Changeset 59482 in vbox for trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-mode-CpuDetect.asm

Timestamp:

Jan 26, 2016 3:02:43 PM (9 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

105244

Message:

bs3kit: More CPU detection stuff. Compile for 8086 by default.

File:

• trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-mode-CpuDetect.asm (modified) (3 diffs)

trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-mode-CpuDetect.asm

@@ -27 +27 @@
 %include "bs3kit-template-header.mac"
 
-%define BS3CPU_8086             1
-%define BS3CPU_V20              2
-%define BS3CPU_80186            3
-%define BS3CPU_80286            4
-%define BS3CPU_80386            5
-%define BS3CPU_80486            6
-%define BS3CPU_80486            7
-%define BS3CPU_Pentium          8
-%define BS3CPU_PPro             9
-%define BS3CPU_PProOrNewer      10
-%define BS3CPU_F_CPUID          0x80
-
+BS3_EXTERN_DATA16 g_uBs3CpuDetected
+TMPL_BEGIN_TEXT
 
 ;;
@@ -215 +205 @@
         mov     xAX, BS3CPU_PProOrNewer | BS3CPU_F_CPUID
 
-        ;
-        ; Epilogue.
-        ;
 CPU 8086
 .return:
+        ;
+        ; Save the return value.
+        ;
+        BS3_ONLY_16BIT_STMT push    ds
+        BS3_ONLY_16BIT_STMT mov     bx, seg g_uBs3CpuDetected
+        BS3_ONLY_16BIT_STMT mov     ds, bx
+        mov     [g_uBs3CpuDetected], ax
+        BS3_ONLY_16BIT_STMT pop     ds
+
+        ;
+        ; Epilogue.
+        ;
         popf
         pop     xBX
@@ -225 +224 @@
         pop     xCX
         pop     xBP
-;; @todo cache the return value.
         ret
 BS3_PROC_END_MODE   Bs3EnteredMode