ia64/kernel/ivt.S

82 	mov r19=n;;			/* prepare to save predicates */		\
121 	mov r19=IA64_KR(PT_BASE)		// get page table base address
139 (p7)	dep r17=r17,r19,(PAGE_SHIFT-3),3	// put region number bits in place
142 	LOAD_PHYSICAL(p6, r19, swapper_pg_dir)	// region 5 is rooted at swapper_pg_dir
148 (p6)	dep r17=r18,r19,3,(PAGE_SHIFT-3)	// r17=pgd_offset for region 5
173 	shr.u r19=r22,PAGE_SHIFT		// shift pte index into position
176 	dep r21=r19,r20,3,(PAGE_SHIFT-3)	// r21=pte_offset(pmd,addr)
179 	MOV_FROM_ISR(r19)			// cr.isr bit 32 tells us if this is an insn miss
184 (p7)	tbit.nz.unc p10,p11=r19,32		// is it an instruction TLB miss?
228 	ld8 r19=[r28]				// read *pud again
234 	cmp.ne.or.andcm p6,p7=r19,r29		// did *pud change
272 	ITC_I(p0, r18, r19)
281 	ld8 r19=[r17]				// read *pte again and see if same
284 	cmp.ne p7,p0=r18,r19
316 	ITC_D(p0, r18, r19)
325 	ld8 r19=[r17]				// read *pte again and see if same
328 	cmp.ne p7,p0=r18,r19
344 	movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
359 	and r19=r19,r16		// clear ed, reserved bits, and PTE control bits
364 	or r19=r17,r19		// insert PTE control bits into r19
366 	or r19=r19,r18		// set bit 4 (uncached) if the access was to region 6
369 	ITC_I(p0, r19, r18)	// insert the TLB entry
382 	movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
405 (p10)	mov r19=IA64_KR(PER_CPU_DATA)
406 (p11)	and r19=r19,r16				// clear non-ppn fields
412 (p10)	sub r19=r19,r26
421 	or r19=r19,r17		// insert PTE control bits into r19
424 	ITC_D(p7, r19, r18)	// insert the TLB entry
456 	mov r19=IA64_KR(PT_BASE)		// get the page table base address
469 (p7)	dep r17=r17,r19,(PAGE_SHIFT-3),3	// put region number bits in place
472 	LOAD_PHYSICAL(p6, r19, swapper_pg_dir)	// region 5 is rooted at swapper_pg_dir
478 (p6)	dep r17=r18,r19,3,(PAGE_SHIFT-3)	// r17=pgd_offset for region 5
501 	shr.u r19=r22,PAGE_SHIFT		// shift pte index into position
504 	dep r17=r19,r17,3,(PAGE_SHIFT-3)	// r17=pte_offset(pmd,addr);
738 	mov r19=b6				// I0 (2 cyc)
829 	ld8 r19=[r17],TI_AC_UTIME-TI_AC_LEAVE	// M  time at leave
833 	sub r22=r19,r18				// A  stime before leave
836 	sub r18=r30,r19				// A  elapsed time in user
946 	st8 [r1]=r19				// save b6
950 	alloc r19=ar.pfs,8,0,0,0		// ensure in0-in7 are writable
965 	dep r19=0,r19,38,26			// clear all bits but 0..37 [I0]
969 	st8 [r16]=r19,PT(AR_RNAT)-PT(CR_IFS)	// store ar.pfs.pfm in cr.ifs
970 	extr.u r11=r19,7,7	// I0		// get sol of ar.pfs
971 	and r8=0x7f,r19		// A		// get sof of ar.pfs
1062 	ld8 r19=[r17],TI_AC_UTIME-TI_AC_LEAVE	// time at left from kernel
1066 	sub r22=r19,r18				// stime before leave kernel
1069 	sub r18=r20,r19				// elapsed time in user mode
1173 	mov r19=24		// fault number
1186 	mov r19=25
1244 	MOV_TO_IIP(r17, r19)
1248 	MOV_TO_IPSR(p0, r16, r19)