2 * S/390 memory access helper routines
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2009 Alexander Graf
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.
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.
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/>.
21 #include "qemu/osdep.h"
23 #include "exec/address-spaces.h"
24 #include "exec/helper-proto.h"
25 #include "exec/exec-all.h"
26 #include "exec/cpu_ldst.h"
27 #include "qemu/int128.h"
29 #if !defined(CONFIG_USER_ONLY)
30 #include "hw/s390x/storage-keys.h"
33 /*****************************************************************************/
35 #if !defined(CONFIG_USER_ONLY)
37 /* try to fill the TLB and return an exception if error. If retaddr is
38 NULL, it means that the function was called in C code (i.e. not
39 from generated code or from helper.c) */
40 /* XXX: fix it to restore all registers */
41 void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type,
42 int mmu_idx, uintptr_t retaddr)
44 int ret = s390_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx);
45 if (unlikely(ret != 0)) {
46 cpu_loop_exit_restore(cs, retaddr);
52 /* #define DEBUG_HELPER */
54 #define HELPER_LOG(x...) qemu_log(x)
56 #define HELPER_LOG(x...)
59 /* Reduce the length so that addr + len doesn't cross a page boundary. */
60 static inline uint32_t adj_len_to_page(uint32_t len, uint64_t addr)
62 #ifndef CONFIG_USER_ONLY
63 if ((addr & ~TARGET_PAGE_MASK) + len - 1 >= TARGET_PAGE_SIZE) {
64 return -addr & ~TARGET_PAGE_MASK;
70 static void fast_memset(CPUS390XState *env, uint64_t dest, uint8_t byte,
71 uint32_t l, uintptr_t ra)
73 int mmu_idx = cpu_mmu_index(env, false);
76 void *p = tlb_vaddr_to_host(env, dest, MMU_DATA_STORE, mmu_idx);
78 /* Access to the whole page in write mode granted. */
79 uint32_t l_adj = adj_len_to_page(l, dest);
80 memset(p, byte, l_adj);
84 /* We failed to get access to the whole page. The next write
85 access will likely fill the QEMU TLB for the next iteration. */
86 cpu_stb_data_ra(env, dest, byte, ra);
93 static void fast_memmove(CPUS390XState *env, uint64_t dest, uint64_t src,
94 uint32_t l, uintptr_t ra)
96 int mmu_idx = cpu_mmu_index(env, false);
99 void *src_p = tlb_vaddr_to_host(env, src, MMU_DATA_LOAD, mmu_idx);
100 void *dest_p = tlb_vaddr_to_host(env, dest, MMU_DATA_STORE, mmu_idx);
101 if (src_p && dest_p) {
102 /* Access to both whole pages granted. */
103 uint32_t l_adj = adj_len_to_page(l, src);
104 l_adj = adj_len_to_page(l_adj, dest);
105 memmove(dest_p, src_p, l_adj);
110 /* We failed to get access to one or both whole pages. The next
111 read or write access will likely fill the QEMU TLB for the
113 cpu_stb_data_ra(env, dest, cpu_ldub_data_ra(env, src, ra), ra);
122 static uint32_t do_helper_nc(CPUS390XState *env, uint32_t l, uint64_t dest,
123 uint64_t src, uintptr_t ra)
128 HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
129 __func__, l, dest, src);
131 for (i = 0; i <= l; i++) {
132 uint8_t x = cpu_ldub_data_ra(env, src + i, ra);
133 x &= cpu_ldub_data_ra(env, dest + i, ra);
135 cpu_stb_data_ra(env, dest + i, x, ra);
140 uint32_t HELPER(nc)(CPUS390XState *env, uint32_t l, uint64_t dest,
143 return do_helper_nc(env, l, dest, src, GETPC());
147 static uint32_t do_helper_xc(CPUS390XState *env, uint32_t l, uint64_t dest,
148 uint64_t src, uintptr_t ra)
153 HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
154 __func__, l, dest, src);
156 /* xor with itself is the same as memset(0) */
158 fast_memset(env, dest, 0, l + 1, ra);
162 for (i = 0; i <= l; i++) {
163 uint8_t x = cpu_ldub_data_ra(env, src + i, ra);
164 x ^= cpu_ldub_data_ra(env, dest + i, ra);
166 cpu_stb_data_ra(env, dest + i, x, ra);
171 uint32_t HELPER(xc)(CPUS390XState *env, uint32_t l, uint64_t dest,
174 return do_helper_xc(env, l, dest, src, GETPC());
178 static uint32_t do_helper_oc(CPUS390XState *env, uint32_t l, uint64_t dest,
179 uint64_t src, uintptr_t ra)
184 HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
185 __func__, l, dest, src);
187 for (i = 0; i <= l; i++) {
188 uint8_t x = cpu_ldub_data_ra(env, src + i, ra);
189 x |= cpu_ldub_data_ra(env, dest + i, ra);
191 cpu_stb_data_ra(env, dest + i, x, ra);
196 uint32_t HELPER(oc)(CPUS390XState *env, uint32_t l, uint64_t dest,
199 return do_helper_oc(env, l, dest, src, GETPC());
203 static void do_helper_mvc(CPUS390XState *env, uint32_t l, uint64_t dest,
204 uint64_t src, uintptr_t ra)
208 HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
209 __func__, l, dest, src);
211 /* mvc with source pointing to the byte after the destination is the
212 same as memset with the first source byte */
213 if (dest == src + 1) {
214 fast_memset(env, dest, cpu_ldub_data_ra(env, src, ra), l + 1, ra);
218 /* mvc and memmove do not behave the same when areas overlap! */
219 if (dest < src || src + l < dest) {
220 fast_memmove(env, dest, src, l + 1, ra);
224 /* slow version with byte accesses which always work */
225 for (i = 0; i <= l; i++) {
226 cpu_stb_data_ra(env, dest + i, cpu_ldub_data_ra(env, src + i, ra), ra);
230 void HELPER(mvc)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src)
232 do_helper_mvc(env, l, dest, src, GETPC());
235 /* compare unsigned byte arrays */
236 static uint32_t do_helper_clc(CPUS390XState *env, uint32_t l, uint64_t s1,
237 uint64_t s2, uintptr_t ra)
242 HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n",
243 __func__, l, s1, s2);
245 for (i = 0; i <= l; i++) {
246 uint8_t x = cpu_ldub_data_ra(env, s1 + i, ra);
247 uint8_t y = cpu_ldub_data_ra(env, s2 + i, ra);
248 HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y);
262 uint32_t HELPER(clc)(CPUS390XState *env, uint32_t l, uint64_t s1, uint64_t s2)
264 return do_helper_clc(env, l, s1, s2, GETPC());
267 /* compare logical under mask */
268 uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask,
271 uintptr_t ra = GETPC();
274 HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1,
279 uint8_t d = cpu_ldub_data_ra(env, addr, ra);
280 uint8_t r = extract32(r1, 24, 8);
281 HELPER_LOG("mask 0x%x %02x/%02x (0x%" PRIx64 ") ", mask, r, d,
292 mask = (mask << 1) & 0xf;
300 static inline uint64_t fix_address(CPUS390XState *env, uint64_t a)
303 if (!(env->psw.mask & PSW_MASK_64)) {
309 static inline uint64_t get_address(CPUS390XState *env, int x2, int b2, int d2)
318 return fix_address(env, r);
321 static inline uint64_t get_address_31fix(CPUS390XState *env, int reg)
323 return fix_address(env, env->regs[reg]);
326 /* search string (c is byte to search, r2 is string, r1 end of string) */
327 uint64_t HELPER(srst)(CPUS390XState *env, uint64_t r0, uint64_t end,
330 uintptr_t ra = GETPC();
334 str = fix_address(env, str);
335 end = fix_address(env, end);
337 /* Assume for now that R2 is unmodified. */
340 /* Lest we fail to service interrupts in a timely manner, limit the
341 amount of work we're willing to do. For now, let's cap at 8k. */
342 for (len = 0; len < 0x2000; ++len) {
343 if (str + len == end) {
344 /* Character not found. R1 & R2 are unmodified. */
348 v = cpu_ldub_data_ra(env, str + len, ra);
350 /* Character found. Set R1 to the location; R2 is unmodified. */
356 /* CPU-determined bytes processed. Advance R2 to next byte to process. */
357 env->retxl = str + len;
362 /* unsigned string compare (c is string terminator) */
363 uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
365 uintptr_t ra = GETPC();
369 s1 = fix_address(env, s1);
370 s2 = fix_address(env, s2);
372 /* Lest we fail to service interrupts in a timely manner, limit the
373 amount of work we're willing to do. For now, let's cap at 8k. */
374 for (len = 0; len < 0x2000; ++len) {
375 uint8_t v1 = cpu_ldub_data_ra(env, s1 + len, ra);
376 uint8_t v2 = cpu_ldub_data_ra(env, s2 + len, ra);
379 /* Equal. CC=0, and don't advance the registers. */
385 /* Unequal. CC={1,2}, and advance the registers. Note that
386 the terminator need not be zero, but the string that contains
387 the terminator is by definition "low". */
388 env->cc_op = (v1 == c ? 1 : v2 == c ? 2 : v1 < v2 ? 1 : 2);
389 env->retxl = s2 + len;
394 /* CPU-determined bytes equal; advance the registers. */
396 env->retxl = s2 + len;
401 uint32_t HELPER(mvpg)(CPUS390XState *env, uint64_t r0, uint64_t r1, uint64_t r2)
403 /* ??? missing r0 handling, which includes access keys, but more
404 importantly optional suppression of the exception! */
405 fast_memmove(env, r1, r2, TARGET_PAGE_SIZE, GETPC());
406 return 0; /* data moved */
409 /* string copy (c is string terminator) */
410 uint64_t HELPER(mvst)(CPUS390XState *env, uint64_t c, uint64_t d, uint64_t s)
412 uintptr_t ra = GETPC();
416 d = fix_address(env, d);
417 s = fix_address(env, s);
419 /* Lest we fail to service interrupts in a timely manner, limit the
420 amount of work we're willing to do. For now, let's cap at 8k. */
421 for (len = 0; len < 0x2000; ++len) {
422 uint8_t v = cpu_ldub_data_ra(env, s + len, ra);
423 cpu_stb_data_ra(env, d + len, v, ra);
425 /* Complete. Set CC=1 and advance R1. */
432 /* Incomplete. Set CC=3 and signal to advance R1 and R2. */
434 env->retxl = s + len;
438 static uint32_t helper_icm(CPUS390XState *env, uint32_t r1, uint64_t address,
441 int pos = 24; /* top of the lower half of r1 */
442 uint64_t rmask = 0xff000000ULL;
449 env->regs[r1] &= ~rmask;
450 val = cpu_ldub_data(env, address);
451 if ((val & 0x80) && !ccd) {
455 if (val && cc == 0) {
458 env->regs[r1] |= (uint64_t)val << pos;
461 mask = (mask << 1) & 0xf;
469 /* load access registers r1 to r3 from memory at a2 */
470 void HELPER(lam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
472 uintptr_t ra = GETPC();
475 for (i = r1;; i = (i + 1) % 16) {
476 env->aregs[i] = cpu_ldl_data_ra(env, a2, ra);
485 /* store access registers r1 to r3 in memory at a2 */
486 void HELPER(stam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
488 uintptr_t ra = GETPC();
491 for (i = r1;; i = (i + 1) % 16) {
492 cpu_stl_data_ra(env, a2, env->aregs[i], ra);
502 uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2)
504 uintptr_t ra = GETPC();
505 uint64_t destlen = env->regs[r1 + 1] & 0xffffff;
506 uint64_t dest = get_address_31fix(env, r1);
507 uint64_t srclen = env->regs[r2 + 1] & 0xffffff;
508 uint64_t src = get_address_31fix(env, r2);
509 uint8_t pad = env->regs[r2 + 1] >> 24;
513 if (destlen == srclen) {
515 } else if (destlen < srclen) {
521 if (srclen > destlen) {
525 for (; destlen && srclen; src++, dest++, destlen--, srclen--) {
526 v = cpu_ldub_data_ra(env, src, ra);
527 cpu_stb_data_ra(env, dest, v, ra);
530 for (; destlen; dest++, destlen--) {
531 cpu_stb_data_ra(env, dest, pad, ra);
534 env->regs[r1 + 1] = destlen;
535 /* can't use srclen here, we trunc'ed it */
536 env->regs[r2 + 1] -= src - env->regs[r2];
537 env->regs[r1] = dest;
543 /* move long extended another memcopy insn with more bells and whistles */
544 uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
547 uintptr_t ra = GETPC();
548 uint64_t destlen = env->regs[r1 + 1];
549 uint64_t dest = env->regs[r1];
550 uint64_t srclen = env->regs[r3 + 1];
551 uint64_t src = env->regs[r3];
552 uint8_t pad = a2 & 0xff;
556 if (!(env->psw.mask & PSW_MASK_64)) {
557 destlen = (uint32_t)destlen;
558 srclen = (uint32_t)srclen;
563 if (destlen == srclen) {
565 } else if (destlen < srclen) {
571 if (srclen > destlen) {
575 for (; destlen && srclen; src++, dest++, destlen--, srclen--) {
576 v = cpu_ldub_data_ra(env, src, ra);
577 cpu_stb_data_ra(env, dest, v, ra);
580 for (; destlen; dest++, destlen--) {
581 cpu_stb_data_ra(env, dest, pad, ra);
584 env->regs[r1 + 1] = destlen;
585 /* can't use srclen here, we trunc'ed it */
586 /* FIXME: 31-bit mode! */
587 env->regs[r3 + 1] -= src - env->regs[r3];
588 env->regs[r1] = dest;
594 /* compare logical long extended memcompare insn with padding */
595 uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
598 uint64_t destlen = env->regs[r1 + 1];
599 uint64_t dest = get_address_31fix(env, r1);
600 uint64_t srclen = env->regs[r3 + 1];
601 uint64_t src = get_address_31fix(env, r3);
602 uint8_t pad = a2 & 0xff;
603 uint8_t v1 = 0, v2 = 0;
606 if (!(destlen || srclen)) {
610 if (srclen > destlen) {
614 for (; destlen || srclen; src++, dest++, destlen--, srclen--) {
615 v1 = srclen ? cpu_ldub_data(env, src) : pad;
616 v2 = destlen ? cpu_ldub_data(env, dest) : pad;
618 cc = (v1 < v2) ? 1 : 2;
623 env->regs[r1 + 1] = destlen;
624 /* can't use srclen here, we trunc'ed it */
625 env->regs[r3 + 1] -= src - env->regs[r3];
626 env->regs[r1] = dest;
633 uint64_t HELPER(cksm)(CPUS390XState *env, uint64_t r1,
634 uint64_t src, uint64_t src_len)
636 uint64_t max_len, len;
637 uint64_t cksm = (uint32_t)r1;
639 /* Lest we fail to service interrupts in a timely manner, limit the
640 amount of work we're willing to do. For now, let's cap at 8k. */
641 max_len = (src_len > 0x2000 ? 0x2000 : src_len);
643 /* Process full words as available. */
644 for (len = 0; len + 4 <= max_len; len += 4, src += 4) {
645 cksm += (uint32_t)cpu_ldl_data(env, src);
648 switch (max_len - len) {
650 cksm += cpu_ldub_data(env, src) << 24;
654 cksm += cpu_lduw_data(env, src) << 16;
658 cksm += cpu_lduw_data(env, src) << 16;
659 cksm += cpu_ldub_data(env, src + 2) << 8;
664 /* Fold the carry from the checksum. Note that we can see carry-out
665 during folding more than once (but probably not more than twice). */
666 while (cksm > 0xffffffffull) {
667 cksm = (uint32_t)cksm + (cksm >> 32);
670 /* Indicate whether or not we've processed everything. */
671 env->cc_op = (len == src_len ? 0 : 3);
673 /* Return both cksm and processed length. */
678 void HELPER(unpk)(CPUS390XState *env, uint32_t len, uint64_t dest,
681 int len_dest = len >> 4;
682 int len_src = len & 0xf;
684 int second_nibble = 0;
689 /* last byte is special, it only flips the nibbles */
690 b = cpu_ldub_data(env, src);
691 cpu_stb_data(env, dest, (b << 4) | (b >> 4));
695 /* now pad every nibble with 0xf0 */
697 while (len_dest > 0) {
698 uint8_t cur_byte = 0;
701 cur_byte = cpu_ldub_data(env, src);
707 /* only advance one nibble at a time */
713 second_nibble = !second_nibble;
716 cur_byte = (cur_byte & 0xf);
720 cpu_stb_data(env, dest, cur_byte);
724 void HELPER(tr)(CPUS390XState *env, uint32_t len, uint64_t array,
729 for (i = 0; i <= len; i++) {
730 uint8_t byte = cpu_ldub_data(env, array + i);
731 uint8_t new_byte = cpu_ldub_data(env, trans + byte);
733 cpu_stb_data(env, array + i, new_byte);
737 uint64_t HELPER(tre)(CPUS390XState *env, uint64_t array,
738 uint64_t len, uint64_t trans)
740 uint8_t end = env->regs[0] & 0xff;
744 if (!(env->psw.mask & PSW_MASK_64)) {
749 /* Lest we fail to service interrupts in a timely manner, limit the
750 amount of work we're willing to do. For now, let's cap at 8k. */
758 for (i = 0; i < l; i++) {
759 uint8_t byte, new_byte;
761 byte = cpu_ldub_data(env, array + i);
768 new_byte = cpu_ldub_data(env, trans + byte);
769 cpu_stb_data(env, array + i, new_byte);
772 env->retxl = len - i;
776 uint32_t HELPER(trt)(CPUS390XState *env, uint32_t len, uint64_t array,
782 for (i = 0; i <= len; i++) {
783 uint8_t byte = cpu_ldub_data(env, array + i);
784 uint8_t sbyte = cpu_ldub_data(env, trans + byte);
787 env->regs[1] = array + i;
788 env->regs[2] = (env->regs[2] & ~0xff) | sbyte;
789 cc = (i == len) ? 2 : 1;
797 void HELPER(cdsg)(CPUS390XState *env, uint64_t addr,
798 uint32_t r1, uint32_t r3)
800 uintptr_t ra = GETPC();
801 Int128 cmpv = int128_make128(env->regs[r1 + 1], env->regs[r1]);
802 Int128 newv = int128_make128(env->regs[r3 + 1], env->regs[r3]);
807 #ifndef CONFIG_ATOMIC128
808 cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);
810 int mem_idx = cpu_mmu_index(env, false);
811 TCGMemOpIdx oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx);
812 oldv = helper_atomic_cmpxchgo_be_mmu(env, addr, cmpv, newv, oi, ra);
813 fail = !int128_eq(oldv, cmpv);
818 oldh = cpu_ldq_data_ra(env, addr + 0, ra);
819 oldl = cpu_ldq_data_ra(env, addr + 8, ra);
821 oldv = int128_make128(oldl, oldh);
822 fail = !int128_eq(oldv, cmpv);
827 cpu_stq_data_ra(env, addr + 0, int128_gethi(newv), ra);
828 cpu_stq_data_ra(env, addr + 8, int128_getlo(newv), ra);
832 env->regs[r1] = int128_gethi(oldv);
833 env->regs[r1 + 1] = int128_getlo(oldv);
836 #if !defined(CONFIG_USER_ONLY)
837 void HELPER(lctlg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
839 S390CPU *cpu = s390_env_get_cpu(env);
840 bool PERchanged = false;
845 for (i = r1;; i = (i + 1) % 16) {
846 val = cpu_ldq_data(env, src);
847 if (env->cregs[i] != val && i >= 9 && i <= 11) {
851 HELPER_LOG("load ctl %d from 0x%" PRIx64 " == 0x%" PRIx64 "\n",
852 i, src, env->cregs[i]);
853 src += sizeof(uint64_t);
860 if (PERchanged && env->psw.mask & PSW_MASK_PER) {
861 s390_cpu_recompute_watchpoints(CPU(cpu));
867 void HELPER(lctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
869 S390CPU *cpu = s390_env_get_cpu(env);
870 bool PERchanged = false;
875 for (i = r1;; i = (i + 1) % 16) {
876 val = cpu_ldl_data(env, src);
877 if ((uint32_t)env->cregs[i] != val && i >= 9 && i <= 11) {
880 env->cregs[i] = (env->cregs[i] & 0xFFFFFFFF00000000ULL) | val;
881 src += sizeof(uint32_t);
888 if (PERchanged && env->psw.mask & PSW_MASK_PER) {
889 s390_cpu_recompute_watchpoints(CPU(cpu));
895 void HELPER(stctg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
900 for (i = r1;; i = (i + 1) % 16) {
901 cpu_stq_data(env, dest, env->cregs[i]);
902 dest += sizeof(uint64_t);
910 void HELPER(stctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
915 for (i = r1;; i = (i + 1) % 16) {
916 cpu_stl_data(env, dest, env->cregs[i]);
917 dest += sizeof(uint32_t);
925 uint32_t HELPER(testblock)(CPUS390XState *env, uint64_t real_addr)
927 CPUState *cs = CPU(s390_env_get_cpu(env));
931 real_addr = fix_address(env, real_addr);
932 abs_addr = mmu_real2abs(env, real_addr) & TARGET_PAGE_MASK;
933 if (!address_space_access_valid(&address_space_memory, abs_addr,
934 TARGET_PAGE_SIZE, true)) {
935 program_interrupt(env, PGM_ADDRESSING, 4);
939 /* Check low-address protection */
940 if ((env->cregs[0] & CR0_LOWPROT) && real_addr < 0x2000) {
941 program_interrupt(env, PGM_PROTECTION, 4);
945 for (i = 0; i < TARGET_PAGE_SIZE; i += 8) {
946 stq_phys(cs->as, abs_addr + i, 0);
952 uint32_t HELPER(tprot)(uint64_t a1, uint64_t a2)
959 /* insert storage key extended */
960 uint64_t HELPER(iske)(CPUS390XState *env, uint64_t r2)
962 static S390SKeysState *ss;
963 static S390SKeysClass *skeyclass;
964 uint64_t addr = get_address(env, 0, 0, r2);
967 if (addr > ram_size) {
972 ss = s390_get_skeys_device();
973 skeyclass = S390_SKEYS_GET_CLASS(ss);
976 if (skeyclass->get_skeys(ss, addr / TARGET_PAGE_SIZE, 1, &key)) {
982 /* set storage key extended */
983 void HELPER(sske)(CPUS390XState *env, uint64_t r1, uint64_t r2)
985 static S390SKeysState *ss;
986 static S390SKeysClass *skeyclass;
987 uint64_t addr = get_address(env, 0, 0, r2);
990 if (addr > ram_size) {
995 ss = s390_get_skeys_device();
996 skeyclass = S390_SKEYS_GET_CLASS(ss);
1000 skeyclass->set_skeys(ss, addr / TARGET_PAGE_SIZE, 1, &key);
1003 /* reset reference bit extended */
1004 uint32_t HELPER(rrbe)(CPUS390XState *env, uint64_t r2)
1006 static S390SKeysState *ss;
1007 static S390SKeysClass *skeyclass;
1010 if (r2 > ram_size) {
1014 if (unlikely(!ss)) {
1015 ss = s390_get_skeys_device();
1016 skeyclass = S390_SKEYS_GET_CLASS(ss);
1019 if (skeyclass->get_skeys(ss, r2 / TARGET_PAGE_SIZE, 1, &key)) {
1023 re = key & (SK_R | SK_C);
1026 if (skeyclass->set_skeys(ss, r2 / TARGET_PAGE_SIZE, 1, &key)) {
1033 * 0 Reference bit zero; change bit zero
1034 * 1 Reference bit zero; change bit one
1035 * 2 Reference bit one; change bit zero
1036 * 3 Reference bit one; change bit one
1042 /* compare and swap and purge */
1043 uint32_t HELPER(csp)(CPUS390XState *env, uint32_t r1, uint64_t r2)
1045 S390CPU *cpu = s390_env_get_cpu(env);
1047 uint32_t o1 = env->regs[r1];
1048 uint64_t a2 = r2 & ~3ULL;
1049 uint32_t o2 = cpu_ldl_data(env, a2);
1052 cpu_stl_data(env, a2, env->regs[(r1 + 1) & 15]);
1054 /* flush TLB / ALB */
1055 tlb_flush(CPU(cpu));
1059 env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | o2;
1066 uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
1070 HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
1071 __func__, l, a1, a2);
1079 /* XXX replace w/ memcpy */
1080 for (i = 0; i < l; i++) {
1081 cpu_stb_secondary(env, a1 + i, cpu_ldub_primary(env, a2 + i));
1087 uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
1091 HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
1092 __func__, l, a1, a2);
1100 /* XXX replace w/ memcpy */
1101 for (i = 0; i < l; i++) {
1102 cpu_stb_primary(env, a1 + i, cpu_ldub_secondary(env, a2 + i));
1108 /* invalidate pte */
1109 void HELPER(ipte)(CPUS390XState *env, uint64_t pte_addr, uint64_t vaddr)
1111 CPUState *cs = CPU(s390_env_get_cpu(env));
1112 uint64_t page = vaddr & TARGET_PAGE_MASK;
1115 /* XXX broadcast to other CPUs */
1117 /* XXX Linux is nice enough to give us the exact pte address.
1118 According to spec we'd have to find it out ourselves */
1119 /* XXX Linux is fine with overwriting the pte, the spec requires
1120 us to only set the invalid bit */
1121 stq_phys(cs->as, pte_addr, pte | _PAGE_INVALID);
1123 /* XXX we exploit the fact that Linux passes the exact virtual
1124 address here - it's not obliged to! */
1125 tlb_flush_page(cs, page);
1127 /* XXX 31-bit hack */
1128 if (page & 0x80000000) {
1129 tlb_flush_page(cs, page & ~0x80000000);
1131 tlb_flush_page(cs, page | 0x80000000);
1135 /* flush local tlb */
1136 void HELPER(ptlb)(CPUS390XState *env)
1138 S390CPU *cpu = s390_env_get_cpu(env);
1140 tlb_flush(CPU(cpu));
1143 /* load using real address */
1144 uint64_t HELPER(lura)(CPUS390XState *env, uint64_t addr)
1146 CPUState *cs = CPU(s390_env_get_cpu(env));
1148 return (uint32_t)ldl_phys(cs->as, get_address(env, 0, 0, addr));
1151 uint64_t HELPER(lurag)(CPUS390XState *env, uint64_t addr)
1153 CPUState *cs = CPU(s390_env_get_cpu(env));
1155 return ldq_phys(cs->as, get_address(env, 0, 0, addr));
1158 /* store using real address */
1159 void HELPER(stura)(CPUS390XState *env, uint64_t addr, uint64_t v1)
1161 CPUState *cs = CPU(s390_env_get_cpu(env));
1163 stl_phys(cs->as, get_address(env, 0, 0, addr), (uint32_t)v1);
1165 if ((env->psw.mask & PSW_MASK_PER) &&
1166 (env->cregs[9] & PER_CR9_EVENT_STORE) &&
1167 (env->cregs[9] & PER_CR9_EVENT_STORE_REAL)) {
1168 /* PSW is saved just before calling the helper. */
1169 env->per_address = env->psw.addr;
1170 env->per_perc_atmid = PER_CODE_EVENT_STORE_REAL | get_per_atmid(env);
1174 void HELPER(sturg)(CPUS390XState *env, uint64_t addr, uint64_t v1)
1176 CPUState *cs = CPU(s390_env_get_cpu(env));
1178 stq_phys(cs->as, get_address(env, 0, 0, addr), v1);
1180 if ((env->psw.mask & PSW_MASK_PER) &&
1181 (env->cregs[9] & PER_CR9_EVENT_STORE) &&
1182 (env->cregs[9] & PER_CR9_EVENT_STORE_REAL)) {
1183 /* PSW is saved just before calling the helper. */
1184 env->per_address = env->psw.addr;
1185 env->per_perc_atmid = PER_CODE_EVENT_STORE_REAL | get_per_atmid(env);
1189 /* load real address */
1190 uint64_t HELPER(lra)(CPUS390XState *env, uint64_t addr)
1192 CPUState *cs = CPU(s390_env_get_cpu(env));
1194 int old_exc = cs->exception_index;
1195 uint64_t asc = env->psw.mask & PSW_MASK_ASC;
1199 /* XXX incomplete - has more corner cases */
1200 if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) {
1201 program_interrupt(env, PGM_SPECIAL_OP, 2);
1204 cs->exception_index = old_exc;
1205 if (mmu_translate(env, addr, 0, asc, &ret, &flags, true)) {
1208 if (cs->exception_index == EXCP_PGM) {
1209 ret = env->int_pgm_code | 0x80000000;
1211 ret |= addr & ~TARGET_PAGE_MASK;
1213 cs->exception_index = old_exc;
1220 /* execute instruction
1221 this instruction executes an insn modified with the contents of r1
1222 it does not change the executed instruction in memory
1223 it does not change the program counter
1224 in other words: tricky...
1225 currently implemented by interpreting the cases it is most commonly used.
1227 uint32_t HELPER(ex)(CPUS390XState *env, uint32_t cc, uint64_t v1,
1228 uint64_t addr, uint64_t ret)
1230 S390CPU *cpu = s390_env_get_cpu(env);
1231 uint16_t insn = cpu_lduw_code(env, addr);
1233 HELPER_LOG("%s: v1 0x%lx addr 0x%lx insn 0x%x\n", __func__, v1, addr,
1235 if ((insn & 0xf0ff) == 0xd000) {
1236 uint32_t l, insn2, b1, b2, d1, d2;
1239 insn2 = cpu_ldl_code(env, addr + 2);
1240 b1 = (insn2 >> 28) & 0xf;
1241 b2 = (insn2 >> 12) & 0xf;
1242 d1 = (insn2 >> 16) & 0xfff;
1244 switch (insn & 0xf00) {
1246 do_helper_mvc(env, l, get_address(env, 0, b1, d1),
1247 get_address(env, 0, b2, d2), 0);
1250 cc = do_helper_nc(env, l, get_address(env, 0, b1, d1),
1251 get_address(env, 0, b2, d2), 0);
1254 cc = do_helper_clc(env, l, get_address(env, 0, b1, d1),
1255 get_address(env, 0, b2, d2), 0);
1258 cc = do_helper_oc(env, l, get_address(env, 0, b1, d1),
1259 get_address(env, 0, b2, d2), 0);
1262 cc = do_helper_xc(env, l, get_address(env, 0, b1, d1),
1263 get_address(env, 0, b2, d2), 0);
1266 helper_tr(env, l, get_address(env, 0, b1, d1),
1267 get_address(env, 0, b2, d2));
1270 cc = helper_trt(env, l, get_address(env, 0, b1, d1),
1271 get_address(env, 0, b2, d2));
1276 } else if ((insn & 0xff00) == 0x0a00) {
1277 /* supervisor call */
1278 HELPER_LOG("%s: svc %ld via execute\n", __func__, (insn | v1) & 0xff);
1279 env->psw.addr = ret - 4;
1280 env->int_svc_code = (insn | v1) & 0xff;
1281 env->int_svc_ilen = 4;
1282 helper_exception(env, EXCP_SVC);
1283 } else if ((insn & 0xff00) == 0xbf00) {
1284 uint32_t insn2, r1, r3, b2, d2;
1286 insn2 = cpu_ldl_code(env, addr + 2);
1287 r1 = (insn2 >> 20) & 0xf;
1288 r3 = (insn2 >> 16) & 0xf;
1289 b2 = (insn2 >> 12) & 0xf;
1291 cc = helper_icm(env, r1, get_address(env, 0, b2, d2), r3);
1295 "EXECUTE on instruction prefix 0x%x not implemented\n",