Files
nixpkgs/pkgs/by-name/et/etterna/0001-Add-aarch64-linux-support.patch
2025-11-03 22:49:53 +01:00

62 lines
1.6 KiB
Diff

From 778cb2ed0d56614fd06d2129398799e46ff51720 Mon Sep 17 00:00:00 2001
From: Marcin Serwin <marcin@serwin.dev>
Date: Mon, 3 Nov 2025 22:25:10 +0100
Subject: [PATCH] Add aarch64-linux support
Signed-off-by: Marcin Serwin <marcin@serwin.dev>
---
src/Etterna/Models/Misc/StageStats.cpp | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/src/Etterna/Models/Misc/StageStats.cpp b/src/Etterna/Models/Misc/StageStats.cpp
index 0c70cf25ae..671717505d 100644
--- a/src/Etterna/Models/Misc/StageStats.cpp
+++ b/src/Etterna/Models/Misc/StageStats.cpp
@@ -19,8 +19,9 @@
#include "Etterna/Singletons/GameManager.h"
#include "Etterna/Models/NoteData/NoteDataUtil.h"
-#if !( defined(_WIN32) || defined(__APPLE__))
- #include <cpuid.h> //We only use cpuid.h on Linux :)
+#if !( defined(_WIN32) || defined(__APPLE__)) \
+ && (defined(__x86_64__) || defined(__i386__))
+ #include <cpuid.h> //We only use cpuid.h on x86 Linux :)
#endif
#ifdef _WIN32
@@ -236,6 +237,8 @@ getCpuHash()
#else // !DARWIN
+#if defined(__x86_64__) || defined(__i386__)
+
uint16_t
getCpuHash()
{
@@ -248,6 +251,22 @@ getCpuHash()
return hash;
}
+
+#else // !x86
+
+uint16_t
+getCpuHash()
+{
+ // https://www.kernel.org/doc/html/v6.17/arch/arm64/cpu-feature-registers.html
+ uint64_t midr = 0;
+ asm("mrs %0, MIDR_EL1" : "=r"(midr));
+
+ // Only leave implementer, variant, and architecture bits.
+ // See https://developer.arm.com/documentation/ddi0601/2025-09/AArch64-Registers/MIDR-EL1--Main-ID-Register?lang=en
+ return midr >> 16;
+}
+
+#endif // !x86
#endif // !DARWIN
std::string
--
2.51.0