Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / usr / libc / arch / i386 / syscall.S

diff --git a/lunaix-os/usr/libc/arch/i386/syscall.S b/lunaix-os/usr/libc/arch/i386/syscall.S
index 83320eace15b13719ee086a3c05a8c1aae5512a1..93489882745d18714bd7aa74720a3dcb16d0c3f6 100644 (file)
--- a/lunaix-os/usr/libc/arch/i386/syscall.S
+++ b/lunaix-os/usr/libc/arch/i386/syscall.S
@@ -3,9 +3,7 @@
 #define LUNAIX_SYSCALL 33
 #define regsize 4
 
-    .struct 8
-saved_registers:
-    .struct saved_registers + 5 * regsize
+    .struct  2 * regsize   # eip, ebp
 id:
     .struct id + regsize
 a1:
@@ -21,29 +19,26 @@ a5:
 .section .text
     .type do_lunaix_syscall, @function
     .global do_lunaix_syscall
+
     do_lunaix_syscall:
         push %ebp
         movl %esp, %ebp
 
         pushl %ebx
-        pushl %ecx
-        pushl %edx
         pushl %edi
         pushl %esi
-        
-        movl id(%esp), %eax
-        movl a1(%esp), %ebx
-        movl a2(%esp), %ecx
-        movl a3(%esp), %edx
-        movl a4(%esp), %edi
-        movl a5(%esp), %esi
+
+        movl id(%ebp), %eax
+        movl a1(%ebp), %ebx
+        movl a2(%ebp), %ecx
+        movl a3(%ebp), %edx
+        movl a4(%ebp), %edi
+        movl a5(%ebp), %esi
         
         int $LUNAIX_SYSCALL
 
         popl %esi
         popl %edi
-        popl %edx
-        popl %ecx
         popl %ebx
 
         leave