michaelh/zephyr
1
0
Fork 0
Code Releases Activity

linker: cpp: Disable sorting of C++ exception handling info sections

Browse source 
The `CONFIG_LINKER_SORT_BY_ALIGNMENT` config, which is enabled by
default, causes the sections containing C++ exception handling
information to be re-ordered for certain targets (in particular, the
64-bit arch targets). This effectively breaks the required "crtbegin.o
-> others -> crtend.o" order and causes the address of the
__EH_FRAME_BEGIN__ symbol to be invalid; thereby, causing C++
exception unwinding to fail.

This commit adds SORT_NONE property to these sections in order to
ensure that the linking order specified in the linker command line is
maintained.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
This commit is contained in:
Stephanos Ioannidis 2021-05-28 01:51:47 +09:00 • committed by Kumar Gala
commit 9881ce0a11
1 changed files with 4 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
include/linker/cplusplus-ram.ld
View file

@ -18,14 +18,14 @@
SECTION_PROLOGUE(.eh_frame,,)
{
KEEP (*(EXCLUDE_FILE (*crtend.o) .eh_frame))
KEEP (*(.eh_frame))
KEEP (*(SORT_NONE(EXCLUDE_FILE (*crtend.o) .eh_frame)))
KEEP (*(SORT_NONE(.eh_frame)))
} GROUP_LINK_IN(ROMABLE_REGION)
SECTION_PROLOGUE(.tm_clone_table,,)
{
KEEP (*(EXCLUDE_FILE (*crtend.o) .tm_clone_table))
KEEP (*(.tm_clone_table))
KEEP (*(SORT_NONE(EXCLUDE_FILE (*crtend.o) .tm_clone_table)))
KEEP (*(SORT_NONE(.tm_clone_table)))
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
#endif /* CONFIG_EXCEPTIONS */