096598c05a
This expands those functions into code which extracts the virt proxy and then uses the appropriate method on it. This has two benefits. First, the Copy* functions where mostly redundant wrappers around the methods the proxy port already had. Second, using them forced a particular port which might not actually be what the user wanted. Change-Id: I62084631dd080061e3c74997125164f40da2d77c Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18575 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Tested-by: kokoro <noreply+kokoro@google.com>
173 lines
4.2 KiB
C++
173 lines
4.2 KiB
C++
/*
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* Copyright (c) 2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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#include "arch/arm/stacktrace.hh"
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#include <string>
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#include "arch/arm/isa_traits.hh"
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#include "arch/arm/vtophys.hh"
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#include "base/bitfield.hh"
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#include "base/trace.hh"
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#include "cpu/base.hh"
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#include "cpu/thread_context.hh"
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#include "mem/fs_translating_port_proxy.hh"
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#include "sim/system.hh"
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namespace ArmISA
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{
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static int32_t
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readSymbol(ThreadContext *tc, const std::string name)
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{
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FSTranslatingPortProxy &vp = tc->getVirtProxy();
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SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
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Addr addr;
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if (!symtab->findAddress(name, addr))
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panic("thread info not compiled into kernel\n");
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return vp.read<int32_t>(addr, GuestByteOrder);
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}
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ProcessInfo::ProcessInfo(ThreadContext *_tc) : tc(_tc)
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{
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thread_info_size = readSymbol(tc, "thread_info_size");
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task_struct_size = readSymbol(tc, "task_struct_size");
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task_off = readSymbol(tc, "thread_info_task");
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pid_off = readSymbol(tc, "task_struct_pid");
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name_off = readSymbol(tc, "task_struct_comm");
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}
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Addr
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ProcessInfo::task(Addr ksp) const
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{
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Addr base = ksp & ~0x1fff;
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if (base == ULL(0xffffffffc0000000))
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return 0;
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Addr tsk;
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FSTranslatingPortProxy &vp = tc->getVirtProxy();
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tsk = vp.read<Addr>(base + task_off, GuestByteOrder);
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return tsk;
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}
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int
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ProcessInfo::pid(Addr ksp) const
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{
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Addr task = this->task(ksp);
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if (!task)
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return -1;
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uint16_t pd;
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FSTranslatingPortProxy &vp = tc->getVirtProxy();
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pd = vp.read<uint16_t>(task + pid_off, GuestByteOrder);
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return pd;
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}
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std::string
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ProcessInfo::name(Addr ksp) const
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{
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Addr task = this->task(ksp);
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if (!task)
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return "unknown";
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char comm[256];
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tc->getVirtProxy().readString(comm, task + name_off, sizeof(comm));
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if (!comm[0])
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return "startup";
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return comm;
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}
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StackTrace::StackTrace()
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: tc(0), stack(64)
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{
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}
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StackTrace::StackTrace(ThreadContext *_tc, const StaticInstPtr &inst)
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: tc(0), stack(64)
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{
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trace(_tc, inst);
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}
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StackTrace::~StackTrace()
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{
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}
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void
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StackTrace::trace(ThreadContext *_tc, bool is_call)
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{
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}
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bool
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StackTrace::isEntry(Addr addr)
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{
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return false;
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}
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bool
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StackTrace::decodeStack(MachInst inst, int &disp)
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{
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return false;
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}
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bool
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StackTrace::decodeSave(MachInst inst, int ®, int &disp)
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{
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return false;
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}
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/*
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* Decode the function prologue for the function we're in, and note
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* which registers are stored where, and how large the stack frame is.
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*/
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bool
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StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
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int &size, Addr &ra)
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{
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return false;
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}
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#if TRACING_ON
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void
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StackTrace::dump()
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{
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DPRINTFN("------ Stack ------\n");
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DPRINTFN(" Not implemented\n");
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}
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#endif
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}
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