Changeset f58af46 in mainline for arch/mips32/src/asm.S

Timestamp:

2006-05-05T15:14:34Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c6c59ccd

Parents:

e8194664

Message:

Implemented mips memcpy (copy from gcc builtin memcpy).

File:

• arch/mips32/src/asm.S (modified) (1 diff)

arch/mips32/src/asm.S

@@ -67 +67 @@
 memcpy_from_uspace:
 memcpy_to_uspace:
-        j _memcpy
-        nop
+        srl     $t1,$a2,0x2
+        beqz    $t1,1f
+        move    $t0,$zero
+        move    $a3,$zero
+2:      
+        addu    $v0,$a1,$a3
+        lw      $v1,0($v0)
+        addiu   $t0,$t0,1
+        addu    $v0,$a0,$a3
+        sw      $v1,0($v0)
+        bne     $t0,$t1,2b
+        addiu   $a3,$a3,4
+1:      
+        andi    $a2,$a2,0x3
+        beqz    $a2,3f
+        move    $a3,$zero
+        sll     $v0,$t0,0x2
+        addu    $t1,$a0,$v0
+        addu    $t0,$v0,$a1
+4:      
+        addu    $v0,$t0,$a3
+        lbu     $a0,0($v0)
+        addu    $v1,$t1,$a3
+        addiu   $a3,$a3,1
+        bne     $a3,$a2,4b
+        sb      $a0,0($v1)
+3:      
+        jr      $ra
+        move    $v0,$a1
 
 memcpy_from_uspace_failover_address:
 memcpy_to_uspace_failover_address:
-        j memcpy_from_uspace_failover_address
-        nop
+        jr      $ra
+        move    $v0, $zero