diff options
Diffstat (limited to 'src/kern/freebsd')
| -rw-r--r-- | src/kern/freebsd/events.cc | 71 | ||||
| -rw-r--r-- | src/kern/freebsd/events.hh | 68 | ||||
| -rw-r--r-- | src/kern/freebsd/freebsd.hh | 120 |
3 files changed, 259 insertions, 0 deletions
diff --git a/src/kern/freebsd/events.cc b/src/kern/freebsd/events.cc new file mode 100644 index 000000000..2f4ceb056 --- /dev/null +++ b/src/kern/freebsd/events.cc @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> + * All rights reserved. + * + * This software was developed by the University of Cambridge Computer + * Laboratory as part of the CTSRD Project, with support from the UK Higher + * Education Innovation Fund (HEIF). + * + * 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. + */ + +#include "kern/freebsd/events.hh" + +#include <sstream> + +#include "arch/utility.hh" +#include "base/trace.hh" +#include "cpu/thread_context.hh" +#include "debug/DebugPrintf.hh" +#include "kern/system_events.hh" +#include "sim/arguments.hh" +#include "sim/pseudo_inst.hh" +#include "sim/system.hh" + +namespace FreeBSD { + +void +UDelayEvent::process(ThreadContext *tc) +{ + int arg_num; + + arg_num = 0; + + // Get the time in native size + uint64_t time = TheISA::getArgument(tc, arg_num, (uint16_t)-1, false); + + //DPRINTFN("DELAY(%d)\n", time); + + // convert parameter to ns + if (argDivToNs) + time /= argDivToNs; + + time *= argMultToNs; + + SkipFuncEvent::process(tc); + + PseudoInst::quiesceNs(tc, time); +} + +} // namespace FreeBSD diff --git a/src/kern/freebsd/events.hh b/src/kern/freebsd/events.hh new file mode 100644 index 000000000..1d3faa935 --- /dev/null +++ b/src/kern/freebsd/events.hh @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> + * All rights reserved. + * + * This software was developed by the University of Cambridge Computer + * Laboratory as part of the CTSRD Project, with support from the UK Higher + * Education Innovation Fund (HEIF). + * + * 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. + */ + +#ifndef __KERN_FREEBSD_EVENTS_HH__ +#define __KERN_FREEBSD_EVENTS_HH__ + +#include "kern/system_events.hh" + +namespace FreeBSD { + +/** A class to skip udelay() and related calls in the kernel. + * This class has two additional parameters that take the argument to udelay and + * manipulated it to come up with ns and eventually ticks to quiesce for. + * See descriptions of argDivToNs and argMultToNs below. + */ +class UDelayEvent : public SkipFuncEvent +{ + private: + /** value to divide arg by to create ns. This is present beacues the linux + * kernel code sometime precomputes the first multiply that is done in + * udelay() if the parameter is a constant. We need to undo it so here is + * how. */ + uint64_t argDivToNs; + + /** value to multiple arg by to create ns. Nominally, this is 1000 to + * convert us to ns, but since linux can do some preprocessing of constant + * values something else might be required. */ + uint64_t argMultToNs; + + public: + UDelayEvent(PCEventQueue *q, const std::string &desc, Addr addr, + uint64_t mult, uint64_t div) + : SkipFuncEvent(q, desc, addr), argDivToNs(div), argMultToNs(mult) {} + virtual void process(ThreadContext *xc); +}; + +} + +#endif diff --git a/src/kern/freebsd/freebsd.hh b/src/kern/freebsd/freebsd.hh new file mode 100644 index 000000000..e3d5cf5be --- /dev/null +++ b/src/kern/freebsd/freebsd.hh @@ -0,0 +1,120 @@ +/* + * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> + * All rights reserved. + * + * This software was developed by the University of Cambridge Computer + * Laboratory as part of the CTSRD Project, with support from the UK Higher + * Education Innovation Fund (HEIF). + * + * 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. + */ + +#ifndef __FREEBSD_HH__ +#define __FREEBSD_HH__ + +#include <string> + +#include "base/types.hh" +#include "kern/operatingsystem.hh" + +class ThreadContext; +class LiveProcess; + +/// +/// This class encapsulates the types, structures, constants, +/// functions, and syscall-number mappings specific to the Alpha FreeBSD +/// syscall interface. +/// +class FreeBSD : public OperatingSystem +{ + + public: + + //@{ + /// Basic FreeBSD types. + typedef uint64_t size_t; + typedef uint64_t off_t; + typedef int64_t time_t; + typedef int64_t clock_t; + typedef uint32_t uid_t; + typedef uint32_t gid_t; + //@} + + /// Clock ticks per second, for times(). + static const int M5_SC_CLK_TCK = 100; + + //@{ + /// ioctl() command codes. + static const unsigned TGT_TIOCGETA = 0x402c7413; + static const unsigned TGT_TIOCSETA = 0x802c7414; + static const unsigned TGT_TIOCSETAW = 0x802c7415; + static const unsigned TGT_FIONREAD = 0x4004667f; + //@} + + /// Return true for the ioctl codes for which we return ENOTTY + /// *without* printing a warning, since we know that ENOTTY is the + /// correct thing to return (and not just a sign that we don't + /// recognize the ioctl code. + static bool + isTtyReq(unsigned req) + { + switch (req) { + case TGT_TIOCGETA: + case TGT_TIOCSETA: + case TGT_TIOCSETAW: + case TGT_FIONREAD: + return true; + default: + return false; + } + } + + /// Resource constants for getrlimit(). + static const unsigned TGT_RLIMIT_CPU = 0; + static const unsigned TGT_RLIMIT_FSIZE = 1; + static const unsigned TGT_RLIMIT_DATA = 2; + static const unsigned TGT_RLIMIT_STACK = 3; + static const unsigned TGT_RLIMIT_CORE = 4; + static const unsigned TGT_RLIMIT_RSS = 5; + static const unsigned TGT_RLIMIT_MEMLOCK = 6; + static const unsigned TGT_RLIMIT_NPROC = 7; + static const unsigned TGT_RLIMIT_NOFILE = 8; + static const unsigned TGT_RLIMIT_SBSIZE = 9; + static const unsigned TGT_RLIMIT_VMEM = 10; + static const unsigned TGT_RLIMIT_AS = TGT_RLIMIT_VMEM; + static const unsigned TGT_RLIMIT_NPTS = 11; + static const unsigned TGT_RLIMIT_SWAP = 12; + static const unsigned TGT_RLIMIT_KQUEUES = 13; + + /// For getrusage(). + static const int TGT_RUSAGE_SELF = 0; + static const int TGT_RUSAGE_CHILDREN = -1; + static const int TGT_RUSAGE_THREAD = 1; + + // for *at syscalls + static const int TGT_AT_FDCWD = -100; + +}; // class FreeBSD + +#endif // __FREEBSD_HH__ |