lkml.org 
[lkml]   [2016]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v2 12/13] sparc32: debride memcpy.S a bit
    Date
    From: Al Viro <viro@zeniv.linux.org.uk>

    unreachable code, unused macros...

    Acked-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
    ---
    arch/sparc/lib/memcpy.S | 79 -------------------------------------------------
    1 file changed, 79 deletions(-)

    diff --git a/arch/sparc/lib/memcpy.S b/arch/sparc/lib/memcpy.S
    index d3626cd..8913fea 100644
    --- a/arch/sparc/lib/memcpy.S
    +++ b/arch/sparc/lib/memcpy.S
    @@ -59,88 +59,9 @@ x:
    stb %t0, [%dst - (offset) - 0x02]; \
    stb %t1, [%dst - (offset) - 0x01];

    -/* Both these macros have to start with exactly the same insn */
    -#define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
    - ldd [%src - (offset) - 0x20], %t0; \
    - ldd [%src - (offset) - 0x18], %t2; \
    - ldd [%src - (offset) - 0x10], %t4; \
    - ldd [%src - (offset) - 0x08], %t6; \
    - st %t0, [%dst - (offset) - 0x20]; \
    - st %t1, [%dst - (offset) - 0x1c]; \
    - st %t2, [%dst - (offset) - 0x18]; \
    - st %t3, [%dst - (offset) - 0x14]; \
    - st %t4, [%dst - (offset) - 0x10]; \
    - st %t5, [%dst - (offset) - 0x0c]; \
    - st %t6, [%dst - (offset) - 0x08]; \
    - st %t7, [%dst - (offset) - 0x04];
    -
    -#define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
    - ldd [%src - (offset) - 0x20], %t0; \
    - ldd [%src - (offset) - 0x18], %t2; \
    - ldd [%src - (offset) - 0x10], %t4; \
    - ldd [%src - (offset) - 0x08], %t6; \
    - std %t0, [%dst - (offset) - 0x20]; \
    - std %t2, [%dst - (offset) - 0x18]; \
    - std %t4, [%dst - (offset) - 0x10]; \
    - std %t6, [%dst - (offset) - 0x08];
    -
    -#define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
    - ldd [%src + (offset) + 0x00], %t0; \
    - ldd [%src + (offset) + 0x08], %t2; \
    - st %t0, [%dst + (offset) + 0x00]; \
    - st %t1, [%dst + (offset) + 0x04]; \
    - st %t2, [%dst + (offset) + 0x08]; \
    - st %t3, [%dst + (offset) + 0x0c];
    -
    -#define RMOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
    - ldub [%src + (offset) + 0x00], %t0; \
    - ldub [%src + (offset) + 0x01], %t1; \
    - stb %t0, [%dst + (offset) + 0x00]; \
    - stb %t1, [%dst + (offset) + 0x01];
    -
    -#define SMOVE_CHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \
    - ldd [%src + (offset) + 0x00], %t0; \
    - ldd [%src + (offset) + 0x08], %t2; \
    - srl %t0, shir, %t5; \
    - srl %t1, shir, %t6; \
    - sll %t0, shil, %t0; \
    - or %t5, %prev, %t5; \
    - sll %t1, shil, %prev; \
    - or %t6, %t0, %t0; \
    - srl %t2, shir, %t1; \
    - srl %t3, shir, %t6; \
    - sll %t2, shil, %t2; \
    - or %t1, %prev, %t1; \
    - std %t4, [%dst + (offset) + (offset2) - 0x04]; \
    - std %t0, [%dst + (offset) + (offset2) + 0x04]; \
    - sll %t3, shil, %prev; \
    - or %t6, %t2, %t4;
    -
    -#define SMOVE_ALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \
    - ldd [%src + (offset) + 0x00], %t0; \
    - ldd [%src + (offset) + 0x08], %t2; \
    - srl %t0, shir, %t4; \
    - srl %t1, shir, %t5; \
    - sll %t0, shil, %t6; \
    - or %t4, %prev, %t0; \
    - sll %t1, shil, %prev; \
    - or %t5, %t6, %t1; \
    - srl %t2, shir, %t4; \
    - srl %t3, shir, %t5; \
    - sll %t2, shil, %t6; \
    - or %t4, %prev, %t2; \
    - sll %t3, shil, %prev; \
    - or %t5, %t6, %t3; \
    - std %t0, [%dst + (offset) + (offset2) + 0x00]; \
    - std %t2, [%dst + (offset) + (offset2) + 0x08];
    -
    .text
    .align 4

    -0:
    - retl
    - nop ! Only bcopy returns here and it retuns void...
    -
    FUNC(memmove)
    EXPORT_SYMBOL(memmove)
    cmp %o0, %o1
    --
    2.1.4
    \
     
     \ /
      Last update: 2016-02-03 22:41    [W:4.132 / U:0.044 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site