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 | 9 |
2 files changed, 73 insertions, 1 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 a41fac9a7..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 @@ -158,6 +162,9 @@ class Linux : public OperatingSystem 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 |