From 3fd818c4b59b055ce60ebc8938297ad69cc2e1e8 Mon Sep 17 00:00:00 2001
From: Lovell Fuller <github@lovell.info>
Date: Wed, 19 Mar 2025 17:24:46 +0000
Subject: [PATCH] Prevent use of linux-x64 binaries with v1 microarchitecture

---
 docs/src/content/docs/changelog.md |  2 ++
 lib/sharp.js                       | 12 ++++++++++--
 src/sharp.cc                       |  1 +
 src/utilities.cc                   | 17 +++++++++++++++++
 src/utilities.h                    |  1 +
 5 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/docs/src/content/docs/changelog.md b/docs/src/content/docs/changelog.md
index 4aee8c21..e66f042f 100644
--- a/docs/src/content/docs/changelog.md
+++ b/docs/src/content/docs/changelog.md
@@ -24,6 +24,8 @@ Requires libvips v8.16.1
 
 * Expose WebP `smartDeblock` output option.
 
+* Prevent use of linux-x64 binaries with v1 microarchitecture.
+
 * Add `autoOrient` operation and constructor option.
   [#4151](https://github.com/lovell/sharp/pull/4151)
   [@happycollision](https://github.com/happycollision)
diff --git a/lib/sharp.js b/lib/sharp.js
index 3428c5fe..78853e95 100644
--- a/lib/sharp.js
+++ b/lib/sharp.js
@@ -17,9 +17,9 @@ const paths = [
   '@img/sharp-wasm32/sharp.node'
 ];
 
-let sharp;
+let path, sharp;
 const errors = [];
-for (const path of paths) {
+for (path of paths) {
   try {
     sharp = require(path);
     break;
@@ -29,6 +29,14 @@ for (const path of paths) {
   }
 }
 
+/* istanbul ignore next */
+if (sharp && path.startsWith('@img/sharp-linux-x64') && !sharp._isUsingX64V2()) {
+  const err = new Error('Prebuilt binaries for linux-x64 require v2 microarchitecture');
+  err.code = 'Unsupported CPU';
+  errors.push(err);
+  sharp = null;
+}
+
 /* istanbul ignore next */
 if (sharp) {
   module.exports = sharp;
diff --git a/src/sharp.cc b/src/sharp.cc
index e017b2f3..ed54c501 100644
--- a/src/sharp.cc
+++ b/src/sharp.cc
@@ -33,6 +33,7 @@ Napi::Object init(Napi::Env env, Napi::Object exports) {
   exports.Set("block", Napi::Function::New(env, block));
   exports.Set("_maxColourDistance", Napi::Function::New(env, _maxColourDistance));
   exports.Set("_isUsingJemalloc", Napi::Function::New(env, _isUsingJemalloc));
+  exports.Set("_isUsingX64V2", Napi::Function::New(env, _isUsingX64V2));
   exports.Set("stats", Napi::Function::New(env, stats));
   return exports;
 }
diff --git a/src/utilities.cc b/src/utilities.cc
index ed84458d..93bd50cd 100644
--- a/src/utilities.cc
+++ b/src/utilities.cc
@@ -267,3 +267,20 @@ Napi::Value _isUsingJemalloc(const Napi::CallbackInfo& info) {
   return Napi::Boolean::New(env, false);
 }
 #endif
+
+#if defined(__GNUC__) && defined(__x86_64__)
+// Are SSE 4.2 intrinsics available at runtime?
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
+  Napi::Env env = info.Env();
+  unsigned int eax, ebx, ecx, edx;
+  __asm__ __volatile__("cpuid"
+    : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
+    : "a"(1));
+  return Napi::Boolean::New(env, (ecx & 1U << 20) != 0);
+}
+#else
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
+  Napi::Env env = info.Env();
+  return Napi::Boolean::New(env, false);
+}
+#endif
diff --git a/src/utilities.h b/src/utilities.h
index 0f499ad3..9272f955 100644
--- a/src/utilities.h
+++ b/src/utilities.h
@@ -15,5 +15,6 @@ Napi::Value format(const Napi::CallbackInfo& info);
 void block(const Napi::CallbackInfo& info);
 Napi::Value _maxColourDistance(const Napi::CallbackInfo& info);
 Napi::Value _isUsingJemalloc(const Napi::CallbackInfo& info);
+Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info);
 
 #endif  // SRC_UTILITIES_H_