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29 #ifndef __ARCH_ALPHA_LINUX_SYSTEM_HH__
30 #define __ARCH_ALPHA_LINUX_SYSTEM_HH__
37 #include "arch/alpha/system.hh"
38 #include "kern/linux/events.hh"
40 using namespace AlphaISA;
41 using namespace Linux;
44 * This class contains linux specific system code (Loading, Events, Binning).
45 * It points to objects that are the system binaries to load and patches them
46 * appropriately to work in simulator.
48 class LinuxAlphaSystem : public AlphaSystem
51 class SkipDelayLoopEvent : public SkipFuncEvent
54 SkipDelayLoopEvent(PCEventQueue *q, const std::string &desc, Addr addr)
55 : SkipFuncEvent(q, desc, addr) {}
56 virtual void process(ExecContext *xc);
59 class PrintThreadInfo : public PCEvent
62 PrintThreadInfo(PCEventQueue *q, const std::string &desc, Addr addr)
63 : PCEvent(q, desc, addr) {}
64 virtual void process(ExecContext *xc);
69 * Addresses defining where the kernel bootloader places various
70 * elements. Details found in include/asm-alpha/system.h
72 Addr KernelStart; // Lookup the symbol swapper_pg_dir
75 Addr InitStack() const { return KernelStart + 0x02000; }
76 Addr EmptyPGT() const { return KernelStart + 0x04000; }
77 Addr EmptyPGE() const { return KernelStart + 0x08000; }
78 Addr ZeroPGE() const { return KernelStart + 0x0A000; }
79 Addr StartAddr() const { return KernelStart + 0x10000; }
81 Addr Param() const { return ZeroPGE() + 0x0; }
82 Addr CommandLine() const { return Param() + 0x0; }
83 Addr InitrdStart() const { return Param() + 0x100; }
84 Addr InitrdSize() const { return Param() + 0x108; }
85 static const int CommandLineSize = 256;
89 /** Event to halt the simulator if the kernel calls panic() */
90 BreakPCEvent *kernelPanicEvent;
92 /** Event to halt the simulator if the kernel calls die_if_kernel */
93 BreakPCEvent *kernelDieEvent;
97 * Event to skip determine_cpu_caches() because we don't support
98 * the IPRs that the code can access to figure out cache sizes
100 SkipFuncEvent *skipCacheProbeEvent;
102 /** PC based event to skip the ide_delay_50ms() call */
103 SkipFuncEvent *skipIdeDelay50msEvent;
106 * PC based event to skip the dprink() call and emulate its
109 DebugPrintkEvent *debugPrintkEvent;
112 * Skip calculate_delay_loop() rather than waiting for this to be
115 SkipDelayLoopEvent *skipDelayLoopEvent;
118 * Event to print information about thread switches if the trace flag
121 PrintThreadInfo *printThreadEvent;
124 * Event to bin Interrupts seperately from kernel code
126 InterruptStartEvent *intStartEvent;
129 * Event to bin Interrupts seperately from kernel code
131 InterruptEndEvent *intEndEvent;
132 InterruptEndEvent *intEndEvent2;
133 InterruptEndEvent *intEndEvent3;
135 /** Grab the PCBB of the idle process when it starts */
136 IdleStartEvent *idleStartEvent;
139 LinuxAlphaSystem(Params *p);
142 void setDelayLoop(ExecContext *xc);
145 #endif // __ARCH_ALPHA_LINUX_SYSTEM_HH__