Adds CharacterDevice base class for SerialPort.

prototypes-rework/config.mk

@@ -7,4 +7,6 @@ CC=/opt/bin/i686-elf-gcc
 CXX=/opt/bin/i686-elf-g++
 LD=/opt/i686-elf/bin/ld
 AR=/opt/i686-elf/bin/ar
-AS=/opt/bin/i686-elf-gcc
+AS=/opt/bin/i686-elf-gcc
+
+LIBS += -L/opt/lib/gcc/i686-elf/6.1.0/

prototypes-rework/include/chardev.hpp

@@ -0,0 +1,94 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+template<typename T>
+struct NumericFormat
+{
+  T value;
+  uint32_t base;
+	
+	/**
+	 * Applies a padding to the number.
+	 * A positive number will apply padding the right side,
+	 * a negative number will pad the left side.
+	 */
+	int32_t padding = 0;
+	
+	char padchar = ' ';
+
+  NumericFormat(T value) : value(value), base(10) { }
+  NumericFormat(T value, uint32_t base) : value(value), base(base) { }
+};
+
+namespace utils
+{
+  template<typename T>
+  auto hex(T value) { return NumericFormat<T>(value, 16); }
+  
+  template<typename T>
+  auto dec(T value) { return NumericFormat<T>(value, 10); }
+  
+  template<typename T>
+  auto oct(T value) { return NumericFormat<T>(value, 8); }
+  
+  template<typename T>
+  auto bin(T value) { return NumericFormat<T>(value, 2); }
+  
+  template<typename T>
+  auto nbase(T value, uint32_t base) { return NumericFormat<T>(value, base); }
+	
+	template<typename T>
+	auto pad(NumericFormat<T> value, int32_t padding, char c = ' ') { 
+		value.padding = padding;
+		return value;
+	}
+	
+	template<typename T>
+	auto pad(T value, int32_t padding, char c = ' ') { 
+		return pad(NumericFormat<T>(value), padding, c);
+	}
+}
+
+class CharacterDevice
+{
+private:
+	/**
+	 * Prints the prefix for a given numeric base.
+	 * @returns the prefix length.
+	 */
+	uint32_t printNumericPrefix(uint32_t base);
+	
+	/**
+	 * Prints a character several times.
+	 */
+	void putrep(char c, uint32_t repetitions);
+public:
+	virtual void write(char c) = 0;
+  
+  inline CharacterDevice & operator << (char c)
+  {
+    this->write(c);
+    return *this;
+  }
+
+  inline CharacterDevice & operator << (const char *str)
+  {
+    while(*str) {
+      *this << *str++;
+    }
+    return *this;
+  }
+  
+  CharacterDevice & operator << (uint32_t value);
+  
+  CharacterDevice & operator << (int32_t value);
+  
+  CharacterDevice & operator << (void *value);
+  
+  CharacterDevice & operator << (bool value);
+  
+  template<typename T>
+  CharacterDevice & operator << (const NumericFormat<T> &fmt);
+};

prototypes-rework/include/driver/serial.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <stdint.h>
+#include <chardev.hpp>
 
 #define SERIAL_COM1 0x3F8
 #define SERIAL_COM2 0x2F8
@@ -16,7 +17,8 @@ enum class Partiy
 	Low  = 0x7,
 };
 
-class SerialPort
+class SerialPort : 
+	public CharacterDevice
 {
 private:
 	uint16_t mBase;
@@ -31,7 +33,7 @@ public:
 	
 	bool isReceiveEmpty() const;
 	
-	void write(uint8_t c);
+	void write(char c) override;
 	
-	uint8_t read();
+	char read();
 };

prototypes-rework/libbase/numeric.cpp

@@ -0,0 +1,133 @@
+#include <numeric.hpp>
+
+static char getDigit(uint32_t i)
+{
+  if(i >= 0 && i <= 9) {
+    return '0' + i;
+  }
+  return 'A' + (i-10);
+}
+
+size_t Numeric::toString(
+  char *buffer, 
+  size_t length, 
+  uint32_t number, 
+  uint32_t radix)
+{
+  if(length == 0) {
+    return 0;
+  }
+  if(number == 0) {
+    buffer[0] = '0';
+    return 1;
+  }
+
+  size_t len = 0;
+  while(number > 0)
+  {
+    buffer[len++] = getDigit(number % radix);
+    if(len >= length)
+      break;
+    number /= radix;
+  }
+  
+  int half = len / 2;
+  for(int i = 0; i < half; i++)
+  {
+    char c = buffer[i];
+    buffer[i] = buffer[len - i - 1];
+    buffer[len - i - 1] = c;
+  }
+  
+  return len;
+}
+
+size_t Numeric::toString(
+  char *buffer, 
+  size_t length, 
+  int32_t number, 
+  uint32_t radix)
+{
+  if(length == 0) {
+    return 0;
+  }
+  if(number == 0) {
+    buffer[0] = '0';
+    return 1;
+  }
+  if(number < 0) {
+    buffer[0] = '-';
+    length -= 1;
+    if(length == 0) {
+      return 0;
+    }
+    return Numeric::toString(&buffer[1], length, static_cast<uint32_t>(-number), radix) + 1;
+  }
+  else {
+    return Numeric::toString(buffer, length, static_cast<uint32_t>(number), radix);
+  }
+}
+
+
+
+
+
+size_t Numeric::toString(
+  char *buffer, 
+  size_t length, 
+  uint64_t number, 
+  uint32_t radix)
+{
+  if(length == 0) {
+    return 0;
+  }
+  if(number == 0) {
+    buffer[0] = '0';
+    return 1;
+  }
+
+  size_t len = 0;
+  while(number > 0)
+  {
+    buffer[len++] = getDigit(number % radix);
+    if(len >= length)
+      break;
+    number /= radix;
+  }
+  
+  int half = len / 2;
+  for(int i = 0; i < half; i++)
+  {
+    char c = buffer[i];
+    buffer[i] = buffer[len - i - 1];
+    buffer[len - i - 1] = c;
+  }
+  
+  return len;
+}
+
+size_t Numeric::toString(
+  char *buffer, 
+  size_t length, 
+  int64_t number, 
+  uint32_t radix)
+{
+  if(length == 0) {
+    return 0;
+  }
+  if(number == 0) {
+    buffer[0] = '0';
+    return 1;
+  }
+  if(number < 0) {
+    buffer[0] = '-';
+    length -= 1;
+    if(length == 0) {
+      return 0;
+    }
+    return Numeric::toString(&buffer[1], length, static_cast<uint64_t>(-number), radix) + 1;
+  }
+  else {
+    return Numeric::toString(buffer, length, static_cast<uint64_t>(number), radix);
+  }
+}

prototypes-rework/libchardev/Makefile

@@ -0,0 +1,12 @@
+##
+# Build libchardev.
+##
+
+include ../config.mk
+
+LIBRARY = libchardev.a
+
+all: builddir $(LIBRARY)
+
+include ../common.mk
+include ../library.mk

prototypes-rework/libchardev/chardev.cpp

@@ -0,0 +1,105 @@
+#include <chardev.hpp>
+
+#include <numeric.hpp>
+
+
+CharacterDevice & CharacterDevice::operator << (uint32_t value)
+{
+  char buffer[12];
+  size_t len = Numeric::toString(buffer, sizeof(buffer), value, 10);
+  for(size_t i = 0; i < len; i++) {
+    this->write(buffer[i]);
+  }
+  return *this;
+}
+
+CharacterDevice & CharacterDevice::operator << (int32_t value)
+{
+  char buffer[13];
+  size_t len = Numeric::toString(buffer, sizeof(buffer), value, 10);
+  for(size_t i = 0; i < len; i++) {
+    this->write(buffer[i]);
+  }
+  return *this;
+}
+
+CharacterDevice & CharacterDevice::operator << (void *value)
+{
+  char buffer[13];
+  size_t len = Numeric::toString(buffer, sizeof(buffer), reinterpret_cast<uint32_t>(value), 16);
+  for(size_t i = 0; i < len; i++) {
+    this->write(buffer[i]);
+  }
+  return *this;
+}
+
+CharacterDevice & CharacterDevice::operator << (bool value)
+{
+  if(value == true) {
+    *this << "true";
+  } else {
+    *this << "false";
+  }
+  return *this;
+}
+
+
+#define NUMERIC_FMT_HANDLER char buffer[13]; \
+	size_t prefixlen = this->printNumericPrefix(fmt.base); \
+  size_t len = Numeric::toString(buffer, sizeof(buffer), fmt.value, fmt.base); \
+	int delta = prefixlen + len; \
+	if(fmt.padding < 0 && delta < -fmt.padding) { \
+		this->putrep(fmt.padchar, -fmt.padding - delta); \
+	} \
+  for(size_t i = 0; i < len; i++) { \
+    this->write(buffer[i]); \
+  } \
+	if(fmt.padding > 0 && delta < fmt.padding) { \
+		this->putrep(fmt.padchar, fmt.padding - delta); \
+	} \
+  return *this
+
+template<>
+CharacterDevice & CharacterDevice::operator << <uint32_t>(const NumericFormat<uint32_t> & fmt)
+{
+  NUMERIC_FMT_HANDLER;
+}
+
+template<>
+CharacterDevice & CharacterDevice::operator << <int32_t>(const NumericFormat<int32_t> & fmt)
+{
+  NUMERIC_FMT_HANDLER;
+}
+
+template<>
+CharacterDevice & CharacterDevice::operator << <uint64_t>(const NumericFormat<uint64_t> & fmt)
+{
+  NUMERIC_FMT_HANDLER;
+}
+
+template<>
+CharacterDevice & CharacterDevice::operator << <int64_t>(const NumericFormat<int64_t> & fmt)
+{
+  NUMERIC_FMT_HANDLER;
+}
+
+uint32_t CharacterDevice::printNumericPrefix(uint32_t base)
+{
+	switch(base) {
+		case 2: *this << "0b"; return 2;
+		case 8: *this << "0o"; return 2;
+		case 10: return 0;
+		case 16: *this << "0x"; return 2;
+		default:
+			*this << "[" << base << "]x";
+			if(base < 10) return 4;
+			if(base < 100) return 5;
+			return 6;
+	}
+}
+
+void CharacterDevice::putrep(char c, uint32_t repetitions)
+{
+	for(uint32_t i = 0; i < repetitions; i++)
+		this->write(c);
+}

prototypes-rework/libserial/serial.cpp

@@ -53,13 +53,13 @@ bool SerialPort::isReceiveEmpty() const
 	return (inb(this->mBase + LSR) & 1) == 0;
 }
 
-void SerialPort::write(uint8_t c)
+void SerialPort::write(char c)
 {
 	while (this->isTransmitEmpty() == false);
 	outb(this->mBase, c);
 }
 
-uint8_t SerialPort::read()
+char SerialPort::read()
 {
 	while (this->isReceiveEmpty());
 	return inb(this->mBase);

prototypes-rework/video/Makefile

@@ -5,7 +5,7 @@
 include ../config.mk
 
 KERNEL = video.ker
-LIBS   = -lboot -lvideo -lserial
+LIBS  += -lboot -lvideo -lchardev -lserial -lbase -lgcc
 
 all: builddir $(KERNEL)
 

prototypes-rework/video/src/init.cpp

@@ -8,10 +8,7 @@
 extern "C" void init(multiboot::Structure const & data)
 {
 	SerialPort serial(SERIAL_COM1);
-
-	serial.write('H');
-	serial.write('i');
-	serial.write('\n');
+	serial << "Hi!\n";
 	
 	VideoScreen video(*data.vbe.modeInfo);
 	for(uint32_t y = 0; y < video.height(); y++)
@@ -22,5 +19,7 @@ extern "C" void init(multiboot::Structure const & data)
 		}
 	}
 	
+	serial << "w=" << video.width() << " h=" << video.height() << "\n";
+	
 	while(true);
 }