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Diffstat (limited to 'src/arch/alpha/linux/threadinfo.hh')
-rw-r--r--src/arch/alpha/linux/threadinfo.hh112
1 files changed, 86 insertions, 26 deletions
diff --git a/src/arch/alpha/linux/threadinfo.hh b/src/arch/alpha/linux/threadinfo.hh
index b9ffe02ae..b0c8284be 100644
--- a/src/arch/alpha/linux/threadinfo.hh
+++ b/src/arch/alpha/linux/threadinfo.hh
@@ -32,9 +32,8 @@
#ifndef __ARCH_ALPHA_LINUX_LINUX_TREADNIFO_HH__
#define __ARCH_ALPHA_LINUX_LINUX_TREADNIFO_HH__
-#include "arch/alpha/linux/thread_info.hh"
#include "cpu/thread_context.hh"
-#include "kern/linux/sched.hh"
+#include "sim/system.hh"
#include "sim/vptr.hh"
namespace Linux {
@@ -43,47 +42,108 @@ class ThreadInfo
{
private:
ThreadContext *tc;
+ System *sys;
+ Addr pcbb;
+
+ template <typename T>
+ bool
+ get_data(const char *symbol, T &data)
+ {
+ Addr addr = 0;
+ if (!sys->kernelSymtab->findAddress(symbol, addr))
+ return false;
+
+ CopyOut(tc, &data, addr, sizeof(T));
+
+ data = TheISA::gtoh(data);
+
+ return true;
+ }
public:
- ThreadInfo(ThreadContext *_tc) : tc(_tc) {}
- ~ThreadInfo() {}
+ ThreadInfo(ThreadContext *_tc, Addr _pcbb = 0)
+ : tc(_tc), sys(tc->getSystemPtr()), pcbb(_pcbb)
+ {
- inline VPtr<thread_info>
+ }
+ ~ThreadInfo()
+ {}
+
+ inline Addr
curThreadInfo()
{
- Addr current;
-
- /* Each kernel stack is only 2 pages, the start of which is the
- * thread_info struct. So we can get the address by masking off
- * the lower 14 bits.
- */
- current = tc->readIntReg(TheISA::StackPointerReg) & ~ULL(0x3fff);
- return VPtr<thread_info>(tc, current);
+ Addr addr = pcbb;
+ Addr sp;
+
+ if (!addr)
+ addr = tc->readMiscRegNoEffect(TheISA::IPR_PALtemp23);
+
+ FunctionalPort *p = tc->getPhysPort();
+ p->readBlob(addr, (uint8_t *)&sp, sizeof(Addr));
+
+ return sp & ~ULL(0x3fff);
}
- inline VPtr<task_struct>
- curTaskInfo()
+ inline Addr
+ curTaskInfo(Addr thread_info = 0)
{
- Addr task = curThreadInfo()->task;
- return VPtr<task_struct>(tc, task);
+ int32_t offset;
+ if (!get_data("thread_info_task", offset))
+ return 0;
+
+ if (!thread_info)
+ thread_info = curThreadInfo();
+
+ Addr addr;
+ CopyOut(tc, &addr, thread_info + offset, sizeof(addr));
+
+ return addr;
}
- std::string
- curTaskName()
+ int32_t
+ curTaskPID(Addr thread_info = 0)
{
- return curTaskInfo()->name;
+ Addr offset;
+ if (!get_data("task_struct_pid", offset))
+ return -1;
+
+ int32_t pid;
+ CopyOut(tc, &pid, curTaskInfo(thread_info) + offset, sizeof(pid));
+
+ return pid;
}
- int32_t
- curTaskPID()
+ int64_t
+ curTaskStart(Addr thread_info = 0)
{
- return curTaskInfo()->pid;
+ Addr offset;
+ if (!get_data("task_struct_start_time", offset))
+ return -1;
+
+ int64_t data;
+ // start_time is actually of type timespec, but if we just
+ // grab the first long, we'll get the seconds out of it
+ CopyOut(tc, &data, curTaskInfo(thread_info) + offset, sizeof(data));
+
+ return data;
}
- uint64_t
- curTaskStart()
+ std::string
+ curTaskName(Addr thread_info = 0)
{
- return curTaskInfo()->start;
+ int32_t offset;
+ int32_t size;
+
+ if (!get_data("task_struct_comm", offset))
+ return "FailureIn_curTaskName";
+
+ if (!get_data("task_struct_comm_size", size))
+ return "FailureIn_curTaskName";
+
+ char buffer[size + 1];
+ CopyStringOut(tc, buffer, curTaskInfo(thread_info) + offset, size);
+
+ return buffer;
}
};