Add support for alt_bn128 syscalls (old)

program-runtime/src/compute_budget.rs

@@ -62,6 +62,13 @@ pub struct ComputeBudget {
     pub heap_cost: u64,
     /// Memory operation syscall base cost
     pub mem_op_base_cost: u64,
+    /// Number of compute units consumed to call alt_bn128_addition
+    pub alt_bn128_addition_cost: u64,
+    /// Number of compute units consumed to call alt_bn128_multiplication.
+    pub alt_bn128_multiplication_cost: u64,
+    /// Number of compute units consumed to pairing one pair of input elements.
+    /// Total cost will be one_pair_cost * (num_elems - 1)
+    pub alt_bn128_pairing_one_pair_cost: u64,
 }
 
 impl Default for ComputeBudget {
@@ -92,6 +99,9 @@ impl ComputeBudget {
             heap_size: None,
             heap_cost: 8,
             mem_op_base_cost: 10,
+            alt_bn128_addition_cost: 120,
+            alt_bn128_multiplication_cost: 200,
+            alt_bn128_pairing_one_pair_cost: 110,
         }
     }
 

programs/bpf/build.rs

@@ -60,6 +60,7 @@ fn main() {
         let rust_programs = [
             "128bit",
             "alloc",
+            "alt_bn128",
             "call_depth",
             "caller_access",
             "custom_heap",

programs/bpf_loader/Cargo.toml

@@ -11,6 +11,7 @@ edition = "2021"
 
 [dependencies]
 bincode = "1.3.3"
+bn-plus = "=0.4"
 byteorder = "1.4.3"
 log = "0.4.14"
 libsecp256k1 = "0.6.0"