patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

ARC: ARCv2: GCC: restore default TLS behavior for all SDKs

Browse source 
In 0.15.2 SDK we specify r26 as default register for TLS cached
pointer, so it isn't used by compiler even if TLS support isn't
enabled. Restore the previous behavior - so if we don't use
TLS in Zephyr the register isn't stay reserved.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
This commit is contained in:
Evgeniy Paltsev 2022-11-27 00:30:20 +04:00 committed by Carles Cufí
parent f13b6bc125
commit cae6696a75
1 changed files with 10 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
arch/arc/CMakeLists.txt
View file

@ -12,11 +12,16 @@ zephyr_cc_option(-fno-delete-null-pointer-checks)
zephyr_cc_option_ifdef(CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS -munaligned-access)
if(CONFIG_ISA_ARCV2)
# Instruct compiler to use register R26 as thread pointer
# for thread local storage.
if(NOT COMPILER STREQUAL arcmwdt)
if(CONFIG_THREAD_LOCAL_STORAGE)
# Instruct compiler to use proper register as cached thread pointer for thread local storage.
# For ARCv2 the default register is usually not specified - so we need to specify it
# For ARCv3 the register is fixed to r30, so we don't need to specify it
zephyr_cc_option_ifdef(CONFIG_THREAD_LOCAL_STORAGE -mtp-regno=26)
zephyr_compile_options_ifdef(CONFIG_ISA_ARCV2 -mtp-regno=26)
else()
# If thread local storage isn't used - we can safely schedule thread pointer register
zephyr_compile_options_ifdef(CONFIG_ISA_ARCV2 -mtp-regno=none)
endif()
endif()
add_subdirectory(core)