* S/390 helpers
*
* Copyright (c) 2009 Ulrich Hecht
+ * Copyright (c) 2011 Alexander Graf
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
#include "cpu.h"
-#include "exec-all.h"
-#include "gdbstub.h"
-#include "qemu-common.h"
+#include "exec/gdbstub.h"
+#include "qemu/timer.h"
+#ifndef CONFIG_USER_ONLY
+#include "sysemu/sysemu.h"
+#endif
+
+//#define DEBUG_S390
+//#define DEBUG_S390_PTE
+//#define DEBUG_S390_STDOUT
+
+#ifdef DEBUG_S390
+#ifdef DEBUG_S390_STDOUT
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); \
+ qemu_log(fmt, ##__VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { qemu_log(fmt, ## __VA_ARGS__); } while (0)
+#endif
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+#ifdef DEBUG_S390_PTE
+#define PTE_DPRINTF DPRINTF
+#else
+#define PTE_DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+#ifndef CONFIG_USER_ONLY
+void s390x_tod_timer(void *opaque)
+{
+ S390CPU *cpu = opaque;
+ CPUS390XState *env = &cpu->env;
-#include <linux/kvm.h>
-#include "kvm.h"
+ env->pending_int |= INTERRUPT_TOD;
+ cpu_interrupt(env, CPU_INTERRUPT_HARD);
+}
-CPUS390XState *cpu_s390x_init(const char *cpu_model)
+void s390x_cpu_timer(void *opaque)
{
+ S390CPU *cpu = opaque;
+ CPUS390XState *env = &cpu->env;
+
+ env->pending_int |= INTERRUPT_CPUTIMER;
+ cpu_interrupt(env, CPU_INTERRUPT_HARD);
+}
+#endif
+
+S390CPU *cpu_s390x_init(const char *cpu_model)
+{
+ S390CPU *cpu;
CPUS390XState *env;
- static int inited = 0;
- env = qemu_mallocz(sizeof(CPUS390XState));
- cpu_exec_init(env);
- if (!inited) {
- inited = 1;
+ cpu = S390_CPU(object_new(TYPE_S390_CPU));
+ env = &cpu->env;
+ env->cpu_model_str = cpu_model;
+
+ object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+
+ return cpu;
+}
+
+#if defined(CONFIG_USER_ONLY)
+
+void do_interrupt(CPUS390XState *env)
+{
+ env->exception_index = -1;
+}
+
+int cpu_s390x_handle_mmu_fault(CPUS390XState *env, target_ulong address,
+ int rw, int mmu_idx)
+{
+ env->exception_index = EXCP_PGM;
+ env->int_pgm_code = PGM_ADDRESSING;
+ /* On real machines this value is dropped into LowMem. Since this
+ is userland, simply put this someplace that cpu_loop can find it. */
+ env->__excp_addr = address;
+ return 1;
+}
+
+#else /* !CONFIG_USER_ONLY */
+
+/* Ensure to exit the TB after this call! */
+static void trigger_pgm_exception(CPUS390XState *env, uint32_t code,
+ uint32_t ilen)
+{
+ env->exception_index = EXCP_PGM;
+ env->int_pgm_code = code;
+ env->int_pgm_ilen = ilen;
+}
+
+static int trans_bits(CPUS390XState *env, uint64_t mode)
+{
+ int bits = 0;
+
+ switch (mode) {
+ case PSW_ASC_PRIMARY:
+ bits = 1;
+ break;
+ case PSW_ASC_SECONDARY:
+ bits = 2;
+ break;
+ case PSW_ASC_HOME:
+ bits = 3;
+ break;
+ default:
+ cpu_abort(env, "unknown asc mode\n");
+ break;
}
- env->cpu_model_str = cpu_model;
- cpu_reset(env);
- qemu_init_vcpu(env);
- return env;
+ return bits;
+}
+
+static void trigger_prot_fault(CPUS390XState *env, target_ulong vaddr,
+ uint64_t mode)
+{
+ int ilen = ILEN_LATER_INC;
+ int bits = trans_bits(env, mode) | 4;
+
+ DPRINTF("%s: vaddr=%016" PRIx64 " bits=%d\n", __func__, vaddr, bits);
+
+ stq_phys(env->psa + offsetof(LowCore, trans_exc_code), vaddr | bits);
+ trigger_pgm_exception(env, PGM_PROTECTION, ilen);
}
-void cpu_reset(CPUS390XState *env)
+static void trigger_page_fault(CPUS390XState *env, target_ulong vaddr,
+ uint32_t type, uint64_t asc, int rw)
{
- if (qemu_loglevel_mask(CPU_LOG_RESET)) {
- qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
- log_cpu_state(env, 0);
+ int ilen = ILEN_LATER;
+ int bits = trans_bits(env, asc);
+
+ /* Code accesses have an undefined ilc. */
+ if (rw == 2) {
+ ilen = 2;
}
- memset(env, 0, offsetof(CPUS390XState, breakpoints));
- /* FIXME: reset vector? */
- tlb_flush(env, 1);
+ DPRINTF("%s: vaddr=%016" PRIx64 " bits=%d\n", __func__, vaddr, bits);
+
+ stq_phys(env->psa + offsetof(LowCore, trans_exc_code), vaddr | bits);
+ trigger_pgm_exception(env, type, ilen);
}
-#ifndef CONFIG_USER_ONLY
+static int mmu_translate_asce(CPUS390XState *env, target_ulong vaddr,
+ uint64_t asc, uint64_t asce, int level,
+ target_ulong *raddr, int *flags, int rw)
+{
+ uint64_t offs = 0;
+ uint64_t origin;
+ uint64_t new_asce;
+
+ PTE_DPRINTF("%s: 0x%" PRIx64 "\n", __func__, asce);
+
+ if (((level != _ASCE_TYPE_SEGMENT) && (asce & _REGION_ENTRY_INV)) ||
+ ((level == _ASCE_TYPE_SEGMENT) && (asce & _SEGMENT_ENTRY_INV))) {
+ /* XXX different regions have different faults */
+ DPRINTF("%s: invalid region\n", __func__);
+ trigger_page_fault(env, vaddr, PGM_SEGMENT_TRANS, asc, rw);
+ return -1;
+ }
+
+ if ((level <= _ASCE_TYPE_MASK) && ((asce & _ASCE_TYPE_MASK) != level)) {
+ trigger_page_fault(env, vaddr, PGM_TRANS_SPEC, asc, rw);
+ return -1;
+ }
+
+ if (asce & _ASCE_REAL_SPACE) {
+ /* direct mapping */
+
+ *raddr = vaddr;
+ return 0;
+ }
+
+ origin = asce & _ASCE_ORIGIN;
+
+ switch (level) {
+ case _ASCE_TYPE_REGION1 + 4:
+ offs = (vaddr >> 50) & 0x3ff8;
+ break;
+ case _ASCE_TYPE_REGION1:
+ offs = (vaddr >> 39) & 0x3ff8;
+ break;
+ case _ASCE_TYPE_REGION2:
+ offs = (vaddr >> 28) & 0x3ff8;
+ break;
+ case _ASCE_TYPE_REGION3:
+ offs = (vaddr >> 17) & 0x3ff8;
+ break;
+ case _ASCE_TYPE_SEGMENT:
+ offs = (vaddr >> 9) & 0x07f8;
+ origin = asce & _SEGMENT_ENTRY_ORIGIN;
+ break;
+ }
+
+ /* XXX region protection flags */
+ /* *flags &= ~PAGE_WRITE */
+
+ new_asce = ldq_phys(origin + offs);
+ PTE_DPRINTF("%s: 0x%" PRIx64 " + 0x%" PRIx64 " => 0x%016" PRIx64 "\n",
+ __func__, origin, offs, new_asce);
+
+ if (level != _ASCE_TYPE_SEGMENT) {
+ /* yet another region */
+ return mmu_translate_asce(env, vaddr, asc, new_asce, level - 4, raddr,
+ flags, rw);
+ }
+
+ /* PTE */
+ if (new_asce & _PAGE_INVALID) {
+ DPRINTF("%s: PTE=0x%" PRIx64 " invalid\n", __func__, new_asce);
+ trigger_page_fault(env, vaddr, PGM_PAGE_TRANS, asc, rw);
+ return -1;
+ }
+
+ if (new_asce & _PAGE_RO) {
+ *flags &= ~PAGE_WRITE;
+ }
+
+ *raddr = new_asce & _ASCE_ORIGIN;
+
+ PTE_DPRINTF("%s: PTE=0x%" PRIx64 "\n", __func__, new_asce);
+
+ return 0;
+}
+
+static int mmu_translate_asc(CPUS390XState *env, target_ulong vaddr,
+ uint64_t asc, target_ulong *raddr, int *flags,
+ int rw)
+{
+ uint64_t asce = 0;
+ int level, new_level;
+ int r;
+
+ switch (asc) {
+ case PSW_ASC_PRIMARY:
+ PTE_DPRINTF("%s: asc=primary\n", __func__);
+ asce = env->cregs[1];
+ break;
+ case PSW_ASC_SECONDARY:
+ PTE_DPRINTF("%s: asc=secondary\n", __func__);
+ asce = env->cregs[7];
+ break;
+ case PSW_ASC_HOME:
+ PTE_DPRINTF("%s: asc=home\n", __func__);
+ asce = env->cregs[13];
+ break;
+ }
-int cpu_s390x_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
- int mmu_idx, int is_softmmu)
+ switch (asce & _ASCE_TYPE_MASK) {
+ case _ASCE_TYPE_REGION1:
+ break;
+ case _ASCE_TYPE_REGION2:
+ if (vaddr & 0xffe0000000000000ULL) {
+ DPRINTF("%s: vaddr doesn't fit 0x%16" PRIx64
+ " 0xffe0000000000000ULL\n", __func__, vaddr);
+ trigger_page_fault(env, vaddr, PGM_TRANS_SPEC, asc, rw);
+ return -1;
+ }
+ break;
+ case _ASCE_TYPE_REGION3:
+ if (vaddr & 0xfffffc0000000000ULL) {
+ DPRINTF("%s: vaddr doesn't fit 0x%16" PRIx64
+ " 0xfffffc0000000000ULL\n", __func__, vaddr);
+ trigger_page_fault(env, vaddr, PGM_TRANS_SPEC, asc, rw);
+ return -1;
+ }
+ break;
+ case _ASCE_TYPE_SEGMENT:
+ if (vaddr & 0xffffffff80000000ULL) {
+ DPRINTF("%s: vaddr doesn't fit 0x%16" PRIx64
+ " 0xffffffff80000000ULL\n", __func__, vaddr);
+ trigger_page_fault(env, vaddr, PGM_TRANS_SPEC, asc, rw);
+ return -1;
+ }
+ break;
+ }
+
+ /* fake level above current */
+ level = asce & _ASCE_TYPE_MASK;
+ new_level = level + 4;
+ asce = (asce & ~_ASCE_TYPE_MASK) | (new_level & _ASCE_TYPE_MASK);
+
+ r = mmu_translate_asce(env, vaddr, asc, asce, new_level, raddr, flags, rw);
+
+ if ((rw == 1) && !(*flags & PAGE_WRITE)) {
+ trigger_prot_fault(env, vaddr, asc);
+ return -1;
+ }
+
+ return r;
+}
+
+int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
+ target_ulong *raddr, int *flags)
{
- target_ulong phys;
+ int r = -1;
+ uint8_t *sk;
+
+ *flags = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ vaddr &= TARGET_PAGE_MASK;
+
+ if (!(env->psw.mask & PSW_MASK_DAT)) {
+ *raddr = vaddr;
+ r = 0;
+ goto out;
+ }
+
+ switch (asc) {
+ case PSW_ASC_PRIMARY:
+ case PSW_ASC_HOME:
+ r = mmu_translate_asc(env, vaddr, asc, raddr, flags, rw);
+ break;
+ case PSW_ASC_SECONDARY:
+ /*
+ * Instruction: Primary
+ * Data: Secondary
+ */
+ if (rw == 2) {
+ r = mmu_translate_asc(env, vaddr, PSW_ASC_PRIMARY, raddr, flags,
+ rw);
+ *flags &= ~(PAGE_READ | PAGE_WRITE);
+ } else {
+ r = mmu_translate_asc(env, vaddr, PSW_ASC_SECONDARY, raddr, flags,
+ rw);
+ *flags &= ~(PAGE_EXEC);
+ }
+ break;
+ case PSW_ASC_ACCREG:
+ default:
+ hw_error("guest switched to unknown asc mode\n");
+ break;
+ }
+
+ out:
+ /* Convert real address -> absolute address */
+ if (*raddr < 0x2000) {
+ *raddr = *raddr + env->psa;
+ }
+
+ if (*raddr <= ram_size) {
+ sk = &env->storage_keys[*raddr / TARGET_PAGE_SIZE];
+ if (*flags & PAGE_READ) {
+ *sk |= SK_R;
+ }
+
+ if (*flags & PAGE_WRITE) {
+ *sk |= SK_C;
+ }
+ }
+
+ return r;
+}
+
+int cpu_s390x_handle_mmu_fault(CPUS390XState *env, target_ulong orig_vaddr,
+ int rw, int mmu_idx)
+{
+ uint64_t asc = env->psw.mask & PSW_MASK_ASC;
+ target_ulong vaddr, raddr;
int prot;
- /* XXX: implement mmu */
+ DPRINTF("%s: address 0x%" PRIx64 " rw %d mmu_idx %d\n",
+ __func__, orig_vaddr, rw, mmu_idx);
+
+ orig_vaddr &= TARGET_PAGE_MASK;
+ vaddr = orig_vaddr;
+
+ /* 31-Bit mode */
+ if (!(env->psw.mask & PSW_MASK_64)) {
+ vaddr &= 0x7fffffff;
+ }
- phys = address;
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ if (mmu_translate(env, vaddr, rw, asc, &raddr, &prot)) {
+ /* Translation ended in exception */
+ return 1;
+ }
+
+ /* check out of RAM access */
+ if (raddr > (ram_size + virtio_size)) {
+ DPRINTF("%s: raddr %" PRIx64 " > ram_size %" PRIx64 "\n", __func__,
+ (uint64_t)raddr, (uint64_t)ram_size);
+ trigger_pgm_exception(env, PGM_ADDRESSING, ILEN_LATER);
+ return 1;
+ }
- tlb_set_page(env, address & TARGET_PAGE_MASK,
- phys & TARGET_PAGE_MASK, prot,
+ DPRINTF("%s: set tlb %" PRIx64 " -> %" PRIx64 " (%x)\n", __func__,
+ (uint64_t)vaddr, (uint64_t)raddr, prot);
+
+ tlb_set_page(env, orig_vaddr, raddr, prot,
mmu_idx, TARGET_PAGE_SIZE);
+
return 0;
}
+
+hwaddr cpu_get_phys_page_debug(CPUS390XState *env,
+ target_ulong vaddr)
+{
+ target_ulong raddr;
+ int prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ int old_exc = env->exception_index;
+ uint64_t asc = env->psw.mask & PSW_MASK_ASC;
+
+ /* 31-Bit mode */
+ if (!(env->psw.mask & PSW_MASK_64)) {
+ vaddr &= 0x7fffffff;
+ }
+
+ mmu_translate(env, vaddr, 2, asc, &raddr, &prot);
+ env->exception_index = old_exc;
+
+ return raddr;
+}
+
+void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr)
+{
+ if (mask & PSW_MASK_WAIT) {
+ S390CPU *cpu = s390_env_get_cpu(env);
+ if (!(mask & (PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK))) {
+ if (s390_del_running_cpu(cpu) == 0) {
+#ifndef CONFIG_USER_ONLY
+ qemu_system_shutdown_request();
+#endif
+ }
+ }
+ env->halted = 1;
+ env->exception_index = EXCP_HLT;
+ }
+
+ env->psw.addr = addr;
+ env->psw.mask = mask;
+ env->cc_op = (mask >> 44) & 3;
+}
+
+static uint64_t get_psw_mask(CPUS390XState *env)
+{
+ uint64_t r;
+
+ env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst, env->cc_vr);
+
+ r = env->psw.mask;
+ r &= ~PSW_MASK_CC;
+ assert(!(env->cc_op & ~3));
+ r |= (uint64_t)env->cc_op << 44;
+
+ return r;
+}
+
+static LowCore *cpu_map_lowcore(CPUS390XState *env)
+{
+ LowCore *lowcore;
+ hwaddr len = sizeof(LowCore);
+
+ lowcore = cpu_physical_memory_map(env->psa, &len, 1);
+
+ if (len < sizeof(LowCore)) {
+ cpu_abort(env, "Could not map lowcore\n");
+ }
+
+ return lowcore;
+}
+
+static void cpu_unmap_lowcore(LowCore *lowcore)
+{
+ cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore));
+}
+
+void *s390_cpu_physical_memory_map(CPUS390XState *env, hwaddr addr, hwaddr *len,
+ int is_write)
+{
+ hwaddr start = addr;
+
+ /* Mind the prefix area. */
+ if (addr < 8192) {
+ /* Map the lowcore. */
+ start += env->psa;
+ *len = MIN(*len, 8192 - addr);
+ } else if ((addr >= env->psa) && (addr < env->psa + 8192)) {
+ /* Map the 0 page. */
+ start -= env->psa;
+ *len = MIN(*len, 8192 - start);
+ }
+
+ return cpu_physical_memory_map(start, len, is_write);
+}
+
+void s390_cpu_physical_memory_unmap(CPUS390XState *env, void *addr, hwaddr len,
+ int is_write)
+{
+ cpu_physical_memory_unmap(addr, len, is_write, len);
+}
+
+static void do_svc_interrupt(CPUS390XState *env)
+{
+ uint64_t mask, addr;
+ LowCore *lowcore;
+
+ lowcore = cpu_map_lowcore(env);
+
+ lowcore->svc_code = cpu_to_be16(env->int_svc_code);
+ lowcore->svc_ilen = cpu_to_be16(env->int_svc_ilen);
+ lowcore->svc_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->svc_old_psw.addr = cpu_to_be64(env->psw.addr + env->int_svc_ilen);
+ mask = be64_to_cpu(lowcore->svc_new_psw.mask);
+ addr = be64_to_cpu(lowcore->svc_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ load_psw(env, mask, addr);
+}
+
+static void do_program_interrupt(CPUS390XState *env)
+{
+ uint64_t mask, addr;
+ LowCore *lowcore;
+ int ilen = env->int_pgm_ilen;
+
+ switch (ilen) {
+ case ILEN_LATER:
+ ilen = get_ilen(cpu_ldub_code(env, env->psw.addr));
+ break;
+ case ILEN_LATER_INC:
+ ilen = get_ilen(cpu_ldub_code(env, env->psw.addr));
+ env->psw.addr += ilen;
+ break;
+ default:
+ assert(ilen == 2 || ilen == 4 || ilen == 6);
+ }
+
+ qemu_log_mask(CPU_LOG_INT, "%s: code=0x%x ilen=%d\n",
+ __func__, env->int_pgm_code, ilen);
+
+ lowcore = cpu_map_lowcore(env);
+
+ lowcore->pgm_ilen = cpu_to_be16(ilen);
+ lowcore->pgm_code = cpu_to_be16(env->int_pgm_code);
+ lowcore->program_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->program_old_psw.addr = cpu_to_be64(env->psw.addr);
+ mask = be64_to_cpu(lowcore->program_new_psw.mask);
+ addr = be64_to_cpu(lowcore->program_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ DPRINTF("%s: %x %x %" PRIx64 " %" PRIx64 "\n", __func__,
+ env->int_pgm_code, ilen, env->psw.mask,
+ env->psw.addr);
+
+ load_psw(env, mask, addr);
+}
+
+#define VIRTIO_SUBCODE_64 0x0D00
+
+static void do_ext_interrupt(CPUS390XState *env)
+{
+ uint64_t mask, addr;
+ LowCore *lowcore;
+ ExtQueue *q;
+
+ if (!(env->psw.mask & PSW_MASK_EXT)) {
+ cpu_abort(env, "Ext int w/o ext mask\n");
+ }
+
+ if (env->ext_index < 0 || env->ext_index > MAX_EXT_QUEUE) {
+ cpu_abort(env, "Ext queue overrun: %d\n", env->ext_index);
+ }
+
+ q = &env->ext_queue[env->ext_index];
+ lowcore = cpu_map_lowcore(env);
+
+ lowcore->ext_int_code = cpu_to_be16(q->code);
+ lowcore->ext_params = cpu_to_be32(q->param);
+ lowcore->ext_params2 = cpu_to_be64(q->param64);
+ lowcore->external_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->external_old_psw.addr = cpu_to_be64(env->psw.addr);
+ lowcore->cpu_addr = cpu_to_be16(env->cpu_num | VIRTIO_SUBCODE_64);
+ mask = be64_to_cpu(lowcore->external_new_psw.mask);
+ addr = be64_to_cpu(lowcore->external_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ env->ext_index--;
+ if (env->ext_index == -1) {
+ env->pending_int &= ~INTERRUPT_EXT;
+ }
+
+ DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
+ env->psw.mask, env->psw.addr);
+
+ load_psw(env, mask, addr);
+}
+
+static void do_io_interrupt(CPUS390XState *env)
+{
+ LowCore *lowcore;
+ IOIntQueue *q;
+ uint8_t isc;
+ int disable = 1;
+ int found = 0;
+
+ if (!(env->psw.mask & PSW_MASK_IO)) {
+ cpu_abort(env, "I/O int w/o I/O mask\n");
+ }
+
+ for (isc = 0; isc < ARRAY_SIZE(env->io_index); isc++) {
+ uint64_t isc_bits;
+
+ if (env->io_index[isc] < 0) {
+ continue;
+ }
+ if (env->io_index[isc] > MAX_IO_QUEUE) {
+ cpu_abort(env, "I/O queue overrun for isc %d: %d\n",
+ isc, env->io_index[isc]);
+ }
+
+ q = &env->io_queue[env->io_index[isc]][isc];
+ isc_bits = ISC_TO_ISC_BITS(IO_INT_WORD_ISC(q->word));
+ if (!(env->cregs[6] & isc_bits)) {
+ disable = 0;
+ continue;
+ }
+ if (!found) {
+ uint64_t mask, addr;
+
+ found = 1;
+ lowcore = cpu_map_lowcore(env);
+
+ lowcore->subchannel_id = cpu_to_be16(q->id);
+ lowcore->subchannel_nr = cpu_to_be16(q->nr);
+ lowcore->io_int_parm = cpu_to_be32(q->parm);
+ lowcore->io_int_word = cpu_to_be32(q->word);
+ lowcore->io_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->io_old_psw.addr = cpu_to_be64(env->psw.addr);
+ mask = be64_to_cpu(lowcore->io_new_psw.mask);
+ addr = be64_to_cpu(lowcore->io_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ env->io_index[isc]--;
+
+ DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
+ env->psw.mask, env->psw.addr);
+ load_psw(env, mask, addr);
+ }
+ if (env->io_index[isc] >= 0) {
+ disable = 0;
+ }
+ continue;
+ }
+
+ if (disable) {
+ env->pending_int &= ~INTERRUPT_IO;
+ }
+
+}
+
+static void do_mchk_interrupt(CPUS390XState *env)
+{
+ uint64_t mask, addr;
+ LowCore *lowcore;
+ MchkQueue *q;
+ int i;
+
+ if (!(env->psw.mask & PSW_MASK_MCHECK)) {
+ cpu_abort(env, "Machine check w/o mchk mask\n");
+ }
+
+ if (env->mchk_index < 0 || env->mchk_index > MAX_MCHK_QUEUE) {
+ cpu_abort(env, "Mchk queue overrun: %d\n", env->mchk_index);
+ }
+
+ q = &env->mchk_queue[env->mchk_index];
+
+ if (q->type != 1) {
+ /* Don't know how to handle this... */
+ cpu_abort(env, "Unknown machine check type %d\n", q->type);
+ }
+ if (!(env->cregs[14] & (1 << 28))) {
+ /* CRW machine checks disabled */
+ return;
+ }
+
+ lowcore = cpu_map_lowcore(env);
+
+ for (i = 0; i < 16; i++) {
+ lowcore->floating_pt_save_area[i] = cpu_to_be64(env->fregs[i].ll);
+ lowcore->gpregs_save_area[i] = cpu_to_be64(env->regs[i]);
+ lowcore->access_regs_save_area[i] = cpu_to_be32(env->aregs[i]);
+ lowcore->cregs_save_area[i] = cpu_to_be64(env->cregs[i]);
+ }
+ lowcore->prefixreg_save_area = cpu_to_be32(env->psa);
+ lowcore->fpt_creg_save_area = cpu_to_be32(env->fpc);
+ lowcore->tod_progreg_save_area = cpu_to_be32(env->todpr);
+ lowcore->cpu_timer_save_area[0] = cpu_to_be32(env->cputm >> 32);
+ lowcore->cpu_timer_save_area[1] = cpu_to_be32((uint32_t)env->cputm);
+ lowcore->clock_comp_save_area[0] = cpu_to_be32(env->ckc >> 32);
+ lowcore->clock_comp_save_area[1] = cpu_to_be32((uint32_t)env->ckc);
+
+ lowcore->mcck_interruption_code[0] = cpu_to_be32(0x00400f1d);
+ lowcore->mcck_interruption_code[1] = cpu_to_be32(0x40330000);
+ lowcore->mcck_old_psw.mask = cpu_to_be64(get_psw_mask(env));
+ lowcore->mcck_old_psw.addr = cpu_to_be64(env->psw.addr);
+ mask = be64_to_cpu(lowcore->mcck_new_psw.mask);
+ addr = be64_to_cpu(lowcore->mcck_new_psw.addr);
+
+ cpu_unmap_lowcore(lowcore);
+
+ env->mchk_index--;
+ if (env->mchk_index == -1) {
+ env->pending_int &= ~INTERRUPT_MCHK;
+ }
+
+ DPRINTF("%s: %" PRIx64 " %" PRIx64 "\n", __func__,
+ env->psw.mask, env->psw.addr);
+
+ load_psw(env, mask, addr);
+}
+
+void do_interrupt(CPUS390XState *env)
+{
+ S390CPU *cpu = s390_env_get_cpu(env);
+
+ qemu_log_mask(CPU_LOG_INT, "%s: %d at pc=%" PRIx64 "\n",
+ __func__, env->exception_index, env->psw.addr);
+
+ s390_add_running_cpu(cpu);
+ /* handle machine checks */
+ if ((env->psw.mask & PSW_MASK_MCHECK) &&
+ (env->exception_index == -1)) {
+ if (env->pending_int & INTERRUPT_MCHK) {
+ env->exception_index = EXCP_MCHK;
+ }
+ }
+ /* handle external interrupts */
+ if ((env->psw.mask & PSW_MASK_EXT) &&
+ env->exception_index == -1) {
+ if (env->pending_int & INTERRUPT_EXT) {
+ /* code is already in env */
+ env->exception_index = EXCP_EXT;
+ } else if (env->pending_int & INTERRUPT_TOD) {
+ cpu_inject_ext(cpu, 0x1004, 0, 0);
+ env->exception_index = EXCP_EXT;
+ env->pending_int &= ~INTERRUPT_EXT;
+ env->pending_int &= ~INTERRUPT_TOD;
+ } else if (env->pending_int & INTERRUPT_CPUTIMER) {
+ cpu_inject_ext(cpu, 0x1005, 0, 0);
+ env->exception_index = EXCP_EXT;
+ env->pending_int &= ~INTERRUPT_EXT;
+ env->pending_int &= ~INTERRUPT_TOD;
+ }
+ }
+ /* handle I/O interrupts */
+ if ((env->psw.mask & PSW_MASK_IO) &&
+ (env->exception_index == -1)) {
+ if (env->pending_int & INTERRUPT_IO) {
+ env->exception_index = EXCP_IO;
+ }
+ }
+
+ switch (env->exception_index) {
+ case EXCP_PGM:
+ do_program_interrupt(env);
+ break;
+ case EXCP_SVC:
+ do_svc_interrupt(env);
+ break;
+ case EXCP_EXT:
+ do_ext_interrupt(env);
+ break;
+ case EXCP_IO:
+ do_io_interrupt(env);
+ break;
+ case EXCP_MCHK:
+ do_mchk_interrupt(env);
+ break;
+ }
+ env->exception_index = -1;
+
+ if (!env->pending_int) {
+ env->interrupt_request &= ~CPU_INTERRUPT_HARD;
+ }
+}
+
#endif /* CONFIG_USER_ONLY */
projects / qemu.git / blobdiff