Changeset 36b209a in mainline for arch/amd64/include/asm.h

Timestamp:

2005-09-03T07:11:10Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

82a80d3

Parents:

89344d85

Message:

Added volatile to inb/outb, so that it does not optimeze
lot of things out anymore.
Working delay loop.

File:

• arch/amd64/include/asm.h (modified) (4 diffs)

arch/amd64/include/asm.h

@@ -54 +54 @@
         __u8 out;
 
-        asm (
+        __asm__ volatile (
                 "mov %1, %%dx;"
                 "inb %%dx,%%al;"
@@ -60 +60 @@
                 :"=m"(out)
                 :"m"(port)
-                :"%dx","%al"
+                :"%rdx","%rax"
                 );
         return out;
@@ -67 +67 @@
 static inline __u8 outb(__u16 port,__u8 b) 
 {
-        asm (
+        __asm__ volatile (
                 "mov %0,%%dx;"
                 "mov %1,%%al;"
@@ -73 +73 @@
                 :
                 :"m"( port), "m" (b)
-                :"%dx","%al"
+                :"%rdx","%rax"
                 );
 }