Merge #19026

19026: riscv: Reduce reset trampoline code size by 2 bytes r=maribu a=jnohlgard `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` Co-authored-by: Joakim Nohlgård <[email protected]>
RIOT-OS · Dec 11, 2022 · 7c7aede · 7c7aede
2 parents bc0dcb9 + b3d04d8
commit 7c7aede
Showing 1 changed file with 1 addition and 2 deletions.
diff --git 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$