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Add debug uart utility functions.

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This commit is contained in:
Jonas 'Sortie' Termansen 2016-09-06 00:22:00 +02:00
parent 1990c899dd
commit 0342e03073
2 changed files with 24 additions and 2 deletions
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21
kernel/uart.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2011 Jonas 'Sortie' Termansen.
* Copyright (c) 2011, 2016 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -148,6 +148,25 @@ void WriteChar(char c)
outport8(PORT + IER, ier);
}
void WriteString(const char* str)
{
Write(str, strlen(str));
}
static size_t WriteCallback(void*, const char* chars, size_t size)
{
Write(chars, size);
return size;
}
void WriteF(const char* format, ...)
{
va_list list;
va_start(list, format);
vcbprintf(NULL, WriteCallback, format, list);
va_end(list);
}
int TryPopChar()
{
// Save the IER and disable interrupts.

5
kernel/uart.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2011 Jonas 'Sortie' Termansen.
* Copyright (c) 2011, 2016 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -27,6 +27,9 @@ void Init();
void Read(uint8_t* buffer, size_t size);
void Write(const void* buffer, size_t size);
void WriteChar(char c);
void WriteString(const char* str);
__attribute__((format(printf, 1, 2)))
void WriteF(const char* format, ...);
int TryPopChar();
} // namespace UART