| 1 | /* Copyright (C) 1995-2020 Free Software Foundation, Inc. |
| 2 | |
| 3 | This program is free software; you can redistribute it and/or modify |
| 4 | it under the terms of the GNU General Public License as published by |
| 5 | the Free Software Foundation; either version 3 of the License, or |
| 6 | (at your option) any later version. |
| 7 | |
| 8 | This program is distributed in the hope that it will be useful, |
| 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | GNU General Public License for more details. |
| 12 | |
| 13 | You should have received a copy of the GNU General Public License |
| 14 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 15 | |
| 16 | #include "config.h" |
| 17 | #include "ansidecl.h" |
| 18 | #include "gdb/callback.h" |
| 19 | #include "gdb/remote-sim.h" |
| 20 | #include <sim-config.h> |
| 21 | #include <stdint.h> |
| 22 | |
| 23 | #if HOST_BYTE_ORDER == BIG_ENDIAN |
| 24 | #define HOST_BIG_ENDIAN |
| 25 | #define EBT 0 |
| 26 | #else |
| 27 | #define HOST_LITTLE_ENDIAN |
| 28 | #define EBT 3 |
| 29 | #endif |
| 30 | |
| 31 | #define I_ACC_EXC 1 |
| 32 | |
| 33 | /* Maximum events in event queue */ |
| 34 | #define EVENT_MAX 256 |
| 35 | |
| 36 | /* Maximum # of floating point queue */ |
| 37 | #define FPUQN 1 |
| 38 | |
| 39 | /* Maximum # of breakpoints */ |
| 40 | #define BPT_MAX 256 |
| 41 | |
| 42 | struct histype { |
| 43 | unsigned addr; |
| 44 | unsigned time; |
| 45 | }; |
| 46 | |
| 47 | /* type definitions */ |
| 48 | |
| 49 | typedef short int int16; /* 16-bit signed int */ |
| 50 | typedef unsigned short int uint16; /* 16-bit unsigned int */ |
| 51 | typedef int int32; /* 32-bit signed int */ |
| 52 | typedef unsigned int uint32; /* 32-bit unsigned int */ |
| 53 | typedef float float32; /* 32-bit float */ |
| 54 | typedef double float64; /* 64-bit float */ |
| 55 | |
| 56 | typedef uint64_t uint64; /* 64-bit unsigned int */ |
| 57 | typedef int64_t int64; /* 64-bit signed int */ |
| 58 | |
| 59 | struct pstate { |
| 60 | |
| 61 | float64 fd[16]; /* FPU registers */ |
| 62 | #ifdef HOST_LITTLE_ENDIAN |
| 63 | float32 fs[32]; |
| 64 | float32 *fdp; |
| 65 | #else |
| 66 | float32 *fs; |
| 67 | #endif |
| 68 | int32 *fsi; |
| 69 | uint32 fsr; |
| 70 | int32 fpstate; |
| 71 | uint32 fpq[FPUQN * 2]; |
| 72 | uint32 fpqn; |
| 73 | uint32 ftime; |
| 74 | uint32 flrd; |
| 75 | uint32 frd; |
| 76 | uint32 frs1; |
| 77 | uint32 frs2; |
| 78 | uint32 fpu_pres; /* FPU present (0 = No, 1 = Yes) */ |
| 79 | |
| 80 | uint32 psr; /* IU registers */ |
| 81 | uint32 tbr; |
| 82 | uint32 wim; |
| 83 | uint32 g[8]; |
| 84 | uint32 r[128]; |
| 85 | uint32 y; |
| 86 | uint32 asr17; /* Single vector trapping */ |
| 87 | uint32 pc, npc; |
| 88 | |
| 89 | |
| 90 | uint32 trap; /* Current trap type */ |
| 91 | uint32 annul; /* Instruction annul */ |
| 92 | uint32 data; /* Loaded data */ |
| 93 | uint32 inst; /* Current instruction */ |
| 94 | uint32 asi; /* Current ASI */ |
| 95 | uint32 err_mode; /* IU error mode */ |
| 96 | uint32 breakpoint; |
| 97 | uint32 bptnum; |
| 98 | uint32 bphit; |
| 99 | uint32 bpts[BPT_MAX]; /* Breakpoints */ |
| 100 | |
| 101 | uint32 ltime; /* Load interlock time */ |
| 102 | uint32 hold; /* IU hold cycles in current inst */ |
| 103 | uint32 fhold; /* FPU hold cycles in current inst */ |
| 104 | uint32 icnt; /* Instruction cycles in curr inst */ |
| 105 | |
| 106 | uint32 histlen; /* Trace history management */ |
| 107 | uint32 histind; |
| 108 | struct histype *histbuf; |
| 109 | float32 freq; /* Simulated processor frequency */ |
| 110 | |
| 111 | |
| 112 | double tottime; |
| 113 | uint64 ninst; |
| 114 | uint64 fholdt; |
| 115 | uint64 holdt; |
| 116 | uint64 icntt; |
| 117 | uint64 finst; |
| 118 | uint64 simstart; |
| 119 | double starttime; |
| 120 | uint64 tlimit; /* Simulation time limit */ |
| 121 | uint64 pwdtime; /* Cycles in power-down mode */ |
| 122 | uint64 nstore; /* Number of load instructions */ |
| 123 | uint64 nload; /* Number of store instructions */ |
| 124 | uint64 nannul; /* Number of annuled instructions */ |
| 125 | uint64 nbranch; /* Number of branch instructions */ |
| 126 | uint32 ildreg; /* Destination of last load instruction */ |
| 127 | uint64 ildtime; /* Last time point for load dependency */ |
| 128 | |
| 129 | int rett_err; /* IU in jmpl/restore error state (Rev.0) */ |
| 130 | int jmpltime; |
| 131 | }; |
| 132 | |
| 133 | struct evcell { |
| 134 | void (*cfunc) (); |
| 135 | int32 arg; |
| 136 | uint64 time; |
| 137 | struct evcell *nxt; |
| 138 | }; |
| 139 | |
| 140 | struct estate { |
| 141 | struct evcell eq; |
| 142 | struct evcell *freeq; |
| 143 | uint64 simtime; |
| 144 | }; |
| 145 | |
| 146 | struct irqcell { |
| 147 | void (*callback) (); |
| 148 | int32 arg; |
| 149 | }; |
| 150 | |
| 151 | |
| 152 | #define OK 0 |
| 153 | #define TIME_OUT 1 |
| 154 | #define BPT_HIT 2 |
| 155 | #define ERROR 3 |
| 156 | #define CTRL_C 4 |
| 157 | |
| 158 | /* Prototypes */ |
| 159 | |
| 160 | /* erc32.c */ |
| 161 | extern void init_sim (void); |
| 162 | extern void reset (void); |
| 163 | extern void error_mode (uint32 pc); |
| 164 | extern void sim_halt (void); |
| 165 | extern void exit_sim (void); |
| 166 | extern void init_stdio (void); |
| 167 | extern void restore_stdio (void); |
| 168 | extern int memory_iread (uint32 addr, uint32 *data, int32 *ws); |
| 169 | extern int memory_read (int32 asi, uint32 addr, uint32 *data, |
| 170 | int32 sz, int32 *ws); |
| 171 | extern int memory_write (int32 asi, uint32 addr, uint32 *data, |
| 172 | int32 sz, int32 *ws); |
| 173 | extern int sis_memory_write (uint32 addr, |
| 174 | const unsigned char *data, uint32 length); |
| 175 | extern int sis_memory_read (uint32 addr, char *data, |
| 176 | uint32 length); |
| 177 | |
| 178 | /* func.c */ |
| 179 | extern struct pstate sregs; |
| 180 | extern void set_regi (struct pstate *sregs, int32 reg, |
| 181 | uint32 rval); |
| 182 | extern void get_regi (struct pstate *sregs, int32 reg, char *buf); |
| 183 | extern int exec_cmd (struct pstate *sregs, const char *cmd); |
| 184 | extern void reset_stat (struct pstate *sregs); |
| 185 | extern void show_stat (struct pstate *sregs); |
| 186 | extern void init_bpt (struct pstate *sregs); |
| 187 | extern void init_signals (void); |
| 188 | |
| 189 | struct disassemble_info; |
| 190 | extern void dis_mem (uint32 addr, uint32 len, |
| 191 | struct disassemble_info *info); |
| 192 | extern void event (void (*cfunc) (), int32 arg, uint64 delta); |
| 193 | extern void set_int (int32 level, void (*callback) (), int32 arg); |
| 194 | extern void advance_time (struct pstate *sregs); |
| 195 | extern uint32 now (void); |
| 196 | extern int wait_for_irq (void); |
| 197 | extern int check_bpt (struct pstate *sregs); |
| 198 | extern void reset_all (void); |
| 199 | extern void sys_reset (void); |
| 200 | extern void sys_halt (void); |
| 201 | extern int bfd_load (const char *fname); |
| 202 | extern double get_time (void); |
| 203 | |
| 204 | /* exec.c */ |
| 205 | extern int dispatch_instruction (struct pstate *sregs); |
| 206 | extern int execute_trap (struct pstate *sregs); |
| 207 | extern int check_interrupts (struct pstate *sregs); |
| 208 | extern void init_regs (struct pstate *sregs); |
| 209 | |
| 210 | /* interf.c */ |
| 211 | extern int run_sim (struct pstate *sregs, |
| 212 | uint64 icount, int dis); |
| 213 | |
| 214 | /* float.c */ |
| 215 | extern int get_accex (void); |
| 216 | extern void clear_accex (void); |
| 217 | extern void set_fsr (uint32 fsr); |
| 218 | |
| 219 | /* help.c */ |
| 220 | extern void usage (void); |
| 221 | extern void gen_help (void); |