feat: Add initial support for rust runtime

Cargo.toml

@@ -11,6 +11,8 @@ edition = "2021"
 #plonky2_util = { path = "../plonky2/util" }
 #plonky2_maybe_rayon = { path = "../plonky2/maybe_rayon" }
 
+bincode = "1.3.3"
+
 plonky2 = { git = "https://github.com/zkMIPS/plonky2.git", branch = "zkm_dev" }
 #starky = { git = "https://github.com/zkMIPS/plonky2.git", branch = "zkm_dev" }
 plonky2_util = { git = "https://github.com/zkMIPS/plonky2.git", branch = "zkm_dev" }

examples/README.md

@@ -38,4 +38,36 @@ BASEDIR=test-vectors RUST_LOG=info BLOCK_NO=13284491 SEG_FILE_DIR="/tmp/output"
  cargo run --release --example zkmips aggregate_proof_all
 ```
 
+- run bench
+
+ - download/install toolchain for mips
+
+ ```
+ wget http://musl.cc/mips-linux-muslsf-cross.tgz
+ tar -zxvf mips-linux-muslsf-cross.tgz
+ ```
+
+ - modify ~/.cargo/config:
+
+ ```
+ [target.mips-unknown-linux-musl]
+ linker = <path-to>/mips-linux-muslsf-gcc"
+ rustflags = ["--cfg", 'target_os="zkvm"',"-C", "target-feature=+crt-static", "-C", "link-arg=-g"]
+ ```
+
+ - build sha2
+
+ ```
+ cd examples/sha2
+ cargo build --target=mips-unknown-linux-musl
+ cd ../../
+ ```
+
+ - run bench
+
+ ```
+ RUST_LOG=info ELF_PATH=examples/sha2/target/mips-unknown-linux-musl/debug/sha2-bench SEG_OUTPUT=/tmp/output cargo run --release --example zkmips bench
+ ```
+
 Basically, you can run the example on a 32G RAM machine, if you get OOM error, please read https://github.com/zkMIPS/zkm/issues/97.
+