| /* |
| * SH4 emulation |
| * |
| * Copyright (c) 2005 Samuel Tardieu |
| * |
| * 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/>. |
| */ |
| |
| #ifndef SH4_CPU_H |
| #define SH4_CPU_H |
| |
| #include "cpu-qom.h" |
| #include "exec/cpu-defs.h" |
| #include "qemu/cpu-float.h" |
| |
| /* CPU Subtypes */ |
| #define SH_CPU_SH7750 (1 << 0) |
| #define SH_CPU_SH7750S (1 << 1) |
| #define SH_CPU_SH7750R (1 << 2) |
| #define SH_CPU_SH7751 (1 << 3) |
| #define SH_CPU_SH7751R (1 << 4) |
| #define SH_CPU_SH7785 (1 << 5) |
| #define SH_CPU_SH7750_ALL (SH_CPU_SH7750 | SH_CPU_SH7750S | SH_CPU_SH7750R) |
| #define SH_CPU_SH7751_ALL (SH_CPU_SH7751 | SH_CPU_SH7751R) |
| |
| #define SR_MD 30 |
| #define SR_RB 29 |
| #define SR_BL 28 |
| #define SR_FD 15 |
| #define SR_M 9 |
| #define SR_Q 8 |
| #define SR_I3 7 |
| #define SR_I2 6 |
| #define SR_I1 5 |
| #define SR_I0 4 |
| #define SR_S 1 |
| #define SR_T 0 |
| |
| #define FPSCR_MASK (0x003fffff) |
| #define FPSCR_FR (1 << 21) |
| #define FPSCR_SZ (1 << 20) |
| #define FPSCR_PR (1 << 19) |
| #define FPSCR_DN (1 << 18) |
| #define FPSCR_CAUSE_MASK (0x3f << 12) |
| #define FPSCR_CAUSE_SHIFT (12) |
| #define FPSCR_CAUSE_E (1 << 17) |
| #define FPSCR_CAUSE_V (1 << 16) |
| #define FPSCR_CAUSE_Z (1 << 15) |
| #define FPSCR_CAUSE_O (1 << 14) |
| #define FPSCR_CAUSE_U (1 << 13) |
| #define FPSCR_CAUSE_I (1 << 12) |
| #define FPSCR_ENABLE_MASK (0x1f << 7) |
| #define FPSCR_ENABLE_SHIFT (7) |
| #define FPSCR_ENABLE_V (1 << 11) |
| #define FPSCR_ENABLE_Z (1 << 10) |
| #define FPSCR_ENABLE_O (1 << 9) |
| #define FPSCR_ENABLE_U (1 << 8) |
| #define FPSCR_ENABLE_I (1 << 7) |
| #define FPSCR_FLAG_MASK (0x1f << 2) |
| #define FPSCR_FLAG_SHIFT (2) |
| #define FPSCR_FLAG_V (1 << 6) |
| #define FPSCR_FLAG_Z (1 << 5) |
| #define FPSCR_FLAG_O (1 << 4) |
| #define FPSCR_FLAG_U (1 << 3) |
| #define FPSCR_FLAG_I (1 << 2) |
| #define FPSCR_RM_MASK (0x03 << 0) |
| #define FPSCR_RM_NEAREST (0 << 0) |
| #define FPSCR_RM_ZERO (1 << 0) |
| |
| #define TB_FLAG_DELAY_SLOT (1 << 0) |
| #define TB_FLAG_DELAY_SLOT_COND (1 << 1) |
| #define TB_FLAG_DELAY_SLOT_RTE (1 << 2) |
| #define TB_FLAG_PENDING_MOVCA (1 << 3) |
| #define TB_FLAG_GUSA_SHIFT 4 /* [11:4] */ |
| #define TB_FLAG_GUSA_EXCLUSIVE (1 << 12) |
| #define TB_FLAG_UNALIGN (1 << 13) |
| #define TB_FLAG_SR_FD (1 << SR_FD) /* 15 */ |
| #define TB_FLAG_FPSCR_PR FPSCR_PR /* 19 */ |
| #define TB_FLAG_FPSCR_SZ FPSCR_SZ /* 20 */ |
| #define TB_FLAG_FPSCR_FR FPSCR_FR /* 21 */ |
| #define TB_FLAG_SR_RB (1 << SR_RB) /* 29 */ |
| #define TB_FLAG_SR_MD (1 << SR_MD) /* 30 */ |
| |
| #define TB_FLAG_DELAY_SLOT_MASK (TB_FLAG_DELAY_SLOT | \ |
| TB_FLAG_DELAY_SLOT_COND | \ |
| TB_FLAG_DELAY_SLOT_RTE) |
| #define TB_FLAG_GUSA_MASK ((0xff << TB_FLAG_GUSA_SHIFT) | \ |
| TB_FLAG_GUSA_EXCLUSIVE) |
| #define TB_FLAG_FPSCR_MASK (TB_FLAG_FPSCR_PR | \ |
| TB_FLAG_FPSCR_SZ | \ |
| TB_FLAG_FPSCR_FR) |
| #define TB_FLAG_SR_MASK (TB_FLAG_SR_FD | \ |
| TB_FLAG_SR_RB | \ |
| TB_FLAG_SR_MD) |
| #define TB_FLAG_ENVFLAGS_MASK (TB_FLAG_DELAY_SLOT_MASK | \ |
| TB_FLAG_GUSA_MASK) |
| |
| typedef struct tlb_t { |
| uint32_t vpn; /* virtual page number */ |
| uint32_t ppn; /* physical page number */ |
| uint32_t size; /* mapped page size in bytes */ |
| uint8_t asid; /* address space identifier */ |
| uint8_t v:1; /* validity */ |
| uint8_t sz:2; /* page size */ |
| uint8_t sh:1; /* share status */ |
| uint8_t c:1; /* cacheability */ |
| uint8_t pr:2; /* protection key */ |
| uint8_t d:1; /* dirty */ |
| uint8_t wt:1; /* write through */ |
| uint8_t sa:3; /* space attribute (PCMCIA) */ |
| uint8_t tc:1; /* timing control */ |
| } tlb_t; |
| |
| #define UTLB_SIZE 64 |
| #define ITLB_SIZE 4 |
| |
| #define TARGET_INSN_START_EXTRA_WORDS 1 |
| |
| enum sh_features { |
| SH_FEATURE_SH4A = 1, |
| SH_FEATURE_BCR3_AND_BCR4 = 2, |
| }; |
| |
| typedef struct memory_content { |
| uint32_t address; |
| uint32_t value; |
| struct memory_content *next; |
| } memory_content; |
| |
| typedef struct CPUArchState { |
| uint32_t flags; /* general execution flags */ |
| uint32_t gregs[24]; /* general registers */ |
| float32 fregs[32]; /* floating point registers */ |
| uint32_t sr; /* status register (with T split out) */ |
| uint32_t sr_m; /* M bit of status register */ |
| uint32_t sr_q; /* Q bit of status register */ |
| uint32_t sr_t; /* T bit of status register */ |
| uint32_t ssr; /* saved status register */ |
| uint32_t spc; /* saved program counter */ |
| uint32_t gbr; /* global base register */ |
| uint32_t vbr; /* vector base register */ |
| uint32_t sgr; /* saved global register 15 */ |
| uint32_t dbr; /* debug base register */ |
| uint32_t pc; /* program counter */ |
| uint32_t delayed_pc; /* target of delayed branch */ |
| uint32_t delayed_cond; /* condition of delayed branch */ |
| uint32_t mach; /* multiply and accumulate high */ |
| uint32_t macl; /* multiply and accumulate low */ |
| uint32_t pr; /* procedure register */ |
| uint32_t fpscr; /* floating point status/control register */ |
| uint32_t fpul; /* floating point communication register */ |
| |
| /* float point status register */ |
| float_status fp_status; |
| |
| /* Those belong to the specific unit (SH7750) but are handled here */ |
| uint32_t mmucr; /* MMU control register */ |
| uint32_t pteh; /* page table entry high register */ |
| uint32_t ptel; /* page table entry low register */ |
| uint32_t ptea; /* page table entry assistance register */ |
| uint32_t ttb; /* translation table base register */ |
| uint32_t tea; /* TLB exception address register */ |
| uint32_t tra; /* TRAPA exception register */ |
| uint32_t expevt; /* exception event register */ |
| uint32_t intevt; /* interrupt event register */ |
| |
| tlb_t itlb[ITLB_SIZE]; /* instruction translation table */ |
| tlb_t utlb[UTLB_SIZE]; /* unified translation table */ |
| |
| /* LDST = LOCK_ADDR != -1. */ |
| uint32_t lock_addr; |
| uint32_t lock_value; |
| |
| /* Fields up to this point are cleared by a CPU reset */ |
| struct {} end_reset_fields; |
| |
| /* Fields from here on are preserved over CPU reset. */ |
| int id; /* CPU model */ |
| |
| /* The features that we should emulate. See sh_features above. */ |
| uint32_t features; |
| |
| void *intc_handle; |
| int in_sleep; /* SR_BL ignored during sleep */ |
| memory_content *movcal_backup; |
| memory_content **movcal_backup_tail; |
| } CPUSH4State; |
| |
| /** |
| * SuperHCPU: |
| * @env: #CPUSH4State |
| * |
| * A SuperH CPU. |
| */ |
| struct ArchCPU { |
| CPUState parent_obj; |
| |
| CPUSH4State env; |
| }; |
| |
| /** |
| * SuperHCPUClass: |
| * @parent_realize: The parent class' realize handler. |
| * @parent_phases: The parent class' reset phase handlers. |
| * @pvr: Processor Version Register |
| * @prr: Processor Revision Register |
| * @cvr: Cache Version Register |
| * |
| * A SuperH CPU model. |
| */ |
| struct SuperHCPUClass { |
| CPUClass parent_class; |
| |
| DeviceRealize parent_realize; |
| ResettablePhases parent_phases; |
| |
| uint32_t pvr; |
| uint32_t prr; |
| uint32_t cvr; |
| }; |
| |
| void superh_cpu_dump_state(CPUState *cpu, FILE *f, int flags); |
| int superh_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); |
| int superh_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); |
| G_NORETURN void superh_cpu_do_unaligned_access(CPUState *cpu, vaddr addr, |
| MMUAccessType access_type, int mmu_idx, |
| uintptr_t retaddr); |
| |
| void sh4_translate_init(void); |
| |
| #if !defined(CONFIG_USER_ONLY) |
| hwaddr superh_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); |
| bool superh_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
| MMUAccessType access_type, int mmu_idx, |
| bool probe, uintptr_t retaddr); |
| void superh_cpu_do_interrupt(CPUState *cpu); |
| bool superh_cpu_exec_interrupt(CPUState *cpu, int int_req); |
| void cpu_sh4_invalidate_tlb(CPUSH4State *s); |
| uint32_t cpu_sh4_read_mmaped_itlb_addr(CPUSH4State *s, |
| hwaddr addr); |
| void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State *s, hwaddr addr, |
| uint32_t mem_value); |
| uint32_t cpu_sh4_read_mmaped_itlb_data(CPUSH4State *s, |
| hwaddr addr); |
| void cpu_sh4_write_mmaped_itlb_data(CPUSH4State *s, hwaddr addr, |
| uint32_t mem_value); |
| uint32_t cpu_sh4_read_mmaped_utlb_addr(CPUSH4State *s, |
| hwaddr addr); |
| void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, hwaddr addr, |
| uint32_t mem_value); |
| uint32_t cpu_sh4_read_mmaped_utlb_data(CPUSH4State *s, |
| hwaddr addr); |
| void cpu_sh4_write_mmaped_utlb_data(CPUSH4State *s, hwaddr addr, |
| uint32_t mem_value); |
| #endif |
| |
| int cpu_sh4_is_cached(CPUSH4State * env, target_ulong addr); |
| |
| void cpu_load_tlb(CPUSH4State * env); |
| |
| #define CPU_RESOLVING_TYPE TYPE_SUPERH_CPU |
| |
| /* MMU modes definitions */ |
| #define MMU_USER_IDX 1 |
| static inline int cpu_mmu_index (CPUSH4State *env, bool ifetch) |
| { |
| /* The instruction in a RTE delay slot is fetched in privileged |
| mode, but executed in user mode. */ |
| if (ifetch && (env->flags & TB_FLAG_DELAY_SLOT_RTE)) { |
| return 0; |
| } else { |
| return (env->sr & (1u << SR_MD)) == 0 ? 1 : 0; |
| } |
| } |
| |
| #include "exec/cpu-all.h" |
| |
| /* MMU control register */ |
| #define MMUCR 0x1F000010 |
| #define MMUCR_AT (1<<0) |
| #define MMUCR_TI (1<<2) |
| #define MMUCR_SV (1<<8) |
| #define MMUCR_URC_BITS (6) |
| #define MMUCR_URC_OFFSET (10) |
| #define MMUCR_URC_SIZE (1 << MMUCR_URC_BITS) |
| #define MMUCR_URC_MASK (((MMUCR_URC_SIZE) - 1) << MMUCR_URC_OFFSET) |
| static inline int cpu_mmucr_urc (uint32_t mmucr) |
| { |
| return ((mmucr & MMUCR_URC_MASK) >> MMUCR_URC_OFFSET); |
| } |
| |
| /* PTEH : Page Translation Entry High register */ |
| #define PTEH_ASID_BITS (8) |
| #define PTEH_ASID_SIZE (1 << PTEH_ASID_BITS) |
| #define PTEH_ASID_MASK (PTEH_ASID_SIZE - 1) |
| #define cpu_pteh_asid(pteh) ((pteh) & PTEH_ASID_MASK) |
| #define PTEH_VPN_BITS (22) |
| #define PTEH_VPN_OFFSET (10) |
| #define PTEH_VPN_SIZE (1 << PTEH_VPN_BITS) |
| #define PTEH_VPN_MASK (((PTEH_VPN_SIZE) - 1) << PTEH_VPN_OFFSET) |
| static inline int cpu_pteh_vpn (uint32_t pteh) |
| { |
| return ((pteh & PTEH_VPN_MASK) >> PTEH_VPN_OFFSET); |
| } |
| |
| /* PTEL : Page Translation Entry Low register */ |
| #define PTEL_V (1 << 8) |
| #define cpu_ptel_v(ptel) (((ptel) & PTEL_V) >> 8) |
| #define PTEL_C (1 << 3) |
| #define cpu_ptel_c(ptel) (((ptel) & PTEL_C) >> 3) |
| #define PTEL_D (1 << 2) |
| #define cpu_ptel_d(ptel) (((ptel) & PTEL_D) >> 2) |
| #define PTEL_SH (1 << 1) |
| #define cpu_ptel_sh(ptel)(((ptel) & PTEL_SH) >> 1) |
| #define PTEL_WT (1 << 0) |
| #define cpu_ptel_wt(ptel) ((ptel) & PTEL_WT) |
| |
| #define PTEL_SZ_HIGH_OFFSET (7) |
| #define PTEL_SZ_HIGH (1 << PTEL_SZ_HIGH_OFFSET) |
| #define PTEL_SZ_LOW_OFFSET (4) |
| #define PTEL_SZ_LOW (1 << PTEL_SZ_LOW_OFFSET) |
| static inline int cpu_ptel_sz (uint32_t ptel) |
| { |
| int sz; |
| sz = (ptel & PTEL_SZ_HIGH) >> PTEL_SZ_HIGH_OFFSET; |
| sz <<= 1; |
| sz |= (ptel & PTEL_SZ_LOW) >> PTEL_SZ_LOW_OFFSET; |
| return sz; |
| } |
| |
| #define PTEL_PPN_BITS (19) |
| #define PTEL_PPN_OFFSET (10) |
| #define PTEL_PPN_SIZE (1 << PTEL_PPN_BITS) |
| #define PTEL_PPN_MASK (((PTEL_PPN_SIZE) - 1) << PTEL_PPN_OFFSET) |
| static inline int cpu_ptel_ppn (uint32_t ptel) |
| { |
| return ((ptel & PTEL_PPN_MASK) >> PTEL_PPN_OFFSET); |
| } |
| |
| #define PTEL_PR_BITS (2) |
| #define PTEL_PR_OFFSET (5) |
| #define PTEL_PR_SIZE (1 << PTEL_PR_BITS) |
| #define PTEL_PR_MASK (((PTEL_PR_SIZE) - 1) << PTEL_PR_OFFSET) |
| static inline int cpu_ptel_pr (uint32_t ptel) |
| { |
| return ((ptel & PTEL_PR_MASK) >> PTEL_PR_OFFSET); |
| } |
| |
| /* PTEA : Page Translation Entry Assistance register */ |
| #define PTEA_SA_BITS (3) |
| #define PTEA_SA_SIZE (1 << PTEA_SA_BITS) |
| #define PTEA_SA_MASK (PTEA_SA_SIZE - 1) |
| #define cpu_ptea_sa(ptea) ((ptea) & PTEA_SA_MASK) |
| #define PTEA_TC (1 << 3) |
| #define cpu_ptea_tc(ptea) (((ptea) & PTEA_TC) >> 3) |
| |
| static inline target_ulong cpu_read_sr(CPUSH4State *env) |
| { |
| return env->sr | (env->sr_m << SR_M) | |
| (env->sr_q << SR_Q) | |
| (env->sr_t << SR_T); |
| } |
| |
| static inline void cpu_write_sr(CPUSH4State *env, target_ulong sr) |
| { |
| env->sr_m = (sr >> SR_M) & 1; |
| env->sr_q = (sr >> SR_Q) & 1; |
| env->sr_t = (sr >> SR_T) & 1; |
| env->sr = sr & ~((1u << SR_M) | (1u << SR_Q) | (1u << SR_T)); |
| } |
| |
| static inline void cpu_get_tb_cpu_state(CPUSH4State *env, vaddr *pc, |
| uint64_t *cs_base, uint32_t *flags) |
| { |
| *pc = env->pc; |
| /* For a gUSA region, notice the end of the region. */ |
| *cs_base = env->flags & TB_FLAG_GUSA_MASK ? env->gregs[0] : 0; |
| *flags = env->flags |
| | (env->fpscr & TB_FLAG_FPSCR_MASK) |
| | (env->sr & TB_FLAG_SR_MASK) |
| | (env->movcal_backup ? TB_FLAG_PENDING_MOVCA : 0); /* Bit 3 */ |
| #ifdef CONFIG_USER_ONLY |
| *flags |= TB_FLAG_UNALIGN * !env_cpu(env)->prctl_unalign_sigbus; |
| #endif |
| } |
| |
| #endif /* SH4_CPU_H */ |
