From f283057bee8874a497908f420c7853606d5c98d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Mon, 7 Sep 2026 01:05:33 +0200
Subject: [PATCH] std.os.linux: add HWCAP constants for riscv

---
 lib/std/os/linux.zig | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 80cf271418f593870fd1913159838c78a7c1dc97..fd892a548f2074366d28b135d9c834f090849d66 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -878,6 +878,15 @@ pub const HWCAP = switch (native_arch) {
             pub const ARCH_2_07 = 1 << 31;
         };
     },
+    .riscv32, .riscv64 => struct {
+        pub const ISA_A = 1 << 0;
+        pub const ISA_C = 1 << 2;
+        pub const ISA_D = 1 << 3;
+        pub const ISA_F = 1 << 5;
+        pub const ISA_I = 1 << 8;
+        pub const ISA_M = 1 << 12;
+        pub const ISA_V = 1 << 21;
+    },
     .s390x => struct {
         pub const ESAN3 = 1 << 0;
         pub const ZARCH = 1 << 1;
-- 
2.54.0