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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/sparc/lib/M7copy_from_user.S | |
| parent | Initial commit. (diff) | |
| download | linux-c109f8d9e922037b3fa45f46d78384d49db8ad76.tar.xz linux-c109f8d9e922037b3fa45f46d78384d49db8ad76.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sparc/lib/M7copy_from_user.S')
| -rw-r--r-- | arch/sparc/lib/M7copy_from_user.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/sparc/lib/M7copy_from_user.S b/arch/sparc/lib/M7copy_from_user.S new file mode 100644 index 000000000..66464b3e3 --- /dev/null +++ b/arch/sparc/lib/M7copy_from_user.S @@ -0,0 +1,40 @@ +/* + * M7copy_from_user.S: SPARC M7 optimized copy from userspace. + * + * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. + */ + + +#define EX_LD(x, y) \ +98: x; \ + .section __ex_table,"a"; \ + .align 4; \ + .word 98b, y; \ + .text; \ + .align 4; + +#define EX_LD_FP(x, y) \ +98: x; \ + .section __ex_table,"a"; \ + .align 4; \ + .word 98b, y##_fp; \ + .text; \ + .align 4; + +#ifndef ASI_AIUS +#define ASI_AIUS 0x11 +#endif + +#define FUNC_NAME M7copy_from_user +#define LOAD(type,addr,dest) type##a [addr] %asi, dest +#define EX_RETVAL(x) 0 + +#ifdef __KERNEL__ +#define PREAMBLE \ + rd %asi, %g1; \ + cmp %g1, ASI_AIUS; \ + bne,pn %icc, raw_copy_in_user; \ + nop +#endif + +#include "M7memcpy.S" |