/* * PowerPC emulation special registers manipulation helpers for qemu. * * Copyright (c) 2003-2007 Jocelyn Mayer * * 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 2.1 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 . */ #include "qemu/osdep.h" #include "cpu.h" #include "qemu/main-loop.h" #include "exec/exec-all.h" #include "sysemu/kvm.h" #include "helper_regs.h" #include "power8-pmu.h" #include "cpu-models.h" #include "spr_common.h" /* Swap temporary saved registers with GPRs */ void hreg_swap_gpr_tgpr(CPUPPCState *env) { target_ulong tmp; tmp = env->gpr[0]; env->gpr[0] = env->tgpr[0]; env->tgpr[0] = tmp; tmp = env->gpr[1]; env->gpr[1] = env->tgpr[1]; env->tgpr[1] = tmp; tmp = env->gpr[2]; env->gpr[2] = env->tgpr[2]; env->tgpr[2] = tmp; tmp = env->gpr[3]; env->gpr[3] = env->tgpr[3]; env->tgpr[3] = tmp; } static uint32_t hreg_compute_hflags_value(CPUPPCState *env) { target_ulong msr = env->msr; uint32_t ppc_flags = env->flags; uint32_t hflags = 0; uint32_t msr_mask; /* Some bits come straight across from MSR. */ QEMU_BUILD_BUG_ON(MSR_LE != HFLAGS_LE); QEMU_BUILD_BUG_ON(MSR_PR != HFLAGS_PR); QEMU_BUILD_BUG_ON(MSR_DR != HFLAGS_DR); QEMU_BUILD_BUG_ON(MSR_FP != HFLAGS_FP); msr_mask = ((1 << MSR_LE) | (1 << MSR_PR) | (1 << MSR_DR) | (1 << MSR_FP)); if (ppc_flags & POWERPC_FLAG_DE) { target_ulong dbcr0 = env->spr[SPR_BOOKE_DBCR0]; if (dbcr0 & DBCR0_ICMP) { hflags |= 1 << HFLAGS_SE; } if (dbcr0 & DBCR0_BRT) { hflags |= 1 << HFLAGS_BE; } } else { if (ppc_flags & POWERPC_FLAG_BE) { QEMU_BUILD_BUG_ON(MSR_BE != HFLAGS_BE); msr_mask |= 1 << MSR_BE; } if (ppc_flags & POWERPC_FLAG_SE) { QEMU_BUILD_BUG_ON(MSR_SE != HFLAGS_SE); msr_mask |= 1 << MSR_SE; } } if (msr_is_64bit(env, msr)) { hflags |= 1 << HFLAGS_64; } if ((ppc_flags & POWERPC_FLAG_SPE) && (msr & (1 << MSR_SPE))) { hflags |= 1 << HFLAGS_SPE; } if (ppc_flags & POWERPC_FLAG_VRE) { QEMU_BUILD_BUG_ON(MSR_VR != HFLAGS_VR); msr_mask |= 1 << MSR_VR; } if (ppc_flags & POWERPC_FLAG_VSX) { QEMU_BUILD_BUG_ON(MSR_VSX != HFLAGS_VSX); msr_mask |= 1 << MSR_VSX; } if ((ppc_flags & POWERPC_FLAG_TM) && (msr & (1ull << MSR_TM))) { hflags |= 1 << HFLAGS_TM; } if (env->spr[SPR_LPCR] & LPCR_GTSE) { hflags |= 1 << HFLAGS_GTSE; } if (env->spr[SPR_LPCR] & LPCR_HR) { hflags |= 1 << HFLAGS_HR; } if (env->spr[SPR_POWER_MMCR0] & MMCR0_PMCC0) { hflags |= 1 << HFLAGS_PMCC0; } if (env->spr[SPR_POWER_MMCR0] & MMCR0_PMCC1) { hflags |= 1 << HFLAGS_PMCC1; } #ifndef CONFIG_USER_ONLY if (!env->has_hv_mode || (msr & (1ull << MSR_HV))) { hflags |= 1 << HFLAGS_HV; } #if defined(TARGET_PPC64) if (env->pmc_ins_cnt) { hflags |= 1 << HFLAGS_INSN_CNT; } #endif /* * This is our encoding for server processors. The architecture * specifies that there is no such thing as userspace with * translation off, however it appears that MacOS does it and some * 32-bit CPUs support it. Weird... * * 0 = Guest User space virtual mode * 1 = Guest Kernel space virtual mode * 2 = Guest User space real mode * 3 = Guest Kernel space real mode * 4 = HV User space virtual mode * 5 = HV Kernel space virtual mode * 6 = HV User space real mode * 7 = HV Kernel space real mode * * For BookE, we need 8 MMU modes as follow: * * 0 = AS 0 HV User space * 1 = AS 0 HV Kernel space * 2 = AS 1 HV User space * 3 = AS 1 HV Kernel space * 4 = AS 0 Guest User space * 5 = AS 0 Guest Kernel space * 6 = AS 1 Guest User space * 7 = AS 1 Guest Kernel space */ unsigned immu_idx, dmmu_idx; dmmu_idx = msr & (1 << MSR_PR) ? 0 : 1; if (env->mmu_model == POWERPC_MMU_BOOKE || env->mmu_model == POWERPC_MMU_BOOKE206) { dmmu_idx |= msr & (1 << MSR_GS) ? 4 : 0; immu_idx = dmmu_idx; immu_idx |= msr & (1 << MSR_IS) ? 2 : 0; dmmu_idx |= msr & (1 << MSR_DS) ? 2 : 0; } else { dmmu_idx |= msr & (1ull << MSR_HV) ? 4 : 0; immu_idx = dmmu_idx; immu_idx |= msr & (1 << MSR_IR) ? 0 : 2; dmmu_idx |= msr & (1 << MSR_DR) ? 0 : 2; } hflags |= immu_idx << HFLAGS_IMMU_IDX; hflags |= dmmu_idx << HFLAGS_DMMU_IDX; #endif return hflags | (msr & msr_mask); } void hreg_compute_hflags(CPUPPCState *env) { env->hflags = hreg_compute_hflags_value(env); } #ifdef CONFIG_DEBUG_TCG void cpu_get_tb_cpu_state(CPUPPCState *env, target_ulong *pc, target_ulong *cs_base, uint32_t *flags) { uint32_t hflags_current = env->hflags; uint32_t hflags_rebuilt; *pc = env->nip; *cs_base = 0; *flags = hflags_current; hflags_rebuilt = hreg_compute_hflags_value(env); if (unlikely(hflags_current != hflags_rebuilt)) { cpu_abort(env_cpu(env), "TCG hflags mismatch (current:0x%08x rebuilt:0x%08x)\n", hflags_current, hflags_rebuilt); } } #endif void cpu_interrupt_exittb(CPUState *cs) { /* * We don't need to worry about translation blocks * when running with KVM. */ if (kvm_enabled()) { return; } if (!qemu_mutex_iothread_locked()) { qemu_mutex_lock_iothread(); cpu_interrupt(cs, CPU_INTERRUPT_EXITTB); qemu_mutex_unlock_iothread(); } else { cpu_interrupt(cs, CPU_INTERRUPT_EXITTB); } } int hreg_store_msr(CPUPPCState *env, target_ulong value, int alter_hv) { int excp; #if !defined(CONFIG_USER_ONLY) CPUState *cs = env_cpu(env); #endif excp = 0; value &= env->msr_mask; #if !defined(CONFIG_USER_ONLY) /* Neither mtmsr nor guest state can alter HV */ if (!alter_hv || !(env->msr & MSR_HVB)) { value &= ~MSR_HVB; value |= env->msr & MSR_HVB; } if (((value >> MSR_IR) & 1) != msr_ir || ((value >> MSR_DR) & 1) != msr_dr) { cpu_interrupt_exittb(cs); } if ((env->mmu_model == POWERPC_MMU_BOOKE || env->mmu_model == POWERPC_MMU_BOOKE206) && ((value >> MSR_GS) & 1) != msr_gs) { cpu_interrupt_exittb(cs); } if (unlikely((env->flags & POWERPC_FLAG_TGPR) && ((value ^ env->msr) & (1 << MSR_TGPR)))) { /* Swap temporary saved registers with GPRs */ hreg_swap_gpr_tgpr(env); } if (unlikely((value >> MSR_EP) & 1) != msr_ep) { env->excp_prefix = ((value >> MSR_EP) & 1) * 0xFFF00000; } /* * If PR=1 then EE, IR and DR must be 1 * * Note: We only enforce this on 64-bit server processors. * It appears that: * - 32-bit implementations supports PR=1 and EE/DR/IR=0 and MacOS * exploits it. * - 64-bit embedded implementations do not need any operation to be * performed when PR is set. */ if (is_book3s_arch2x(env) && ((value >> MSR_PR) & 1)) { value |= (1 << MSR_EE) | (1 << MSR_DR) | (1 << MSR_IR); } #endif env->msr = value; hreg_compute_hflags(env); #if !defined(CONFIG_USER_ONLY) if (unlikely(msr_pow == 1)) { if (!env->pending_interrupts && (*env->check_pow)(env)) { cs->halted = 1; excp = EXCP_HALTED; } } #endif return excp; } #ifdef CONFIG_SOFTMMU void store_40x_sler(CPUPPCState *env, uint32_t val) { /* XXX: TO BE FIXED */ if (val != 0x00000000) { cpu_abort(env_cpu(env), "Little-endian regions are not supported by now\n"); } env->spr[SPR_405_SLER] = val; } #endif /* CONFIG_SOFTMMU */ #ifndef CONFIG_USER_ONLY void check_tlb_flush(CPUPPCState *env, bool global) { CPUState *cs = env_cpu(env); /* Handle global flushes first */ if (global && (env->tlb_need_flush & TLB_NEED_GLOBAL_FLUSH)) { env->tlb_need_flush &= ~TLB_NEED_GLOBAL_FLUSH; env->tlb_need_flush &= ~TLB_NEED_LOCAL_FLUSH; tlb_flush_all_cpus_synced(cs); return; } /* Then handle local ones */ if (env->tlb_need_flush & TLB_NEED_LOCAL_FLUSH) { env->tlb_need_flush &= ~TLB_NEED_LOCAL_FLUSH; tlb_flush(cs); } } #endif /** * _spr_register * * Register an SPR with all the callbacks required for tcg, * and the ID number for KVM. * * The reason for the conditional compilation is that the tcg functions * may be compiled out, and the system kvm header may not be available * for supplying the ID numbers. This is ugly, but the best we can do. */ void _spr_register(CPUPPCState *env, int num, const char *name, USR_ARG(spr_callback *uea_read) USR_ARG(spr_callback *uea_write) SYS_ARG(spr_callback *oea_read) SYS_ARG(spr_callback *oea_write) SYS_ARG(spr_callback *hea_read) SYS_ARG(spr_callback *hea_write) KVM_ARG(uint64_t one_reg_id) target_ulong initial_value) { ppc_spr_t *spr = &env->spr_cb[num]; /* No SPR should be registered twice. */ assert(spr->name == NULL); assert(name != NULL); spr->name = name; spr->default_value = initial_value; env->spr[num] = initial_value; #ifdef CONFIG_TCG spr->uea_read = uea_read; spr->uea_write = uea_write; # ifndef CONFIG_USER_ONLY spr->oea_read = oea_read; spr->oea_write = oea_write; spr->hea_read = hea_read; spr->hea_write = hea_write; # endif #endif #ifdef CONFIG_KVM spr->one_reg_id = one_reg_id; #endif } /* Generic PowerPC SPRs */ void register_generic_sprs(PowerPCCPU *cpu) { PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); CPUPPCState *env = &cpu->env; /* Integer processing */ spr_register(env, SPR_XER, "XER", &spr_read_xer, &spr_write_xer, &spr_read_xer, &spr_write_xer, 0x00000000); /* Branch control */ spr_register(env, SPR_LR, "LR", &spr_read_lr, &spr_write_lr, &spr_read_lr, &spr_write_lr, 0x00000000); spr_register(env, SPR_CTR, "CTR", &spr_read_ctr, &spr_write_ctr, &spr_read_ctr, &spr_write_ctr, 0x00000000); /* Interrupt processing */ spr_register(env, SPR_SRR0, "SRR0", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); spr_register(env, SPR_SRR1, "SRR1", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); /* Processor control */ spr_register(env, SPR_SPRG0, "SPRG0", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); spr_register(env, SPR_SPRG1, "SPRG1", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); spr_register(env, SPR_SPRG2, "SPRG2", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); spr_register(env, SPR_SPRG3, "SPRG3", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); spr_register(env, SPR_PVR, "PVR", /* Linux permits userspace to read PVR */ #if defined(CONFIG_LINUX_USER) &spr_read_generic, #else SPR_NOACCESS, #endif SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, pcc->pvr); /* Register SVR if it's defined to anything else than POWERPC_SVR_NONE */ if (pcc->svr != POWERPC_SVR_NONE) { if (pcc->svr & POWERPC_SVR_E500) { spr_register(env, SPR_E500_SVR, "SVR", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, pcc->svr & ~POWERPC_SVR_E500); } else { spr_register(env, SPR_SVR, "SVR", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, pcc->svr); } } /* Time base */ spr_register(env, SPR_VTBL, "TBL", &spr_read_tbl, SPR_NOACCESS, &spr_read_tbl, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_TBL, "TBL", &spr_read_tbl, SPR_NOACCESS, &spr_read_tbl, &spr_write_tbl, 0x00000000); spr_register(env, SPR_VTBU, "TBU", &spr_read_tbu, SPR_NOACCESS, &spr_read_tbu, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_TBU, "TBU", &spr_read_tbu, SPR_NOACCESS, &spr_read_tbu, &spr_write_tbu, 0x00000000); } void register_non_embedded_sprs(CPUPPCState *env) { /* Exception processing */ spr_register_kvm(env, SPR_DSISR, "DSISR", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, KVM_REG_PPC_DSISR, 0x00000000); spr_register_kvm(env, SPR_DAR, "DAR", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, KVM_REG_PPC_DAR, 0x00000000); /* Timer */ spr_register(env, SPR_DECR, "DECR", SPR_NOACCESS, SPR_NOACCESS, &spr_read_decr, &spr_write_decr, 0x00000000); } /* Storage Description Register 1 */ void register_sdr1_sprs(CPUPPCState *env) { #ifndef CONFIG_USER_ONLY if (env->has_hv_mode) { /* * SDR1 is a hypervisor resource on CPUs which have a * hypervisor mode */ spr_register_hv(env, SPR_SDR1, "SDR1", SPR_NOACCESS, SPR_NOACCESS, SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_sdr1, 0x00000000); } else { spr_register(env, SPR_SDR1, "SDR1", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_sdr1, 0x00000000); } #endif } /* BATs 0-3 */ void register_low_BATs(CPUPPCState *env) { #if !defined(CONFIG_USER_ONLY) spr_register(env, SPR_IBAT0U, "IBAT0U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatu, 0x00000000); spr_register(env, SPR_IBAT0L, "IBAT0L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatl, 0x00000000); spr_register(env, SPR_IBAT1U, "IBAT1U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatu, 0x00000000); spr_register(env, SPR_IBAT1L, "IBAT1L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatl, 0x00000000); spr_register(env, SPR_IBAT2U, "IBAT2U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatu, 0x00000000); spr_register(env, SPR_IBAT2L, "IBAT2L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatl, 0x00000000); spr_register(env, SPR_IBAT3U, "IBAT3U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatu, 0x00000000); spr_register(env, SPR_IBAT3L, "IBAT3L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat, &spr_write_ibatl, 0x00000000); spr_register(env, SPR_DBAT0U, "DBAT0U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatu, 0x00000000); spr_register(env, SPR_DBAT0L, "DBAT0L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatl, 0x00000000); spr_register(env, SPR_DBAT1U, "DBAT1U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatu, 0x00000000); spr_register(env, SPR_DBAT1L, "DBAT1L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatl, 0x00000000); spr_register(env, SPR_DBAT2U, "DBAT2U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatu, 0x00000000); spr_register(env, SPR_DBAT2L, "DBAT2L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatl, 0x00000000); spr_register(env, SPR_DBAT3U, "DBAT3U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatu, 0x00000000); spr_register(env, SPR_DBAT3L, "DBAT3L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat, &spr_write_dbatl, 0x00000000); env->nb_BATs += 4; #endif } /* BATs 4-7 */ void register_high_BATs(CPUPPCState *env) { #if !defined(CONFIG_USER_ONLY) spr_register(env, SPR_IBAT4U, "IBAT4U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatu_h, 0x00000000); spr_register(env, SPR_IBAT4L, "IBAT4L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatl_h, 0x00000000); spr_register(env, SPR_IBAT5U, "IBAT5U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatu_h, 0x00000000); spr_register(env, SPR_IBAT5L, "IBAT5L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatl_h, 0x00000000); spr_register(env, SPR_IBAT6U, "IBAT6U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatu_h, 0x00000000); spr_register(env, SPR_IBAT6L, "IBAT6L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatl_h, 0x00000000); spr_register(env, SPR_IBAT7U, "IBAT7U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatu_h, 0x00000000); spr_register(env, SPR_IBAT7L, "IBAT7L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_ibat_h, &spr_write_ibatl_h, 0x00000000); spr_register(env, SPR_DBAT4U, "DBAT4U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatu_h, 0x00000000); spr_register(env, SPR_DBAT4L, "DBAT4L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatl_h, 0x00000000); spr_register(env, SPR_DBAT5U, "DBAT5U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatu_h, 0x00000000); spr_register(env, SPR_DBAT5L, "DBAT5L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatl_h, 0x00000000); spr_register(env, SPR_DBAT6U, "DBAT6U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatu_h, 0x00000000); spr_register(env, SPR_DBAT6L, "DBAT6L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatl_h, 0x00000000); spr_register(env, SPR_DBAT7U, "DBAT7U", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatu_h, 0x00000000); spr_register(env, SPR_DBAT7L, "DBAT7L", SPR_NOACCESS, SPR_NOACCESS, &spr_read_dbat_h, &spr_write_dbatl_h, 0x00000000); env->nb_BATs += 4; #endif } /* Softare table search registers */ void register_6xx_7xx_soft_tlb(CPUPPCState *env, int nb_tlbs, int nb_ways) { #if !defined(CONFIG_USER_ONLY) env->nb_tlb = nb_tlbs; env->nb_ways = nb_ways; env->id_tlbs = 1; env->tlb_type = TLB_6XX; spr_register(env, SPR_DMISS, "DMISS", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_DCMP, "DCMP", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_HASH1, "HASH1", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_HASH2, "HASH2", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_IMISS, "IMISS", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_ICMP, "ICMP", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_RPA, "RPA", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, 0x00000000); #endif } void register_thrm_sprs(CPUPPCState *env) { /* Thermal management */ spr_register(env, SPR_THRM1, "THRM1", SPR_NOACCESS, SPR_NOACCESS, &spr_read_thrm, &spr_write_generic, 0x00000000); spr_register(env, SPR_THRM2, "THRM2", SPR_NOACCESS, SPR_NOACCESS, &spr_read_thrm, &spr_write_generic, 0x00000000); spr_register(env, SPR_THRM3, "THRM3", SPR_NOACCESS, SPR_NOACCESS, &spr_read_thrm, &spr_write_generic, 0x00000000); } void register_usprgh_sprs(CPUPPCState *env) { spr_register(env, SPR_USPRG4, "USPRG4", &spr_read_ureg, SPR_NOACCESS, &spr_read_ureg, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_USPRG5, "USPRG5", &spr_read_ureg, SPR_NOACCESS, &spr_read_ureg, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_USPRG6, "USPRG6", &spr_read_ureg, SPR_NOACCESS, &spr_read_ureg, SPR_NOACCESS, 0x00000000); spr_register(env, SPR_USPRG7, "USPRG7", &spr_read_ureg, SPR_NOACCESS, &spr_read_ureg, SPR_NOACCESS, 0x00000000); }