tru64.hh

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/*
 * Copyright (c) 2001, 2002, 2003, 2004, 2005
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Nathan L. Binkert
 *          Ali G. Saidi
 */

#ifndef __TRU64_HH__
#define __TRU64_HH__
#include "config/full_system.hh"
#include "kern/operatingsystem.hh"

#if FULL_SYSTEM

class Tru64 {};

#else //!FULL_SYSTEM

#include <sys/types.h>
#include <sys/stat.h>
#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__)
#include <sys/param.h>
#include <sys/mount.h>
#else
#include <sys/statfs.h>
#endif

#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>	// for memset()
#include <unistd.h>

#include "cpu/base.hh"
#include "sim/core.hh"
#include "sim/syscall_emul.hh"

typedef struct stat global_stat;
typedef struct statfs global_statfs;
typedef struct dirent global_dirent;

class TranslatingPort;

///
/// This class encapsulates the types, structures, constants,
/// functions, and syscall-number mappings specific to the Alpha Tru64
/// syscall interface.
///
class Tru64 : public OperatingSystem
{

  public:

    //@{
    /// Basic Tru64 types.
    typedef uint64_t size_t;
    typedef uint64_t off_t;
    typedef uint16_t nlink_t;
    typedef int32_t  dev_t;
    typedef uint32_t uid_t;
    typedef uint32_t gid_t;
    typedef uint32_t time_t;
    typedef uint32_t mode_t;
    typedef uint32_t ino_t;
    typedef struct { int val[2]; } quad;
    typedef quad fsid_t;
    //@}


    /// For statfs().
    struct F64_statfs {
        int16_t   f_type;
        int16_t   f_flags;
        int32_t     f_retired1;
        int32_t     f_retired2;
        int32_t     f_retired3;
        int32_t     f_retired4;
        int32_t     f_retired5;
        int32_t     f_retired6;
        int32_t     f_retired7;
        fsid_t	f_fsid;
        int32_t     f_spare[9];
        char    f_retired8[90];
        char    f_retired9[90];
        uint64_t dummy[10]; // was union mount_info mount_info;
        uint64_t  f_flags2;
        int64_t    f_spare2[14];
        int64_t    f_fsize;
        int64_t    f_bsize;
        int64_t    f_blocks;
        int64_t    f_bfree;
        int64_t    f_bavail;
        int64_t    f_files;
        int64_t    f_ffree;
        char    f_mntonname[1024];
        char    f_mntfromname[1024];
    };

    /// For old Tru64 v4.x statfs()
    struct pre_F64_statfs {
        int16_t   f_type;
        int16_t   f_flags;
        int32_t     f_fsize;
        int32_t     f_bsize;
        int32_t     f_blocks;
        int32_t     f_bfree;
        int32_t     f_bavail;
        int32_t     f_files;
        int32_t     f_ffree;
        fsid_t  f_fsid;
        int32_t     f_spare[9];
        char    f_mntonname[90];
        char    f_mntfromname[90];
        uint64_t dummy[10]; // was union mount_info mount_info;
    };

    /// For getdirentries().
    struct dirent
    {
        ino_t d_ino;		//!< file number of entry
        uint16_t d_reclen;	//!< length of this record
        uint16_t d_namlen;	//!< length of string in d_name
        char d_name[256];	//!< dummy name length
    };


    /// Length of strings in struct utsname (plus 1 for null char).
    static const int _SYS_NMLN = 32;

    /// Interface struct for uname().
    struct utsname {
        char sysname[_SYS_NMLN];        //!< System name.
        char nodename[_SYS_NMLN];       //!< Node name.
        char release[_SYS_NMLN];        //!< OS release.
        char version[_SYS_NMLN];        //!< OS version.
        char machine[_SYS_NMLN];        //!< Machine type.
    };

    /// Limit struct for getrlimit/setrlimit.
    struct rlimit {
        uint64_t  rlim_cur;	//!< soft limit
        uint64_t  rlim_max;	//!< hard limit
    };


    /// For getsysinfo() GSI_CPU_INFO option.
    struct cpu_info {
        uint32_t     current_cpu;	//!< current_cpu
        uint32_t     cpus_in_box;	//!< cpus_in_box
        uint32_t     cpu_type;		//!< cpu_type
        uint32_t     ncpus;		//!< ncpus
        uint64_t     cpus_present;	//!< cpus_present
        uint64_t     cpus_running;	//!< cpus_running
        uint64_t     cpu_binding;	//!< cpu_binding
        uint64_t     cpu_ex_binding;	//!< cpu_ex_binding
        uint32_t     mhz;		//!< mhz
        uint32_t     unused[3];		//!< future expansion
    };

    /// For gettimeofday.
    struct timeval {
        uint32_t tv_sec;	//!< seconds
        uint32_t tv_usec;	//!< microseconds
    };

    /// For getrusage().
    struct rusage {
        struct timeval ru_utime;	//!< user time used
        struct timeval ru_stime;	//!< system time used
        uint64_t ru_maxrss;		//!< ru_maxrss
        uint64_t ru_ixrss;		//!< integral shared memory size
        uint64_t ru_idrss;		//!< integral unshared data "
        uint64_t ru_isrss;		//!< integral unshared stack "
        uint64_t ru_minflt;		//!< page reclaims - total vmfaults
        uint64_t ru_majflt;		//!< page faults
        uint64_t ru_nswap;		//!< swaps
        uint64_t ru_inblock;		//!< block input operations
        uint64_t ru_oublock;		//!< block output operations
        uint64_t ru_msgsnd;		//!< messages sent
        uint64_t ru_msgrcv;		//!< messages received
        uint64_t ru_nsignals;		//!< signals received
        uint64_t ru_nvcsw;		//!< voluntary context switches
        uint64_t ru_nivcsw;		//!< involuntary "
    };

    /// For sigreturn().
    struct sigcontext {
        int64_t sc_onstack;		//!< sigstack state to restore
        int64_t sc_mask;		//!< signal mask to restore
        int64_t sc_pc;			//!< pc at time of signal
        int64_t sc_ps;			//!< psl to retore
        int64_t sc_regs[32];		//!< processor regs 0 to 31
        int64_t sc_ownedfp;		//!< fp has been used
        int64_t sc_fpregs[32];		//!< fp regs 0 to 31
        uint64_t sc_fpcr;		//!< floating point control reg
        uint64_t sc_fp_control;		//!< software fpcr
        int64_t sc_reserved1;		//!< reserved for kernel
        uint32_t sc_kreserved1;		//!< reserved for kernel
        uint32_t sc_kreserved2;		//!< reserved for kernel
        size_t  sc_ssize;		//!< stack size
        caddr_t sc_sbase;		//!< stack start
        uint64_t sc_traparg_a0;		//!< a0 argument to trap on exc
        uint64_t sc_traparg_a1;		//!< a1 argument to trap on exc
        uint64_t sc_traparg_a2;		//!< a2 argument to trap on exc
        uint64_t sc_fp_trap_pc;		//!< imprecise pc
        uint64_t sc_fp_trigger_sum;	//!< Exception summary at trigg
        uint64_t sc_fp_trigger_inst; 	//!< Instruction at trigger pc
    };



    /// For table().
    struct tbl_sysinfo {
        uint64_t si_user;	//!< User time
        uint64_t si_nice;	//!< Nice time
        uint64_t si_sys;	//!< System time
        uint64_t si_idle;	//!< Idle time
        uint64_t si_hz;		//!< hz
        uint64_t si_phz;	//!< phz
        uint64_t si_boottime;	//!< Boot time in seconds
        uint64_t wait;		//!< Wait time
        uint32_t  si_max_procs;	//!< rpb->rpb_numprocs
        uint32_t  pad;		//!< padding
    };


    /// For stack_create.
    struct vm_stack {
        // was void *
        Addr	address;	//!< address hint
        size_t	rsize;		//!< red zone size
        size_t	ysize;		//!< yellow zone size
        size_t	gsize;		//!< green zone size
        size_t	swap;		//!< amount of swap to reserve
        size_t	incr;		//!< growth increment
        uint64_t	align;		//!< address alignment
        uint64_t	flags;		//!< MAP_FIXED etc.
        // was struct memalloc_attr *
        Addr	attr;		//!< allocation policy
        uint64_t reserved;	//!< reserved
    };

    /// Return values for nxm calls.
    enum {
        KERN_NOT_RECEIVER = 7,
        KERN_NOT_IN_SET = 12
    };

    /// For nxm_task_init.
    static const int NXM_TASK_INIT_VP = 2;	//!< initial thread is VP

    /// Task attribute structure.
    struct nxm_task_attr {
        int64_t nxm_callback;	//!< nxm_callback
        unsigned int nxm_version;	//!< nxm_version
        unsigned short nxm_uniq_offset;	//!< nxm_uniq_offset
        unsigned short flags;	//!< flags
        int nxm_quantum;	//!< nxm_quantum
        int pad1;		//!< pad1
        int64_t pad2;		//!< pad2
    };

    /// Signal set.
    typedef uint64_t   sigset_t;

    /// Thread state shared between user & kernel.
    struct ushared_state {
        sigset_t        sigmask;        //!< thread signal mask
        sigset_t        sig;            //!< thread pending mask
        // struct nxm_pth_state *
        Addr pth_id; //!< out-of-line state
        int             flags;          //!< shared flags
#define US_SIGSTACK     0x1             // thread called sigaltstack
#define US_ONSTACK      0x2             // thread is running on altstack
#define US_PROFILE      0x4             // thread called profil
#define US_SYSCALL      0x8             // thread in syscall
#define US_TRAP         0x10            // thread has trapped
#define US_YELLOW       0x20            // thread has mellowed yellow
#define US_YZONE        0x40            // thread has zoned out
#define US_FP_OWNED     0x80            // thread used floating point

        int             cancel_state;   //!< thread's cancelation state
#define US_CANCEL         0x1           // cancel pending
#define US_NOCANCEL       0X2           // synch cancel disabled
#define US_SYS_NOCANCEL   0x4           // syscall cancel disabled
#define US_ASYNC_NOCANCEL 0x8           // asynch cancel disabled
#define US_CANCEL_BITS  (US_NOCANCEL|US_SYS_NOCANCEL|US_ASYNC_NOCANCEL)
#define US_CANCEL_MASK  (US_CANCEL|US_NOCANCEL|US_SYS_NOCANCEL| \
                         US_ASYNC_NOCANCEL)

        // These are semi-shared. They are always visible to
        // the kernel but are never context-switched by the library.

        int             nxm_ssig;       //!< scheduler's synchronous signals
        int             reserved1;	//!< reserved1
        int64_t            nxm_active;     //!< scheduler active
        int64_t            reserved2;	//!< reserved2
    };

    struct nxm_sched_state {
        struct          ushared_state nxm_u;    //!< state own by user thread
        unsigned int    nxm_bits;               //!< scheduler state / slot
        int             nxm_quantum;            //!< quantum count-down value
        int             nxm_set_quantum;        //!< quantum reset value
        int             nxm_sysevent;           //!< syscall state
        // struct nxm_upcall *
        Addr	    nxm_uc_ret; //!< stack ptr of null thread
        // void *
        Addr nxm_tid;               //!< scheduler's thread id
        int64_t            nxm_va;                 //!< page fault address
        // struct nxm_pth_state *
        Addr nxm_pthid; //!< id of null thread
        uint64_t   nxm_bound_pcs_count;    //!< bound PCS thread count
        int64_t            pad[2];	   //!< pad
    };

    /// nxm_shared.
    struct nxm_shared {
        int64_t nxm_callback;              //!< address of upcall routine
        unsigned int nxm_version;       //!< version number
        unsigned short nxm_uniq_offset; //!< correction factor for TEB
        unsigned short pad1;		//!< pad1
        int64_t space[2];                  //!< future growth
        struct nxm_sched_state nxm_ss[1]; //!< array of shared areas
    };

    /// nxm_slot_state_t.
    enum nxm_slot_state_t {
        NXM_SLOT_AVAIL,
        NXM_SLOT_BOUND,
        NXM_SLOT_UNBOUND,
        NXM_SLOT_EMPTY
    };

    /// nxm_config_info
    struct nxm_config_info {
        int nxm_nslots_per_rad;         //!< max number of VP slots per RAD
        int nxm_nrads;                  //!< max number of RADs
        // nxm_slot_state_t *
        Addr nxm_slot_state; //!< per-VP slot state
        // struct nxm_shared *
        Addr nxm_rad[1];  //!< per-RAD shared areas
    };

    /// For nxm_thread_create.
    enum nxm_thread_type {
        NXM_TYPE_SCS	= 0,
        NXM_TYPE_VP		= 1,
        NXM_TYPE_MANAGER	= 2
    };

    /// Thread attributes.
    struct nxm_thread_attr {
        int version;	//!< version
        int type;	//!< type
        int cancel_flags;	//!< cancel_flags
        int priority;	//!< priority
        int policy;	//!< policy
        int signal_type;	//!< signal_type
        // void *
        Addr pthid;	//!< pthid
        sigset_t sigmask;	//!< sigmask
        /// Initial register values.
        struct {
            uint64_t pc;	//!< pc
            uint64_t sp;	//!< sp
            uint64_t a0;	//!< a0
        } registers;
        uint64_t pad2[2];	//!< pad2
    };

    /// Helper function to convert a host statfs buffer to a target statfs
    /// buffer.  Also copies the target buffer out to the simulated
    /// memory space.  Used by statfs() and fstatfs().
    template <class T>
    static void
    copyOutStatfsBuf(TranslatingPort *mem, Addr addr, global_statfs *host)
    {
        using namespace TheISA;