Changeset 105571 in vbox

Timestamp:

Aug 1, 2024 6:22:45 PM (4 months ago)

Author:

vboxsync

Message:

VMM/IEMAllN8veHlpA.asm: Build fix and adjustments for iemNativeFpCtrlRegRestore. bugref:10652

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllN8veHlpA.asm (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAllN8veHlpA.asm

@@ -287 +287 @@
 ; @param    uRegFpCtrl  (gcc:rdi, msc:rcx)  The MXCSR value to restore.
 ;
+; @todo r=bird: could use the _mm_setcsr() intrinsic instead...
+;
 ALIGNCODE(16)
 BEGINPROC   iemNativeFpCtrlRegRestore
-        sub     xSP, 4
-%ifdef RT_OS_WINDOWS
-        mov     [xSP], edx
-%else
-        mov     [xSP], edi
-%endif
-
+SEH64_END_PROLOGUE
+
+%ifdef RT_OS_WINDOWS
+        mov     [xSP + xCB], edi            ; use the first parameter spill slot.
+        ldmxcsr [xSP + xCB]
+%else
+        push    xDI
         ldmxcsr [xSP]
-        add     xSP, 4
+        add     xSP, xCB
+%endif
+
         ret
 ENDPROC     iemNativeFpCtrlRegRestore