kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

sparc32: debride memcpy.S a bit

Browse source 
unreachable code, unused macros...

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-01-17 21:16:45 -05:00
parent 70a6fcf328
commit fb2e6fdbbd
1 changed files with 0 additions and 79 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

79
arch/sparc/lib/memcpy.S
View file

@ -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