diff options
| author | Ruiyu Ni <ruiyu.ni@intel.com> | 2015-01-20 08:46:31 +0000 |
|---|---|---|
| committer | niruiyu <niruiyu@Edk2> | 2015-01-20 08:46:31 +0000 |
| commit | d9044ec5553c946e20154b7b5c61cd3979472f60 (patch) | |
| tree | cbe2b29bd84274d87dae2df4c43dbdeae8e54cde /SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm | |
| parent | 6a39a6a1a8a35a84e4e13900a2b5e8da1b6435f2 (diff) | |
| download | edk2-d9044ec5553c946e20154b7b5c61cd3979472f60.tar.gz edk2-d9044ec5553c946e20154b7b5c61cd3979472f60.tar.bz2 edk2-d9044ec5553c946e20154b7b5c61cd3979472f60.zip | |
Use RLE (Run Length Encoding) to improve debugging performance.
DEBUG_AGENT_REVISION is DEBUG_AGENT_REVISION_03 to disable this feature and will be changed to DEBUG_AGENT_REVISION_04 when new version of HOST is released.
Reduce the stack usage by re-using the same buffer to send/receive packet.
Zero out the buffer before fxsave so that the reserved field in the buffer remains 0 for better RLE compression ratio.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16628 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm')
| -rw-r--r-- | SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm index 2aaf5b7b4c..377ade7c3b 100644 --- a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm +++ b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/Ia32/AsmFuncs.asm @@ -1,6 +1,6 @@ ;------------------------------------------------------------------------------
;
-; Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
@@ -302,17 +302,22 @@ NoExtrPush: mov eax, dr0
push eax
+ ;; Clear Direction Flag
+ cld
+
;; FX_SAVE_STATE_IA32 FxSaveState;
- sub esp, 512
- mov edi, esp
+ sub esp, 512
+ mov edi, esp
+ ;; Clear the buffer
+ xor eax, eax
+ mov ecx, 128 ;= 512 / 4
+ rep stosd
+ mov edi, esp
db 0fh, 0aeh, 00000111y ;fxsave [edi]
- ;; save the exception data
+ ;; save the exception data
push dword ptr [ebp + 8]
- ;; Clear Direction Flag
- cld
-
; call the C interrupt process function
push esp ; Structure
push ebx ; vector
@@ -323,7 +328,7 @@ NoExtrPush: add esp, 4
;; FX_SAVE_STATE_IA32 FxSaveState;
- mov esi, esp
+ mov esi, esp
db 0fh, 0aeh, 00001110y ; fxrstor [esi]
add esp, 512
|