Changeset 49286 in vbox for trunk

Timestamp:

Oct 25, 2013 10:09:21 AM (11 years ago)

Author:

vboxsync

Message:

BIOS: Added invalid opcode handler.

Location:

trunk/src/VBox/Devices/PC/BIOS

Files:

• Makefile.kmk (modified) (1 diff)
• invop.c (added)
• makefile (modified) (1 diff)
• notes.txt (modified) (1 diff)
• orgs.asm (modified) (3 diffs)

trunk/src/VBox/Devices/PC/BIOS/Makefile.kmk

@@ -53 +53 @@
         serial.c \
         system.c \
+        invop.c \
         timepci.c \
         ps2mouse.c \

trunk/src/VBox/Devices/PC/BIOS/makefile

@@ -31 +31 @@
 
 OBJS =  bios.obj print.obj ata.obj floppy.obj floppyt.obj eltorito.obj &
-        boot.obj keyboard.obj disk.obj serial.obj system.obj &
+        boot.obj keyboard.obj disk.obj serial.obj system.obj invop.obj &
         timepci.obj logo.obj ps2mouse.obj parallel.obj scsi.obj &
         ahci.obj apm.obj apm_pm.obj pcibios.obj pciutil.obj vds.obj &

trunk/src/VBox/Devices/PC/BIOS/notes.txt

@@ -73 +73 @@
   thinks it counts as real mode. Same ENTER/LEAVE problem as above.
 
+- AIX 1.3 is a rare user of INT 15h/89h (switch to protected mode) service.
+
+- IBM OS/2 1.0/1.1 (but not other versions!) attempt to execute a 286 LOADALL
+  instruction. LOADALL must be emulated for OS/2 to work properly. HIMEM.SYS
+  version 2.03 and later also contains 286 LOADALL code but this will not be
+  executed on 386+ processors.
+
 
  Notes on BIOS implementation

trunk/src/VBox/Devices/PC/BIOS/orgs.asm

@@ -127 +127 @@
 extrn           _keyboard_init:near
 extrn           _print_bios_banner:near
+extrn           _inv_op_handler:near
 
 
@@ -381 +382 @@
                 ;; set up various service vectors
                 ;; TODO: This should use the table at FEF3h instead
+                SET_INT_VECTOR 06h, BIOSSEG, int06_handler
                 SET_INT_VECTOR 11h, BIOSSEG, int11_handler
                 SET_INT_VECTOR 12h, BIOSSEG, int12_handler
@@ -979 +981 @@
 
 ;; --------------------------------------------------------
+;; INT 06h handler - Invalid Opcode Exception
+;; --------------------------------------------------------
+
+int06_handler:
+                pusha
+                push    es
+                push    ds
+                C_SETUP
+                call    _inv_op_handler
+                pop     ds
+                pop     es
+                popa
+                iret
+
+;; --------------------------------------------------------
 ;; INT 13h handler - Diskette service
 ;; --------------------------------------------------------