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authorAli Saidi <saidi@eecs.umich.edu>2007-01-08 17:09:48 -0500
committerAli Saidi <saidi@eecs.umich.edu>2007-01-08 17:09:48 -0500
commit2f4239a68539916a3822fa76346f9487c39304f3 (patch)
tree6c61b875933efdf3ec5a0cae601c2caf9cbd010f /src/arch/sparc
parent4a8078192d77f60580a79762156124e6331ea310 (diff)
downloadgem5-2f4239a68539916a3822fa76346f9487c39304f3.tar.xz
fix softint and partially implement hstick interrupts need to figure out how to do the acutal interrupting still
src/arch/sparc/miscregfile.cc: fix softint and fprs in miscregfile --HG-- extra : convert_revision : cf98bd9c172e20f328f18e07dd05f63f37f14c87
Diffstat (limited to 'src/arch/sparc')
-rw-r--r--src/arch/sparc/miscregfile.cc10
-rw-r--r--src/arch/sparc/ua2005.cc24
2 files changed, 27 insertions, 7 deletions
diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc
index 68c6fa84a..c58a1fd09 100644
--- a/src/arch/sparc/miscregfile.cc
+++ b/src/arch/sparc/miscregfile.cc
@@ -327,7 +327,11 @@ MiscReg MiscRegFile::readRegWithEffect(int miscReg, ThreadContext * tc)
mbits(tick,63,63);
case MISCREG_FPRS:
warn("FPRS register read and FPU stuff not really implemented\n");
- return fprs;
+ // in legion if fp is enabled du and dl are set
+ if (fprs & 0x4)
+ return 0x7;
+ else
+ return 0;
case MISCREG_PCR:
case MISCREG_PIC:
panic("Performance Instrumentation not impl\n");
@@ -399,7 +403,7 @@ void MiscRegFile::setReg(int miscReg, const MiscReg &val)
gsr = val;
break;
case MISCREG_SOFTINT:
- softint |= val;
+ softint = val;
break;
case MISCREG_TICK_CMPR:
tick_cmpr = val;
@@ -637,6 +641,8 @@ void MiscRegFile::setRegWithEffect(int miscReg,
break;
case MISCREG_PIL:
case MISCREG_SOFTINT:
+ case MISCREG_SOFTINT_SET:
+ case MISCREG_SOFTINT_CLR:
case MISCREG_TICK_CMPR:
case MISCREG_STICK_CMPR:
case MISCREG_HINTP:
diff --git a/src/arch/sparc/ua2005.cc b/src/arch/sparc/ua2005.cc
index c7d2ffce5..1f7f65045 100644
--- a/src/arch/sparc/ua2005.cc
+++ b/src/arch/sparc/ua2005.cc
@@ -51,9 +51,9 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
break;
case MISCREG_SOFTINT_CLR:
- return setRegWithEffect(miscReg, ~val & softint, tc);
+ return setRegWithEffect(MISCREG_SOFTINT, ~val & softint, tc);
case MISCREG_SOFTINT_SET:
- return setRegWithEffect(miscReg, val | softint, tc);
+ return setRegWithEffect(MISCREG_SOFTINT, val | softint, tc);
case MISCREG_TICK_CMPR:
if (tickCompare == NULL)
@@ -119,11 +119,11 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
setReg(miscReg, val);
if ((hstick_cmpr & ~mask(63)) && hSTickCompare->scheduled())
hSTickCompare->deschedule();
- time = ((int64_t)(hstick_cmpr & mask(63)) + (int64_t)stick) -
+ time = ((int64_t)(hstick_cmpr & mask(63)) - (int64_t)stick) -
tc->getCpuPtr()->instCount();
if (!(hstick_cmpr & ~mask(63)) && time > 0)
hSTickCompare->schedule(curTick + time * tc->getCpuPtr()->cycles(1));
- warn ("writing to hsTICK compare register value %#X\n", val);
+ DPRINTF(Timer, "writing to hsTICK compare register value %#X\n", val);
break;
case MISCREG_HPSTATE:
@@ -213,6 +213,20 @@ MiscRegFile::processSTickCompare(ThreadContext *tc)
void
MiscRegFile::processHSTickCompare(ThreadContext *tc)
{
- panic("hstick compare not implemented\n");
+ // since our microcode instructions take two cycles we need to check if
+ // we're actually at the correct cycle or we need to wait a little while
+ // more
+ int ticks;
+ ticks = ((int64_t)(hstick_cmpr & mask(63)) - (int64_t)stick) -
+ tc->getCpuPtr()->instCount();
+ assert(ticks >= 0 && "hstick compare missed interrupt cycle");
+
+ if (ticks == 0) {
+ DPRINTF(Timer, "HSTick compare cycle reached at %#x\n",
+ (stick_cmpr & mask(63)));
+ tc->getCpuPtr()->checkInterrupts = true;
+ // Need to do something to cause interrupt to happen here !!! @todo
+ } else
+ sTickCompare->schedule(ticks * tc->getCpuPtr()->cycles(1) + curTick);
}