[tfaber] 74656: [ACPICA] - Fix our broken support for the Windows-GCC configuration (again) by providing proper implementations of ACPI_DIV_64_BY_32 and ACPI_SHIFT_RIGHT_64. CORE-13316 #resolve

Author: tfaber
Date: Thu May 25 18:27:30 2017
New Revision: 74656

URL: http://svn.reactos.org/svn/reactos?rev=74656&view=rev
Log:
[ACPICA]
- Fix our broken support for the Windows-GCC configuration (again) by providing proper
implementations of ACPI_DIV_64_BY_32 and ACPI_SHIFT_RIGHT_64.
CORE-13316 #resolve

Modified:
    trunk/reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h

Modified: trunk/reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/bus/acpi/acpica/in…
==============================================================================
--- trunk/reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h	[iso-8859-1]
(original)
+++ trunk/reactos/drivers/bus/acpi/acpica/include/platform/acgcc.h	[iso-8859-1] Thu May 25
18:27:30 2017
@@ -126,20 +126,17 @@
 } while(0)
 
 
-/*
- * Note: This is also taken from our old adaptation.
- *       See acmsvc.h for where it came originally.
- */
-#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
-{                           \
-    q32 = n_hi / d32;       \
-    r32 = n_lo / d32;       \
+#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32)                \
+{                                                                   \
+    asm("divl %4;"                                                  \
+       
:"=a"(q32),"=d"(r32):"a"(n_lo),"d"(n_hi),"rm"(d32):"cc");
  \
 }
 
-#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
-{                           \
-    n_hi >>= 1;    \
-    n_lo >>= 1;    \
+#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo)                     \
+{                                                           \
+    asm("shrl $1, %0;"                                      \
+        "rcrl $1, %1;"                                      \
+       
:"=rm"(n_hi),"=rm"(n_lo):"0"(n_hi),"1"(n_lo):"cc");
\
 }
 
 #endif /* __REACTOS__ */