Commit 0962114f authored by Daniel Leung's avatar Daniel Leung Committed by Anas Nashif
Browse files

riscv: implements arch_thread_priv_stack_space_get 



This implements arch_thread_priv_stack_space_get() so this can
be used to figure out how much privileged stack space is used.

Signed-off-by: default avatarDaniel Leung <daniel.leung@intel.com>
parent bb313355

arch/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ config RISCV 
	select SCHED_IPI_SUPPORTED if SMP

	select ARCH_HAS_DIRECTED_IPIS

	select BARRIER_OPERATIONS_BUILTIN

	select ARCH_HAS_THREAD_PRIV_STACK_SPACE_GET if USERSPACE

	imply XIP

	help

	  RISCV architecture

arch/riscv/core/thread.c

+12 −0
Original line number Diff line number Diff line
@@ -195,6 +195,18 @@ FUNC_NORETURN void arch_user_mode_enter(k_thread_entry_t user_entry, 
	CODE_UNREACHABLE;

}



int arch_thread_priv_stack_space_get(const struct k_thread *thread, size_t *stack_size,

				     size_t *unused_ptr)

{

	if ((thread->base.user_options & K_USER) != K_USER) {

		return -EINVAL;

	}



	*stack_size = Z_STACK_PTR_ALIGN(K_KERNEL_STACK_RESERVED + CONFIG_PRIVILEGED_STACK_SIZE);



	return z_stack_space_get((void *)thread->arch.priv_stack_start, *stack_size, unused_ptr);

}



#endif /* CONFIG_USERSPACE */



#ifndef CONFIG_MULTITHREADING

CRA Git | Maintained and supported by SUSTech CRA and CCSE