Messages in this thread | | | Date | Thu, 19 Nov 2009 17:50:30 +0800 | Subject | How to move two valuables to x86 CPU register ebx, ecx by using AT&A inline asm. | From | Johnny Hung <> |
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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.
BRs, H. Johnny
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