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X-Recipient: | djgpp AT delorie DOT com |
From: | "Gerrit van Niekerk" <gerritvn AT gpvno DOT co DOT za> |
Organization: | GPvNO |
To: | djgpp AT delorie DOT com |
Date: | Thu, 25 Oct 2007 01:00:56 +0200 |
MIME-Version: | 1.0 |
Subject: | Using inline asm |
Message-ID: | <471FEAC8.5179.2FAB88DB@gerritvn.gpvno.co.za> |
X-mailer: | Pegasus Mail for Windows (4.41) |
Reply-To: | djgpp AT delorie DOT com |
How can I get GCC to move a register value to a C variable? As I understand the Info documentation, this is how I should do it: int CheckProcessor (void) { int iRet; asm ("cpuid"); asm ("movl %eax,%0" : "=g" (iRet)); return iRet; } This gives me an error on the second "asm" line: (445) Error: error: invalid 'asm': operand number missing after %-letter I have tried different constraint codes, but they all give the same problem. How should I do it?
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