From 1fd45766a7bb6abad614c9c2c0a3b90bcde62290 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sun, 21 Jul 2024 16:25:54 +0200
Subject: [PATCH] std.os.linux.start_pie: Add loongarch support.

---
 lib/std/os/linux/start_pie.zig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/std/os/linux/start_pie.zig b/lib/std/os/linux/start_pie.zig
index e7355021bb..b16a4e6004 100644
--- a/lib/std/os/linux/start_pie.zig
+++ b/lib/std/os/linux/start_pie.zig
@@ -7,6 +7,7 @@ const R_AMD64_RELATIVE = 8;
 const R_386_RELATIVE = 8;
 const R_ARM_RELATIVE = 23;
 const R_AARCH64_RELATIVE = 1027;
+const R_LARCH_RELATIVE = 3;
 const R_RISCV_RELATIVE = 3;
 const R_SPARC_RELATIVE = 22;
 
@@ -15,6 +16,7 @@ const R_RELATIVE = switch (builtin.cpu.arch) {
     .x86_64 => R_AMD64_RELATIVE,
     .arm => R_ARM_RELATIVE,
     .aarch64 => R_AARCH64_RELATIVE,
+    .loongarch32, .loongarch64 => R_LARCH_RELATIVE,
     .riscv64 => R_RISCV_RELATIVE,
     else => @compileError("Missing R_RELATIVE definition for this target"),
 };
@@ -57,6 +59,12 @@ fn getDynamicSymbol() [*]elf.Dyn {
             \\ add %[ret], %[ret], #:lo12:_DYNAMIC
             : [ret] "=r" (-> [*]elf.Dyn),
         ),
+        .loongarch32, .loongarch64 => asm volatile (
+            \\ .weak _DYNAMIC
+            \\ .hidden _DYNAMIC
+            \\ la.local %[ret], _DYNAMIC
+            : [ret] "=r" (-> [*]elf.Dyn),
+        ),
         .riscv64 => asm volatile (
             \\ .weak _DYNAMIC
             \\ .hidden _DYNAMIC