From 4404fa9b3d98646f942e32146722a9d0a68edc13 Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Thu, 23 Aug 2018 03:20:56 +0200
Subject: never ending struggle with forking

---
 asm/int_syscall_handler.asm | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

(limited to 'asm/int_syscall_handler.asm')

diff --git a/asm/int_syscall_handler.asm b/asm/int_syscall_handler.asm
index a26592f..4031f3d 100644
--- a/asm/int_syscall_handler.asm
+++ b/asm/int_syscall_handler.asm
@@ -148,29 +148,31 @@ call_exit:
     ;;;;
 
 call_fork:
+    
+    pusha		;Push all standard registers
 
-    cli
-
-    pusha          ;Push all standard registers
-
-    mov ebx, esp	;save current stack pointer in esp
-    mov esp, 0x7000	;now put the stack outside of virtual memory in kernel space!
+    push ds
+    push es
+    push fs
+    push gs
 
+    mov ebx, esp     ; pass it in
     push ebx
     call task_fork ;Call C code
-    mov [pid],eax
+    pop ebx
 
-    mov esp, ebx   ;Replace the stack with what the C code gave us
-    
+    pop ds
+    pop es
+    pop fs
+    pop gs
+
+    mov [pid],eax    ; save return val, so it survives popa
 
     popa           ;Put the standard registers back
 
     mov ebx,[pid]
 
-    sti
-
     iretd           ;Interrupt-Return
-    ;;;;
 
 call_timeofday:
     call syscall_gettimeofday
-- 
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