301 sa = cpu_physical_memory_map(addr, &save, true);
302 if (!sa) {
303 return -EFAULT;
304 }
305 if (save != len) {
306 cpu_physical_memory_unmap(sa, len, 1, 0);
307 return -EFAULT;
308 }
309
310 if (s390_has_feat(S390_FEAT_VECTOR)) {
311 for (i = 0; i < 32; i++) {
312 sa->vregs[i][0] = cpu_to_be64(cpu->env.vregs[i][0]);
313 sa->vregs[i][1] = cpu_to_be64(cpu->env.vregs[i][1]);
314 }
315 }
316 if (s390_has_feat(S390_FEAT_GUARDED_STORAGE) && len >= ADTL_GS_MIN_SIZE) {
317 for (i = 0; i < 4; i++) {
318 sa->gscb[i] = cpu_to_be64(cpu->env.gscb[i]);
319 }
320 }
321
322 cpu_physical_memory_unmap(sa, len, 1, len);
323 return 0;
324 }
325 #endif /* CONFIG_USER_ONLY */
326
327 void s390_cpu_dump_state(CPUState *cs, FILE *f, int flags)
328 {
329 S390CPU *cpu = S390_CPU(cs);
330 CPUS390XState *env = &cpu->env;
331 int i;
332
333 if (env->cc_op > 3) {
334 qemu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %15s\n",
335 env->psw.mask, env->psw.addr, cc_name(env->cc_op));
336 } else {
337 qemu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %02x\n",
338 env->psw.mask, env->psw.addr, env->cc_op);
339 }
340
341 for (i = 0; i < 16; i++) {
342 qemu_fprintf(f, "R%02d=%016" PRIx64, i, env->regs[i]);
343 if ((i % 4) == 3) {
344 qemu_fprintf(f, "\n");
345 } else {
346 qemu_fprintf(f, " ");
347 }
348 }
349
350 if (flags & CPU_DUMP_FPU) {
351 if (s390_has_feat(S390_FEAT_VECTOR)) {
352 for (i = 0; i < 32; i++) {
353 qemu_fprintf(f, "V%02d=%016" PRIx64 "%016" PRIx64 "%c",
354 i, env->vregs[i][0], env->vregs[i][1],
355 i % 2 ? '\n' : ' ');
356 }
357 } else {
358 for (i = 0; i < 16; i++) {
359 qemu_fprintf(f, "F%02d=%016" PRIx64 "%c",
360 i, *get_freg(env, i),
361 (i % 4) == 3 ? '\n' : ' ');
362 }
363 }
364 }
365
366 #ifndef CONFIG_USER_ONLY
367 for (i = 0; i < 16; i++) {
368 qemu_fprintf(f, "C%02d=%016" PRIx64, i, env->cregs[i]);
369 if ((i % 4) == 3) {
370 qemu_fprintf(f, "\n");
371 } else {
372 qemu_fprintf(f, " ");
373 }
374 }
375 #endif
376
377 #ifdef DEBUG_INLINE_BRANCHES
378 for (i = 0; i < CC_OP_MAX; i++) {
379 qemu_fprintf(f, " %15s = %10ld\t%10ld\n", cc_name(i),
380 inline_branch_miss[i], inline_branch_hit[i]);
381 }
382 #endif
383
384 qemu_fprintf(f, "\n");
385 }
386
387 const char *cc_name(enum cc_op cc_op)
388 {
389 static const char * const cc_names[] = {
390 [CC_OP_CONST0] = "CC_OP_CONST0",
391 [CC_OP_CONST1] = "CC_OP_CONST1",
392 [CC_OP_CONST2] = "CC_OP_CONST2",
393 [CC_OP_CONST3] = "CC_OP_CONST3",
394 [CC_OP_DYNAMIC] = "CC_OP_DYNAMIC",
395 [CC_OP_STATIC] = "CC_OP_STATIC",
396 [CC_OP_NZ] = "CC_OP_NZ",
397 [CC_OP_LTGT_32] = "CC_OP_LTGT_32",
398 [CC_OP_LTGT_64] = "CC_OP_LTGT_64",
399 [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
400 [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
401 [CC_OP_LTGT0_32] = "CC_OP_LTGT0_32",
402 [CC_OP_LTGT0_64] = "CC_OP_LTGT0_64",
403 [CC_OP_ADD_64] = "CC_OP_ADD_64",
404 [CC_OP_ADDU_64] = "CC_OP_ADDU_64",
405 [CC_OP_ADDC_64] = "CC_OP_ADDC_64",
406 [CC_OP_SUB_64] = "CC_OP_SUB_64",
407 [CC_OP_SUBU_64] = "CC_OP_SUBU_64",
408 [CC_OP_SUBB_64] = "CC_OP_SUBB_64",
409 [CC_OP_ABS_64] = "CC_OP_ABS_64",
410 [CC_OP_NABS_64] = "CC_OP_NABS_64",
411 [CC_OP_ADD_32] = "CC_OP_ADD_32",
412 [CC_OP_ADDU_32] = "CC_OP_ADDU_32",
413 [CC_OP_ADDC_32] = "CC_OP_ADDC_32",
414 [CC_OP_SUB_32] = "CC_OP_SUB_32",
415 [CC_OP_SUBU_32] = "CC_OP_SUBU_32",
416 [CC_OP_SUBB_32] = "CC_OP_SUBB_32",
417 [CC_OP_ABS_32] = "CC_OP_ABS_32",
418 [CC_OP_NABS_32] = "CC_OP_NABS_32",
419 [CC_OP_COMP_32] = "CC_OP_COMP_32",
420 [CC_OP_COMP_64] = "CC_OP_COMP_64",
421 [CC_OP_TM_32] = "CC_OP_TM_32",
422 [CC_OP_TM_64] = "CC_OP_TM_64",
423 [CC_OP_NZ_F32] = "CC_OP_NZ_F32",
424 [CC_OP_NZ_F64] = "CC_OP_NZ_F64",
425 [CC_OP_NZ_F128] = "CC_OP_NZ_F128",
426 [CC_OP_ICM] = "CC_OP_ICM",
427 [CC_OP_SLA_32] = "CC_OP_SLA_32",
428 [CC_OP_SLA_64] = "CC_OP_SLA_64",
429 [CC_OP_FLOGR] = "CC_OP_FLOGR",
430 [CC_OP_LCBB] = "CC_OP_LCBB",
431 [CC_OP_VC] = "CC_OP_VC",
432 };
433
434 return cc_names[cc_op];
435 }