summaryrefslogtreecommitdiff
path: root/arch/sparc/lib
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2011-10-19 15:31:55 -0700
committerDavid S. Miller <davem@davemloft.net>2011-10-20 15:17:23 -0700
commita52312b88c8103e965979a79a07f6b34af82ca4b (patch)
tree65b96c797317eb83ea5779b360cc24227c6d8f89 /arch/sparc/lib
parent21f74d361dfd6a7d0e47574e315f780d8172084a (diff)
downloadlinux-a52312b88c8103e965979a79a07f6b34af82ca4b.tar.gz
sparc32: Correct the return value of memcpy.
Properly return the original destination buffer pointer. Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Kjetil Oftedal <oftedal@gmail.com>
Diffstat (limited to 'arch/sparc/lib')
-rw-r--r--arch/sparc/lib/memcpy.S22
1 files changed, 7 insertions, 15 deletions
diff --git a/arch/sparc/lib/memcpy.S b/arch/sparc/lib/memcpy.S
index 90a598846bab..4d8c497517bd 100644
--- a/arch/sparc/lib/memcpy.S
+++ b/arch/sparc/lib/memcpy.S
@@ -13,14 +13,6 @@
.align 4; \
x:
-
-/* In kernel these functions don't return a value.
- * One should use macros in asm/string.h for that purpose.
- * We return 0, so that bugs are more apparent.
- */
-#define SETUP_RETL
-#define RETL_INSN clr %o0
-
/* Both these macros have to start with exactly the same insn */
#define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
ldd [%src + (offset) + 0x00], %t0; \
@@ -154,7 +146,7 @@ FUNC(__memmove)
#endif
FUNC(memmove)
cmp %o0, %o1
- SETUP_RETL
+ mov %o0, %g7
bleu 9f
sub %o0, %o1, %o4
@@ -178,7 +170,7 @@ FUNC(memmove)
sub %o0, 1, %o0
retl
- RETL_INSN
+ mov %g7, %o0
/* NOTE: This code is executed just for the cases,
where %src (=%o1) & 3 is != 0.
@@ -212,7 +204,7 @@ FUNC(memmove)
FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
sub %o0, %o1, %o4
- SETUP_RETL
+ mov %o0, %g7
9:
andcc %o4, 3, %o5
0:
@@ -308,7 +300,7 @@ FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
stb %g2, [%o0]
1:
retl
- RETL_INSN
+ mov %g7, %o0
82: /* ldd_std */
MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
@@ -373,7 +365,7 @@ FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
stb %g2, [%o0]
1:
retl
- RETL_INSN
+ mov %g7, %o0
86: /* non_aligned */
cmp %o2, 6
@@ -498,7 +490,7 @@ FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
stb %g2, [%i0 + 4]
1:
ret
- restore %g0, %g0, %o0
+ restore %g7, %g0, %o0
88: /* short_end */
@@ -529,7 +521,7 @@ FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
stb %g2, [%o0]
1:
retl
- RETL_INSN
+ mov %g7, %o0
90: /* short_aligned_end */
bne 88b