[ros-diffs] [tkreuzer] 52327: [ASM] - Use .586P for 16 bit code to allow privileged instructions, like lidt/lgdt. Found by ThFabba - Add a 0 byte at the end to make ML fill the file up to the required length

Author: tkreuzer
Date: Sat Jun 18 09:40:44 2011
New Revision: 52327

URL: http://svn.reactos.org/svn/reactos?rev=52327&view=rev
Log:
[ASM]
- Use .586P for 16 bit code to allow privileged instructions, like lidt/lgdt. Found by
ThFabba
- Add a 0 byte at the end to make ML fill the file up to the required length

Modified:
    trunk/reactos/boot/freeldr/freeldr/arch/realmode/i386.S
    trunk/reactos/include/asm/asm.inc

Modified: trunk/reactos/boot/freeldr/freeldr/arch/realmode/i386.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/realmode/i386.S [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/realmode/i386.S [iso-8859-1] Sat Jun 18
09:40:44 2011
@@ -88,8 +88,7 @@
 
 	/* Load IDTR with real mode value */
 #ifdef _USE_ML
-    DB 0Fh, 01h, 1Eh
-    DW rmode_idtptr
+    lidt fword ptr rmode_idtptr
 #else
 	lidt rmode_idtptr
 #endif
@@ -114,8 +113,7 @@
 
     /* Load the GDT */
 #ifdef _USE_ML
-    DB 0Fh, 01h, 16h
-    DW gdtptr
+    lgdt fword ptr gdtptr
 #else
     lgdt gdtptr
 #endif
@@ -195,7 +193,7 @@
 #include "pnp.inc"
 #include "helpers.inc"
 
-.org (FREELDR_PE_BASE - FREELDR_BASE)
+.org (FREELDR_PE_BASE - FREELDR_BASE - 1)
+.byte 0
 .endcode16
-
 END

Modified: trunk/reactos/include/asm/asm.inc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/asm/asm.inc?rev=52…
==============================================================================
--- trunk/reactos/include/asm/asm.inc [iso-8859-1] (original)
+++ trunk/reactos/include/asm/asm.inc [iso-8859-1] Sat Jun 18 09:40:44 2011
@@ -73,7 +73,7 @@
 .code16 MACRO
     ASSUME nothing
     .text SEGMENT use16
-    .586
+    .586P
 ENDM
 
 .endcode16 MACRO