1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /******************************************************************************
3 *
4 * Module Name: psopinfo - AML opcode information functions and dispatch tables
5 *
6 * Copyright (C) 2000 - 2020, Intel Corp.
7 *
8 *****************************************************************************/
9
10 #include <acpi/acpi.h>
11 #include "accommon.h"
12 #include "acparser.h"
13 #include "acopcode.h"
14 #include "amlcode.h"
15
16 #define _COMPONENT ACPI_PARSER
17 ACPI_MODULE_NAME("psopinfo")
18
19 static const u8 acpi_gbl_argument_count[] =
20 { 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 6 };
21
22 /*******************************************************************************
23 *
24 * FUNCTION: acpi_ps_get_opcode_info
25 *
26 * PARAMETERS: opcode - The AML opcode
27 *
28 * RETURN: A pointer to the info about the opcode.
29 *
30 * DESCRIPTION: Find AML opcode description based on the opcode.
31 * NOTE: This procedure must ALWAYS return a valid pointer!
32 *
33 ******************************************************************************/
34
acpi_ps_get_opcode_info(u16 opcode)35 const struct acpi_opcode_info *acpi_ps_get_opcode_info(u16 opcode)
36 {
37 #ifdef ACPI_DEBUG_OUTPUT
38 const char *opcode_name = "Unknown AML opcode";
39 #endif
40
41 ACPI_FUNCTION_NAME(ps_get_opcode_info);
42
43 /*
44 * Detect normal 8-bit opcode or extended 16-bit opcode
45 */
46 if (!(opcode & 0xFF00)) {
47
48 /* Simple (8-bit) opcode: 0-255, can't index beyond table */
49
50 return (&acpi_gbl_aml_op_info
51 [acpi_gbl_short_op_index[(u8)opcode]]);
52 }
53
54 if (((opcode & 0xFF00) == AML_EXTENDED_OPCODE) &&
55 (((u8)opcode) <= MAX_EXTENDED_OPCODE)) {
56
57 /* Valid extended (16-bit) opcode */
58
59 return (&acpi_gbl_aml_op_info
60 [acpi_gbl_long_op_index[(u8)opcode]]);
61 }
62 #if defined ACPI_ASL_COMPILER && defined ACPI_DEBUG_OUTPUT
63 #include "asldefine.h"
64
65 switch (opcode) {
66 case AML_RAW_DATA_BYTE:
67 opcode_name = "-Raw Data Byte-";
68 break;
69
70 case AML_RAW_DATA_WORD:
71 opcode_name = "-Raw Data Word-";
72 break;
73
74 case AML_RAW_DATA_DWORD:
75 opcode_name = "-Raw Data Dword-";
76 break;
77
78 case AML_RAW_DATA_QWORD:
79 opcode_name = "-Raw Data Qword-";
80 break;
81
82 case AML_RAW_DATA_BUFFER:
83 opcode_name = "-Raw Data Buffer-";
84 break;
85
86 case AML_RAW_DATA_CHAIN:
87 opcode_name = "-Raw Data Buffer Chain-";
88 break;
89
90 case AML_PACKAGE_LENGTH:
91 opcode_name = "-Package Length-";
92 break;
93
94 case AML_UNASSIGNED_OPCODE:
95 opcode_name = "-Unassigned Opcode-";
96 break;
97
98 case AML_DEFAULT_ARG_OP:
99 opcode_name = "-Default Arg-";
100 break;
101
102 default:
103 break;
104 }
105 #endif
106
107 /* Unknown AML opcode */
108
109 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%4.4X]\n", opcode_name, opcode));
110
111 return (&acpi_gbl_aml_op_info[_UNK]);
112 }
113
114 /*******************************************************************************
115 *
116 * FUNCTION: acpi_ps_get_opcode_name
117 *
118 * PARAMETERS: opcode - The AML opcode
119 *
120 * RETURN: A pointer to the name of the opcode (ASCII String)
121 * Note: Never returns NULL.
122 *
123 * DESCRIPTION: Translate an opcode into a human-readable string
124 *
125 ******************************************************************************/
126
acpi_ps_get_opcode_name(u16 opcode)127 const char *acpi_ps_get_opcode_name(u16 opcode)
128 {
129 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
130
131 const struct acpi_opcode_info *op;
132
133 op = acpi_ps_get_opcode_info(opcode);
134
135 /* Always guaranteed to return a valid pointer */
136
137 return (op->name);
138
139 #else
140 return ("OpcodeName unavailable");
141
142 #endif
143 }
144
145 /*******************************************************************************
146 *
147 * FUNCTION: acpi_ps_get_argument_count
148 *
149 * PARAMETERS: op_type - Type associated with the AML opcode
150 *
151 * RETURN: Argument count
152 *
153 * DESCRIPTION: Obtain the number of expected arguments for an AML opcode
154 *
155 ******************************************************************************/
156
acpi_ps_get_argument_count(u32 op_type)157 u8 acpi_ps_get_argument_count(u32 op_type)
158 {
159
160 if (op_type <= AML_TYPE_EXEC_6A_0T_1R) {
161 return (acpi_gbl_argument_count[op_type]);
162 }
163
164 return (0);
165 }
166
167 /*
168 * This table is directly indexed by the opcodes It returns
169 * an index into the opcode table (acpi_gbl_aml_op_info)
170 */
171 const u8 acpi_gbl_short_op_index[256] = {
172 /* 0 1 2 3 4 5 6 7 */
173 /* 8 9 A B C D E F */
174 /* 0x00 */ 0x00, 0x01, _UNK, _UNK, _UNK, _UNK, 0x02, _UNK,
175 /* 0x08 */ 0x03, _UNK, 0x04, 0x05, 0x06, 0x07, 0x6E, _UNK,
176 /* 0x10 */ 0x08, 0x09, 0x0a, 0x6F, 0x0b, 0x81, _UNK, _UNK,
177 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
178 /* 0x20 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
179 /* 0x28 */ _UNK, _UNK, _UNK, _UNK, _UNK, 0x63, _PFX, _PFX,
180 /* 0x30 */ 0x67, 0x66, 0x68, 0x65, 0x69, 0x64, 0x6A, 0x7D,
181 /* 0x38 */ 0x7F, 0x80, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
182 /* 0x40 */ _UNK, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
183 /* 0x48 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
184 /* 0x50 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
185 /* 0x58 */ _ASC, _ASC, _ASC, _UNK, _PFX, _UNK, _PFX, _ASC,
186 /* 0x60 */ 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13,
187 /* 0x68 */ 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, _UNK,
188 /* 0x70 */ 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22,
189 /* 0x78 */ 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
190 /* 0x80 */ 0x2b, 0x2c, 0x2d, 0x2e, 0x70, 0x71, 0x2f, 0x30,
191 /* 0x88 */ 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x72,
192 /* 0x90 */ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x73, 0x74,
193 /* 0x98 */ 0x75, 0x76, _UNK, _UNK, 0x77, 0x78, 0x79, 0x7A,
194 /* 0xA0 */ 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x60, 0x61,
195 /* 0xA8 */ 0x62, 0x82, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
196 /* 0xB0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
197 /* 0xB8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
198 /* 0xC0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
199 /* 0xC8 */ _UNK, _UNK, _UNK, _UNK, 0x44, _UNK, _UNK, _UNK,
200 /* 0xD0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
201 /* 0xD8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
202 /* 0xE0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
203 /* 0xE8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
204 /* 0xF0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
205 /* 0xF8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x45,
206 };
207
208 /*
209 * This table is indexed by the second opcode of the extended opcode
210 * pair. It returns an index into the opcode table (acpi_gbl_aml_op_info)
211 */
212 const u8 acpi_gbl_long_op_index[NUM_EXTENDED_OPCODE] = {
213 /* 0 1 2 3 4 5 6 7 */
214 /* 8 9 A B C D E F */
215 /* 0x00 */ _UNK, 0x46, 0x47, _UNK, _UNK, _UNK, _UNK, _UNK,
216 /* 0x08 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
217 /* 0x10 */ _UNK, _UNK, 0x48, 0x49, _UNK, _UNK, _UNK, _UNK,
218 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x7B,
219 /* 0x20 */ 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51,
220 /* 0x28 */ 0x52, 0x53, 0x54, _UNK, _UNK, _UNK, _UNK, _UNK,
221 /* 0x30 */ 0x55, 0x56, 0x57, 0x7e, _UNK, _UNK, _UNK, _UNK,
222 /* 0x38 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
223 /* 0x40 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
224 /* 0x48 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
225 /* 0x50 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
226 /* 0x58 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
227 /* 0x60 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
228 /* 0x68 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
229 /* 0x70 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
230 /* 0x78 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
231 /* 0x80 */ 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
232 /* 0x88 */ 0x7C,
233 };
234