alpha/palcode/osfpal.S

431         mtpr	r22, pt5		// Get some scratch space. E1.
434         sll     r8, (64-((2*page_seg_size_bits)+page_offset_size_bits)), r22  // Clean off upper bits of VA
437         srl    	r22, 61-page_seg_size_bits, r22 // Get Va<seg1>*8
441         addq    r21, r22, r21           // Index into page table for level 2 PTE.
443         sll    	r8, (64-((1*page_seg_size_bits)+page_offset_size_bits)), r22  // Clean off upper bits of VA
446         srl    	r22, 61-page_seg_size_bits, r22	// Get Va<seg1>*8
452         addq    r21, r22, r21           // Index into page table for level 3 PTE.
459         mfpr	r22, pt5		// Restore scratch register
1189         srl	r22, osfpcb_v_pme, r22	// get pme down to bit 0
1194         and	r22, 1, r22
1197         sll	r22, icsr_v_pmp, r22
1200         or	r25, r22, r25		// icsr with new pme
1497 //	r22	available
1500 //	pt5  	saved r22
1510         mfpr	r22, exc_addr		// get the pc
1512         lda	r22, 4(r22)		// inc the pc
1516         mtpr	r22, exc_addr		// set for rei
1519         mfpr	r22, pt5		// restore regs
1804         SAVE_GPR(r22,CNS_Q_GPR+0xB0,r1)
2279         RESTORE_GPR(r22,CNS_Q_GPR+0xB0,r1)
2784 //	Final value of t0 (r1), t8..t10 (r22..r24) and a0 (r16)
2867         ldq_p	r22, osfpcb_q_fen(r16)	// get new fen/pme
2883         and	r22, 1, r12		// isolate fen
2941 CALL_PAL_tbi_10_: cmpult	r16, 6, r22		// see if in range
2944         blbc	r22, CALL_PAL_tbi_30_		// go rei, if not
2965 //       r22, r23 trashed
2970         cmpult	r17, 6, r22			// see if in range
2974         blbc	r22, CALL_PAL_wrent_30_		// go rei, if not in range
2996 //	t8 (r22) is scratch
3002         mfpr	r22, pt_intmask		// get int mask
3004         extbl	r22, r16, r22		// get mask for this ipl
3008         mtpr	r22, ev5__ipl		// set new mask
3400 //	t8 - t10 (r22-r24) trashed
3408         mfpr	r22, pt_ksp		// get ksp
3423         lda	sp, 0-osfsf_c_size(r22)// set new sp