From 42a2bdaecaee627247689b3f4ff2828fe3c8dc97 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Thu, 11 Sep 2025 14:37:04 -0400
Subject: load init from ELF executable

---
 include/arch/x86_64/init.h | 12 ++++++++++++
 include/arch/x86_64/tcb.h  | 10 ++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 include/arch/x86_64/init.h

(limited to 'include/arch')

diff --git a/include/arch/x86_64/init.h b/include/arch/x86_64/init.h
new file mode 100644
index 0000000..d8fdf2c
--- /dev/null
+++ b/include/arch/x86_64/init.h
@@ -0,0 +1,12 @@
+#ifndef _JOVE_x86_64_INIT_H
+#define _JOVE_x86_64_INIT_H 1
+
+#include <stdint.h>
+
+uintptr_t init_alloc_pageframe();
+void init_map_pageframe(uintptr_t pptr, uintptr_t vptr, uint8_t pflags);
+
+__attribute__((noreturn))
+void usermode(void *ip, void *sp);
+
+#endif
diff --git a/include/arch/x86_64/tcb.h b/include/arch/x86_64/tcb.h
index 33da4fa..ae93bdf 100644
--- a/include/arch/x86_64/tcb.h
+++ b/include/arch/x86_64/tcb.h
@@ -2,17 +2,23 @@
 #define _JOVE_x86_64_TCB_H 1
 
 #include <stdint.h>
+#include <stddef.h>
+
+#define KERNEL_STACK_MINSIZE 0x1000
 
 typedef struct jove_ThreadControlBlock
 {
-    void *stack;
+    size_t size;
+    struct jove_ThreadControlBlock *tcb_next, *sched_next;
+    uint8_t priority;
+
     uintptr_t sp, ksp;
     void *pml4;
     void *mailbox;
 
     /* PML caching for faster calls?*/
 
-    uint8_t kstack[KERNEL_STACKBYTES];
+    uint8_t kstack[];
 } tcb_t;
 
 #endif
-- 
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