From 7ddacbfe1eaccaaa94637562909639ad7d8ee468 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A0rius=20Mont=C3=B3n?= <marius.monton@gmail.com>
Date: Thu, 11 Jun 2020 09:24:48 +0200
Subject: [PATCH] C++ example

---
 tests/CPP/cout/Makefile             | 50 ++++++++++++++++++++++++++++
 tests/CPP/cout/cout.cpp             | 21 ++++++++++++
 tests/CPP/cout/helper_functions.cpp | 51 +++++++++++++++++++++++++++++
 3 files changed, 122 insertions(+)
 create mode 100644 tests/CPP/cout/Makefile
 create mode 100644 tests/CPP/cout/cout.cpp
 create mode 100644 tests/CPP/cout/helper_functions.cpp

diff --git a/tests/CPP/cout/Makefile b/tests/CPP/cout/Makefile
new file mode 100644
index 0000000..25420a3
--- /dev/null
+++ b/tests/CPP/cout/Makefile
@@ -0,0 +1,50 @@
+TARGET   = cout
+
+TARGET_ARCH = riscv32
+
+CC       = riscv32-unknown-elf-g++
+
+# compiling flags here
+CFLAGS = -Wall -I. -O0 -static -march=rv32imac -mabi=ilp32 --specs=nosys.specs
+
+LINKER   = riscv32-unknown-elf-g++
+# linking flags here
+LDFLAGS   = -I. -static 
+LIBS   = $(EXTRA_LIBS)
+
+
+# change these to proper directories where each file should be
+SRCDIR   = ./
+OBJDIR   = .
+BINDIR   = ./
+INCDIR = -I.
+LIBDIR = -L.
+
+
+SOURCES  := $(wildcard $(SRCDIR)/*.cpp)
+INCLUDES := $(wildcard $(INCDIR)/*.h)
+OBJECTS  := $(SOURCES:$(SRCDIR)/%.c=$(OBJDIR)/%.o)
+
+rm       = rm -f
+
+
+$(BINDIR)/$(TARGET): $(OBJECTS)
+	$(LINKER) $(CFLAGS) $(LDFLAGS) $(LIBS) $(LIBDIR) $(OBJECTS) -o $@
+	riscv32-unknown-elf-objdump -d $@ > dump
+	riscv32-unknown-elf-objcopy -Oihex $@ $(TARGET).hex
+	@echo "Linking complete!"
+
+$(OBJECTS): $(OBJDIR)/%.o : $(SRCDIR)/%.cpp
+	@echo "Compiling "$<" ..."
+	$(CC) $(CFLAGS) $(INCDIR) -c $< -o $@
+	@echo "Done!"
+
+.PHONY: clean
+clean:
+	@$(rm) $(OBJECTS) *.hex dump
+	@echo "Cleanup complete!"
+
+.PHONY: remove
+remove: clean
+	@$(rm) $(BINDIR)/$(TARGET)
+	@echo "Executable removed!"
diff --git a/tests/CPP/cout/cout.cpp b/tests/CPP/cout/cout.cpp
new file mode 100644
index 0000000..1752b5f
--- /dev/null
+++ b/tests/CPP/cout/cout.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+using namespace std;
+
+
+int main(void) {
+
+  int aux[5] = {0, 1, 2, 3, 4};
+  int aux2[5];
+  int counter = 0;
+  
+  cout << "Test Start" << endl;
+   
+
+  for ( const auto &x : aux ) std::cout << x << ' ';
+    std::cout << std::endl;
+
+  cout << "Test End" << endl;
+  asm volatile ("ecall");
+
+  return 0;
+}
diff --git a/tests/CPP/cout/helper_functions.cpp b/tests/CPP/cout/helper_functions.cpp
new file mode 100644
index 0000000..a137bfc
--- /dev/null
+++ b/tests/CPP/cout/helper_functions.cpp
@@ -0,0 +1,51 @@
+#include <string.h>
+#include <stdio.h>
+
+
+#define TRACE (*(unsigned char *)0x40000000)
+extern "C" {
+    
+int _read(int file, char* ptr, int len) {
+    return 0;
+}
+
+int _open(int fd) {
+    return 0;
+}
+
+int _close(int fd){
+    return 0;
+}
+
+int _fstat_r(int fd) {
+    return 0;
+}
+
+int _lseek_r(struct _reent *ptr, FILE *fp, long offset, int whence){
+    return 0;
+}
+
+int _isatty_r(struct _reent *ptr, int fd) {
+    return 0;
+}
+
+
+int _write(int file, const char *ptr, int len) {
+  int x;
+
+  for (x = 0; x < len; x++) {
+    TRACE =  *ptr++;
+  }
+
+  return (len);
+}
+
+int _getpid(void) {
+  return 0;
+}
+
+void _kill(int pid) { 
+    return;
+}
+
+}