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path: root/MdeModulePkg/Universal/DebugPortDxe/DebugPort.c
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2017-04-27MdeModulePkg: Move to new locationGuo Mang
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Guo Mang <mang.guo@intel.com>
2017-03-06MdeModulePkg: Refine type cast for pointer subtractionHao Wu
For pointer subtraction, the result is of type "ptrdiff_t". According to the C11 standard (Committee Draft - April 12, 2011): "When two pointers are subtracted, both shall point to elements of the same array object, or one past the last element of the array object; the result is the difference of the subscripts of the two array elements. The size of the result is implementation-defined, and its type (a signed integer type) is ptrdiff_t defined in the <stddef.h> header. If the result is not representable in an object of that type, the behavior is undefined." In our codes, there are cases that the pointer subtraction is not performed by pointers to elements of the same array object. This might lead to potential issues, since the behavior is undefined according to C11 standard. Also, since the size of type "ptrdiff_t" is implementation-defined. Some static code checkers may warn that the pointer subtraction might underflow first and then being cast to a bigger size. For example: UINT8 *Ptr1, *Ptr2; UINTN PtrDiff; ... PtrDiff = (UINTN) (Ptr1 - Ptr2); The commit will refine the pointer subtraction expressions by casting each pointer to UINTN first and then perform the subtraction: PtrDiff = (UINTN) Ptr1 - (UINTN) Ptr2; Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Feng Tian <feng.tian@intel.com>
2014-02-11Fix incorrect return status in InitializeDebugPortDriver() & ↵Tian, Feng
DebugPortSupported(). Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Tian, Feng <feng.tian@intel.com> Reviewed-by: Li, Elvin <elvin.li@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15217 6f19259b-4bc3-4df7-8a09-765794883524
2014-01-11Fix GCC build failure.Ruiyu Ni
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15098 6f19259b-4bc3-4df7-8a09-765794883524
2014-01-10Fix a bug in DebugPort driver's Unload() that leaves the ↵Ruiyu Ni
DriverBinding/ComponentName(2) installed. Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15087 6f19259b-4bc3-4df7-8a09-765794883524
2012-03-15MdeModulePkg/DebugPortDxe: Fixed the ordering of the EFI_DEBUGPORT_PROTOCOL ↵oliviermartin
entries The DebugPortRead and DebugPortWrite entries are reversed in the initialization of the EFI_DEBUGPORT_PROTOCOL structure (compare to the EFI_DEBUGPORT_PROTOCOL definition and the UEFI spec). Signed-off-by: oliviermartin Reviewed-by: rsun3 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13102 6f19259b-4bc3-4df7-8a09-765794883524
2010-04-24Update the copyright notice formathhtian
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10418 6f19259b-4bc3-4df7-8a09-765794883524
2009-03-10Fix the bug in DebugPort on error reporting.xli24
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7843 6f19259b-4bc3-4df7-8a09-765794883524
2008-12-301. Use Mde library for Debug Port Modulevanjeff
2. Minimum changed for Debug Support Module. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7153 6f19259b-4bc3-4df7-8a09-765794883524
2008-12-171. add some comments.vanjeff
2. remove unnecessary protocol declaration in inf file. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7059 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-21using the exact device path DEBUGPORT_DEVICE_PATH.vanjeff
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6670 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-21Code scrub for DebugPortDxe.vanjeff
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6665 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-111, Add <Library/DevicePathLib.h> for all source that use device path utility ↵klu2
macros 2, Add DevicePathLib library class to module's INF that use device path utility macros git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6456 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-05ECC clean up.vanjeff
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6405 6f19259b-4bc3-4df7-8a09-765794883524
2008-11-04ECC clean up for DebugPort Module.vanjeff
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6363 6f19259b-4bc3-4df7-8a09-765794883524
2008-10-30Patch to remove STATIC modifier. This is on longer recommended by EFI ↵jji4
Framework coding style. All duplicated symbols has been renamed accordingly. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6296 6f19259b-4bc3-4df7-8a09-765794883524
2008-04-10apply for doxgen format.vanjeff
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5038 6f19259b-4bc3-4df7-8a09-765794883524
2007-11-22Clean up: update "EFI" to "UEFI" if applicable.qhuang8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4317 6f19259b-4bc3-4df7-8a09-765794883524
2007-09-30Update to support to produce Component Name and & Component Name 2 protocol ↵qhuang8
based on Feature flag PcdComponentNameDisable & PcdComponentName2Disable. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4004 6f19259b-4bc3-4df7-8a09-765794883524
2007-07-03Add DebugPort & DebugSupport driversqhuang8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3018 6f19259b-4bc3-4df7-8a09-765794883524
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