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Initial support for CPU switching. New SamplingCPU object encompasses a set

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of CPUs that get switched round-robin (though currently we're only shooting for
two CPUs and one switch event, and even that doesn't quite work yet).  Registration
of ExecContexts with System/Process object factored out so we can create two CPUs
but only register one of them at a time.  Also worked at making behavior and naming
in System and Process objects more consistent.

arch/alpha/ev5.cc:
    Rename ipr_init to initIPRs and get rid of unused mem arg.
arch/alpha/fake_syscall.cc:
    Process:numCpus is now a function (not a data member).
base/remote_gdb.hh:
    Support for ExecContext switching.
cpu/base_cpu.cc:
cpu/base_cpu.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/simple_cpu/simple_cpu.hh:
    Support for ExecContext switching.
    Renamed contexts array to execContexts to be consistent with Process.
    CPU ID now auto-assigned by system object.
cpu/simple_cpu/simple_cpu.cc:
    Support for ExecContext switching.
    Renamed contexts array to execContexts to be consistent with Process.
    CPU ID now auto-assigned by system object.
    Cleaned up MP full-system initialization a bit.
dev/alpha_console.cc:
    Renamed xcvec array to execContexts to be consistent with Process.
kern/tru64/tru64_system.cc:
kern/tru64/tru64_system.hh:
    Support for ExecContext switching.
    CPU ID now auto-assigned by system object.
sim/prog.cc:
sim/prog.hh:
    Support for ExecContext switching.
    Process:numCpus is now a function (not a data member).
sim/system.cc:
sim/system.hh:
    Support for ExecContext switching.
    Renamed xcvec array to execContexts to be consistent with Process.

--HG--
extra : convert_revision : 79649cffad5bf3e83de8df44236941907926d791
This commit is contained in:
Steve Reinhardt
2003-10-23 19:07:52 -07:00
parent 73b050a541
commit f5da73b688
16 changed files with 334 additions and 169 deletions
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2
dev/alpha_console.cc
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@@ -153,7 +153,7 @@ AlphaConsole::write(MemReqPtr req, const uint8_t *data)
int cpu = val;
assert(cpu > 0 && "Must not access primary cpu");
ExecContext *other_xc = req->xc->system->xcvec[cpu];
ExecContext *other_xc = req->xc->system->execContexts[cpu];
other_xc->regs.intRegFile[16] = cpu;
other_xc->regs.ipr[TheISA::IPR_PALtemp16] = cpu;
other_xc->regs.intRegFile[0] = cpu;