os

commit dacee5fd166029c4f64c7929dc9064418c739d40
parent 401b9d545afdde914f13ae1ee0d2f99c89b527d6
Author: erai <erai@omiltem.net>
Date:   Tue, 21 May 2024 04:09:46 -0400

add rdrand

Diffstat:
M
as.c
 | 
2
++
M
cc1.c
 | 
9
+++++++++

2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/as.c b/as.c
@@ -115,6 +115,8 @@ enum {
 	OP_ORI = 0x010081,
 	OP_CMPI = 0x070081,
 
+	OP_RDRAND = 0x060fc7,
+
 	OP_IMULM = 0x0400f7,
 	OP_IDIVM = 0x0700f7,
 	OP_SHLM = 0x0400d3,
diff --git a/cc1.c b/cc1.c
@@ -1895,6 +1895,15 @@ main(argc: int, argv: **byte, envp: **byte) {
 		emit_ret(c.as);
 	}
 
+	d = find(c, "_rdrand", 0:*byte, 1);
+	if (d.func_defined && !d.func_label.fixed) {
+		fixup_label(c.as, d.func_label);
+		emit_preamble(c.as, 0, 0);
+		as_modr(c.as, OP_RDRAND, R_RAX);
+		as_opr(c.as, OP_PUSHR, R_RAX);
+		emit_ret(c.as);
+	}
+
 	d = find(c, "taskswitch", 0:*byte, 1);
 	if (d.func_defined && !d.func_label.fixed) {
 		fixup_label(c.as, d.func_label);