diff options
| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-02-20 19:14:29 +0100 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-02-20 19:14:29 +0100 |
| commit | 921df2f336840cff8e25d11f85b44a6b274b9902 (patch) | |
| tree | 08ac140e1f92e4ced28c0cc9b97f62cf0dd2bd68 /debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch | |
| parent | 7faa9f6b5433cfc2ad154ea8be59623fc48a9f23 (diff) | |
add patch series
Diffstat (limited to 'debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch')
| -rw-r--r-- | debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch b/debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch new file mode 100644 index 0000000..6e5b6a9 --- /dev/null +++ b/debian/patches/0003-i386-drop-needless-instruction-from-copyout.patch @@ -0,0 +1,35 @@ +From 5bf4c1cb311ade33ea2c4b3706f7c6a42917b008 Mon Sep 17 00:00:00 2001 +From: Justus Winter <4winter@informatik.uni-hamburg.de> +Date: Fri, 20 Feb 2015 19:03:20 +0100 +Subject: [PATCH gnumach 3/4] i386: drop needless instruction from `copyout' + +* i386/i386/locore.S (copyout): Do not needlessly copy length to %eax +first. +--- + i386/i386/locore.S | 5 ++--- + 1 file changed, 2 insertions(+), 3 deletions(-) + +diff --git a/i386/i386/locore.S b/i386/i386/locore.S +index 15715f6..2e04bb8 100644 +--- a/i386/i386/locore.S ++++ b/i386/i386/locore.S +@@ -1297,14 +1297,13 @@ Entry(copyoutmsg) + jbe copyout_retry /* Use slow version on i386 */ + #endif /* !defined(MACH_HYP) && !PAE */ + +- movl %edx,%eax /* use count */ + /*cld*/ /* count up: always this way in GCC code */ +- movl %eax,%ecx /* move by longwords first */ ++ movl %edx,%ecx /* move by longwords first */ + shrl $2,%ecx + RECOVER(copyout_fail) + rep + movsl +- movl %eax,%ecx /* now move remaining bytes */ ++ movl %edx,%ecx /* now move remaining bytes */ + andl $3,%ecx + RECOVER(copyout_fail) + rep +-- +2.1.4 + |