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UefiCpuPkg/PiSmmCpuDxeSmm: implement non-stop mode for SMM

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Since SMM profile feature has already implemented non-stop mode if #PF
occurred, this patch just makes use of the existing implementation to
accommodate heap guard and NULL pointer detection feature.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Jian J Wang
2018-08-20 11:35:58 +08:00
parent dcc026217f
commit 09afd9a42a
6 changed files with 137 additions and 31 deletions
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3
UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiException.nasm
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@@ -20,6 +20,7 @@
extern ASM_PFX(FeaturePcdGet (PcdCpuSmmProfileEnable))
extern ASM_PFX(SmiPFHandler)
extern ASM_PFX(mSetupDebugTrap)
global ASM_PFX(gcSmiIdtr)
global ASM_PFX(gcSmiGdtr)
@@ -673,7 +674,7 @@ o16 mov [ecx + IA32_TSS._SS], ax
mov esp, ebp
; Set single step DB# if SMM profile is enabled and page fault exception happens
cmp byte [dword ASM_PFX(FeaturePcdGet (PcdCpuSmmProfileEnable))], 0
cmp byte [dword ASM_PFX(mSetupDebugTrap)], 0
jz @Done2
; Create return context for iretd in stub function