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authorStar Zeng <star.zeng@intel.com>2017-12-27 17:24:04 +0800
committerStar Zeng <star.zeng@intel.com>2018-01-02 09:35:48 +0800
commitbb207f6cda96640d1df0fd573689ca6764e48db4 (patch)
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parent7dbc50bd244d95fdc1741b9cfc561f0bfd724de1 (diff)
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UefiCpuPkg CpuExceptionHandlerLib: Enhance DumpModuleImageInfo()
Enhance DumpModuleImageInfo() for page fault with I/D set. If it is page fault with I/D set, the (E/R)IP in SystemContext could not be used for DumpModuleImageInfo(), instead of, the next IP of the IP triggering this page fault could be found from stack by (E/R)SP in SystemContext. IA32 SDM: — I/D flag (bit 4). This flag is 1 if the access causing the page-fault exception was an instruction fetch. This flag describes the access causing the page-fault exception, not the access rights specified by paging. The idea comes from SmiPFHandler () in UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c and UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
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