Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c
new file mode 100644
index 00000000..bd80a7b0
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c
@@ -0,0 +1,49 @@
+/** @file
+  Set error flag for all division functions
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+/**
+  Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
+  generates a 64-bit unsigned result and an optional 32-bit unsigned remainder.
+
+  This function divides the 64-bit unsigned value Dividend by the 32-bit
+  unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
+  is not NULL, then the 32-bit unsigned remainder is returned in Remainder.
+  This function returns the 64-bit unsigned quotient.
+
+  @param  Dividend  A 64-bit unsigned value.
+  @param  Divisor   A 32-bit unsigned value.
+  @param  Remainder A pointer to a 32-bit unsigned value. This parameter is
+                    optional and may be NULL.
+
+  @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+InternalMathDivRemU64x32 (
+  IN      UINT64                    Dividend,
+  IN      UINT32                    Divisor,
+  OUT     UINT32                    *Remainder
+  )
+{
+  _asm {
+    mov     ecx, Divisor
+    mov     eax, dword ptr [Dividend + 4]
+    xor     edx, edx
+    div     ecx
+    push    eax
+    mov     eax, dword ptr [Dividend + 0]
+    div     ecx
+    mov     ecx, Remainder
+    jecxz   RemainderNull                      // abandon remainder if Remainder == NULL
+    mov     [ecx], edx
+RemainderNull:
+    pop     edx
+  }
+}
+