From 91d7affc233a97da68f886b663f440399c3a0037 Mon Sep 17 00:00:00 2001
From: Eggert Jung <eggert.jung@tu-bs.de>
Date: Wed, 23 Apr 2025 01:31:43 +0200
Subject: [PATCH] kout

---
 arch/serial.cc         | 15 +++++++++------
 device/serialstream.cc |  5 ++++-
 device/serialstream.h  |  3 +++
 device/textstream.cc   |  3 ---
 main.cc                | 39 +++++++++++++++++++++++++++------------
 object/stringbuffer.cc |  6 +++++-
 tools/qemu.mk          |  2 +-
 7 files changed, 49 insertions(+), 24 deletions(-)

diff --git a/arch/serial.cc b/arch/serial.cc
index 2a6b2bc..8b7e5df 100644
--- a/arch/serial.cc
+++ b/arch/serial.cc
@@ -40,10 +40,13 @@ char Serial::readReg(RegisterIndex reg) {
 }
 
 int Serial::write(char out) {
-  // TODO: Implement
-  if(readReg(LINE_STATUS_REGISTER) & TRANSMITTER_EMPTY){
-      writeReg(TRANSMIT_BUFFER_REGISTER, out);
-      return out;
-  }
-  return -1;
+    //TODO fix behavior when \r\n ist actually sent
+    if(out == '\n')
+        write('\r');
+
+    if(readReg(LINE_STATUS_REGISTER) & TRANSMITTER_EMPTY){
+        writeReg(TRANSMIT_BUFFER_REGISTER, out);
+        return out;
+    }
+    return -1;
 }
diff --git a/device/serialstream.cc b/device/serialstream.cc
index bb029f1..6d3f7e9 100644
--- a/device/serialstream.cc
+++ b/device/serialstream.cc
@@ -5,8 +5,11 @@ SerialStream::SerialStream(ComPort port, BaudRate baud_rate, DataBits data_bits,
                            StopBits stop_bits, Parity parity)
     :Serial(port, baud_rate, data_bits, stop_bits, parity) {}
 
+SerialStream kout = SerialStream();
+
 void SerialStream::flush() {
-  print(buffer, strlen(buffer));
+  print(buffer, pos);
+  pos = 0;
 }
 
 // https://stackoverflow.com/questions/3440726/what-is-the-proper-way-of-implementing-a-good-itoa-function
diff --git a/device/serialstream.h b/device/serialstream.h
index 83450ee..5e1122b 100644
--- a/device/serialstream.h
+++ b/device/serialstream.h
@@ -141,3 +141,6 @@ class SerialStream : public OutputStream, public Serial {
    */
   void print(char* str, int length);
 };
+
+extern SerialStream kout;
+
diff --git a/device/textstream.cc b/device/textstream.cc
index b7dd125..0a210d3 100644
--- a/device/textstream.cc
+++ b/device/textstream.cc
@@ -15,7 +15,4 @@ TextStream::TextStream(unsigned from_col,
 void TextStream::flush() {
   print(buffer,pos);
   pos = 0;
-  
-
-
 }
diff --git a/main.cc b/main.cc
index a6c23e7..37e36d6 100644
--- a/main.cc
+++ b/main.cc
@@ -38,18 +38,33 @@ extern "C" int main() {
   //Serial s = Serial();
   //s.write('a');
 
-  // test SerialStream
-  SerialStream ss = SerialStream();
-  ss.print("test", 4);
-  ss.setAttribute(SerialStream::UNDERSCORE);
-  ss.print("test", 4);
-  ss.setAttribute(SerialStream::RESET);
-  ss.setForeground(SerialStream::MAGENTA);
-  ss.print("test", 4);
-  ss.setBackground(SerialStream::CYAN);
-  ss.print("test", 4);
-  ss.setPos(10, 10);
-  ss.print("test", 4);
+  //// test SerialStream
+  //SerialStream ss = SerialStream();
+  //ss.print("test", 4);
+  //ss.setAttribute(SerialStream::UNDERSCORE);
+  //ss.print("test", 4);
+  //ss.setAttribute(SerialStream::RESET);
+  //ss.setForeground(SerialStream::MAGENTA);
+  //ss.print("test", 4);
+  //ss.setBackground(SerialStream::CYAN);
+  //ss.print("test", 4);
+  //ss.setPos(10, 10);
+  //ss.print("test", 4);
+  
+  kout << "Test          <stream result> -> <expected>" << endl;
+  kout << "bool:         " << true << " -> true" << endl;
+  kout << "zero:         " << 0 << " -> 0" << endl;
+  kout << "binary:       " << bin << 42 << dec << " -> 0b101010" << endl;
+  kout << "octal:        " << oct << 42 << dec << " -> 052" << endl;
+  kout << "hex:          " << hex << 42 << dec << " -> 0x2a" << endl;
+  kout << "uint64_t max: " << ~((uint64_t)0) << " -> 18446744073709551615" << endl;
+  kout << "int64_t max:  " << ~(1ll<<63) << " -> 9223372036854775807" << endl;
+  kout << "int64_t min:  " << (1ll<<63) << " -> -9223372036854775808" << endl;
+  kout << "some int64_t: " << (-1234567890123456789) << " -> -1234567890123456789" << endl;
+  kout << "some int64_t: " << (1234567890123456789) << " -> 1234567890123456789" << endl;
+  kout << "pointer:      " << reinterpret_cast<void*>(1994473406541717165ull)
+      << " -> 0x1badcafefee1dead" << endl;
+  kout << "smiley:       " << static_cast<char>(1) << endl;
 
   /* Start application processors
    * To avoid unexpected behaviour, make sure that interrupts are not
diff --git a/object/stringbuffer.cc b/object/stringbuffer.cc
index c0f0903..bbdb312 100644
--- a/object/stringbuffer.cc
+++ b/object/stringbuffer.cc
@@ -1,3 +1,7 @@
 #include "stringbuffer.h"
 
-void Stringbuffer::put(char c) { (void)c; }
+void Stringbuffer::put(char c) {
+    buffer[pos++] = c;
+    if(pos > 80)
+        flush();
+}
diff --git a/tools/qemu.mk b/tools/qemu.mk
index 7526310..af6fbff 100644
--- a/tools/qemu.mk
+++ b/tools/qemu.mk
@@ -59,7 +59,7 @@ kvm: all
 
 # Execute Qemu with activated GDB stub and directly connect GDB to the spawned Qemu.
 gdb: all
-	${VERBOSE}  $(GDB) "$(DBGKERNEL)" \
+	${VERBOSE} cgdb -d $(GDB) "$(DBGKERNEL)" \
 		-ex "set arch $(DBGARCH)" \
 		-ex "target remote | exec $(QEMU) -gdb stdio $(QEMUKERNEL) -smp $(QEMUCPUS) -S $(QEMUFLAGS) $(DBGFLAGS)"