520 lines
14 KiB
C
520 lines
14 KiB
C
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/*******************************************************************************
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*
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* Module Name: dbxface - AML Debugger external interfaces
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2017, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "amlcode.h"
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#include "acdebug.h"
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#include "acinterp.h"
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#define _COMPONENT ACPI_CA_DEBUGGER
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ACPI_MODULE_NAME("dbxface")
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/* Local prototypes */
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static acpi_status
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acpi_db_start_command(struct acpi_walk_state *walk_state,
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union acpi_parse_object *op);
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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void acpi_db_method_end(struct acpi_walk_state *walk_state);
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#endif
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_start_command
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*
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* PARAMETERS: walk_state - Current walk
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* op - Current executing Op, from AML interpreter
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enter debugger command loop
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*
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******************************************************************************/
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static acpi_status
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acpi_db_start_command(struct acpi_walk_state *walk_state,
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union acpi_parse_object *op)
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{
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acpi_status status;
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/* TBD: [Investigate] are there namespace locking issues here? */
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/* acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); */
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/* Go into the command loop and await next user command */
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acpi_gbl_method_executing = TRUE;
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status = AE_CTRL_TRUE;
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while (status == AE_CTRL_TRUE) {
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/* Notify the completion of the command */
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status = acpi_os_notify_command_complete();
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if (ACPI_FAILURE(status)) {
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goto error_exit;
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}
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/* Wait the readiness of the command */
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status = acpi_os_wait_command_ready();
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if (ACPI_FAILURE(status)) {
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goto error_exit;
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}
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status =
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acpi_db_command_dispatch(acpi_gbl_db_line_buf, walk_state,
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op);
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}
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/* acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); */
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error_exit:
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if (ACPI_FAILURE(status) && status != AE_CTRL_TERMINATE) {
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ACPI_EXCEPTION((AE_INFO, status,
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"While parsing/handling command line"));
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}
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return (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_signal_break_point
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*
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* PARAMETERS: walk_state - Current walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Called for AML_BREAKPOINT_OP
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*
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******************************************************************************/
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void acpi_db_signal_break_point(struct acpi_walk_state *walk_state)
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{
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#ifndef ACPI_APPLICATION
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if (acpi_gbl_db_thread_id != acpi_os_get_thread_id()) {
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return;
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}
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#endif
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/*
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* Set the single-step flag. This will cause the debugger (if present)
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* to break to the console within the AML debugger at the start of the
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* next AML instruction.
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*/
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acpi_gbl_cm_single_step = TRUE;
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acpi_os_printf("**break** Executed AML BreakPoint opcode\n");
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_single_step
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*
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* PARAMETERS: walk_state - Current walk
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* op - Current executing op (from aml interpreter)
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* opcode_class - Class of the current AML Opcode
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*
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* RETURN: Status
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*
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* DESCRIPTION: Called just before execution of an AML opcode.
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*
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******************************************************************************/
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acpi_status
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acpi_db_single_step(struct acpi_walk_state *walk_state,
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union acpi_parse_object *op, u32 opcode_class)
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{
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union acpi_parse_object *next;
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acpi_status status = AE_OK;
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u32 original_debug_level;
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union acpi_parse_object *display_op;
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union acpi_parse_object *parent_op;
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u32 aml_offset;
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ACPI_FUNCTION_ENTRY();
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#ifndef ACPI_APPLICATION
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if (acpi_gbl_db_thread_id != acpi_os_get_thread_id()) {
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return (AE_OK);
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}
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#endif
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/* Check the abort flag */
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if (acpi_gbl_abort_method) {
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acpi_gbl_abort_method = FALSE;
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return (AE_ABORT_METHOD);
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}
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aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
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walk_state->parser_state.aml_start);
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/* Check for single-step breakpoint */
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if (walk_state->method_breakpoint &&
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(walk_state->method_breakpoint <= aml_offset)) {
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/* Check if the breakpoint has been reached or passed */
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/* Hit the breakpoint, resume single step, reset breakpoint */
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acpi_os_printf("***Break*** at AML offset %X\n", aml_offset);
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acpi_gbl_cm_single_step = TRUE;
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acpi_gbl_step_to_next_call = FALSE;
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walk_state->method_breakpoint = 0;
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}
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/* Check for user breakpoint (Must be on exact Aml offset) */
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else if (walk_state->user_breakpoint &&
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(walk_state->user_breakpoint == aml_offset)) {
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acpi_os_printf("***UserBreakpoint*** at AML offset %X\n",
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aml_offset);
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acpi_gbl_cm_single_step = TRUE;
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acpi_gbl_step_to_next_call = FALSE;
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walk_state->method_breakpoint = 0;
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}
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/*
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* Check if this is an opcode that we are interested in --
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* namely, opcodes that have arguments
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*/
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if (op->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
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return (AE_OK);
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}
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switch (opcode_class) {
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case AML_CLASS_UNKNOWN:
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case AML_CLASS_ARGUMENT: /* constants, literals, etc. do nothing */
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return (AE_OK);
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default:
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/* All other opcodes -- continue */
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break;
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}
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/*
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* Under certain debug conditions, display this opcode and its operands
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*/
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if ((acpi_gbl_db_output_to_file) ||
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(acpi_gbl_cm_single_step) || (acpi_dbg_level & ACPI_LV_PARSE)) {
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if ((acpi_gbl_db_output_to_file) ||
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(acpi_dbg_level & ACPI_LV_PARSE)) {
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acpi_os_printf
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("\nAML Debug: Next AML Opcode to execute:\n");
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}
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/*
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* Display this op (and only this op - zero out the NEXT field
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* temporarily, and disable parser trace output for the duration of
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* the display because we don't want the extraneous debug output)
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*/
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original_debug_level = acpi_dbg_level;
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acpi_dbg_level &= ~(ACPI_LV_PARSE | ACPI_LV_FUNCTIONS);
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next = op->common.next;
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op->common.next = NULL;
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display_op = op;
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parent_op = op->common.parent;
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if (parent_op) {
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if ((walk_state->control_state) &&
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(walk_state->control_state->common.state ==
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ACPI_CONTROL_PREDICATE_EXECUTING)) {
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/*
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* We are executing the predicate of an IF or WHILE statement
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* Search upwards for the containing IF or WHILE so that the
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* entire predicate can be displayed.
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*/
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while (parent_op) {
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if ((parent_op->common.aml_opcode ==
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AML_IF_OP)
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AML_WHILE_OP)) {
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display_op = parent_op;
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break;
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}
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parent_op = parent_op->common.parent;
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}
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} else {
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while (parent_op) {
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if ((parent_op->common.aml_opcode ==
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AML_IF_OP)
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AML_ELSE_OP)
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|| (parent_op->common.aml_opcode ==
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AML_SCOPE_OP)
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|| (parent_op->common.aml_opcode ==
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AML_METHOD_OP)
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AML_WHILE_OP)) {
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break;
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}
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display_op = parent_op;
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parent_op = parent_op->common.parent;
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}
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}
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}
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/* Now we can display it */
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#ifdef ACPI_DISASSEMBLER
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acpi_dm_disassemble(walk_state, display_op, ACPI_UINT32_MAX);
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#endif
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if ((op->common.aml_opcode == AML_IF_OP) ||
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(op->common.aml_opcode == AML_WHILE_OP)) {
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if (walk_state->control_state->common.value) {
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acpi_os_printf
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("Predicate = [True], IF block was executed\n");
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} else {
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acpi_os_printf
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("Predicate = [False], Skipping IF block\n");
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}
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} else if (op->common.aml_opcode == AML_ELSE_OP) {
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acpi_os_printf
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("Predicate = [False], ELSE block was executed\n");
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}
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/* Restore everything */
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op->common.next = next;
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acpi_os_printf("\n");
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if ((acpi_gbl_db_output_to_file) ||
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(acpi_dbg_level & ACPI_LV_PARSE)) {
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acpi_os_printf("\n");
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}
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acpi_dbg_level = original_debug_level;
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}
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/* If we are not single stepping, just continue executing the method */
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if (!acpi_gbl_cm_single_step) {
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return (AE_OK);
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}
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/*
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* If we are executing a step-to-call command,
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* Check if this is a method call.
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*/
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if (acpi_gbl_step_to_next_call) {
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if (op->common.aml_opcode != AML_INT_METHODCALL_OP) {
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/* Not a method call, just keep executing */
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return (AE_OK);
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}
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/* Found a method call, stop executing */
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acpi_gbl_step_to_next_call = FALSE;
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}
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/*
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* If the next opcode is a method call, we will "step over" it
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* by default.
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*/
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if (op->common.aml_opcode == AML_INT_METHODCALL_OP) {
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/* Force no more single stepping while executing called method */
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acpi_gbl_cm_single_step = FALSE;
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/*
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* Set the breakpoint on/before the call, it will stop execution
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* as soon as we return
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*/
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walk_state->method_breakpoint = 1; /* Must be non-zero! */
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}
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acpi_ex_exit_interpreter();
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status = acpi_db_start_command(walk_state, op);
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acpi_ex_enter_interpreter();
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/* User commands complete, continue execution of the interrupted method */
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return (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_initialize_debugger
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Init and start debugger
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status acpi_initialize_debugger(void)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_initialize_debugger);
|
||
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|
|
||
|
|
/* Init globals */
|
||
|
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|
||
|
|
acpi_gbl_db_buffer = NULL;
|
||
|
|
acpi_gbl_db_filename = NULL;
|
||
|
|
acpi_gbl_db_output_to_file = FALSE;
|
||
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|
||
|
|
acpi_gbl_db_debug_level = ACPI_LV_VERBOSITY2;
|
||
|
|
acpi_gbl_db_console_debug_level = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES;
|
||
|
|
acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
|
||
|
|
|
||
|
|
acpi_gbl_db_opt_no_ini_methods = FALSE;
|
||
|
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|
||
|
|
acpi_gbl_db_buffer = acpi_os_allocate(ACPI_DEBUG_BUFFER_SIZE);
|
||
|
|
if (!acpi_gbl_db_buffer) {
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
memset(acpi_gbl_db_buffer, 0, ACPI_DEBUG_BUFFER_SIZE);
|
||
|
|
|
||
|
|
/* Initial scope is the root */
|
||
|
|
|
||
|
|
acpi_gbl_db_scope_buf[0] = AML_ROOT_PREFIX;
|
||
|
|
acpi_gbl_db_scope_buf[1] = 0;
|
||
|
|
acpi_gbl_db_scope_node = acpi_gbl_root_node;
|
||
|
|
|
||
|
|
/* Initialize user commands loop */
|
||
|
|
|
||
|
|
acpi_gbl_db_terminate_loop = FALSE;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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 */
|
||
|
|
|
||
|
|
status = acpi_os_initialize_debugger();
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
acpi_os_printf("Could not get debugger mutex\n");
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create the debug execution thread to execute commands */
|
||
|
|
|
||
|
|
acpi_gbl_db_threads_terminated = FALSE;
|
||
|
|
status = acpi_os_execute(OSL_DEBUGGER_MAIN_THREAD,
|
||
|
|
acpi_db_execute_thread, NULL);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
||
|
|
"Could not start debugger thread"));
|
||
|
|
acpi_gbl_db_threads_terminated = TRUE;
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
acpi_gbl_db_thread_id = acpi_os_get_thread_id();
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_initialize_debugger)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_terminate_debugger
|
||
|
|
*
|
||
|
|
* PARAMETERS: None
|
||
|
|
*
|
||
|
|
* RETURN: None
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Stop debugger
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
void acpi_terminate_debugger(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Terminate the AML Debugger */
|
||
|
|
|
||
|
|
acpi_gbl_db_terminate_loop = TRUE;
|
||
|
|
|
||
|
|
if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
|
||
|
|
|
||
|
|
/* Wait the AML Debugger threads */
|
||
|
|
|
||
|
|
while (!acpi_gbl_db_threads_terminated) {
|
||
|
|
acpi_os_sleep(100);
|
||
|
|
}
|
||
|
|
|
||
|
|
acpi_os_terminate_debugger();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (acpi_gbl_db_buffer) {
|
||
|
|
acpi_os_free(acpi_gbl_db_buffer);
|
||
|
|
acpi_gbl_db_buffer = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure that debug output is now disabled */
|
||
|
|
|
||
|
|
acpi_gbl_db_output_flags = ACPI_DB_DISABLE_OUTPUT;
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_terminate_debugger)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_set_debugger_thread_id
|
||
|
|
*
|
||
|
|
* PARAMETERS: thread_id - Debugger thread ID
|
||
|
|
*
|
||
|
|
* RETURN: None
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Set debugger thread ID
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
void acpi_set_debugger_thread_id(acpi_thread_id thread_id)
|
||
|
|
{
|
||
|
|
acpi_gbl_db_thread_id = thread_id;
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_set_debugger_thread_id)
|