Messages in this thread |  | | | Date | Fri, 20 Nov 2009 09:45:06 +0100 | | From | Jiri Slaby <> | | Subject | Re: How to move two valuables to x86 CPU register ebx, ecx by using AT&A inline asm. |
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On 11/19/2009 10:50 AM, Johnny Hung wrote: > Hi All: > I want to move two local valuables to x86 arch CPU ebx, ecx > register and do outb cpu instruction by using AT&A inline asm in > kernel driver. The following code was I wrote but gcc report syntax > error: > == > unsigned int val = 10; > unsigned int tmp = 5; > .... > __asm__ volatile ("movl %0, %%ebx" > "movl %1, %%ecx" > "outb $0x27, $0xb2" > : > :"r"(val), "r"(tmp) > :"%ebx", "%ecx" > ); > > Does anyone can point me out. Any reply is appreciated.
Why not just: ("outb $0x27, %%al" : : "a" (0xb2), "b"(val), "c" (tmp)); -- js Faculty of Informatics, Masaryk University Suse Labs, Novell
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