A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

[PATCH] x86: more asm cleanups

Browse source 
Some more assembler cleanups I noticed along the way.

Signed-off-by: Zachary Amsden <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Zachary Amsden 2005-09-03 15:56:42 -07:00 • committed by Linus Torvalds
commit f2ab446124
8 changed files with 35 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

15
include/asm-i386/msr.h
View file

@ -47,6 +47,21 @@ static inline void wrmsrl (unsigned long msr, unsigned long long val)
: "c" (msr), "0" (a), "d" (b), "i" (-EFAULT));\
ret__; })
/* rdmsr with exception handling */
#define rdmsr_safe(msr,a,b) ({ int ret__; \
asm volatile("2: rdmsr ; xorl %0,%0\n" \
"1:\n\t" \
".section .fixup,\"ax\"\n\t" \
"3: movl %4,%0 ; jmp 1b\n\t" \
".previous\n\t" \
".section __ex_table,\"a\"\n" \
" .align 4\n\t" \
" .long 2b,3b\n\t" \
".previous" \
: "=r" (ret__), "=a" (*(a)), "=d" (*(b)) \
: "c" (msr), "i" (-EFAULT));\
ret__; })
#define rdtsc(low,high) \
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))