dbxface.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:8k
- /*******************************************************************************
- *
- * Module Name: dbxface - AML Debugger external interfaces
- * $Revision: 45 $
- *
- ******************************************************************************/
- /*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include "acpi.h"
- #include "acparser.h"
- #include "amlcode.h"
- #include "acnamesp.h"
- #include "acparser.h"
- #include "acevents.h"
- #include "acinterp.h"
- #include "acdebug.h"
- #ifdef ENABLE_DEBUGGER
- #define _COMPONENT ACPI_DEBUGGER
- MODULE_NAME ("dbxface")
- /*******************************************************************************
- *
- * FUNCTION: Acpi_db_single_step
- *
- * PARAMETERS: Walk_state - Current walk
- * Op - Current executing op
- * Opcode_class - Class of the current AML Opcode
- *
- * RETURN: Status
- *
- * DESCRIPTION: Called just before execution of an AML opcode.
- *
- ******************************************************************************/
- acpi_status
- acpi_db_single_step (
- acpi_walk_state *walk_state,
- acpi_parse_object *op,
- u32 opcode_class)
- {
- acpi_parse_object *next;
- acpi_status status = AE_OK;
- u32 original_debug_level;
- acpi_parse_object *display_op;
- FUNCTION_ENTRY ();
- /* Is there a breakpoint set? */
- if (walk_state->method_breakpoint) {
- /* Check if the breakpoint has been reached or passed */
- if (walk_state->method_breakpoint <= op->aml_offset) {
- /* Hit the breakpoint, resume single step, reset breakpoint */
- acpi_os_printf ("***Break*** at AML offset %Xn", op->aml_offset);
- acpi_gbl_cm_single_step = TRUE;
- acpi_gbl_step_to_next_call = FALSE;
- walk_state->method_breakpoint = 0;
- }
- }
- /*
- * Check if this is an opcode that we are interested in --
- * namely, opcodes that have arguments
- */
- if (op->opcode == AML_INT_NAMEDFIELD_OP) {
- return (AE_OK);
- }
- switch (opcode_class) {
- case AML_CLASS_UNKNOWN:
- case AML_CLASS_ARGUMENT: /* constants, literals, etc. do nothing */
- return (AE_OK);
- break;
- }
- /*
- * Under certain debug conditions, display this opcode and its operands
- */
- if ((acpi_gbl_db_output_to_file) ||
- (acpi_gbl_cm_single_step) ||
- (acpi_dbg_level & ACPI_LV_PARSE)) {
- if ((acpi_gbl_db_output_to_file) ||
- (acpi_dbg_level & ACPI_LV_PARSE)) {
- acpi_os_printf ("n[Aml_debug] Next AML Opcode to execute:n");
- }
- /*
- * Display this op (and only this op - zero out the NEXT field temporarily,
- * and disable parser trace output for the duration of the display because
- * we don't want the extraneous debug output)
- */
- original_debug_level = acpi_dbg_level;
- acpi_dbg_level &= ~(ACPI_LV_PARSE | ACPI_LV_FUNCTIONS);
- next = op->next;
- op->next = NULL;
- display_op = op;
- if (op->parent) {
- if ((op->parent->opcode == AML_IF_OP) ||
- (op->parent->opcode == AML_WHILE_OP)) {
- display_op = op->parent;
- }
- }
- /* Now we can display it */
- acpi_db_display_op (walk_state, display_op, ACPI_UINT32_MAX);
- if ((op->opcode == AML_IF_OP) ||
- (op->opcode == AML_WHILE_OP)) {
- if (walk_state->control_state->common.value) {
- acpi_os_printf ("Predicate was TRUE, executed blockn");
- }
- else {
- acpi_os_printf ("Predicate is FALSE, skipping blockn");
- }
- }
- else if (op->opcode == AML_ELSE_OP) {
- /* TBD */
- }
- /* Restore everything */
- op->next = next;
- acpi_os_printf ("n");
- acpi_dbg_level = original_debug_level;
- }
- /* If we are not single stepping, just continue executing the method */
- if (!acpi_gbl_cm_single_step) {
- return (AE_OK);
- }
- /*
- * If we are executing a step-to-call command,
- * Check if this is a method call.
- */
- if (acpi_gbl_step_to_next_call) {
- if (op->opcode != AML_INT_METHODCALL_OP) {
- /* Not a method call, just keep executing */
- return (AE_OK);
- }
- /* Found a method call, stop executing */
- acpi_gbl_step_to_next_call = FALSE;
- }
- /*
- * If the next opcode is a method call, we will "step over" it
- * by default.
- */
- if (op->opcode == AML_INT_METHODCALL_OP) {
- acpi_gbl_cm_single_step = FALSE; /* No more single step while executing called method */
- /* Set the breakpoint on the call, it will stop execution as soon as we return */
- /* TBD: [Future] don't kill the user breakpoint! */
- walk_state->method_breakpoint = /* Op->Aml_offset + */ 1; /* Must be non-zero! */
- }
- /* TBD: [Investigate] what are the namespace locking issues here */
- /* Acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); */
- /* Go into the command loop and await next user command */
- acpi_gbl_method_executing = TRUE;
- status = AE_CTRL_TRUE;
- while (status == AE_CTRL_TRUE) {
- if (acpi_gbl_debugger_configuration == DEBUGGER_MULTI_THREADED) {
- /* Handshake with the front-end that gets user command lines */
- acpi_ut_release_mutex (ACPI_MTX_DEBUG_CMD_COMPLETE);
- acpi_ut_acquire_mutex (ACPI_MTX_DEBUG_CMD_READY);
- }
- else {
- /* Single threaded, we must get a command line ourselves */
- /* Force output to console until a command is entered */
- acpi_db_set_output_destination (DB_CONSOLE_OUTPUT);
- /* Different prompt if method is executing */
- if (!acpi_gbl_method_executing) {
- acpi_os_printf ("%1c ", DB_COMMAND_PROMPT);
- }
- else {
- acpi_os_printf ("%1c ", DB_EXECUTE_PROMPT);
- }
- /* Get the user input line */
- acpi_os_get_line (acpi_gbl_db_line_buf);
- }
- status = acpi_db_command_dispatch (acpi_gbl_db_line_buf, walk_state, op);
- }
- /* Acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); */
- /* User commands complete, continue execution of the interrupted method */
- return (status);
- }
- /*******************************************************************************
- *
- * FUNCTION: Acpi_db_initialize
- *
- * PARAMETERS: None
- *
- * RETURN: Status
- *
- * DESCRIPTION: Init and start debugger
- *
- ******************************************************************************/
- int
- acpi_db_initialize (void)
- {
- /* Init globals */
- acpi_gbl_db_buffer = acpi_os_callocate (ACPI_DEBUG_BUFFER_SIZE);
- /* Initial scope is the root */
- acpi_gbl_db_scope_buf [0] = '\';
- acpi_gbl_db_scope_buf [1] = 0;
- /*
- * If configured for multi-thread support, the debug executor runs in
- * a separate thread so that the front end can be in another address
- * space, environment, or even another machine.
- */
- if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
- /* These were created with one unit, grab it */
- acpi_ut_acquire_mutex (ACPI_MTX_DEBUG_CMD_COMPLETE);
- acpi_ut_acquire_mutex (ACPI_MTX_DEBUG_CMD_READY);
- /* Create the debug execution thread to execute commands */
- acpi_os_queue_for_execution (0, acpi_db_execute_thread, NULL);
- }
- if (!acpi_gbl_db_opt_verbose) {
- acpi_gbl_db_disasm_indent = " ";
- acpi_gbl_db_opt_disasm = TRUE;
- acpi_gbl_db_opt_stats = FALSE;
- }
- return (0);
- }
- /*******************************************************************************
- *
- * FUNCTION: Acpi_db_terminate
- *
- * PARAMETERS: None
- *
- * RETURN: Status
- *
- * DESCRIPTION: Stop debugger
- *
- ******************************************************************************/
- void
- acpi_db_terminate (void)
- {
- if (acpi_gbl_db_table_ptr) {
- acpi_os_free (acpi_gbl_db_table_ptr);
- }
- if (acpi_gbl_db_buffer) {
- acpi_os_free (acpi_gbl_db_buffer);
- }
- }
- #endif /* ENABLE_DEBUGGER */