Changeset 40070 in vbox

Timestamp:

Feb 10, 2012 7:47:10 PM (13 years ago)

Author:

vboxsync

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

76204

Message:

More experiments / tests.

File:

• trunk/src/VBox/VMM/testcase/tstX86-1A.asm (modified) (2 diffs)

trunk/src/VBox/VMM/testcase/tstX86-1A.asm

@@ -144 +144 @@
         cmp     eax, (%1)
         je      %%ok
-        int3
+        ;int3
         lea     eax, [eax + __LINE__ * 100000]
         jmp     .return
@@ -1498 +1498 @@
         fnclex
 
+        ;
+        ; #PF vs previous stack overflow. I.e. whether pending FPU exception
+        ; is checked before fetching memory operands.
+        ;
+        mov     dword [xSP], X86_FCW_PC_64 | X86_FCW_RC_NEAREST
+        fldcw   [xSP]
+        fld     qword REF(.r64V1)
+        ShouldTrap X86_XCPT_MF, fld     dword [xDI]
+        fnclex
+
+        ;
+        ; What happens when we unmask an exception and fwait?
+        ;
+        mov     dword [xSP], X86_FCW_PC_64 | X86_FCW_RC_NEAREST | X86_FCW_IM
+        fldcw   [xSP]
+        fld     dword [xSI]
+        fwait
+        FpuCheckFSW X86_FSW_IE | X86_FSW_SF | X86_FSW_C1, X86_FSW_C0 | X86_FSW_C2 | X86_FSW_C3
+        mov     dword [xSP], X86_FCW_PC_64 | X86_FCW_RC_NEAREST
+        fldcw   [xSP]
+        FpuCheckFSW X86_FSW_ES | X86_FSW_B | X86_FSW_IE | X86_FSW_SF | X86_FSW_C1, X86_FSW_C0 | X86_FSW_C2 | X86_FSW_C3
+
+        ShouldTrap X86_XCPT_MF, fwait
+        ShouldTrap X86_XCPT_MF, fwait
+        ShouldTrap X86_XCPT_MF, fwait
+        fnclex
+
 
 .success: