Changeset d9430f7 in mainline

Timestamp:

2005-09-18T21:43:11Z (19 years ago)

Author:

Sergey Bondari <bondari@…>

Branches:

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

Children:

a2dc632

Parents:

104dc0b

Message:

I think some comments to the algoritm would be helful

File:

• arch/ia32/include/asm.h (modified) (1 diff)

arch/ia32/include/asm.h

@@ -230 +230 @@
         
         __asm__ __volatile__(
+                /* copy all full dwords */
                 "rep movsl\n\t"
+                /* load count again */
                 "movl %4, %%ecx\n\t"
+                /* ecx = ecx mod 4 */
                 "andl $3, %%ecx\n\t"
+                /* are there last <=3 bytes? */
                 "jz 1f\n\t"
+                /* copy last <=3 bytes */
                 "rep movsb\n\t"
+                /* exit from asm block */
                 "1:\n"
                 : "=&c" (d0), "=&D" (d1), "=&S" (d2)