audk/MdeModulePkg/Library/TraceHubDebugSysTLib
Michael Kubacki 33c81c25bb MdeModulePkg/TraceHubDebugSysTLib: Use wider type for loop comparisons
Resolves a new CodeQL error due to the value being incremented in the
loop being a narrower type than the variable it is being compared
against.

The variable is changed to a UINT32 type so it has the same width as
the type it is being compared against.

Issue explanation: In a loop condition, comparison of a value of a
narrow type with a value of a wide type may result in unexpected
behavior if the wider value is sufficiently large (or small). This
is because the narrower value may overflow. This can lead to an
infinite loop.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Gua Guo <gua.guo@intel.com>
Cc: Prakashan Krishnadas Veliyathuparambil <krishnadas.veliyathuparambil.prakashan@intel.com>
Cc: K N Karthik <karthik.k.n@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Gua Guo <gua.guo@intel.com>
2024-02-26 23:13:08 +00:00
..
BaseTraceHubDebugSysTLib.c MdeModulePkg/TraceHubDebugSysTLib: Use wider type for loop comparisons 2024-02-26 23:13:08 +00:00
BaseTraceHubDebugSysTLib.inf
DxeSmmTraceHubDebugSysTLib.c MdeModulePkg/TraceHubDebugSysTLib: Use wider type for loop comparisons 2024-02-26 23:13:08 +00:00
DxeSmmTraceHubDebugSysTLib.inf
InternalTraceHubApi.c MdeModulePkg/TraceHubDebugSysTLib: Use wider type for loop comparisons 2024-02-26 23:13:08 +00:00
InternalTraceHubApi.h
InternalTraceHubApiCommon.c
InternalTraceHubApiCommon.h
PeiTraceHubDebugSysTLib.c
PeiTraceHubDebugSysTLib.inf
Readme.md

Readme.md

Introduction of TrcaceHubDebugSysTLib

TrcaceHubDebugSysTLib library is a top level library for dumping Trace Hub messages. It provides Trace Hub related APIs to dump Trace Hub message via MIPI SYS-T submodule. User need to properly configure following Trace Hub related PCDs and HOB. (See MdeModulePkg.dec to get detailed definition for PCDs below)

  • PcdTraceHubDebugLevel
  • PcdEnableTraceHubDebugMsg
  • PcdTraceHubDebugMmioAddress (See TraceHubDebugInfoHob.h to get detailed definition for HOB below)
  • gTraceHubDebugInfoHobGuid

BaseTraceHubDebugSysTLib.inf

System prints Trace Hub message in SEC/PEI/DXE/SMM based on fixed PCDs. Only support single Trace Hub debug instance.

PeiTraceHubDebugSysTLib.inf

System prints Trace Hub message in PEI based on fixed PCDs and HOB. System applies Trace Hub HOB once it detect gTraceHubDebugInfoHobGuid HOB. Trace Hub PCDs will be applied if no HOB exist.

DxeSmmTraceHubDebugSysTLib.inf

System prints Trace Hub message in DXE/SMM based on fixed PCDs and HOB. Trace Hub PCDs will be applied if no HOB exist.

Note

Trace Hub debug library not support DXE_RUNTIME_DRIVER type of module currently.