| /* |
| * MicroBlaze virtual CPU header |
| * |
| * Copyright (c) 2009 Edgar E. Iglesias |
| * |
| * 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 |
| * 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 CPU_MICROBLAZE_H |
| #define CPU_MICROBLAZE_H |
| |
| #include "config.h" |
| #include "qemu-common.h" |
| |
| #define TARGET_LONG_BITS 32 |
| |
| #define CPUArchState struct CPUMBState |
| |
| #include "exec/cpu-defs.h" |
| #include "fpu/softfloat.h" |
| struct CPUMBState; |
| typedef struct CPUMBState CPUMBState; |
| #if !defined(CONFIG_USER_ONLY) |
| #include "mmu.h" |
| #endif |
| |
| #define TARGET_HAS_ICE 1 |
| |
| #define ELF_MACHINE EM_MICROBLAZE |
| |
| #define EXCP_NMI 1 |
| #define EXCP_MMU 2 |
| #define EXCP_IRQ 3 |
| #define EXCP_BREAK 4 |
| #define EXCP_HW_BREAK 5 |
| #define EXCP_HW_EXCP 6 |
| |
| /* MicroBlaze-specific interrupt pending bits. */ |
| #define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3 |
| |
| /* Register aliases. R0 - R15 */ |
| #define R_SP 1 |
| #define SR_PC 0 |
| #define SR_MSR 1 |
| #define SR_EAR 3 |
| #define SR_ESR 5 |
| #define SR_FSR 7 |
| #define SR_BTR 0xb |
| #define SR_EDR 0xd |
| |
| /* MSR flags. */ |
| #define MSR_BE (1<<0) /* 0x001 */ |
| #define MSR_IE (1<<1) /* 0x002 */ |
| #define MSR_C (1<<2) /* 0x004 */ |
| #define MSR_BIP (1<<3) /* 0x008 */ |
| #define MSR_FSL (1<<4) /* 0x010 */ |
| #define MSR_ICE (1<<5) /* 0x020 */ |
| #define MSR_DZ (1<<6) /* 0x040 */ |
| #define MSR_DCE (1<<7) /* 0x080 */ |
| #define MSR_EE (1<<8) /* 0x100 */ |
| #define MSR_EIP (1<<9) /* 0x200 */ |
| #define MSR_PVR (1<<10) /* 0x400 */ |
| #define MSR_CC (1<<31) |
| |
| /* Machine State Register (MSR) Fields */ |
| #define MSR_UM (1<<11) /* User Mode */ |
| #define MSR_UMS (1<<12) /* User Mode Save */ |
| #define MSR_VM (1<<13) /* Virtual Mode */ |
| #define MSR_VMS (1<<14) /* Virtual Mode Save */ |
| |
| #define MSR_KERNEL MSR_EE|MSR_VM |
| //#define MSR_USER MSR_KERNEL|MSR_UM|MSR_IE |
| #define MSR_KERNEL_VMS MSR_EE|MSR_VMS |
| //#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE |
| |
| /* Exception State Register (ESR) Fields */ |
| #define ESR_DIZ (1<<11) /* Zone Protection */ |
| #define ESR_S (1<<10) /* Store instruction */ |
| |
| #define ESR_ESS_FSL_OFFSET 5 |
| |
| #define ESR_EC_FSL 0 |
| #define ESR_EC_UNALIGNED_DATA 1 |
| #define ESR_EC_ILLEGAL_OP 2 |
| #define ESR_EC_INSN_BUS 3 |
| #define ESR_EC_DATA_BUS 4 |
| #define ESR_EC_DIVZERO 5 |
| #define ESR_EC_FPU 6 |
| #define ESR_EC_PRIVINSN 7 |
| #define ESR_EC_STACKPROT 7 /* Same as PRIVINSN. */ |
| #define ESR_EC_DATA_STORAGE 8 |
| #define ESR_EC_INSN_STORAGE 9 |
| #define ESR_EC_DATA_TLB 10 |
| #define ESR_EC_INSN_TLB 11 |
| #define ESR_EC_MASK 31 |
| |
| /* Floating Point Status Register (FSR) Bits */ |
| #define FSR_IO (1<<4) /* Invalid operation */ |
| #define FSR_DZ (1<<3) /* Divide-by-zero */ |
| #define FSR_OF (1<<2) /* Overflow */ |
| #define FSR_UF (1<<1) /* Underflow */ |
| #define FSR_DO (1<<0) /* Denormalized operand error */ |
| |
| /* Version reg. */ |
| /* Basic PVR mask */ |
| #define PVR0_PVR_FULL_MASK 0x80000000 |
| #define PVR0_USE_BARREL_MASK 0x40000000 |
| #define PVR0_USE_DIV_MASK 0x20000000 |
| #define PVR0_USE_HW_MUL_MASK 0x10000000 |
| #define PVR0_USE_FPU_MASK 0x08000000 |
| #define PVR0_USE_EXC_MASK 0x04000000 |
| #define PVR0_USE_ICACHE_MASK 0x02000000 |
| #define PVR0_USE_DCACHE_MASK 0x01000000 |
| #define PVR0_USE_MMU 0x00800000 /* new */ |
| #define PVR0_USE_BTC 0x00400000 |
| #define PVR0_ENDI 0x00200000 |
| #define PVR0_FAULT 0x00100000 |
| #define PVR0_VERSION_MASK 0x0000FF00 |
| #define PVR0_USER1_MASK 0x000000FF |
| |
| /* User 2 PVR mask */ |
| #define PVR1_USER2_MASK 0xFFFFFFFF |
| |
| /* Configuration PVR masks */ |
| #define PVR2_D_OPB_MASK 0x80000000 |
| #define PVR2_D_LMB_MASK 0x40000000 |
| #define PVR2_I_OPB_MASK 0x20000000 |
| #define PVR2_I_LMB_MASK 0x10000000 |
| #define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000 |
| #define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000 |
| #define PVR2_D_PLB_MASK 0x02000000 /* new */ |
| #define PVR2_I_PLB_MASK 0x01000000 /* new */ |
| #define PVR2_INTERCONNECT 0x00800000 /* new */ |
| #define PVR2_USE_EXTEND_FSL 0x00080000 /* new */ |
| #define PVR2_USE_FSL_EXC 0x00040000 /* new */ |
| #define PVR2_USE_MSR_INSTR 0x00020000 |
| #define PVR2_USE_PCMP_INSTR 0x00010000 |
| #define PVR2_AREA_OPTIMISED 0x00008000 |
| #define PVR2_USE_BARREL_MASK 0x00004000 |
| #define PVR2_USE_DIV_MASK 0x00002000 |
| #define PVR2_USE_HW_MUL_MASK 0x00001000 |
| #define PVR2_USE_FPU_MASK 0x00000800 |
| #define PVR2_USE_MUL64_MASK 0x00000400 |
| #define PVR2_USE_FPU2_MASK 0x00000200 /* new */ |
| #define PVR2_USE_IPLBEXC 0x00000100 |
| #define PVR2_USE_DPLBEXC 0x00000080 |
| #define PVR2_OPCODE_0x0_ILL_MASK 0x00000040 |
| #define PVR2_UNALIGNED_EXC_MASK 0x00000020 |
| #define PVR2_ILL_OPCODE_EXC_MASK 0x00000010 |
| #define PVR2_IOPB_BUS_EXC_MASK 0x00000008 |
| #define PVR2_DOPB_BUS_EXC_MASK 0x00000004 |
| #define PVR2_DIV_ZERO_EXC_MASK 0x00000002 |
| #define PVR2_FPU_EXC_MASK 0x00000001 |
| |
| /* Debug and exception PVR masks */ |
| #define PVR3_DEBUG_ENABLED_MASK 0x80000000 |
| #define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000 |
| #define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000 |
| #define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000 |
| #define PVR3_FSL_LINKS_MASK 0x00000380 |
| |
| /* ICache config PVR masks */ |
| #define PVR4_USE_ICACHE_MASK 0x80000000 |
| #define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000 |
| #define PVR4_ICACHE_USE_FSL_MASK 0x02000000 |
| #define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000 |
| #define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000 |
| #define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000 |
| |
| /* DCache config PVR masks */ |
| #define PVR5_USE_DCACHE_MASK 0x80000000 |
| #define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000 |
| #define PVR5_DCACHE_USE_FSL_MASK 0x02000000 |
| #define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000 |
| #define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000 |
| #define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000 |
| #define PVR5_DCACHE_WRITEBACK_MASK 0x00004000 |
| |
| /* ICache base address PVR mask */ |
| #define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF |
| |
| /* ICache high address PVR mask */ |
| #define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF |
| |
| /* DCache base address PVR mask */ |
| #define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF |
| |
| /* DCache high address PVR mask */ |
| #define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF |
| |
| /* Target family PVR mask */ |
| #define PVR10_TARGET_FAMILY_MASK 0xFF000000 |
| |
| /* MMU descrtiption */ |
| #define PVR11_USE_MMU 0xC0000000 |
| #define PVR11_MMU_ITLB_SIZE 0x38000000 |
| #define PVR11_MMU_DTLB_SIZE 0x07000000 |
| #define PVR11_MMU_TLB_ACCESS 0x00C00000 |
| #define PVR11_MMU_ZONES 0x003E0000 |
| /* MSR Reset value PVR mask */ |
| #define PVR11_MSR_RESET_VALUE_MASK 0x000007FF |
| |
| |
| |
| /* CPU flags. */ |
| |
| /* Condition codes. */ |
| #define CC_GE 5 |
| #define CC_GT 4 |
| #define CC_LE 3 |
| #define CC_LT 2 |
| #define CC_NE 1 |
| #define CC_EQ 0 |
| |
| #define NB_MMU_MODES 3 |
| |
| #define STREAM_EXCEPTION (1 << 0) |
| #define STREAM_ATOMIC (1 << 1) |
| #define STREAM_TEST (1 << 2) |
| #define STREAM_CONTROL (1 << 3) |
| #define STREAM_NONBLOCK (1 << 4) |
| |
| struct CPUMBState { |
| uint32_t debug; |
| uint32_t btaken; |
| uint32_t btarget; |
| uint32_t bimm; |
| |
| uint32_t imm; |
| uint32_t regs[33]; |
| uint32_t sregs[24]; |
| float_status fp_status; |
| /* Stack protectors. Yes, it's a hw feature. */ |
| uint32_t slr, shr; |
| |
| /* lwx/swx reserved address */ |
| #define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */ |
| uint32_t res_addr; |
| |
| /* Internal flags. */ |
| #define IMM_FLAG 4 |
| #define MSR_EE_FLAG (1 << 8) |
| #define DRTI_FLAG (1 << 16) |
| #define DRTE_FLAG (1 << 17) |
| #define DRTB_FLAG (1 << 18) |
| #define D_FLAG (1 << 19) /* Bit in ESR. */ |
| /* TB dependent CPUMBState. */ |
| #define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG) |
| uint32_t iflags; |
| |
| struct { |
| uint32_t regs[16]; |
| } pvr; |
| |
| #if !defined(CONFIG_USER_ONLY) |
| /* Unified MMU. */ |
| struct microblaze_mmu mmu; |
| #endif |
| |
| CPU_COMMON |
| }; |
| |
| #include "cpu-qom.h" |
| |
| MicroBlazeCPU *cpu_mb_init(const char *cpu_model); |
| int cpu_mb_exec(CPUMBState *s); |
| void cpu_mb_close(CPUMBState *s); |
| void do_interrupt(CPUMBState *env); |
| /* you can call this signal handler from your SIGBUS and SIGSEGV |
| signal handlers to inform the virtual CPU of exceptions. non zero |
| is returned if the signal was handled by the virtual CPU. */ |
| int cpu_mb_signal_handler(int host_signum, void *pinfo, |
| void *puc); |
| |
| enum { |
| CC_OP_DYNAMIC, /* Use env->cc_op */ |
| CC_OP_FLAGS, |
| CC_OP_CMP, |
| }; |
| |
| /* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */ |
| #define TARGET_PAGE_BITS 12 |
| #define MMAP_SHIFT TARGET_PAGE_BITS |
| |
| #define TARGET_PHYS_ADDR_SPACE_BITS 32 |
| #define TARGET_VIRT_ADDR_SPACE_BITS 32 |
| |
| static inline CPUMBState *cpu_init(const char *cpu_model) |
| { |
| MicroBlazeCPU *cpu = cpu_mb_init(cpu_model); |
| if (cpu == NULL) { |
| return NULL; |
| } |
| return &cpu->env; |
| } |
| |
| #define cpu_exec cpu_mb_exec |
| #define cpu_gen_code cpu_mb_gen_code |
| #define cpu_signal_handler cpu_mb_signal_handler |
| |
| #define CPU_SAVE_VERSION 1 |
| |
| /* MMU modes definitions */ |
| #define MMU_MODE0_SUFFIX _nommu |
| #define MMU_MODE1_SUFFIX _kernel |
| #define MMU_MODE2_SUFFIX _user |
| #define MMU_NOMMU_IDX 0 |
| #define MMU_KERNEL_IDX 1 |
| #define MMU_USER_IDX 2 |
| /* See NB_MMU_MODES further up the file. */ |
| |
| static inline int cpu_mmu_index (CPUMBState *env) |
| { |
| /* Are we in nommu mode?. */ |
| if (!(env->sregs[SR_MSR] & MSR_VM)) |
| return MMU_NOMMU_IDX; |
| |
| if (env->sregs[SR_MSR] & MSR_UM) |
| return MMU_USER_IDX; |
| return MMU_KERNEL_IDX; |
| } |
| |
| int cpu_mb_handle_mmu_fault(CPUMBState *env, target_ulong address, int rw, |
| int mmu_idx); |
| #define cpu_handle_mmu_fault cpu_mb_handle_mmu_fault |
| |
| #if defined(CONFIG_USER_ONLY) |
| static inline void cpu_clone_regs(CPUMBState *env, target_ulong newsp) |
| { |
| if (newsp) |
| env->regs[R_SP] = newsp; |
| env->regs[3] = 0; |
| } |
| #endif |
| |
| static inline void cpu_set_tls(CPUMBState *env, target_ulong newtls) |
| { |
| env->regs[21] = newtls; |
| } |
| |
| static inline int cpu_interrupts_enabled(CPUMBState *env) |
| { |
| return env->sregs[SR_MSR] & MSR_IE; |
| } |
| |
| #include "exec/cpu-all.h" |
| |
| static inline target_ulong cpu_get_pc(CPUMBState *env) |
| { |
| return env->sregs[SR_PC]; |
| } |
| |
| static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc, |
| target_ulong *cs_base, int *flags) |
| { |
| *pc = env->sregs[SR_PC]; |
| *cs_base = 0; |
| *flags = (env->iflags & IFLAGS_TB_MASK) | |
| (env->sregs[SR_MSR] & (MSR_UM | MSR_VM | MSR_EE)); |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| void cpu_unassigned_access(CPUMBState *env1, hwaddr addr, |
| int is_write, int is_exec, int is_asi, int size); |
| #endif |
| |
| static inline bool cpu_has_work(CPUState *cpu) |
| { |
| CPUMBState *env = &MICROBLAZE_CPU(cpu)->env; |
| |
| return env->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI); |
| } |
| |
| #include "exec/exec-all.h" |
| |
| static inline void cpu_pc_from_tb(CPUMBState *env, TranslationBlock *tb) |
| { |
| env->sregs[SR_PC] = tb->pc; |
| } |
| |
| #endif |
