The __bss_start is the source end address hence load its address directly into register 't2' for optimization.
Signed-off-by: Bin Meng bmeng@tinylab.org Reviewed-by: Rick Chen rick@andestech.com ---
(no changes since v1)
arch/riscv/cpu/start.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 4687bca3c9..3c8344c345 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -283,9 +283,7 @@ stack_setup: beq t0, s4, clear_bss /* skip relocation */
mv t1, s4 /* t1 <- scratch for copy_loop */ - la t3, __bss_start - sub t3, t3, t0 /* t3 <- __bss_start_ofs */ - add t2, t0, t3 /* t2 <- source end address */ + la t2, __bss_start /* t2 <- source end address */
copy_loop: LREG t5, 0(t0)