integrate C/LDFLAGS into LunaBuild flow

[lunaix-os.git] / lunaix-os / arch / i386 / boot / prologue.S

diff --git a/lunaix-os/arch/i386/boot/prologue.S b/lunaix-os/arch/i386/boot/prologue.S
index 7a516488df05fc882aa74ffdb8dd6e0d1fb6dd62..dc17242271d1cf1ee56c21443bca1f2fac00c3a1 100644 (file)
--- a/lunaix-os/arch/i386/boot/prologue.S
+++ b/lunaix-os/arch/i386/boot/prologue.S
@@ -1,7 +1,22 @@
 /* 高半核入口点 - 0xC0000000 */
 
 #define __ASM__
-#include <sys/x86_isa.h>
+#include <sys/abi.h>
+#include <sys/failsafe.h>
+
+.section .bss.kstack
+    .global __kinit_stack_end
+    
+    .align 16
+    __kinit_stack_end:
+        .skip 2048, 0
+    __kinit_stack_top:
+    # TODO 
+    # This stack was too small that corrupt the ambient kernel structures.
+    #  (took me days to figure this out!)
+    # We should spent more time to implement a good strategy to detect such
+    #  run-over (we can check these invariants when we trapped in some non-recoverable
+    #  state and provide good feedback to user)
 
 .section .text
     .global hhk_entry_
@@ -9,18 +24,24 @@
         /*
             欢迎来到虚拟内存的世界！ :D
          */
+        movl $__kinit_stack_top, %esp
+        andl $stack_alignment, %esp
+
+        movl $__kinit_stack_end, %eax
+        movl $STACK_SANITY, (%eax)
+        movl $STACK_SANITY, 4(%eax)
+        movl $STACK_SANITY, 8(%eax)
+        movl $STACK_SANITY, 12(%eax)
 
         subl $16, %esp
-        /* 
-            最终还是决定将IDT&GDT的初始化和安装放在这里
-            注意：由于已开启分页，GDTR与IDTR里面放的不是物理地址，是线性地址！ 
-        */
+
         /* 
             加载 GDT 
             P.s. 虽然GDT在分页后已变得不重要，甚至可以忽略不作。但为了保持完整性，还是选择加载他
                     这主要是为了保险起见，让GDTR有一个合法的值，否则多咱的粗心大意，容易出#GP
         */
         call _init_gdt
+
         movl $_gdt, 2(%esp)
         movw _gdt_limit, %ax
         movw %ax, (%esp)
@@ -33,19 +54,14 @@
         movw %cx, %fs
         movw %cx, %gs
         movw %cx, %ss
-
+        
         /* 更新 CS:EIP */
         pushw $KCODE_SEG
         pushl $_after_gdt
         retf
 
     _after_gdt:
-
-        movl $mb_info, _k_init_mb_info
-
-        call _kernel_pre_init
-
-        subl $6, %esp
+        subl $16, %esp
 
         # 加载 IDT
         movl $_idt, 2(%esp)
@@ -53,13 +69,15 @@
         movw %ax, (%esp)
         lidt (%esp)
 
+        # perform arch-specific initialization before diving into kernel
+        call arch_preinit
+
         /* 加载TSS段选择器 */
         movw $TSS_SEG, %ax
         ltr %ax
 
-        addl $6, %esp
-
-        call _kernel_init
+        movl $bhctx_buffer, (%esp)       # mb_parser.c
+        call kernel_bootstrap
 
     1:
         hlt