xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Blackfin: calculate on-chip lengths at link time rather than run time

Browse Source 
Since the link sizes never change at runtime, push the calculation out to
the linker script to save some useless calculation costs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger
2009-09-23 20:34:48 +00:00
parent 13048f8866
commit 5cd82a6d58
3 changed files with 44 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
arch/blackfin/include/asm/sections.h
View File

@@ -13,10 +13,18 @@ extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
extern unsigned long _ramstart, _ramend, _rambase;
extern unsigned long memory_start, memory_end, physical_mem_end;
extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
_ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
_stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
_ebss_l2[], _l2_lma_start[];
/*
* The weak markings on the lengths might seem weird, but this is required
* in order to make gcc accept the fact that these may actually have a value
* of 0 (since they aren't actually addresses, but sizes of sections).
*/
extern char _stext_l1[], _etext_l1[], _text_l1_lma[], __weak _text_l1_len[];
extern char _sdata_l1[], _edata_l1[], _sbss_l1[], _ebss_l1[],
_data_l1_lma[], __weak _data_l1_len[];
extern char _sdata_b_l1[], _edata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
_data_b_l1_lma[], __weak _data_b_l1_len[];
extern char _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[],
_sbss_l2[], _ebss_l2[], _l2_lma[], __weak _l2_len[];
#include <asm/mem_map.h>