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* [patch v2] MdePkg/BaseSafeIntLib: Fix VS2015 IA32 NOOPT build failure
@ 2018-02-27  1:47 Dandan Bi
  2018-02-27  9:34 ` Laszlo Ersek
  2018-02-28  2:19 ` Gao, Liming
  0 siblings, 2 replies; 3+ messages in thread
From: Dandan Bi @ 2018-02-27  1:47 UTC (permalink / raw)
  To: edk2-devel; +Cc: Laszlo Ersek, Liming Gao, Michael Kinney

v2: Add [LibraryClasses] section in INF file and refine coding style.

There are VS2015 NOOPT IA32 build failure like below in BaseSafeIntLib.
XXX.lib(XXX.obj): error LNK2001: unresolved external symbol __allmul
XXX.lib(XXX.obj): error LNK2001: unresolved external symbol __allshl
XXX.lib(XXX.obj): error LNK2001: unresolved external symbol __aullshr

This patch replaces direct shift/multiplication of 64-bit integer
with related function call to fix these failure.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
---
 MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf | 3 +++
 MdePkg/Library/BaseSafeIntLib/SafeIntLib.c       | 9 +++++----
 MdePkg/Library/BaseSafeIntLib/SafeIntLib32.c     | 3 ++-
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf b/MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
index 20a83ed..8fbdafe 100644
--- a/MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
+++ b/MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
@@ -54,5 +54,8 @@
 [Sources.EBC]
   SafeIntLibEbc.c
 
 [Packages]
   MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  BaseLib
diff --git a/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c b/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c
index c5f13d7..e96327d 100644
--- a/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c
+++ b/MdePkg/Library/BaseSafeIntLib/SafeIntLib.c
@@ -26,10 +26,11 @@
 
 **/
 
 #include <Base.h>
 #include <Library/SafeIntLib.h>
+#include <Library/BaseLib.h>
 
 
 //
 // Magnitude of MIN_INT64 as expressed by a UINT64 number.
 //
@@ -3371,12 +3372,12 @@ SafeUint64Mult (
   // a * c must be 0 or there would be bits in the high 64-bits
   // a * d must be less than 2^32 or there would be bits in the high 64-bits
   // b * c must be less than 2^32 or there would be bits in the high 64-bits
   // then there must be no overflow of the resulting values summed up.
   //
-  DwordA = (UINT32)(Multiplicand >> 32);
-  DwordC = (UINT32)(Multiplier >> 32);
+  DwordA = (UINT32)RShiftU64 (Multiplicand, 32);
+  DwordC = (UINT32)RShiftU64 (Multiplier, 32);
 
   //
   // common case -- if high dwords are both zero, no chance for overflow
   //
   if ((DwordA == 0) && (DwordC == 0)) {
@@ -3407,11 +3408,11 @@ SafeUint64Mult (
         if ((ProductBC & 0xffffffff00000000) == 0) {
           //
           // now sum them all up checking for overflow.
           // shifting is safe because we already checked for overflow above
           //
-          if (!RETURN_ERROR (SafeUint64Add (ProductBC << 32, ProductAD << 32, &UnsignedResult))) {
+          if (!RETURN_ERROR (SafeUint64Add (LShiftU64 (ProductBC, 32), LShiftU64 (ProductAD, 32), &UnsignedResult))) {
             //
             // b * d
             //
             ProductBD = (((UINT64)DwordB) *(UINT64)DwordD);
 
@@ -4073,11 +4074,11 @@ SafeInt32Mult (
   IN  INT32  Multiplicand,
   IN  INT32  Multiplier,
   OUT INT32  *Result
   )
 {
-  return SafeInt64ToInt32 (((INT64)Multiplicand) *((INT64)Multiplier), Result);
+  return SafeInt64ToInt32 (MultS64x64 (Multiplicand, Multiplier), Result);
 }
 
 /**
   INT64 multiplication
 
diff --git a/MdePkg/Library/BaseSafeIntLib/SafeIntLib32.c b/MdePkg/Library/BaseSafeIntLib/SafeIntLib32.c
index 18bfb9e..ce66a92 100644
--- a/MdePkg/Library/BaseSafeIntLib/SafeIntLib32.c
+++ b/MdePkg/Library/BaseSafeIntLib/SafeIntLib32.c
@@ -26,10 +26,11 @@
 
 **/
 
 #include <Base.h>
 #include <Library/SafeIntLib.h>
+#include <Library/BaseLib.h>
 
 /**
   INT32 -> UINTN conversion
 
   Converts the value specified by Operand to a value specified by Result type
@@ -547,8 +548,8 @@ SafeIntnMult (
   IN  INTN  Multiplicand,
   IN  INTN  Multiplier,
   OUT INTN  *Result
   )
 {
-  return SafeInt64ToIntn (((INT64)Multiplicand) *((INT64)Multiplier), Result);
+  return SafeInt64ToIntn (MultS64x64 (Multiplicand, Multiplier), Result);
 }
 
-- 
1.9.5.msysgit.1



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2018-02-27  1:47 [patch v2] MdePkg/BaseSafeIntLib: Fix VS2015 IA32 NOOPT build failure Dandan Bi
2018-02-27  9:34 ` Laszlo Ersek
2018-02-28  2:19 ` Gao, Liming

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