Rtt riscv rust support

machines/qemu-virt-riscv64/.config

@@ -292,7 +292,7 @@ CONFIG_RT_USING_SERIAL_V1=y
 # CONFIG_RT_USING_SERIAL_V2 is not set
 CONFIG_RT_SERIAL_USING_DMA=y
 CONFIG_RT_SERIAL_RB_BUFSZ=64
-# CONFIG_RT_USING_SERIAL_BYPASS is not set
+CONFIG_RT_USING_SERIAL_BYPASS=y
 # CONFIG_RT_USING_CAN is not set
 CONFIG_RT_USING_CPUTIME=y
 CONFIG_RT_USING_CPUTIME_RISCV=y
@@ -376,7 +376,8 @@ CONFIG_RT_USING_POSIX_DELAY=y
 CONFIG_RT_USING_POSIX_CLOCK=y
 CONFIG_RT_USING_POSIX_TIMER=y
 # CONFIG_RT_USING_PTHREADS is not set
-# CONFIG_RT_USING_MODULE is not set
+CONFIG_RT_USING_MODULE=y
+# CONFIG_RT_USING_CUSTOM_DLMODULE is not set
 
 #
 # Interprocess Communication (IPC)
@@ -1597,14 +1598,13 @@ CONFIG_RT_USING_RUST=y
 # CONFIG_RUST_DEBUG_BUILD is not set
 CONFIG_RUST_EXAMPLE_HELLO=y
 CONFIG_RUST_EXAMPLE_MEMORY=y
-CONFIG_RUST_EXAMPLE_STRING=y
 CONFIG_RUST_EXAMPLE_PRINTF=y
 CONFIG_RUST_EXAMPLE_THREAD=y
 CONFIG_RUST_EXAMPLE_MUTEX=y
 CONFIG_RUST_EXAMPLE_SEM=y
 CONFIG_RUST_EXAMPLE_MQ=y
-CONFIG_RUST_EXAMPLE_VEC=y
 CONFIG_RUST_EXAMPLE_DL=y
+# CONFIG_RUST_BENCH_TEST is not set
 CONFIG_RUST_INIT_COMPONENT=y
 CONFIG_BOARD_QEMU_VIRT_RV64=y
 CONFIG_ENABLE_FPU=y

machines/qemu-virt-riscv64/applications/c_bench.c

@@ -0,0 +1,19 @@
+// #include <stdio.h>
+// #include <unistd.h>
+// #include <sys/time.h>
+// #include <rtthread.h>
+// #include <rtdbg.h>
+
+// int c_bench(void) {
+//     struct timeval tv_begin, tv_end;
+//     gettimeofday(&tv_begin,NULL);
+//     for (int i = 0; i < 1; i++) {
+// 	    rt_kprintf("C program: Hello world! %d\n", i);
+//     }
+//     gettimeofday(&tv_end,NULL);
+//     double milisecs = (tv_end.tv_sec - tv_begin.tv_sec) * 1000.0 + (tv_end.tv_usec - tv_begin.tv_usec) / 1000.0;
+//     rt_kprintf("Time: %fms\n", milisecs);
+//     return 0;
+// }
+
+// INIT_ENV_EXPORT(c_bench);

machines/qemu-virt-riscv64/link.lds

@@ -69,6 +69,12 @@ SECTIONS
         KEEP(*(UtestTcTab))
         __rt_utest_tc_tab_end = .;
 
+        /* section information for modules */
+        . = ALIGN(8); /* for 64-bit system use 8-byte alignment */
+        __rtmsymtab_start = .;
+        KEEP(*(RTMSymTab))
+        __rtmsymtab_end = .;
+
         . = ALIGN(8);
         _etext = .;
     } > SRAM

machines/qemu-virt-riscv64/mylib/.cargo/config.toml

@@ -0,0 +1,15 @@
+[build]
+target = "riscv64gc-unknown-linux-gnu"
+
+[unstable]
+build-std = ["core", "alloc", "panic_abort"]
+
+[target.riscv64gc-unknown-linux-gnu]
+linker = "ld.lld"
+rustflags = [
+    "-C", "link-arg=-m", "-C", "link-arg=elf64lriscv",
+    "-C", "link-arg=-L/usr/riscv64-linux-gnu/lib",
+    "-C", "link-arg=-L/usr/lib/riscv64-linux-gnu",
+    "-C", "link-arg=-L/usr/lib/gcc-cross/riscv64-linux-gnu/9",
+    "-C", "panic=abort"
+]

machines/qemu-virt-riscv64/mylib/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "mylib"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+rt-rust = { path = "../rust" }

machines/qemu-virt-riscv64/mylib/src/lib.rs

@@ -0,0 +1,21 @@
+#![no_std]
+// Bring rt-rust's println! macro into scope
+use rt_rust::println;
+use core::ffi::{c_char, CStr};
+#[unsafe(no_mangle)]
+pub extern "C" fn rust_mylib_println(s: *const c_char) {
+    if s.is_null() {
+        println!("");
+    } else {
+            let cs = unsafe {CStr::from_ptr(s)};
+            match cs.to_str() {
+                Ok(msg) => println!("{}", msg),
+                Err(_) => println!("[invalid UTF-8]"),
+            }
+    }
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn rust_mylib_add(a: usize, b: usize) -> usize {
+    a + b
+}

machines/qemu-virt-riscv64/mylib/target/.rustc_info.json

@@ -0,0 +1 @@
+{"rustc_fingerprint":4312154744837725510,"outputs":{"17747080675513052775":{"success":true,"status":"","code":0,"stdout":"rustc 1.90.0-nightly (4b55fe199 2025-08-01)\nbinary: rustc\ncommit-hash: 4b55fe199cfe9c710555a5af7f2a49491ad38254\ncommit-date: 2025-08-01\nhost: x86_64-unknown-linux-gnu\nrelease: 1.90.0-nightly\nLLVM version: 20.1.8\n","stderr":""},"7971740275564407648":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/home/fox/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu\noff\npacked\nunpacked\n___\ndebug_assertions\nfmt_debug=\"full\"\noverflow_checks\npanic=\"unwind\"\nproc_macro\nrelocation_model=\"pic\"\ntarget_abi=\"\"\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"x87\"\ntarget_has_atomic\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_has_atomic_equal_alignment=\"16\"\ntarget_has_atomic_equal_alignment=\"32\"\ntarget_has_atomic_equal_alignment=\"64\"\ntarget_has_atomic_equal_alignment=\"8\"\ntarget_has_atomic_equal_alignment=\"ptr\"\ntarget_has_atomic_load_store\ntarget_has_atomic_load_store=\"16\"\ntarget_has_atomic_load_store=\"32\"\ntarget_has_atomic_load_store=\"64\"\ntarget_has_atomic_load_store=\"8\"\ntarget_has_atomic_load_store=\"ptr\"\ntarget_has_reliable_f128\ntarget_has_reliable_f16\ntarget_has_reliable_f16_math\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_thread_local\ntarget_vendor=\"unknown\"\nub_checks\nunix\n","stderr":""},"1001216461566314707":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/home/fox/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu\noff\n___\ndebug_assertions\nfmt_debug=\"full\"\noverflow_checks\npanic=\"abort\"\nproc_macro\nrelocation_model=\"pic\"\ntarget_abi=\"\"\ntarget_arch=\"riscv64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"a\"\ntarget_feature=\"c\"\ntarget_feature=\"d\"\ntarget_feature=\"f\"\ntarget_feature=\"m\"\ntarget_feature=\"zaamo\"\ntarget_feature=\"zalrsc\"\ntarget_feature=\"zicsr\"\ntarget_feature=\"zifencei\"\ntarget_has_atomic\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_has_atomic_equal_alignment=\"16\"\ntarget_has_atomic_equal_alignment=\"32\"\ntarget_has_atomic_equal_alignment=\"64\"\ntarget_has_atomic_equal_alignment=\"8\"\ntarget_has_atomic_equal_alignment=\"ptr\"\ntarget_has_atomic_load_store\ntarget_has_atomic_load_store=\"16\"\ntarget_has_atomic_load_store=\"32\"\ntarget_has_atomic_load_store=\"64\"\ntarget_has_atomic_load_store=\"8\"\ntarget_has_atomic_load_store=\"ptr\"\ntarget_has_reliable_f128\ntarget_has_reliable_f128_math\ntarget_has_reliable_f16\ntarget_has_reliable_f16_math\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_thread_local\ntarget_vendor=\"unknown\"\nub_checks\nunix\n","stderr":""}},"successes":{}}

machines/qemu-virt-riscv64/mylib/target/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

machines/qemu-virt-riscv64/mylib/target/debug/.fingerprint/compiler_builtins-f75e27500c4d3ab7/build-script-build-script-build

@@ -0,0 +1 @@
+a7bf755ff0156e65

machines/qemu-virt-riscv64/mylib/target/debug/.fingerprint/compiler_builtins-f75e27500c4d3ab7/build-script-build-script-build.json

@@ -0,0 +1 @@
+{"rustc":7628920048581603178,"features":"[\"compiler-builtins\", \"default\", \"rustc-dep-of-std\"]","declared_features":"[\"c\", \"compiler-builtins\", \"default\", \"mangled-names\", \"mem\", \"no-asm\", \"no-f16-f128\", \"rustc-dep-of-std\", \"unstable-public-internals\"]","target":2835126046236718539,"profile":15657897354478470176,"path":13989293095081808934,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/compiler_builtins-f75e27500c4d3ab7/dep-build-script-build-script-build","checksum":false}}],"rustflags":[],"config":2069994364910194474,"compile_kind":0}

machines/qemu-virt-riscv64/mylib/target/debug/.fingerprint/compiler_builtins-f75e27500c4d3ab7/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

machines/qemu-virt-riscv64/mylib/target/release/.fingerprint/compiler_builtins-22f0dda3a1e420de/build-script-build-script-build

@@ -0,0 +1 @@
+c9a60cacad0e49a8

machines/qemu-virt-riscv64/mylib/target/release/.fingerprint/compiler_builtins-22f0dda3a1e420de/build-script-build-script-build.json

@@ -0,0 +1 @@
+{"rustc":7628920048581603178,"features":"[\"compiler-builtins\", \"default\", \"rustc-dep-of-std\"]","declared_features":"[\"c\", \"compiler-builtins\", \"default\", \"mangled-names\", \"mem\", \"no-asm\", \"no-f16-f128\", \"rustc-dep-of-std\", \"unstable-public-internals\"]","target":2835126046236718539,"profile":1369601567987815722,"path":13989293095081808934,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"release/.fingerprint/compiler_builtins-22f0dda3a1e420de/dep-build-script-build-script-build","checksum":false}}],"rustflags":[],"config":2069994364910194474,"compile_kind":0}

machines/qemu-virt-riscv64/mylib/target/release/.fingerprint/compiler_builtins-22f0dda3a1e420de/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

machines/qemu-virt-riscv64/mylib/target/release/.fingerprint/mylib-a47725550c9855e2/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

machines/qemu-virt-riscv64/mylib/target/release/.fingerprint/mylib-a47725550c9855e2/output-lib-mylib

@@ -0,0 +1,4 @@
+{"$message_type":"diagnostic","message":"cannot find macro `println` in this scope","code":null,"level":"error","spans":[{"file_name":"src/lib.rs","byte_start":307,"byte_end":314,"line_start":20,"line_end":20,"column_start":5,"column_end":12,"is_primary":true,"text":[{"text":"    println!(\"Hello\");","highlight_start":5,"highlight_end":12}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`println` is in scope, but it is a function, not a macro","code":null,"level":"note","spans":[],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[38;5;9merror\u001b[0m\u001b[0m\u001b[1m: cannot find macro `println` in this scope\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/lib.rs:20:5\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m20\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    println!(\"Hello\");\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m     \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;9m^^^^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `println` is in scope, but it is a function, not a macro\u001b[0m\n\n"}
+{"$message_type":"diagnostic","message":"cannot find macro `println` in this scope","code":null,"level":"error","spans":[{"file_name":"src/lib.rs","byte_start":161,"byte_end":168,"line_start":12,"line_end":12,"column_start":5,"column_end":12,"is_primary":true,"text":[{"text":"    println!(\"{}\", str);","highlight_start":5,"highlight_end":12}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`println` is in scope, but it is a function, not a macro","code":null,"level":"note","spans":[],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[38;5;9merror\u001b[0m\u001b[0m\u001b[1m: cannot find macro `println` in this scope\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/lib.rs:12:5\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m12\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    println!(\"{}\", str);\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m     \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;9m^^^^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `println` is in scope, but it is a function, not a macro\u001b[0m\n\n"}
+{"$message_type":"diagnostic","message":"unwinding panics are not supported without std","code":null,"level":"error","spans":[],"children":[{"message":"using nightly cargo, use -Zbuild-std with panic=\"abort\" to avoid unwinding","code":null,"level":"help","spans":[],"children":[],"rendered":null},{"message":"since the core library is usually precompiled with panic=\"unwind\", rebuilding your crate with panic=\"abort\" may not be enough to fix the problem","code":null,"level":"note","spans":[],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[38;5;9merror\u001b[0m\u001b[0m\u001b[1m: unwinding panics are not supported without std\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mhelp\u001b[0m\u001b[0m: using nightly cargo, use -Zbuild-std with panic=\"abort\" to avoid unwinding\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: since the core library is usually precompiled with panic=\"unwind\", rebuilding your crate with panic=\"abort\" may not be enough to fix the problem\u001b[0m\n\n"}
+{"$message_type":"diagnostic","message":"aborting due to 3 previous errors","code":null,"level":"error","spans":[],"children":[],"rendered":"\u001b[0m\u001b[1m\u001b[38;5;9merror\u001b[0m\u001b[0m\u001b[1m: aborting due to 3 previous errors\u001b[0m\n\n"}

machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/alloc-985c17cdc0ba9b87/invoked.timestamp

@@ -0,0 +1 @@
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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/alloc-985c17cdc0ba9b87/lib-alloc

@@ -0,0 +1 @@
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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/alloc-985c17cdc0ba9b87/lib-alloc.json

@@ -0,0 +1 @@
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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/compiler_builtins-27fc30a1e90ac345/run-build-script-build-script-build

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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/compiler_builtins-27fc30a1e90ac345/run-build-script-build-script-build.json

@@ -0,0 +1 @@
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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/compiler_builtins-bbf205eee99dac91/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/compiler_builtins-bbf205eee99dac91/lib-compiler_builtins

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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/compiler_builtins-bbf205eee99dac91/lib-compiler_builtins.json

@@ -0,0 +1 @@
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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/core-168e72ef489079f9/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/core-168e72ef489079f9/lib-core

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machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/core-168e72ef489079f9/lib-core.json

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+{"rustc":7628920048581603178,"features":"[]","declared_features":"[\"debug_refcell\", \"optimize_for_size\", \"panic_immediate_abort\"]","target":10807187676209248784,"profile":8132042427338545879,"path":16434527020528193797,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"riscv64gc-unknown-linux-gnu/debug/.fingerprint/core-168e72ef489079f9/dep-lib-core","checksum":false}}],"rustflags":["-C","link-arg=-m","-C","link-arg=elf64lriscv","-C","link-arg=-L/usr/riscv64-linux-gnu/lib","-C","link-arg=-L/usr/lib/riscv64-linux-gnu","-C","link-arg=-L/usr/lib/gcc-cross/riscv64-linux-gnu/9","-C","panic=abort"],"config":3665096432609907033,"compile_kind":13748030006194427100}

machines/qemu-virt-riscv64/mylib/target/riscv64gc-unknown-linux-gnu/debug/.fingerprint/mylib-12243d7fac99262f/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.