| /* 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 annuled 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); |
