1 /* 2 * This file is part of SIS. 3 * 4 * ERC32SIM, SPARC instruction simulator. Copyright (C) 1995 Jiri Gaisler, 5 * European Space Agency 6 * 7 * This program is free software; you can redistribute it and/or modify it under 8 * the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program; if not, write to the Free Software Foundation, Inc., 675 19 * Mass Ave, Cambridge, MA 02139, USA. 20 * 21 */ 22 23 #include "ansidecl.h" 24 #include "gdb/callback.h" 25 #include "gdb/remote-sim.h" 26 27 #include "end.h" 28 29 #define I_ACC_EXC 1 30 31 /* Maximum events in event queue */ 32 #define EVENT_MAX 256 33 34 /* Maximum # of floating point queue */ 35 #define FPUQN 1 36 37 /* Maximum # of breakpoints */ 38 #define BPT_MAX 256 39 40 struct histype { 41 unsigned addr; 42 unsigned time; 43 }; 44 45 /* type definitions */ 46 47 typedef short int int16; /* 16-bit signed int */ 48 typedef unsigned short int uint16; /* 16-bit unsigned int */ 49 typedef int int32; /* 32-bit signed int */ 50 typedef unsigned int uint32; /* 32-bit unsigned int */ 51 typedef float float32; /* 32-bit float */ 52 typedef double float64; /* 64-bit float */ 53 54 /* FIXME: what about host compilers that don't support 64-bit ints? */ 55 typedef unsigned long long uint64; /* 64-bit unsigned int */ 56 typedef long long int64; /* 64-bit signed int */ 57 58 #define UINT64_MAX 18446744073709551615ULL 59 60 struct pstate { 61 62 float64 fd[16]; /* FPU registers */ 63 #ifdef HOST_LITTLE_ENDIAN_FLOAT 64 float32 fs[32]; 65 float32 *fdp; 66 #else 67 float32 *fs; 68 #endif 69 int32 *fsi; 70 uint32 fsr; 71 int32 fpstate; 72 uint32 fpq[FPUQN * 2]; 73 uint32 fpqn; 74 uint32 ftime; 75 uint32 flrd; 76 uint32 frd; 77 uint32 frs1; 78 uint32 frs2; 79 uint32 fpu_pres; /* FPU present (0 = No, 1 = Yes) */ 80 81 uint32 psr; /* IU registers */ 82 uint32 tbr; 83 uint32 wim; 84 uint32 g[8]; 85 uint32 r[128]; 86 uint32 y; 87 uint32 asr17; /* Single vector trapping */ 88 uint32 pc, npc; 89 90 91 uint32 trap; /* Current trap type */ 92 uint32 annul; /* Instruction annul */ 93 uint32 data; /* Loaded data */ 94 uint32 inst; /* Current instruction */ 95 uint32 asi; /* Current ASI */ 96 uint32 err_mode; /* IU error mode */ 97 uint32 breakpoint; 98 uint32 bptnum; 99 uint32 bphit; 100 uint32 bpts[BPT_MAX]; /* Breakpoints */ 101 102 uint32 ltime; /* Load interlock time */ 103 uint32 hold; /* IU hold cycles in current inst */ 104 uint32 fhold; /* FPU hold cycles in current inst */ 105 uint32 icnt; /* Instruction cycles in curr inst */ 106 107 uint32 histlen; /* Trace history management */ 108 uint32 histind; 109 struct histype *histbuf; 110 float32 freq; /* Simulated processor frequency */ 111 112 113 uint64 tottime; 114 uint64 ninst; 115 uint64 fholdt; 116 uint64 holdt; 117 uint64 icntt; 118 uint64 finst; 119 uint64 simstart; 120 uint64 starttime; 121 uint64 tlimit; /* Simulation time limit */ 122 uint64 pwdtime; /* Cycles in power-down mode */ 123 uint64 nstore; /* Number of load instructions */ 124 uint64 nload; /* Number of store instructions */ 125 uint64 nannul; /* Number of annuled instructions */ 126 uint64 nbranch; /* Number of branch instructions */ 127 uint32 ildreg; /* Destination of last load instruction */ 128 uint64 ildtime; /* Last time point for load dependency */ 129 130 int rett_err; /* IU in jmpl/restore error state (Rev.0) */ 131 int jmpltime; 132 }; 133 134 struct evcell { 135 void (*cfunc) (); 136 int32 arg; 137 uint64 time; 138 struct evcell *nxt; 139 }; 140 141 struct estate { 142 struct evcell eq; 143 struct evcell *freeq; 144 uint64 simtime; 145 }; 146 147 struct irqcell { 148 void (*callback) (); 149 int32 arg; 150 }; 151 152 153 #define OK 0 154 #define TIME_OUT 1 155 #define BPT_HIT 2 156 #define ERROR 3 157 #define CTRL_C 4 158 159 /* Prototypes */ 160 161 /* erc32.c */ 162 extern void init_sim PARAMS ((void)); 163 extern void reset PARAMS ((void)); 164 extern void error_mode PARAMS ((uint32 pc)); 165 extern void sim_halt PARAMS ((void)); 166 extern void exit_sim PARAMS ((void)); 167 extern void init_stdio PARAMS ((void)); 168 extern void restore_stdio PARAMS ((void)); 169 extern int memory_read PARAMS ((int32 asi, uint32 addr, uint32 *data, 170 int32 sz, int32 *ws)); 171 extern int memory_write PARAMS ((int32 asi, uint32 addr, uint32 *data, 172 int32 sz, int32 *ws)); 173 extern int sis_memory_write PARAMS ((uint32 addr, 174 const unsigned char *data, uint32 length)); 175 extern int sis_memory_read PARAMS ((uint32 addr, char *data, 176 uint32 length)); 177 178 /* func.c */ 179 extern void set_regi PARAMS ((struct pstate *sregs, int32 reg, 180 uint32 rval)); 181 extern void get_regi PARAMS ((struct pstate *sregs, int32 reg, char *buf)); 182 extern int exec_cmd PARAMS ((struct pstate *sregs, char *cmd)); 183 extern void reset_stat PARAMS ((struct pstate *sregs)); 184 extern void show_stat PARAMS ((struct pstate *sregs)); 185 extern void init_bpt PARAMS ((struct pstate *sregs)); 186 extern void init_signals PARAMS ((void)); 187 188 struct disassemble_info; 189 extern void dis_mem PARAMS ((uint32 addr, uint32 len, 190 struct disassemble_info *info)); 191 extern void event PARAMS ((void (*cfunc) (), int32 arg, uint64 delta)); 192 extern void set_int PARAMS ((int32 level, void (*callback) (), int32 arg)); 193 extern void advance_time PARAMS ((struct pstate *sregs)); 194 extern uint32 now PARAMS ((void)); 195 extern int wait_for_irq PARAMS ((void)); 196 extern int check_bpt PARAMS ((struct pstate *sregs)); 197 extern void reset_all PARAMS ((void)); 198 extern void sys_reset PARAMS ((void)); 199 extern void sys_halt PARAMS ((void)); 200 extern int bfd_load PARAMS ((char *fname)); 201 202 /* exec.c */ 203 extern int dispatch_instruction PARAMS ((struct pstate *sregs)); 204 extern int execute_trap PARAMS ((struct pstate *sregs)); 205 extern int check_interrupts PARAMS ((struct pstate *sregs)); 206 extern void init_regs PARAMS ((struct pstate *sregs)); 207 208 /* interf.c */ 209 extern int run_sim PARAMS ((struct pstate *sregs, 210 uint64 icount, int dis)); 211 212 /* float.c */ 213 extern int get_accex PARAMS ((void)); 214 extern void clear_accex PARAMS ((void)); 215 extern void set_fsr PARAMS ((uint32 fsr)); 216 217 /* help.c */ 218 extern void usage PARAMS ((void)); 219 extern void gen_help PARAMS ((void)); 220