#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM)
void default_idle(void)
{
- while(1) {
- if (!need_resched()) {
- local_irq_enable();
- __asm__("sleep");
- local_irq_disable();
- }
- schedule();
- }
+ local_irq_disable();
+ if (!need_resched()) {
+ local_irq_enable();
+ /* XXX: race here! What if need_resched() gets set now? */
+ __asm__("sleep");
+ } else
+ local_irq_enable();
}
#else
void default_idle(void)
{
- while(1) {
- if (need_resched())
- schedule();
- }
+ cpu_relax();
}
#endif
void (*idle)(void) = default_idle;
*/
void cpu_idle(void)
{
- idle();
+ while (1) {
+ while (!need_resched())
+ idle();
+ preempt_enable_no_resched();
+ schedule();
+ preempt_disable();
+ }
}
void machine_restart(char * __unused)
__asm__("jmp @@0");
}
-EXPORT_SYMBOL(machine_restart);
-
void machine_halt(void)
{
local_irq_disable();
for (;;);
}
-EXPORT_SYMBOL(machine_halt);
-
void machine_power_off(void)
{
local_irq_disable();
for (;;);
}
-EXPORT_SYMBOL(machine_power_off);
-
void show_regs(struct pt_regs * regs)
{
printk("\nPC: %08lx Status: %02x",
{
struct pt_regs * childregs;
- childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long) p->thread_info)) - 1;
+ childregs = (struct pt_regs *) (THREAD_SIZE + task_stack_page(p)) - 1;
*childregs = *regs;
childregs->retpc = (unsigned long) ret_from_fork;
return 0;
}
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-/* changed the size calculations - should hopefully work better. lbt */
- dump->magic = CMAGIC;
- dump->start_code = 0;
- dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
- dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
- dump->u_dsize = ((unsigned long) (current->mm->brk +
- (PAGE_SIZE-1))) >> PAGE_SHIFT;
- dump->u_dsize -= dump->u_tsize;
- dump->u_ssize = 0;
-
- dump->u_ar0 = (struct user_regs_struct *)(((int)(&dump->regs)) -((int)(dump)));
- dump->regs.er0 = regs->er0;
- dump->regs.er1 = regs->er1;
- dump->regs.er2 = regs->er2;
- dump->regs.er3 = regs->er3;
- dump->regs.er4 = regs->er4;
- dump->regs.er5 = regs->er5;
- dump->regs.er6 = regs->er6;
- dump->regs.orig_er0 = regs->orig_er0;
- dump->regs.ccr = regs->ccr;
- dump->regs.pc = regs->pc;
-}
-
/*
* sys_execve() executes a new program.
*/