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authorqhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>2006-06-22 06:08:00 +0000
committerqhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>2006-06-22 06:08:00 +0000
commit4ba61e5e2a1b3cec7faaad36c252738f6f57f8a6 (patch)
treeee885b41f6738849dbe28aa291c2e4df0d1fb98f /MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c
parentf7c3054530a4603d3d611e7433ed8768a6076909 (diff)
downloadedk2-platforms-4ba61e5e2a1b3cec7faaad36c252738f6f57f8a6.tar.xz
1. UINTN & INTN issue for EBC architecture:
The MAX_BIT of EBC will no longer be fixed to bit 63. It is defined as (1ULL << (sizeof (INTN) * 8 - 1)). Make EdkModulePkg & MdePkg EBC compiler clean: treat all EFI_STATUS error code as variable. 2. PrintLib Complete all missing ASSERT()s. Fix “\n” & “%\n” issue thanks to the clarification of MWG 0.56d. Adjust StatusString array to support EBC build. 3. BaseMemoryLib Adjust ASSERT () & function header of ComparaMem, SetMemXX, ScanMemXX to synchronize with MWG 0.56d. 4.SmbusLib Change Pec bit to bit 22 SmBusAddress to synchronize MWG 0.56d. Add ASSERT()s to check if length is illegal for SmBusBlockWrite() & SmBusProcessBlock() since it is 6 bit now. 5. PerformanceLib Rename “EdkDxePerformanceLib” & “EdkPeiPerformanceLib” to “DxePerformanceLib” & “PeiPerformanceLib” respectively. Synchronize the function header of GetPerformanceMeasurement() with MWG 0.56d. 6. BasePeCoffLoaderLib. Make PeCoffLoaderLoadImage () Assert() if ImageContext is NULL> Make PeCoffLoaderLoadImage () return RETURN_INVALID_PARAMETER if the ImageAddress in ImageContext is 0. Adjust some coding style. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@593 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c')
-rw-r--r--MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c40
1 files changed, 20 insertions, 20 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c b/MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c
index c8199d8dc3..6081bbe1b7 100644
--- a/MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c
+++ b/MdePkg/Library/BaseMemoryLibMmx/CompareMemWrapper.c
@@ -26,26 +26,25 @@
#include "MemLibInternals.h"
/**
- Compares two memory buffers of a given length.
+ Compares the contents of two buffers.
- This function compares Length bytes of SourceBuffer to Length bytes of
- DestinationBuffer. If all Length bytes of the two buffers are identical, then
- 0 is returned. Otherwise, the value returned is the first mismatched byte in
- SourceBuffer subtracted from the first mismatched byte in DestinationBuffer.
+ This function compares Length bytes of SourceBuffer to Length bytes of DestinationBuffer.
+ If all Length bytes of the two buffers are identical, then 0 is returned. Otherwise, the
+ value returned is the first mismatched byte in SourceBuffer subtracted from the first
+ mismatched byte in DestinationBuffer.
+ If Length > 0 and DestinationBuffer is NULL and Length > 0, then ASSERT().
+ If Length > 0 and SourceBuffer is NULL and Length > 0, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().
+ If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
- If DestinationBuffer is NULL and Length > 0, then ASSERT().
- If SourceBuffer is NULL and Length > 0, then ASSERT().
- If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then
- ASSERT().
- If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
- @param DestinationBuffer First memory buffer
- @param SourceBuffer Second memory buffer
- @param Length Length of DestinationBuffer and SourceBuffer memory
- regions to compare
+ @param DestinationBuffer Pointer to the destination buffer to compare.
+ @param SourceBuffer Pointer to the source buffer to compare.
+ @param Length Number of bytes to compare.
- @retval 0 if DestinationBuffer == SourceBuffer
- @retval Non-zero if DestinationBuffer != SourceBuffer
+ @return 0 All Length bytes of the two buffers are identical.
+ @retval Non-zero The first mismatched byte in SourceBuffer subtracted from the first
+ mismatched byte in DestinationBuffer.
**/
INTN
@@ -56,12 +55,13 @@ CompareMem (
IN UINTN Length
)
{
- ASSERT (DestinationBuffer != NULL);
- ASSERT (SourceBuffer != NULL);
- ASSERT (Length <= MAX_ADDRESS - (UINTN)DestinationBuffer + 1);
- ASSERT (Length <= MAX_ADDRESS - (UINTN)SourceBuffer + 1);
if (Length == 0) {
return 0;
}
+ ASSERT (DestinationBuffer != NULL);
+ ASSERT (SourceBuffer != NULL);
+ ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));
+ ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)SourceBuffer));
+
return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);
}