sparc/lib/M7copy_from_user.S

0001 /*
0002  * M7copy_from_user.S: SPARC M7 optimized copy from userspace.
0003  *
0004  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
0005  */
0006
0007
0008 #define EX_LD(x, y)         \
0009 98: x;              \
0010     .section __ex_table,"a";    \
0011     .align 4;           \
0012     .word 98b, y;           \
0013     .text;              \
0014     .align 4;
0015
0016 #define EX_LD_FP(x, y)          \
0017 98: x;              \
0018     .section __ex_table,"a";    \
0019     .align 4;           \
0020     .word 98b, y##_fp;      \
0021     .text;              \
0022     .align 4;
0023
0024 #ifndef ASI_AIUS
0025 #define ASI_AIUS    0x11
0026 #endif
0027
0028 #define FUNC_NAME       M7copy_from_user
0029 #define LOAD(type,addr,dest)    type##a [addr] %asi, dest
0030 #define EX_RETVAL(x)        0
0031
0032 #ifdef __KERNEL__
0033 #define PREAMBLE                    \
0034     rd      %asi, %g1;          \
0035     cmp     %g1, ASI_AIUS;          \
0036     bne,pn      %icc, raw_copy_in_user;     \
0037      nop
0038 #endif
0039
0040 #include "M7memcpy.S"