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riscv: use standard MSTATUS

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This is no longer needed, since all in-tree platforms are only using
the standard mstatus formats. Remove it to avoid the complexity.

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2020-01-03 18:18:24 -08:00 • committed by Anas Nashif
commit a6b3b616f5
11 changed files with 34 additions and 79 deletions
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4
arch/riscv/core/thread.c
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@ -45,7 +45,7 @@ void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,
*
* Given that context switching is performed via a system call exception
* within the RISCV architecture implementation, initially set:
* 1) MSTATUS to SOC_MSTATUS_DEF_RESTORE in the thread stack to enable
* 1) MSTATUS to MSTATUS_DEF_RESTORE in the thread stack to enable
* interrupts when the newly created thread will be scheduled;
* 2) MEPC to the address of the z_thread_entry_wrapper in the thread
* stack.
@ -57,7 +57,7 @@ void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,
* counter will be restored following the MEPC value set within the
* thread stack.
*/
stack_init->mstatus = SOC_MSTATUS_DEF_RESTORE;
stack_init->mstatus = MSTATUS_DEF_RESTORE;
stack_init->mepc = (ulong_t)z_thread_entry_wrapper;
thread->callee_saved.sp = (ulong_t)stack_init;