summaryrefslogtreecommitdiff
path: root/src/kern/linux
AgeCommit message (Collapse)Author
2017-12-14misc: Updates for gcc7.2 for x86Jason Lowe-Power
GCC 7.2 is much stricter than previous GCC versions. The following changes are needed: * There is now a warning if there is an implicit fallthrough between two case statments. C++17 adds the [[fallthrough]]; declaration. However, to support non C++17 standards (i.e., C++11), we use M5_FALLTHROUGH. M5_FALLTHROUGH checks for [[fallthrough]] compliant C++17 compiler and if that doesn't exist, it defaults to nothing (no older compilers generate warnings). * The above resulted in a couple of bugs that were found. This is noted in the review request on gerrit. * throw() for dynamic exception specification is deprecated * There were a couple of new uninitialized variable warnings * Can no longer perform bitwise operations on a bool. * Must now include <functional> for std::function * Compiler bug for void* lambda. Changed to auto as work around. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82878 Change-Id: I5d4c782a4e133fa4cdb119e35d9aff68c6e2958e Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/5802 Reviewed-by: Gabe Black <gabeblack@google.com>
2017-03-09syscall-emul: Add functionality to open syscallsBrandon Potter
This changeset adds refactors the existing open system call, adds the openat variant (enabled for x86 builds), and adds additional "special file" test cases for /proc/meminfo and /etc/passwd. Change-Id: I6f429db65bbf2a28ffa3fd12df518c2d0de49663 Reviewed-on: https://gem5-review.googlesource.com/2265 Maintainer: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com> Reviewed-by: Michael LeBeane <Michael.Lebeane@amd.com>
2016-11-09syscall_emul: [patch 5/22] remove LiveProcess class and use Process insteadBrandon Potter
The EIOProcess class was removed recently and it was the only other class which derived from Process. Since every Process invocation is also a LiveProcess invocation, it makes sense to simplify the organization by combining the fields from LiveProcess into Process.
2016-11-09style: [patch 3/22] reduce include dependencies in some headersBrandon Potter
Used cppclean to help identify useless includes and removed them. This involved erroneously included headers, but also cases where forward declarations could have been used rather than a full include.
2016-11-09style: [patch 1/22] use /r/3648/ to reorganize includesBrandon Potter
2016-06-20kern, arm: Dump dmesg on kernel panic/oopsAndreas Sandberg
Add helper functions to dump the guest kernel's dmesg buffer to a text file in m5out. This functionality is split into two parts. First, a dmesg dump function that can be used in other places: void Linux::dumpDmesg(ThreadContext *, std::ostream &) This function is used to implement two PCEvents: DmesgDumpEvent and KernelPanic event. The only difference between the two is that the latter produces a gem5 panic instead of a warning in addition to dumping the kernel log. Change-Id: I6d2af1d666ace57124089648ea906f6c787ac63c Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Gabor Dozsa <gabor.dozsa@arm.com>
2016-04-01syscall_emul: remove mmapFlagTableSteve Reinhardt
After all this it turns out we don't even use it.
2016-04-01syscall_emul: factor out flag tables into common fileSteve Reinhardt
The openFlagTable and mmapFlagTables for emulated Linux platforms are basically identical, but are specified repetitively for every platform. Use a common file that gets included for each platform so that we only have one copy, making them more consistent and simplifying changes (like adding #ifdefs). In the process, made some minor fixes that slipped through due to previous inconsistencies, and added more #ifdefs to try to fix building on alternative hosts.
2016-03-17syscall_emul: add many Linux kernel flagsBrandon Potter
2015-10-10sim: Don't quiesce UDelayEvents with 0 latencyJoel Hestness
ARM uses UDelayEvents to emulate kernel __*udelay functions and speed up simulation. UDelayEvents call Pseudoinst::quiesceNs to quiesce the system for a specified delay. Changeset 10341:0b4d10f53c2d introduced the requirement that any quiesce process that is started must also be completed by scheduling an EndQuiesceEvent. This change causes the CPU to hang if an IsQuiesce instruction is executed, but the corresponding EndQuiesceEvent is not scheduled. Changeset 11058:d0934b57735a introduces a fix for uses of PseudoInst::quiesce* that would conditionally execute the EndQuiesceEvent. ARM UDelayEvents specify quiesce period of 0 ns (src/arch/arm/linux/system.cc), so changeset 11058 causes these events to now execute full quiesce processes, greatly increasing the total instructions executed in kernel delay loops and slowing simulation. This patch updates the UDelayEvent to conditionally execute PseudoInst::quiesceNs (**a quiesce operation**) only if the specified delay is >0 ns. The result is ARM delay loops no longer execute instructions for quiesce handling, and regression time returns to normal.
2015-04-22syscall_emul: implement clock_gettime system callBrandon Potter
2014-10-16dev: Use shared_ptr for Arguments::DataAndreas Hansson
This patch takes a first few steps in transitioning from the ad-hoc RefCountingPtr to the c++11 shared_ptr. There are no changes in behaviour, and the code modifications are mainly introducing the use of make_shared. Note that the class could use unique_ptr rather than shared_ptr, was it not for the postfix increment and decrement operators.
2014-07-18kern: get rid of unused linux syscall filesSteve Reinhardt
2014-01-24sim: Add openat/fstatat syscalls and fix mremapChris Adeniyi-Jones
This patch adds support for the openat and fstatat syscalls and broadens the support for mremap to make it work on OS X.
2013-02-19scons: Fix up numerous warnings about name shadowingAndreas Hansson
This patch address the most important name shadowing warnings (as produced when using gcc/clang with -Wshadow). There are many locations where constructor parameters and function parameters shadow local variables, but these are left unchanged.
2012-09-21SE: Ignore FUTEX_PRIVATE_FLAG of sys_futexLluc Alvarez
This patch ignores the FUTEX_PRIVATE_FLAG of the sys_futex system call in SE mode. With this patch, when sys_futex with the options FUTEX_WAIT_PRIVATE or FUTEX_WAKE_PRIVATE is emulated, the FUTEX_PRIVATE_FLAG is ignored and so their behaviours are the regular FUTEX_WAIT and FUTEX_WAKE. Emulating FUTEX_WAIT_PRIVATE and FUTEX_WAKE_PRIVATE as if they were non-private is safe from a functional point of view. The FUTEX_PRIVATE_FLAG does not change the semantics of the futex, it's just a mechanism to improve performance under certain circunstances that can be ignored in SE mode.
2012-08-06syscall emulation: Enabled getrlimit and getrusage for x86.Marc Orr
Added/moved rlimit constants to base linux header file. This patch is a revised version of Vince Weaver's earlier patch.
2012-08-06syscall_emul: clean up open() code a bit.Steve Reinhardt
2012-08-06syscall emulation: Clean up ioctl handling, and implement for x86.Marc Orr
Enable different whitelists for different OS/arch combinations, since some use the generic Linux definitions only, and others use definitions inherited from earlier Unix flavors on those architectures. Also update x86 function pointers so ioctl is no longer unimplemented on that platform. This patch is a revised version of Vince Weaver's earlier patch.
2012-07-10syscall emulation: Add the futex system call.Marc Orr
2012-05-30gcc: Small fixes to compile with gcc 4.7Andreas Hansson
This patch makes two very minor changes to please gcc 4.7. The CopyData function no longer exists and this has been replaced. For some reason previous versions of gcc did not complain on the const char casting not having an implementation, but this is now addressed.
2011-11-18SE/FS: Get rid of includes of config/full_system.hh.Gabe Black
2011-10-30SE/FS: Make getProcessPtr available in both modes, and get rid of FULL_SYSTEMs.Gabe Black
2011-04-15trace: reimplement the DTRACE function so it doesn't use a vectorNathan Binkert
At the same time, rename the trace flags to debug flags since they have broader usage than simply tracing. This means that --trace-flags is now --debug-flags and --trace-help is now --debug-help
2011-04-15includes: sort all includesNathan Binkert
2011-04-04ARM: Fix multiplication error in udelayAli Saidi
2011-03-17ARM: Detect and skip udelay() functions in linux kernel.Ali Saidi
This change speeds up booting, especially in MP cases, by not executing udelay() on the core but instead skipping ahead tha amount of time that is being delayed.
2011-03-17O3: Send instruction back to fetch on squash to seed predecoder correctly.Ali Saidi
2010-09-10style: fix sorting of includes and whitespace in some filesNathan Binkert
2009-11-14SE: Fix SE mode OS X compilation.Ali Saidi
2009-11-04build: fix compile problems pointed out by gcc 4.4Nathan Binkert
2009-10-24syscall: Implementation of the time system call.Timothy M. Jones
2009-10-24syscall: Implementation of the times system callTimothy M. Jones
2009-09-23arch: nuke arch/isa_specific.hh and move stuff to generated config/the_isa.hhNathan Binkert
2009-06-04types: clean up types, especially signed vs unsignedNathan Binkert
2009-05-17includes: use base/types.hh not inttypes.h or stdint.hNathan Binkert
2009-01-17Fix issue 326: glibc non-deterministic because it reads /procAli Saidi
2008-09-10style: Remove non-leading tabs everywhere they shouldn't be. Developers ↵Ali Saidi
should configure their editors to not insert tabs
2007-10-31String constant const-ness changes to placate g++ 4.2.Steve Reinhardt
Also some bug fixes in MIPS ISA uncovered by g++ warnings (Python string compares don't work in C++!). --HG-- extra : convert_revision : b347cc0108f23890e9b73b3ee96059f0cea96cf6
2007-10-31Linux Support: Finally update vptr for new memory system.Ali Saidi
--HG-- extra : convert_revision : 8b4927431189abc12201d13428a31b746cdb7dee
2007-08-01Arguments: Get rid of duplicate code for the Arguments class in each ↵Ali Saidi
architecture. Move the argument files to src/sim and add a utility.cc file with a function getArguments() that returns the given argument in the architecture specific fashion. getArguments() was getArg() is the architecture specific Argument class and has had all magic numbers replaced with meaningful constants. Also add a function to the Argument class for testing if an argument is NULL. --HG-- rename : src/arch/alpha/arguments.cc => src/sim/arguments.cc rename : src/arch/alpha/arguments.hh => src/sim/arguments.hh extra : convert_revision : 8b93667bafaa03b52aadb64d669adfe835266b8e
2007-05-01change the way dprintf works so the cache accesses required to fulfill the ↵Ali Saidi
dprintf aren't show in between the Cycle: name: printing and the actual formatted string being printed --HG-- extra : convert_revision : 8876ba938ba971f854bab490c9af10db039a2e83
2007-04-30always skip the debugprintf function (DebugPrintf traceflag shouldn't ↵Ali Saidi
matter). Otherwise, when you turn on debugprintf alters the execution --HG-- extra : convert_revision : 1c9a665e3b7234cacf06c31d2e7886244a9e82bc
2007-02-10Clean up tracing stuff more, get rid of the trace log sinceNathan Binkert
its not all that useful. Fix a few bugs with python/C++ integration. --HG-- extra : convert_revision : a706512f7dc8b0c88f1ff96fe35ab8fbf9548b78
2006-11-06Took the Alpha prefix off of AlphaArguments, and made sure it was being used ↵Gabe Black
from TheISA:: rather than AlphaISA:: --HG-- extra : convert_revision : 17c143d3cbc2f58a7a9d01366a8f649810ff7f33
2006-09-30Some code cleanup.Gabe Black
src/kern/linux/linux.hh: src/kern/solaris/solaris.hh: Some code cleanup. Uncommented some typedefs. src/kern/tru64/tru64.hh: Some code cleanup. Deleted an obsoleted function. --HG-- extra : convert_revision : b165fd43b9c3113d717b6ac9b02593fd750580b0
2006-09-15Changes to correct stat behaviorGabe Black
--HG-- extra : convert_revision : 43e5788105738aebd79acb05301bb7da68bfe129
2006-06-17Merge zizzer.eecs.umich.edu:/bk/newmemSteve Reinhardt
into tpx31.:C:/cygwin/home/stever/bk/newmem --HG-- extra : convert_revision : 81affa14d8d900ccd3d1c44cb160eaecfb8599d1
2006-06-17Fixes to compile under Cygwin.Steve Reinhardt
src/kern/linux/linux.hh: src/kern/solaris/solaris.hh: Rename BSD_HOST to the more specific NO_STAT64. src/sim/byteswap.hh: Replace set of swap_byte functions with a single templated version. Hope this fixes compiler issues with e.g. int32_t vs int disambiguation. src/sim/syscall_emul.hh: Rename BSD_HOST to the more specific NO_STAT64. Set this for __CYGWIN__. --HG-- extra : convert_revision : 86a63b4b60d2445a566321333381d79ba8ab63c4
2006-06-17Add myself to list of authorsNathan Binkert
--HG-- extra : convert_revision : 0c9a892127476d586fb8bff1b0eb7342c6b1f166