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[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>
This commit is contained in:
Yi Li 2007-12-21 21:12:21 +08:00 committed by Bryan Wu
parent a5bb85dfff
commit c50e19f498
1 changed files with 2 additions and 6 deletions
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8
arch/blackfin/lib/memcpy.S
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@ -70,8 +70,8 @@ ENTRY(_memcpy)
/* Check for aligned data.*/ /* Check for aligned data.*/
R3 = R1 | R0; R3 = R1 | R0;
R0 = 0x3; R1 = 0x3;
R3 = R3 & R0; R3 = R3 & R1;
CC = R3; /* low bits set on either address? */ CC = R3; /* low bits set on either address? */
IF CC JUMP .Lnot_aligned; IF CC JUMP .Lnot_aligned;
@ -83,7 +83,6 @@ ENTRY(_memcpy)
/* less than eight bytes... */ /* less than eight bytes... */
P2 = R2; P2 = R2;
LSETUP(.Lthree_start, .Lthree_end) LC0=P2; LSETUP(.Lthree_start, .Lthree_end) LC0=P2;
R0 = R1; /* setup src address for return */
.Lthree_start: .Lthree_start:
R3 = B[P1++] (X); R3 = B[P1++] (X);
.Lthree_end: .Lthree_end:
@ -95,7 +94,6 @@ ENTRY(_memcpy)
/* There's at least eight bytes to copy. */ /* There's at least eight bytes to copy. */
P2 += -1; /* because we unroll one iteration */ P2 += -1; /* because we unroll one iteration */
LSETUP(.Lword_loops, .Lword_loope) LC0=P2; LSETUP(.Lword_loops, .Lword_loope) LC0=P2;
R0 = R1;
I1 = P1; I1 = P1;
R3 = [I1++]; R3 = [I1++];
#if ANOMALY_05000202 #if ANOMALY_05000202
@ -120,7 +118,6 @@ ENTRY(_memcpy)
.Lnot_aligned: .Lnot_aligned:
/* From here, we're copying byte-by-byte. */ /* From here, we're copying byte-by-byte. */
LSETUP (.Lbyte_start, .Lbyte_end) LC0=P2; LSETUP (.Lbyte_start, .Lbyte_end) LC0=P2;
R0 = R1; /* Save src address for return */
.Lbyte_start: .Lbyte_start:
R1 = B[P1++] (X); R1 = B[P1++] (X);
.Lbyte_end: .Lbyte_end:
@ -135,7 +132,6 @@ ENTRY(_memcpy)
* Don't bother to work out alignment for * Don't bother to work out alignment for
* the reverse case. * the reverse case.
*/ */
R0 = R1; /* save src for later. */
P0 = P0 + P2; P0 = P0 + P2;
P0 += -1; P0 += -1;
P1 = P1 + P2; P1 = P1 + P2;