diff options
Diffstat (limited to 'src/kern/linux')
| -rw-r--r-- | src/kern/linux/linux.cc | 65 | ||||
| -rw-r--r-- | src/kern/linux/linux.hh | 131 |
2 files changed, 134 insertions, 62 deletions
diff --git a/src/kern/linux/linux.cc b/src/kern/linux/linux.cc new file mode 100644 index 000000000..b14e3c709 --- /dev/null +++ b/src/kern/linux/linux.cc @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2009 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Ali Saidi + */ + +#include <string> + +#include "cpu/thread_context.hh" +#include "kern/linux/linux.hh" +#include "sim/process.hh" +#include "sim/system.hh" + +int +Linux::openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc) +{ + DPRINTF(SyscallVerbose, "Opening special file: %s\n", path.c_str()); + if (path.compare(0, 13, "/proc/meminfo") == 0) { + std::string data = Linux::procMeminfo(process, tc); + FILE *f = tmpfile(); + int fd = fileno(f); + int ret M5_VAR_USED = fwrite(data.c_str(), 1, data.size(), f); + assert(ret == data.size()); + rewind(f); + return fd; + } + + warn("Attempting to open special file: %s. Ignorning. Simulation may" + " take un-expected code path or be non-deterministic until proper" + " handling is implemented.\n", path.c_str()); + return -1; +} + +std::string +Linux::procMeminfo(LiveProcess *process, ThreadContext *tc) +{ + return csprintf("MemTotal:%12d kB\nMemFree: %12d kB\n", + process->system->memSize() >> 10, + process->system->freeMemSize() >> 10); +} + diff --git a/src/kern/linux/linux.hh b/src/kern/linux/linux.hh index 6e0b37d91..ad35fa726 100644 --- a/src/kern/linux/linux.hh +++ b/src/kern/linux/linux.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2004-2005 The Regents of The University of Michigan + * Copyright (c) 2004-2009 The Regents of The University of Michigan * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -39,9 +39,13 @@ class Linux {}; #else //!FULL_SYSTEM #include <inttypes.h> +#include <string> #include "kern/operatingsystem.hh" +class ThreadContext; +class LiveProcess; + /// /// This class encapsulates the types, structures, constants, /// functions, and syscall-number mappings specific to the Alpha Linux @@ -65,46 +69,46 @@ class Linux : public OperatingSystem /// gets #defined to something else on some systems. This type /// can be specialized by architecture specific "Linux" classes typedef struct { - 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 + 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 } tgt_stat; // same for stat64 typedef struct { - 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 st_atimeX; - uint64_t st_atime_nsec; - uint64_t st_mtimeX; - uint64_t st_mtime_nsec; - uint64_t st_ctimeX; - uint64_t st_ctime_nsec; - int64_t ___unused[3]; + 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 st_atimeX; + uint64_t st_atime_nsec; + uint64_t st_mtimeX; + uint64_t st_mtime_nsec; + uint64_t st_ctimeX; + uint64_t st_ctime_nsec; + int64_t ___unused[3]; } tgt_stat64; /// Length of strings in struct utsname (plus 1 for null char). @@ -112,23 +116,23 @@ class Linux : public OperatingSystem /// 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. + 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 + uint64_t rlim_cur; //!< soft limit + uint64_t rlim_max; //!< hard limit }; /// For gettimeofday(). struct timeval { - int64_t tv_sec; //!< seconds - int64_t tv_usec; //!< microseconds + int64_t tv_sec; //!< seconds + int64_t tv_usec; //!< microseconds }; // For writev/readv @@ -140,24 +144,27 @@ class Linux : public OperatingSystem /// 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 " + 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 " }; + static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc); + static std::string procMeminfo(LiveProcess *process, ThreadContext *tc); + }; // class Linux |