From 8d48bbd9746228b63bafa5f92b621998d7d8f3d3 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Sun, 4 Oct 2026 10:49:41 -0400
Subject: move init fully to proc. remove init pages prealloc. prepare for
 scheduling

---
 arch/x86_64/proc/init.c    | 33 ++++++++++++---------------------
 arch/x86_64/proc/process.c |  4 +++-
 arch/x86_64/proc/process.h |  3 ---
 3 files changed, 15 insertions(+), 25 deletions(-)

(limited to 'arch/x86_64/proc')

diff --git a/arch/x86_64/proc/init.c b/arch/x86_64/proc/init.c
index be1d556..3787c7b 100644
--- a/arch/x86_64/proc/init.c
+++ b/arch/x86_64/proc/init.c
@@ -1,4 +1,4 @@
-#include "init.h"
+#include "proc/init.h"
 #include "arch/x86_64/hal/msr.h"
 #include "config.h"
 #include "proc/process.h"
@@ -12,10 +12,6 @@
 #include "boot/cmdline.h"
 #include "boot/initrd.h"
 
-PAGEALIGN static uint8_t s_init_program_pages[INIT_PROGRAM_PAGES_MAX][0x1000];
-PAGEALIGN static uint8_t s_init_stack_pages[INIT_STACK_PAGES + 3][0x1000];
-PAGEALIGN static uint8_t s_init_message_page[0x1000];
-
 static int
 elf_is_valid(struct elf_header *ehdr)
 {
@@ -78,7 +74,6 @@ init_setup(void)
     size_t last_base = 0;
 
     //Load the init ELF
-    size_t last_page = 0;
     for(size_t i = 0; i < init_ehdr->e_phnum; i++) {
         struct elf_phdr *phdr = init_data + init_ehdr->e_phoff + i * init_ehdr->e_phentsize;
         if(phdr->p_type != PT_LOAD) continue;
@@ -93,18 +88,15 @@ init_setup(void)
 
         for(size_t i = 0; i < pages; i++) {
             uintptr_t page_virt = page_base + (i << 12);
-            if(last_page >= INIT_PROGRAM_PAGES_MAX) {
-                kpanic("Program exceeds size limit! (%i > %i)\n", last_page, INIT_PROGRAM_PAGES_MAX);
-            }
 
             int tblres = 0;
+            jove_owned_obj_t page_frame;
             do {
-                uintptr_t tbl_frame = KPTR_TOPHYS(&s_init_program_pages[last_page++]);
-                tblres = pagedir_map_table(pml4, tbl_frame, page_virt);
-                if(tblres == EHASMAP) last_page--;
-            }while(!tblres);
+                page_frame = init_pop_alloc();
+                tblres = pagedir_map_table(pml4, obj_getvalue(&page_frame), page_virt);
+            }while(tblres == 0);
 
-            pagedir_map_frame(pml4, KPTR_TOPHYS(&s_init_program_pages[last_page++]), page_virt,
+            pagedir_map_frame(pml4, obj_getvalue(&page_frame), page_virt,
                               PAGE_WRITEABLE | PAGE_USER);
         }
 
@@ -116,25 +108,24 @@ init_setup(void)
     size_t stack_base = 0x00007FFFFFFFF000;
     int stack_mapres = 0;
 
-    last_page = 0;
     for(size_t i = 0; i < INIT_STACK_PAGES; i++) {
         uintptr_t page_virt = stack_base - (i << 12);
         int tblres = 0;
 
+        jove_owned_obj_t page_frame;
         do {
-            uintptr_t tbl_frame = KPTR_TOPHYS(&s_init_stack_pages[last_page++]);
-            tblres = pagedir_map_table(pml4, tbl_frame, page_virt);
-            if(tblres == EHASMAP) last_page--;
+            page_frame = init_pop_alloc();
+            tblres = pagedir_map_table(pml4, obj_getvalue(&page_frame), page_virt);
         }while(!tblres);
 
-        pagedir_map_frame(pml4, KPTR_TOPHYS(&s_init_stack_pages[last_page++]), page_virt,
+        pagedir_map_frame(pml4, obj_getvalue(&page_frame), page_virt,
                           PAGE_WRITEABLE | PAGE_USER | PAGE_XD);
     }
 
     //Map the syscall message.
     last_base = (last_base + 0xFFF) & ~0xFFF;
-    uintptr_t message_pptr = KPTR_TOPHYS(s_init_message_page);
-    pagedir_map_frame(pml4, message_pptr, last_base,
+    jove_owned_obj_t message_frame = init_pop_alloc();
+    pagedir_map_frame(pml4, obj_getvalue(&message_frame), last_base,
                       PAGE_WRITEABLE | PAGE_USER | PAGE_XD);
 
     extern struct init_payload _init_payload;
diff --git a/arch/x86_64/proc/process.c b/arch/x86_64/proc/process.c
index 6165585..d5513bc 100644
--- a/arch/x86_64/proc/process.c
+++ b/arch/x86_64/proc/process.c
@@ -6,7 +6,7 @@
 #include "hal/obj.h"
 #include "hal/smp.h"
 #include "lib/string.h"
-#include "init.h"
+#include "proc/init.h"
 #include "jove.h"
 
 PAGEALIGN uint8_t s_init_iopb[0x2000];
@@ -28,6 +28,8 @@ processing_setup(void (*process_main))
     init_pcb->header.pagedir = obj_release(objdir_getlocal(_rootdir_obj, ROOTDIR_PAGEDIR_I));
 
     init_pcb->header.pid = 1;
+    init_pcb->header.state = PCB_STATE_RUNNING;
+
     init_pcb->ksp = (void*)ksp;
 
     jove_owned_obj_t *iopb_obj = objdir_getlocal(_rootdir_obj, ROOTDIR_IOPB_I);
diff --git a/arch/x86_64/proc/process.h b/arch/x86_64/proc/process.h
index 534c8d5..6a0aa96 100644
--- a/arch/x86_64/proc/process.h
+++ b/arch/x86_64/proc/process.h
@@ -8,13 +8,10 @@
 typedef struct process_control_block
 {
     struct pcb_expected_header header;
-    struct process_control_block *sched_next;
 
     jove_obj_t *iopb;
 
-    enum pcb_state state;
     int killed;
-    struct pcb_mailbox send, recv;
     
     struct cpu_context context;
     void *ksp;
-- 
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