Changeset 40057 in vbox for trunk/src/VBox/VMM/testcase

Timestamp:

Feb 10, 2012 12:21:23 AM (13 years ago)

Author:

vboxsync

Message:

fpu explorations.

Location:

trunk/src/VBox/VMM/testcase

Files:

• tstX86-1.cpp (modified) (2 diffs)
• tstX86-1A.asm (modified) (2 diffs)

trunk/src/VBox/VMM/testcase/tstX86-1.cpp

@@ -71 +71 @@
 DECLASM(int32_t) x861_Test4(void);
 DECLASM(int32_t) x861_Test5(void);
+DECLASM(int32_t) x861_Test6(void);
 
 
@@ -233 +234 @@
         if (rc != 0)
             RTTestFailed(hTest, "x861_Test3 -> %d", rc);
+
         RTTestSub(hTest, "Multibyte NOPs");
         rc = x861_Test4();
         if (rc != 0)
             RTTestFailed(hTest, "x861_Test4 -> %d", rc);
+
         RTTestSub(hTest, "Odd floating point encodings");
-#endif
         rc = x861_Test5();
         if (rc != 0)
             RTTestFailed(hTest, "x861_Test5 -> %d", rc);
+#endif
+
+        RTTestSub(hTest, "Floating point exceptions ++");
+        rc = x861_Test6();
+        if (rc != 0)
+            RTTestFailed(hTest, "x861_Test6 -> %d", rc);
     }
 

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

@@ -57 +57 @@
 %define X86_XCPT_GP     13
 %define X86_XCPT_PF     14
+%define X86_XCPT_MF     16
 
 %define PAGE_SIZE       0x1000
@@ -1335 +1336 @@
 
 ;;
+; Tests some floating point exceptions and such.
+;
+BEGINPROC   x861_Test6
+        SAVE_ALL_PROLOGUE
+        sub     xSP, 1024
+
+        ; stack overflow
+        fninit
+        ;mov     dword [xSP], 037fh
+        mov     dword [xSP], 0300h
+        fldcw   [xSP]
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fld dword REF(.r32V1)
+        fwait
+
+        fld dword REF(.r32V1)
+        ShouldTrap X86_XCPT_MF, fwait
+        fnstenv [xSP]
+        and     word [xSP + 4], ~07fh
+        fldenv  [xSP]
+
+        fld dword REF(.r32V1)
+        ShouldTrap X86_XCPT_MF, fwait
+
+
+.success:
+        xor     eax, eax
+.return:
+        add     xSP, 1024
+        SAVE_ALL_EPILOGUE
+        ret
+
+.r32V1: dd 3.2
+.r64V1: dq 6.4
+.r80V1: dt 8.0
+
+ENDPROC     x861_Test6
+
+
+;;
 ; Terminate the trap info array with a NIL entry.
 BEGINDATA