bs3-cmn-SwitchTo16Bit.asm

Timestamp:

Mar 28, 2016 12:26:40 AM (9 years ago)

Author:

vboxsync

Message:

bs3kit: Optimized BS3_MODE_CODE_V86 checks.

File:

trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SwitchTo16Bit.asm

-              r60000
+              r60218
         ; Check g_bBs3CurrentMode whether we're in v8086 mode or not.
         mov     al, [BS3_DATA16_WRT(g_bBs3CurrentMode)]
+        and     al, BS3_MODE_CODE_MASK
+        cmp     al, BS3_MODE_CODE_V86
+        jne     .ret_16bit
+        test    al, BS3_MODE_CODE_V86
+        jz      .ret_16bit
         ; Switch to ring-0 if v8086 mode.

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