dscontrol.c (bf61c8840efe60fd8f91446860b63338fb424158) dscontrol.c (1d1ea1b723d9f239f736b8cf284327cbbf9d15d1)
1/******************************************************************************
2 *
3 * Module Name: dscontrol - Support for execution control opcodes -
4 * if/else/while/return
5 *
6 *****************************************************************************/
7
8/*

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73
74 ACPI_FUNCTION_NAME(ds_exec_begin_control_op);
75
76 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n",
77 op, op->common.aml_opcode, walk_state));
78
79 switch (op->common.aml_opcode) {
80 case AML_WHILE_OP:
1/******************************************************************************
2 *
3 * Module Name: dscontrol - Support for execution control opcodes -
4 * if/else/while/return
5 *
6 *****************************************************************************/
7
8/*

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73
74 ACPI_FUNCTION_NAME(ds_exec_begin_control_op);
75
76 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n",
77 op, op->common.aml_opcode, walk_state));
78
79 switch (op->common.aml_opcode) {
80 case AML_WHILE_OP:
81
82 /*
83 * If this is an additional iteration of a while loop, continue.
84 * There is no need to allocate a new control state.
85 */
86 if (walk_state->control_state) {
87 if (walk_state->control_state->control.
88 aml_predicate_start ==
89 (walk_state->parser_state.aml - 1)) {

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94 ACPI_CONTROL_CONDITIONAL_EXECUTING;
95 break;
96 }
97 }
98
99 /*lint -fallthrough */
100
101 case AML_IF_OP:
81 /*
82 * If this is an additional iteration of a while loop, continue.
83 * There is no need to allocate a new control state.
84 */
85 if (walk_state->control_state) {
86 if (walk_state->control_state->control.
87 aml_predicate_start ==
88 (walk_state->parser_state.aml - 1)) {

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93 ACPI_CONTROL_CONDITIONAL_EXECUTING;
94 break;
95 }
96 }
97
98 /*lint -fallthrough */
99
100 case AML_IF_OP:
102
103 /*
104 * IF/WHILE: Create a new control state to manage these
105 * constructs. We need to manage these as a stack, in order
106 * to handle nesting.
107 */
108 control_state = acpi_ut_create_control_state();
109 if (!control_state) {
110 status = AE_NO_MEMORY;

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137
138 break;
139
140 case AML_RETURN_OP:
141
142 break;
143
144 default:
101 /*
102 * IF/WHILE: Create a new control state to manage these
103 * constructs. We need to manage these as a stack, in order
104 * to handle nesting.
105 */
106 control_state = acpi_ut_create_control_state();
107 if (!control_state) {
108 status = AE_NO_MEMORY;

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135
136 break;
137
138 case AML_RETURN_OP:
139
140 break;
141
142 default:
143
145 break;
146 }
147
148 return (status);
149}
150
151/*******************************************************************************
152 *

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339 /* End the control method execution right now */
340
341 status = AE_CTRL_TERMINATE;
342 break;
343
344 case AML_NOOP_OP:
345
346 /* Just do nothing! */
144 break;
145 }
146
147 return (status);
148}
149
150/*******************************************************************************
151 *

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338 /* End the control method execution right now */
339
340 status = AE_CTRL_TERMINATE;
341 break;
342
343 case AML_NOOP_OP:
344
345 /* Just do nothing! */
346
347 break;
348
349 case AML_BREAK_POINT_OP:
350
351 /*
352 * Set the single-step flag. This will cause the debugger (if present)
353 * to break to the console within the AML debugger at the start of the
354 * next AML instruction.

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348
349 case AML_BREAK_POINT_OP:
350
351 /*
352 * Set the single-step flag. This will cause the debugger (if present)
353 * to break to the console within the AML debugger at the start of the
354 * next AML instruction.

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