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Revision 1.1, Mon Nov 22 13:46:28 2004 UTC (12 years, 11 months ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD 

Merge up to 2.4.28.
Merge of 2.4.x-xfs-melb:linux:20246a by kenmcd.

/* U3patch.S: Patch Ultra-I routines with Ultra-III variant.
 *
 * Copyright (C) 2004 David S. Miller <davem@redhat.com>
 */

#define BRANCH_ALWAYS	0x10680000
#define NOP		0x01000000
#define ULTRA3_DO_PATCH(OLD, NEW)	\
	sethi	%hi(NEW), %g1; \
	or	%g1, %lo(NEW), %g1; \
	sethi	%hi(OLD), %g2; \
	or	%g2, %lo(OLD), %g2; \
	sub	%g1, %g2, %g1; \
	sethi	%hi(BRANCH_ALWAYS), %g3; \
	srl	%g1, 2, %g1; \
	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
	or	%g3, %g1, %g3; \
	stw	%g3, [%g2]; \
	sethi	%hi(NOP), %g3; \
	or	%g3, %lo(NOP), %g3; \
	stw	%g3, [%g2 + 0x4]; \
	flush	%g2;

	.globl	cheetah_patch_copyops
cheetah_patch_copyops:
	ULTRA3_DO_PATCH(memcpy, U3memcpy)
	ULTRA3_DO_PATCH(___copy_from_user, U3copy_from_user)
	ULTRA3_DO_PATCH(___copy_to_user, U3copy_to_user)
	retl
	 nop