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[task] Sometimes, we have only the kernel.

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This commit is contained in:
Kevin Lange 2011-03-18 22:27:43 -05:00
parent f7313d7bf5
commit 45082c1011
1 changed files with 2 additions and 1 deletions
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3
kernel/core/task.c
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@ -5,7 +5,7 @@
#include <system.h>
#define KERNEL_STACK_SIZE 0x1000
__volatile__ task_t * current_task;
__volatile__ task_t * current_task = NULL;
__volatile__ task_t * ready_queue;
uint32_t next_pid = 0;
@ -153,6 +153,7 @@ switch_task() {
if (!current_task) {
return;
}
if (!current_task->next && current_task == ready_queue) return;
uintptr_t esp, ebp, eip;
__asm__ __volatile__ ("mov %%esp, %0" : "=r" (esp));
__asm__ __volatile__ ("mov %%ebp, %0" : "=r" (ebp));