diff options
Diffstat (limited to 'kernel/main.c')
| -rw-r--r-- | kernel/main.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/kernel/main.c b/kernel/main.c index 9c524c4..19220f6 100644 --- a/kernel/main.c +++ b/kernel/main.c @@ -4,16 +4,22 @@ #include <fbos/sched.h> #include <fbos/dt.h> -// Stacks to be used by our processes. -unsigned long stack[4][THREAD_SIZE / sizeof(unsigned long)]; +// Stack to be used by our processes. "Blasphemy!" I hear you say. "How dare you +// use the same stack for kernel and user space?" It's not like this is some +// sort of utopian system in which everyone shares everything, but since this +// stupidly simple kernel does not even bother to implement paging nor any other +// memory protection of any kind, it's not like separating stacks for each +// process and kernel space would make much of a difference. Hence, let's keep +// it simple and have the same stack everwhere. +uint64_t stack[THREAD_SIZE / sizeof(uint64_t)]; // Initialize the list of structs by providing a fixed stack address and empty // values everywhere else. struct task_struct tasks[4] = { - [TASK_INIT] = { .stack = stack[0], .name = "init", .entry_addr = nullptr, }, - [TASK_FIZZ] = { .stack = stack[1], .name = "fizz", .entry_addr = nullptr, }, - [TASK_BUZZ] = { .stack = stack[2], .name = "buzz", .entry_addr = nullptr, }, - [TASK_FIZZBUZZ] = { .stack = stack[3], .name = "fizzbuzz", .entry_addr = nullptr, }, + [TASK_INIT] = { .stack = stack, .name = "init", .entry_addr = nullptr, }, + [TASK_FIZZ] = { .stack = stack, .name = "fizz", .entry_addr = nullptr, }, + [TASK_BUZZ] = { .stack = stack, .name = "buzz", .entry_addr = nullptr, }, + [TASK_FIZZBUZZ] = { .stack = stack, .name = "fizzbuzz", .entry_addr = nullptr, }, }; // Defined in fbos/init.h. |