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zephyr/arch/riscv
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TOKITA Hiroshi b674bf6e71 arch: riscv: add ARCH_HAS_SINGLE_THREAD_SUPPORT 
Enable single-threading support for the riscv architecture.

Add z_riscv_switch_to_main_no_multithreading function for
supporting single-threading.

The single-threading does not work with enabling PMP_STACK_GUARD.
It is because single-threading does not use context-switching.
But the privileged mode transition that PMP depends on implicitly
presupposes using context-switching. It is a contradiction.
Thus, disable PMP_STACK_GUARD when MULTITHREADING is not enabled.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>
2023-05-12 09:56:40 +02:00
..
core arch: riscv: add ARCH_HAS_SINGLE_THREAD_SUPPORT 2023-05-12 09:56:40 +02:00
include arch: riscv: add ARCH_HAS_SINGLE_THREAD_SUPPORT 2023-05-12 09:56:40 +02:00
CMakeLists.txt riscv: toolchain arguments for a 64-bit build 2019-08-09 09:11:45 -05:00
Kconfig arch: riscv: add ARCH_HAS_SINGLE_THREAD_SUPPORT 2023-05-12 09:56:40 +02:00
Kconfig.core riscv: Introduce Zicsr and Zifencei extensions 2022-08-29 16:57:18 +02:00
Kconfig.isa riscv: Introduce BitManip extensions 2022-08-29 16:57:18 +02:00