README.md

---
license: apache-2.0
datasets:
- dyngnosis/function_names_v2
---

A simple Phi-2 model fine-tuned on a function identification task of disassembled binary functions. It will output function names as a JSON object. You can use the following code to identify a function name:

```python
from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

model = AutoModelForCausalLM.from_pretrained(
    "seanmor5/phi-2-function-identification",
    attn_implementation="flash_attention_2",
    torch_dtype=torch.bfloat16,
)
model.to(torch.device("cuda"))
tokenizer = AutoTokenizer.from_pretrained("seanmor5/phi-2-function-identification")

def prompt(code):
    return (
        "Input: Given the following disassembled code, provide a descriptive"
        + " function name for the code. Your function name should"
        + " accurately describe the purpose of the code. It should"
        + " be formatted in C style with lowercase and snakecase."
        + f" Only output the name as valid JSON, e.g. {json.dumps({'name': 'function_name'})}"
        + f"\nCode: {code}\nOutput:"
    )

def identify_function(code):
    eos_tokens = tokenizer.convert_tokens_to_ids(['"}', "<|endoftext|>"])
    inputs = tokenizer(prompt(func), return_tensors="pt")
    inputs.to(torch.device("cuda"))

    outputs = model.generate(**inputs, max_new_tokens=64, eos_token_id=eos_tokens)
    text = tokenizer.batch_decode(outputs[:, inputs["input_ids"].shape[1] :])[0]
    return text

func = """
void fcn.140030b80(ulong param_1, ulong param_2, ulong param_3) {
    ulong uVar1; uVar1 = fcn.140030ae0(param_3);
    fcn.14002efc0(param_1, param_2, uVar1); return;
}
"""

print(identify_function(func))
```

The model tends to repeat itself excessively, so you should set the EOS token to `"}` when generating.