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authorGabe Black <gblack@eecs.umich.edu>2007-03-05 14:52:28 +0000
committerGabe Black <gblack@eecs.umich.edu>2007-03-05 14:52:28 +0000
commit43b8f51bb8d556b505f5916256d777ecd145ce30 (patch)
tree5b37d72c556a64923c3c1b13e109108d23de212e /src/arch
parent2e6cf12963dcd8f3fd0d551aa7d9871ede6bc1fb (diff)
downloadgem5-43b8f51bb8d556b505f5916256d777ecd145ce30.tar.xz
Filled in a stub header file for a stacktrace object. I'm still not sure what this is for, and it probably doesn't work on anything but Alpha.
--HG-- extra : convert_revision : 9bc3833628d31799a7b578c450dac096a19aead3
Diffstat (limited to 'src/arch')
-rw-r--r--src/arch/x86/stacktrace.hh86
1 files changed, 84 insertions, 2 deletions
diff --git a/src/arch/x86/stacktrace.hh b/src/arch/x86/stacktrace.hh
index 4e2e351b2..854fb397c 100644
--- a/src/arch/x86/stacktrace.hh
+++ b/src/arch/x86/stacktrace.hh
@@ -31,10 +31,92 @@
#ifndef __ARCH_X86_STACKTRACE_HH__
#define __ARCH_X86_STACKTRACE_HH__
-#error X86 is not yet supported!
+#include "base/trace.hh"
+#include "cpu/static_inst.hh"
+class ThreadContext;
namespace X86ISA
{
-};
+ class StackTrace;
+
+ class ProcessInfo
+ {
+ private:
+ ThreadContext *tc;
+
+ int thread_info_size;
+ int task_struct_size;
+ int task_off;
+ int pid_off;
+ int name_off;
+
+ public:
+ ProcessInfo(ThreadContext *_tc);
+
+ Addr task(Addr ksp) const;
+ int pid(Addr ksp) const;
+ std::string name(Addr ksp) const;
+ };
+
+ class StackTrace
+ {
+ private:
+ ThreadContext *tc;
+ std::vector<Addr> stack;
+
+ private:
+ bool isEntry(Addr addr);
+ bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
+ bool decodeSave(MachInst inst, int &reg, int &disp);
+ bool decodeStack(MachInst inst, int &disp);
+
+ void trace(ThreadContext *tc, bool is_call);
+
+ public:
+ StackTrace();
+ StackTrace(ThreadContext *tc, StaticInstPtr inst);
+ ~StackTrace();
+
+ void clear()
+ {
+ tc = 0;
+ stack.clear();
+ }
+
+ bool valid() const { return tc != NULL; }
+ bool trace(ThreadContext *tc, StaticInstPtr inst);
+
+ public:
+ const std::vector<Addr> &getstack() const { return stack; }
+
+ static const int user = 1;
+ static const int console = 2;
+ static const int unknown = 3;
+
+#if TRACING_ON
+ private:
+ void dump();
+
+ public:
+ void dprintf() { if (DTRACE(Stack)) dump(); }
+#else
+ public:
+ void dprintf() {}
+#endif
+ };
+
+ inline bool
+ StackTrace::trace(ThreadContext *tc, StaticInstPtr inst)
+ {
+ if (!inst->isCall() && !inst->isReturn())
+ return false;
+
+ if (valid())
+ clear();
+
+ trace(tc, !inst->isReturn());
+ return true;
+ }
+}
#endif // __ARCH_X86_STACKTRACE_HH__