/* * TILE-Gx virtual CPU header * * Copyright (c) 2015 Chen Gang * * 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 . */ #ifndef TILEGX_CPU_H #define TILEGX_CPU_H #include "qemu-common.h" #include "exec/cpu-defs.h" /* TILE-Gx common register alias */ #define TILEGX_R_RE 0 /* 0 register, for function/syscall return value */ #define TILEGX_R_ERR 1 /* 1 register, for syscall errno flag */ #define TILEGX_R_NR 10 /* 10 register, for syscall number */ #define TILEGX_R_BP 52 /* 52 register, optional frame pointer */ #define TILEGX_R_TP 53 /* TP register, thread local storage data */ #define TILEGX_R_SP 54 /* SP register, stack pointer */ #define TILEGX_R_LR 55 /* LR register, may save pc, but it is not pc */ #define TILEGX_R_COUNT 56 /* Only 56 registers are really useful */ #define TILEGX_R_SN 56 /* SN register, obsoleted, it likes zero register */ #define TILEGX_R_IDN0 57 /* IDN0 register, cause IDN_ACCESS exception */ #define TILEGX_R_IDN1 58 /* IDN1 register, cause IDN_ACCESS exception */ #define TILEGX_R_UDN0 59 /* UDN0 register, cause UDN_ACCESS exception */ #define TILEGX_R_UDN1 60 /* UDN1 register, cause UDN_ACCESS exception */ #define TILEGX_R_UDN2 61 /* UDN2 register, cause UDN_ACCESS exception */ #define TILEGX_R_UDN3 62 /* UDN3 register, cause UDN_ACCESS exception */ #define TILEGX_R_ZERO 63 /* Zero register, always zero */ #define TILEGX_R_NOREG 255 /* Invalid register value */ /* TILE-Gx special registers used by outside */ enum { TILEGX_SPR_CMPEXCH = 0, TILEGX_SPR_CRITICAL_SEC = 1, TILEGX_SPR_SIM_CONTROL = 2, TILEGX_SPR_EX_CONTEXT_0_0 = 3, TILEGX_SPR_EX_CONTEXT_0_1 = 4, TILEGX_SPR_COUNT }; /* Exception numbers */ typedef enum { TILEGX_EXCP_NONE = 0, TILEGX_EXCP_SYSCALL = 1, TILEGX_EXCP_SIGNAL = 2, TILEGX_EXCP_OPCODE_UNKNOWN = 0x101, TILEGX_EXCP_OPCODE_UNIMPLEMENTED = 0x102, TILEGX_EXCP_OPCODE_CMPEXCH = 0x103, TILEGX_EXCP_OPCODE_CMPEXCH4 = 0x104, TILEGX_EXCP_OPCODE_EXCH = 0x105, TILEGX_EXCP_OPCODE_EXCH4 = 0x106, TILEGX_EXCP_OPCODE_FETCHADD = 0x107, TILEGX_EXCP_OPCODE_FETCHADD4 = 0x108, TILEGX_EXCP_OPCODE_FETCHADDGEZ = 0x109, TILEGX_EXCP_OPCODE_FETCHADDGEZ4 = 0x10a, TILEGX_EXCP_OPCODE_FETCHAND = 0x10b, TILEGX_EXCP_OPCODE_FETCHAND4 = 0x10c, TILEGX_EXCP_OPCODE_FETCHOR = 0x10d, TILEGX_EXCP_OPCODE_FETCHOR4 = 0x10e, TILEGX_EXCP_REG_IDN_ACCESS = 0x181, TILEGX_EXCP_REG_UDN_ACCESS = 0x182, TILEGX_EXCP_UNALIGNMENT = 0x201, TILEGX_EXCP_DBUG_BREAK = 0x301 } TileExcp; typedef struct CPUTLGState { uint64_t regs[TILEGX_R_COUNT]; /* Common used registers by outside */ uint64_t spregs[TILEGX_SPR_COUNT]; /* Special used registers by outside */ uint64_t pc; /* Current pc */ #if defined(CONFIG_USER_ONLY) uint64_t excaddr; /* exception address */ uint64_t atomic_srca; /* Arguments to atomic "exceptions" */ uint64_t atomic_srcb; uint32_t atomic_dstr; uint32_t signo; /* Signal number */ uint32_t sigcode; /* Signal code */ #endif /* Fields up to this point are cleared by a CPU reset */ struct {} end_reset_fields; } CPUTLGState; #include "qom/cpu.h" #define TYPE_TILEGX_CPU "tilegx-cpu" #define TILEGX_CPU_CLASS(klass) \ OBJECT_CLASS_CHECK(TileGXCPUClass, (klass), TYPE_TILEGX_CPU) #define TILEGX_CPU(obj) \ OBJECT_CHECK(TileGXCPU, (obj), TYPE_TILEGX_CPU) #define TILEGX_CPU_GET_CLASS(obj) \ OBJECT_GET_CLASS(TileGXCPUClass, (obj), TYPE_TILEGX_CPU) /** * TileGXCPUClass: * @parent_realize: The parent class' realize handler. * @parent_reset: The parent class' reset handler. * * A Tile-Gx CPU model. */ typedef struct TileGXCPUClass { /*< private >*/ CPUClass parent_class; /*< public >*/ DeviceRealize parent_realize; void (*parent_reset)(CPUState *cpu); } TileGXCPUClass; /** * TileGXCPU: * @env: #CPUTLGState * * A Tile-GX CPU. */ typedef struct TileGXCPU { /*< private >*/ CPUState parent_obj; /*< public >*/ CPUNegativeOffsetState neg; CPUTLGState env; } TileGXCPU; /* TILE-Gx memory attributes */ #define MMU_USER_IDX 0 /* Current memory operation is in user mode */ typedef CPUTLGState CPUArchState; typedef TileGXCPU ArchCPU; #include "exec/cpu-all.h" void tilegx_tcg_init(void); int cpu_tilegx_signal_handler(int host_signum, void *pinfo, void *puc); #define CPU_RESOLVING_TYPE TYPE_TILEGX_CPU #define cpu_signal_handler cpu_tilegx_signal_handler static inline void cpu_get_tb_cpu_state(CPUTLGState *env, target_ulong *pc, target_ulong *cs_base, uint32_t *flags) { *pc = env->pc; *cs_base = 0; *flags = 0; } #endif