Pull program stubs into SDK (#10704)

sdk/bpf/rust/test/.gitignore

@@ -1,3 +0,0 @@
-/target/
-/farf/
-Cargo.lock

sdk/bpf/rust/test/Cargo.toml

@@ -1,15 +0,0 @@
-[package]
-name = "solana-sdk-bpf-test"
-version = "1.3.0"
-description = "Solana BPF SDK test utilities"
-authors = ["Solana Maintainers <maintainers@solana.foundation>"]
-repository = "https://github.com/solana-labs/solana"
-license = "Apache-2.0"
-homepage = "https://solana.com/"
-edition = "2018"
-
-[workspace]
-members = []
-
-[package.metadata.docs.rs]
-targets = ["x86_64-unknown-linux-gnu"]

sdk/bpf/rust/test/src/lib.rs

@@ -1,32 +0,0 @@
-//! @brief Stubs for syscalls when building tests for x86
-
-#[no_mangle]
-/// # Safety
-pub unsafe fn sol_log_(message: *const u8, length: u64) {
-    let slice = std::slice::from_raw_parts(message, length as usize);
-    let string = std::str::from_utf8(&slice).unwrap();
-    std::println!("{}", string);
-}
-
-#[no_mangle]
-pub fn sol_log_64_(arg1: u64, arg2: u64, arg3: u64, arg4: u64, arg5: u64) {
-    std::println!("{} {} {} {} {}", arg1, arg2, arg3, arg4, arg5);
-}
-
-#[no_mangle]
-pub fn sol_invoke_signed_rust() {
-    std::println!("sol_invoke_signed_rust()");
-}
-
-#[macro_export]
-macro_rules! stubs {
-    () => {
-        #[test]
-        fn pull_in_externs() {
-            use $crate::*;
-            unsafe { sol_log_("sol_log_".as_ptr(), 8) };
-            sol_log_64_(1, 2, 3, 4, 5);
-            sol_invoke_signed_rust();
-        }
-    };
-}