Cleaned unicorn speedtest sample README

unicorn_mode/samples/speedtest/README.md

@@ -6,6 +6,10 @@ to show the raw speed of C, Rust, and Python harnesses.
 ## Compiling...
 
 Make sure you built unicornafl first (`../../build_unicorn_support.sh`).
+Build the target using the provided Makefile.
+This will also run the [./get_offsets.py](./get_offsets.py) script,
+which finds some relevant addresses in the target binary using `objdump`,
+and dumps them to different files.
 Then, follow these individual steps:
 
 ### Rust
@@ -34,39 +38,3 @@ cd python
 ## Results
 
 TODO: add results here.
-
-## Compiling speedtest_target.c
-
-You shouldn't need to compile simple_target.c since a X86_64 binary version is
-pre-built and shipped in this sample folder. This file documents how the binary
-was built in case you want to rebuild it or recompile it for any reason.
-
-The pre-built binary (simple_target_x86_64.bin) was built using -g -O0 in gcc.
-
-Then load the binary and execute the main function directly.
-
-## Addresses for the harness
-
-To find the address (in hex) of main, run:
-
-```bash
-objdump -M intel -D target | grep '<main>:' | cut -d" " -f1
-```
-
-To find all call sites to magicfn, run:
-
-```bash
-objdump -M intel -D target | grep '<magicfn>$' | cut -d":" -f1
-```
-
-For malloc callsites:
-
-```bash
-objdump -M intel -D target | grep '<malloc@plt>$' | cut -d":" -f1
-```
-
-And free callsites:
-
-```bash
-objdump -M intel -D target | grep '<free@plt>$' | cut -d":" -f1
-```