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CPP: fix static objects init for MWDT toolchain

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The constructors of static objects are stored in ".ctors"
section. In case of MWDT toolchain we have incompatible
".ctors" section format with GNU toolchain. So let's use
initialization code provided by MWDT instead of Zephyr one
in case of MWDT toolchain usage.

As it is done for GNU toolchain We call constructors of
static objects but we don't call destructors for them.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
This commit is contained in:
Evgeniy Paltsev 2021-04-26 16:15:49 +03:00 • committed by Christopher Friedt
commit 497cb2e587
7 changed files with 69 additions and 8 deletions
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19
include/arch/arc/v2/linker.ld
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@ -94,6 +94,13 @@ SECTIONS {
#include <linker/kobject-text.ld>
} GROUP_LINK_IN(ROMABLE_REGION)
#if defined(CONFIG_CPLUSPLUS) && !defined(CONFIG_CPP_STATIC_INIT_GNU) && defined(__MWDT_LINKER_CMD__)
/* .init section with code iterating over static objects constructors */
SECTION_PROLOGUE(.init,,ALIGN(4)) {
KEEP(*(.init*))
} GROUP_LINK_IN(ROMABLE_REGION)
#endif /* CONFIG_CPLUSPLUS && !CONFIG_CPP_STATIC_INIT_GNU && __MWDT_LINKER_CMD__ */
_image_text_end = .;
_image_rodata_start = .;
@ -111,6 +118,13 @@ SECTIONS {
#include <snippets-rodata.ld>
#include <linker/kobject-rom.ld>
#if defined(CONFIG_CPLUSPLUS) && !defined(CONFIG_CPP_STATIC_INIT_GNU) && defined(__MWDT_LINKER_CMD__)
. = ALIGN(4);
_fctors = .;
KEEP(*(.ctors*))
_ectors = .;
#endif /* CONFIG_CPLUSPLUS && !CONFIG_CPP_STATIC_INIT_GNU && __MWDT_LINKER_CMD__ */
} GROUP_LINK_IN(ROMABLE_REGION)
#ifdef __MWDT_LINKER_CMD__
@ -225,6 +239,11 @@ SECTIONS {
}
/DISCARD/ : {
#if defined(CONFIG_CPLUSPLUS) && !defined(CONFIG_CPP_STATIC_INIT_GNU) && defined(__MWDT_LINKER_CMD__)
*(.dtors*)
*(.fini*)
*(.eh_frame*)
#endif /* CONFIG_CPLUSPLUS && !CONFIG_CPP_STATIC_INIT_GNU && __MWDT_LINKER_CMD__ */
*(.note.GNU-stack)
*(.got.plt)
*(.igot.plt)