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authorAli Saidi <saidi@eecs.umich.edu>2006-02-18 23:44:22 -0500
committerAli Saidi <saidi@eecs.umich.edu>2006-02-18 23:44:22 -0500
commit53d2c9398e8c1631ae3fd5469b187b006d317f88 (patch)
treea55a2a385aab16a2e6f42858fe5464067f6ad7fe /kern
parent7b42d61f13e16afb3b9191f7c7510ebf4c72fd08 (diff)
downloadgem5-53d2c9398e8c1631ae3fd5469b187b006d317f88.tar.xz
Move Linux/Tru64 architecture independent code into kern/*
leaving dependent code making way for solaris linux syscall emu. SConscript: Add two new files for syscall emulation Add getDesc() function arch/alpha/alpha_linux_process.cc: arch/alpha/alpha_tru64_process.cc: move architecture independent code into kern/linux/linux.(hh|cc) arch/alpha/alpha_linux_process.hh: arch/alpha/alpha_tru64_process.hh: Add getDesc function kern/linux/linux.hh: move generi linux syscall emulation code into kern/linux kern/tru64/tru64.hh: move generi tru64 syscall emulation code into kern/tru64 sim/process.cc: sim/process.hh: Push the function determination and calling stuff down to LiveProcess and out of the Linux/Tru64 classes respectively sim/syscall_emul.cc: sim/syscall_emul.hh: fnctl implementation was identical in tru64 and linux so moved to generic --HG-- extra : convert_revision : 103293dbe6fe2f7892de4929d17dc085def77026
Diffstat (limited to 'kern')
-rw-r--r--kern/linux/linux.hh307
-rw-r--r--kern/tru64/tru64.hh1291
2 files changed, 1597 insertions, 1 deletions
diff --git a/kern/linux/linux.hh b/kern/linux/linux.hh
index b083b5a31..0dbccf546 100644
--- a/kern/linux/linux.hh
+++ b/kern/linux/linux.hh
@@ -28,7 +28,314 @@
#ifndef __LINUX_HH__
#define __LINUX_HH__
+#include "config/full_system.hh"
+
+#if FULL_SYSTEM
class Linux {};
+#else //!FULL_SYSTEM
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h> // for host open() flags
+#include <string.h> // for memset()
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "sim/syscall_emul.hh"
+
+///
+/// This class encapsulates the types, structures, constants,
+/// functions, and syscall-number mappings specific to the Alpha Linux
+/// syscall interface.
+///
+class Linux {
+
+ public:
+
+ //@{
+ /// Basic Linux types.
+ typedef uint64_t size_t;
+ typedef uint64_t off_t;
+ typedef int64_t time_t;
+ typedef uint32_t uid_t;
+ typedef uint32_t gid_t;
+ //@}
+
+#if BSD_HOST
+ typedef struct stat hst_stat;
+ typedef struct stat hst_stat64;
+#else
+ typedef struct stat hst_stat ;
+ typedef struct stat64 hst_stat64;
+#endif
+
+
+ //@{
+ /// open(2) flag values.
+ static const int TGT_O_RDONLY = 00000000; //!< O_RDONLY
+ static const int TGT_O_WRONLY = 00000001; //!< O_WRONLY
+ static const int TGT_O_RDWR = 00000002; //!< O_RDWR
+ static const int TGT_O_NONBLOCK = 00000004; //!< O_NONBLOCK
+ static const int TGT_O_APPEND = 00000010; //!< O_APPEND
+ static const int TGT_O_CREAT = 00001000; //!< O_CREAT
+ static const int TGT_O_TRUNC = 00002000; //!< O_TRUNC
+ static const int TGT_O_EXCL = 00004000; //!< O_EXCL
+ static const int TGT_O_NOCTTY = 00010000; //!< O_NOCTTY
+ static const int TGT_O_SYNC = 00040000; //!< O_SYNC
+ static const int TGT_O_DRD = 00100000; //!< O_DRD
+ static const int TGT_O_DIRECTIO = 00200000; //!< O_DIRECTIO
+ static const int TGT_O_CACHE = 00400000; //!< O_CACHE
+ static const int TGT_O_DSYNC = 02000000; //!< O_DSYNC
+ static const int TGT_O_RSYNC = 04000000; //!< O_RSYNC
+ //@}
+
+ /// This table maps the target open() flags to the corresponding
+ /// host open() flags.
+ static OpenFlagTransTable openFlagTable[];
+
+ /// Number of entries in openFlagTable[].
+ static const int NUM_OPEN_FLAGS;
+
+ /// Stat buffer. Note that we can't call it 'stat' since that
+ /// gets #defined to something else on some systems.
+ struct tgt_stat {
+ uint32_t st_dev; //!< device
+ uint32_t st_ino; //!< inode
+ uint32_t st_mode; //!< mode
+ uint32_t st_nlink; //!< link count
+ uint32_t st_uid; //!< owner's user ID
+ uint32_t st_gid; //!< owner's group ID
+ uint32_t st_rdev; //!< device number
+ int32_t _pad1; //!< for alignment
+ int64_t st_size; //!< file size in bytes
+ uint64_t st_atimeX; //!< time of last access
+ uint64_t st_mtimeX; //!< time of last modification
+ uint64_t st_ctimeX; //!< time of last status change
+ uint32_t st_blksize; //!< optimal I/O block size
+ int32_t st_blocks; //!< number of blocks allocated
+ uint32_t st_flags; //!< flags
+ uint32_t st_gen; //!< unknown
+ };
+
+ // same for stat64
+ struct tgt_stat64 {
+ uint64_t st_dev;
+ uint64_t st_ino;
+ uint64_t st_rdev;
+ int64_t st_size;
+ uint64_t st_blocks;
+
+ uint32_t st_mode;
+ uint32_t st_uid;
+ uint32_t st_gid;
+ uint32_t st_blksize;
+ uint32_t st_nlink;
+ uint32_t __pad0;
+
+ uint64_t tgt_st_atime;
+ uint64_t st_atime_nsec;
+ uint64_t tgt_st_mtime;
+ uint64_t st_mtime_nsec;
+ uint64_t tgt_st_ctime;
+ uint64_t st_ctime_nsec;
+ int64_t ___unused[3];
+ };
+
+ /// Length of strings in struct utsname (plus 1 for null char).
+ static const int _SYS_NMLN = 65;
+
+ /// 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.
+ };
+
+
+ //@{
+ /// ioctl() command codes.
+ static const unsigned TIOCGETP = 0x40067408;
+ static const unsigned TIOCSETP = 0x80067409;
+ static const unsigned TIOCSETN = 0x8006740a;
+ static const unsigned TIOCSETC = 0x80067411;
+ static const unsigned TIOCGETC = 0x40067412;
+ static const unsigned FIONREAD = 0x4004667f;
+ static const unsigned TIOCISATTY = 0x2000745e;
+ static const unsigned TIOCGETS = 0x402c7413;
+ static const unsigned TIOCGETA = 0x40127417;
+ //@}
+
+ /// Resource enumeration for getrlimit().
+ enum rlimit_resources {
+ TGT_RLIMIT_CPU = 0,
+ TGT_RLIMIT_FSIZE = 1,
+ TGT_RLIMIT_DATA = 2,
+ TGT_RLIMIT_STACK = 3,
+ TGT_RLIMIT_CORE = 4,
+ TGT_RLIMIT_RSS = 5,
+ TGT_RLIMIT_NOFILE = 6,
+ TGT_RLIMIT_AS = 7,
+ TGT_RLIMIT_VMEM = 7,
+ TGT_RLIMIT_NPROC = 8,
+ TGT_RLIMIT_MEMLOCK = 9,
+ TGT_RLIMIT_LOCKS = 10
+ };
+
+ /// Limit struct for getrlimit/setrlimit.
+ struct rlimit {
+ uint64_t rlim_cur; //!< soft limit
+ uint64_t rlim_max; //!< hard limit
+ };
+
+
+ /// For mmap().
+ static const unsigned TGT_MAP_ANONYMOUS = 0x10;
+
+ /// For gettimeofday().
+ struct timeval {
+ int64_t tv_sec; //!< seconds
+ int64_t tv_usec; //!< microseconds
+ };
+
+ // For writev/readv
+ struct tgt_iovec {
+ uint64_t iov_base; // void *
+ uint64_t iov_len;
+ };
+
+ //@{
+ /// For getrusage().
+ static const int TGT_RUSAGE_SELF = 0;
+ static const int TGT_RUSAGE_CHILDREN = -1;
+ static const int TGT_RUSAGE_BOTH = -2;
+ //@}
+
+ /// For getrusage().
+ struct rusage {
+ struct timeval ru_utime; //!< user time used
+ struct timeval ru_stime; //!< system time used
+ int64_t ru_maxrss; //!< max rss
+ int64_t ru_ixrss; //!< integral shared memory size
+ int64_t ru_idrss; //!< integral unshared data "
+ int64_t ru_isrss; //!< integral unshared stack "
+ int64_t ru_minflt; //!< page reclaims - total vmfaults
+ int64_t ru_majflt; //!< page faults
+ int64_t ru_nswap; //!< swaps
+ int64_t ru_inblock; //!< block input operations
+ int64_t ru_oublock; //!< block output operations
+ int64_t ru_msgsnd; //!< messages sent
+ int64_t ru_msgrcv; //!< messages received
+ int64_t ru_nsignals; //!< signals received
+ int64_t ru_nvcsw; //!< voluntary context switches
+ int64_t ru_nivcsw; //!< involuntary "
+ };
+
+ /// Helper function to convert a host stat buffer to a target stat
+ /// buffer. Also copies the target buffer out to the simulated
+ /// memory space. Used by stat(), fstat(), and lstat().
+#if !BSD_HOST
+ static void
+ copyOutStatBuf(FunctionalMemory *mem, Addr addr, hst_stat *host)
+ {
+ TypedBufferArg<Linux::tgt_stat> tgt(addr);
+
+ tgt->st_dev = htog(host->st_dev);
+ tgt->st_ino = htog(host->st_ino);
+ tgt->st_mode = htog(host->st_mode);
+ tgt->st_nlink = htog(host->st_nlink);
+ tgt->st_uid = htog(host->st_uid);
+ tgt->st_gid = htog(host->st_gid);
+ tgt->st_rdev = htog(host->st_rdev);
+ tgt->st_size = htog(host->st_size);
+ tgt->st_atimeX = htog(host->st_atime);
+ tgt->st_mtimeX = htog(host->st_mtime);
+ tgt->st_ctimeX = htog(host->st_ctime);
+ tgt->st_blksize = htog(host->st_blksize);
+ tgt->st_blocks = htog(host->st_blocks);
+
+ tgt.copyOut(mem);
+ }
+#else
+ // Third version for bsd systems which no longer have any support for
+ // the old stat() call and stat() is actually a stat64()
+ static void
+ copyOutStatBuf(FunctionalMemory *mem, Addr addr, hst_stat64 *host)
+ {
+ TypedBufferArg<Linux::tgt_stat> tgt(addr);
+
+ tgt->st_dev = htog(host->st_dev);
+ tgt->st_ino = htog(host->st_ino);
+ tgt->st_mode = htog(host->st_mode);
+ tgt->st_nlink = htog(host->st_nlink);
+ tgt->st_uid = htog(host->st_uid);
+ tgt->st_gid = htog(host->st_gid);
+ tgt->st_rdev = htog(host->st_rdev);
+ tgt->st_size = htog(host->st_size);
+ tgt->st_atimeX = htog(host->st_atime);
+ tgt->st_mtimeX = htog(host->st_mtime);
+ tgt->st_ctimeX = htog(host->st_ctime);
+ tgt->st_blksize = htog(host->st_blksize);
+ tgt->st_blocks = htog(host->st_blocks);
+
+ tgt.copyOut(mem);
+ }
+#endif
+
+
+ // Same for stat64
+ static void
+ copyOutStat64Buf(FunctionalMemory *mem, int fd, Addr addr, hst_stat64 *host)
+ {
+ TypedBufferArg<Linux::tgt_stat64> tgt(addr);
+
+ // fd == 1 checks are because libc does some checks
+ // that the stdout is interactive vs. a file
+ // this makes it work on non-linux systems
+ if (fd == 1)
+ tgt->st_dev = htog((uint64_t)0xA);
+ else
+ tgt->st_dev = htog((uint64_t)host->st_dev);
+ // XXX What about STAT64_HAS_BROKEN_ST_INO ???
+ tgt->st_ino = htog((uint64_t)host->st_ino);
+ if (fd == 1)
+ tgt->st_rdev = htog((uint64_t)0x880d);
+ else
+ tgt->st_rdev = htog((uint64_t)host->st_rdev);
+ tgt->st_size = htog((int64_t)host->st_size);
+ tgt->st_blocks = htog((uint64_t)host->st_blocks);
+
+ if (fd == 1)
+ tgt->st_mode = htog((uint32_t)0x2190);
+ else
+ tgt->st_mode = htog((uint32_t)host->st_mode);
+ tgt->st_uid = htog((uint32_t)host->st_uid);
+ tgt->st_gid = htog((uint32_t)host->st_gid);
+ tgt->st_blksize = htog((uint32_t)host->st_blksize);
+ tgt->st_nlink = htog((uint32_t)host->st_nlink);
+ tgt->tgt_st_atime = htog((uint64_t)host->st_atime);
+ tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime);
+ tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime);
+#if defined(STAT_HAVE_NSEC)
+ tgt->st_atime_nsec = htog(host->st_atime_nsec);
+ tgt->st_mtime_nsec = htog(host->st_mtime_nsec);
+ tgt->st_ctime_nsec = htog(host->st_ctime_nsec);
+#else
+ tgt->st_atime_nsec = 0;
+ tgt->st_mtime_nsec = 0;
+ tgt->st_ctime_nsec = 0;
+#endif
+
+ tgt.copyOut(mem);
+ }
+
+}; // class Linux
+
+
+#endif // FULL_SYSTEM
+
#endif // __LINUX_HH__
diff --git a/kern/tru64/tru64.hh b/kern/tru64/tru64.hh
index 07c0d21a7..f3dabb0f8 100644
--- a/kern/tru64/tru64.hh
+++ b/kern/tru64/tru64.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003-2005 The Regents of The University of Michigan
+ * Copyright (c) 2001-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -28,7 +28,1296 @@
#ifndef __TRU64_HH__
#define __TRU64_HH__
+#include "config/full_system.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/root.hh"
+#include "sim/syscall_emul.hh"
+
+using namespace std;
+
+typedef struct stat global_stat;
+typedef struct statfs global_statfs;
+typedef struct dirent global_dirent;
+
+///
+/// This class encapsulates the types, structures, constants,
+/// functions, and syscall-number mappings specific to the Alpha Tru64
+/// syscall interface.
+///
+class Tru64 {
+
+ 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;
+ //@}
+
+ //@{
+ /// open(2) flag values.
+ static const int TGT_O_RDONLY = 00000000;
+ static const int TGT_O_WRONLY = 00000001;
+ static const int TGT_O_RDWR = 00000002;
+ static const int TGT_O_NONBLOCK = 00000004;
+ static const int TGT_O_APPEND = 00000010;
+ static const int TGT_O_CREAT = 00001000;
+ static const int TGT_O_TRUNC = 00002000;
+ static const int TGT_O_EXCL = 00004000;
+ static const int TGT_O_NOCTTY = 00010000;
+ static const int TGT_O_SYNC = 00040000;
+ static const int TGT_O_DRD = 00100000;
+ static const int TGT_O_DIRECTIO = 00200000;
+ static const int TGT_O_CACHE = 00400000;
+ static const int TGT_O_DSYNC = 02000000;
+ static const int TGT_O_RSYNC = 04000000;
+ //@}
+
+ /// This table maps the target open() flags to the corresponding
+ /// host open() flags.
+ static OpenFlagTransTable openFlagTable[];
+
+ /// Number of entries in openFlagTable[].
+ static const int NUM_OPEN_FLAGS;
+
+ /// Stat buffer. Note that Tru64 v5.0+ use a new "F64" stat
+ /// structure, and a new set of syscall numbers for stat calls.
+ /// On some hosts (notably Linux) define st_atime, st_mtime, and
+ /// st_ctime as macros, so we append an X to get around this.
+ struct F64_stat {
+ dev_t st_dev; //!< st_dev
+ int32_t st_retired1; //!< st_retired1
+ mode_t st_mode; //!< st_mode
+ nlink_t st_nlink; //!< st_nlink
+ uint16_t st_nlink_reserved; //!< st_nlink_reserved
+ uid_t st_uid; //!< st_uid
+ gid_t st_gid; //!< st_gid
+ dev_t st_rdev; //!< st_rdev
+ dev_t st_ldev; //!< st_ldev
+ off_t st_size; //!< st_size
+ time_t st_retired2; //!< st_retired2
+ int32_t st_uatime; //!< st_uatime
+ time_t st_retired3; //!< st_retired3
+ int32_t st_umtime; //!< st_umtime
+ time_t st_retired4; //!< st_retired4
+ int32_t st_uctime; //!< st_uctime
+ int32_t st_retired5; //!< st_retired5
+ int32_t st_retired6; //!< st_retired6
+ uint32_t st_flags; //!< st_flags
+ uint32_t st_gen; //!< st_gen
+ uint64_t st_spare[4]; //!< st_spare[4]
+ ino_t st_ino; //!< st_ino
+ int32_t st_ino_reserved; //!< st_ino_reserved
+ time_t st_atimeX; //!< st_atime
+ int32_t st_atime_reserved; //!< st_atime_reserved
+ time_t st_mtimeX; //!< st_mtime
+ int32_t st_mtime_reserved; //!< st_mtime_reserved
+ time_t st_ctimeX; //!< st_ctime
+ int32_t st_ctime_reserved; //!< st_ctime_reserved
+ uint64_t st_blksize; //!< st_blksize
+ uint64_t st_blocks; //!< st_blocks
+ };
+
+
+ /// Old Tru64 v4.x stat struct.
+ /// Tru64 maintains backwards compatibility with v4.x by
+ /// implementing another set of stat functions using the old
+ /// structure definition and binding them to the old syscall
+ /// numbers.
+ struct pre_F64_stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ off_t st_size;
+ time_t st_atimeX;
+ int32_t st_uatime;
+ time_t st_mtimeX;
+ int32_t st_umtime;
+ time_t st_ctimeX;
+ int32_t st_uctime;
+ uint32_t st_blksize;
+ int32_t st_blocks;
+ uint32_t st_flags;
+ uint32_t st_gen;
+ };
+
+ /// 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.
+ };
+
+ //@{
+ /// ioctl() command codes.
+ static const unsigned TIOCGETP = 0x40067408;
+ static const unsigned TIOCSETP = 0x80067409;
+ static const unsigned TIOCSETN = 0x8006740a;
+ static const unsigned TIOCSETC = 0x80067411;
+ static const unsigned TIOCGETC = 0x40067412;
+ static const unsigned FIONREAD = 0x4004667f;
+ static const unsigned TIOCISATTY = 0x2000745e;
+ // TIOCGETS not defined in tru64, so I made up a number
+ static const unsigned TIOCGETS = 0x40000000;
+ static const unsigned TIOCGETA = 0x402c7413;
+ //@}
+
+ /// Resource enumeration for getrlimit().
+ enum rlimit_resources {
+ TGT_RLIMIT_CPU = 0,
+ TGT_RLIMIT_FSIZE = 1,
+ TGT_RLIMIT_DATA = 2,
+ TGT_RLIMIT_STACK = 3,
+ TGT_RLIMIT_CORE = 4,
+ TGT_RLIMIT_RSS = 5,
+ TGT_RLIMIT_NOFILE = 6,
+ TGT_RLIMIT_AS = 7,
+ TGT_RLIMIT_VMEM = 7
+ };
+
+ /// Limit struct for getrlimit/setrlimit.
+ struct rlimit {
+ uint64_t rlim_cur; //!< soft limit
+ uint64_t rlim_max; //!< hard limit
+ };
+
+
+ /// For mmap().
+ static const unsigned TGT_MAP_ANONYMOUS = 0x10;
+
+
+ //@{
+ /// For getsysinfo().
+ static const unsigned GSI_PLATFORM_NAME = 103; //!< platform name as string
+ static const unsigned GSI_CPU_INFO = 59; //!< CPU information
+ static const unsigned GSI_PROC_TYPE = 60; //!< get proc_type
+ static const unsigned GSI_MAX_CPU = 30; //!< max # cpu's on this machine
+ static const unsigned GSI_CPUS_IN_BOX = 55; //!< number of CPUs in system
+ static const unsigned GSI_PHYSMEM = 19; //!< Physical memory in KB
+ static const unsigned GSI_CLK_TCK = 42; //!< clock freq in Hz
+ //@}
+
+ /// 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 setsysinfo().
+ static const unsigned SSI_IEEE_FP_CONTROL = 14; //!< ieee_set_fp_control()
+ //@}
+
+ /// For gettimeofday.
+ struct timeval {
+ uint32_t tv_sec; //!< seconds
+ uint32_t tv_usec; //!< microseconds
+ };
+
+ //@{
+ /// For getrusage().
+ static const int TGT_RUSAGE_THREAD = 1;
+ static const int TGT_RUSAGE_SELF = 0;
+ static const int TGT_RUSAGE_CHILDREN = -1;
+ //@}
+
+ /// 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().
+ static const int TBL_SYSINFO = 12;
+
+ /// 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 stat buffer to a target stat
+ /// buffer. Also copies the target buffer out to the simulated
+ /// memory space. Used by stat(), fstat(), and lstat().
+ template <class T>
+ static void
+ copyOutStatBuf(FunctionalMemory *mem, Addr addr, global_stat *host)
+ {
+ TypedBufferArg<T> tgt(addr);
+
+ tgt->st_dev = htog(host->st_dev);
+ tgt->st_ino = htog(host->st_ino);
+ tgt->st_mode = htog(host->st_mode);
+ tgt->st_nlink = htog(host->st_nlink);
+ tgt->st_uid = htog(host->st_uid);
+ tgt->st_gid = htog(host->st_gid);
+ tgt->st_rdev = htog(host->st_rdev);
+ tgt->st_size = htog(host->st_size);
+ tgt->st_atimeX = htog(host->st_atime);
+ tgt->st_mtimeX = htog(host->st_mtime);
+ tgt->st_ctimeX = htog(host->st_ctime);
+ tgt->st_blksize = htog(host->st_blksize);
+ tgt->st_blocks = htog(host->st_blocks);
+
+ tgt.copyOut(mem);
+ }
+
+ /// 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(FunctionalMemory *mem, Addr addr, global_statfs *host)
+ {
+ TypedBufferArg<T> tgt(addr);
+
+#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__)
+ tgt->f_type = 0;
+#else
+ tgt->f_type = htog(host->f_type);
+#endif
+ tgt->f_bsize = htog(host->f_bsize);
+ tgt->f_blocks = htog(host->f_blocks);
+ tgt->f_bfree = htog(host->f_bfree);
+ tgt->f_bavail = htog(host->f_bavail);
+ tgt->f_files = htog(host->f_files);
+ tgt->f_ffree = htog(host->f_ffree);
+
+ // Is this as string normally?
+ memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid));
+
+ tgt.copyOut(mem);
+ }
+
+ class F64 {
+ public:
+ static void copyOutStatBuf(FunctionalMemory *mem, Addr addr,
+ global_stat *host)
+ {
+ Tru64::copyOutStatBuf<Tru64::F64_stat>(mem, addr, host);
+ }
+
+ static void copyOutStatfsBuf(FunctionalMemory *mem, Addr addr,
+ global_statfs *host)
+ {
+ Tru64::copyOutStatfsBuf<Tru64::F64_statfs>(mem, addr, host);
+ }
+ };
+
+ class PreF64 {
+ public:
+ static void copyOutStatBuf(FunctionalMemory *mem, Addr addr,
+ global_stat *host)
+ {
+ Tru64::copyOutStatBuf<Tru64::pre_F64_stat>(mem, addr, host);
+ }
+
+ static void copyOutStatfsBuf(FunctionalMemory *mem, Addr addr,
+ global_statfs *host)
+ {
+ Tru64::copyOutStatfsBuf<Tru64::pre_F64_statfs>(mem, addr, host);
+ }
+ };
+
+ /// Helper function to convert a host stat buffer to an old pre-F64
+ /// (4.x) target stat buffer. Also copies the target buffer out to
+ /// the simulated memory space. Used by pre_F64_stat(),
+ /// pre_F64_fstat(), and pre_F64_lstat().
+ static void
+ copyOutPreF64StatBuf(FunctionalMemory *mem, Addr addr, struct stat *host)
+ {
+ TypedBufferArg<Tru64::pre_F64_stat> tgt(addr);
+
+ tgt->st_dev = htog(host->st_dev);
+ tgt->st_ino = htog(host->st_ino);
+ tgt->st_mode = htog(host->st_mode);
+ tgt->st_nlink = htog(host->st_nlink);
+ tgt->st_uid = htog(host->st_uid);
+ tgt->st_gid = htog(host->st_gid);
+ tgt->st_rdev = htog(host->st_rdev);
+ tgt->st_size = htog(host->st_size);
+ tgt->st_atimeX = htog(host->st_atime);
+ tgt->st_mtimeX = htog(host->st_mtime);
+ tgt->st_ctimeX = htog(host->st_ctime);
+ tgt->st_blksize = htog(host->st_blksize);
+ tgt->st_blocks = htog(host->st_blocks);
+
+ tgt.copyOut(mem);
+ }
+
+
+ /// The target system's hostname.
+ static const char *hostname;
+
+
+ /// Target getdirentries() handler.
+ static SyscallReturn
+ getdirentriesFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+#ifdef __CYGWIN__
+ panic("getdirent not implemented on cygwin!");
+#else
+ int fd = process->sim_fd(xc->getSyscallArg(0));
+ Addr tgt_buf = xc->getSyscallArg(1);
+ int tgt_nbytes = xc->getSyscallArg(2);
+ Addr tgt_basep = xc->getSyscallArg(3);
+
+ char * const host_buf = new char[tgt_nbytes];
+
+ // just pass basep through uninterpreted.
+ TypedBufferArg<int64_t> basep(tgt_basep);
+ basep.copyIn(xc->mem);
+ long host_basep = (off_t)htog((int64_t)*basep);
+ int host_result = getdirentries(fd, host_buf, tgt_nbytes, &host_basep);
+
+ // check for error
+ if (host_result < 0) {
+ delete [] host_buf;
+ return -errno;
+ }
+
+ // no error: copy results back to target space
+ Addr tgt_buf_ptr = tgt_buf;
+ char *host_buf_ptr = host_buf;
+ char *host_buf_end = host_buf + host_result;
+ while (host_buf_ptr < host_buf_end) {
+ global_dirent *host_dp = (global_dirent *)host_buf_ptr;
+ int namelen = strlen(host_dp->d_name);
+
+ // Actual size includes padded string rounded up for alignment.
+ // Subtract 256 for dummy char array in Tru64::dirent definition.
+ // Add 1 to namelen for terminating null char.
+ int tgt_bufsize = sizeof(Tru64::dirent) - 256 + roundUp(namelen+1, 8);
+ TypedBufferArg<Tru64::dirent> tgt_dp(tgt_buf_ptr, tgt_bufsize);
+ tgt_dp->d_ino = host_dp->d_ino;
+ tgt_dp->d_reclen = tgt_bufsize;
+ tgt_dp->d_namlen = namelen;
+ strcpy(tgt_dp->d_name, host_dp->d_name);
+ tgt_dp.copyOut(xc->mem);
+
+ tgt_buf_ptr += tgt_bufsize;
+ host_buf_ptr += host_dp->d_reclen;
+ }
+
+ delete [] host_buf;
+
+ *basep = htog((int64_t)host_basep);
+ basep.copyOut(xc->mem);
+
+ return tgt_buf_ptr - tgt_buf;
+#endif
+ }
+
+ /// Target sigreturn() handler.
+ static SyscallReturn
+ sigreturnFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ RegFile *regs = &xc->regs;
+ TypedBufferArg<Tru64::sigcontext> sc(xc->getSyscallArg(0));
+
+ sc.copyIn(xc->mem);
+
+ // Restore state from sigcontext structure.
+ // Note that we'll advance PC <- NPC before the end of the cycle,
+ // so we need to restore the desired PC into NPC.
+ // The current regs->pc will get clobbered.
+ regs->npc = htog(sc->sc_pc);
+
+ for (int i = 0; i < 31; ++i) {
+ regs->intRegFile[i] = htog(sc->sc_regs[i]);
+ regs->floatRegFile.q[i] = htog(sc->sc_fpregs[i]);
+ }
+
+ regs->miscRegs.fpcr = htog(sc->sc_fpcr);
+
+ return 0;
+ }
+
+ /// Target table() handler.
+ static SyscallReturn
+ tableFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ int id = xc->getSyscallArg(0); // table ID
+ int index = xc->getSyscallArg(1); // index into table
+ // arg 2 is buffer pointer; type depends on table ID
+ int nel = xc->getSyscallArg(3); // number of elements
+ int lel = xc->getSyscallArg(4); // expected element size
+
+ switch (id) {
+ case Tru64::TBL_SYSINFO: {
+ if (index != 0 || nel != 1 || lel != sizeof(Tru64::tbl_sysinfo))
+ return -EINVAL;
+ TypedBufferArg<Tru64::tbl_sysinfo> elp(xc->getSyscallArg(2));
+
+ const int clk_hz = one_million;
+ elp->si_user = htog(curTick / (Clock::Frequency / clk_hz));
+ elp->si_nice = htog(0);
+ elp->si_sys = htog(0);
+ elp->si_idle = htog(0);
+ elp->wait = htog(0);
+ elp->si_hz = htog(clk_hz);
+ elp->si_phz = htog(clk_hz);
+ elp->si_boottime = htog(seconds_since_epoch); // seconds since epoch?
+ elp->si_max_procs = htog(process->numCpus());
+ elp.copyOut(xc->mem);
+ return 0;
+ }
+
+ default:
+ cerr << "table(): id " << id << " unknown." << endl;
+ return -EINVAL;
+ }
+ }
+
+ //
+ // Mach syscalls -- identified by negated syscall numbers
+ //
+
+ /// Create a stack region for a thread.
+ static SyscallReturn
+ stack_createFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ TypedBufferArg<Tru64::vm_stack> argp(xc->getSyscallArg(0));
+
+ argp.copyIn(xc->mem);
+
+ // if the user chose an address, just let them have it. Otherwise
+ // pick one for them.
+ if (htog(argp->address) == 0) {
+ argp->address = htog(process->next_thread_stack_base);
+ int stack_size = (htog(argp->rsize) + htog(argp->ysize) +
+ htog(argp->gsize));
+ process->next_thread_stack_base -= stack_size;
+ argp.copyOut(xc->mem);
+ }
+
+ return 0;
+ }
+
+ /// NXM library version stamp.
+ static
+ const int NXM_LIB_VERSION = 301003;
+
+ /// This call sets up the interface between the user and kernel
+ /// schedulers by creating a shared-memory region. The shared memory
+ /// region has several structs, some global, some per-RAD, some per-VP.
+ static SyscallReturn
+ nxm_task_initFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ TypedBufferArg<Tru64::nxm_task_attr> attrp(xc->getSyscallArg(0));
+ TypedBufferArg<Addr> configptr_ptr(xc->getSyscallArg(1));
+
+ attrp.copyIn(xc->mem);
+
+ if (gtoh(attrp->nxm_version) != NXM_LIB_VERSION) {
+ cerr << "nxm_task_init: thread library version mismatch! "
+ << "got " << attrp->nxm_version
+ << ", expected " << NXM_LIB_VERSION << endl;
+ abort();
+ }
+
+ if (gtoh(attrp->flags) != Tru64::NXM_TASK_INIT_VP) {
+ cerr << "nxm_task_init: bad flag value " << attrp->flags
+ << " (expected " << Tru64::NXM_TASK_INIT_VP << ")" << endl;
+ abort();
+ }
+
+ const Addr base_addr = 0x12000; // was 0x3f0000000LL;
+ Addr cur_addr = base_addr; // next addresses to use
+ // first comes the config_info struct
+ Addr config_addr = cur_addr;
+ cur_addr += sizeof(Tru64::nxm_config_info);
+ // next comes the per-cpu state vector
+ Addr slot_state_addr = cur_addr;
+ int slot_state_size =
+ process->numCpus() * sizeof(Tru64::nxm_slot_state_t);
+ cur_addr += slot_state_size;
+ // now the per-RAD state struct (we only support one RAD)
+ cur_addr = 0x14000; // bump up addr for alignment
+ Addr rad_state_addr = cur_addr;
+ int rad_state_size =
+ (sizeof(Tru64::nxm_shared)
+ + (process->numCpus()-1) * sizeof(Tru64::nxm_sched_state));
+ cur_addr += rad_state_size;
+
+ // now initialize a config_info struct and copy it out to user space
+ TypedBufferArg<Tru64::nxm_config_info> config(config_addr);
+
+ config->nxm_nslots_per_rad = htog(process->numCpus());
+ config->nxm_nrads = htog(1); // only one RAD in our system!
+ config->nxm_slot_state = htog(slot_state_addr);
+ config->nxm_rad[0] = htog(rad_state_addr);
+
+ config.copyOut(xc->mem);
+
+ // initialize the slot_state array and copy it out
+ TypedBufferArg<Tru64::nxm_slot_state_t> slot_state(slot_state_addr,
+ slot_state_size);
+ for (int i = 0; i < process->numCpus(); ++i) {
+ // CPU 0 is bound to the calling process; all others are available
+ // XXX this code should have an endian conversion, but I don't think
+ // it works anyway
+ slot_state[i] =
+ (i == 0) ? Tru64::NXM_SLOT_BOUND : Tru64::NXM_SLOT_AVAIL;
+ }
+
+ slot_state.copyOut(xc->mem);
+
+ // same for the per-RAD "shared" struct. Note that we need to
+ // allocate extra bytes for the per-VP array which is embedded at
+ // the end.
+ TypedBufferArg<Tru64::nxm_shared> rad_state(rad_state_addr,
+ rad_state_size);
+
+ rad_state->nxm_callback = attrp->nxm_callback;
+ rad_state->nxm_version = attrp->nxm_version;
+ rad_state->nxm_uniq_offset = attrp->nxm_uniq_offset;
+ for (int i = 0; i < process->numCpus(); ++i) {
+ Tru64::nxm_sched_state *ssp = &rad_state->nxm_ss[i];
+ ssp->nxm_u.sigmask = htog(0);
+ ssp->nxm_u.sig = htog(0);
+ ssp->nxm_u.flags = htog(0);
+ ssp->nxm_u.cancel_state = htog(0);
+ ssp->nxm_u.nxm_ssig = 0;
+ ssp->nxm_bits = htog(0);
+ ssp->nxm_quantum = attrp->nxm_quantum;
+ ssp->nxm_set_quantum = attrp->nxm_quantum;
+ ssp->nxm_sysevent = htog(0);
+
+ if (i == 0) {
+ uint64_t uniq = xc->regs.miscRegs.uniq;
+ ssp->nxm_u.pth_id = htog(uniq + gtoh(attrp->nxm_uniq_offset));
+ ssp->nxm_u.nxm_active = htog(uniq | 1);
+ }
+ else {
+ ssp->nxm_u.pth_id = htog(0);
+ ssp->nxm_u.nxm_active = htog(0);
+ }
+ }
+
+ rad_state.copyOut(xc->mem);
+
+ //
+ // copy pointer to shared config area out to user
+ //
+ *configptr_ptr = htog(config_addr);
+ configptr_ptr.copyOut(xc->mem);
+
+ // Register this as a valid address range with the process
+ process->nxm_start = base_addr;
+ process->nxm_end = cur_addr;
+
+ return 0;
+ }
+
+ /// Initialize execution context.
+ static void
+ init_exec_context(ExecContext *ec,
+ Tru64::nxm_thread_attr *attrp, uint64_t uniq_val)
+ {
+ memset(&ec->regs, 0, sizeof(ec->regs));
+
+ ec->regs.intRegFile[ArgumentReg0] = gtoh(attrp->registers.a0);
+ ec->regs.intRegFile[27/*t12*/] = gtoh(attrp->registers.pc);
+ ec->regs.intRegFile[StackPointerReg] = gtoh(attrp->registers.sp);
+ ec->regs.miscRegs.uniq = uniq_val;
+
+ ec->regs.pc = gtoh(attrp->registers.pc);
+ ec->regs.npc = gtoh(attrp->registers.pc) + sizeof(MachInst);
+
+ ec->activate();
+ }
+
+ /// Create thread.
+ static SyscallReturn
+ nxm_thread_createFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ TypedBufferArg<Tru64::nxm_thread_attr> attrp(xc->getSyscallArg(0));
+ TypedBufferArg<uint64_t> kidp(xc->getSyscallArg(1));
+ int thread_index = xc->getSyscallArg(2);
+
+ // get attribute args
+ attrp.copyIn(xc->mem);
+
+ if (gtoh(attrp->version) != NXM_LIB_VERSION) {
+ cerr << "nxm_thread_create: thread library version mismatch! "
+ << "got " << attrp->version
+ << ", expected " << NXM_LIB_VERSION << endl;
+ abort();
+ }
+
+ if (thread_index < 0 | thread_index > process->numCpus()) {
+ cerr << "nxm_thread_create: bad thread index " << thread_index
+ << endl;
+ abort();
+ }
+
+ // On a real machine, the per-RAD shared structure is in
+ // shared memory, so both the user and kernel can get at it.
+ // We don't have that luxury, so we just copy it in and then
+ // back out again.
+ int rad_state_size =
+ (sizeof(Tru64::nxm_shared) +
+ (process->numCpus()-1) * sizeof(Tru64::nxm_sched_state));
+
+ TypedBufferArg<Tru64::nxm_shared> rad_state(0x14000,
+ rad_state_size);
+ rad_state.copyIn(xc->mem);
+
+ uint64_t uniq_val = gtoh(attrp->pthid) - gtoh(rad_state->nxm_uniq_offset);
+
+ if (gtoh(attrp->type) == Tru64::NXM_TYPE_MANAGER) {
+ // DEC pthreads seems to always create one of these (in
+ // addition to N application threads), but we don't use it,
+ // so don't bother creating it.
+
+ // This is supposed to be a port number. Make something up.
+ *kidp = htog(99);
+ kidp.copyOut(xc->mem);
+
+ return 0;
+ } else if (gtoh(attrp->type) == Tru64::NXM_TYPE_VP) {
+ // A real "virtual processor" kernel thread. Need to fork
+ // this thread on another CPU.
+ Tru64::nxm_sched_state *ssp = &rad_state->nxm_ss[thread_index];
+
+ if (gtoh(ssp->nxm_u.nxm_active) != 0)
+ return (int) Tru64::KERN_NOT_RECEIVER;
+
+ ssp->nxm_u.pth_id = attrp->pthid;
+ ssp->nxm_u.nxm_active = htog(uniq_val | 1);
+
+ rad_state.copyOut(xc->mem);
+
+ Addr slot_state_addr = 0x12000 + sizeof(Tru64::nxm_config_info);
+ int slot_state_size =
+ process->numCpus() * sizeof(Tru64::nxm_slot_state_t);
+
+ TypedBufferArg<Tru64::nxm_slot_state_t>
+ slot_state(slot_state_addr,
+ slot_state_size);
+
+ slot_state.copyIn(xc->mem);
+
+ if (slot_state[thread_index] != Tru64::NXM_SLOT_AVAIL) {
+ cerr << "nxm_thread_createFunc: requested VP slot "
+ << thread_index << " not available!" << endl;
+ fatal("");
+ }
+
+ // XXX This should have an endian conversion but I think this code
+ // doesn't work anyway
+ slot_state[thread_index] = Tru64::NXM_SLOT_BOUND;
+
+ slot_state.copyOut(xc->mem);
+
+ // Find a free simulator execution context.
+ for (int i = 0; i < process->numCpus(); ++i) {
+ ExecContext *xc = process->execContexts[i];
+
+ if (xc->status() == ExecContext::Unallocated) {
+ // inactive context... grab it
+ init_exec_context(xc, attrp, uniq_val);
+
+ // This is supposed to be a port number, but we'll try
+ // and get away with just sticking the thread index
+ // here.
+ *kidp = htog(thread_index);
+ kidp.copyOut(xc->mem);
+
+ return 0;
+ }
+ }
+
+ // fell out of loop... no available inactive context
+ cerr << "nxm_thread_create: no idle contexts available." << endl;
+ abort();
+ } else {
+ cerr << "nxm_thread_create: can't handle thread type "
+ << attrp->type << endl;
+ abort();
+ }
+
+ return 0;
+ }
+
+ /// Thread idle call (like yield()).
+ static SyscallReturn
+ nxm_idleFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ return 0;
+ }
+
+ /// Block thread.
+ static SyscallReturn
+ nxm_thread_blockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ uint64_t tid = xc->getSyscallArg(0);
+ uint64_t secs = xc->getSyscallArg(1);
+ uint64_t flags = xc->getSyscallArg(2);
+ uint64_t action = xc->getSyscallArg(3);
+ uint64_t usecs = xc->getSyscallArg(4);
+
+ cout << xc->cpu->name() << ": nxm_thread_block " << tid << " " << secs
+ << " " << flags << " " << action << " " << usecs << endl;
+
+ return 0;
+ }
+
+ /// block.
+ static SyscallReturn
+ nxm_blockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr uaddr = xc->getSyscallArg(0);
+ uint64_t val = xc->getSyscallArg(1);
+ uint64_t secs = xc->getSyscallArg(2);
+ uint64_t usecs = xc->getSyscallArg(3);
+ uint64_t flags = xc->getSyscallArg(4);
+
+ BaseCPU *cpu = xc->cpu;
+
+ cout << cpu->name() << ": nxm_block "
+ << hex << uaddr << dec << " " << val
+ << " " << secs << " " << usecs
+ << " " << flags << endl;
+
+ return 0;
+ }
+
+ /// Unblock thread.
+ static SyscallReturn
+ nxm_unblockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr uaddr = xc->getSyscallArg(0);
+
+ cout << xc->cpu->name() << ": nxm_unblock "
+ << hex << uaddr << dec << endl;
+
+ return 0;
+ }
+
+ /// Switch thread priority.
+ static SyscallReturn
+ swtch_priFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ // Attempts to switch to another runnable thread (if there is
+ // one). Returns false if there are no other threads to run
+ // (i.e., the thread can reasonably spin-wait) or true if there
+ // are other threads.
+ //
+ // Since we assume at most one "kernel" thread per CPU, it's
+ // always safe to return false here.
+ return 0; //false;
+ }
+
+
+ /// Activate exec context waiting on a channel. Just activate one
+ /// by default.
+ static int
+ activate_waiting_context(Addr uaddr, Process *process,
+ bool activate_all = false)
+ {
+ int num_activated = 0;
+
+ list<Process::WaitRec>::iterator i = process->waitList.begin();
+ list<Process::WaitRec>::iterator end = process->waitList.end();
+
+ while (i != end && (num_activated == 0 || activate_all)) {
+ if (i->waitChan == uaddr) {
+ // found waiting process: make it active
+ ExecContext *newCtx = i->waitingContext;
+ assert(newCtx->status() == ExecContext::Suspended);
+ newCtx->activate();
+
+ // get rid of this record
+ i = process->waitList.erase(i);
+
+ ++num_activated;
+ } else {
+ ++i;
+ }
+ }
+
+ return num_activated;
+ }
+
+ /// M5 hacked-up lock acquire.
+ static void
+ m5_lock_mutex(Addr uaddr, Process *process, ExecContext *xc)
+ {
+ TypedBufferArg<uint64_t> lockp(uaddr);
+
+ lockp.copyIn(xc->mem);
+
+ if (gtoh(*lockp) == 0) {
+ // lock is free: grab it
+ *lockp = htog(1);
+ lockp.copyOut(xc->mem);
+ } else {
+ // lock is busy: disable until free
+ process->waitList.push_back(Process::WaitRec(uaddr, xc));
+ xc->suspend();
+ }
+ }
+
+ /// M5 unlock call.
+ static void
+ m5_unlock_mutex(Addr uaddr, Process *process, ExecContext *xc)
+ {
+ TypedBufferArg<uint64_t> lockp(uaddr);
+
+ lockp.copyIn(xc->mem);
+ assert(*lockp != 0);
+
+ // Check for a process waiting on the lock.
+ int num_waiting = activate_waiting_context(uaddr, process);
+
+ // clear lock field if no waiting context is taking over the lock
+ if (num_waiting == 0) {
+ *lockp = 0;
+ lockp.copyOut(xc->mem);
+ }
+ }
+
+ /// Lock acquire syscall handler.
+ static SyscallReturn
+ m5_mutex_lockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr uaddr = xc->getSyscallArg(0);
+
+ m5_lock_mutex(uaddr, process, xc);
+
+ // Return 0 since we will always return to the user with the lock
+ // acquired. We will just keep the context inactive until that is
+ // true.
+ return 0;
+ }
+
+ /// Try lock (non-blocking).
+ static SyscallReturn
+ m5_mutex_trylockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr uaddr = xc->getSyscallArg(0);
+ TypedBufferArg<uint64_t> lockp(uaddr);
+
+ lockp.copyIn(xc->mem);
+
+ if (gtoh(*lockp) == 0) {
+ // lock is free: grab it
+ *lockp = htog(1);
+ lockp.copyOut(xc->mem);
+ return 0;
+ } else {
+ return 1;
+ }
+ }
+
+ /// Unlock syscall handler.
+ static SyscallReturn
+ m5_mutex_unlockFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr uaddr = xc->getSyscallArg(0);
+
+ m5_unlock_mutex(uaddr, process, xc);
+
+ return 0;
+ }
+
+ /// Signal ocndition.
+ static SyscallReturn
+ m5_cond_signalFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr cond_addr = xc->getSyscallArg(0);
+
+ // Wake up one process waiting on the condition variable.
+ activate_waiting_context(cond_addr, process);
+
+ return 0;
+ }
+
+ /// Wake up all processes waiting on the condition variable.
+ static SyscallReturn
+ m5_cond_broadcastFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr cond_addr = xc->getSyscallArg(0);
+
+ activate_waiting_context(cond_addr, process, true);
+
+ return 0;
+ }
+
+ /// Wait on a condition.
+ static SyscallReturn
+ m5_cond_waitFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ Addr cond_addr = xc->getSyscallArg(0);
+ Addr lock_addr = xc->getSyscallArg(1);
+ TypedBufferArg<uint64_t> condp(cond_addr);
+ TypedBufferArg<uint64_t> lockp(lock_addr);
+
+ // user is supposed to acquire lock before entering
+ lockp.copyIn(xc->mem);
+ assert(gtoh(*lockp) != 0);
+
+ m5_unlock_mutex(lock_addr, process, xc);
+
+ process->waitList.push_back(Process::WaitRec(cond_addr, xc));
+ xc->suspend();
+
+ return 0;
+ }
+
+ /// Thread exit.
+ static SyscallReturn
+ m5_thread_exitFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ assert(xc->status() == ExecContext::Active);
+ xc->deallocate();
+
+ return 0;
+ }
+
+ /// Indirect syscall invocation (call #0).
+ static SyscallReturn
+ indirectSyscallFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+ {
+ int new_callnum = xc->getSyscallArg(0);
+ LiveProcess *lp = dynamic_cast<LiveProcess*>(process);
+ assert(lp);
+
+ for (int i = 0; i < 5; ++i)
+ xc->setSyscallArg(i, xc->getSyscallArg(i+1));
+
+
+ SyscallDesc *new_desc = lp->getDesc(new_callnum);
+ if (desc == NULL)
+ fatal("Syscall %d out of range", callnum);
+
+ new_desc->doSyscall(new_callnum, process, xc);
+
+ return 0;
+ }
+
+}; // class Tru64
+
+
+#endif // FULL_SYSTEM
+
#endif // __TRU64_HH__