BIOS 编译过程：C文件到EFI文件
生活随笔
收集整理的這篇文章主要介紹了
BIOS 编译过程：C文件到EFI文件
小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.
? ? 上一篇Blog介紹了exe的生成，從C 到 exe可以通過“cl /c”來編譯到“obj”，然后再“l(fā)ink”到exe。如果用到其他lib的話，還需要用“/I<dir> add to include search path”來添加相應(yīng)的lib文件。
? ? 這里我們寫了一個最精簡的Pkg，里面有個最精簡的UEFI app，用來探究C文件到EFI文件的過程。這個UEFI app 代碼只有“Hello.inf”和“Hello.c”兩個文件，使用了最少的lib，以方便看流程：
#include <Uefi.h>EFI_STATUS EFIAPI Main (IN EFI_HANDLE ImageHandle,IN EFI_SYSTEM_TABLE *SystemTable) {return EFI_SUCCESS; }? ? 用“build > log.txt”可以把build log記錄下來分析，log里面跟這個app相關(guān)的命令有以下幾條：
"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\cl.exe" /Fod:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\.\Hello.obj /nologo /arch:IA32 /c /WX /GS- /W4 /Gs32768 /D UNICODE /O1b2 /GL /FIAutoGen.h /EHs-c- /GR- /GF /Id:\udk2017_25818\AppPkgSample\Hello /Id:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG /Id:\udk2017_25818\MdePkg /Id:\udk2017_25818\MdePkg\Include /Id:\udk2017_25818\MdePkg\Include\Ia32 d:\udk2017_25818\AppPkgSample\Hello\Hello.c"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\cl.exe" /Fod:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\.\AutoGen.obj /nologo /arch:IA32 /c /WX /GS- /W4 /Gs32768 /D UNICODE /O1b2 /GL /FIAutoGen.h /EHs-c- /GR- /GF /Id:\udk2017_25818\AppPkgSample\Hello /Id:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG /Id:\udk2017_25818\MdePkg /Id:\udk2017_25818\MdePkg\Include /Id:\udk2017_25818\MdePkg\Include\Ia32 d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\AutoGen.c"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\lib.exe" /NOLOGO /LTCG /OUT:d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\Hello.lib @d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\object_files.lst"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\link.exe" /OUT:d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.dll /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /MAP /ALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /LTCG /DLL /ENTRY:_ModuleEntryPoint /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DRIVER /MERGE:.rdata=.data @d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\static_library_files.lst"GenFw" -e UEFI_APPLICATION -o d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.efi d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.dll? ? 這個過程就是EFI編譯的過程，我們來分析每一步的意義，每一個命令接收了什么東西，產(chǎn)出了什么東西，都要搞清楚。
? ? 第一步：命令"cl.exe"，輸入：Hello.c，輸出：Hello.obj. 主要參數(shù)：/Fo 生成obj文件，/c 只編譯不鏈接，/I 設(shè)定搜索目錄。如下：
"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\cl.exe" /Fod:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\.\Hello.obj /nologo /arch:IA32 /c /WX /GS- /W4 /Gs32768 /D UNICODE /O1b2 /GL /FIAutoGen.h /EHs-c- /GR- /GF /Id:\udk2017_25818\AppPkgSample\Hello /Id:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG /Id:\udk2017_25818\MdePkg /Id:\udk2017_25818\MdePkg\Include /Id:\udk2017_25818\MdePkg\Include\Ia32 d:\udk2017_25818\AppPkgSample\Hello\Hello.c? ? 第二步：命令"cl.exe"，輸入：AutoGen.c，輸出：AutoGen.obj ，如下：
"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\cl.exe" /Fod:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\.\AutoGen.obj /nologo /arch:IA32 /c /WX /GS- /W4 /Gs32768 /D UNICODE /O1b2 /GL /FIAutoGen.h /EHs-c- /GR- /GF /Id:\udk2017_25818\AppPkgSample\Hello /Id:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG /Id:\udk2017_25818\MdePkg /Id:\udk2017_25818\MdePkg\Include /Id:\udk2017_25818\MdePkg\Include\Ia32 d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\AutoGen.c? ? 第三步：命令"lib.exe"，輸入：Hello.obj&AutoGen （見objobject_files.lst），輸出：Hello.lib。如下：
"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\lib.exe" /NOLOGO /LTCG /OUT:d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\Hello.lib @d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\object_files.lst? ? 其中，object_files.lst內(nèi)容如下，可見用到了第一步的Hello.obj和第二步的AutoGen.obj：
d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/AppPkgSample/Hello/Hello/OUTPUT/Hello.obj d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/AppPkgSample/Hello/Hello/OUTPUT/AutoGen.obj? ? 第四步：命令"link.exe"，輸入：“static_library_files.lst”里面的lib文件，輸出：Hello.dll。如下：
"C:\Program Files (x86)\Microsoft Visual Studio 12.0\Vc\bin\link.exe" /OUT:d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.dll /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /MAP /ALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /LTCG /DLL /ENTRY:_ModuleEntryPoint /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DRIVER /MERGE:.rdata=.data @d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\OUTPUT\static_library_files.lst其中，static_library_files.lst內(nèi)容如下，可見用到了第三步生成的Hello.lib：
d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/BaseMemoryLib/BaseMemoryLib/OUTPUT/BaseMemoryLib.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/BasePcdLibNull/BasePcdLibNull/OUTPUT/BasePcdLibNull.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/BaseLib/BaseLib/OUTPUT/BaseLib.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull/OUTPUT/BaseDebugLibNull.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib/OUTPUT/UefiBootServicesTableLib.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint/OUTPUT/UefiApplicationEntryPoint.lib d:/udk2017_25818/Build/AppPkgSample/RELEASE_VS2013x86/IA32/AppPkgSample/Hello/Hello/OUTPUT/Hello.lib? ? 第五步：命令"GenFw"，輸入：Hello.dll，輸出：Hello.efi。如下： "GenFw" -e UEFI_APPLICATION -o d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.efi d:\udk2017_25818\Build\AppPkgSample\RELEASE_VS2013x86\IA32\AppPkgSample\Hello\Hello\DEBUG\Hello.dll總結(jié)
以上是生活随笔為你收集整理的BIOS 编译过程：C文件到EFI文件的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。
- 上一篇： 润乾报表 数据集ds1中，数据源xmg
- 下一篇： 私钥公钥学习心得（二）比特币与支付宝