Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / arch / x86 / boot / i386 / boot32.S

diff --git a/lunaix-os/arch/x86/boot/i386/boot32.S b/lunaix-os/arch/x86/boot/i386/boot32.S
new file mode 100644 (file)
index 0000000..b969104
--- /dev/null
+++ b/lunaix-os/arch/x86/boot/i386/boot32.S
@@ -0,0 +1,33 @@
+#define __ASM__
+
+#if defined(CONFIG_X86_BL_MB) || defined(CONFIG_X86_BL_MB2)
+#include "sys/boot/multiboot.S.inc"
+#endif
+
+.section .boot.bss
+    /* 根据System V ABI，栈地址必须16字节对齐 */
+    /* 这里只是一个临时栈，在_hhk_init里面我们会初始化内核专用栈 */
+    .align 16
+        .skip 256, 0
+    __boot_stack_top:
+
+.section .boot.text
+    .global start_
+    .type start_, @function     /* Optional, this just give the 
+                                 * linker more knowledge about the label 
+                                 */
+    start_: 
+        cld
+        # 确保屏蔽所有外中断，直到我们准备好PIC为止
+        cli
+        movl $__boot_stack_top, %esp
+
+        subl $16, %esp
+
+        movl %ebx, (%esp)
+        call x86_init
+
+        addl $16, %esp
+
+        pushl $hhk_entry_
+        ret
\ No newline at end of file