From 478b8fecda511942404ac232897a718cecd13e48 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Wed, 3 Dec 2008 03:10:25 -0800 Subject: sparc,sparc64: unify lib/ o Renamed files in sparc64 to _64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller --- arch/sparc/lib/U1copy_from_user.S | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 arch/sparc/lib/U1copy_from_user.S (limited to 'arch/sparc/lib/U1copy_from_user.S') diff --git a/arch/sparc/lib/U1copy_from_user.S b/arch/sparc/lib/U1copy_from_user.S new file mode 100644 index 000000000000..3192b0bf4fab --- /dev/null +++ b/arch/sparc/lib/U1copy_from_user.S @@ -0,0 +1,33 @@ +/* U1copy_from_user.S: UltraSparc-I/II/IIi/IIe optimized copy from userspace. + * + * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) + */ + +#define EX_LD(x) \ +98: x; \ + .section .fixup; \ + .align 4; \ +99: retl; \ + mov 1, %o0; \ + .section __ex_table,"a";\ + .align 4; \ + .word 98b, 99b; \ + .text; \ + .align 4; + +#define FUNC_NAME ___copy_from_user +#define LOAD(type,addr,dest) type##a [addr] %asi, dest +#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS, dest +#define EX_RETVAL(x) 0 + + /* Writing to %asi is _expensive_ so we hardcode it. + * Reading %asi to check for KERNEL_DS is comparatively + * cheap. + */ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, memcpy_user_stub; \ + nop; \ + +#include "U1memcpy.S" -- cgit