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/* Copyright (C) 1995-2024 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
#include "ansidecl.h"
#include "sim/callback.h"
#include "sim/sim.h"
#include <sim-config.h>
#include <stdint.h>
#include "dis-asm.h"
#if HOST_BYTE_ORDER == BIG_ENDIAN
#define HOST_BIG_ENDIAN
#define EBT 0
#else
#define HOST_LITTLE_ENDIAN
#define EBT 3
#endif
#define I_ACC_EXC 1
/* Maximum events in event queue */
#define MAX_EVENTS 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 float float32; /* 32-bit float */
typedef double float64; /* 64-bit float */
struct pstate {
float64 fd[16]; /* FPU registers */
#ifdef HOST_LITTLE_ENDIAN
float32 fs[32];
float32 *fdp;
#else
float32 *fs;
#endif
int32_t *fsi;
uint32_t fsr;
int32_t fpstate;
uint32_t fpq[FPUQN * 2];
uint32_t fpqn;
uint32_t ftime;
uint32_t flrd;
uint32_t frd;
uint32_t frs1;
uint32_t frs2;
uint32_t fpu_pres; /* FPU present (0 = No, 1 = Yes) */
uint32_t psr; /* IU registers */
uint32_t tbr;
uint32_t wim;
uint32_t g[8];
uint32_t r[128];
uint32_t y;
uint32_t asr17; /* Single vector trapping */
uint32_t pc, npc;
uint32_t trap; /* Current trap type */
uint32_t annul; /* Instruction annul */
uint32_t data; /* Loaded data */
uint32_t inst; /* Current instruction */
uint32_t asi; /* Current ASI */
uint32_t err_mode; /* IU error mode */
uint32_t breakpoint;
uint32_t bptnum;
uint32_t bphit;
uint32_t bpts[BPT_MAX]; /* Breakpoints */
uint32_t ltime; /* Load interlock time */
uint32_t hold; /* IU hold cycles in current inst */
uint32_t fhold; /* FPU hold cycles in current inst */
uint32_t icnt; /* Instruction cycles in curr inst */
uint32_t histlen; /* Trace history management */
uint32_t histind;
struct histype *histbuf;
float32 freq; /* Simulated processor frequency */
double tottime;
uint64_t ninst;
uint64_t fholdt;
uint64_t holdt;
uint64_t icntt;
uint64_t finst;
uint64_t simstart;
double starttime;
uint64_t tlimit; /* Simulation time limit */
uint64_t pwdtime; /* Cycles in power-down mode */
uint64_t nstore; /* Number of load instructions */
uint64_t nload; /* Number of store instructions */
uint64_t nannul; /* Number of annulled instructions */
uint64_t nbranch; /* Number of branch instructions */
uint32_t ildreg; /* Destination of last load instruction */
uint64_t 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_t);
int32_t arg;
uint64_t time;
struct evcell *nxt;
};
struct estate {
struct evcell eq;
struct evcell *freeq;
uint64_t simtime;
};
struct irqcell {
void (*callback) (int32_t);
int32_t 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 (void);
extern void reset (void);
extern void error_mode (uint32_t pc);
extern void sim_halt (void);
extern void exit_sim (void);
extern void init_stdio (void);
extern void restore_stdio (void);
extern int memory_iread (uint32_t addr, uint32_t *data, uint32_t *ws);
extern int memory_read (int32_t asi, uint32_t addr, void *data,
int32_t sz, int32_t *ws);
extern int memory_write (int32_t asi, uint32_t addr, uint32_t *data,
int32_t sz, int32_t *ws);
extern int sis_memory_write (uint32_t addr,
const void *data, uint32_t length);
extern int sis_memory_read (uint32_t addr, void *data,
uint32_t length);
extern void boot_init (void);
/* func.c */
extern struct pstate sregs;
extern void set_regi (struct pstate *sregs, int32_t reg,
uint32_t rval);
extern void get_regi (struct pstate *sregs, int32_t reg, unsigned char *buf);
extern int exec_cmd (struct pstate *sregs, const char *cmd);
extern void reset_stat (struct pstate *sregs);
extern void show_stat (struct pstate *sregs);
extern void init_bpt (struct pstate *sregs);
extern void init_signals (void);
struct disassemble_info;
extern void dis_mem (uint32_t addr, uint32_t len,
struct disassemble_info *info);
extern void event (void (*cfunc) (int32_t), int32_t arg, uint64_t delta);
extern void set_int (int32_t level, void (*callback) (int32_t), int32_t arg);
extern void advance_time (struct pstate *sregs);
extern uint32_t now (void);
extern int wait_for_irq (void);
extern int check_bpt (struct pstate *sregs);
extern void reset_all (void);
extern void sys_reset (void);
extern void sys_halt (void);
extern int bfd_load (const char *fname);
extern double get_time (void);
/* exec.c */
extern int dispatch_instruction (struct pstate *sregs);
extern int execute_trap (struct pstate *sregs);
extern int check_interrupts (struct pstate *sregs);
extern void init_regs (struct pstate *sregs);
/* interf.c */
extern int run_sim (struct pstate *sregs,
uint64_t icount, int dis);
/* float.c */
extern int get_accex (void);
extern void clear_accex (void);
extern void set_fsr (uint32_t fsr);
/* help.c */
extern void usage (void);
extern void gen_help (void);
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