log* -> common/log/

git-svn-id: https://www.virtualbox.org/svn/vbox/trunk@5415 cfe28804-0f27-0410-a406-dd0f0b0b656f

1 files changed, 113 insertions, 0 deletions

diff --git a/src/VBox/Runtime/common/log/logcom.cpp b/src/VBox/Runtime/common/log/logcom.cpp
new file mode 100644
index 00000000000..adbcc7d9e6d
--- /dev/null
+++ b/src/VBox/Runtime/common/log/logcom.cpp
@@ -0,0 +1,113 @@
+/* $Id$ */
+/** @file
+ * innotek Portable Runtime - Logging to Serial Port.
+ */
+
+/*
+ * Copyright (C) 2006-2007 innotek GmbH
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License as published by the Free Software Foundation,
+ * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
+ * distribution. VirtualBox OSE is distributed in the hope that it will
+ * be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+/*******************************************************************************
+*   Defined Constants And Macros                                               *
+*******************************************************************************/
+/** Comport to log to (COM2).
+ * This is also defined in VBox/nasm.mac. */
+//#define UART_BASE   0x2f8 /* COM2 */
+#define UART_BASE   0x3f8 /* COM1 */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <iprt/log.h>
+#include <iprt/asm.h>
+#include <iprt/stdarg.h>
+#include <iprt/string.h>
+
+
+/*******************************************************************************
+*   Internal Functions                                                         *
+*******************************************************************************/
+static DECLCALLBACK(size_t) rtLogComOutput(void *pv, const char *pachChars, size_t cbChars);
+
+
+/**
+ * Prints a formatted string to the serial port used for logging.
+ *
+ * @returns Number of bytes written.
+ * @param   pszFormat   Format string.
+ * @param   ...         Optional arguments specified in the format string.
+ */
+RTDECL(size_t) RTLogComPrintf(const char *pszFormat, ...)
+{
+    va_list     args;
+    size_t      cb;
+    va_start(args, pszFormat);
+    cb = RTLogComPrintfV(pszFormat, args);
+    va_end(args);
+
+    return cb;
+}
+
+
+/**
+ * Prints a formatted string to the serial port used for logging.
+ *
+ * @returns Number of bytes written.
+ * @param   pszFormat   Format string.
+ * @param   args        Optional arguments specified in the format string.
+ */
+RTDECL(size_t) RTLogComPrintfV(const char *pszFormat, va_list args)
+{
+    return RTLogFormatV(rtLogComOutput, NULL, pszFormat, args);
+}
+
+
+/**
+ * Callback for RTLogFormatV which writes to the com port.
+ * See PFNLOGOUTPUT() for details.
+ */
+static DECLCALLBACK(size_t) rtLogComOutput(void *pv, const char *pachChars, size_t cbChars)
+{
+    if (cbChars)
+        RTLogWriteCom(pachChars, cbChars);
+    return cbChars;
+}
+
+
+/**
+ * Write log buffer to COM port.
+ *
+ * @param   pach        Pointer to the buffer to write.
+ * @param   cb          Number of bytes to write.
+ */
+RTDECL(void) RTLogWriteCom(const char *pach, size_t cb)
+{
+    for (const uint8_t *pu8 = (const uint8_t *)pach; cb-- > 0; pu8++)
+    {
+        /* expand \n -> \r\n */
+        if (*pu8 == '\n')
+            RTLogWriteCom("\r", 1);
+
+        /* Check if port is ready. */
+        register unsigned   cMaxWait = ~0;
+        register uint8_t    u8;
+        do
+        {
+            u8 = ASMInU8(UART_BASE + 5);
+            cMaxWait--;
+        } while (!(u8 & 0x20) && u8 != 0xff && cMaxWait);
+
+        /* write */
+        ASMOutU8(UART_BASE, *pu8);
+    }
+}
+