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8ef7f78e BS |
1 | /* |
2 | * S/390 memory access helper routines | |
3 | * | |
4 | * Copyright (c) 2009 Ulrich Hecht | |
5 | * Copyright (c) 2009 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 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 "cpu.h" | |
8ef7f78e BS |
22 | #include "helper.h" |
23 | ||
24 | /*****************************************************************************/ | |
25 | /* Softmmu support */ | |
26 | #if !defined(CONFIG_USER_ONLY) | |
27 | #include "softmmu_exec.h" | |
28 | ||
29 | #define MMUSUFFIX _mmu | |
30 | ||
31 | #define SHIFT 0 | |
32 | #include "softmmu_template.h" | |
33 | ||
34 | #define SHIFT 1 | |
35 | #include "softmmu_template.h" | |
36 | ||
37 | #define SHIFT 2 | |
38 | #include "softmmu_template.h" | |
39 | ||
40 | #define SHIFT 3 | |
41 | #include "softmmu_template.h" | |
42 | ||
43 | /* try to fill the TLB and return an exception if error. If retaddr is | |
44 | NULL, it means that the function was called in C code (i.e. not | |
45 | from generated code or from helper.c) */ | |
46 | /* XXX: fix it to restore all registers */ | |
19b0516f | 47 | void tlb_fill(CPUS390XState *env, target_ulong addr, int is_write, int mmu_idx, |
8ef7f78e BS |
48 | uintptr_t retaddr) |
49 | { | |
8ef7f78e BS |
50 | int ret; |
51 | ||
8ef7f78e BS |
52 | ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx); |
53 | if (unlikely(ret != 0)) { | |
54 | if (likely(retaddr)) { | |
55 | /* now we have a real cpu fault */ | |
a8a826a3 | 56 | cpu_restore_state(env, retaddr); |
8ef7f78e BS |
57 | } |
58 | cpu_loop_exit(env); | |
59 | } | |
8ef7f78e BS |
60 | } |
61 | ||
62 | #endif | |
63 | ||
64 | /* #define DEBUG_HELPER */ | |
65 | #ifdef DEBUG_HELPER | |
66 | #define HELPER_LOG(x...) qemu_log(x) | |
67 | #else | |
68 | #define HELPER_LOG(x...) | |
69 | #endif | |
70 | ||
71 | #ifndef CONFIG_USER_ONLY | |
72 | static void mvc_fast_memset(CPUS390XState *env, uint32_t l, uint64_t dest, | |
73 | uint8_t byte) | |
74 | { | |
a8170e5e AK |
75 | hwaddr dest_phys; |
76 | hwaddr len = l; | |
8ef7f78e BS |
77 | void *dest_p; |
78 | uint64_t asc = env->psw.mask & PSW_MASK_ASC; | |
79 | int flags; | |
80 | ||
81 | if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { | |
19b0516f | 82 | cpu_stb_data(env, dest, byte); |
8ef7f78e BS |
83 | cpu_abort(env, "should never reach here"); |
84 | } | |
85 | dest_phys |= dest & ~TARGET_PAGE_MASK; | |
86 | ||
87 | dest_p = cpu_physical_memory_map(dest_phys, &len, 1); | |
88 | ||
89 | memset(dest_p, byte, len); | |
90 | ||
91 | cpu_physical_memory_unmap(dest_p, 1, len, len); | |
92 | } | |
93 | ||
94 | static void mvc_fast_memmove(CPUS390XState *env, uint32_t l, uint64_t dest, | |
95 | uint64_t src) | |
96 | { | |
a8170e5e AK |
97 | hwaddr dest_phys; |
98 | hwaddr src_phys; | |
99 | hwaddr len = l; | |
8ef7f78e BS |
100 | void *dest_p; |
101 | void *src_p; | |
102 | uint64_t asc = env->psw.mask & PSW_MASK_ASC; | |
103 | int flags; | |
104 | ||
105 | if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) { | |
19b0516f | 106 | cpu_stb_data(env, dest, 0); |
8ef7f78e BS |
107 | cpu_abort(env, "should never reach here"); |
108 | } | |
109 | dest_phys |= dest & ~TARGET_PAGE_MASK; | |
110 | ||
111 | if (mmu_translate(env, src, 0, asc, &src_phys, &flags)) { | |
19b0516f | 112 | cpu_ldub_data(env, src); |
8ef7f78e BS |
113 | cpu_abort(env, "should never reach here"); |
114 | } | |
115 | src_phys |= src & ~TARGET_PAGE_MASK; | |
116 | ||
117 | dest_p = cpu_physical_memory_map(dest_phys, &len, 1); | |
118 | src_p = cpu_physical_memory_map(src_phys, &len, 0); | |
119 | ||
120 | memmove(dest_p, src_p, len); | |
121 | ||
122 | cpu_physical_memory_unmap(dest_p, 1, len, len); | |
123 | cpu_physical_memory_unmap(src_p, 0, len, len); | |
124 | } | |
125 | #endif | |
126 | ||
127 | /* and on array */ | |
19b0516f BS |
128 | uint32_t HELPER(nc)(CPUS390XState *env, uint32_t l, uint64_t dest, |
129 | uint64_t src) | |
8ef7f78e BS |
130 | { |
131 | int i; | |
132 | unsigned char x; | |
133 | uint32_t cc = 0; | |
134 | ||
135 | HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", | |
136 | __func__, l, dest, src); | |
137 | for (i = 0; i <= l; i++) { | |
19b0516f | 138 | x = cpu_ldub_data(env, dest + i) & cpu_ldub_data(env, src + i); |
8ef7f78e BS |
139 | if (x) { |
140 | cc = 1; | |
141 | } | |
19b0516f | 142 | cpu_stb_data(env, dest + i, x); |
8ef7f78e BS |
143 | } |
144 | return cc; | |
145 | } | |
146 | ||
147 | /* xor on array */ | |
19b0516f BS |
148 | uint32_t HELPER(xc)(CPUS390XState *env, uint32_t l, uint64_t dest, |
149 | uint64_t src) | |
8ef7f78e BS |
150 | { |
151 | int i; | |
152 | unsigned char x; | |
153 | uint32_t cc = 0; | |
154 | ||
155 | HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", | |
156 | __func__, l, dest, src); | |
157 | ||
158 | #ifndef CONFIG_USER_ONLY | |
159 | /* xor with itself is the same as memset(0) */ | |
160 | if ((l > 32) && (src == dest) && | |
161 | (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK)) { | |
162 | mvc_fast_memset(env, l + 1, dest, 0); | |
163 | return 0; | |
164 | } | |
165 | #else | |
166 | if (src == dest) { | |
167 | memset(g2h(dest), 0, l + 1); | |
168 | return 0; | |
169 | } | |
170 | #endif | |
171 | ||
172 | for (i = 0; i <= l; i++) { | |
19b0516f | 173 | x = cpu_ldub_data(env, dest + i) ^ cpu_ldub_data(env, src + i); |
8ef7f78e BS |
174 | if (x) { |
175 | cc = 1; | |
176 | } | |
19b0516f | 177 | cpu_stb_data(env, dest + i, x); |
8ef7f78e BS |
178 | } |
179 | return cc; | |
180 | } | |
181 | ||
182 | /* or on array */ | |
19b0516f BS |
183 | uint32_t HELPER(oc)(CPUS390XState *env, uint32_t l, uint64_t dest, |
184 | uint64_t src) | |
8ef7f78e BS |
185 | { |
186 | int i; | |
187 | unsigned char x; | |
188 | uint32_t cc = 0; | |
189 | ||
190 | HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", | |
191 | __func__, l, dest, src); | |
192 | for (i = 0; i <= l; i++) { | |
19b0516f | 193 | x = cpu_ldub_data(env, dest + i) | cpu_ldub_data(env, src + i); |
8ef7f78e BS |
194 | if (x) { |
195 | cc = 1; | |
196 | } | |
19b0516f | 197 | cpu_stb_data(env, dest + i, x); |
8ef7f78e BS |
198 | } |
199 | return cc; | |
200 | } | |
201 | ||
202 | /* memmove */ | |
19b0516f | 203 | void HELPER(mvc)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src) |
8ef7f78e BS |
204 | { |
205 | int i = 0; | |
206 | int x = 0; | |
207 | uint32_t l_64 = (l + 1) / 8; | |
208 | ||
209 | HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", | |
210 | __func__, l, dest, src); | |
211 | ||
212 | #ifndef CONFIG_USER_ONLY | |
213 | if ((l > 32) && | |
214 | (src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK) && | |
215 | (dest & TARGET_PAGE_MASK) == ((dest + l) & TARGET_PAGE_MASK)) { | |
216 | if (dest == (src + 1)) { | |
19b0516f | 217 | mvc_fast_memset(env, l + 1, dest, cpu_ldub_data(env, src)); |
8ef7f78e BS |
218 | return; |
219 | } else if ((src & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) { | |
220 | mvc_fast_memmove(env, l + 1, dest, src); | |
221 | return; | |
222 | } | |
223 | } | |
224 | #else | |
225 | if (dest == (src + 1)) { | |
19b0516f | 226 | memset(g2h(dest), cpu_ldub_data(env, src), l + 1); |
8ef7f78e BS |
227 | return; |
228 | } else { | |
229 | memmove(g2h(dest), g2h(src), l + 1); | |
230 | return; | |
231 | } | |
232 | #endif | |
233 | ||
234 | /* handle the parts that fit into 8-byte loads/stores */ | |
235 | if (dest != (src + 1)) { | |
236 | for (i = 0; i < l_64; i++) { | |
19b0516f | 237 | cpu_stq_data(env, dest + x, cpu_ldq_data(env, src + x)); |
8ef7f78e BS |
238 | x += 8; |
239 | } | |
240 | } | |
241 | ||
242 | /* slow version crossing pages with byte accesses */ | |
243 | for (i = x; i <= l; i++) { | |
19b0516f | 244 | cpu_stb_data(env, dest + i, cpu_ldub_data(env, src + i)); |
8ef7f78e BS |
245 | } |
246 | } | |
247 | ||
248 | /* compare unsigned byte arrays */ | |
19b0516f | 249 | uint32_t HELPER(clc)(CPUS390XState *env, uint32_t l, uint64_t s1, uint64_t s2) |
8ef7f78e BS |
250 | { |
251 | int i; | |
252 | unsigned char x, y; | |
253 | uint32_t cc; | |
254 | ||
255 | HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n", | |
256 | __func__, l, s1, s2); | |
257 | for (i = 0; i <= l; i++) { | |
19b0516f BS |
258 | x = cpu_ldub_data(env, s1 + i); |
259 | y = cpu_ldub_data(env, s2 + i); | |
8ef7f78e BS |
260 | HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y); |
261 | if (x < y) { | |
262 | cc = 1; | |
263 | goto done; | |
264 | } else if (x > y) { | |
265 | cc = 2; | |
266 | goto done; | |
267 | } | |
268 | } | |
269 | cc = 0; | |
270 | done: | |
271 | HELPER_LOG("\n"); | |
272 | return cc; | |
273 | } | |
274 | ||
275 | /* compare logical under mask */ | |
19b0516f BS |
276 | uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask, |
277 | uint64_t addr) | |
8ef7f78e BS |
278 | { |
279 | uint8_t r, d; | |
280 | uint32_t cc; | |
281 | ||
282 | HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1, | |
283 | mask, addr); | |
284 | cc = 0; | |
285 | while (mask) { | |
286 | if (mask & 8) { | |
19b0516f | 287 | d = cpu_ldub_data(env, addr); |
8ef7f78e BS |
288 | r = (r1 & 0xff000000UL) >> 24; |
289 | HELPER_LOG("mask 0x%x %02x/%02x (0x%" PRIx64 ") ", mask, r, d, | |
290 | addr); | |
291 | if (r < d) { | |
292 | cc = 1; | |
293 | break; | |
294 | } else if (r > d) { | |
295 | cc = 2; | |
296 | break; | |
297 | } | |
298 | addr++; | |
299 | } | |
300 | mask = (mask << 1) & 0xf; | |
301 | r1 <<= 8; | |
302 | } | |
303 | HELPER_LOG("\n"); | |
304 | return cc; | |
305 | } | |
306 | ||
307 | /* store character under mask */ | |
19b0516f BS |
308 | void HELPER(stcm)(CPUS390XState *env, uint32_t r1, uint32_t mask, |
309 | uint64_t addr) | |
8ef7f78e BS |
310 | { |
311 | uint8_t r; | |
312 | ||
313 | HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%lx\n", __func__, r1, mask, | |
314 | addr); | |
315 | while (mask) { | |
316 | if (mask & 8) { | |
317 | r = (r1 & 0xff000000UL) >> 24; | |
19b0516f | 318 | cpu_stb_data(env, addr, r); |
8ef7f78e BS |
319 | HELPER_LOG("mask 0x%x %02x (0x%lx) ", mask, r, addr); |
320 | addr++; | |
321 | } | |
322 | mask = (mask << 1) & 0xf; | |
323 | r1 <<= 8; | |
324 | } | |
325 | HELPER_LOG("\n"); | |
326 | } | |
327 | ||
19b0516f | 328 | static inline uint64_t get_address(CPUS390XState *env, int x2, int b2, int d2) |
8ef7f78e BS |
329 | { |
330 | uint64_t r = d2; | |
331 | ||
332 | if (x2) { | |
333 | r += env->regs[x2]; | |
334 | } | |
335 | ||
336 | if (b2) { | |
337 | r += env->regs[b2]; | |
338 | } | |
339 | ||
340 | /* 31-Bit mode */ | |
341 | if (!(env->psw.mask & PSW_MASK_64)) { | |
342 | r &= 0x7fffffff; | |
343 | } | |
344 | ||
345 | return r; | |
346 | } | |
347 | ||
19b0516f | 348 | static inline uint64_t get_address_31fix(CPUS390XState *env, int reg) |
8ef7f78e BS |
349 | { |
350 | uint64_t r = env->regs[reg]; | |
351 | ||
352 | /* 31-Bit mode */ | |
353 | if (!(env->psw.mask & PSW_MASK_64)) { | |
354 | r &= 0x7fffffff; | |
355 | } | |
356 | ||
357 | return r; | |
358 | } | |
359 | ||
360 | /* search string (c is byte to search, r2 is string, r1 end of string) */ | |
19b0516f | 361 | uint32_t HELPER(srst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) |
8ef7f78e BS |
362 | { |
363 | uint64_t i; | |
364 | uint32_t cc = 2; | |
19b0516f BS |
365 | uint64_t str = get_address_31fix(env, r2); |
366 | uint64_t end = get_address_31fix(env, r1); | |
8ef7f78e BS |
367 | |
368 | HELPER_LOG("%s: c %d *r1 0x%" PRIx64 " *r2 0x%" PRIx64 "\n", __func__, | |
369 | c, env->regs[r1], env->regs[r2]); | |
370 | ||
371 | for (i = str; i != end; i++) { | |
19b0516f | 372 | if (cpu_ldub_data(env, i) == c) { |
8ef7f78e BS |
373 | env->regs[r1] = i; |
374 | cc = 1; | |
375 | break; | |
376 | } | |
377 | } | |
378 | ||
379 | return cc; | |
380 | } | |
381 | ||
382 | /* unsigned string compare (c is string terminator) */ | |
19b0516f | 383 | uint32_t HELPER(clst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) |
8ef7f78e | 384 | { |
19b0516f BS |
385 | uint64_t s1 = get_address_31fix(env, r1); |
386 | uint64_t s2 = get_address_31fix(env, r2); | |
8ef7f78e BS |
387 | uint8_t v1, v2; |
388 | uint32_t cc; | |
389 | ||
390 | c = c & 0xff; | |
391 | #ifdef CONFIG_USER_ONLY | |
392 | if (!c) { | |
393 | HELPER_LOG("%s: comparing '%s' and '%s'\n", | |
394 | __func__, (char *)g2h(s1), (char *)g2h(s2)); | |
395 | } | |
396 | #endif | |
397 | for (;;) { | |
19b0516f BS |
398 | v1 = cpu_ldub_data(env, s1); |
399 | v2 = cpu_ldub_data(env, s2); | |
8ef7f78e BS |
400 | if ((v1 == c || v2 == c) || (v1 != v2)) { |
401 | break; | |
402 | } | |
403 | s1++; | |
404 | s2++; | |
405 | } | |
406 | ||
407 | if (v1 == v2) { | |
408 | cc = 0; | |
409 | } else { | |
410 | cc = (v1 < v2) ? 1 : 2; | |
411 | /* FIXME: 31-bit mode! */ | |
412 | env->regs[r1] = s1; | |
413 | env->regs[r2] = s2; | |
414 | } | |
415 | return cc; | |
416 | } | |
417 | ||
418 | /* move page */ | |
19b0516f | 419 | void HELPER(mvpg)(CPUS390XState *env, uint64_t r0, uint64_t r1, uint64_t r2) |
8ef7f78e BS |
420 | { |
421 | /* XXX missing r0 handling */ | |
422 | #ifdef CONFIG_USER_ONLY | |
423 | int i; | |
424 | ||
425 | for (i = 0; i < TARGET_PAGE_SIZE; i++) { | |
19b0516f | 426 | cpu_stb_data(env, r1 + i, cpu_ldub_data(env, r2 + i)); |
8ef7f78e BS |
427 | } |
428 | #else | |
429 | mvc_fast_memmove(env, TARGET_PAGE_SIZE, r1, r2); | |
430 | #endif | |
431 | } | |
432 | ||
433 | /* string copy (c is string terminator) */ | |
19b0516f | 434 | void HELPER(mvst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) |
8ef7f78e | 435 | { |
19b0516f BS |
436 | uint64_t dest = get_address_31fix(env, r1); |
437 | uint64_t src = get_address_31fix(env, r2); | |
8ef7f78e BS |
438 | uint8_t v; |
439 | ||
440 | c = c & 0xff; | |
441 | #ifdef CONFIG_USER_ONLY | |
442 | if (!c) { | |
443 | HELPER_LOG("%s: copy '%s' to 0x%lx\n", __func__, (char *)g2h(src), | |
444 | dest); | |
445 | } | |
446 | #endif | |
447 | for (;;) { | |
19b0516f BS |
448 | v = cpu_ldub_data(env, src); |
449 | cpu_stb_data(env, dest, v); | |
8ef7f78e BS |
450 | if (v == c) { |
451 | break; | |
452 | } | |
453 | src++; | |
454 | dest++; | |
455 | } | |
456 | env->regs[r1] = dest; /* FIXME: 31-bit mode! */ | |
457 | } | |
458 | ||
459 | /* compare and swap 64-bit */ | |
19b0516f | 460 | uint32_t HELPER(csg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
461 | { |
462 | /* FIXME: locking? */ | |
463 | uint32_t cc; | |
19b0516f | 464 | uint64_t v2 = cpu_ldq_data(env, a2); |
8ef7f78e BS |
465 | |
466 | if (env->regs[r1] == v2) { | |
467 | cc = 0; | |
19b0516f | 468 | cpu_stq_data(env, a2, env->regs[r3]); |
8ef7f78e BS |
469 | } else { |
470 | cc = 1; | |
471 | env->regs[r1] = v2; | |
472 | } | |
473 | return cc; | |
474 | } | |
475 | ||
476 | /* compare double and swap 64-bit */ | |
19b0516f | 477 | uint32_t HELPER(cdsg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
478 | { |
479 | /* FIXME: locking? */ | |
480 | uint32_t cc; | |
19b0516f BS |
481 | uint64_t v2_hi = cpu_ldq_data(env, a2); |
482 | uint64_t v2_lo = cpu_ldq_data(env, a2 + 8); | |
8ef7f78e BS |
483 | uint64_t v1_hi = env->regs[r1]; |
484 | uint64_t v1_lo = env->regs[r1 + 1]; | |
485 | ||
486 | if ((v1_hi == v2_hi) && (v1_lo == v2_lo)) { | |
487 | cc = 0; | |
19b0516f BS |
488 | cpu_stq_data(env, a2, env->regs[r3]); |
489 | cpu_stq_data(env, a2 + 8, env->regs[r3 + 1]); | |
8ef7f78e BS |
490 | } else { |
491 | cc = 1; | |
492 | env->regs[r1] = v2_hi; | |
493 | env->regs[r1 + 1] = v2_lo; | |
494 | } | |
495 | ||
496 | return cc; | |
497 | } | |
498 | ||
499 | /* compare and swap 32-bit */ | |
19b0516f | 500 | uint32_t HELPER(cs)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
501 | { |
502 | /* FIXME: locking? */ | |
503 | uint32_t cc; | |
19b0516f | 504 | uint32_t v2 = cpu_ldl_data(env, a2); |
8ef7f78e BS |
505 | |
506 | HELPER_LOG("%s: r1 %d a2 0x%lx r3 %d\n", __func__, r1, a2, r3); | |
507 | if (((uint32_t)env->regs[r1]) == v2) { | |
508 | cc = 0; | |
19b0516f | 509 | cpu_stl_data(env, a2, (uint32_t)env->regs[r3]); |
8ef7f78e BS |
510 | } else { |
511 | cc = 1; | |
512 | env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | v2; | |
513 | } | |
514 | return cc; | |
515 | } | |
516 | ||
19b0516f BS |
517 | static uint32_t helper_icm(CPUS390XState *env, uint32_t r1, uint64_t address, |
518 | uint32_t mask) | |
8ef7f78e BS |
519 | { |
520 | int pos = 24; /* top of the lower half of r1 */ | |
521 | uint64_t rmask = 0xff000000ULL; | |
522 | uint8_t val = 0; | |
523 | int ccd = 0; | |
524 | uint32_t cc = 0; | |
525 | ||
526 | while (mask) { | |
527 | if (mask & 8) { | |
528 | env->regs[r1] &= ~rmask; | |
19b0516f | 529 | val = cpu_ldub_data(env, address); |
8ef7f78e BS |
530 | if ((val & 0x80) && !ccd) { |
531 | cc = 1; | |
532 | } | |
533 | ccd = 1; | |
534 | if (val && cc == 0) { | |
535 | cc = 2; | |
536 | } | |
537 | env->regs[r1] |= (uint64_t)val << pos; | |
538 | address++; | |
539 | } | |
540 | mask = (mask << 1) & 0xf; | |
541 | pos -= 8; | |
542 | rmask >>= 8; | |
543 | } | |
544 | ||
545 | return cc; | |
546 | } | |
547 | ||
548 | /* execute instruction | |
549 | this instruction executes an insn modified with the contents of r1 | |
550 | it does not change the executed instruction in memory | |
551 | it does not change the program counter | |
552 | in other words: tricky... | |
553 | currently implemented by interpreting the cases it is most commonly used in | |
554 | */ | |
19b0516f BS |
555 | uint32_t HELPER(ex)(CPUS390XState *env, uint32_t cc, uint64_t v1, |
556 | uint64_t addr, uint64_t ret) | |
8ef7f78e | 557 | { |
19b0516f | 558 | uint16_t insn = cpu_lduw_code(env, addr); |
8ef7f78e BS |
559 | |
560 | HELPER_LOG("%s: v1 0x%lx addr 0x%lx insn 0x%x\n", __func__, v1, addr, | |
561 | insn); | |
562 | if ((insn & 0xf0ff) == 0xd000) { | |
563 | uint32_t l, insn2, b1, b2, d1, d2; | |
564 | ||
565 | l = v1 & 0xff; | |
19b0516f | 566 | insn2 = cpu_ldl_code(env, addr + 2); |
8ef7f78e BS |
567 | b1 = (insn2 >> 28) & 0xf; |
568 | b2 = (insn2 >> 12) & 0xf; | |
569 | d1 = (insn2 >> 16) & 0xfff; | |
570 | d2 = insn2 & 0xfff; | |
571 | switch (insn & 0xf00) { | |
572 | case 0x200: | |
19b0516f BS |
573 | helper_mvc(env, l, get_address(env, 0, b1, d1), |
574 | get_address(env, 0, b2, d2)); | |
8ef7f78e BS |
575 | break; |
576 | case 0x500: | |
19b0516f BS |
577 | cc = helper_clc(env, l, get_address(env, 0, b1, d1), |
578 | get_address(env, 0, b2, d2)); | |
8ef7f78e BS |
579 | break; |
580 | case 0x700: | |
19b0516f BS |
581 | cc = helper_xc(env, l, get_address(env, 0, b1, d1), |
582 | get_address(env, 0, b2, d2)); | |
8ef7f78e BS |
583 | break; |
584 | case 0xc00: | |
19b0516f BS |
585 | helper_tr(env, l, get_address(env, 0, b1, d1), |
586 | get_address(env, 0, b2, d2)); | |
8ef7f78e BS |
587 | break; |
588 | default: | |
589 | goto abort; | |
590 | break; | |
591 | } | |
592 | } else if ((insn & 0xff00) == 0x0a00) { | |
593 | /* supervisor call */ | |
594 | HELPER_LOG("%s: svc %ld via execute\n", __func__, (insn | v1) & 0xff); | |
595 | env->psw.addr = ret - 4; | |
596 | env->int_svc_code = (insn | v1) & 0xff; | |
597 | env->int_svc_ilc = 4; | |
089f5c06 | 598 | helper_exception(env, EXCP_SVC); |
8ef7f78e BS |
599 | } else if ((insn & 0xff00) == 0xbf00) { |
600 | uint32_t insn2, r1, r3, b2, d2; | |
601 | ||
19b0516f | 602 | insn2 = cpu_ldl_code(env, addr + 2); |
8ef7f78e BS |
603 | r1 = (insn2 >> 20) & 0xf; |
604 | r3 = (insn2 >> 16) & 0xf; | |
605 | b2 = (insn2 >> 12) & 0xf; | |
606 | d2 = insn2 & 0xfff; | |
19b0516f | 607 | cc = helper_icm(env, r1, get_address(env, 0, b2, d2), r3); |
8ef7f78e BS |
608 | } else { |
609 | abort: | |
610 | cpu_abort(env, "EXECUTE on instruction prefix 0x%x not implemented\n", | |
611 | insn); | |
612 | } | |
613 | return cc; | |
614 | } | |
615 | ||
616 | /* store character under mask high operates on the upper half of r1 */ | |
19b0516f BS |
617 | void HELPER(stcmh)(CPUS390XState *env, uint32_t r1, uint64_t address, |
618 | uint32_t mask) | |
8ef7f78e BS |
619 | { |
620 | int pos = 56; /* top of the upper half of r1 */ | |
621 | ||
622 | while (mask) { | |
623 | if (mask & 8) { | |
19b0516f | 624 | cpu_stb_data(env, address, (env->regs[r1] >> pos) & 0xff); |
8ef7f78e BS |
625 | address++; |
626 | } | |
627 | mask = (mask << 1) & 0xf; | |
628 | pos -= 8; | |
629 | } | |
630 | } | |
631 | ||
632 | /* insert character under mask high; same as icm, but operates on the | |
633 | upper half of r1 */ | |
19b0516f BS |
634 | uint32_t HELPER(icmh)(CPUS390XState *env, uint32_t r1, uint64_t address, |
635 | uint32_t mask) | |
8ef7f78e BS |
636 | { |
637 | int pos = 56; /* top of the upper half of r1 */ | |
638 | uint64_t rmask = 0xff00000000000000ULL; | |
639 | uint8_t val = 0; | |
640 | int ccd = 0; | |
641 | uint32_t cc = 0; | |
642 | ||
643 | while (mask) { | |
644 | if (mask & 8) { | |
645 | env->regs[r1] &= ~rmask; | |
19b0516f | 646 | val = cpu_ldub_data(env, address); |
8ef7f78e BS |
647 | if ((val & 0x80) && !ccd) { |
648 | cc = 1; | |
649 | } | |
650 | ccd = 1; | |
651 | if (val && cc == 0) { | |
652 | cc = 2; | |
653 | } | |
654 | env->regs[r1] |= (uint64_t)val << pos; | |
655 | address++; | |
656 | } | |
657 | mask = (mask << 1) & 0xf; | |
658 | pos -= 8; | |
659 | rmask >>= 8; | |
660 | } | |
661 | ||
662 | return cc; | |
663 | } | |
664 | ||
665 | /* load access registers r1 to r3 from memory at a2 */ | |
19b0516f | 666 | void HELPER(lam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
667 | { |
668 | int i; | |
669 | ||
670 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f | 671 | env->aregs[i] = cpu_ldl_data(env, a2); |
8ef7f78e BS |
672 | a2 += 4; |
673 | ||
674 | if (i == r3) { | |
675 | break; | |
676 | } | |
677 | } | |
678 | } | |
679 | ||
680 | /* store access registers r1 to r3 in memory at a2 */ | |
19b0516f | 681 | void HELPER(stam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
682 | { |
683 | int i; | |
684 | ||
685 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f | 686 | cpu_stl_data(env, a2, env->aregs[i]); |
8ef7f78e BS |
687 | a2 += 4; |
688 | ||
689 | if (i == r3) { | |
690 | break; | |
691 | } | |
692 | } | |
693 | } | |
694 | ||
695 | /* move long */ | |
19b0516f | 696 | uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2) |
8ef7f78e BS |
697 | { |
698 | uint64_t destlen = env->regs[r1 + 1] & 0xffffff; | |
19b0516f | 699 | uint64_t dest = get_address_31fix(env, r1); |
8ef7f78e | 700 | uint64_t srclen = env->regs[r2 + 1] & 0xffffff; |
19b0516f | 701 | uint64_t src = get_address_31fix(env, r2); |
8ef7f78e BS |
702 | uint8_t pad = src >> 24; |
703 | uint8_t v; | |
704 | uint32_t cc; | |
705 | ||
706 | if (destlen == srclen) { | |
707 | cc = 0; | |
708 | } else if (destlen < srclen) { | |
709 | cc = 1; | |
710 | } else { | |
711 | cc = 2; | |
712 | } | |
713 | ||
714 | if (srclen > destlen) { | |
715 | srclen = destlen; | |
716 | } | |
717 | ||
718 | for (; destlen && srclen; src++, dest++, destlen--, srclen--) { | |
19b0516f BS |
719 | v = cpu_ldub_data(env, src); |
720 | cpu_stb_data(env, dest, v); | |
8ef7f78e BS |
721 | } |
722 | ||
723 | for (; destlen; dest++, destlen--) { | |
19b0516f | 724 | cpu_stb_data(env, dest, pad); |
8ef7f78e BS |
725 | } |
726 | ||
727 | env->regs[r1 + 1] = destlen; | |
728 | /* can't use srclen here, we trunc'ed it */ | |
729 | env->regs[r2 + 1] -= src - env->regs[r2]; | |
730 | env->regs[r1] = dest; | |
731 | env->regs[r2] = src; | |
732 | ||
733 | return cc; | |
734 | } | |
735 | ||
736 | /* move long extended another memcopy insn with more bells and whistles */ | |
19b0516f BS |
737 | uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2, |
738 | uint32_t r3) | |
8ef7f78e BS |
739 | { |
740 | uint64_t destlen = env->regs[r1 + 1]; | |
741 | uint64_t dest = env->regs[r1]; | |
742 | uint64_t srclen = env->regs[r3 + 1]; | |
743 | uint64_t src = env->regs[r3]; | |
744 | uint8_t pad = a2 & 0xff; | |
745 | uint8_t v; | |
746 | uint32_t cc; | |
747 | ||
748 | if (!(env->psw.mask & PSW_MASK_64)) { | |
749 | destlen = (uint32_t)destlen; | |
750 | srclen = (uint32_t)srclen; | |
751 | dest &= 0x7fffffff; | |
752 | src &= 0x7fffffff; | |
753 | } | |
754 | ||
755 | if (destlen == srclen) { | |
756 | cc = 0; | |
757 | } else if (destlen < srclen) { | |
758 | cc = 1; | |
759 | } else { | |
760 | cc = 2; | |
761 | } | |
762 | ||
763 | if (srclen > destlen) { | |
764 | srclen = destlen; | |
765 | } | |
766 | ||
767 | for (; destlen && srclen; src++, dest++, destlen--, srclen--) { | |
19b0516f BS |
768 | v = cpu_ldub_data(env, src); |
769 | cpu_stb_data(env, dest, v); | |
8ef7f78e BS |
770 | } |
771 | ||
772 | for (; destlen; dest++, destlen--) { | |
19b0516f | 773 | cpu_stb_data(env, dest, pad); |
8ef7f78e BS |
774 | } |
775 | ||
776 | env->regs[r1 + 1] = destlen; | |
777 | /* can't use srclen here, we trunc'ed it */ | |
778 | /* FIXME: 31-bit mode! */ | |
779 | env->regs[r3 + 1] -= src - env->regs[r3]; | |
780 | env->regs[r1] = dest; | |
781 | env->regs[r3] = src; | |
782 | ||
783 | return cc; | |
784 | } | |
785 | ||
786 | /* compare logical long extended memcompare insn with padding */ | |
19b0516f BS |
787 | uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1, uint64_t a2, |
788 | uint32_t r3) | |
8ef7f78e BS |
789 | { |
790 | uint64_t destlen = env->regs[r1 + 1]; | |
19b0516f | 791 | uint64_t dest = get_address_31fix(env, r1); |
8ef7f78e | 792 | uint64_t srclen = env->regs[r3 + 1]; |
19b0516f | 793 | uint64_t src = get_address_31fix(env, r3); |
8ef7f78e BS |
794 | uint8_t pad = a2 & 0xff; |
795 | uint8_t v1 = 0, v2 = 0; | |
796 | uint32_t cc = 0; | |
797 | ||
798 | if (!(destlen || srclen)) { | |
799 | return cc; | |
800 | } | |
801 | ||
802 | if (srclen > destlen) { | |
803 | srclen = destlen; | |
804 | } | |
805 | ||
806 | for (; destlen || srclen; src++, dest++, destlen--, srclen--) { | |
19b0516f BS |
807 | v1 = srclen ? cpu_ldub_data(env, src) : pad; |
808 | v2 = destlen ? cpu_ldub_data(env, dest) : pad; | |
8ef7f78e BS |
809 | if (v1 != v2) { |
810 | cc = (v1 < v2) ? 1 : 2; | |
811 | break; | |
812 | } | |
813 | } | |
814 | ||
815 | env->regs[r1 + 1] = destlen; | |
816 | /* can't use srclen here, we trunc'ed it */ | |
817 | env->regs[r3 + 1] -= src - env->regs[r3]; | |
818 | env->regs[r1] = dest; | |
819 | env->regs[r3] = src; | |
820 | ||
821 | return cc; | |
822 | } | |
823 | ||
824 | /* checksum */ | |
19b0516f | 825 | void HELPER(cksm)(CPUS390XState *env, uint32_t r1, uint32_t r2) |
8ef7f78e | 826 | { |
19b0516f | 827 | uint64_t src = get_address_31fix(env, r2); |
8ef7f78e BS |
828 | uint64_t src_len = env->regs[(r2 + 1) & 15]; |
829 | uint64_t cksm = (uint32_t)env->regs[r1]; | |
830 | ||
831 | while (src_len >= 4) { | |
19b0516f | 832 | cksm += cpu_ldl_data(env, src); |
8ef7f78e BS |
833 | |
834 | /* move to next word */ | |
835 | src_len -= 4; | |
836 | src += 4; | |
837 | } | |
838 | ||
839 | switch (src_len) { | |
840 | case 0: | |
841 | break; | |
842 | case 1: | |
19b0516f | 843 | cksm += cpu_ldub_data(env, src) << 24; |
8ef7f78e BS |
844 | break; |
845 | case 2: | |
19b0516f | 846 | cksm += cpu_lduw_data(env, src) << 16; |
8ef7f78e BS |
847 | break; |
848 | case 3: | |
19b0516f BS |
849 | cksm += cpu_lduw_data(env, src) << 16; |
850 | cksm += cpu_ldub_data(env, src + 2) << 8; | |
8ef7f78e BS |
851 | break; |
852 | } | |
853 | ||
854 | /* indicate we've processed everything */ | |
855 | env->regs[r2] = src + src_len; | |
856 | env->regs[(r2 + 1) & 15] = 0; | |
857 | ||
858 | /* store result */ | |
859 | env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | | |
860 | ((uint32_t)cksm + (cksm >> 32)); | |
861 | } | |
862 | ||
19b0516f BS |
863 | void HELPER(unpk)(CPUS390XState *env, uint32_t len, uint64_t dest, |
864 | uint64_t src) | |
8ef7f78e BS |
865 | { |
866 | int len_dest = len >> 4; | |
867 | int len_src = len & 0xf; | |
868 | uint8_t b; | |
869 | int second_nibble = 0; | |
870 | ||
871 | dest += len_dest; | |
872 | src += len_src; | |
873 | ||
874 | /* last byte is special, it only flips the nibbles */ | |
19b0516f BS |
875 | b = cpu_ldub_data(env, src); |
876 | cpu_stb_data(env, dest, (b << 4) | (b >> 4)); | |
8ef7f78e BS |
877 | src--; |
878 | len_src--; | |
879 | ||
880 | /* now pad every nibble with 0xf0 */ | |
881 | ||
882 | while (len_dest > 0) { | |
883 | uint8_t cur_byte = 0; | |
884 | ||
885 | if (len_src > 0) { | |
19b0516f | 886 | cur_byte = cpu_ldub_data(env, src); |
8ef7f78e BS |
887 | } |
888 | ||
889 | len_dest--; | |
890 | dest--; | |
891 | ||
892 | /* only advance one nibble at a time */ | |
893 | if (second_nibble) { | |
894 | cur_byte >>= 4; | |
895 | len_src--; | |
896 | src--; | |
897 | } | |
898 | second_nibble = !second_nibble; | |
899 | ||
900 | /* digit */ | |
901 | cur_byte = (cur_byte & 0xf); | |
902 | /* zone bits */ | |
903 | cur_byte |= 0xf0; | |
904 | ||
19b0516f | 905 | cpu_stb_data(env, dest, cur_byte); |
8ef7f78e BS |
906 | } |
907 | } | |
908 | ||
19b0516f BS |
909 | void HELPER(tr)(CPUS390XState *env, uint32_t len, uint64_t array, |
910 | uint64_t trans) | |
8ef7f78e BS |
911 | { |
912 | int i; | |
913 | ||
914 | for (i = 0; i <= len; i++) { | |
19b0516f BS |
915 | uint8_t byte = cpu_ldub_data(env, array + i); |
916 | uint8_t new_byte = cpu_ldub_data(env, trans + byte); | |
8ef7f78e | 917 | |
19b0516f | 918 | cpu_stb_data(env, array + i, new_byte); |
8ef7f78e BS |
919 | } |
920 | } | |
921 | ||
922 | #if !defined(CONFIG_USER_ONLY) | |
19b0516f | 923 | void HELPER(lctlg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
924 | { |
925 | int i; | |
926 | uint64_t src = a2; | |
927 | ||
928 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f | 929 | env->cregs[i] = cpu_ldq_data(env, src); |
8ef7f78e BS |
930 | HELPER_LOG("load ctl %d from 0x%" PRIx64 " == 0x%" PRIx64 "\n", |
931 | i, src, env->cregs[i]); | |
932 | src += sizeof(uint64_t); | |
933 | ||
934 | if (i == r3) { | |
935 | break; | |
936 | } | |
937 | } | |
938 | ||
939 | tlb_flush(env, 1); | |
940 | } | |
941 | ||
19b0516f | 942 | void HELPER(lctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
943 | { |
944 | int i; | |
945 | uint64_t src = a2; | |
946 | ||
947 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f BS |
948 | env->cregs[i] = (env->cregs[i] & 0xFFFFFFFF00000000ULL) | |
949 | cpu_ldl_data(env, src); | |
8ef7f78e BS |
950 | src += sizeof(uint32_t); |
951 | ||
952 | if (i == r3) { | |
953 | break; | |
954 | } | |
955 | } | |
956 | ||
957 | tlb_flush(env, 1); | |
958 | } | |
959 | ||
19b0516f | 960 | void HELPER(stctg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
961 | { |
962 | int i; | |
963 | uint64_t dest = a2; | |
964 | ||
965 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f | 966 | cpu_stq_data(env, dest, env->cregs[i]); |
8ef7f78e BS |
967 | dest += sizeof(uint64_t); |
968 | ||
969 | if (i == r3) { | |
970 | break; | |
971 | } | |
972 | } | |
973 | } | |
974 | ||
19b0516f | 975 | void HELPER(stctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3) |
8ef7f78e BS |
976 | { |
977 | int i; | |
978 | uint64_t dest = a2; | |
979 | ||
980 | for (i = r1;; i = (i + 1) % 16) { | |
19b0516f | 981 | cpu_stl_data(env, dest, env->cregs[i]); |
8ef7f78e BS |
982 | dest += sizeof(uint32_t); |
983 | ||
984 | if (i == r3) { | |
985 | break; | |
986 | } | |
987 | } | |
988 | } | |
989 | ||
990 | uint32_t HELPER(tprot)(uint64_t a1, uint64_t a2) | |
991 | { | |
992 | /* XXX implement */ | |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
997 | /* insert storage key extended */ | |
19b0516f | 998 | uint64_t HELPER(iske)(CPUS390XState *env, uint64_t r2) |
8ef7f78e | 999 | { |
19b0516f | 1000 | uint64_t addr = get_address(env, 0, 0, r2); |
8ef7f78e BS |
1001 | |
1002 | if (addr > ram_size) { | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | return env->storage_keys[addr / TARGET_PAGE_SIZE]; | |
1007 | } | |
1008 | ||
1009 | /* set storage key extended */ | |
19b0516f | 1010 | void HELPER(sske)(CPUS390XState *env, uint32_t r1, uint64_t r2) |
8ef7f78e | 1011 | { |
19b0516f | 1012 | uint64_t addr = get_address(env, 0, 0, r2); |
8ef7f78e BS |
1013 | |
1014 | if (addr > ram_size) { | |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | env->storage_keys[addr / TARGET_PAGE_SIZE] = r1; | |
1019 | } | |
1020 | ||
1021 | /* reset reference bit extended */ | |
19b0516f | 1022 | uint32_t HELPER(rrbe)(CPUS390XState *env, uint32_t r1, uint64_t r2) |
8ef7f78e BS |
1023 | { |
1024 | uint8_t re; | |
1025 | uint8_t key; | |
1026 | ||
1027 | if (r2 > ram_size) { | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | key = env->storage_keys[r2 / TARGET_PAGE_SIZE]; | |
1032 | re = key & (SK_R | SK_C); | |
1033 | env->storage_keys[r2 / TARGET_PAGE_SIZE] = (key & ~SK_R); | |
1034 | ||
1035 | /* | |
1036 | * cc | |
1037 | * | |
1038 | * 0 Reference bit zero; change bit zero | |
1039 | * 1 Reference bit zero; change bit one | |
1040 | * 2 Reference bit one; change bit zero | |
1041 | * 3 Reference bit one; change bit one | |
1042 | */ | |
1043 | ||
1044 | return re >> 1; | |
1045 | } | |
1046 | ||
1047 | /* compare and swap and purge */ | |
19b0516f | 1048 | uint32_t HELPER(csp)(CPUS390XState *env, uint32_t r1, uint32_t r2) |
8ef7f78e BS |
1049 | { |
1050 | uint32_t cc; | |
1051 | uint32_t o1 = env->regs[r1]; | |
19b0516f BS |
1052 | uint64_t a2 = get_address_31fix(env, r2) & ~3ULL; |
1053 | uint32_t o2 = cpu_ldl_data(env, a2); | |
8ef7f78e BS |
1054 | |
1055 | if (o1 == o2) { | |
19b0516f | 1056 | cpu_stl_data(env, a2, env->regs[(r1 + 1) & 15]); |
8ef7f78e BS |
1057 | if (env->regs[r2] & 0x3) { |
1058 | /* flush TLB / ALB */ | |
1059 | tlb_flush(env, 1); | |
1060 | } | |
1061 | cc = 0; | |
1062 | } else { | |
1063 | env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | o2; | |
1064 | cc = 1; | |
1065 | } | |
1066 | ||
1067 | return cc; | |
1068 | } | |
1069 | ||
19b0516f BS |
1070 | static uint32_t mvc_asc(CPUS390XState *env, int64_t l, uint64_t a1, |
1071 | uint64_t mode1, uint64_t a2, uint64_t mode2) | |
8ef7f78e BS |
1072 | { |
1073 | target_ulong src, dest; | |
1074 | int flags, cc = 0, i; | |
1075 | ||
1076 | if (!l) { | |
1077 | return 0; | |
1078 | } else if (l > 256) { | |
1079 | /* max 256 */ | |
1080 | l = 256; | |
1081 | cc = 3; | |
1082 | } | |
1083 | ||
1084 | if (mmu_translate(env, a1 & TARGET_PAGE_MASK, 1, mode1, &dest, &flags)) { | |
1085 | cpu_loop_exit(env); | |
1086 | } | |
1087 | dest |= a1 & ~TARGET_PAGE_MASK; | |
1088 | ||
1089 | if (mmu_translate(env, a2 & TARGET_PAGE_MASK, 0, mode2, &src, &flags)) { | |
1090 | cpu_loop_exit(env); | |
1091 | } | |
1092 | src |= a2 & ~TARGET_PAGE_MASK; | |
1093 | ||
1094 | /* XXX replace w/ memcpy */ | |
1095 | for (i = 0; i < l; i++) { | |
1096 | /* XXX be more clever */ | |
1097 | if ((((dest + i) & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) || | |
1098 | (((src + i) & TARGET_PAGE_MASK) != (src & TARGET_PAGE_MASK))) { | |
19b0516f | 1099 | mvc_asc(env, l - i, a1 + i, mode1, a2 + i, mode2); |
8ef7f78e BS |
1100 | break; |
1101 | } | |
1102 | stb_phys(dest + i, ldub_phys(src + i)); | |
1103 | } | |
1104 | ||
1105 | return cc; | |
1106 | } | |
1107 | ||
19b0516f | 1108 | uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) |
8ef7f78e BS |
1109 | { |
1110 | HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", | |
1111 | __func__, l, a1, a2); | |
1112 | ||
19b0516f | 1113 | return mvc_asc(env, l, a1, PSW_ASC_SECONDARY, a2, PSW_ASC_PRIMARY); |
8ef7f78e BS |
1114 | } |
1115 | ||
19b0516f | 1116 | uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2) |
8ef7f78e BS |
1117 | { |
1118 | HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n", | |
1119 | __func__, l, a1, a2); | |
1120 | ||
19b0516f | 1121 | return mvc_asc(env, l, a1, PSW_ASC_PRIMARY, a2, PSW_ASC_SECONDARY); |
8ef7f78e BS |
1122 | } |
1123 | ||
1124 | /* invalidate pte */ | |
19b0516f | 1125 | void HELPER(ipte)(CPUS390XState *env, uint64_t pte_addr, uint64_t vaddr) |
8ef7f78e BS |
1126 | { |
1127 | uint64_t page = vaddr & TARGET_PAGE_MASK; | |
1128 | uint64_t pte = 0; | |
1129 | ||
1130 | /* XXX broadcast to other CPUs */ | |
1131 | ||
1132 | /* XXX Linux is nice enough to give us the exact pte address. | |
1133 | According to spec we'd have to find it out ourselves */ | |
1134 | /* XXX Linux is fine with overwriting the pte, the spec requires | |
1135 | us to only set the invalid bit */ | |
1136 | stq_phys(pte_addr, pte | _PAGE_INVALID); | |
1137 | ||
1138 | /* XXX we exploit the fact that Linux passes the exact virtual | |
1139 | address here - it's not obliged to! */ | |
1140 | tlb_flush_page(env, page); | |
1141 | ||
1142 | /* XXX 31-bit hack */ | |
1143 | if (page & 0x80000000) { | |
1144 | tlb_flush_page(env, page & ~0x80000000); | |
1145 | } else { | |
1146 | tlb_flush_page(env, page | 0x80000000); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | /* flush local tlb */ | |
19b0516f | 1151 | void HELPER(ptlb)(CPUS390XState *env) |
8ef7f78e BS |
1152 | { |
1153 | tlb_flush(env, 1); | |
1154 | } | |
1155 | ||
1156 | /* store using real address */ | |
19b0516f | 1157 | void HELPER(stura)(CPUS390XState *env, uint64_t addr, uint32_t v1) |
8ef7f78e | 1158 | { |
19b0516f | 1159 | stw_phys(get_address(env, 0, 0, addr), v1); |
8ef7f78e BS |
1160 | } |
1161 | ||
1162 | /* load real address */ | |
19b0516f | 1163 | uint32_t HELPER(lra)(CPUS390XState *env, uint64_t addr, uint32_t r1) |
8ef7f78e BS |
1164 | { |
1165 | uint32_t cc = 0; | |
1166 | int old_exc = env->exception_index; | |
1167 | uint64_t asc = env->psw.mask & PSW_MASK_ASC; | |
1168 | uint64_t ret; | |
1169 | int flags; | |
1170 | ||
1171 | /* XXX incomplete - has more corner cases */ | |
1172 | if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) { | |
1173 | program_interrupt(env, PGM_SPECIAL_OP, 2); | |
1174 | } | |
1175 | ||
1176 | env->exception_index = old_exc; | |
1177 | if (mmu_translate(env, addr, 0, asc, &ret, &flags)) { | |
1178 | cc = 3; | |
1179 | } | |
1180 | if (env->exception_index == EXCP_PGM) { | |
1181 | ret = env->int_pgm_code | 0x80000000; | |
1182 | } else { | |
1183 | ret |= addr & ~TARGET_PAGE_MASK; | |
1184 | } | |
1185 | env->exception_index = old_exc; | |
1186 | ||
1187 | if (!(env->psw.mask & PSW_MASK_64)) { | |
1188 | env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | | |
1189 | (ret & 0xffffffffULL); | |
1190 | } else { | |
1191 | env->regs[r1] = ret; | |
1192 | } | |
1193 | ||
1194 | return cc; | |
1195 | } | |
1196 | ||
1197 | #endif |