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#include "process.h"
#include "arch/x86_64/hal/obj.h"
#include "hal/obj.h"
#include "hal/process.h"
#include "hal/smp.h"
#include "lib/string.h"
#include "init.h"
#include "smp.h"
#include "paging.h"
#include "jove.h"
PAGEALIGN uint8_t s_init_iopb[0x2000];
PAGEALIGN char s_init_pcb_bytes[0x1000] = { 0 };
static pcb_t *s_init_pcb = (pcb_t*)&s_init_pcb_bytes;
jove_owned_obj_t*
process_current(void)
{
return obj_take(((processor_t*)processor_current())->pcb_obj);
}
pcb_t*
pcb_from_obj(jove_owned_obj_t *obj)
{
if(obj_gettype(obj) != JOVE_OBJ_PROCESS) {
reterr(EBADOBJ);
}
return obj_deref(obj);
}
pid_t
pcb_pid(pcb_t *pcb)
{
return pcb->pid;
}
jove_owned_obj_t*
pcb_rootdir(pcb_t *pcb)
{
return pcb->rootdir;
}
void
processing_setup(void (*process_main))
{
memset(s_init_iopb, 0xFF, 0x2000);
uintptr_t ksp = ((uintptr_t)&s_init_pcb_bytes) + 0xFF8;
s_init_pcb->pid = 1;
s_init_pcb->ksp = (void*)ksp;
s_init_pcb->pml4 = paging_get_pml4();
s_init_pcb->rootdir = obj_take(_rootdir_obj);
jove_owned_obj_t *iopb_obj = objdir_getlocal(_rootdir_obj, ROOTDIR_IOPB_I);
obj_settype(iopb_obj, JOVE_OBJ_IOPB);
obj_setvalue(iopb_obj, (uintptr_t)s_init_iopb);
processor_t *proc = processor_current();
proc->tss.rsp[0] = (uintptr_t)s_init_pcb->ksp;
memcpy(proc->iopb, s_init_iopb, 0x2000);
{
jove_owned_obj_t *process_obj = objdir_getlocal(_rootdir_obj, ROOTDIR_PCB_I);
obj_settype(process_obj, JOVE_OBJ_PROCESS);
obj_setvalue(process_obj, (uintptr_t)s_init_pcb);
proc->pcb_obj = obj_release(process_obj);
proc->pcb = s_init_pcb;
}
__asm__ volatile("\
movq %0, %%rsp; \
movq $0, %%rbp; \
jmpq %1"::
"r"(s_init_pcb->ksp), "r"(process_main));
}
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