diff options
| author | Bin Meng | 2023-04-13 14:20:00 +0800 |
|---|---|---|
| committer | Leo Yu-Chi Liang | 2023-04-20 20:45:08 +0800 |
| commit | 883f553e6ba510d4d4ab7d645ff46bc999752e79 (patch) | |
| tree | b51304c67f1d58b4254a05741bca83f1e2c7a05b /arch/riscv | |
| parent | db9a7e51bf40e1b60fede560d50afb6c1e830a99 (diff) | |
riscv: Optimize source end address calculation in start.S
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>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/cpu/start.S | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 4687bca3c99..3c8344c345b 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) |