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authorYi Li <yi.li@analog.com>2007-12-21 21:12:21 +0800
committerBryan Wu <bryan.wu@analog.com>2007-12-21 21:12:21 +0800
commitc50e19f49830fb651b4b702ad2c3abcdf110b576 (patch)
tree5ebce02ba1dd8d394982d83b9561493f9b0542a3
parenta5bb85dfffd38714d83cf7798886462d7314b90a (diff)
[Blackfin] arch: fix bug - make memcpy return the dest addr.
The memcpy() function returns the src pointer instead of the dst pointer. This patch fix this bug. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
-rw-r--r--arch/blackfin/lib/memcpy.S8
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/blackfin/lib/memcpy.S b/arch/blackfin/lib/memcpy.S
index 2e6336492b4..e654a18a075 100644
--- a/arch/blackfin/lib/memcpy.S
+++ b/arch/blackfin/lib/memcpy.S
@@ -70,8 +70,8 @@ ENTRY(_memcpy)
/* Check for aligned data.*/
R3 = R1 | R0;
- R0 = 0x3;
- R3 = R3 & R0;
+ R1 = 0x3;
+ R3 = R3 & R1;
CC = R3; /* low bits set on either address? */
IF CC JUMP .Lnot_aligned;
@@ -83,7 +83,6 @@ ENTRY(_memcpy)
/* less than eight bytes... */
P2 = R2;
LSETUP(.Lthree_start, .Lthree_end) LC0=P2;
- R0 = R1; /* setup src address for return */
.Lthree_start:
R3 = B[P1++] (X);
.Lthree_end:
@@ -95,7 +94,6 @@ ENTRY(_memcpy)
/* There's at least eight bytes to copy. */
P2 += -1; /* because we unroll one iteration */
LSETUP(.Lword_loops, .Lword_loope) LC0=P2;
- R0 = R1;
I1 = P1;
R3 = [I1++];
#if ANOMALY_05000202
@@ -120,7 +118,6 @@ ENTRY(_memcpy)
.Lnot_aligned:
/* From here, we're copying byte-by-byte. */
LSETUP (.Lbyte_start, .Lbyte_end) LC0=P2;
- R0 = R1; /* Save src address for return */
.Lbyte_start:
R1 = B[P1++] (X);
.Lbyte_end:
@@ -135,7 +132,6 @@ ENTRY(_memcpy)
* Don't bother to work out alignment for
* the reverse case.
*/
- R0 = R1; /* save src for later. */
P0 = P0 + P2;
P0 += -1;
P1 = P1 + P2;