From 858a52c06a4615bd58a6a906333f2ad707d41c0a Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Tue, 19 Aug 2025 15:04:04 -0400
Subject: usermode pager

---
 apps/init/main.c | 77 ++++++++------------------------------------------------
 1 file changed, 10 insertions(+), 67 deletions(-)

(limited to 'apps/init/main.c')

diff --git a/apps/init/main.c b/apps/init/main.c
index c8dabdf..17b825e 100644
--- a/apps/init/main.c
+++ b/apps/init/main.c
@@ -4,11 +4,12 @@
 #include <jove/jove.h>
 #include <jove/object.h>
 #include <jove/syscall.h>
-#include <jove/arch/x86_64/object-pagemap.h>
+
+#include "memory.h"
 
 /**This program acts as a memory and process server.*/
 
-#define INIT_HEAP_START_BYTES 4096
+#define INIT_HEAP_START_BYTES 8192
 __attribute__((section(".bss.heap")))
 uint8_t init_heap[INIT_HEAP_START_BYTES];
 size_t init_heap_start = (uintptr_t)init_heap;
@@ -28,76 +29,18 @@ init_bumpalloc(size_t bytes)
     return r;
 }
 
-KernelObjectTyped _logObject;
-KernelObjectDirectory _untypedDirectory;
-KernelObjectDirectory _processorDirectory;
-KernelObjectPageMapping _pageMapping;
-KernelObjectDirectory _initrd;
-KernelObjectMessage _messageObject;
-
-#define POPULATE_ROOTDIR_MEMB(memb, i) \
-{   KernelObjectTyped *typed = JOVE_OBJECT_TYPED(memb); \
-    __rootdir.children[i] = typed; \
-    typed->parent = JOVE_OBJECT_TYPED(&__rootdir); \
-    typed->membi = i; \
-    if(_syscall_invoke_objdir_getmemb(&__rootdir, i, &typed->type) != 0) { \
-        jove_kprintf("Failed to populate objdir root member %i\n", i); \
-        spin_fail(); \
-    } \
-}
-
-static void
-s_populate_rootdir(init_data_t *init_data)
-{
-    __rootdir.typed.parent = NULL;
-    __rootdir.children[0] = JOVE_OBJECT_TYPED(&__rootdir);
-
-    POPULATE_ROOTDIR_MEMB(&_logObject, init_data->log_object);
-    POPULATE_ROOTDIR_MEMB(&_untypedDirectory, init_data->untyped_data_dir);
-    POPULATE_ROOTDIR_MEMB(&_processorDirectory, init_data->processor_dir);
-    POPULATE_ROOTDIR_MEMB(&_pageMapping, init_data->pm_object);
-    POPULATE_ROOTDIR_MEMB(&_initrd, init_data->initrd_dir);
-    POPULATE_ROOTDIR_MEMB(&_messageObject, init_data->message_object);
-
-    //Populate untyped table
-    for(int i = 1; i < 256; i++) {
-        KernelObjectUntyped untyped;
-        untyped.typed.parent = &_untypedDirectory;
-        untyped.typed.membi = i;
-        if(_syscall_invoke_objdir_getmemb(&_untypedDirectory, i, &untyped.typed.type) != 0) {
-            jove_kprintf("Failed to get member %i of untyped directory\n", i);
-            spin_fail();
-        }
-        if(untyped.typed.type != KO_MEMORY_UNTYPED) continue;
-        _untypedDirectory.children[i] = init_bumpalloc(sizeof(KernelObjectUntyped));
-        memcpy(_untypedDirectory.children[i], &untyped, sizeof(KernelObjectUntyped));
-        
-        _syscall_invoke_untyped_size(&untyped, &untyped.bytes);
-        _syscall_invoke_untyped_alignment(&untyped, &untyped.alignment);
-
-        jove_kprintf("Untyped %i size %X align %X\n", i, untyped.bytes, untyped.alignment);
-    }
-}
+KernelObjectDirectory untypedDirectory;
 
 void
-main(init_data_t *init_data)
+main(void *message_ptr)
 {
     libjove_init(
-            (uintmax_t)init_data->message_object,
-            (void*)init_data->message_object_address);
-    jove_kprintf("Hello, Userland!\n");
+            INIT_OBJECT_MESSAGE,
+            message_ptr);
+    _jove_alloc = init_bumpalloc;
 
-    s_populate_rootdir(init_data);
+    jove_kprintf("Hello, Userland!\n");
+    pager_setup();
 
     for(;;);
 }
-
-__attribute__((section(".text.start")))
-__attribute__((naked))
-void
-_start(void)
-{
-    __asm__ volatile("\
-            popq %%rdi; \
-            jmp main"::);        
-}
-- 
cgit v1.2.1