powerpc/kernel/head_85xx.S

297  *   r10 -- EA of fault
305  *   r10 is the pshift from the PGD, if we're a hugepage
310 	rlwinm	r12, r10, 13, 19, 29;	/* Compute pgdir/pmd offset */	\
316 	andi.	r10, r11, HUGEPD_SHIFT_MASK@l; /* extract size field */	\
317 	xor	r12, r10, r11;		/* drop size bits from pointer */ \
319 1000:	rlwimi	r12, r10, 23, 20, 28;	/* Compute pte address */	\
320 	li	r10, 0;			/* clear r10 */			\
324 	rlwinm	r12, r10, 13, 19, 29;	/* Compute pgdir/pmd offset */	\
328 	rlwimi	r12, r10, 23, 20, 28;	/* Compute pte address */	\
333 	rlwimi	r11, r10, 12, 20, 29;	/* Create L1 (pgdir/pmd) address */	\
337 	rlwimi	r12, r10, 22, 20, 29;	/* Compute PTE address */		\
372 	andis.	r10,r5,(ESR_ILK|ESR_DLK)@h
424 	mtspr	SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
425 	mfspr	r10, SPRN_SPRG_THREAD
426 	stw	r11, THREAD_NORMSAVE(0)(r10)
432 	stw	r12, THREAD_NORMSAVE(1)(r10)
433 	stw	r13, THREAD_NORMSAVE(2)(r10)
435 	stw	r13, THREAD_NORMSAVE(3)(r10)
439 	andi. r10,r11,MSR_PR
441 	BTB_FLUSH(r10)
444 	mfspr	r10, SPRN_DEAR		/* Get faulting address */
450 	cmplw	5, r10, r11
515 	mfspr	r10, SPRN_SPRG_THREAD
516 	lwz	r11, THREAD_NORMSAVE(3)(r10)
518 	lwz	r13, THREAD_NORMSAVE(2)(r10)
519 	lwz	r12, THREAD_NORMSAVE(1)(r10)
520 	lwz	r11, THREAD_NORMSAVE(0)(r10)
521 	mfspr	r10, SPRN_SPRG_RSCRATCH0
531 	mtspr	SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
532 	mfspr	r10, SPRN_SPRG_THREAD
533 	stw	r11, THREAD_NORMSAVE(0)(r10)
539 	stw	r12, THREAD_NORMSAVE(1)(r10)
540 	stw	r13, THREAD_NORMSAVE(2)(r10)
542 	stw	r13, THREAD_NORMSAVE(3)(r10)
546 	andi. r10,r11,MSR_PR
548 	BTB_FLUSH(r10)
552 	mfspr	r10, SPRN_SRR0		/* Get faulting address */
558 	cmplw	5, r10, r11
617 	mfspr	r10, SPRN_SPRG_THREAD
618 	lwz	r11, THREAD_NORMSAVE(3)(r10)
620 	lwz	r13, THREAD_NORMSAVE(2)(r10)
621 	lwz	r12, THREAD_NORMSAVE(1)(r10)
622 	lwz	r11, THREAD_NORMSAVE(0)(r10)
623 	mfspr	r10, SPRN_SPRG_RSCRATCH0
696  *	r10 - tsize encoding (if HUGETLB_PAGE) or available to use
707 	cmpwi	6, r10, 0			/* check for huge page */
750 	 * Calc MAS1_TSIZE from r10 (which has pshift encoded)
753 	subi	r15, r10, 10
759 	mr	r14, r10
774 	andi.	r10, r11, _PAGE_DIRTY
776 	li	r10, MAS3_SW | MAS3_UW
777 	andc	r12, r12, r10
782 	srwi	r10, r13, 12		/* grab RPN[12:31] */
783 	mtspr	SPRN_MAS7, r10
786 	li	r10, (_PAGE_EXEC | _PAGE_READ)
788 	rlwimi	r10, r11, 31, 29, 29	/* extract _PAGE_DIRTY into SW */
789 	and	r12, r11, r10
791 	slwi	r10, r12, 1
792 	or	r10, r10, r12
793 	rlwinm	r10, r10, 0, ~_PAGE_EXEC	/* Clear SX on user pages */
794 	isellt	r12, r10, r12
819 	mfspr	r10, SPRN_SPRG_THREAD
822 	lwz	r14, THREAD_NORMSAVE(4)(r10)
823 	lwz	r15, THREAD_NORMSAVE(5)(r10)
824 	lwz	r16, THREAD_NORMSAVE(6)(r10)
825 	lwz	r17, THREAD_NORMSAVE(7)(r10)
827 8:	lwz	r11, THREAD_NORMSAVE(3)(r10)
829 	lwz	r13, THREAD_NORMSAVE(2)(r10)
830 	lwz	r12, THREAD_NORMSAVE(1)(r10)
831 	lwz	r11, THREAD_NORMSAVE(0)(r10)
832 	mfspr	r10, SPRN_SPRG_RSCRATCH0
855 	li	r10,THREAD_ACC
857 	evlddx	evr4,r10,r5
859 	REST_32EVRS(0,r10,r5,THREAD_EVR0)
902 	li	r10,1024
903 	slw	r10,r10,r9		/* r10 = page size */
904 	addi	r10,r10,-1
905 	and	r11,r3,r10		/* r11 = page offset */
906 	andc	r4,r12,r10		/* r4 = page base */