From a75e16740e1a185d523153d86badf9b2c2bcc12e Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Mon, 23 Mar 2026 05:10:40 +0000
Subject: Vendor a minimal internal/cpu for AMD64 only

---
 internal/cpu/cpu_amd64.s | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 internal/cpu/cpu_amd64.s

(limited to 'internal/cpu/cpu_amd64.s')

diff --git a/internal/cpu/cpu_amd64.s b/internal/cpu/cpu_amd64.s
new file mode 100644
index 00000000..250a34e2
--- /dev/null
+++ b/internal/cpu/cpu_amd64.s
@@ -0,0 +1,22 @@
+//go:build amd64 && !purego
+
+#include "textflag.h"
+
+// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·cpuid(SB), NOSPLIT, $0-24
+	MOVL eaxArg+0(FP), AX
+	MOVL ecxArg+4(FP), CX
+	CPUID
+	MOVL AX, eax+8(FP)
+	MOVL BX, ebx+12(FP)
+	MOVL CX, ecx+16(FP)
+	MOVL DX, edx+20(FP)
+	RET
+
+// func xgetbv() (eax, edx uint32)
+TEXT ·xgetbv(SB), NOSPLIT, $0-8
+	MOVL $0, CX
+	XGETBV
+	MOVL AX, eax+0(FP)
+	MOVL DX, edx+4(FP)
+	RET
-- 
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