summaryrefslogtreecommitdiff
path: root/src/arch/sparc
diff options
context:
space:
mode:
authorLisa Hsu <hsul@eecs.umich.edu>2007-01-19 21:33:36 -0500
committerLisa Hsu <hsul@eecs.umich.edu>2007-01-19 21:33:36 -0500
commitf1aeaf7ceb44ea6ef7032048a68c74ecedc7685b (patch)
tree022b6bcfe7f925156afd756f91e8dfca1599dfcb /src/arch/sparc
parent5c9cbdbb4597a3ba6908a41c1dc459c25626e514 (diff)
downloadgem5-f1aeaf7ceb44ea6ef7032048a68c74ecedc7685b.tar.xz
some hstick and hintp changes.
src/arch/sparc/interrupts.hh: condition hstick matches on HINTP src/arch/sparc/miscregfile.cc: implement HINTP src/arch/sparc/ua2005.cc: don't post interrupt unless it is enabled. --HG-- extra : convert_revision : f71d1c1d9fd1a898ddafd5a885c3a8d5c75e8ff0
Diffstat (limited to 'src/arch/sparc')
-rw-r--r--src/arch/sparc/interrupts.hh22
-rw-r--r--src/arch/sparc/miscregfile.cc4
-rw-r--r--src/arch/sparc/ua2005.cc25
3 files changed, 33 insertions, 18 deletions
diff --git a/src/arch/sparc/interrupts.hh b/src/arch/sparc/interrupts.hh
index 879cd1825..99ddb4919 100644
--- a/src/arch/sparc/interrupts.hh
+++ b/src/arch/sparc/interrupts.hh
@@ -108,9 +108,11 @@ enum interrupts_t {
if (hpstate & HPSTATE::hpriv) {
if (ie) {
if (interrupts[hstick_match]) {
- interrupts[hstick_match] = false;
- --numPosted;
- return new HstickMatch;
+ if (tc->readMiscReg(MISCREG_HINTP) & 1) {
+ interrupts[hstick_match] = false;
+ --numPosted;
+ return new HstickMatch;
+ }
}
if (interrupts[interrupt_vector]) {
interrupts[interrupt_vector] = false;
@@ -118,9 +120,13 @@ enum interrupts_t {
//HAVEN'T IMPLed THIS YET
return NoFault;
}
+ } else {
+ if (interrupts[hstick_match]) {
+ return NoFault;
+ }
+
}
} else {
-
if (interrupts[trap_level_zero]) {
if ((pstate & HPSTATE::tlz) && (tc->readMiscReg(MISCREG_TL) == 0)) {
interrupts[trap_level_zero] = false;
@@ -129,9 +135,11 @@ enum interrupts_t {
}
}
if (interrupts[hstick_match]) {
- interrupts[hstick_match] = false;
- --numPosted;
- return new HstickMatch;
+ if (tc->readMiscReg(MISCREG_HINTP) & 1) {
+ interrupts[hstick_match] = false;
+ --numPosted;
+ return new HstickMatch;
+ }
}
if (ie) {
if (interrupts[cpu_mondo]) {
diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc
index 50f510289..d9fcb0280 100644
--- a/src/arch/sparc/miscregfile.cc
+++ b/src/arch/sparc/miscregfile.cc
@@ -214,7 +214,7 @@ MiscReg MiscRegFile::readReg(int miscReg)
case MISCREG_HTSTATE:
return htstate[tl-1];
case MISCREG_HINTP:
- panic("HINTP not implemented\n");
+ return hintp;
case MISCREG_HTBA:
return htba;
case MISCREG_HVER:
@@ -468,7 +468,7 @@ void MiscRegFile::setReg(int miscReg, const MiscReg &val)
htstate[tl-1] = val;
break;
case MISCREG_HINTP:
- panic("HINTP not implemented\n");
+ hintp = val;
case MISCREG_HTBA:
htba = val;
break;
diff --git a/src/arch/sparc/ua2005.cc b/src/arch/sparc/ua2005.cc
index b8a891c6d..6220e6dec 100644
--- a/src/arch/sparc/ua2005.cc
+++ b/src/arch/sparc/ua2005.cc
@@ -42,10 +42,7 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
switch (miscReg) {
/* Full system only ASRs */
case MISCREG_SOFTINT:
- // Check if we are going to interrupt because of something
- setReg(miscReg, val);
- tc->getCpuPtr()->checkInterrupts = true;
- tc->getCpuPtr()->post_interrupt(hstick_match);
+ setReg(miscReg, val);;
if (val != 0x10000 && val != 0)
warn("Writing to softint not really supported, writing: %#x\n", val);
break;
@@ -53,6 +50,8 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
case MISCREG_SOFTINT_CLR:
return setRegWithEffect(MISCREG_SOFTINT, ~val & softint, tc);
case MISCREG_SOFTINT_SET:
+ tc->getCpuPtr()->checkInterrupts = true;
+ tc->getCpuPtr()->post_interrupt(soft_interrupt);
return setRegWithEffect(MISCREG_SOFTINT, val | softint, tc);
case MISCREG_TICK_CMPR:
@@ -96,6 +95,9 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
case MISCREG_HVER:
panic("Shouldn't be writing HVER\n");
+ case MISCREG_HINTP:
+ setReg(miscReg, val);
+
case MISCREG_HTBA:
// clear lower 7 bits on writes.
setReg(miscReg, val & ULL(~0x7FFF));
@@ -204,9 +206,11 @@ MiscRegFile::processSTickCompare(ThreadContext *tc)
if (ticks == 0) {
DPRINTF(Timer, "STick compare cycle reached at %#x\n",
(stick_cmpr & mask(63)));
- tc->getCpuPtr()->post_interrupt(soft_interrupt);
- tc->getCpuPtr()->checkInterrupts = true;
- softint |= ULL(1) << 16;
+ if (!(tc->readMiscReg(MISCREG_STICK_CMPR) & (ULL(1) << 63))) {
+ tc->getCpuPtr()->post_interrupt(soft_interrupt);
+ tc->getCpuPtr()->checkInterrupts = true;
+ setRegWithEffect(MISCREG_SOFTINT, softint | (ULL(1) << 16), tc);
+ }
} else
sTickCompare->schedule(ticks * tc->getCpuPtr()->cycles(1) + curTick);
}
@@ -225,8 +229,11 @@ MiscRegFile::processHSTickCompare(ThreadContext *tc)
if (ticks == 0) {
DPRINTF(Timer, "HSTick compare cycle reached at %#x\n",
(stick_cmpr & mask(63)));
- tc->getCpuPtr()->post_interrupt(hstick_match);
- tc->getCpuPtr()->checkInterrupts = true;
+ if (!(tc->readMiscReg(MISCREG_HSTICK_CMPR) & (ULL(1) << 63))) {
+ setRegWithEffect(MISCREG_HINTP, 1, tc);
+ tc->getCpuPtr()->post_interrupt(hstick_match);
+ tc->getCpuPtr()->checkInterrupts = true;
+ }
// Need to do something to cause interrupt to happen here !!! @todo
} else
sTickCompare->schedule(ticks * tc->getCpuPtr()->cycles(1) + curTick);