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Finished basic task switching mechansim

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PCB is local to a process's address space.
Context switches are written in assembly.
Moved x86 headers to include/x86
This commit is contained in:
ngiddings
2021-04-19 03:40:33 -05:00
parent 086dfe546a
commit 5efc389935
22 changed files with 246 additions and 162 deletions
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6
src/kernel.c
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@@ -66,7 +66,7 @@ int load_module(struct kernel_t *kernel, struct module_t *module)
}
struct process_state_t *next_process(struct kernel_t *kernel, struct process_state_t *prev_state)
{
{
if(prev_state != NULL)
{
kernel->active_process->state = prev_state;
@@ -75,9 +75,9 @@ struct process_state_t *next_process(struct kernel_t *kernel, struct process_sta
kernel->active_process = extract_min(kernel->priority_queue);
if(kernel->active_process != NULL)
{
printf("entering process %08x\n\tcr3=%08x state=%08x.\n", kernel->active_process, kernel->active_process->page_table, kernel->active_process->state);
load_address_space(kernel->active_process->page_table);
load_context(kernel->active_process->state);
printf("entering process %08x cr3=%08x state=%08x.\n", kernel->active_process, kernel->active_process->page_table, kernel->active_process->state);
return kernel->active_process->state;
}
panic("no processes available to enter!");
}