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boot loader: bios IA32: Add optional timestamps to debug output

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This commit is contained in:
Ingo Weinhold 2013-10-08 20:48:08 +02:00
parent 908ce69d6e
commit 33def4258e
1 changed files with 37 additions and 7 deletions
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44
src/system/boot/platform/bios_ia32/debug.cpp
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@ -19,6 +19,10 @@
#include "serial.h"
//#define PRINT_TIME_STAMPS
// Define to print a TSC timestamp before each line of output.
static const char* const kDebugSyslogSignature = "Haiku syslog";
static char sBuffer[16384];
@ -28,22 +32,48 @@ static ring_buffer* sDebugSyslogBuffer = NULL;
static bool sPostCleanup = false;
#ifdef PRINT_TIME_STAMPS
extern "C" uint64 rdtsc();
#endif
static void
dprintf_args(const char *format, va_list args)
syslog_write(const char* buffer, size_t length)
{
char buffer[512];
int length = vsnprintf(buffer, sizeof(buffer), format, args);
if (length >= (int)sizeof(buffer))
length = sizeof(buffer) - 1;
if (sPostCleanup && sDebugSyslogBuffer != NULL) {
ring_buffer_write(sDebugSyslogBuffer, (const uint8*)buffer, length);
} else if (sBufferPosition + length < sizeof(sBuffer)) {
memcpy(sBuffer + sBufferPosition, buffer, length);
sBufferPosition += length;
}
}
static void
dprintf_args(const char *format, va_list args)
{
char buffer[512];
int length = vsnprintf(buffer, sizeof(buffer), format, args);
if (length == 0)
return;
if (length >= (int)sizeof(buffer))
length = sizeof(buffer) - 1;
#ifdef PRINT_TIME_STAMPS
static bool sNewLine = true;
if (sNewLine) {
char timeBuffer[32];
snprintf(timeBuffer, sizeof(timeBuffer), "[%" B_PRIu64 "] ", rdtsc());
syslog_write(timeBuffer, strlen(timeBuffer));
serial_puts(timeBuffer, strlen(timeBuffer));
}
sNewLine = buffer[length - 1] == '\n';
#endif // PRINT_TIME_STAMPS
syslog_write(buffer, length);
serial_puts(buffer, length);
if (platform_boot_options() & BOOT_OPTION_DEBUG_OUTPUT)