From a733e98eb99b2da8d68cc1d94d66cd1a7dd3e9e0 Mon Sep 17 00:00:00 2001
From: Obriv Mostov <virbotsom@Obrivs-MacBook-Pro.local>
Date: Fri, 17 Apr 2026 15:10:02 +0700
Subject: [PATCH] [Arm64, Apple] Added X1 as a second syscall retval register

---
 arch/arm64/arch_arm64.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/arch_arm64.cpp b/arch/arm64/arch_arm64.cpp
index fd4942fd5..2d3f88990 100644
--- a/arch/arm64/arch_arm64.cpp
+++ b/arch/arm64/arch_arm64.cpp
@@ -2749,7 +2749,7 @@ class AppleArm64SystemCallConvention : public CallingConvention
 	}
 
 
-	virtual vector<uint32_t> GetCallerSavedRegisters() override { return vector<uint32_t> {REG_X0}; }
+	virtual vector<uint32_t> GetCallerSavedRegisters() override { return vector<uint32_t> {REG_X0, REG_X1}; }
 
 
 	virtual vector<uint32_t> GetCalleeSavedRegisters() override
@@ -2761,6 +2761,8 @@ class AppleArm64SystemCallConvention : public CallingConvention
 
 	virtual uint32_t GetIntegerReturnValueRegister() override { return REG_X0; }
 
+	virtual uint32_t GetHighIntegerReturnValueRegister() override { return REG_X1; }
+
 
 	virtual bool IsEligibleForHeuristics() override { return false; }
 };