1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 326 unchanged lines hidden (view full) ---

335 tc->setMiscReg(MISCREG_HTSTATE, HPSTATE);
336
337 //TT = trap type;
338 tc->setMiscReg(MISCREG_TT, tt);
339
340 //Update GL
341 tc->setMiscRegWithEffect(MISCREG_GL, min<int>(GL+1, MaxGL));
342
343 PSTATE = mbits(PSTATE, 2, 2); // just save the priv bit
344 PSTATE |= (1 << 4); //set PSTATE.pef to 1
345 tc->setMiscReg(MISCREG_PSTATE, PSTATE);
346
347 //set HPSTATE.red to 1
348 HPSTATE |= (1 << 5);
349 //set HPSTATE.hpriv to 1
350 HPSTATE |= (1 << 2);
351 //set HPSTATE.ibe to 0
352 HPSTATE &= ~(1 << 10);

--- 70 unchanged lines hidden (view full) ---

423
424 //Update the global register level
425 if (!gotoHpriv)
426 tc->setMiscRegWithEffect(MISCREG_GL, min<int>(GL+1, MaxPGL));
427 else
428 tc->setMiscRegWithEffect(MISCREG_GL, min<int>(GL+1, MaxGL));
429
430 //PSTATE.mm is unchanged
431 PSTATE |= (1 << 4); //PSTATE.pef = whether or not an fpu is present
432 PSTATE &= ~(1 << 3); //PSTATE.am = 0
433 PSTATE &= ~(1 << 1); //PSTATE.ie = 0
434 //PSTATE.tle is unchanged
435 //PSTATE.tct = 0
436
437 if (gotoHpriv)
438 {
439 PSTATE &= ~(1 << 9); // PSTATE.cle = 0
440 //The manual says PSTATE.priv should be 0, but Legion leaves it alone
441 HPSTATE &= ~(1 << 5); //HPSTATE.red = 0
442 HPSTATE |= (1 << 2); //HPSTATE.hpriv = 1
443 HPSTATE &= ~(1 << 10); //HPSTATE.ibe = 0
444 //HPSTATE.tlz is unchanged
445 tc->setMiscReg(MISCREG_HPSTATE, HPSTATE);
446 } else { // we are going to priv
447 PSTATE |= (1 << 2); //PSTATE.priv = 1
448 replaceBits(PSTATE, 9, 9, PSTATE >> 8); //PSTATE.cle = PSTATE.tle
449 }
450 tc->setMiscReg(MISCREG_PSTATE, PSTATE);
451
452
453 bool changedCWP = true;
454 if (tt == 0x24)
455 CWP++;
456 else if (0x80 <= tt && tt <= 0xbf)
457 CWP += (CANSAVE + 2);
458 else if (0xc0 <= tt && tt <= 0xff)
459 CWP--;
460 else

--- 208 unchanged lines hidden ---