Changeset e80329d6 in mainline for kernel/arch/amd64/src/context.S

Timestamp:

2010-11-02T20:02:07Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

b5e68c8, e06ef614

Parents:

c75698b

Message:

Use shorter 32-bit instructions where possible.

File:

• kernel/arch/amd64/src/context.S (modified) (2 diffs)

kernel/arch/amd64/src/context.S

@@ -45 +45 @@
         CONTEXT_SAVE_ARCH_CORE %rdi %rdx
         
-        xorq %rax, %rax       # context_save returns 1
-        incq %rax
+        xorl %eax, %eax       # context_save returns 1
+        incl %eax
         ret
 
@@ -60 +60 @@
         movq %rdx, (%rsp)
         
-        xorq %rax, %rax       # context_restore returns 0
+        xorl %eax, %eax       # context_restore returns 0
         ret