From b3d04d8270755d92d46cb6d4b88200d7b59ffc27 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20Nohlg=C3=A5rd?= <joakim@nohlgard.se>
Date: Thu, 8 Dec 2022 13:20:14 +0100
Subject: [PATCH] riscv: Reduce reset trampoline code size by 2 bytes

`addi` with 20 bit immediate does not have a compressed representation,
so using `jalr` with immediate offset uncompressed is smaller than using
`addi`+`c.jr`
---
 cpu/riscv_common/start.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/cpu/riscv_common/start.S b/cpu/riscv_common/start.S
index e8cbdd9c63..508b339cb8 100644
--- a/cpu/riscv_common/start.S
+++ b/cpu/riscv_common/start.S
@@ -19,8 +19,7 @@ _start:
 .option norelax
     csrc CSR_MSTATUS, MSTATUS_MIE
     lui a0, %hi(_start_real)
-    addi a0, a0, %lo(_start_real)
-    jr a0
+    jalr x0, a0, %lo(_start_real)
 
 _start_real:
     la gp, __global_pointer$