similar to: [LLVMdev] How to compile a linux module into .bc file using clang or llvm command?

Yeah, but I tried that command and error message was generated: hellomodule.c:1:10: fatal error: 'linux/init.h' file not found #include <linux/init.h> ^ 1 error generated. how to solve this problem?? Thanks! -- 祝好！ 甄凯 ------------------------------------------------------------------------------------------------------ 2012-04-12

It's actually is .c file. I just want firstly to compile helloworldmodule.c into helloworldmodule.bc. Then I run a LLVM pass on it to do some optimization, and then I compile the modified .bc file into .ko file. So, could you tell me how to compile helloworldmodule.c into helloworldmodule.bc? I think it's not the same command "clang -O3 -emit-llvm hello.c -c -o hello.bc".

Ok, that makes sense! That is to say, I don't need a makefile (in which to specify the path to kernel) to compile it. Just a clang command with some option will do it, right? -- 祝好！ 甄凯 ------------------------------------------------------------------------------------------------------ 2012-04-12

On 4/11/12 8:25 PM, 15102925731 wrote: > Yeah, but I tried that command and error message was generated: > > hellomodule.c:1:10: fatal error: 'linux/init.h' file not found > #include <linux/init.h> > ^ > 1 error generated. > > how to solve this problem?? Well, you do have to include all the -I and -D options so that clang can find the Linux kernel header

On 4/10/12 10:11 PM, 15102925731 wrote: > It's actually is .c file. > I just want firstly to compile helloworldmodule.c into > helloworldmodule.bc. > Then I run a LLVM pass on it to do some optimization, and then I > compile the modified .bc file into .ko file. > > So, could you tell me how to compile helloworldmodule.c into > helloworldmodule.bc? I think it's

2012/4/10 15102925731 <zhenkaixd at 126.com> > Hi, my friends > > > I know there is a difference between compiling a linux module and a simple > helloworld programme. > If I compile a helloworld.c file, the command is > *"clang -O3 -emit-llvm hello.c -c -o hello.bc"* > But what the command should be if I want to compile a linux module into a > .bc file?

Hi, Nick I think that's the question. I just don't know what's the command line that can tell clang to find the linux head file like a makefile will do. Please help me! -- 祝好！ 甄凯 ------------------------------------------------------------------------------------------------------ 2012-04-12

Wow that's to much output information. Maybe I can put it in this way. Could you tell me the clang option that can include the linux kernel headers??? Something like "clang -O3 -isystem /lib/modules/`uname -r`/build/include -emit-llvm hellomodule.c -c -o hellomodule.bc" Thank you! -- 祝好！ 甄凯

Hello， What option should be added in the clang command to compile linux device driver（from .c to .bc）? Typically we need a makefile to compile a module. But I just want a simple command line. I tried "clang -O3 -emit-llvm hello.c -c -o hello.bc " but errors occurred saying fatal error: 'linux/init.h' file not found #include <linux/init.h> ^ 1 error generated

15102925731 wrote: > Hi, Nick > I think that's the question. I just don't know what's the command line > that can tell clang to find the linux head file like a makefile will do. > Please help me! In the linux kernel, "make V=1" will compile verbosely, printing out each command it runs. Each .o file produced will have its own command-line (many of them will be

15102925731 wrote: > Hello�� > > What option should be added in the clang command to compile linux device > driver��from .c to .bc��? > Typically we need a makefile to compile a module. But I just want a > simple command line. Make, using the information in the Makefile, runs gcc or clang with a long command line. That command line tells gcc/clang how to do things, like where

My friends, I ran a function pass on a .bc file, intending to insert a CallInst to my self-made check function. The compilation is successful. BUT after I ran that pass on the .bc file, the size of the file didn't get any bigger!! Does this mean my instrumentation work failed?? BTW the opt command I use is "opt -load ../../../Debug+Asserts/lib/Hello.so -hello <hello.bc> -o

Hi all, I want to run a function pass on a certain .bc file. In the process, the pass will insert a check function into the .bc file. I know the .bc file is regarded as a module in LLVM. So, there are two basic steps needed to be done, 1, Use the "getOrInsertFunction"API to add a declaration of the extern "check function". 2, Use the "insertBefore"API to insert the

Thanks for your help and patience! Best regards, Zhen Kai At 2012-04-16 15:35:25,"陳韋任" <chenwj at iis.sinica.edu.tw> wrote: >> The thing is that I know the Makefile to complete that task. But what I want to know the clang command that can do that. Since the makefile will generate a .ko file while I can use the clang command "-O3-emit-llvm" to generate a

Hi, I don't think the code you pasted can be the correct code, where does FibF come from? Anyway, the problem is that you're calling the FibF from Module A, however you defined it for Module B. You need to insert the FibF function into the Module that you're running. To do this override "virtual bool doInitialization(Module &M);" and insert FibF into M. Joey 2012/4/9

I figured that my opt command is wrong! How to specify the output file anyway?? if I want hello.bc to be input file and newhello.bc to be output file, is the opt command go like this? opt -load ../../../Debug+Asserts/lib/Hello.so -hello <hello.bc> -o newhello.bc ?? -- 祝好！ 甄凯

Dear Chen, I tried the command you told me. It turns out that clang use -I option rather then -isystem. But after I included the init.h file, it fired at me that "asm/processor.h" is not fount. Then I included that file using -I option and some other files were said not found! It's like I opened a can of worms... I can still continue to include the file that is said not found. But

I may try to use the Makefile then. When using gcc the Makefile is CC := colorgcc obj-m := hello.o KERNELDIR := /lib/modules/2.6.36.1/build PWD := $(shell pwd) modules: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules #modules install: # $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install How to change it so the generating result is .bc file not the .o file? PLEASE BE KIND AND HELP ME~~ --

Objects that form the IR (functions, basic blocks, instructions) have the getParent() method that returns their paren (module for a function, basic block for a single instruction etc.) BTW, LLVM Doxygen is really helpful. It's usually the first result when you search for "LLVM <classname> class reference" On Tue, Apr 10, 2012 at 11:17 AM, 15102925731 <zhenkaixd at

Hi, I am instrumenting a piece of code. I want to insert a function call at the interested area, and do something in the called function which is written by myself. I have succeed on implementing the pass, and getting the instrmented code. However, I am not sure where to put this function, and what kind of linkage I should use for this function. Currently I use External linkage which is