/* * This file is part of SIS. * * ERC32SIM, SPARC instruction simulator. Copyright (C) 1995 Jiri Gaisler, * European Space Agency * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program 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 General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 675 * Mass Ave, Cambridge, MA 02139, USA. * */ #include "ansidecl.h" #include "gdb/callback.h" #include "gdb/remote-sim.h" #include "end.h" #define I_ACC_EXC 1 /* Maximum events in event queue */ #define EVENT_MAX 256 /* Maximum # of floating point queue */ #define FPUQN 1 /* Maximum # of breakpoints */ #define BPT_MAX 256 struct histype { unsigned addr; unsigned time; }; /* type definitions */ typedef short int int16; /* 16-bit signed int */ typedef unsigned short int uint16; /* 16-bit unsigned int */ typedef int int32; /* 32-bit signed int */ typedef unsigned int uint32; /* 32-bit unsigned int */ typedef float float32; /* 32-bit float */ typedef double float64; /* 64-bit float */ /* FIXME: what about host compilers that don't support 64-bit ints? */ typedef unsigned long long uint64; /* 64-bit unsigned int */ typedef long long int64; /* 64-bit signed int */ struct pstate { float64 fd[16]; /* FPU registers */ #ifdef HOST_LITTLE_ENDIAN_FLOAT float32 fs[32]; float32 *fdp; #else float32 *fs; #endif int32 *fsi; uint32 fsr; int32 fpstate; uint32 fpq[FPUQN * 2]; uint32 fpqn; uint32 ftime; uint32 flrd; uint32 frd; uint32 frs1; uint32 frs2; uint32 fpu_pres; /* FPU present (0 = No, 1 = Yes) */ uint32 psr; /* IU registers */ uint32 tbr; uint32 wim; uint32 g[8]; uint32 r[128]; uint32 y; uint32 asr17; /* Single vector trapping */ uint32 pc, npc; uint32 trap; /* Current trap type */ uint32 annul; /* Instruction annul */ uint32 data; /* Loaded data */ uint32 inst; /* Current instruction */ uint32 asi; /* Current ASI */ uint32 err_mode; /* IU error mode */ uint32 breakpoint; uint32 bptnum; uint32 bphit; uint32 bpts[BPT_MAX]; /* Breakpoints */ uint32 ltime; /* Load interlock time */ uint32 hold; /* IU hold cycles in current inst */ uint32 fhold; /* FPU hold cycles in current inst */ uint32 icnt; /* Instruction cycles in curr inst */ uint32 histlen; /* Trace history management */ uint32 histind; struct histype *histbuf; float32 freq; /* Simulated processor frequency */ uint32 tottime; uint32 ninst; uint32 fholdt; uint32 holdt; uint32 icntt; uint32 finst; uint32 simstart; uint32 starttime; uint32 tlimit; /* Simulation time limit */ uint32 pwdtime; /* Cycles in power-down mode */ uint32 nstore; /* Number of load instructions */ uint32 nload; /* Number of store instructions */ uint32 nannul; /* Number of annuled instructions */ uint32 nbranch; /* Number of branch instructions */ uint32 ildreg; /* Destination of last load instruction */ uint32 ildtime; /* Last time point for load dependency */ int rett_err; /* IU in jmpl/restore error state (Rev.0) */ int jmpltime; }; struct evcell { void (*cfunc) (); int32 arg; uint32 time; struct evcell *nxt; }; struct estate { struct evcell eq; struct evcell *freeq; uint32 simtime; }; struct irqcell { void (*callback) (); int32 arg; }; #define OK 0 #define TIME_OUT 1 #define BPT_HIT 2 #define ERROR 3 #define CTRL_C 4 /* Prototypes */ /* erc32.c */ extern void init_sim PARAMS ((void)); extern void reset PARAMS ((void)); extern void error_mode PARAMS ((uint32 pc)); extern void sim_halt PARAMS ((void)); extern void exit_sim PARAMS ((void)); extern void init_stdio PARAMS ((void)); extern void restore_stdio PARAMS ((void)); extern int memory_read PARAMS ((int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)); extern int memory_write PARAMS ((int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)); extern int sis_memory_write PARAMS ((uint32 addr, char *data, uint32 length)); extern int sis_memory_read PARAMS ((uint32 addr, char *data, uint32 length)); /* func.c */ extern void set_regi PARAMS ((struct pstate *sregs, int32 reg, uint32 rval)); extern void get_regi PARAMS ((struct pstate *sregs, int32 reg, char *buf)); extern int exec_cmd PARAMS ((struct pstate *sregs, char *cmd)); extern void reset_stat PARAMS ((struct pstate *sregs)); extern void show_stat PARAMS ((struct pstate *sregs)); extern void init_bpt PARAMS ((struct pstate *sregs)); extern void init_signals PARAMS ((void)); struct disassemble_info; extern void dis_mem PARAMS ((uint32 addr, uint32 len, struct disassemble_info *info)); extern void event PARAMS ((void (*cfunc) (), int32 arg, uint32 delta)); extern void set_int PARAMS ((int32 level, void (*callback) (), int32 arg)); extern void advance_time PARAMS ((struct pstate *sregs)); extern uint32 now PARAMS ((void)); extern int wait_for_irq PARAMS ((void)); extern int check_bpt PARAMS ((struct pstate *sregs)); extern void reset_all PARAMS ((void)); extern void sys_reset PARAMS ((void)); extern void sys_halt PARAMS ((void)); extern int bfd_load PARAMS ((char *fname)); /* exec.c */ extern int dispatch_instruction PARAMS ((struct pstate *sregs)); extern int execute_trap PARAMS ((struct pstate *sregs)); extern int check_interrupts PARAMS ((struct pstate *sregs)); extern void init_regs PARAMS ((struct pstate *sregs)); /* interf.c */ extern int run_sim PARAMS ((struct pstate *sregs, unsigned int icount, int dis)); /* float.c */ extern int get_accex PARAMS ((void)); extern void clear_accex PARAMS ((void)); extern void set_fsr PARAMS ((uint32 fsr)); /* help.c */ extern void usage PARAMS ((void)); extern void gen_help PARAMS ((void));