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authorGabe Black <gblack@eecs.umich.edu>2007-11-12 14:38:17 -0800
committerGabe Black <gblack@eecs.umich.edu>2007-11-12 14:38:17 -0800
commit7a39457d7ff5fd80484061a4ff7006921899b229 (patch)
tree242eef5cf76dbf8567e2df6aa751cc956a79b683
parent53cb6cbcc15a2c38e38c22da60db3e025e6ddc17 (diff)
downloadgem5-7a39457d7ff5fd80484061a4ff7006921899b229.tar.xz
X86: Make the micropc available through the thread context objects.
This is necssary for fault handlers that branch to non-zero micro PCs. --HG-- extra : convert_revision : c1cb4863d779a9f4a508d0b450e64fb7a985f264
-rwxr-xr-xsrc/cpu/o3/thread_context.hh10
-rwxr-xr-xsrc/cpu/o3/thread_context_impl.hh30
-rw-r--r--src/cpu/thread_context.hh16
3 files changed, 55 insertions, 1 deletions
diff --git a/src/cpu/o3/thread_context.hh b/src/cpu/o3/thread_context.hh
index 31e08db4c..55b385d11 100755
--- a/src/cpu/o3/thread_context.hh
+++ b/src/cpu/o3/thread_context.hh
@@ -203,6 +203,16 @@ class O3ThreadContext : public ThreadContext
/** Sets this thread's next PC. */
virtual void setNextPC(uint64_t val);
+ virtual uint64_t readMicroPC()
+ { return cpu->readMicroPC(thread->readTid()); }
+
+ virtual void setMicroPC(uint64_t val);
+
+ virtual uint64_t readNextMicroPC()
+ { return cpu->readNextMicroPC(thread->readTid()); }
+
+ virtual void setNextMicroPC(uint64_t val);
+
/** Reads a miscellaneous register. */
virtual MiscReg readMiscRegNoEffect(int misc_reg)
{ return cpu->readMiscRegNoEffect(misc_reg, thread->readTid()); }
diff --git a/src/cpu/o3/thread_context_impl.hh b/src/cpu/o3/thread_context_impl.hh
index efbbc2329..55584629e 100755
--- a/src/cpu/o3/thread_context_impl.hh
+++ b/src/cpu/o3/thread_context_impl.hh
@@ -289,9 +289,13 @@ O3ThreadContext<Impl>::copyArchRegs(ThreadContext *tc)
// Copy the misc regs.
TheISA::copyMiscRegs(tc, this);
- // Then finally set the PC and the next PC.
+ // Then finally set the PC, the next PC, the nextNPC, the micropc, and the
+ // next micropc.
cpu->setPC(tc->readPC(), tid);
cpu->setNextPC(tc->readNextPC(), tid);
+ cpu->setNextNPC(tc->readNextNPC(), tid);
+ cpu->setMicroPC(tc->readMicroPC(), tid);
+ cpu->setNextMicroPC(tc->readNextMicroPC(), tid);
#if !FULL_SYSTEM
this->thread->funcExeInst = tc->readFuncExeInst();
#endif
@@ -450,6 +454,30 @@ O3ThreadContext<Impl>::setNextPC(uint64_t val)
template <class Impl>
void
+O3ThreadContext<Impl>::setMicroPC(uint64_t val)
+{
+ cpu->setMicroPC(val, thread->readTid());
+
+ // Squash if we're not already in a state update mode.
+ if (!thread->trapPending && !thread->inSyscall) {
+ cpu->squashFromTC(thread->readTid());
+ }
+}
+
+template <class Impl>
+void
+O3ThreadContext<Impl>::setNextMicroPC(uint64_t val)
+{
+ cpu->setNextMicroPC(val, thread->readTid());
+
+ // Squash if we're not already in a state update mode.
+ if (!thread->trapPending && !thread->inSyscall) {
+ cpu->squashFromTC(thread->readTid());
+ }
+}
+
+template <class Impl>
+void
O3ThreadContext<Impl>::setMiscRegNoEffect(int misc_reg, const MiscReg &val)
{
cpu->setMiscRegNoEffect(misc_reg, val, thread->readTid());
diff --git a/src/cpu/thread_context.hh b/src/cpu/thread_context.hh
index 31fdb42c2..0d09492ee 100644
--- a/src/cpu/thread_context.hh
+++ b/src/cpu/thread_context.hh
@@ -226,6 +226,14 @@ class ThreadContext
virtual void setNextNPC(uint64_t val) = 0;
+ virtual uint64_t readMicroPC() = 0;
+
+ virtual void setMicroPC(uint64_t val) = 0;
+
+ virtual uint64_t readNextMicroPC() = 0;
+
+ virtual void setNextMicroPC(uint64_t val) = 0;
+
virtual MiscReg readMiscRegNoEffect(int misc_reg) = 0;
virtual MiscReg readMiscReg(int misc_reg) = 0;
@@ -419,6 +427,14 @@ class ProxyThreadContext : public ThreadContext
void setNextNPC(uint64_t val) { actualTC->setNextNPC(val); }
+ uint64_t readMicroPC() { return actualTC->readMicroPC(); }
+
+ void setMicroPC(uint64_t val) { actualTC->setMicroPC(val); }
+
+ uint64_t readNextMicroPC() { return actualTC->readMicroPC(); }
+
+ void setNextMicroPC(uint64_t val) { actualTC->setMicroPC(val); }
+
MiscReg readMiscRegNoEffect(int misc_reg)
{ return actualTC->readMiscRegNoEffect(misc_reg); }