From 5559036b62d800d1d4efb4cc2b12d891919cbc5c Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Mon, 5 Feb 2024 15:36:02 +0300
Subject: [PATCH] Fix TLS access in JIT with MUSL

---
 ext/opcache/jit/zend_jit_x86.dasc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ext/opcache/jit/zend_jit_x86.dasc b/ext/opcache/jit/zend_jit_x86.dasc
index 6d92a32d570e6..d1cbbd6391c53 100644
--- a/ext/opcache/jit/zend_jit_x86.dasc
+++ b/ext/opcache/jit/zend_jit_x86.dasc
@@ -2901,6 +2901,14 @@ static int zend_jit_setup(void)
 		asm ("movq _tsrm_ls_cache@gottpoff(%%rip),%0"
 			: "=r" (ret));
 		tsrm_ls_cache_tcb_offset = ret;
+#elif defined(__MUSL__)
+		size_t *ti;
+
+		__asm__(
+			"leaq _tsrm_ls_cache@tlsgd(%%rip), %0\n"
+			: "=a" (ti));
+		tsrm_tls_offset = ti[1];
+		tsrm_tls_index = ti[0] * 8;
 #else
 		size_t *ti;