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

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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
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15
arch/arc/CMakeLists.txt
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@ -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.
# 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)
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_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)