1198 lines
30 KiB
C
1198 lines
30 KiB
C
/*
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* S/390 memory access helper routines
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*
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* Copyright (c) 2009 Ulrich Hecht
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* Copyright (c) 2009 Alexander Graf
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cpu.h"
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#include "helper.h"
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/*****************************************************************************/
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/* Softmmu support */
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#if !defined(CONFIG_USER_ONLY)
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#include "exec/softmmu_exec.h"
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#define MMUSUFFIX _mmu
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#define SHIFT 0
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#include "exec/softmmu_template.h"
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#define SHIFT 1
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#include "exec/softmmu_template.h"
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#define SHIFT 2
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#include "exec/softmmu_template.h"
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#define SHIFT 3
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#include "exec/softmmu_template.h"
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/* try to fill the TLB and return an exception if error. If retaddr is
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NULL, it means that the function was called in C code (i.e. not
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from generated code or from helper.c) */
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/* XXX: fix it to restore all registers */
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void tlb_fill(CPUS390XState *env, target_ulong addr, int is_write, int mmu_idx,
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uintptr_t retaddr)
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{
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int ret;
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ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx);
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if (unlikely(ret != 0)) {
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if (likely(retaddr)) {
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/* now we have a real cpu fault */
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cpu_restore_state(env, retaddr);
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}
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cpu_loop_exit(env);
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}
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}
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#endif
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/* #define DEBUG_HELPER */
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#ifdef DEBUG_HELPER
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#define HELPER_LOG(x...) qemu_log(x)
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#else
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#define HELPER_LOG(x...)
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#endif
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#ifndef CONFIG_USER_ONLY
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static void mvc_fast_memset(CPUS390XState *env, uint32_t l, uint64_t dest,
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uint8_t byte)
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{
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hwaddr dest_phys;
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hwaddr len = l;
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void *dest_p;
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uint64_t asc = env->psw.mask & PSW_MASK_ASC;
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int flags;
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if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) {
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cpu_stb_data(env, dest, byte);
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cpu_abort(env, "should never reach here");
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}
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dest_phys |= dest & ~TARGET_PAGE_MASK;
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dest_p = cpu_physical_memory_map(dest_phys, &len, 1);
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memset(dest_p, byte, len);
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cpu_physical_memory_unmap(dest_p, 1, len, len);
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}
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static void mvc_fast_memmove(CPUS390XState *env, uint32_t l, uint64_t dest,
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uint64_t src)
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{
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hwaddr dest_phys;
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hwaddr src_phys;
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hwaddr len = l;
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void *dest_p;
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void *src_p;
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uint64_t asc = env->psw.mask & PSW_MASK_ASC;
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int flags;
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if (mmu_translate(env, dest, 1, asc, &dest_phys, &flags)) {
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cpu_stb_data(env, dest, 0);
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cpu_abort(env, "should never reach here");
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}
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dest_phys |= dest & ~TARGET_PAGE_MASK;
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if (mmu_translate(env, src, 0, asc, &src_phys, &flags)) {
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cpu_ldub_data(env, src);
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cpu_abort(env, "should never reach here");
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}
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src_phys |= src & ~TARGET_PAGE_MASK;
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dest_p = cpu_physical_memory_map(dest_phys, &len, 1);
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src_p = cpu_physical_memory_map(src_phys, &len, 0);
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memmove(dest_p, src_p, len);
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cpu_physical_memory_unmap(dest_p, 1, len, len);
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cpu_physical_memory_unmap(src_p, 0, len, len);
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}
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#endif
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/* and on array */
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uint32_t HELPER(nc)(CPUS390XState *env, uint32_t l, uint64_t dest,
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uint64_t src)
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{
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int i;
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unsigned char x;
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uint32_t cc = 0;
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HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
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__func__, l, dest, src);
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for (i = 0; i <= l; i++) {
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x = cpu_ldub_data(env, dest + i) & cpu_ldub_data(env, src + i);
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if (x) {
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cc = 1;
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}
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cpu_stb_data(env, dest + i, x);
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}
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return cc;
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}
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/* xor on array */
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uint32_t HELPER(xc)(CPUS390XState *env, uint32_t l, uint64_t dest,
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uint64_t src)
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{
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int i;
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unsigned char x;
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uint32_t cc = 0;
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HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
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__func__, l, dest, src);
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#ifndef CONFIG_USER_ONLY
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/* xor with itself is the same as memset(0) */
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if ((l > 32) && (src == dest) &&
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(src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK)) {
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mvc_fast_memset(env, l + 1, dest, 0);
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return 0;
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}
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#else
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if (src == dest) {
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memset(g2h(dest), 0, l + 1);
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return 0;
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}
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#endif
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for (i = 0; i <= l; i++) {
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x = cpu_ldub_data(env, dest + i) ^ cpu_ldub_data(env, src + i);
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if (x) {
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cc = 1;
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}
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cpu_stb_data(env, dest + i, x);
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}
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return cc;
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}
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/* or on array */
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uint32_t HELPER(oc)(CPUS390XState *env, uint32_t l, uint64_t dest,
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uint64_t src)
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{
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int i;
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unsigned char x;
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uint32_t cc = 0;
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HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
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__func__, l, dest, src);
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for (i = 0; i <= l; i++) {
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x = cpu_ldub_data(env, dest + i) | cpu_ldub_data(env, src + i);
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if (x) {
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cc = 1;
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}
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cpu_stb_data(env, dest + i, x);
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}
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return cc;
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}
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/* memmove */
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void HELPER(mvc)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src)
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{
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int i = 0;
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int x = 0;
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uint32_t l_64 = (l + 1) / 8;
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HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n",
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__func__, l, dest, src);
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#ifndef CONFIG_USER_ONLY
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if ((l > 32) &&
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(src & TARGET_PAGE_MASK) == ((src + l) & TARGET_PAGE_MASK) &&
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(dest & TARGET_PAGE_MASK) == ((dest + l) & TARGET_PAGE_MASK)) {
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if (dest == (src + 1)) {
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mvc_fast_memset(env, l + 1, dest, cpu_ldub_data(env, src));
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return;
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} else if ((src & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) {
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mvc_fast_memmove(env, l + 1, dest, src);
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return;
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}
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}
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#else
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if (dest == (src + 1)) {
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memset(g2h(dest), cpu_ldub_data(env, src), l + 1);
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return;
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} else {
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memmove(g2h(dest), g2h(src), l + 1);
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return;
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}
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#endif
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/* handle the parts that fit into 8-byte loads/stores */
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if (dest != (src + 1)) {
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for (i = 0; i < l_64; i++) {
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cpu_stq_data(env, dest + x, cpu_ldq_data(env, src + x));
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x += 8;
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}
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}
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/* slow version crossing pages with byte accesses */
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for (i = x; i <= l; i++) {
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cpu_stb_data(env, dest + i, cpu_ldub_data(env, src + i));
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}
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}
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/* compare unsigned byte arrays */
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uint32_t HELPER(clc)(CPUS390XState *env, uint32_t l, uint64_t s1, uint64_t s2)
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{
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int i;
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unsigned char x, y;
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uint32_t cc;
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HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n",
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__func__, l, s1, s2);
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for (i = 0; i <= l; i++) {
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x = cpu_ldub_data(env, s1 + i);
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y = cpu_ldub_data(env, s2 + i);
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HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y);
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if (x < y) {
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cc = 1;
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goto done;
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} else if (x > y) {
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cc = 2;
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goto done;
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}
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}
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cc = 0;
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done:
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HELPER_LOG("\n");
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return cc;
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}
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/* compare logical under mask */
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uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask,
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uint64_t addr)
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{
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uint8_t r, d;
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uint32_t cc;
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HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%" PRIx64 "\n", __func__, r1,
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mask, addr);
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cc = 0;
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while (mask) {
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if (mask & 8) {
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d = cpu_ldub_data(env, addr);
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r = (r1 & 0xff000000UL) >> 24;
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HELPER_LOG("mask 0x%x %02x/%02x (0x%" PRIx64 ") ", mask, r, d,
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addr);
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if (r < d) {
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cc = 1;
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break;
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} else if (r > d) {
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cc = 2;
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break;
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}
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addr++;
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}
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mask = (mask << 1) & 0xf;
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r1 <<= 8;
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}
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HELPER_LOG("\n");
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return cc;
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}
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/* store character under mask */
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void HELPER(stcm)(CPUS390XState *env, uint32_t r1, uint32_t mask,
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uint64_t addr)
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{
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uint8_t r;
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HELPER_LOG("%s: r1 0x%x mask 0x%x addr 0x%lx\n", __func__, r1, mask,
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addr);
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while (mask) {
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if (mask & 8) {
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r = (r1 & 0xff000000UL) >> 24;
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cpu_stb_data(env, addr, r);
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HELPER_LOG("mask 0x%x %02x (0x%lx) ", mask, r, addr);
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addr++;
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}
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mask = (mask << 1) & 0xf;
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r1 <<= 8;
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}
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HELPER_LOG("\n");
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}
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static inline uint64_t get_address(CPUS390XState *env, int x2, int b2, int d2)
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{
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uint64_t r = d2;
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if (x2) {
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r += env->regs[x2];
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}
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if (b2) {
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r += env->regs[b2];
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}
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/* 31-Bit mode */
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if (!(env->psw.mask & PSW_MASK_64)) {
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r &= 0x7fffffff;
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}
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return r;
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}
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static inline uint64_t get_address_31fix(CPUS390XState *env, int reg)
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{
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uint64_t r = env->regs[reg];
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/* 31-Bit mode */
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if (!(env->psw.mask & PSW_MASK_64)) {
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r &= 0x7fffffff;
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}
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return r;
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}
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/* search string (c is byte to search, r2 is string, r1 end of string) */
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uint32_t HELPER(srst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2)
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{
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uint64_t i;
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uint32_t cc = 2;
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uint64_t str = get_address_31fix(env, r2);
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uint64_t end = get_address_31fix(env, r1);
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HELPER_LOG("%s: c %d *r1 0x%" PRIx64 " *r2 0x%" PRIx64 "\n", __func__,
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c, env->regs[r1], env->regs[r2]);
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for (i = str; i != end; i++) {
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if (cpu_ldub_data(env, i) == c) {
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env->regs[r1] = i;
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cc = 1;
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break;
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}
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}
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return cc;
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}
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/* unsigned string compare (c is string terminator) */
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uint32_t HELPER(clst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2)
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{
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uint64_t s1 = get_address_31fix(env, r1);
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uint64_t s2 = get_address_31fix(env, r2);
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uint8_t v1, v2;
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uint32_t cc;
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c = c & 0xff;
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#ifdef CONFIG_USER_ONLY
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if (!c) {
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HELPER_LOG("%s: comparing '%s' and '%s'\n",
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__func__, (char *)g2h(s1), (char *)g2h(s2));
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}
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#endif
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for (;;) {
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v1 = cpu_ldub_data(env, s1);
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v2 = cpu_ldub_data(env, s2);
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if ((v1 == c || v2 == c) || (v1 != v2)) {
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break;
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}
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s1++;
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s2++;
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}
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if (v1 == v2) {
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cc = 0;
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} else {
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cc = (v1 < v2) ? 1 : 2;
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/* FIXME: 31-bit mode! */
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env->regs[r1] = s1;
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env->regs[r2] = s2;
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}
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return cc;
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}
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/* move page */
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void HELPER(mvpg)(CPUS390XState *env, uint64_t r0, uint64_t r1, uint64_t r2)
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{
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/* XXX missing r0 handling */
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#ifdef CONFIG_USER_ONLY
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int i;
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for (i = 0; i < TARGET_PAGE_SIZE; i++) {
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cpu_stb_data(env, r1 + i, cpu_ldub_data(env, r2 + i));
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}
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#else
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mvc_fast_memmove(env, TARGET_PAGE_SIZE, r1, r2);
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#endif
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}
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|
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/* string copy (c is string terminator) */
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void HELPER(mvst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2)
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{
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uint64_t dest = get_address_31fix(env, r1);
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uint64_t src = get_address_31fix(env, r2);
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uint8_t v;
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|
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c = c & 0xff;
|
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#ifdef CONFIG_USER_ONLY
|
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if (!c) {
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HELPER_LOG("%s: copy '%s' to 0x%lx\n", __func__, (char *)g2h(src),
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dest);
|
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}
|
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#endif
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for (;;) {
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v = cpu_ldub_data(env, src);
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cpu_stb_data(env, dest, v);
|
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if (v == c) {
|
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break;
|
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}
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src++;
|
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dest++;
|
|
}
|
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env->regs[r1] = dest; /* FIXME: 31-bit mode! */
|
|
}
|
|
|
|
/* compare and swap 64-bit */
|
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uint32_t HELPER(csg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
/* FIXME: locking? */
|
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uint32_t cc;
|
|
uint64_t v2 = cpu_ldq_data(env, a2);
|
|
|
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if (env->regs[r1] == v2) {
|
|
cc = 0;
|
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cpu_stq_data(env, a2, env->regs[r3]);
|
|
} else {
|
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cc = 1;
|
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env->regs[r1] = v2;
|
|
}
|
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return cc;
|
|
}
|
|
|
|
/* compare double and swap 64-bit */
|
|
uint32_t HELPER(cdsg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
/* FIXME: locking? */
|
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uint32_t cc;
|
|
uint64_t v2_hi = cpu_ldq_data(env, a2);
|
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uint64_t v2_lo = cpu_ldq_data(env, a2 + 8);
|
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uint64_t v1_hi = env->regs[r1];
|
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uint64_t v1_lo = env->regs[r1 + 1];
|
|
|
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if ((v1_hi == v2_hi) && (v1_lo == v2_lo)) {
|
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cc = 0;
|
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cpu_stq_data(env, a2, env->regs[r3]);
|
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cpu_stq_data(env, a2 + 8, env->regs[r3 + 1]);
|
|
} else {
|
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cc = 1;
|
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env->regs[r1] = v2_hi;
|
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env->regs[r1 + 1] = v2_lo;
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* compare and swap 32-bit */
|
|
uint32_t HELPER(cs)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
/* FIXME: locking? */
|
|
uint32_t cc;
|
|
uint32_t v2 = cpu_ldl_data(env, a2);
|
|
|
|
HELPER_LOG("%s: r1 %d a2 0x%lx r3 %d\n", __func__, r1, a2, r3);
|
|
if (((uint32_t)env->regs[r1]) == v2) {
|
|
cc = 0;
|
|
cpu_stl_data(env, a2, (uint32_t)env->regs[r3]);
|
|
} else {
|
|
cc = 1;
|
|
env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | v2;
|
|
}
|
|
return cc;
|
|
}
|
|
|
|
static uint32_t helper_icm(CPUS390XState *env, uint32_t r1, uint64_t address,
|
|
uint32_t mask)
|
|
{
|
|
int pos = 24; /* top of the lower half of r1 */
|
|
uint64_t rmask = 0xff000000ULL;
|
|
uint8_t val = 0;
|
|
int ccd = 0;
|
|
uint32_t cc = 0;
|
|
|
|
while (mask) {
|
|
if (mask & 8) {
|
|
env->regs[r1] &= ~rmask;
|
|
val = cpu_ldub_data(env, address);
|
|
if ((val & 0x80) && !ccd) {
|
|
cc = 1;
|
|
}
|
|
ccd = 1;
|
|
if (val && cc == 0) {
|
|
cc = 2;
|
|
}
|
|
env->regs[r1] |= (uint64_t)val << pos;
|
|
address++;
|
|
}
|
|
mask = (mask << 1) & 0xf;
|
|
pos -= 8;
|
|
rmask >>= 8;
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* execute instruction
|
|
this instruction executes an insn modified with the contents of r1
|
|
it does not change the executed instruction in memory
|
|
it does not change the program counter
|
|
in other words: tricky...
|
|
currently implemented by interpreting the cases it is most commonly used in
|
|
*/
|
|
uint32_t HELPER(ex)(CPUS390XState *env, uint32_t cc, uint64_t v1,
|
|
uint64_t addr, uint64_t ret)
|
|
{
|
|
uint16_t insn = cpu_lduw_code(env, addr);
|
|
|
|
HELPER_LOG("%s: v1 0x%lx addr 0x%lx insn 0x%x\n", __func__, v1, addr,
|
|
insn);
|
|
if ((insn & 0xf0ff) == 0xd000) {
|
|
uint32_t l, insn2, b1, b2, d1, d2;
|
|
|
|
l = v1 & 0xff;
|
|
insn2 = cpu_ldl_code(env, addr + 2);
|
|
b1 = (insn2 >> 28) & 0xf;
|
|
b2 = (insn2 >> 12) & 0xf;
|
|
d1 = (insn2 >> 16) & 0xfff;
|
|
d2 = insn2 & 0xfff;
|
|
switch (insn & 0xf00) {
|
|
case 0x200:
|
|
helper_mvc(env, l, get_address(env, 0, b1, d1),
|
|
get_address(env, 0, b2, d2));
|
|
break;
|
|
case 0x500:
|
|
cc = helper_clc(env, l, get_address(env, 0, b1, d1),
|
|
get_address(env, 0, b2, d2));
|
|
break;
|
|
case 0x700:
|
|
cc = helper_xc(env, l, get_address(env, 0, b1, d1),
|
|
get_address(env, 0, b2, d2));
|
|
break;
|
|
case 0xc00:
|
|
helper_tr(env, l, get_address(env, 0, b1, d1),
|
|
get_address(env, 0, b2, d2));
|
|
break;
|
|
default:
|
|
goto abort;
|
|
break;
|
|
}
|
|
} else if ((insn & 0xff00) == 0x0a00) {
|
|
/* supervisor call */
|
|
HELPER_LOG("%s: svc %ld via execute\n", __func__, (insn | v1) & 0xff);
|
|
env->psw.addr = ret - 4;
|
|
env->int_svc_code = (insn | v1) & 0xff;
|
|
env->int_svc_ilc = 4;
|
|
helper_exception(env, EXCP_SVC);
|
|
} else if ((insn & 0xff00) == 0xbf00) {
|
|
uint32_t insn2, r1, r3, b2, d2;
|
|
|
|
insn2 = cpu_ldl_code(env, addr + 2);
|
|
r1 = (insn2 >> 20) & 0xf;
|
|
r3 = (insn2 >> 16) & 0xf;
|
|
b2 = (insn2 >> 12) & 0xf;
|
|
d2 = insn2 & 0xfff;
|
|
cc = helper_icm(env, r1, get_address(env, 0, b2, d2), r3);
|
|
} else {
|
|
abort:
|
|
cpu_abort(env, "EXECUTE on instruction prefix 0x%x not implemented\n",
|
|
insn);
|
|
}
|
|
return cc;
|
|
}
|
|
|
|
/* store character under mask high operates on the upper half of r1 */
|
|
void HELPER(stcmh)(CPUS390XState *env, uint32_t r1, uint64_t address,
|
|
uint32_t mask)
|
|
{
|
|
int pos = 56; /* top of the upper half of r1 */
|
|
|
|
while (mask) {
|
|
if (mask & 8) {
|
|
cpu_stb_data(env, address, (env->regs[r1] >> pos) & 0xff);
|
|
address++;
|
|
}
|
|
mask = (mask << 1) & 0xf;
|
|
pos -= 8;
|
|
}
|
|
}
|
|
|
|
/* insert character under mask high; same as icm, but operates on the
|
|
upper half of r1 */
|
|
uint32_t HELPER(icmh)(CPUS390XState *env, uint32_t r1, uint64_t address,
|
|
uint32_t mask)
|
|
{
|
|
int pos = 56; /* top of the upper half of r1 */
|
|
uint64_t rmask = 0xff00000000000000ULL;
|
|
uint8_t val = 0;
|
|
int ccd = 0;
|
|
uint32_t cc = 0;
|
|
|
|
while (mask) {
|
|
if (mask & 8) {
|
|
env->regs[r1] &= ~rmask;
|
|
val = cpu_ldub_data(env, address);
|
|
if ((val & 0x80) && !ccd) {
|
|
cc = 1;
|
|
}
|
|
ccd = 1;
|
|
if (val && cc == 0) {
|
|
cc = 2;
|
|
}
|
|
env->regs[r1] |= (uint64_t)val << pos;
|
|
address++;
|
|
}
|
|
mask = (mask << 1) & 0xf;
|
|
pos -= 8;
|
|
rmask >>= 8;
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* load access registers r1 to r3 from memory at a2 */
|
|
void HELPER(lam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
env->aregs[i] = cpu_ldl_data(env, a2);
|
|
a2 += 4;
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* store access registers r1 to r3 in memory at a2 */
|
|
void HELPER(stam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
cpu_stl_data(env, a2, env->aregs[i]);
|
|
a2 += 4;
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* move long */
|
|
uint32_t HELPER(mvcl)(CPUS390XState *env, uint32_t r1, uint32_t r2)
|
|
{
|
|
uint64_t destlen = env->regs[r1 + 1] & 0xffffff;
|
|
uint64_t dest = get_address_31fix(env, r1);
|
|
uint64_t srclen = env->regs[r2 + 1] & 0xffffff;
|
|
uint64_t src = get_address_31fix(env, r2);
|
|
uint8_t pad = src >> 24;
|
|
uint8_t v;
|
|
uint32_t cc;
|
|
|
|
if (destlen == srclen) {
|
|
cc = 0;
|
|
} else if (destlen < srclen) {
|
|
cc = 1;
|
|
} else {
|
|
cc = 2;
|
|
}
|
|
|
|
if (srclen > destlen) {
|
|
srclen = destlen;
|
|
}
|
|
|
|
for (; destlen && srclen; src++, dest++, destlen--, srclen--) {
|
|
v = cpu_ldub_data(env, src);
|
|
cpu_stb_data(env, dest, v);
|
|
}
|
|
|
|
for (; destlen; dest++, destlen--) {
|
|
cpu_stb_data(env, dest, pad);
|
|
}
|
|
|
|
env->regs[r1 + 1] = destlen;
|
|
/* can't use srclen here, we trunc'ed it */
|
|
env->regs[r2 + 1] -= src - env->regs[r2];
|
|
env->regs[r1] = dest;
|
|
env->regs[r2] = src;
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* move long extended another memcopy insn with more bells and whistles */
|
|
uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
|
|
uint32_t r3)
|
|
{
|
|
uint64_t destlen = env->regs[r1 + 1];
|
|
uint64_t dest = env->regs[r1];
|
|
uint64_t srclen = env->regs[r3 + 1];
|
|
uint64_t src = env->regs[r3];
|
|
uint8_t pad = a2 & 0xff;
|
|
uint8_t v;
|
|
uint32_t cc;
|
|
|
|
if (!(env->psw.mask & PSW_MASK_64)) {
|
|
destlen = (uint32_t)destlen;
|
|
srclen = (uint32_t)srclen;
|
|
dest &= 0x7fffffff;
|
|
src &= 0x7fffffff;
|
|
}
|
|
|
|
if (destlen == srclen) {
|
|
cc = 0;
|
|
} else if (destlen < srclen) {
|
|
cc = 1;
|
|
} else {
|
|
cc = 2;
|
|
}
|
|
|
|
if (srclen > destlen) {
|
|
srclen = destlen;
|
|
}
|
|
|
|
for (; destlen && srclen; src++, dest++, destlen--, srclen--) {
|
|
v = cpu_ldub_data(env, src);
|
|
cpu_stb_data(env, dest, v);
|
|
}
|
|
|
|
for (; destlen; dest++, destlen--) {
|
|
cpu_stb_data(env, dest, pad);
|
|
}
|
|
|
|
env->regs[r1 + 1] = destlen;
|
|
/* can't use srclen here, we trunc'ed it */
|
|
/* FIXME: 31-bit mode! */
|
|
env->regs[r3 + 1] -= src - env->regs[r3];
|
|
env->regs[r1] = dest;
|
|
env->regs[r3] = src;
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* compare logical long extended memcompare insn with padding */
|
|
uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
|
|
uint32_t r3)
|
|
{
|
|
uint64_t destlen = env->regs[r1 + 1];
|
|
uint64_t dest = get_address_31fix(env, r1);
|
|
uint64_t srclen = env->regs[r3 + 1];
|
|
uint64_t src = get_address_31fix(env, r3);
|
|
uint8_t pad = a2 & 0xff;
|
|
uint8_t v1 = 0, v2 = 0;
|
|
uint32_t cc = 0;
|
|
|
|
if (!(destlen || srclen)) {
|
|
return cc;
|
|
}
|
|
|
|
if (srclen > destlen) {
|
|
srclen = destlen;
|
|
}
|
|
|
|
for (; destlen || srclen; src++, dest++, destlen--, srclen--) {
|
|
v1 = srclen ? cpu_ldub_data(env, src) : pad;
|
|
v2 = destlen ? cpu_ldub_data(env, dest) : pad;
|
|
if (v1 != v2) {
|
|
cc = (v1 < v2) ? 1 : 2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
env->regs[r1 + 1] = destlen;
|
|
/* can't use srclen here, we trunc'ed it */
|
|
env->regs[r3 + 1] -= src - env->regs[r3];
|
|
env->regs[r1] = dest;
|
|
env->regs[r3] = src;
|
|
|
|
return cc;
|
|
}
|
|
|
|
/* checksum */
|
|
void HELPER(cksm)(CPUS390XState *env, uint32_t r1, uint32_t r2)
|
|
{
|
|
uint64_t src = get_address_31fix(env, r2);
|
|
uint64_t src_len = env->regs[(r2 + 1) & 15];
|
|
uint64_t cksm = (uint32_t)env->regs[r1];
|
|
|
|
while (src_len >= 4) {
|
|
cksm += cpu_ldl_data(env, src);
|
|
|
|
/* move to next word */
|
|
src_len -= 4;
|
|
src += 4;
|
|
}
|
|
|
|
switch (src_len) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
cksm += cpu_ldub_data(env, src) << 24;
|
|
break;
|
|
case 2:
|
|
cksm += cpu_lduw_data(env, src) << 16;
|
|
break;
|
|
case 3:
|
|
cksm += cpu_lduw_data(env, src) << 16;
|
|
cksm += cpu_ldub_data(env, src + 2) << 8;
|
|
break;
|
|
}
|
|
|
|
/* indicate we've processed everything */
|
|
env->regs[r2] = src + src_len;
|
|
env->regs[(r2 + 1) & 15] = 0;
|
|
|
|
/* store result */
|
|
env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
|
|
((uint32_t)cksm + (cksm >> 32));
|
|
}
|
|
|
|
void HELPER(unpk)(CPUS390XState *env, uint32_t len, uint64_t dest,
|
|
uint64_t src)
|
|
{
|
|
int len_dest = len >> 4;
|
|
int len_src = len & 0xf;
|
|
uint8_t b;
|
|
int second_nibble = 0;
|
|
|
|
dest += len_dest;
|
|
src += len_src;
|
|
|
|
/* last byte is special, it only flips the nibbles */
|
|
b = cpu_ldub_data(env, src);
|
|
cpu_stb_data(env, dest, (b << 4) | (b >> 4));
|
|
src--;
|
|
len_src--;
|
|
|
|
/* now pad every nibble with 0xf0 */
|
|
|
|
while (len_dest > 0) {
|
|
uint8_t cur_byte = 0;
|
|
|
|
if (len_src > 0) {
|
|
cur_byte = cpu_ldub_data(env, src);
|
|
}
|
|
|
|
len_dest--;
|
|
dest--;
|
|
|
|
/* only advance one nibble at a time */
|
|
if (second_nibble) {
|
|
cur_byte >>= 4;
|
|
len_src--;
|
|
src--;
|
|
}
|
|
second_nibble = !second_nibble;
|
|
|
|
/* digit */
|
|
cur_byte = (cur_byte & 0xf);
|
|
/* zone bits */
|
|
cur_byte |= 0xf0;
|
|
|
|
cpu_stb_data(env, dest, cur_byte);
|
|
}
|
|
}
|
|
|
|
void HELPER(tr)(CPUS390XState *env, uint32_t len, uint64_t array,
|
|
uint64_t trans)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i <= len; i++) {
|
|
uint8_t byte = cpu_ldub_data(env, array + i);
|
|
uint8_t new_byte = cpu_ldub_data(env, trans + byte);
|
|
|
|
cpu_stb_data(env, array + i, new_byte);
|
|
}
|
|
}
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
void HELPER(lctlg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
uint64_t src = a2;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
env->cregs[i] = cpu_ldq_data(env, src);
|
|
HELPER_LOG("load ctl %d from 0x%" PRIx64 " == 0x%" PRIx64 "\n",
|
|
i, src, env->cregs[i]);
|
|
src += sizeof(uint64_t);
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
tlb_flush(env, 1);
|
|
}
|
|
|
|
void HELPER(lctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
uint64_t src = a2;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
env->cregs[i] = (env->cregs[i] & 0xFFFFFFFF00000000ULL) |
|
|
cpu_ldl_data(env, src);
|
|
src += sizeof(uint32_t);
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
tlb_flush(env, 1);
|
|
}
|
|
|
|
void HELPER(stctg)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
uint64_t dest = a2;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
cpu_stq_data(env, dest, env->cregs[i]);
|
|
dest += sizeof(uint64_t);
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void HELPER(stctl)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
|
|
{
|
|
int i;
|
|
uint64_t dest = a2;
|
|
|
|
for (i = r1;; i = (i + 1) % 16) {
|
|
cpu_stl_data(env, dest, env->cregs[i]);
|
|
dest += sizeof(uint32_t);
|
|
|
|
if (i == r3) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint32_t HELPER(tprot)(uint64_t a1, uint64_t a2)
|
|
{
|
|
/* XXX implement */
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* insert storage key extended */
|
|
uint64_t HELPER(iske)(CPUS390XState *env, uint64_t r2)
|
|
{
|
|
uint64_t addr = get_address(env, 0, 0, r2);
|
|
|
|
if (addr > ram_size) {
|
|
return 0;
|
|
}
|
|
|
|
return env->storage_keys[addr / TARGET_PAGE_SIZE];
|
|
}
|
|
|
|
/* set storage key extended */
|
|
void HELPER(sske)(CPUS390XState *env, uint32_t r1, uint64_t r2)
|
|
{
|
|
uint64_t addr = get_address(env, 0, 0, r2);
|
|
|
|
if (addr > ram_size) {
|
|
return;
|
|
}
|
|
|
|
env->storage_keys[addr / TARGET_PAGE_SIZE] = r1;
|
|
}
|
|
|
|
/* reset reference bit extended */
|
|
uint32_t HELPER(rrbe)(CPUS390XState *env, uint32_t r1, uint64_t r2)
|
|
{
|
|
uint8_t re;
|
|
uint8_t key;
|
|
|
|
if (r2 > ram_size) {
|
|
return 0;
|
|
}
|
|
|
|
key = env->storage_keys[r2 / TARGET_PAGE_SIZE];
|
|
re = key & (SK_R | SK_C);
|
|
env->storage_keys[r2 / TARGET_PAGE_SIZE] = (key & ~SK_R);
|
|
|
|
/*
|
|
* cc
|
|
*
|
|
* 0 Reference bit zero; change bit zero
|
|
* 1 Reference bit zero; change bit one
|
|
* 2 Reference bit one; change bit zero
|
|
* 3 Reference bit one; change bit one
|
|
*/
|
|
|
|
return re >> 1;
|
|
}
|
|
|
|
/* compare and swap and purge */
|
|
uint32_t HELPER(csp)(CPUS390XState *env, uint32_t r1, uint32_t r2)
|
|
{
|
|
uint32_t cc;
|
|
uint32_t o1 = env->regs[r1];
|
|
uint64_t a2 = get_address_31fix(env, r2) & ~3ULL;
|
|
uint32_t o2 = cpu_ldl_data(env, a2);
|
|
|
|
if (o1 == o2) {
|
|
cpu_stl_data(env, a2, env->regs[(r1 + 1) & 15]);
|
|
if (env->regs[r2] & 0x3) {
|
|
/* flush TLB / ALB */
|
|
tlb_flush(env, 1);
|
|
}
|
|
cc = 0;
|
|
} else {
|
|
env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) | o2;
|
|
cc = 1;
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
static uint32_t mvc_asc(CPUS390XState *env, int64_t l, uint64_t a1,
|
|
uint64_t mode1, uint64_t a2, uint64_t mode2)
|
|
{
|
|
target_ulong src, dest;
|
|
int flags, cc = 0, i;
|
|
|
|
if (!l) {
|
|
return 0;
|
|
} else if (l > 256) {
|
|
/* max 256 */
|
|
l = 256;
|
|
cc = 3;
|
|
}
|
|
|
|
if (mmu_translate(env, a1 & TARGET_PAGE_MASK, 1, mode1, &dest, &flags)) {
|
|
cpu_loop_exit(env);
|
|
}
|
|
dest |= a1 & ~TARGET_PAGE_MASK;
|
|
|
|
if (mmu_translate(env, a2 & TARGET_PAGE_MASK, 0, mode2, &src, &flags)) {
|
|
cpu_loop_exit(env);
|
|
}
|
|
src |= a2 & ~TARGET_PAGE_MASK;
|
|
|
|
/* XXX replace w/ memcpy */
|
|
for (i = 0; i < l; i++) {
|
|
/* XXX be more clever */
|
|
if ((((dest + i) & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) ||
|
|
(((src + i) & TARGET_PAGE_MASK) != (src & TARGET_PAGE_MASK))) {
|
|
mvc_asc(env, l - i, a1 + i, mode1, a2 + i, mode2);
|
|
break;
|
|
}
|
|
stb_phys(dest + i, ldub_phys(src + i));
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
uint32_t HELPER(mvcs)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
|
|
{
|
|
HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
|
|
__func__, l, a1, a2);
|
|
|
|
return mvc_asc(env, l, a1, PSW_ASC_SECONDARY, a2, PSW_ASC_PRIMARY);
|
|
}
|
|
|
|
uint32_t HELPER(mvcp)(CPUS390XState *env, uint64_t l, uint64_t a1, uint64_t a2)
|
|
{
|
|
HELPER_LOG("%s: %16" PRIx64 " %16" PRIx64 " %16" PRIx64 "\n",
|
|
__func__, l, a1, a2);
|
|
|
|
return mvc_asc(env, l, a1, PSW_ASC_PRIMARY, a2, PSW_ASC_SECONDARY);
|
|
}
|
|
|
|
/* invalidate pte */
|
|
void HELPER(ipte)(CPUS390XState *env, uint64_t pte_addr, uint64_t vaddr)
|
|
{
|
|
uint64_t page = vaddr & TARGET_PAGE_MASK;
|
|
uint64_t pte = 0;
|
|
|
|
/* XXX broadcast to other CPUs */
|
|
|
|
/* XXX Linux is nice enough to give us the exact pte address.
|
|
According to spec we'd have to find it out ourselves */
|
|
/* XXX Linux is fine with overwriting the pte, the spec requires
|
|
us to only set the invalid bit */
|
|
stq_phys(pte_addr, pte | _PAGE_INVALID);
|
|
|
|
/* XXX we exploit the fact that Linux passes the exact virtual
|
|
address here - it's not obliged to! */
|
|
tlb_flush_page(env, page);
|
|
|
|
/* XXX 31-bit hack */
|
|
if (page & 0x80000000) {
|
|
tlb_flush_page(env, page & ~0x80000000);
|
|
} else {
|
|
tlb_flush_page(env, page | 0x80000000);
|
|
}
|
|
}
|
|
|
|
/* flush local tlb */
|
|
void HELPER(ptlb)(CPUS390XState *env)
|
|
{
|
|
tlb_flush(env, 1);
|
|
}
|
|
|
|
/* store using real address */
|
|
void HELPER(stura)(CPUS390XState *env, uint64_t addr, uint32_t v1)
|
|
{
|
|
stw_phys(get_address(env, 0, 0, addr), v1);
|
|
}
|
|
|
|
/* load real address */
|
|
uint32_t HELPER(lra)(CPUS390XState *env, uint64_t addr, uint32_t r1)
|
|
{
|
|
uint32_t cc = 0;
|
|
int old_exc = env->exception_index;
|
|
uint64_t asc = env->psw.mask & PSW_MASK_ASC;
|
|
uint64_t ret;
|
|
int flags;
|
|
|
|
/* XXX incomplete - has more corner cases */
|
|
if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) {
|
|
program_interrupt(env, PGM_SPECIAL_OP, 2);
|
|
}
|
|
|
|
env->exception_index = old_exc;
|
|
if (mmu_translate(env, addr, 0, asc, &ret, &flags)) {
|
|
cc = 3;
|
|
}
|
|
if (env->exception_index == EXCP_PGM) {
|
|
ret = env->int_pgm_code | 0x80000000;
|
|
} else {
|
|
ret |= addr & ~TARGET_PAGE_MASK;
|
|
}
|
|
env->exception_index = old_exc;
|
|
|
|
if (!(env->psw.mask & PSW_MASK_64)) {
|
|
env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
|
|
(ret & 0xffffffffULL);
|
|
} else {
|
|
env->regs[r1] = ret;
|
|
}
|
|
|
|
return cc;
|
|
}
|
|
|
|
#endif
|