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From: icw@sam.cs.cmu.edu (I-Chen Wu)
Newsgroups: comp.sys.sun
Subject: Questions about SPARC's C compiler
Keywords: Software
Message-ID: <8481@brazos.Rice.edu>
Date: 2 Jun 90 03:57:30 GMT
Sender: root@rice.edu
Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 198, message 5

1. When I check some assembly codes, I realize global registers, g0,
   g1,...,etc, are rarely used.  Could I insert, say, asm("move %o5, %g2")
   into the C programs?  Any side effect?  

2. In addition, could I move address of a C variable into a specific
   register?  For example,

	routine() {
		int i;
		asm ("move ADDR(i), %g2"); /* move address of i to g2 */
		....
	}

Thank you in advance.

I-Chen Wu