/* * QEMU RISC-V Native Debug Support * * Copyright (c) 2022 Wind River Systems, Inc. * * Author: * Bin Meng * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2 or later, as published by the Free Software Foundation. * * This program is distributed in the hope 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 General Public License along with * this program. If not, see . */ #ifndef RISCV_DEBUG_H #define RISCV_DEBUG_H #include "exec/breakpoint.h" #define RV_MAX_TRIGGERS 2 /* register index of tdata CSRs */ enum { TDATA1 = 0, TDATA2, TDATA3, TDATA_NUM }; typedef enum { TRIGGER_TYPE_NO_EXIST = 0, /* trigger does not exist */ TRIGGER_TYPE_AD_MATCH = 2, /* address/data match trigger */ TRIGGER_TYPE_INST_CNT = 3, /* instruction count trigger */ TRIGGER_TYPE_INT = 4, /* interrupt trigger */ TRIGGER_TYPE_EXCP = 5, /* exception trigger */ TRIGGER_TYPE_AD_MATCH6 = 6, /* new address/data match trigger */ TRIGGER_TYPE_EXT_SRC = 7, /* external source trigger */ TRIGGER_TYPE_UNAVAIL = 15, /* trigger exists, but unavailable */ TRIGGER_TYPE_NUM } trigger_type_t; /* actions */ typedef enum { DBG_ACTION_NONE = -1, /* sentinel value */ DBG_ACTION_BP = 0, DBG_ACTION_DBG_MODE, DBG_ACTION_TRACE0, DBG_ACTION_TRACE1, DBG_ACTION_TRACE2, DBG_ACTION_TRACE3, DBG_ACTION_EXT_DBG0 = 8, DBG_ACTION_EXT_DBG1 } trigger_action_t; /* tdata1 field masks */ #define RV32_TYPE(t) ((uint32_t)(t) << 28) #define RV32_TYPE_MASK (0xf << 28) #define RV32_DMODE BIT(27) #define RV32_DATA_MASK 0x7ffffff #define RV64_TYPE(t) ((uint64_t)(t) << 60) #define RV64_TYPE_MASK (0xfULL << 60) #define RV64_DMODE BIT_ULL(59) #define RV64_DATA_MASK 0x7ffffffffffffff /* mcontrol field masks */ #define TYPE2_LOAD BIT(0) #define TYPE2_STORE BIT(1) #define TYPE2_EXEC BIT(2) #define TYPE2_U BIT(3) #define TYPE2_S BIT(4) #define TYPE2_M BIT(6) #define TYPE2_MATCH (0xf << 7) #define TYPE2_CHAIN BIT(11) #define TYPE2_ACTION (0xf << 12) #define TYPE2_SIZELO (0x3 << 16) #define TYPE2_TIMING BIT(18) #define TYPE2_SELECT BIT(19) #define TYPE2_HIT BIT(20) #define TYPE2_SIZEHI (0x3 << 21) /* RV64 only */ /* mcontrol6 field masks */ #define TYPE6_LOAD BIT(0) #define TYPE6_STORE BIT(1) #define TYPE6_EXEC BIT(2) #define TYPE6_U BIT(3) #define TYPE6_S BIT(4) #define TYPE6_M BIT(6) #define TYPE6_MATCH (0xf << 7) #define TYPE6_CHAIN BIT(11) #define TYPE6_ACTION (0xf << 12) #define TYPE6_SIZE (0xf << 16) #define TYPE6_TIMING BIT(20) #define TYPE6_SELECT BIT(21) #define TYPE6_HIT BIT(22) #define TYPE6_VU BIT(23) #define TYPE6_VS BIT(24) /* access size */ enum { SIZE_ANY = 0, SIZE_1B, SIZE_2B, SIZE_4B, SIZE_6B, SIZE_8B, SIZE_10B, SIZE_12B, SIZE_14B, SIZE_16B, SIZE_NUM = 16 }; /* itrigger filed masks */ #define ITRIGGER_ACTION 0x3f #define ITRIGGER_U BIT(6) #define ITRIGGER_S BIT(7) #define ITRIGGER_PENDING BIT(8) #define ITRIGGER_M BIT(9) #define ITRIGGER_COUNT (0x3fff << 10) #define ITRIGGER_HIT BIT(24) #define ITRIGGER_VU BIT(25) #define ITRIGGER_VS BIT(26) #define MHSELECT_IGNORE 0 #define MHSELECT_MCONTEXT 4 bool tdata_available(CPURISCVState *env, int tdata_index); target_ulong tselect_csr_read(CPURISCVState *env); void tselect_csr_write(CPURISCVState *env, target_ulong val); target_ulong tdata_csr_read(CPURISCVState *env, int tdata_index); void tdata_csr_write(CPURISCVState *env, int tdata_index, target_ulong val); target_ulong tinfo_csr_read(CPURISCVState *env); void riscv_cpu_debug_excp_handler(CPUState *cs); bool riscv_cpu_debug_check_breakpoint(CPUState *cs); bool riscv_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp); void riscv_trigger_realize(CPURISCVState *env); void riscv_trigger_reset_hold(CPURISCVState *env); bool riscv_itrigger_enabled(CPURISCVState *env); void riscv_itrigger_update_priv(CPURISCVState *env); #endif /* RISCV_DEBUG_H */