[9156] in linux-scsi channel archive
inline assembly interpretation
daemon@ATHENA.MIT.EDU (hiren_mehta@agilent.com)
Mon Jul 10 16:04:08 2000
Message-ID: <C657BB976D4AD411AA1E00D0B7476D305903A9@xsj02.cos.agilent.com>
From: hiren_mehta@agilent.com
To: linux-scsi@vger.rutgers.edu, linux-kernel@vger.rutgers.edu
Date: Mon, 10 Jul 2000 12:24:17 -0600
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charset="iso-8859-1"
Is there any document which can help me understand
the following lines of inline assembly code ?
inline void __const_udelay(unsigned long xloops)
{
int d0;
__asm__("mull %0"
:"=d" (xloops), "=&a" (d0)
:"1" (xloops),"0" (current_cpu_data.loops_per_sec));
__delay(xloops);
}
void __delay(unsigned long loops)
{
int d0;
__asm__ __volatile__(
"\tjmp 1f\n"
".align 16\n"
"1:\tjmp 2f\n"
".align 16\n"
"2:\tdecl %0\n\tjns 2b"
:"=&a" (d0)
:"0" (loops));
}
Thanks
-hiren
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