Quelle  exdebug.c   Sprache: C

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: exdebug - Support for stores to the AML Debug Object
 *
 * Copyright (C) 2000 - 2025, Intel Corp.
 *
 *****************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acinterp.h"

#define _COMPONENT          ACPI_EXECUTER
ACPI_MODULE_NAME("exdebug")

#ifndef ACPI_NO_ERROR_MESSAGES
/*******************************************************************************
 *
 * FUNCTION:    acpi_ex_do_debug_object
 *
 * PARAMETERS:  source_desc         - Object to be output to "Debug Object"
 *              level               - Indentation level (used for packages)
 *              index               - Current package element, zero if not pkg
 *
 * RETURN:      None
 *
 * DESCRIPTION: Handles stores to the AML Debug Object. For example:
 *              Store(INT1, Debug)
 *
 * This function is not compiled if ACPI_NO_ERROR_MESSAGES is set.
 *
 * This function is only enabled if acpi_gbl_enable_aml_debug_object is set, or
 * if ACPI_LV_DEBUG_OBJECT is set in the acpi_dbg_level. Thus, in the normal
 * operational case, stores to the debug object are ignored but can be easily
 * enabled if necessary.
 *
 ******************************************************************************/
void
acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
   u32 level, u32 index)
{
 u32 i;
 u32 timer;
 union acpi_operand_object *object_desc;
 u32 value;

 ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);

 /* Output must be enabled via the debug_object global or the dbg_level */

 if (!acpi_gbl_enable_aml_debug_object &&
     !(acpi_dbg_level & ACPI_LV_DEBUG_OBJECT)) {
  return_VOID;
 }

 /* Newline -- don't emit the line header */

 if (source_desc &&
     (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) &&
     (source_desc->common.type == ACPI_TYPE_STRING)) {
  if ((source_desc->string.length == 1) &&
      (*source_desc->string.pointer == '\n')) {
   acpi_os_printf("\n");
   return_VOID;
  }
 }

 /*
 * Print line header as long as we are not in the middle of an
 * object display
 */
 if (!((level > 0) && index == 0)) {
  if (acpi_gbl_display_debug_timer) {
   /*
 * We will emit the current timer value (in microseconds) with each
 * debug output. Only need the lower 26 bits. This allows for 67
 * million microseconds or 67 seconds before rollover.
 *
 * Convert 100 nanosecond units to microseconds
 */
   timer = ((u32)acpi_os_get_timer() / 10);
   timer &= 0x03FFFFFF;

   acpi_os_printf("ACPI Debug: T=0x%8.8X %*s", timer,
           level, " ");
  } else {
   acpi_os_printf("ACPI Debug: %*s", level, " ");
  }
 }

 /* Display the index for package output only */

 if (index > 0) {
  acpi_os_printf("(%.2u) ", index - 1);
 }

 if (!source_desc) {
  acpi_os_printf("[Null Object]\n");
  return_VOID;
 }

 if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {

  /* No object type prefix needed for integers and strings */

  if ((source_desc->common.type != ACPI_TYPE_INTEGER) &&
      (source_desc->common.type != ACPI_TYPE_STRING)) {
   acpi_os_printf("%s ",
           acpi_ut_get_object_type_name
           (source_desc));
  }

  if (!acpi_ut_valid_internal_object(source_desc)) {
   acpi_os_printf("%p, Invalid Internal Object!\n",
           source_desc);
   return_VOID;
  }
 } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
     ACPI_DESC_TYPE_NAMED) {
  acpi_os_printf("%s (Node %p)\n",
          acpi_ut_get_type_name(((struct
             acpi_namespace_node *)
            source_desc)->type),
          source_desc);
  return_VOID;
 } else {
  return_VOID;
 }

 /* source_desc is of type ACPI_DESC_TYPE_OPERAND */

 switch (source_desc->common.type) {
 case ACPI_TYPE_INTEGER:

  /* Output correct integer width */

  if (acpi_gbl_integer_byte_width == 4) {
   acpi_os_printf("0x%8.8X\n",
           (u32)source_desc->integer.value);
  } else {
   acpi_os_printf("0x%8.8X%8.8X\n",
           ACPI_FORMAT_UINT64(source_desc->integer.
         value));
  }
  break;

 case ACPI_TYPE_BUFFER:

  acpi_os_printf("[0x%.2X]\n", (u32)source_desc->buffer.length);
  acpi_ut_dump_buffer(source_desc->buffer.pointer,
        (source_desc->buffer.length < 256) ?
        source_desc->buffer.length : 256,
        DB_BYTE_DISPLAY, 0);
  break;

 case ACPI_TYPE_STRING:

  acpi_os_printf("\"%s\"\n", source_desc->string.pointer);
  break;

 case ACPI_TYPE_PACKAGE:

  acpi_os_printf("(Contains 0x%.2X Elements):\n",
          source_desc->package.count);

  /* Output the entire contents of the package */

  for (i = 0; i < source_desc->package.count; i++) {
   acpi_ex_do_debug_object(source_desc->package.
      elements[i], level + 4, i + 1);
  }
  break;

 case ACPI_TYPE_LOCAL_REFERENCE:

  acpi_os_printf("[%s] ",
          acpi_ut_get_reference_name(source_desc));

  /* Decode the reference */

  switch (source_desc->reference.class) {
  case ACPI_REFCLASS_INDEX:

   acpi_os_printf("0x%X\n", source_desc->reference.value);
   break;

  case ACPI_REFCLASS_TABLE:

   /* Case for ddb_handle */

   acpi_os_printf("Table Index 0x%X\n",
           source_desc->reference.value);
   return_VOID;

  default:

   break;
  }

  acpi_os_printf(" ");

  /* Check for valid node first, then valid object */

  if (source_desc->reference.node) {
   if (ACPI_GET_DESCRIPTOR_TYPE
       (source_desc->reference.node) !=
       ACPI_DESC_TYPE_NAMED) {
    acpi_os_printf
        (" %p - Not a valid namespace node\n",
         source_desc->reference.node);
   } else {
    acpi_os_printf("Node %p [%4.4s] ",
            source_desc->reference.node,
            (source_desc->reference.node)->
            name.ascii);

    switch ((source_desc->reference.node)->type) {

     /* These types have no attached object */

    case ACPI_TYPE_DEVICE:
     acpi_os_printf("Device\n");
     break;

    case ACPI_TYPE_THERMAL:
     acpi_os_printf("Thermal Zone\n");
     break;

    default:

     acpi_ex_do_debug_object((source_desc->
         reference.
         node)->object,
        level + 4, 0);
     break;
    }
   }
  } else if (source_desc->reference.object) {
   if (ACPI_GET_DESCRIPTOR_TYPE
       (source_desc->reference.object) ==
       ACPI_DESC_TYPE_NAMED) {

    /* Reference object is a namespace node */

    acpi_ex_do_debug_object(ACPI_CAST_PTR
       (union
        acpi_operand_object,
        source_desc->reference.
        object), level + 4, 0);
   } else {
    object_desc = source_desc->reference.object;
    value = source_desc->reference.value;

    switch (object_desc->common.type) {
    case ACPI_TYPE_BUFFER:

     acpi_os_printf("Buffer[%u] = 0x%2.2X\n",
             value,
             *source_desc->reference.
             index_pointer);
     break;

    case ACPI_TYPE_STRING:

     acpi_os_printf
         ("String[%u] = \"%c\" (0x%2.2X)\n",
          value,
          *source_desc->reference.
          index_pointer,
          *source_desc->reference.
          index_pointer);
     break;

    case ACPI_TYPE_PACKAGE:

     acpi_os_printf("Package[%u] = ", value);
     if (!(*source_desc->reference.where)) {
      acpi_os_printf
          ("[Uninitialized Package Element]\n");
     } else {
      acpi_ex_do_debug_object
          (*source_desc->reference.
           where, level + 4, 0);
     }
     break;

    default:

     acpi_os_printf
         ("Unknown Reference object type %X\n",
          object_desc->common.type);
     break;
    }
   }
  }
  break;

 default:

  acpi_os_printf("(Descriptor %p)\n", source_desc);
  break;
 }

 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
 return_VOID;
}
#endif