diff options
Diffstat (limited to 'target/mips/tcg/system/cp0_helper.c')
| -rw-r--r-- | target/mips/tcg/system/cp0_helper.c | 1644 |
1 files changed, 1644 insertions, 0 deletions
diff --git a/target/mips/tcg/system/cp0_helper.c b/target/mips/tcg/system/cp0_helper.c new file mode 100644 index 0000000..79a5c83 --- /dev/null +++ b/target/mips/tcg/system/cp0_helper.c @@ -0,0 +1,1644 @@ +/* + * Helpers for emulation of CP0-related MIPS instructions. + * + * Copyright (C) 2004-2005 Jocelyn Mayer + * Copyright (C) 2020 Wave Computing, Inc. + * Copyright (C) 2020 Aleksandar Markovic <amarkovic@wavecomp.com> + * + * 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 <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/main-loop.h" +#include "cpu.h" +#include "internal.h" +#include "qemu/host-utils.h" +#include "exec/helper-proto.h" +#include "exec/exec-all.h" + + +/* SMP helpers. */ +static bool mips_vpe_is_wfi(MIPSCPU *c) +{ + CPUState *cpu = CPU(c); + CPUMIPSState *env = &c->env; + + /* + * If the VPE is halted but otherwise active, it means it's waiting for + * an interrupt.\ + */ + return cpu->halted && mips_vpe_active(env); +} + +static bool mips_vp_is_wfi(MIPSCPU *c) +{ + CPUState *cpu = CPU(c); + CPUMIPSState *env = &c->env; + + return cpu->halted && mips_vp_active(env); +} + +static inline void mips_vpe_wake(MIPSCPU *c) +{ + /* + * Don't set ->halted = 0 directly, let it be done via cpu_has_work + * because there might be other conditions that state that c should + * be sleeping. + */ + bql_lock(); + cpu_interrupt(CPU(c), CPU_INTERRUPT_WAKE); + bql_unlock(); +} + +static inline void mips_vpe_sleep(MIPSCPU *cpu) +{ + CPUState *cs = CPU(cpu); + + /* + * The VPE was shut off, really go to bed. + * Reset any old _WAKE requests. + */ + cs->halted = 1; + cpu_reset_interrupt(cs, CPU_INTERRUPT_WAKE); +} + +static inline void mips_tc_wake(MIPSCPU *cpu, int tc) +{ + CPUMIPSState *c = &cpu->env; + + /* FIXME: TC reschedule. */ + if (mips_vpe_active(c) && !mips_vpe_is_wfi(cpu)) { + mips_vpe_wake(cpu); + } +} + +static inline void mips_tc_sleep(MIPSCPU *cpu, int tc) +{ + CPUMIPSState *c = &cpu->env; + + /* FIXME: TC reschedule. */ + if (!mips_vpe_active(c)) { + mips_vpe_sleep(cpu); + } +} + +/** + * mips_cpu_map_tc: + * @env: CPU from which mapping is performed. + * @tc: Should point to an int with the value of the global TC index. + * + * This function will transform @tc into a local index within the + * returned #CPUMIPSState. + */ + +/* + * FIXME: This code assumes that all VPEs have the same number of TCs, + * which depends on runtime setup. Can probably be fixed by + * walking the list of CPUMIPSStates. + */ +static CPUMIPSState *mips_cpu_map_tc(CPUMIPSState *env, int *tc) +{ + MIPSCPU *cpu; + CPUState *cs; + CPUState *other_cs; + int vpe_idx; + int tc_idx = *tc; + + if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))) { + /* Not allowed to address other CPUs. */ + *tc = env->current_tc; + return env; + } + + cs = env_cpu(env); + vpe_idx = tc_idx / cs->nr_threads; + *tc = tc_idx % cs->nr_threads; + other_cs = qemu_get_cpu(vpe_idx); + if (other_cs == NULL) { + return env; + } + cpu = MIPS_CPU(other_cs); + return &cpu->env; +} + +/* + * The per VPE CP0_Status register shares some fields with the per TC + * CP0_TCStatus registers. These fields are wired to the same registers, + * so changes to either of them should be reflected on both registers. + * + * Also, EntryHi shares the bottom 8 bit ASID with TCStauts. + * + * These helper call synchronizes the regs for a given cpu. + */ + +/* + * Called for updates to CP0_Status. Defined in "cpu.h" for gdbstub.c. + * static inline void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, + * int tc); + */ + +/* Called for updates to CP0_TCStatus. */ +static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc, + target_ulong v) +{ + uint32_t status; + uint32_t tcu, tmx, tasid, tksu; + uint32_t mask = ((1U << CP0St_CU3) + | (1 << CP0St_CU2) + | (1 << CP0St_CU1) + | (1 << CP0St_CU0) + | (1 << CP0St_MX) + | (3 << CP0St_KSU)); + + tcu = (v >> CP0TCSt_TCU0) & 0xf; + tmx = (v >> CP0TCSt_TMX) & 0x1; + tasid = v & cpu->CP0_EntryHi_ASID_mask; + tksu = (v >> CP0TCSt_TKSU) & 0x3; + + status = tcu << CP0St_CU0; + status |= tmx << CP0St_MX; + status |= tksu << CP0St_KSU; + + cpu->CP0_Status &= ~mask; + cpu->CP0_Status |= status; + + /* Sync the TASID with EntryHi. */ + cpu->CP0_EntryHi &= ~cpu->CP0_EntryHi_ASID_mask; + cpu->CP0_EntryHi |= tasid; + + compute_hflags(cpu); +} + +/* Called for updates to CP0_EntryHi. */ +static void sync_c0_entryhi(CPUMIPSState *cpu, int tc) +{ + int32_t *tcst; + uint32_t asid, v = cpu->CP0_EntryHi; + + asid = v & cpu->CP0_EntryHi_ASID_mask; + + if (tc == cpu->current_tc) { + tcst = &cpu->active_tc.CP0_TCStatus; + } else { + tcst = &cpu->tcs[tc].CP0_TCStatus; + } + + *tcst &= ~cpu->CP0_EntryHi_ASID_mask; + *tcst |= asid; +} + +/* XXX: do not use a global */ +uint32_t cpu_mips_get_random(CPUMIPSState *env) +{ + static uint32_t seed = 1; + static uint32_t prev_idx; + uint32_t idx; + uint32_t nb_rand_tlb = env->tlb->nb_tlb - env->CP0_Wired; + + if (nb_rand_tlb == 1) { + return env->tlb->nb_tlb - 1; + } + + /* Don't return same value twice, so get another value */ + do { + /* + * Use a simple algorithm of Linear Congruential Generator + * from ISO/IEC 9899 standard. + */ + seed = 1103515245 * seed + 12345; + idx = (seed >> 16) % nb_rand_tlb + env->CP0_Wired; + } while (idx == prev_idx); + prev_idx = idx; + return idx; +} + +/* CP0 helpers */ +target_ulong helper_mfc0_mvpcontrol(CPUMIPSState *env) +{ + return env->mvp->CP0_MVPControl; +} + +target_ulong helper_mfc0_mvpconf0(CPUMIPSState *env) +{ + return env->mvp->CP0_MVPConf0; +} + +target_ulong helper_mfc0_mvpconf1(CPUMIPSState *env) +{ + return env->mvp->CP0_MVPConf1; +} + +target_ulong helper_mfc0_random(CPUMIPSState *env) +{ + return (int32_t)cpu_mips_get_random(env); +} + +target_ulong helper_mfc0_tcstatus(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCStatus; +} + +target_ulong helper_mftc0_tcstatus(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCStatus; + } else { + return other->tcs[other_tc].CP0_TCStatus; + } +} + +target_ulong helper_mfc0_tcbind(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCBind; +} + +target_ulong helper_mftc0_tcbind(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCBind; + } else { + return other->tcs[other_tc].CP0_TCBind; + } +} + +target_ulong helper_mfc0_tcrestart(CPUMIPSState *env) +{ + return env->active_tc.PC; +} + +target_ulong helper_mftc0_tcrestart(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.PC; + } else { + return other->tcs[other_tc].PC; + } +} + +target_ulong helper_mfc0_tchalt(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCHalt; +} + +target_ulong helper_mftc0_tchalt(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCHalt; + } else { + return other->tcs[other_tc].CP0_TCHalt; + } +} + +target_ulong helper_mfc0_tccontext(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCContext; +} + +target_ulong helper_mftc0_tccontext(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCContext; + } else { + return other->tcs[other_tc].CP0_TCContext; + } +} + +target_ulong helper_mfc0_tcschedule(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCSchedule; +} + +target_ulong helper_mftc0_tcschedule(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCSchedule; + } else { + return other->tcs[other_tc].CP0_TCSchedule; + } +} + +target_ulong helper_mfc0_tcschefback(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCScheFBack; +} + +target_ulong helper_mftc0_tcschefback(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.CP0_TCScheFBack; + } else { + return other->tcs[other_tc].CP0_TCScheFBack; + } +} + +target_ulong helper_mfc0_count(CPUMIPSState *env) +{ + return (int32_t)cpu_mips_get_count(env); +} + +target_ulong helper_mftc0_entryhi(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_EntryHi; +} + +target_ulong helper_mftc0_cause(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_Cause; +} + +target_ulong helper_mftc0_status(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_Status; +} + +target_ulong helper_mfc0_lladdr(CPUMIPSState *env) +{ + return (int32_t)(env->CP0_LLAddr >> env->CP0_LLAddr_shift); +} + +target_ulong helper_mfc0_maar(CPUMIPSState *env) +{ + return (int32_t) env->CP0_MAAR[env->CP0_MAARI]; +} + +target_ulong helper_mfhc0_maar(CPUMIPSState *env) +{ + return env->CP0_MAAR[env->CP0_MAARI] >> 32; +} + +target_ulong helper_mfc0_watchlo(CPUMIPSState *env, uint32_t sel) +{ + return (int32_t)env->CP0_WatchLo[sel]; +} + +target_ulong helper_mfc0_watchhi(CPUMIPSState *env, uint32_t sel) +{ + return (int32_t) env->CP0_WatchHi[sel]; +} + +target_ulong helper_mfhc0_watchhi(CPUMIPSState *env, uint32_t sel) +{ + return env->CP0_WatchHi[sel] >> 32; +} + +target_ulong helper_mfc0_debug(CPUMIPSState *env) +{ + target_ulong t0 = env->CP0_Debug; + if (env->hflags & MIPS_HFLAG_DM) { + t0 |= 1 << CP0DB_DM; + } + + return t0; +} + +target_ulong helper_mftc0_debug(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + int32_t tcstatus; + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + tcstatus = other->active_tc.CP0_Debug_tcstatus; + } else { + tcstatus = other->tcs[other_tc].CP0_Debug_tcstatus; + } + + /* XXX: Might be wrong, check with EJTAG spec. */ + return (other->CP0_Debug & ~((1 << CP0DB_SSt) | (1 << CP0DB_Halt))) | + (tcstatus & ((1 << CP0DB_SSt) | (1 << CP0DB_Halt))); +} + +#if defined(TARGET_MIPS64) +target_ulong helper_dmfc0_tcrestart(CPUMIPSState *env) +{ + return env->active_tc.PC; +} + +target_ulong helper_dmfc0_tchalt(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCHalt; +} + +target_ulong helper_dmfc0_tccontext(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCContext; +} + +target_ulong helper_dmfc0_tcschedule(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCSchedule; +} + +target_ulong helper_dmfc0_tcschefback(CPUMIPSState *env) +{ + return env->active_tc.CP0_TCScheFBack; +} + +target_ulong helper_dmfc0_lladdr(CPUMIPSState *env) +{ + return env->CP0_LLAddr >> env->CP0_LLAddr_shift; +} + +target_ulong helper_dmfc0_maar(CPUMIPSState *env) +{ + return env->CP0_MAAR[env->CP0_MAARI]; +} + +target_ulong helper_dmfc0_watchlo(CPUMIPSState *env, uint32_t sel) +{ + return env->CP0_WatchLo[sel]; +} + +target_ulong helper_dmfc0_watchhi(CPUMIPSState *env, uint32_t sel) +{ + return env->CP0_WatchHi[sel]; +} + +#endif /* TARGET_MIPS64 */ + +void helper_mtc0_index(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t index_p = env->CP0_Index & 0x80000000; + uint32_t tlb_index = arg1 & 0x7fffffff; + if (tlb_index < env->tlb->nb_tlb) { + if (env->insn_flags & ISA_MIPS_R6) { + index_p |= arg1 & 0x80000000; + } + env->CP0_Index = index_p | tlb_index; + } +} + +void helper_mtc0_mvpcontrol(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = 0; + uint32_t newval; + + if (env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP)) { + mask |= (1 << CP0MVPCo_CPA) | (1 << CP0MVPCo_VPC) | + (1 << CP0MVPCo_EVP); + } + if (env->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC)) { + mask |= (1 << CP0MVPCo_STLB); + } + newval = (env->mvp->CP0_MVPControl & ~mask) | (arg1 & mask); + + /* TODO: Enable/disable shared TLB, enable/disable VPEs. */ + + env->mvp->CP0_MVPControl = newval; +} + +void helper_mtc0_vpecontrol(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask; + uint32_t newval; + + mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) | + (1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC); + newval = (env->CP0_VPEControl & ~mask) | (arg1 & mask); + + /* + * Yield scheduler intercept not implemented. + * Gating storage scheduler intercept not implemented. + */ + + /* TODO: Enable/disable TCs. */ + + env->CP0_VPEControl = newval; +} + +void helper_mttc0_vpecontrol(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + uint32_t mask; + uint32_t newval; + + mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) | + (1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC); + newval = (other->CP0_VPEControl & ~mask) | (arg1 & mask); + + /* TODO: Enable/disable TCs. */ + + other->CP0_VPEControl = newval; +} + +target_ulong helper_mftc0_vpecontrol(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + /* FIXME: Mask away return zero on read bits. */ + return other->CP0_VPEControl; +} + +target_ulong helper_mftc0_vpeconf0(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_VPEConf0; +} + +void helper_mtc0_vpeconf0(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = 0; + uint32_t newval; + + if (env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP)) { + if (env->CP0_VPEConf0 & (1 << CP0VPEC0_VPA)) { + mask |= (0xff << CP0VPEC0_XTC); + } + mask |= (1 << CP0VPEC0_MVP) | (1 << CP0VPEC0_VPA); + } + newval = (env->CP0_VPEConf0 & ~mask) | (arg1 & mask); + + /* TODO: TC exclusive handling due to ERL/EXL. */ + + env->CP0_VPEConf0 = newval; +} + +void helper_mttc0_vpeconf0(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + uint32_t mask = 0; + uint32_t newval; + + mask |= (1 << CP0VPEC0_MVP) | (1 << CP0VPEC0_VPA); + newval = (other->CP0_VPEConf0 & ~mask) | (arg1 & mask); + + /* TODO: TC exclusive handling due to ERL/EXL. */ + other->CP0_VPEConf0 = newval; +} + +void helper_mtc0_vpeconf1(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = 0; + uint32_t newval; + + if (env->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC)) + mask |= (0xff << CP0VPEC1_NCX) | (0xff << CP0VPEC1_NCP2) | + (0xff << CP0VPEC1_NCP1); + newval = (env->CP0_VPEConf1 & ~mask) | (arg1 & mask); + + /* UDI not implemented. */ + /* CP2 not implemented. */ + + /* TODO: Handle FPU (CP1) binding. */ + + env->CP0_VPEConf1 = newval; +} + +void helper_mtc0_yqmask(CPUMIPSState *env, target_ulong arg1) +{ + /* Yield qualifier inputs not implemented. */ + env->CP0_YQMask = 0x00000000; +} + +void helper_mtc0_vpeopt(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_VPEOpt = arg1 & 0x0000ffff; +} + +#define MTC0_ENTRYLO_MASK(env) ((env->PAMask >> 6) & 0x3FFFFFFF) + +void helper_mtc0_entrylo0(CPUMIPSState *env, target_ulong arg1) +{ + /* 1k pages not implemented */ + target_ulong rxi = arg1 & (env->CP0_PageGrain & (3u << CP0PG_XIE)); + env->CP0_EntryLo0 = (arg1 & MTC0_ENTRYLO_MASK(env)) + | (rxi << (CP0EnLo_XI - 30)); +} + +#if defined(TARGET_MIPS64) +#define DMTC0_ENTRYLO_MASK(env) (env->PAMask >> 6) + +void helper_dmtc0_entrylo0(CPUMIPSState *env, uint64_t arg1) +{ + uint64_t rxi = arg1 & ((env->CP0_PageGrain & (3ull << CP0PG_XIE)) << 32); + env->CP0_EntryLo0 = (arg1 & DMTC0_ENTRYLO_MASK(env)) | rxi; +} +#endif + +void helper_mtc0_tcstatus(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = env->CP0_TCStatus_rw_bitmask; + uint32_t newval; + + newval = (env->active_tc.CP0_TCStatus & ~mask) | (arg1 & mask); + + env->active_tc.CP0_TCStatus = newval; + sync_c0_tcstatus(env, env->current_tc, newval); +} + +void helper_mttc0_tcstatus(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.CP0_TCStatus = arg1; + } else { + other->tcs[other_tc].CP0_TCStatus = arg1; + } + sync_c0_tcstatus(other, other_tc, arg1); +} + +void helper_mtc0_tcbind(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = (1 << CP0TCBd_TBE); + uint32_t newval; + + if (env->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC)) { + mask |= (1 << CP0TCBd_CurVPE); + } + newval = (env->active_tc.CP0_TCBind & ~mask) | (arg1 & mask); + env->active_tc.CP0_TCBind = newval; +} + +void helper_mttc0_tcbind(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + uint32_t mask = (1 << CP0TCBd_TBE); + uint32_t newval; + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC)) { + mask |= (1 << CP0TCBd_CurVPE); + } + if (other_tc == other->current_tc) { + newval = (other->active_tc.CP0_TCBind & ~mask) | (arg1 & mask); + other->active_tc.CP0_TCBind = newval; + } else { + newval = (other->tcs[other_tc].CP0_TCBind & ~mask) | (arg1 & mask); + other->tcs[other_tc].CP0_TCBind = newval; + } +} + +void helper_mtc0_tcrestart(CPUMIPSState *env, target_ulong arg1) +{ + env->active_tc.PC = arg1; + env->active_tc.CP0_TCStatus &= ~(1 << CP0TCSt_TDS); + env->CP0_LLAddr = 0; + env->lladdr = 0; + /* MIPS16 not implemented. */ +} + +void helper_mttc0_tcrestart(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.PC = arg1; + other->active_tc.CP0_TCStatus &= ~(1 << CP0TCSt_TDS); + other->CP0_LLAddr = 0; + other->lladdr = 0; + /* MIPS16 not implemented. */ + } else { + other->tcs[other_tc].PC = arg1; + other->tcs[other_tc].CP0_TCStatus &= ~(1 << CP0TCSt_TDS); + other->CP0_LLAddr = 0; + other->lladdr = 0; + /* MIPS16 not implemented. */ + } +} + +void helper_mtc0_tchalt(CPUMIPSState *env, target_ulong arg1) +{ + MIPSCPU *cpu = env_archcpu(env); + + env->active_tc.CP0_TCHalt = arg1 & 0x1; + + /* TODO: Halt TC / Restart (if allocated+active) TC. */ + if (env->active_tc.CP0_TCHalt & 1) { + mips_tc_sleep(cpu, env->current_tc); + } else { + mips_tc_wake(cpu, env->current_tc); + } +} + +void helper_mttc0_tchalt(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + MIPSCPU *other_cpu = env_archcpu(other); + + /* TODO: Halt TC / Restart (if allocated+active) TC. */ + + if (other_tc == other->current_tc) { + other->active_tc.CP0_TCHalt = arg1; + } else { + other->tcs[other_tc].CP0_TCHalt = arg1; + } + + if (arg1 & 1) { + mips_tc_sleep(other_cpu, other_tc); + } else { + mips_tc_wake(other_cpu, other_tc); + } +} + +void helper_mtc0_tccontext(CPUMIPSState *env, target_ulong arg1) +{ + env->active_tc.CP0_TCContext = arg1; +} + +void helper_mttc0_tccontext(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.CP0_TCContext = arg1; + } else { + other->tcs[other_tc].CP0_TCContext = arg1; + } +} + +void helper_mtc0_tcschedule(CPUMIPSState *env, target_ulong arg1) +{ + env->active_tc.CP0_TCSchedule = arg1; +} + +void helper_mttc0_tcschedule(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.CP0_TCSchedule = arg1; + } else { + other->tcs[other_tc].CP0_TCSchedule = arg1; + } +} + +void helper_mtc0_tcschefback(CPUMIPSState *env, target_ulong arg1) +{ + env->active_tc.CP0_TCScheFBack = arg1; +} + +void helper_mttc0_tcschefback(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.CP0_TCScheFBack = arg1; + } else { + other->tcs[other_tc].CP0_TCScheFBack = arg1; + } +} + +void helper_mtc0_entrylo1(CPUMIPSState *env, target_ulong arg1) +{ + /* 1k pages not implemented */ + target_ulong rxi = arg1 & (env->CP0_PageGrain & (3u << CP0PG_XIE)); + env->CP0_EntryLo1 = (arg1 & MTC0_ENTRYLO_MASK(env)) + | (rxi << (CP0EnLo_XI - 30)); +} + +#if defined(TARGET_MIPS64) +void helper_dmtc0_entrylo1(CPUMIPSState *env, uint64_t arg1) +{ + uint64_t rxi = arg1 & ((env->CP0_PageGrain & (3ull << CP0PG_XIE)) << 32); + env->CP0_EntryLo1 = (arg1 & DMTC0_ENTRYLO_MASK(env)) | rxi; +} +#endif + +void helper_mtc0_context(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Context = (env->CP0_Context & 0x007FFFFF) | (arg1 & ~0x007FFFFF); +} + +void helper_mtc0_memorymapid(CPUMIPSState *env, target_ulong arg1) +{ + int32_t old; + old = env->CP0_MemoryMapID; + env->CP0_MemoryMapID = (int32_t) arg1; + /* If the MemoryMapID changes, flush qemu's TLB. */ + if (old != env->CP0_MemoryMapID) { + cpu_mips_tlb_flush(env); + } +} + +void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask) +{ + uint32_t mask; + int maskbits; + + /* Don't care MASKX as we don't support 1KB page */ + mask = extract32((uint32_t)arg1, CP0PM_MASK, 16); + maskbits = cto32(mask); + + /* Ensure no more set bit after first zero */ + if ((mask >> maskbits) != 0) { + goto invalid; + } + /* We don't support VTLB entry smaller than target page */ + if ((maskbits + TARGET_PAGE_BITS_MIN) < TARGET_PAGE_BITS) { + goto invalid; + } + env->CP0_PageMask = mask << CP0PM_MASK; + + return; + +invalid: + /* When invalid, set to default target page size. */ + mask = (~TARGET_PAGE_MASK >> TARGET_PAGE_BITS_MIN); + env->CP0_PageMask = mask << CP0PM_MASK; +} + +void helper_mtc0_pagemask(CPUMIPSState *env, target_ulong arg1) +{ + update_pagemask(env, arg1, &env->CP0_PageMask); +} + +void helper_mtc0_pagegrain(CPUMIPSState *env, target_ulong arg1) +{ + /* SmartMIPS not implemented */ + /* 1k pages not implemented */ + env->CP0_PageGrain = (arg1 & env->CP0_PageGrain_rw_bitmask) | + (env->CP0_PageGrain & ~env->CP0_PageGrain_rw_bitmask); + compute_hflags(env); + restore_pamask(env); +} + +void helper_mtc0_segctl0(CPUMIPSState *env, target_ulong arg1) +{ + CPUState *cs = env_cpu(env); + + env->CP0_SegCtl0 = arg1 & CP0SC0_MASK; + tlb_flush(cs); +} + +void helper_mtc0_segctl1(CPUMIPSState *env, target_ulong arg1) +{ + CPUState *cs = env_cpu(env); + + env->CP0_SegCtl1 = arg1 & CP0SC1_MASK; + tlb_flush(cs); +} + +void helper_mtc0_segctl2(CPUMIPSState *env, target_ulong arg1) +{ + CPUState *cs = env_cpu(env); + + env->CP0_SegCtl2 = arg1 & CP0SC2_MASK; + tlb_flush(cs); +} + +void helper_mtc0_pwfield(CPUMIPSState *env, target_ulong arg1) +{ +#if defined(TARGET_MIPS64) + uint64_t mask = 0x3F3FFFFFFFULL; + uint32_t old_ptei = (env->CP0_PWField >> CP0PF_PTEI) & 0x3FULL; + uint32_t new_ptei = (arg1 >> CP0PF_PTEI) & 0x3FULL; + + if ((env->insn_flags & ISA_MIPS_R6)) { + if (((arg1 >> CP0PF_BDI) & 0x3FULL) < 12) { + mask &= ~(0x3FULL << CP0PF_BDI); + } + if (((arg1 >> CP0PF_GDI) & 0x3FULL) < 12) { + mask &= ~(0x3FULL << CP0PF_GDI); + } + if (((arg1 >> CP0PF_UDI) & 0x3FULL) < 12) { + mask &= ~(0x3FULL << CP0PF_UDI); + } + if (((arg1 >> CP0PF_MDI) & 0x3FULL) < 12) { + mask &= ~(0x3FULL << CP0PF_MDI); + } + if (((arg1 >> CP0PF_PTI) & 0x3FULL) < 12) { + mask &= ~(0x3FULL << CP0PF_PTI); + } + } + env->CP0_PWField = arg1 & mask; + + if ((new_ptei >= 32) || + ((env->insn_flags & ISA_MIPS_R6) && + (new_ptei == 0 || new_ptei == 1))) { + env->CP0_PWField = (env->CP0_PWField & ~0x3FULL) | + (old_ptei << CP0PF_PTEI); + } +#else + uint32_t mask = 0x3FFFFFFF; + uint32_t old_ptew = (env->CP0_PWField >> CP0PF_PTEW) & 0x3F; + uint32_t new_ptew = (arg1 >> CP0PF_PTEW) & 0x3F; + + if ((env->insn_flags & ISA_MIPS_R6)) { + if (((arg1 >> CP0PF_GDW) & 0x3F) < 12) { + mask &= ~(0x3F << CP0PF_GDW); + } + if (((arg1 >> CP0PF_UDW) & 0x3F) < 12) { + mask &= ~(0x3F << CP0PF_UDW); + } + if (((arg1 >> CP0PF_MDW) & 0x3F) < 12) { + mask &= ~(0x3F << CP0PF_MDW); + } + if (((arg1 >> CP0PF_PTW) & 0x3F) < 12) { + mask &= ~(0x3F << CP0PF_PTW); + } + } + env->CP0_PWField = arg1 & mask; + + if ((new_ptew >= 32) || + ((env->insn_flags & ISA_MIPS_R6) && + (new_ptew == 0 || new_ptew == 1))) { + env->CP0_PWField = (env->CP0_PWField & ~0x3F) | + (old_ptew << CP0PF_PTEW); + } +#endif +} + +void helper_mtc0_pwsize(CPUMIPSState *env, target_ulong arg1) +{ +#if defined(TARGET_MIPS64) + env->CP0_PWSize = arg1 & 0x3F7FFFFFFFULL; +#else + env->CP0_PWSize = arg1 & 0x3FFFFFFF; +#endif +} + +void helper_mtc0_wired(CPUMIPSState *env, target_ulong arg1) +{ + if (env->insn_flags & ISA_MIPS_R6) { + if (arg1 < env->tlb->nb_tlb) { + env->CP0_Wired = arg1; + } + } else { + env->CP0_Wired = arg1 % env->tlb->nb_tlb; + } +} + +void helper_mtc0_pwctl(CPUMIPSState *env, target_ulong arg1) +{ +#if defined(TARGET_MIPS64) + /* PWEn = 0. Hardware page table walking is not implemented. */ + env->CP0_PWCtl = (env->CP0_PWCtl & 0x000000C0) | (arg1 & 0x5C00003F); +#else + env->CP0_PWCtl = (arg1 & 0x800000FF); +#endif +} + +void helper_mtc0_srsconf0(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_SRSConf0 |= arg1 & env->CP0_SRSConf0_rw_bitmask; +} + +void helper_mtc0_srsconf1(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_SRSConf1 |= arg1 & env->CP0_SRSConf1_rw_bitmask; +} + +void helper_mtc0_srsconf2(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_SRSConf2 |= arg1 & env->CP0_SRSConf2_rw_bitmask; +} + +void helper_mtc0_srsconf3(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_SRSConf3 |= arg1 & env->CP0_SRSConf3_rw_bitmask; +} + +void helper_mtc0_srsconf4(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_SRSConf4 |= arg1 & env->CP0_SRSConf4_rw_bitmask; +} + +void helper_mtc0_hwrena(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = 0x0000000F; + + if ((env->CP0_Config1 & (1 << CP0C1_PC)) && + (env->insn_flags & ISA_MIPS_R6)) { + mask |= (1 << 4); + } + if (env->insn_flags & ISA_MIPS_R6) { + mask |= (1 << 5); + } + if (env->CP0_Config3 & (1 << CP0C3_ULRI)) { + mask |= (1 << 29); + + if (arg1 & (1 << 29)) { + env->hflags |= MIPS_HFLAG_HWRENA_ULR; + } else { + env->hflags &= ~MIPS_HFLAG_HWRENA_ULR; + } + } + + env->CP0_HWREna = arg1 & mask; +} + +void helper_mtc0_count(CPUMIPSState *env, target_ulong arg1) +{ + cpu_mips_store_count(env, arg1); +} + +void helper_mtc0_entryhi(CPUMIPSState *env, target_ulong arg1) +{ + target_ulong old, val, mask; + mask = (TARGET_PAGE_MASK << 1) | env->CP0_EntryHi_ASID_mask; + if (((env->CP0_Config4 >> CP0C4_IE) & 0x3) >= 2) { + mask |= 1 << CP0EnHi_EHINV; + } + + /* 1k pages not implemented */ +#if defined(TARGET_MIPS64) + if (env->insn_flags & ISA_MIPS_R6) { + int entryhi_r = extract64(arg1, 62, 2); + int config0_at = extract32(env->CP0_Config0, 13, 2); + bool no_supervisor = (env->CP0_Status_rw_bitmask & 0x8) == 0; + if ((entryhi_r == 2) || + (entryhi_r == 1 && (no_supervisor || config0_at == 1))) { + /* skip EntryHi.R field if new value is reserved */ + mask &= ~(0x3ull << 62); + } + } + mask &= env->SEGMask; +#endif + old = env->CP0_EntryHi; + val = (arg1 & mask) | (old & ~mask); + env->CP0_EntryHi = val; + if (ase_mt_available(env)) { + sync_c0_entryhi(env, env->current_tc); + } + /* If the ASID changes, flush qemu's TLB. */ + if ((old & env->CP0_EntryHi_ASID_mask) != + (val & env->CP0_EntryHi_ASID_mask)) { + tlb_flush(env_cpu(env)); + } +} + +void helper_mttc0_entryhi(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + other->CP0_EntryHi = arg1; + sync_c0_entryhi(other, other_tc); +} + +void helper_mtc0_compare(CPUMIPSState *env, target_ulong arg1) +{ + cpu_mips_store_compare(env, arg1); +} + +void helper_mtc0_status(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t val, old; + + old = env->CP0_Status; + cpu_mips_store_status(env, arg1); + val = env->CP0_Status; + + if (qemu_loglevel_mask(CPU_LOG_EXEC)) { + qemu_log("Status %08x (%08x) => %08x (%08x) Cause %08x", + old, old & env->CP0_Cause & CP0Ca_IP_mask, + val, val & env->CP0_Cause & CP0Ca_IP_mask, + env->CP0_Cause); + switch (mips_env_mmu_index(env)) { + case 3: + qemu_log(", ERL\n"); + break; + case MIPS_HFLAG_UM: + qemu_log(", UM\n"); + break; + case MIPS_HFLAG_SM: + qemu_log(", SM\n"); + break; + case MIPS_HFLAG_KM: + qemu_log("\n"); + break; + default: + cpu_abort(env_cpu(env), "Invalid MMU mode!\n"); + break; + } + } +} + +void helper_mttc0_status(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + uint32_t mask = env->CP0_Status_rw_bitmask & ~0xf1000018; + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + other->CP0_Status = (other->CP0_Status & ~mask) | (arg1 & mask); + sync_c0_status(env, other, other_tc); +} + +void helper_mtc0_intctl(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_IntCtl = (env->CP0_IntCtl & ~0x000003e0) | (arg1 & 0x000003e0); +} + +void helper_mtc0_srsctl(CPUMIPSState *env, target_ulong arg1) +{ + uint32_t mask = (0xf << CP0SRSCtl_ESS) | (0xf << CP0SRSCtl_PSS); + env->CP0_SRSCtl = (env->CP0_SRSCtl & ~mask) | (arg1 & mask); +} + +void helper_mtc0_cause(CPUMIPSState *env, target_ulong arg1) +{ + cpu_mips_store_cause(env, arg1); +} + +void helper_mttc0_cause(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + cpu_mips_store_cause(other, arg1); +} + +target_ulong helper_mftc0_epc(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_EPC; +} + +target_ulong helper_mftc0_ebase(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + return other->CP0_EBase; +} + +void helper_mtc0_ebase(CPUMIPSState *env, target_ulong arg1) +{ + target_ulong mask = 0x3FFFF000 | env->CP0_EBaseWG_rw_bitmask; + if (arg1 & env->CP0_EBaseWG_rw_bitmask) { + mask |= ~0x3FFFFFFF; + } + env->CP0_EBase = (env->CP0_EBase & ~mask) | (arg1 & mask); +} + +void helper_mttc0_ebase(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + target_ulong mask = 0x3FFFF000 | env->CP0_EBaseWG_rw_bitmask; + if (arg1 & env->CP0_EBaseWG_rw_bitmask) { + mask |= ~0x3FFFFFFF; + } + other->CP0_EBase = (other->CP0_EBase & ~mask) | (arg1 & mask); +} + +target_ulong helper_mftc0_configx(CPUMIPSState *env, target_ulong idx) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + switch (idx) { + case 0: return other->CP0_Config0; + case 1: return other->CP0_Config1; + case 2: return other->CP0_Config2; + case 3: return other->CP0_Config3; + /* 4 and 5 are reserved. */ + case 6: return other->CP0_Config6; + case 7: return other->CP0_Config7; + default: + break; + } + return 0; +} + +void helper_mtc0_config0(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Config0 = (env->CP0_Config0 & 0x81FFFFF8) | (arg1 & 0x00000007); +} + +void helper_mtc0_config2(CPUMIPSState *env, target_ulong arg1) +{ + /* tertiary/secondary caches not implemented */ + env->CP0_Config2 = (env->CP0_Config2 & 0x8FFF0FFF); +} + +void helper_mtc0_config3(CPUMIPSState *env, target_ulong arg1) +{ + if (env->insn_flags & ASE_MICROMIPS) { + env->CP0_Config3 = (env->CP0_Config3 & ~(1 << CP0C3_ISA_ON_EXC)) | + (arg1 & (1 << CP0C3_ISA_ON_EXC)); + } +} + +void helper_mtc0_config4(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Config4 = (env->CP0_Config4 & (~env->CP0_Config4_rw_bitmask)) | + (arg1 & env->CP0_Config4_rw_bitmask); +} + +void helper_mtc0_config5(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Config5 = (env->CP0_Config5 & (~env->CP0_Config5_rw_bitmask)) | + (arg1 & env->CP0_Config5_rw_bitmask); + env->CP0_EntryHi_ASID_mask = (env->CP0_Config5 & (1 << CP0C5_MI)) ? + 0x0 : (env->CP0_Config4 & (1 << CP0C4_AE)) ? 0x3ff : 0xff; + compute_hflags(env); +} + +void helper_mtc0_lladdr(CPUMIPSState *env, target_ulong arg1) +{ + target_long mask = env->CP0_LLAddr_rw_bitmask; + arg1 = arg1 << env->CP0_LLAddr_shift; + env->CP0_LLAddr = (env->CP0_LLAddr & ~mask) | (arg1 & mask); +} + +#define MTC0_MAAR_MASK(env) \ + ((0x1ULL << 63) | ((env->PAMask >> 4) & ~0xFFFull) | 0x3) + +void helper_mtc0_maar(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_MAAR[env->CP0_MAARI] = arg1 & MTC0_MAAR_MASK(env); +} + +void helper_mthc0_maar(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_MAAR[env->CP0_MAARI] = + (((uint64_t) arg1 << 32) & MTC0_MAAR_MASK(env)) | + (env->CP0_MAAR[env->CP0_MAARI] & 0x00000000ffffffffULL); +} + +void helper_mtc0_maari(CPUMIPSState *env, target_ulong arg1) +{ + int index = arg1 & 0x3f; + if (index == 0x3f) { + /* + * Software may write all ones to INDEX to determine the + * maximum value supported. + */ + env->CP0_MAARI = MIPS_MAAR_MAX - 1; + } else if (index < MIPS_MAAR_MAX) { + env->CP0_MAARI = index; + } + /* + * Other than the all ones, if the value written is not supported, + * then INDEX is unchanged from its previous value. + */ +} + +void helper_mtc0_watchlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + /* + * Watch exceptions for instructions, data loads, data stores + * not implemented. + */ + env->CP0_WatchLo[sel] = (arg1 & ~0x7); +} + +void helper_mtc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + uint64_t mask = 0x40000FF8 | (env->CP0_EntryHi_ASID_mask << CP0WH_ASID); + uint64_t m_bit = env->CP0_WatchHi[sel] & (1 << CP0WH_M); /* read-only */ + if ((env->CP0_Config5 >> CP0C5_MI) & 1) { + mask |= 0xFFFFFFFF00000000ULL; /* MMID */ + } + env->CP0_WatchHi[sel] = m_bit | (arg1 & mask); + env->CP0_WatchHi[sel] &= ~(env->CP0_WatchHi[sel] & arg1 & 0x7); +} + +void helper_mthc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + env->CP0_WatchHi[sel] = ((uint64_t) (arg1) << 32) | + (env->CP0_WatchHi[sel] & 0x00000000ffffffffULL); +} + +void helper_mtc0_xcontext(CPUMIPSState *env, target_ulong arg1) +{ + target_ulong mask = (1ULL << (env->SEGBITS - 7)) - 1; + env->CP0_XContext = (env->CP0_XContext & mask) | (arg1 & ~mask); +} + +void helper_mtc0_framemask(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Framemask = arg1; /* XXX */ +} + +void helper_mtc0_debug(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Debug = (env->CP0_Debug & 0x8C03FC1F) | (arg1 & 0x13300120); + if (arg1 & (1 << CP0DB_DM)) { + env->hflags |= MIPS_HFLAG_DM; + } else { + env->hflags &= ~MIPS_HFLAG_DM; + } +} + +void helper_mttc0_debug(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + uint32_t val = arg1 & ((1 << CP0DB_SSt) | (1 << CP0DB_Halt)); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + /* XXX: Might be wrong, check with EJTAG spec. */ + if (other_tc == other->current_tc) { + other->active_tc.CP0_Debug_tcstatus = val; + } else { + other->tcs[other_tc].CP0_Debug_tcstatus = val; + } + other->CP0_Debug = (other->CP0_Debug & + ((1 << CP0DB_SSt) | (1 << CP0DB_Halt))) | + (arg1 & ~((1 << CP0DB_SSt) | (1 << CP0DB_Halt))); +} + +void helper_mtc0_performance0(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_Performance0 = arg1 & 0x000007ff; +} + +void helper_mtc0_errctl(CPUMIPSState *env, target_ulong arg1) +{ + int32_t wst = arg1 & (1 << CP0EC_WST); + int32_t spr = arg1 & (1 << CP0EC_SPR); + int32_t itc = env->itc_tag ? (arg1 & (1 << CP0EC_ITC)) : 0; + + env->CP0_ErrCtl = wst | spr | itc; + + if (itc && !wst && !spr) { + env->hflags |= MIPS_HFLAG_ITC_CACHE; + } else { + env->hflags &= ~MIPS_HFLAG_ITC_CACHE; + } +} + +void helper_mtc0_taglo(CPUMIPSState *env, target_ulong arg1) +{ + if (env->hflags & MIPS_HFLAG_ITC_CACHE) { + /* + * If CACHE instruction is configured for ITC tags then make all + * CP0.TagLo bits writable. The actual write to ITC Configuration + * Tag will take care of the read-only bits. + */ + env->CP0_TagLo = arg1; + } else { + env->CP0_TagLo = arg1 & 0xFFFFFCF6; + } +} + +void helper_mtc0_datalo(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_DataLo = arg1; /* XXX */ +} + +void helper_mtc0_taghi(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_TagHi = arg1; /* XXX */ +} + +void helper_mtc0_datahi(CPUMIPSState *env, target_ulong arg1) +{ + env->CP0_DataHi = arg1; /* XXX */ +} + +/* MIPS MT functions */ +target_ulong helper_mftgpr(CPUMIPSState *env, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.gpr[sel]; + } else { + return other->tcs[other_tc].gpr[sel]; + } +} + +target_ulong helper_mftlo(CPUMIPSState *env, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.LO[sel]; + } else { + return other->tcs[other_tc].LO[sel]; + } +} + +target_ulong helper_mfthi(CPUMIPSState *env, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.HI[sel]; + } else { + return other->tcs[other_tc].HI[sel]; + } +} + +target_ulong helper_mftacx(CPUMIPSState *env, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.ACX[sel]; + } else { + return other->tcs[other_tc].ACX[sel]; + } +} + +target_ulong helper_mftdsp(CPUMIPSState *env) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + return other->active_tc.DSPControl; + } else { + return other->tcs[other_tc].DSPControl; + } +} + +void helper_mttgpr(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.gpr[sel] = arg1; + } else { + other->tcs[other_tc].gpr[sel] = arg1; + } +} + +void helper_mttlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.LO[sel] = arg1; + } else { + other->tcs[other_tc].LO[sel] = arg1; + } +} + +void helper_mtthi(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.HI[sel] = arg1; + } else { + other->tcs[other_tc].HI[sel] = arg1; + } +} + +void helper_mttacx(CPUMIPSState *env, target_ulong arg1, uint32_t sel) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.ACX[sel] = arg1; + } else { + other->tcs[other_tc].ACX[sel] = arg1; + } +} + +void helper_mttdsp(CPUMIPSState *env, target_ulong arg1) +{ + int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC); + CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc); + + if (other_tc == other->current_tc) { + other->active_tc.DSPControl = arg1; + } else { + other->tcs[other_tc].DSPControl = arg1; + } +} + +/* MIPS MT functions */ +target_ulong helper_dmt(void) +{ + /* TODO */ + return 0; +} + +target_ulong helper_emt(void) +{ + /* TODO */ + return 0; +} + +target_ulong helper_dvpe(CPUMIPSState *env) +{ + CPUState *other_cs = first_cpu; + target_ulong prev = env->mvp->CP0_MVPControl; + + CPU_FOREACH(other_cs) { + MIPSCPU *other_cpu = MIPS_CPU(other_cs); + /* Turn off all VPEs except the one executing the dvpe. */ + if (&other_cpu->env != env) { + other_cpu->env.mvp->CP0_MVPControl &= ~(1 << CP0MVPCo_EVP); + mips_vpe_sleep(other_cpu); + } + } + return prev; +} + +target_ulong helper_evpe(CPUMIPSState *env) +{ + CPUState *other_cs = first_cpu; + target_ulong prev = env->mvp->CP0_MVPControl; + + CPU_FOREACH(other_cs) { + MIPSCPU *other_cpu = MIPS_CPU(other_cs); + + if (&other_cpu->env != env + /* If the VPE is WFI, don't disturb its sleep. */ + && !mips_vpe_is_wfi(other_cpu)) { + /* Enable the VPE. */ + other_cpu->env.mvp->CP0_MVPControl |= (1 << CP0MVPCo_EVP); + mips_vpe_wake(other_cpu); /* And wake it up. */ + } + } + return prev; +} + +/* R6 Multi-threading */ +target_ulong helper_dvp(CPUMIPSState *env) +{ + CPUState *other_cs = first_cpu; + target_ulong prev = env->CP0_VPControl; + + if (!((env->CP0_VPControl >> CP0VPCtl_DIS) & 1)) { + CPU_FOREACH(other_cs) { + MIPSCPU *other_cpu = MIPS_CPU(other_cs); + /* Turn off all VPs except the one executing the dvp. */ + if (&other_cpu->env != env) { + mips_vpe_sleep(other_cpu); + } + } + env->CP0_VPControl |= (1 << CP0VPCtl_DIS); + } + return prev; +} + +target_ulong helper_evp(CPUMIPSState *env) +{ + CPUState *other_cs = first_cpu; + target_ulong prev = env->CP0_VPControl; + + if ((env->CP0_VPControl >> CP0VPCtl_DIS) & 1) { + CPU_FOREACH(other_cs) { + MIPSCPU *other_cpu = MIPS_CPU(other_cs); + if ((&other_cpu->env != env) && !mips_vp_is_wfi(other_cpu)) { + /* + * If the VP is WFI, don't disturb its sleep. + * Otherwise, wake it up. + */ + mips_vpe_wake(other_cpu); + } + } + env->CP0_VPControl &= ~(1 << CP0VPCtl_DIS); + } + return prev; +} |