nooc

commit a788616082575e9be8f07c9a318bdef7e8032221
parent 25a5e9b12fc3f19ee867e6d2b81f6a647bdfaa77
Author: Nihal Jere <nihal@nihaljere.xyz>
Date:   Sun,  9 Jan 2022 23:09:31 -0600

x64: allow numbered registers as call address

Diffstat:
M
x64.c
 | 
7
+++++--

1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/x64.c b/x64.c
@@ -598,11 +598,14 @@ size_t
 call(char *buf, enum reg reg)
 {
 	if (buf) {
+		if (reg >= 8)
+			*(buf++) = REX_B;
+
 		*(buf++) = 0xFF;
-		*(buf++) = (MOD_DIRECT << 6) | (2 << 3) | reg;
+		*(buf++) = (MOD_DIRECT << 6) | (2 << 3) | (reg & 7);
 	}
 
-	return 2;
+	return reg >= 8 ? 3 : 2;
 }
 
 size_t