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llvmbc-dump's Introduction

llvmbc dump

Simple tool that extracts LLVM bitcode modules from ELF binaries compiled with "-fembed-bitcode".

Compile

mkdir build cd build cmake .. make

Usage

src/llvmbc-dump tests/src/test

[xigh@bsd64 ~/src/llvmbc-dump/build]$ ./src/llvmbc-dump tests/src/test 
file size: 32144
module: /home/xigh/src/llvmbc-dump/tests/src/main.c / x86_64-unknown-freebsd12.0 / e-m:e-i64:64-f80:128-n8:16:32:64-S128
	F: main: i32 (i32, i8**)*
	D: foo: i32 (...)*
	D: bar: i32 (...)*
module: /home/xigh/src/llvmbc-dump/tests/lib/foo.c / x86_64-unknown-freebsd12.0 / e-m:e-i64:64-f80:128-n8:16:32:64-S128
	F: foo: i32 ()*
module: /home/xigh/src/llvmbc-dump/tests/lib/bar.c / x86_64-unknown-freebsd12.0 / e-m:e-i64:64-f80:128-n8:16:32:64-S128
	F: bar: i32 ()*

TODO

  • Test it on bigger projects
  • finish analyzeFn

Copyright

BSD

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