utdebug.c

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_trace_u32
 *
 * PARAMETERS:  Line_number         - Caller's line number
 *              Dbg_info            - Contains:
 *                  Proc_name           - Caller's procedure name
 *                  Module_name         - Caller's module name
 *                  Component_id        - Caller's component ID
 *              Integer             - Integer to display
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function entry trace.  Prints only if TRACE_FUNCTIONS bit is
 *              set in Debug_level
 *
 ****************************************************************************/

void
acpi_ut_trace_u32 (
	u32                     line_number,
	acpi_debug_print_info   *dbg_info,
	u32                     integer)
{

	acpi_gbl_nesting_level++;
	acpi_ut_track_stack_ptr ();

	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
			"%s %08X\n", acpi_gbl_fn_entry_str, integer);
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_exit
 *
 * PARAMETERS:  Line_number         - Caller's line number
 *              Dbg_info            - Contains:
 *                  Proc_name           - Caller's procedure name
 *                  Module_name         - Caller's module name
 *                  Component_id        - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
 *              set in Debug_level
 *
 ****************************************************************************/

void
acpi_ut_exit (
	u32                     line_number,
	acpi_debug_print_info   *dbg_info)
{

	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
			"%s\n", acpi_gbl_fn_exit_str);

	acpi_gbl_nesting_level--;
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_status_exit
 *
 * PARAMETERS:  Line_number         - Caller's line number
 *              Dbg_info            - Contains:
 *                  Proc_name           - Caller's procedure name
 *                  Module_name         - Caller's module name
 *                  Component_id        - Caller's component ID
 *              Status              - Exit status code
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
 *              set in Debug_level. Prints exit status also.
 *
 ****************************************************************************/

void
acpi_ut_status_exit (
	u32                     line_number,
	acpi_debug_print_info   *dbg_info,
	acpi_status             status)
{

	if (ACPI_SUCCESS (status)) {
		acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
				"%s %s\n", acpi_gbl_fn_exit_str,
				acpi_format_exception (status));
	}
	else {
		acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
				"%s ****Exception****: %s\n", acpi_gbl_fn_exit_str,
				acpi_format_exception (status));
	}

	acpi_gbl_nesting_level--;
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_value_exit
 *
 * PARAMETERS:  Line_number         - Caller's line number
 *              Dbg_info            - Contains:
 *                  Proc_name           - Caller's procedure name
 *                  Module_name         - Caller's module name
 *                  Component_id        - Caller's component ID
 *              Value               - Value to be printed with exit msg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
 *              set in Debug_level. Prints exit value also.
 *
 ****************************************************************************/

void
acpi_ut_value_exit (
	u32                     line_number,
	acpi_debug_print_info   *dbg_info,
	acpi_integer            value)
{

	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
			"%s %8.8X%8.8X\n", acpi_gbl_fn_exit_str, HIDWORD(value), LODWORD(value));

	acpi_gbl_nesting_level--;
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_ptr_exit
 *
 * PARAMETERS:  Line_number         - Caller's line number
 *              Dbg_info            - Contains:
 *                  Proc_name           - Caller's procedure name
 *                  Module_name         - Caller's module name
 *                  Component_id        - Caller's component ID
 *              Value               - Value to be printed with exit msg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
 *              set in Debug_level. Prints exit value also.
 *
 ****************************************************************************/

void
acpi_ut_ptr_exit (
	u32                     line_number,
	acpi_debug_print_info   *dbg_info,
	u8                      *ptr)
{

	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
			"%s %p\n", acpi_gbl_fn_exit_str, ptr);

	acpi_gbl_nesting_level--;
}

#endif


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_dump_buffer
 *
 * PARAMETERS:  Buffer              - Buffer to dump
 *              Count               - Amount to dump, in bytes
 *              Display             - BYTE, WORD, DWORD, or QWORD display
 *              Component_iD        - Caller's component ID
 *
 * RETURN:      None
 *
 * DESCRIPTION: Generic dump buffer in both hex and ascii.
 *
 ****************************************************************************/

void
acpi_ut_dump_buffer (
	u8                      *buffer,
	u32                     count,
	u32                     display,
	u32                     component_id)
{
	u32                     i = 0;
	u32                     j;
	u32                     temp32;
	u8                      buf_char;


	/* Only dump the buffer if tracing is enabled */

	if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
		(component_id & acpi_dbg_layer))) {
		return;
	}


	/*
	 * Nasty little dump buffer routine!
	 */
	while (i < count) {
		/* Print current offset */

		acpi_os_printf ("%05X  ", i);


		/* Print 16 hex chars */

		for (j = 0; j < 16;) {
			if (i + j >= count) {
				acpi_os_printf ("\n");
				return;
			}

			/* Make sure that the s8 doesn't get sign-extended! */

			switch (display) {
			/* Default is BYTE display */

			default:

				acpi_os_printf ("%02X ",
						*((u8 *) &buffer[i + j]));
				j += 1;
				break;


			case DB_WORD_DISPLAY:

				MOVE_UNALIGNED16_TO_32 (&temp32,
						 &buffer[i + j]);
				acpi_os_printf ("%04X ", temp32);
				j += 2;
				break;


			case DB_DWORD_DISPLAY:

				MOVE_UNALIGNED32_TO_32 (&temp32,
						 &buffer[i + j]);
				acpi_os_printf ("%08X ", temp32);
				j += 4;
				break;


			case DB_QWORD_DISPLAY:

				MOVE_UNALIGNED32_TO_32 (&temp32,
						 &buffer[i + j]);
				acpi_os_printf ("%08X", temp32);

				MOVE_UNALIGNED32_TO_32 (&temp32,
						 &buffer[i + j + 4]);
				acpi_os_printf ("%08X ", temp32);
				j += 8;
				break;
			}
		}


		/*
		 * Print the ASCII equivalent characters
		 * But watch out for the bad unprintable ones...
		 */

		for (j = 0; j < 16; j++) {
			if (i + j >= count) {
				acpi_os_printf ("\n");
				return;
			}

			buf_char = buffer[i + j];
			if ((buf_char > 0x1F && buf_char < 0x2E) ||
				(buf_char > 0x2F && buf_char < 0x61) ||
				(buf_char > 0x60 && buf_char < 0x7F)) {
				acpi_os_printf ("%c", buf_char);
			}
			else {
				acpi_os_printf (".");
			}
		}

		/* Done with that line. */

		acpi_os_printf ("\n");
		i += 16;
	}

	return;
}