[ci] run-make/thumb-none-qemu: add example crate.

Author: sekineh

src/test/run-make/thumb-none-qemu/Makefile

@@ -8,11 +8,21 @@ ifneq (,$(filter $(TARGET),thumbv6m-none-eabi thumbv7m-none-eabi))
 
 # For cargo setting
 export RUSTC := $(RUSTC_ORIGINAL)
-LD_LIBRARY_PATH := $(HOST_RPATH_DIR)
+export LD_LIBRARY_PATH := $(HOST_RPATH_DIR)
 # We need to be outside of 'src' dir in order to run cargo
 export WORK_DIR := $(TMPDIR)
 export HERE := $(shell pwd)
 
+## clean up unused env variables which might cause harm.
+# unexport RUSTC_LINKER
+# unexport RUSTC_BOOTSTRAP
+# unexport RUST_BUILD_STAGE
+# unexport RUST_TEST_THREADS
+# unexport RUST_TEST_TMPDIR
+# unexport AR
+# unexport CC
+# unexport CXX
+
 all:
 	bash script.sh
 else

src/test/run-make/thumb-none-qemu/example/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "example"
+version = "0.1.0"
+authors = ["Hideki Sekine <sekineh@me.com>"]
+# edition = "2018"
+
+[dependencies]
+cortex-m = "0.5.4"
+cortex-m-rt = "=0.5.4"
+panic-halt = "0.2.0"
+cortex-m-semihosting = "0.3.1"

src/test/run-make/thumb-none-qemu/example/memory.x

@@ -0,0 +1,23 @@
+/* Device specific memory layout */
+
+/* This file is used to build the cortex-m-rt examples,
+   but not other applications using cortex-m-rt. */
+
+MEMORY
+{
+  /* FLASH and RAM are mandatory memory regions */
+  /* Update examples/data_overflow.rs if you change these sizes. */
+  FLASH : ORIGIN = 0x00000000, LENGTH = 256K
+  RAM : ORIGIN = 0x20000000, LENGTH = 64K
+
+  /* More memory regions can declared: for example this is a second RAM region */
+  /* CCRAM : ORIGIN = 0x10000000, LENGTH = 8K */
+}
+
+/* The location of the stack can be overridden using the `_stack_start` symbol.
+   By default it will be placed at the end of the RAM region */
+/* _stack_start = ORIGIN(CCRAM) + LENGTH(CCRAM); */
+
+/* The location of the .text section can be overridden using the `_stext` symbol.
+   By default it will place after .vector_table */
+/* _stext = ORIGIN(FLASH) + 0x40c; */

src/test/run-make/thumb-none-qemu/example/src/main.rs

@@ -0,0 +1,30 @@
+// #![feature(stdsimd)]
+#![no_main]
+#![no_std]
+
+extern crate cortex_m;
+
+extern crate cortex_m_rt as rt;
+extern crate cortex_m_semihosting as semihosting;
+extern crate panic_halt;
+
+use core::fmt::Write;
+use cortex_m::asm;
+use rt::entry;
+
+entry!(main);
+
+fn main() -> ! {
+    let x = 42;
+
+    loop {
+        asm::nop();
+
+        // write something through semihosting interface
+        let mut hstdout = semihosting::hio::hstdout().unwrap();
+        write!(hstdout, "x = {}\n", x);
+
+        // exit from qemu
+        semihosting::debug::exit(semihosting::debug::EXIT_SUCCESS);
+    }
+}

src/test/run-make/thumb-none-qemu/script.sh

@@ -1,16 +1,13 @@
 set -exuo pipefail
 
-CRATE=cortex-m-rt
-CRATE_URL=https://github.com/rust-embedded/cortex-m-rt
-CRATE_SHA1=62972c8a89ff54b76f9ef0d600c1fcf7a233aabd
+CRATE=example
 
 env | sort
 mkdir -p $WORK_DIR
 pushd $WORK_DIR
     rm -rf $CRATE || echo OK
-    bash -x $HERE/../git_clone_sha1.sh $CRATE $CRATE_URL $CRATE_SHA1
+    cp -a $HERE/example .
     pushd $CRATE
-        $CARGO run --target $TARGET --example qemu           | grep "x = 42"
-        $CARGO run --target $TARGET --example qemu --release | grep "x = 42"
+        $CARGO run --target $TARGET
     popd
-popd
+popd