Add libstd support to Rust BPF (#5788)

ci/test-checks.sh

@@ -24,7 +24,7 @@ _ ci/nits.sh
 _ ci/order-crates-for-publishing.py
 _ book/build.sh
 
-for project in sdk/bpf/rust/{rust-no-std,rust-utils,rust-test} programs/bpf/rust/*/ ; do
+for project in sdk/bpf/rust/{rust-utils,rust-test} programs/bpf/rust/*/ ; do
   echo "+++ do_bpf_check $project"
   (
     cd "$project"

programs/bpf/rust/128bit/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 solana-bpf-rust-128bit-dep = { path = "../128bit_dep", version = "0.19.0-pre0" }
 
 [dev_dependencies]

programs/bpf/rust/128bit/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/128bit/src/lib.rs

@@ -1,12 +1,6 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
-#![no_std]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use solana_sdk_bpf_utils::info;
 
 #[no_mangle]

programs/bpf/rust/128bit_dep/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/128bit_dep/src/lib.rs

@@ -1,7 +1,5 @@
 //! @brief Solana Rust-based BPF program utility functions and types
 
-#![no_std]
-
 extern crate solana_sdk_bpf_utils;
 
 pub fn uadd(x: u128, y: u128) -> u128 {

programs/bpf/rust/alloc/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/alloc/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/alloc/src/lib.rs

@@ -1,24 +1,18 @@
 //! @brief Example Rust-based BPF program that test dynamic memory allocation
-#![no_std]
-#![allow(unused_attributes)]
 
 #[macro_use]
 extern crate alloc;
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
-use alloc::vec::Vec;
-use core::alloc::Layout;
-use core::mem;
 use solana_sdk_bpf_utils::info;
+use std::alloc::Layout;
+use std::mem;
 
 #[no_mangle]
 pub extern "C" fn entrypoint(_input: *mut u8) -> bool {
     unsafe {
         // Confirm large allocation fails
 
-        let layout = Layout::from_size_align(core::usize::MAX, mem::align_of::<u8>()).unwrap();
+        let layout = Layout::from_size_align(std::usize::MAX, mem::align_of::<u8>()).unwrap();
         let ptr = alloc::alloc::alloc(layout);
         if !ptr.is_null() {
             info!("Error: Alloc of very larger buffer should fail");
@@ -59,7 +53,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> bool {
         alloc::alloc::dealloc(ptr, layout);
     }
 
-    // // TODO not supported for system or bump allocator
+    // TODO not supported bump allocator
     // unsafe {
     //     // Test alloc all bytes and one more (assumes heap size of 2048)
 
@@ -93,7 +87,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> bool {
     }
 
     {
-        // TODO test Vec::new()
+        // test Vec::new()
 
         const ITERS: usize = 100;
         let mut v = Vec::new();

programs/bpf/rust/dep_crate/Cargo.toml

@@ -14,7 +14,6 @@ edition = "2018"
 [dependencies]
 byteorder = { version = "1", default-features = false }
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/dep_crate/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/dep_crate/src/lib.rs

@@ -1,12 +1,6 @@
 //! @brief Example Rust-based BPF program tests dependent crates
 
-#![no_std]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use byteorder::{ByteOrder, LittleEndian};
 use solana_sdk_bpf_utils::info;
 

programs/bpf/rust/external_spend/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/external_spend/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/external_spend/src/lib.rs

@@ -1,15 +1,8 @@
 //! @brief Example Rust-based BPF program that moves a lamport from one account to another
 
-#![no_std]
-#![allow(unreachable_code)]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
+use solana_sdk_bpf_utils::entrypoint;
 use solana_sdk_bpf_utils::entrypoint::*;
-use solana_sdk_bpf_utils::{entrypoint, info};
 
 entrypoint!(process_instruction);
 fn process_instruction(ka: &mut [SolKeyedAccount], _info: &SolClusterInfo, _data: &[u8]) -> bool {
@@ -18,6 +11,5 @@ fn process_instruction(ka: &mut [SolKeyedAccount], _info: &SolClusterInfo, _data
     // is seen by the runtime and fails as expected
     *ka[0].lamports -= 1;
 
-    info!("Success");
     true
 }

programs/bpf/rust/iter/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/iter/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/iter/src/lib.rs

@@ -1,12 +1,6 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
-#![no_std]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use solana_sdk_bpf_utils::info;
 
 #[no_mangle]

programs/bpf/rust/many_args/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 solana-bpf-rust-many-args-dep = { path = "../many_args_dep", version = "0.19.0-pre0" }
 
 [workspace]

programs/bpf/rust/many_args/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/many_args/src/lib.rs

@@ -1,14 +1,7 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
-#![no_std]
-#![allow(unused_attributes)]
-
 mod helper;
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use solana_sdk_bpf_utils::info;
 
 #[no_mangle]

programs/bpf/rust/many_args_dep/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/many_args_dep/src/lib.rs

@@ -1,9 +1,6 @@
 //! @brief Solana Rust-based BPF program utility functions and types
 
-#![no_std]
-
 extern crate solana_sdk_bpf_utils;
-
 use solana_sdk_bpf_utils::info;
 
 pub fn many_args(

programs/bpf/rust/noop/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/noop/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/noop/src/lib.rs

@@ -1,13 +1,8 @@
 //! @brief Example Rust-based BPF program that prints out the parameters passed to it
 
-#![no_std]
 #![allow(unreachable_code)]
-#![allow(unused_attributes)]
 
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use solana_sdk_bpf_utils::entrypoint::*;
 use solana_sdk_bpf_utils::log::*;
 use solana_sdk_bpf_utils::{entrypoint, info};
@@ -36,17 +31,11 @@ fn process_instruction(ka: &mut [SolKeyedAccount], info: &SolClusterInfo, data:
     sol_log_params(ka, data);
 
     {
-        // Test - arch config
-        #[cfg(not(target_arch = "bpf"))]
-        panic!();
-    }
-
-    {
-        // Test - use core methods, unwrap
+        // Test - use std methods, unwrap
 
         // valid bytes, in a stack-allocated array
         let sparkle_heart = [240, 159, 146, 150];
-        let result_str = core::str::from_utf8(&sparkle_heart).unwrap();
+        let result_str = std::str::from_utf8(&sparkle_heart).unwrap();
         assert_eq!(4, result_str.len());
         assert_eq!("💖", result_str);
         info!(result_str);
@@ -59,6 +48,12 @@ fn process_instruction(ka: &mut [SolKeyedAccount], info: &SolClusterInfo, data:
         assert_eq!(s.x + s.y + s.z, 6);
     }
 
+    {
+        // Test - arch config
+        #[cfg(not(target_arch = "bpf"))]
+        panic!();
+    }
+
     info!("Success");
     true
 }

programs/bpf/rust/panic/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/panic/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/panic/src/lib.rs

@@ -1,10 +1,5 @@
 //! @brief Example Rust-based BPF program that panics
 
-#![no_std]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
 
 #[no_mangle]

programs/bpf/rust/param_passing/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 solana-bpf-rust-param-passing-dep = { path = "../param_passing_dep", version = "0.19.0-pre0" }
 
 [dev_dependencies]

programs/bpf/rust/param_passing/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/param_passing/src/lib.rs

@@ -1,12 +1,6 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
-#![no_std]
-#![allow(unused_attributes)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use solana_bpf_rust_param_passing_dep::{Data, TestDep};
 use solana_sdk_bpf_utils::info;
 

programs/bpf/rust/param_passing_dep/Cargo.toml

@@ -13,7 +13,6 @@ edition = "2018"
 
 [dependencies]
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [dev_dependencies]
 solana-sdk-bpf-test = { path = "../../../../sdk/bpf/rust/rust-test", version = "0.19.0-pre0" }

programs/bpf/rust/param_passing_dep/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/param_passing_dep/src/lib.rs

@@ -1,8 +1,5 @@
 //! @brief Example Rust-based BPF program tests loop iteration
 
-#![no_std]
-#![allow(unused_attributes)]
-
 extern crate solana_sdk_bpf_utils;
 
 pub struct Data<'a> {

programs/bpf/rust/tick_height/Cargo.toml

@@ -14,7 +14,6 @@ edition = "2018"
 [dependencies]
 byteorder = { version = "1", default-features = false }
 solana-sdk-bpf-utils = { path = "../../../../sdk/bpf/rust/rust-utils", version = "0.19.0-pre0" }
-solana-sdk-bpf-no-std = { path = "../../../../sdk/bpf/rust/rust-no-std", version = "0.19.0-pre0" }
 
 [workspace]
 members = []

programs/bpf/rust/tick_height/Xargo.toml

@@ -1,6 +1,2 @@
-[dependencies.compiler_builtins]
-path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/compiler-builtins"
-features = ["c", "mem"]
-
-[target.bpfel-unknown-unknown.dependencies]
-alloc = { path = "../../../../sdk/bpf/dependencies/rust-bpf-sysroot/src/liballoc" }
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/bpf/rust/tick_height/src/lib.rs

@@ -1,12 +1,6 @@
 //! @brief Example Rust-based BPF program that prints out the parameters passed to it
 
-#![no_std]
-#![allow(unreachable_code)]
-
-#[cfg(not(test))]
-extern crate solana_sdk_bpf_no_std;
 extern crate solana_sdk_bpf_utils;
-
 use byteorder::{ByteOrder, LittleEndian};
 use solana_sdk_bpf_utils::entrypoint::*;
 use solana_sdk_bpf_utils::{entrypoint, info};

sdk/bpf/.gitignore

@@ -1,4 +1,5 @@
 /dependencies/criterion*
+/dependencies/hashbrown*
 /dependencies/llvm-native*
 /dependencies/rust-bpf*
 /dependencies/xargo*

sdk/bpf/rust/rust-no-std/.gitignore

@@ -1,4 +0,0 @@
-/target/
-
-Cargo.lock
-/farf/

sdk/bpf/rust/rust-no-std/Cargo.toml

@@ -1,16 +0,0 @@
-
-[package]
-name = "solana-sdk-bpf-no-std"
-version = "0.19.0-pre0"
-description = "Solana BPF SDK Rust no_std support"
-authors = ["Solana Maintainers <maintainers@solana.com>"]
-repository = "https://github.com/solana-labs/solana"
-license = "Apache-2.0"
-homepage = "https://solana.com/"
-edition = "2018"
-
-[dependencies]
-solana-sdk-bpf-utils = { path = "../rust-utils" }
-
-[workspace]
-members = []

sdk/bpf/rust/rust-no-std/src/allocator.rs

@@ -1,23 +0,0 @@
-//! @brief Solana Rust-based BPF program memory allocator shim
-
-use core::alloc::{GlobalAlloc, Layout};
-use solana_sdk_bpf_utils::log::*;
-
-pub struct Allocator;
-unsafe impl GlobalAlloc for Allocator {
-    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
-        sol_alloc_free_(layout.size() as u64, 0)
-    }
-    unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
-        sol_alloc_free_(layout.size() as u64, ptr as u64);
-    }
-}
-extern "C" {
-    fn sol_alloc_free_(size: u64, ptr: u64) -> *mut u8;
-}
-
-#[alloc_error_handler]
-fn my_alloc_error_handler(_: core::alloc::Layout) -> ! {
-    sol_log("alloc_error_handler");
-    panic!();
-}

sdk/bpf/rust/rust-no-std/src/lib.rs

@@ -1,20 +0,0 @@
-//! @brief Solana Rust-based BPF program utility functions and types
-
-#![no_std]
-#![feature(allocator_api)]
-#![feature(alloc_error_handler)]
-#![feature(panic_info_message)]
-#![feature(compiler_builtins_lib)]
-#![feature(lang_items)]
-#![cfg(not(test))]
-
-#[lang = "eh_personality"]
-extern "C" fn eh_personality() {}
-
-extern crate compiler_builtins;
-
-pub mod allocator;
-pub mod panic;
-
-#[global_allocator]
-static A: allocator::Allocator = allocator::Allocator;

sdk/bpf/rust/rust-no-std/src/panic.rs

@@ -1,32 +0,0 @@
-//! @brief Solana Rust-based BPF program panic handling
-
-use core::panic::PanicInfo;
-use core::ptr;
-
-#[panic_handler]
-fn panic(info: &PanicInfo) -> ! {
-    // Message is ignored for now to avoid incurring formatting overhead
-    match info.location() {
-        Some(location) => {
-            let mut file: [u8; 128] = [0; 128];
-            for (i, c) in location.file().as_bytes().iter().enumerate() {
-                if i > 127 {
-                    break;
-                }
-                file[i] = *c;
-            }
-            unsafe {
-                sol_panic_(
-                    file.as_ptr(),
-                    file.len() as u64,
-                    u64::from(location.line()),
-                    u64::from(location.column()),
-                );
-            }
-        }
-        None => unsafe { sol_panic_(ptr::null(), 0, 0, 0) },
-    }
-}
-extern "C" {
-    pub fn sol_panic_(file: *const u8, len: u64, line: u64, column: u64) -> !;
-}

sdk/bpf/rust/rust-utils/src/lib.rs

@@ -1,6 +1,4 @@
 //! @brief Solana Rust-based BPF program utility functions and types
 
-#![no_std]
-
 pub mod entrypoint;
 pub mod log;

sdk/bpf/scripts/install.sh

@@ -116,7 +116,7 @@ if [[ ! -f rust-bpf-$machine-$version.md ]]; then
 fi
 
 # Install Rust-BPF Sysroot sources
-version=v0.8
+version=v0.9
 if [[ ! -f rust-bpf-sysroot-$version.md ]]; then
   (
     set -ex
@@ -134,4 +134,23 @@ if [[ ! -f rust-bpf-sysroot-$version.md ]]; then
   fi
 fi
 
+# Install custom Hashbrown crate needed by Rust-BPF Sysroot
+version=v0.1
+if [[ ! -f hashbrown-$version.md ]]; then
+  (
+    set -ex
+    rm -rf hashbrown*
+    rm -rf xargo
+    cmd="git clone --recursive --single-branch --branch $version https://github.com/solana-labs/hashbrown.git"
+    $cmd
+
+    echo "$cmd" > hashbrown-$version.md
+  )
+  exitcode=$?
+  if [[ $exitcode -ne 0 ]]; then
+    rm -rf hashbrown
+    exit 1
+  fi
+fi
+
 exit 0