From d8aca3ff2501f9a77e22e5afb7a30380aed205af Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Fri, 16 Oct 2026 16:42:22 -0400
Subject: remove explicit framebuffer in kernel. reduce locking in syscalls

---
 arch/x86_64/hal/gdt.c        |  2 +-
 arch/x86_64/hal/idt.c        |  3 +--
 arch/x86_64/hal/serial_com.c | 26 ++++++--------------------
 arch/x86_64/hal/serial_com.h |  8 ++++++--
 arch/x86_64/hal/smp.c        |  9 ++++-----
 5 files changed, 18 insertions(+), 30 deletions(-)

(limited to 'arch/x86_64/hal')

diff --git a/arch/x86_64/hal/gdt.c b/arch/x86_64/hal/gdt.c
index fc7aa8b..8bfe942 100644
--- a/arch/x86_64/hal/gdt.c
+++ b/arch/x86_64/hal/gdt.c
@@ -63,7 +63,7 @@ gdt_setup(processor_t *processor)
     load_gdt(&gdtr);
 
     uintptr_t tss_base = (uintptr_t)&processor->tss;
-    size_t tss_limit = sizeof(struct tss);
+    size_t tss_limit = sizeof(struct tss) + 0x2000;
 
     struct gdt_entry *tss_lo = &processor->gdt[GDT_TSS_LO];
     struct gdt_entry *tss_hi = &processor->gdt[GDT_TSS_HI];
diff --git a/arch/x86_64/hal/idt.c b/arch/x86_64/hal/idt.c
index ff7a8a0..7b8bd52 100644
--- a/arch/x86_64/hal/idt.c
+++ b/arch/x86_64/hal/idt.c
@@ -20,8 +20,7 @@ struct int_user_handle __int_user_handles[IDT_ENTRIES];
 static struct int_stackframe*
 s_int_handle_stub(struct int_stackframe* frame)
 {
-    kprintf("Unhandled interrupt %i at %p\n", frame->int_num, frame->int_rip);
-    hcf();
+    kpanic_istate(frame, "Unhandled interrupt %i at %p\n", frame->int_num, frame->int_rip);
 }
 
 struct int_stackframe*
diff --git a/arch/x86_64/hal/serial_com.c b/arch/x86_64/hal/serial_com.c
index 372a433..c571057 100644
--- a/arch/x86_64/hal/serial_com.c
+++ b/arch/x86_64/hal/serial_com.c
@@ -1,10 +1,8 @@
+#ifdef DEBUG_SERIAL
+
 #include "serial_com.h"
 #include "port.h"
 #include "jove.h"
-#include "hal/obj.h"
-#include "proc/init.h"
-#include "lib/printf.h"
-#include "sys/objdir.h"
 
 static int
 serial_com_recv(uint16_t port)
@@ -67,27 +65,15 @@ serial_com_init(void)
     if(serial_com_init_port(SERIAL_COM1, 3)) {
         return;
     }
-    
-    {
-        jove_owned_obj_t *com_obj = objdir_getlocal(_rootdir_obj, INIT_ROOTDIR_SERIAL_COM_I);
-        obj_settype(com_obj, JOVE_OBJ_SERIAL_COM);
-        obj_setvalue(com_obj, SERIAL_COM1);
-        obj_release(com_obj);
-    }
-
-    kprintf("Initialized COM1 on port %X for obj %X\n", SERIAL_COM1, INIT_ROOTDIR_SERIAL_COM_I);
 }
 
 int
-serial_com_write(
-        jove_owned_obj_t *obj, 
-        const char *s, size_t len)
+serial_com_write(uint16_t port, const char *s, size_t len)
 {
-    if(obj_gettype(obj) != JOVE_OBJ_SERIAL_COM) {
-        reterr(EBADOBJ);
-    }
     for(size_t i = 0; i < len; i++) {
-        serial_com_putc((uint16_t)obj_getvalue(obj), s[i]);
+        serial_com_putc(port, s[i]);
     }
     return len;
 }
+
+#endif
diff --git a/arch/x86_64/hal/serial_com.h b/arch/x86_64/hal/serial_com.h
index 2dbb0cd..cf0badc 100644
--- a/arch/x86_64/hal/serial_com.h
+++ b/arch/x86_64/hal/serial_com.h
@@ -2,7 +2,7 @@
 #define _JOVE_SERIAL_COM_H 1
 
 #include <stdint.h>
-#include "obj.h"
+#include <stddef.h>
 
 #define SERIAL_COM1 0x3F8
 
@@ -19,8 +19,12 @@
 #define SERIAL_COM_DLAB_BAUD_LO(com) (com)
 #define SERIAL_COM_DLAB_BAUD_HI(com) (com + 1)
 
+#ifdef DEBUG_SERIAL
+
 void serial_com_init(void);
 
-int serial_com_write(jove_owned_obj_t *obj, const char *s, size_t len);
+int serial_com_write(uint16_t port, const char *s, size_t len);
+
+#endif
 
 #endif
diff --git a/arch/x86_64/hal/smp.c b/arch/x86_64/hal/smp.c
index 7d94340..931a89f 100644
--- a/arch/x86_64/hal/smp.c
+++ b/arch/x86_64/hal/smp.c
@@ -45,15 +45,14 @@ smp_init_bsp(void)
 
     processor_t *bsp = &s_processors[0];
     {
-        jove_owned_obj_t *processor_objdir_obj = objdir_getlocal(_rootdir_obj, INIT_ROOTDIR_PROCESSORS_I);
-        obj_settype(processor_objdir_obj, JOVE_OBJ_OBJDIR);
-        obj_setvalue(processor_objdir_obj, (uintptr_t)&s_processor_objdir);
+        jove_owned_obj_t *processor_objdir = objdir_getlocal(_rootdir_obj, INIT_ROOTDIR_PROCESSORS_I);
+        obj_settype(processor_objdir, JOVE_OBJ_OBJDIR);
+        obj_setvalue(processor_objdir, (uintptr_t)&s_processor_objdir);
+        jove_obj_t *processor_objdir_obj = obj_release(processor_objdir);
 
         jove_owned_obj_t *bsp_obj = objdir_getlocal(processor_objdir_obj, 0);
         init_processor(bsp, bsp_obj);
-
         obj_release(bsp_obj);
-        obj_release(processor_objdir_obj);
     }
 
     idt_init();
-- 
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