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Diffstat (limited to 'src/arch/alpha/linux/system.hh')
| -rw-r--r-- | src/arch/alpha/linux/system.hh | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/arch/alpha/linux/system.hh b/src/arch/alpha/linux/system.hh new file mode 100644 index 000000000..46bf6ea91 --- /dev/null +++ b/src/arch/alpha/linux/system.hh @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2004-2006 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 + * Lisa Hsu + * Nathan Binkert + */ + +#ifndef __ARCH_ALPHA_LINUX_SYSTEM_HH__ +#define __ARCH_ALPHA_LINUX_SYSTEM_HH__ + +class ExecContext; + +class BreakPCEvent; +class IdleStartEvent; + +#include "arch/alpha/system.hh" +#include "kern/linux/events.hh" + +using namespace AlphaISA; +using namespace Linux; + +/** + * This class contains linux specific system code (Loading, Events, Binning). + * It points to objects that are the system binaries to load and patches them + * appropriately to work in simulator. + */ +class LinuxAlphaSystem : public AlphaSystem +{ + private: + class SkipDelayLoopEvent : public SkipFuncEvent + { + public: + SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr) + : SkipFuncEvent(q, desc, addr) {} + virtual void process(ExecContext *xc); + }; + + class PrintThreadInfo : public PCEvent + { + public: + PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr) + : PCEvent(q, desc, addr) {} + virtual void process(ExecContext *xc); + }; + + + /** + * Addresses defining where the kernel bootloader places various + * elements. Details found in include/asm-alpha/system.h + */ + Addr KernelStart; // Lookup the symbol swapper_pg_dir + + public: + Addr InitStack() const { return KernelStart + 0x02000; } + Addr EmptyPGT() const { return KernelStart + 0x04000; } + Addr EmptyPGE() const { return KernelStart + 0x08000; } + Addr ZeroPGE() const { return KernelStart + 0x0A000; } + Addr StartAddr() const { return KernelStart + 0x10000; } + + Addr Param() const { return ZeroPGE() + 0x0; } + Addr CommandLine() const { return Param() + 0x0; } + Addr InitrdStart() const { return Param() + 0x100; } + Addr InitrdSize() const { return Param() + 0x108; } + static const int CommandLineSize = 256; + + private: +#ifndef NDEBUG + /** Event to halt the simulator if the kernel calls panic() */ + BreakPCEvent *kernelPanicEvent; + + /** Event to halt the simulator if the kernel calls die_if_kernel */ + BreakPCEvent *kernelDieEvent; +#endif + + /** + * Event to skip determine_cpu_caches() because we don't support + * the IPRs that the code can access to figure out cache sizes + */ + SkipFuncEvent *skipCacheProbeEvent; + + /** PC based event to skip the ide_delay_50ms() call */ + SkipFuncEvent *skipIdeDelay50msEvent; + + /** + * PC based event to skip the dprink() call and emulate its + * functionality + */ + DebugPrintkEvent *debugPrintkEvent; + + /** + * Skip calculate_delay_loop() rather than waiting for this to be + * calculated + */ + SkipDelayLoopEvent *skipDelayLoopEvent; + + /** + * Event to print information about thread switches if the trace flag + * Thread is set + */ + PrintThreadInfo *printThreadEvent; + + /** + * Event to bin Interrupts seperately from kernel code + */ + InterruptStartEvent *intStartEvent; + + /** + * Event to bin Interrupts seperately from kernel code + */ + InterruptEndEvent *intEndEvent; + InterruptEndEvent *intEndEvent2; + InterruptEndEvent *intEndEvent3; + + /** Grab the PCBB of the idle process when it starts */ + IdleStartEvent *idleStartEvent; + + public: + LinuxAlphaSystem(Params *p); + ~LinuxAlphaSystem(); + + void setDelayLoop(ExecContext *xc); +}; + +#endif // __ARCH_ALPHA_LINUX_SYSTEM_HH__ |