target/rx/cpu.h

   1 /*
   2  *  RX emulation definition
   3  *
   4  *  Copyright (c) 2019 Yoshinori Sato
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2 or later, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef RX_CPU_H
  20 #define RX_CPU_H
  21
  22 #include "qemu/bitops.h"
  23 #include "qemu-common.h"
  24 #include "hw/registerfields.h"
  25 #include "cpu-qom.h"
  26
  27 #include "exec/cpu-defs.h"
  28
  29 /* PSW define */
  30 REG32(PSW, 0)
  31 FIELD(PSW, C, 0, 1)
  32 FIELD(PSW, Z, 1, 1)
  33 FIELD(PSW, S, 2, 1)
  34 FIELD(PSW, O, 3, 1)
  35 FIELD(PSW, I, 16, 1)
  36 FIELD(PSW, U, 17, 1)
  37 FIELD(PSW, PM, 20, 1)
  38 FIELD(PSW, IPL, 24, 4)
  39
  40 /* FPSW define */
  41 REG32(FPSW, 0)
  42 FIELD(FPSW, RM, 0, 2)
  43 FIELD(FPSW, CV, 2, 1)
  44 FIELD(FPSW, CO, 3, 1)
  45 FIELD(FPSW, CZ, 4, 1)
  46 FIELD(FPSW, CU, 5, 1)
  47 FIELD(FPSW, CX, 6, 1)
  48 FIELD(FPSW, CE, 7, 1)
  49 FIELD(FPSW, CAUSE, 2, 6)
  50 FIELD(FPSW, DN, 8, 1)
  51 FIELD(FPSW, EV, 10, 1)
  52 FIELD(FPSW, EO, 11, 1)
  53 FIELD(FPSW, EZ, 12, 1)
  54 FIELD(FPSW, EU, 13, 1)
  55 FIELD(FPSW, EX, 14, 1)
  56 FIELD(FPSW, ENABLE, 10, 5)
  57 FIELD(FPSW, FV, 26, 1)
  58 FIELD(FPSW, FO, 27, 1)
  59 FIELD(FPSW, FZ, 28, 1)
  60 FIELD(FPSW, FU, 29, 1)
  61 FIELD(FPSW, FX, 30, 1)
  62 FIELD(FPSW, FLAGS, 26, 4)
  63 FIELD(FPSW, FS, 31, 1)
  64
  65 enum {
  66     NUM_REGS = 16,
  67 };
  68
  69 typedef struct CPURXState {
  70     /* CPU registers */
  71     uint32_t regs[NUM_REGS];    /* general registers */
  72     uint32_t psw_o;             /* O bit of status register */
  73     uint32_t psw_s;             /* S bit of status register */
  74     uint32_t psw_z;             /* Z bit of status register */
  75     uint32_t psw_c;             /* C bit of status register */
  76     uint32_t psw_u;
  77     uint32_t psw_i;
  78     uint32_t psw_pm;
  79     uint32_t psw_ipl;
  80     uint32_t bpsw;              /* backup status */
  81     uint32_t bpc;               /* backup pc */
  82     uint32_t isp;               /* global base register */
  83     uint32_t usp;               /* vector base register */
  84     uint32_t pc;                /* program counter */
  85     uint32_t intb;              /* interrupt vector */
  86     uint32_t fintv;
  87     uint32_t fpsw;
  88     uint64_t acc;
  89
  90     /* Fields up to this point are cleared by a CPU reset */
  91     struct {} end_reset_fields;
  92
  93     /* Internal use */
  94     uint32_t in_sleep;
  95     uint32_t req_irq;           /* Requested interrupt no (hard) */
  96     uint32_t req_ipl;           /* Requested interrupt level */
  97     uint32_t ack_irq;           /* execute irq */
  98     uint32_t ack_ipl;           /* execute ipl */
  99     float_status fp_status;
 100     qemu_irq ack;               /* Interrupt acknowledge */
 101 } CPURXState;
 102
 103 /*
 104  * RXCPU:
 105  * @env: #CPURXState
 106  *
 107  * A RX CPU
 108  */
 109 struct RXCPU {
 110     /*< private >*/
 111     CPUState parent_obj;
 112     /*< public >*/
 113
 114     CPUNegativeOffsetState neg;
 115     CPURXState env;
 116 };
 117
 118 typedef struct RXCPU RXCPU;
 119 typedef RXCPU ArchCPU;
 120
 121 #define ENV_OFFSET offsetof(RXCPU, env)
 122
 123 #define RX_CPU_TYPE_SUFFIX "-" TYPE_RX_CPU
 124 #define RX_CPU_TYPE_NAME(model) model RX_CPU_TYPE_SUFFIX
 125 #define CPU_RESOLVING_TYPE TYPE_RX_CPU
 126
 127 const char *rx_crname(uint8_t cr);
 128 void rx_cpu_do_interrupt(CPUState *cpu);
 129 bool rx_cpu_exec_interrupt(CPUState *cpu, int int_req);
 130 void rx_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
 131 int rx_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
 132 int rx_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 133 hwaddr rx_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 134
 135 void rx_translate_init(void);
 136 int cpu_rx_signal_handler(int host_signum, void *pinfo,
 137                            void *puc);
 138
 139 void rx_cpu_list(void);
 140 void rx_cpu_unpack_psw(CPURXState *env, uint32_t psw, int rte);
 141
 142 #define cpu_signal_handler cpu_rx_signal_handler
 143 #define cpu_list rx_cpu_list
 144
 145 #include "exec/cpu-all.h"
 146
 147 #define CPU_INTERRUPT_SOFT CPU_INTERRUPT_TGT_INT_0
 148 #define CPU_INTERRUPT_FIR  CPU_INTERRUPT_TGT_INT_1
 149
 150 #define RX_CPU_IRQ 0
 151 #define RX_CPU_FIR 1
 152
 153 static inline void cpu_get_tb_cpu_state(CPURXState *env, target_ulong *pc,
 154                                         target_ulong *cs_base, uint32_t *flags)
 155 {
 156     *pc = env->pc;
 157     *cs_base = 0;
 158     *flags = FIELD_DP32(0, PSW, PM, env->psw_pm);
 159 }
 160
 161 static inline int cpu_mmu_index(CPURXState *env, bool ifetch)
 162 {
 163     return 0;
 164 }
 165
 166 static inline uint32_t rx_cpu_pack_psw(CPURXState *env)
 167 {
 168     uint32_t psw = 0;
 169     psw = FIELD_DP32(psw, PSW, IPL, env->psw_ipl);
 170     psw = FIELD_DP32(psw, PSW, PM,  env->psw_pm);
 171     psw = FIELD_DP32(psw, PSW, U,   env->psw_u);
 172     psw = FIELD_DP32(psw, PSW, I,   env->psw_i);
 173     psw = FIELD_DP32(psw, PSW, O,   env->psw_o >> 31);
 174     psw = FIELD_DP32(psw, PSW, S,   env->psw_s >> 31);
 175     psw = FIELD_DP32(psw, PSW, Z,   env->psw_z == 0);
 176     psw = FIELD_DP32(psw, PSW, C,   env->psw_c);
 177     return psw;
 178 }
 179
 180 #endif /* RX_CPU_H */