insns.pl: register 0 should add RN_ZERO, not RM_ZERO

H. Peter Anvin (Intel) · H. Peter Anvin (Intel) · commit 9b101e931622 · 2025-10-09T15:42:29.000-07:00
Not all registers are valid as memory references, and thus using RM_ZERO is incorrect. Use RN_ZERO instead, which is simply the zero-register bit. Fixes: #140 Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
diff --git a/x86/insns.pl b/x86/insns.pl
@@ -760,7 +760,7 @@ ($$$$)
 		    $opsz = $1 + 0;
                 }
 		if ($opp =~ s/0$//) {
-		    push(@oppx, 'rm_zero');
+		    push(@oppx, 'rn_zero');
 		    $iszero = 1;
 		    if ($opp !~ /reg/) {
 			$opp .= 'reg';

Original file line number	Diff line number	Diff line change
`@@ -760,7 +760,7 @@ ($$$$)`
`760`	`760`	`$opsz = $1 + 0;`
`761`	`761`	`}`
`762`	`762`	`if ($opp =~ s/0$//) {`
`763`		`- push(@oppx, 'rm_zero');`
	`763`	`+ push(@oppx, 'rn_zero');`
`764`	`764`	`$iszero = 1;`
`765`	`765`	`if ($opp !~ /reg/) {`
`766`	`766`	`$opp .= 'reg';`