From 2178817c4a105ead044e054bf902f256e6d589c2 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Wed, 24 Jan 2018 23:22:33 +0300 Subject: arc: Get rid of handwritten string routines U-Boot is a bit special piese of software because it is being only executed once on power-on as compared to operating system for example. That's why we don't care much about performance optimizations instead we're more concerned about size. And up-to-date compilers might produce much smaller code compared to performance-optimized routines copy-pasted from the Linux kernel. Here's an example: ------------------------------->8-------------------------- --- size_asm_strings.txt +++ size_c_strings.txt @@ -1,2 +1,2 @@ text data bss dec hex filename - 121260 3784 3308 128352 1f560 u-boot + 120448 3784 3308 127540 1f234 u-boot ------------------------------->8-------------------------- See we were able to shave off ~800 bytes of .text section. Also usage of string routines implemented in C gives us an ability to support more HW flavors for free: generated instructions will match our target as long as correct compiler option is used. Signed-off-by: Alexey Brodkin --- arch/arc/lib/Makefile | 7 ------- 1 file changed, 7 deletions(-) (limited to 'arch/arc/lib/Makefile') diff --git a/arch/arc/lib/Makefile b/arch/arc/lib/Makefile index 12097bf3be..6b7fb0fdff 100644 --- a/arch/arc/lib/Makefile +++ b/arch/arc/lib/Makefile @@ -10,13 +10,6 @@ obj-y += cache.o obj-y += cpu.o obj-y += interrupts.o obj-y += relocate.o -obj-y += strchr-700.o -obj-y += strcmp.o -obj-y += strcpy-700.o -obj-y += strlen.o -obj-y += memcmp.o -obj-y += memcpy-700.o -obj-y += memset.o obj-y += reset.o obj-y += ints_low.o obj-y += init_helpers.o -- cgit