similar to: [LLVMdev] How to insert a self-written function to a piece of programme

Hi all, I wrote a function pass. In the pass, it ran through all the instruction that call to functions. When arriving at the exact function that I m interested in, it would insert a self-made function. Now I've finished the pass, the compilation is successful. The pass can find the function I like and can insert the CallInst to call my check function. BUT, when running the

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

That sounds like a good general plan, yes! Joey 2012/4/9 15102925731 <zhenkaixd at 126.com> > Thank you very much! > > To make it simpler, I may as well just implement the self-written "check > function" in C language instead of wrapping it in LLVM module. *According > to the hint you give me, all I need to do is as follow(?)* > > 1. Implement the

Thank you very much! To make it simpler, I may as well just implement the self-written "check function" in C language instead of wrapping it in LLVM module. According to the hint you give me, all I need to do is as follow(?) 1. Implement the "Check function" in the check.c file; 2. Add the check function into the module(the Hello1.bc file which I will run the functionPass on)

Hi, I got upset.. What does “Broken module found, compilation aborted!” mean really?? what‘s “broken module“?? -- 祝好！ 甄凯 ------------------------------------------------------------------------------------------------------ 2012-04-09 ------------------------------------------------------------------------------------------------------ Name: 甄凯(ZhenKai)

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

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， Im trying to instrument this hello function right before the instruction that call the "puts" function(the source code is as follow). Now I can compile the pass without errors, but when run the pass with opt tool, it broke down. The diagnose is something like Referencing function in another module! %CallCheck = call i32 @fib() Broken module found, compilation aborted! Does

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~~ --

BTW, the Makefile is as folllow, CC := gcc obj-m := hellomodule.o KERNELDIR := /lib/modules/`uname -r`/build PWD := $(shell pwd) modules: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules Can I use an option of clang to specify the KERNELDIR ,etc? Thank you! -- 祝好！ 甄凯 ------------------------------------------------------------------------------------------------------ 2012-04-12

Your files do not appear to implement the check() function. On Tue, Apr 10, 2012 at 4:57 PM, 15102925731 <zhenkaixd at 126.com> wrote: > Hi, my friends > > I finally insert the callInst into the hello.bc file.Then I compile the > hello.bc to hello.o file and the check.c to check.o file. And I think by > link those to .o file togetherI can get the executable ELF file(clang

Hi, my friends I finally insert the callInst into the hello.bc file.Then I compile the hello.bc to hello.o file and the check.c to check.o file. And I think by link those to .o file togetherI can get the executable ELF file(clang hello.o check.o -o finalfile). But when I link the two objective file, it said "hello.o: In function `main': hello.bc:(.text+0x69): undefined reference to

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

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

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

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

Hi all,I've been confuzed by this question for several days! I know there is Started Guild in llvm.org to tell me how tocompile helloworld.c into ,bc file. But what if it is a module that includes header files in linux?Could you be kind and tell me the clang command that can compile the following programme into a .bc file? Thank you! #include <linux/init.h> #include

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".

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