| /* |
| * 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)); |
