From c72944b5646863ffaaaff94dc03b939a08566203 Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Wed, 12 Sep 2018 15:23:38 +0200
Subject: struggling with vmem

---
 asm/asm_usermode.S | 39 +++++++++++++++++++++++++++++++++++++++
 asm/asm_usermode.s | 39 ---------------------------------------
 2 files changed, 39 insertions(+), 39 deletions(-)
 create mode 100644 asm/asm_usermode.S
 delete mode 100644 asm/asm_usermode.s

(limited to 'asm')

diff --git a/asm/asm_usermode.S b/asm/asm_usermode.S
new file mode 100644
index 0000000..a07f480
--- /dev/null
+++ b/asm/asm_usermode.S
@@ -0,0 +1,39 @@
+.global asm_usermode
+
+asm_usermode:
+
+	mov 0x4(%esp),%edx    //get adress of passed : void func()
+			      //to be called in ring 3
+
+	// 0x23 is user data segment (|2 low bits)
+	// 0x1b is user code segment (|2 low bits)
+
+	// set segment registers
+        mov $0x23, %ax
+        mov %ax, %ds
+        mov %ax, %es
+        mov %ax, %fs
+        mov %ax, %gs
+
+	// ss is handled by iret
+                 
+        mov %esp, %eax
+
+        pushl $0x23 // user data segment
+        //pushl $0x8fff000-3*32 //%eax  // current stack
+        pushl $0xe0000000-3*32 //%eax  // current stack (3 values will be poped) we subst 4 to align
+        pushf	    // 
+
+        // http://x86.renejeschke.de/html/file_module_x86_id_145.html
+        //mov $0x200, %eax
+	//push %eax	    // eflags image
+        pushl $0x1B	    // return code segment selector
+        push %edx	    // return instruction pointer
+
+        iret
+
+	jmp . // never to be reached
+
+
+ 
+
diff --git a/asm/asm_usermode.s b/asm/asm_usermode.s
deleted file mode 100644
index 147dfe5..0000000
--- a/asm/asm_usermode.s
+++ /dev/null
@@ -1,39 +0,0 @@
-.global asm_usermode
-
-asm_usermode:
-
-	mov 0x4(%esp),%edx    //get adress of passed : void func()
-			      //to be called in ring 3
-
-	// 0x23 is user data segment (|2 low bits)
-	// 0x1b is user code segment (|2 low bits)
-
-	// set segment registers
-        mov $0x23, %ax
-        mov %ax, %ds
-        mov %ax, %es
-        mov %ax, %fs
-        mov %ax, %gs
-
-	// ss is handled by iret
-                 
-        mov %esp, %eax
-
-        pushl $0x23 // user data segment
-        //pushl $0x8fff000-3*32 //%eax  // current stack
-        pushl $0xe0000000-3*32 //%eax  // current stack (3 values will be poped)
-        pushf	    // 
-
-        // http://x86.renejeschke.de/html/file_module_x86_id_145.html
-        //mov $0x200, %eax
-	//push %eax	    // eflags image
-        pushl $0x1B	    // return code segment selector
-        push %edx	    // return instruction pointer
-
-        iret
-
-	jmp . // never to be reached
-
-
- 
-
-- 
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