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firmware: Minor optimization for relocate

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The t3 register stores the address of _load_end. If relocation is not
required, it is unnecessary to calculate the address of _load_end.

This can reduce the operation time of two instructions.

Signed-off-by: Dongdong Zhang <zhangdongdong@eswincomputing.com>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Dongdong Zhang
2022-11-29 11:54:07 +08:00
committed by Anup Patel
parent ad2ac29263
commit cfbabb9ec6
1 changed files with 1 additions and 1 deletions
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2
firmware/fw_base.S
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@@ -128,9 +128,9 @@ _relocate:
REG_L t1, 0(t1) REG_L t1, 0(t1)
lla t2, _load_start lla t2, _load_start
REG_L t2, 0(t2) REG_L t2, 0(t2)
beq t0, t2, _relocate_done
sub t3, t1, t0 sub t3, t1, t0
add t3, t3, t2 add t3, t3, t2
beq t0, t2, _relocate_done
lla t4, _relocate_done lla t4, _relocate_done
sub t4, t4, t2 sub t4, t4, t2
add t4, t4, t0 add t4, t4, t0