From 779b7fc1fe91e5a355b6e15de882d46b26ab2270 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Sat, 5 Sep 2026 20:24:13 -0400
Subject: working syscalls.

---
 arch/x86_64/hal/obj.h     |  2 +-
 arch/x86_64/hal/process.c | 37 +++++++++++++++++++++++++++++++++++--
 arch/x86_64/hal/process.h | 14 ++------------
 arch/x86_64/hal/smp.c     |  8 ++------
 arch/x86_64/hal/smp.h     |  2 ++
 5 files changed, 42 insertions(+), 21 deletions(-)

(limited to 'arch/x86_64/hal')

diff --git a/arch/x86_64/hal/obj.h b/arch/x86_64/hal/obj.h
index f7d7711..78d7383 100644
--- a/arch/x86_64/hal/obj.h
+++ b/arch/x86_64/hal/obj.h
@@ -7,7 +7,7 @@
 
 enum
 {
-    JOVE_OBJ_SERIAL_COM = 0x81,
+    JOVE_OBJ_SERIAL_COM = 0x80,
 };
 
 /*Represents a locked kernel object pointer inside of a object directory.*/
diff --git a/arch/x86_64/hal/process.c b/arch/x86_64/hal/process.c
index 5c91238..872be5a 100644
--- a/arch/x86_64/hal/process.c
+++ b/arch/x86_64/hal/process.c
@@ -1,6 +1,8 @@
 #include "process.h"
 #include "arch/x86_64/hal/obj.h"
 #include "hal/obj.h"
+#include "hal/process.h"
+#include "hal/smp.h"
 #include "init.h"
 #include "smp.h"
 #include "paging.h"
@@ -9,22 +11,53 @@
 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 obj_take(pcb->rootdir);
+}
+
 void
 processing_setup(void (*process_main))
 {
     uintptr_t ksp = ((uintptr_t)&s_init_pcb_bytes) + 0xFF0;
+
+    s_init_pcb->pid = 1;
     s_init_pcb->ksp = (void*)ksp;
     s_init_pcb->pml4 = paging_get_pml4();
+    s_init_pcb->rootdir = _rootdir_obj;
 
     processor_t *proc = processor_current();
-    proc->pcb = s_init_pcb;
     proc->tss.rsp[0] = (uintptr_t)s_init_pcb->ksp;
 
     {
         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);
-        obj_release(process_obj);
+
+        proc->pcb_obj = obj_release(process_obj);
+        proc->pcb = s_init_pcb;
     }
 
     __asm__ volatile("\
diff --git a/arch/x86_64/hal/process.h b/arch/x86_64/hal/process.h
index 0c0fb5b..65b2318 100644
--- a/arch/x86_64/hal/process.h
+++ b/arch/x86_64/hal/process.h
@@ -1,22 +1,12 @@
 #ifndef _JOVE_x86_64_HAL_PROCESS_H
 #define _JOVE_x86_64_HAL_PROCESS_H 1
 
-#include "hal/obj.h"
+#include "hal/process.h"
 #include "arch/x86_64/x86_64.h"
 
-enum pcb_state
-{
-    PCB_DEAD, PCB_READY, PCB_RUNNING, PCB_BLOCKED
-};
-
-struct pcb_mailbox
-{
-    jove_obj_t *obj;
-    uintmax_t pcbid;
-};
-
 typedef struct process_control_block
 {
+    pid_t pid;
     jove_obj_t *rootdir;
     uintptr_t pml4;
 
diff --git a/arch/x86_64/hal/smp.c b/arch/x86_64/hal/smp.c
index e0945c1..85ba4ec 100644
--- a/arch/x86_64/hal/smp.c
+++ b/arch/x86_64/hal/smp.c
@@ -1,4 +1,5 @@
 #include "smp.h"
+#include "hal/process.h"
 #include "init.h"
 #include "hal/obj.h"
 #include "config.h"
@@ -55,12 +56,7 @@ smp_init_bsp(void)
     }
 }
 
-void *processor_current(void)
+processor_t *processor_current(void)
 {
     return (processor_t*)msr_get_gs_base();
 }
-
-jove_obj_t *processor_objdir(void *processor)
-{
-    return ((processor_t*)processor)->pcb->rootdir;
-}
diff --git a/arch/x86_64/hal/smp.h b/arch/x86_64/hal/smp.h
index 68e420f..5813dd3 100644
--- a/arch/x86_64/hal/smp.h
+++ b/arch/x86_64/hal/smp.h
@@ -3,6 +3,7 @@
 
 #include "gdt.h"
 #include "process.h"
+#include "hal/obj.h"
 #include "hal/smp.h"
 
 typedef struct processor
@@ -10,6 +11,7 @@ typedef struct processor
     struct gdt_entry gdt[GDT_TSS_HI+1];
     struct tss tss;
     
+    jove_obj_t *pcb_obj;
     pcb_t *pcb;
 } processor_t;
 
-- 
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