| /* |
| * 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 as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "cpu.h" |
| #include "internal.h" |
| #include "exec/gdbstub.h" |
| #include "qemu/timer.h" |
| #include "exec/exec-all.h" |
| #include "hw/s390x/ioinst.h" |
| #ifndef CONFIG_USER_ONLY |
| #include "sysemu/sysemu.h" |
| #endif |
| |
| //#define DEBUG_S390 |
| //#define DEBUG_S390_STDOUT |
| |
| #ifdef DEBUG_S390 |
| #ifdef DEBUG_S390_STDOUT |
| #define DPRINTF(fmt, ...) \ |
| do { fprintf(stderr, fmt, ## __VA_ARGS__); \ |
| if (qemu_log_separate()) 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 |
| |
| |
| #ifndef CONFIG_USER_ONLY |
| void s390x_tod_timer(void *opaque) |
| { |
| S390CPU *cpu = opaque; |
| CPUS390XState *env = &cpu->env; |
| |
| env->pending_int |= INTERRUPT_TOD; |
| cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD); |
| } |
| |
| void s390x_cpu_timer(void *opaque) |
| { |
| S390CPU *cpu = opaque; |
| CPUS390XState *env = &cpu->env; |
| |
| env->pending_int |= INTERRUPT_CPUTIMER; |
| cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD); |
| } |
| #endif |
| |
| S390CPU *s390x_new_cpu(const char *typename, uint32_t core_id, Error **errp) |
| { |
| S390CPU *cpu = S390_CPU(object_new(typename)); |
| Error *err = NULL; |
| |
| object_property_set_int(OBJECT(cpu), core_id, "core-id", &err); |
| if (err != NULL) { |
| goto out; |
| } |
| object_property_set_bool(OBJECT(cpu), true, "realized", &err); |
| |
| out: |
| if (err) { |
| error_propagate(errp, err); |
| object_unref(OBJECT(cpu)); |
| cpu = NULL; |
| } |
| return cpu; |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| |
| hwaddr s390_cpu_get_phys_page_debug(CPUState *cs, vaddr vaddr) |
| { |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| target_ulong raddr; |
| int prot; |
| uint64_t asc = env->psw.mask & PSW_MASK_ASC; |
| |
| /* 31-Bit mode */ |
| if (!(env->psw.mask & PSW_MASK_64)) { |
| vaddr &= 0x7fffffff; |
| } |
| |
| if (mmu_translate(env, vaddr, MMU_INST_FETCH, asc, &raddr, &prot, false)) { |
| return -1; |
| } |
| return raddr; |
| } |
| |
| hwaddr s390_cpu_get_phys_addr_debug(CPUState *cs, vaddr vaddr) |
| { |
| hwaddr phys_addr; |
| target_ulong page; |
| |
| page = vaddr & TARGET_PAGE_MASK; |
| phys_addr = cpu_get_phys_page_debug(cs, page); |
| phys_addr += (vaddr & ~TARGET_PAGE_MASK); |
| |
| return phys_addr; |
| } |
| |
| void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr) |
| { |
| uint64_t old_mask = env->psw.mask; |
| |
| env->psw.addr = addr; |
| env->psw.mask = mask; |
| if (tcg_enabled()) { |
| env->cc_op = (mask >> 44) & 3; |
| } |
| |
| if ((old_mask ^ mask) & PSW_MASK_PER) { |
| s390_cpu_recompute_watchpoints(CPU(s390_env_get_cpu(env))); |
| } |
| |
| if (mask & PSW_MASK_WAIT) { |
| S390CPU *cpu = s390_env_get_cpu(env); |
| if (s390_cpu_halt(cpu) == 0) { |
| #ifndef CONFIG_USER_ONLY |
| qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); |
| #endif |
| } |
| } |
| } |
| |
| uint64_t get_psw_mask(CPUS390XState *env) |
| { |
| uint64_t r = env->psw.mask; |
| |
| if (tcg_enabled()) { |
| env->cc_op = calc_cc(env, env->cc_op, env->cc_src, env->cc_dst, |
| env->cc_vr); |
| |
| r &= ~PSW_MASK_CC; |
| assert(!(env->cc_op & ~3)); |
| r |= (uint64_t)env->cc_op << 44; |
| } |
| |
| return r; |
| } |
| |
| LowCore *cpu_map_lowcore(CPUS390XState *env) |
| { |
| S390CPU *cpu = s390_env_get_cpu(env); |
| LowCore *lowcore; |
| hwaddr len = sizeof(LowCore); |
| |
| lowcore = cpu_physical_memory_map(env->psa, &len, 1); |
| |
| if (len < sizeof(LowCore)) { |
| cpu_abort(CPU(cpu), "Could not map lowcore\n"); |
| } |
| |
| return lowcore; |
| } |
| |
| void cpu_unmap_lowcore(LowCore *lowcore) |
| { |
| cpu_physical_memory_unmap(lowcore, sizeof(LowCore), 1, sizeof(LowCore)); |
| } |
| |
| void do_restart_interrupt(CPUS390XState *env) |
| { |
| uint64_t mask, addr; |
| LowCore *lowcore; |
| |
| lowcore = cpu_map_lowcore(env); |
| |
| lowcore->restart_old_psw.mask = cpu_to_be64(get_psw_mask(env)); |
| lowcore->restart_old_psw.addr = cpu_to_be64(env->psw.addr); |
| mask = be64_to_cpu(lowcore->restart_new_psw.mask); |
| addr = be64_to_cpu(lowcore->restart_new_psw.addr); |
| |
| cpu_unmap_lowcore(lowcore); |
| |
| load_psw(env, mask, addr); |
| } |
| |
| void s390_cpu_recompute_watchpoints(CPUState *cs) |
| { |
| const int wp_flags = BP_CPU | BP_MEM_WRITE | BP_STOP_BEFORE_ACCESS; |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| |
| /* We are called when the watchpoints have changed. First |
| remove them all. */ |
| cpu_watchpoint_remove_all(cs, BP_CPU); |
| |
| /* Return if PER is not enabled */ |
| if (!(env->psw.mask & PSW_MASK_PER)) { |
| return; |
| } |
| |
| /* Return if storage-alteration event is not enabled. */ |
| if (!(env->cregs[9] & PER_CR9_EVENT_STORE)) { |
| return; |
| } |
| |
| if (env->cregs[10] == 0 && env->cregs[11] == -1LL) { |
| /* We can't create a watchoint spanning the whole memory range, so |
| split it in two parts. */ |
| cpu_watchpoint_insert(cs, 0, 1ULL << 63, wp_flags, NULL); |
| cpu_watchpoint_insert(cs, 1ULL << 63, 1ULL << 63, wp_flags, NULL); |
| } else if (env->cregs[10] > env->cregs[11]) { |
| /* The address range loops, create two watchpoints. */ |
| cpu_watchpoint_insert(cs, env->cregs[10], -env->cregs[10], |
| wp_flags, NULL); |
| cpu_watchpoint_insert(cs, 0, env->cregs[11] + 1, wp_flags, NULL); |
| |
| } else { |
| /* Default case, create a single watchpoint. */ |
| cpu_watchpoint_insert(cs, env->cregs[10], |
| env->cregs[11] - env->cregs[10] + 1, |
| wp_flags, NULL); |
| } |
| } |
| |
| #endif /* CONFIG_USER_ONLY */ |
| |
| void s390_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, |
| int flags) |
| { |
| S390CPU *cpu = S390_CPU(cs); |
| CPUS390XState *env = &cpu->env; |
| int i; |
| |
| if (env->cc_op > 3) { |
| cpu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %15s\n", |
| env->psw.mask, env->psw.addr, cc_name(env->cc_op)); |
| } else { |
| cpu_fprintf(f, "PSW=mask %016" PRIx64 " addr %016" PRIx64 " cc %02x\n", |
| env->psw.mask, env->psw.addr, env->cc_op); |
| } |
| |
| for (i = 0; i < 16; i++) { |
| cpu_fprintf(f, "R%02d=%016" PRIx64, i, env->regs[i]); |
| if ((i % 4) == 3) { |
| cpu_fprintf(f, "\n"); |
| } else { |
| cpu_fprintf(f, " "); |
| } |
| } |
| |
| for (i = 0; i < 16; i++) { |
| cpu_fprintf(f, "F%02d=%016" PRIx64, i, get_freg(env, i)->ll); |
| if ((i % 4) == 3) { |
| cpu_fprintf(f, "\n"); |
| } else { |
| cpu_fprintf(f, " "); |
| } |
| } |
| |
| for (i = 0; i < 32; i++) { |
| cpu_fprintf(f, "V%02d=%016" PRIx64 "%016" PRIx64, i, |
| env->vregs[i][0].ll, env->vregs[i][1].ll); |
| cpu_fprintf(f, (i % 2) ? "\n" : " "); |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| for (i = 0; i < 16; i++) { |
| cpu_fprintf(f, "C%02d=%016" PRIx64, i, env->cregs[i]); |
| if ((i % 4) == 3) { |
| cpu_fprintf(f, "\n"); |
| } else { |
| cpu_fprintf(f, " "); |
| } |
| } |
| #endif |
| |
| #ifdef DEBUG_INLINE_BRANCHES |
| for (i = 0; i < CC_OP_MAX; i++) { |
| cpu_fprintf(f, " %15s = %10ld\t%10ld\n", cc_name(i), |
| inline_branch_miss[i], inline_branch_hit[i]); |
| } |
| #endif |
| |
| cpu_fprintf(f, "\n"); |
| } |
| |
| const char *cc_name(enum cc_op cc_op) |
| { |
| static const char * const cc_names[] = { |
| [CC_OP_CONST0] = "CC_OP_CONST0", |
| [CC_OP_CONST1] = "CC_OP_CONST1", |
| [CC_OP_CONST2] = "CC_OP_CONST2", |
| [CC_OP_CONST3] = "CC_OP_CONST3", |
| [CC_OP_DYNAMIC] = "CC_OP_DYNAMIC", |
| [CC_OP_STATIC] = "CC_OP_STATIC", |
| [CC_OP_NZ] = "CC_OP_NZ", |
| [CC_OP_LTGT_32] = "CC_OP_LTGT_32", |
| [CC_OP_LTGT_64] = "CC_OP_LTGT_64", |
| [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32", |
| [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64", |
| [CC_OP_LTGT0_32] = "CC_OP_LTGT0_32", |
| [CC_OP_LTGT0_64] = "CC_OP_LTGT0_64", |
| [CC_OP_ADD_64] = "CC_OP_ADD_64", |
| [CC_OP_ADDU_64] = "CC_OP_ADDU_64", |
| [CC_OP_ADDC_64] = "CC_OP_ADDC_64", |
| [CC_OP_SUB_64] = "CC_OP_SUB_64", |
| [CC_OP_SUBU_64] = "CC_OP_SUBU_64", |
| [CC_OP_SUBB_64] = "CC_OP_SUBB_64", |
| [CC_OP_ABS_64] = "CC_OP_ABS_64", |
| [CC_OP_NABS_64] = "CC_OP_NABS_64", |
| [CC_OP_ADD_32] = "CC_OP_ADD_32", |
| [CC_OP_ADDU_32] = "CC_OP_ADDU_32", |
| [CC_OP_ADDC_32] = "CC_OP_ADDC_32", |
| [CC_OP_SUB_32] = "CC_OP_SUB_32", |
| [CC_OP_SUBU_32] = "CC_OP_SUBU_32", |
| [CC_OP_SUBB_32] = "CC_OP_SUBB_32", |
| [CC_OP_ABS_32] = "CC_OP_ABS_32", |
| [CC_OP_NABS_32] = "CC_OP_NABS_32", |
| [CC_OP_COMP_32] = "CC_OP_COMP_32", |
| [CC_OP_COMP_64] = "CC_OP_COMP_64", |
| [CC_OP_TM_32] = "CC_OP_TM_32", |
| [CC_OP_TM_64] = "CC_OP_TM_64", |
| [CC_OP_NZ_F32] = "CC_OP_NZ_F32", |
| [CC_OP_NZ_F64] = "CC_OP_NZ_F64", |
| [CC_OP_NZ_F128] = "CC_OP_NZ_F128", |
| [CC_OP_ICM] = "CC_OP_ICM", |
| [CC_OP_SLA_32] = "CC_OP_SLA_32", |
| [CC_OP_SLA_64] = "CC_OP_SLA_64", |
| [CC_OP_FLOGR] = "CC_OP_FLOGR", |
| }; |
| |
| return cc_names[cc_op]; |
| } |
