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nanokernel: move dataCopy() and bssZero() to common code

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Used by ARC, ARM, Nios II. x86 has alternate code done in assembly.

Linker scripts had some alarming comments about data/BSS overlap,
but the beginning of BSS is aligned so this can't happen even if
the end of data isn't.

The common code doesn't use fake pointer values for the number of
words in these sections, don't compute or export them.

Change-Id: I4291c2a6d0222d0a3e95c140deae7539ebab3cc3
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2016-07-06 11:06:24 -07:00 • committed by Inaky Perez-Gonzalez
commit 5b9378ab7e
10 changed files with 81 additions and 193 deletions
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2
include/linker-defs.h
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@ -133,12 +133,10 @@ GDATA(__data_num_words)
#include <stdint.h>
extern char __bss_start[];
extern char __bss_end[];
extern int __bss_num_words[];
#ifdef CONFIG_XIP
extern char __data_rom_start[];
extern char __data_ram_start[];
extern char __data_ram_end[];
extern int __data_num_words[];
#endif
extern char _image_rom_start[];