diff options
Diffstat (limited to 'nuttx/arch/arm/src/armv6-m/up_initialstate.c')
| -rw-r--r-- | nuttx/arch/arm/src/armv6-m/up_initialstate.c | 23 |
1 files changed, 5 insertions, 18 deletions
diff --git a/nuttx/arch/arm/src/armv6-m/up_initialstate.c b/nuttx/arch/arm/src/armv6-m/up_initialstate.c index 3e7e3a48f..646d148c1 100644 --- a/nuttx/arch/arm/src/armv6-m/up_initialstate.c +++ b/nuttx/arch/arm/src/armv6-m/up_initialstate.c @@ -126,26 +126,13 @@ void up_initial_state(struct tcb_s *tcb) #endif #endif /* CONFIG_PIC */ - /* Set privileged- or unprivileged-mode, depending on how NuttX is - * configured and what kind of thread is being started. + /* All tasks start via a stub function in kernel space. So all + * tasks must start in privileged thread mode. If CONFIG_NUTTX_KERNEL + * is defined, then that stub function will switch to unprivileged + * mode before transferring control to the user task. */ -#ifdef CONFIG_NUTTX_KERNEL - if ((tcb->flags & TCB_FLAG_TTYPE_MASK) != TCB_FLAG_TTYPE_KERNEL) - { - /* It is a normal task or a pthread. Set user mode */ - - xcp->regs[REG_EXC_RETURN] = EXC_RETURN_UNPRIVTHR; - } - else - { - /* If the kernel build is not selected -OR- if this is a kernel - * thread, then start it in privileged thread mode. - */ - - xcp->regs[REG_EXC_RETURN] = EXC_RETURN_PRIVTHR; - } -#endif /* CONFIG_NUTTX_KERNEL */ + xcp->regs[REG_EXC_RETURN] = EXC_RETURN_PRIVTHR; /* Enable or disable interrupts, based on user configuration */ |