From b46aa884354451fdf642ea836e3442d4179e73fb Mon Sep 17 00:00:00 2001 From: Ali Saidi Date: Thu, 4 Jan 2007 20:22:45 -0500 Subject: Fix stick compare to work correctly and set checkInterrupts to true at the appropriate time turn warnings into dprintfs src/arch/sparc/miscregfile.cc: turn dprintfn into dprintfs --HG-- extra : convert_revision : cd313e9037c8f040d837de4c7ddbcf98534e60ad --- src/arch/sparc/ua2005.cc | 35 +++++++++++++++++++++++++---------- 1 file changed, 25 insertions(+), 10 deletions(-) (limited to 'src/arch/sparc/ua2005.cc') diff --git a/src/arch/sparc/ua2005.cc b/src/arch/sparc/ua2005.cc index 0db5f6acc..66d699fce 100644 --- a/src/arch/sparc/ua2005.cc +++ b/src/arch/sparc/ua2005.cc @@ -64,19 +64,20 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val, time = (tick_cmpr & mask(63)) - (tick & mask(63)); if (!(tick_cmpr & ~mask(63)) && time > 0) tickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); - warn ("writing to TICK compare register %#X\n", val); + panic("writing to TICK compare register %#X\n", val); break; case MISCREG_STICK_CMPR: if (sTickCompare == NULL) sTickCompare = new STickCompareEvent(this, tc); setReg(miscReg, val); - if ((stick_cmpr & mask(63)) && sTickCompare->scheduled()) + if ((stick_cmpr & ~mask(63)) && sTickCompare->scheduled()) sTickCompare->deschedule(); - time = (stick_cmpr & mask(63)) - (stick & mask(63)); + time = ((int64_t)(stick_cmpr & mask(63)) + (int64_t)stick) - + tc->getCpuPtr()->instCount(); if (!(stick_cmpr & ~mask(63)) && time > 0) - sTickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); - warn ("writing to sTICK compare register value %#X\n", val); + sTickCompare->schedule(time * tc->getCpuPtr()->cycles(1) + curTick); + DPRINTF(Timer, "writing to sTICK compare register value %#X\n", val); break; case MISCREG_PSTATE: @@ -116,11 +117,12 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val, if (hSTickCompare == NULL) hSTickCompare = new HSTickCompareEvent(this, tc); setReg(miscReg, val); - if ((hstick_cmpr & mask(63)) && hSTickCompare->scheduled()) + if ((hstick_cmpr & ~mask(63)) && hSTickCompare->scheduled()) hSTickCompare->deschedule(); - time = (hstick_cmpr & mask(63)) - (stick & mask(63)); + time = ((int64_t)(hstick_cmpr & mask(63)) + (int64_t)stick) - + tc->getCpuPtr()->instCount(); if (!(hstick_cmpr & ~mask(63)) && time > 0) - hSTickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); + hSTickCompare->schedule(curTick + time * tc->getCpuPtr()->cycles(1)); warn ("writing to hsTICK compare register value %#X\n", val); break; @@ -191,12 +193,25 @@ MiscRegFile::processTickCompare(ThreadContext *tc) void MiscRegFile::processSTickCompare(ThreadContext *tc) { - panic("tick 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 = (stick_cmpr & mask(63)) - tc->getCpuPtr()->instCount(); + assert(ticks >= 0 && "stick compare missed interrupt cycle"); + + if (ticks == 0) { + DPRINTF(Timer, "STick compare cycle reached at %#x\n", + (stick_cmpr & mask(63))); + tc->getCpuPtr()->checkInterrupts = true; + + } else + sTickCompare->schedule(ticks * tc->getCpuPtr()->cycles(1) + curTick); } void MiscRegFile::processHSTickCompare(ThreadContext *tc) { - panic("tick compare not implemented\n"); + panic("hstick compare not implemented\n"); } -- cgit v1.2.3