1 /****************************************************************************** 2 * 3 * Module Name: psopinfo - AML opcode information functions and dispatch tables 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #include <acpi/acpi.h> 45 #include "accommon.h" 46 #include "acparser.h" 47 #include "acopcode.h" 48 #include "amlcode.h" 49 50 #define _COMPONENT ACPI_PARSER 51 ACPI_MODULE_NAME("psopinfo") 52 53 extern const u8 acpi_gbl_short_op_index[]; 54 extern const u8 acpi_gbl_long_op_index[]; 55 56 static const u8 acpi_gbl_argument_count[] = 57 { 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 6 }; 58 59 /******************************************************************************* 60 * 61 * FUNCTION: acpi_ps_get_opcode_info 62 * 63 * PARAMETERS: opcode - The AML opcode 64 * 65 * RETURN: A pointer to the info about the opcode. 66 * 67 * DESCRIPTION: Find AML opcode description based on the opcode. 68 * NOTE: This procedure must ALWAYS return a valid pointer! 69 * 70 ******************************************************************************/ 71 72 const struct acpi_opcode_info *acpi_ps_get_opcode_info(u16 opcode) 73 { 74 ACPI_FUNCTION_NAME(ps_get_opcode_info); 75 76 /* 77 * Detect normal 8-bit opcode or extended 16-bit opcode 78 */ 79 if (!(opcode & 0xFF00)) { 80 81 /* Simple (8-bit) opcode: 0-255, can't index beyond table */ 82 83 return (&acpi_gbl_aml_op_info 84 [acpi_gbl_short_op_index[(u8)opcode]]); 85 } 86 87 if (((opcode & 0xFF00) == AML_EXTENDED_OPCODE) && 88 (((u8)opcode) <= MAX_EXTENDED_OPCODE)) { 89 90 /* Valid extended (16-bit) opcode */ 91 92 return (&acpi_gbl_aml_op_info 93 [acpi_gbl_long_op_index[(u8)opcode]]); 94 } 95 96 /* Unknown AML opcode */ 97 98 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, 99 "Unknown AML opcode [%4.4X]\n", opcode)); 100 101 return (&acpi_gbl_aml_op_info[_UNK]); 102 } 103 104 /******************************************************************************* 105 * 106 * FUNCTION: acpi_ps_get_opcode_name 107 * 108 * PARAMETERS: opcode - The AML opcode 109 * 110 * RETURN: A pointer to the name of the opcode (ASCII String) 111 * Note: Never returns NULL. 112 * 113 * DESCRIPTION: Translate an opcode into a human-readable string 114 * 115 ******************************************************************************/ 116 117 char *acpi_ps_get_opcode_name(u16 opcode) 118 { 119 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT) 120 121 const struct acpi_opcode_info *op; 122 123 op = acpi_ps_get_opcode_info(opcode); 124 125 /* Always guaranteed to return a valid pointer */ 126 127 return (op->name); 128 129 #else 130 return ("OpcodeName unavailable"); 131 132 #endif 133 } 134 135 /******************************************************************************* 136 * 137 * FUNCTION: acpi_ps_get_argument_count 138 * 139 * PARAMETERS: op_type - Type associated with the AML opcode 140 * 141 * RETURN: Argument count 142 * 143 * DESCRIPTION: Obtain the number of expected arguments for an AML opcode 144 * 145 ******************************************************************************/ 146 147 u8 acpi_ps_get_argument_count(u32 op_type) 148 { 149 150 if (op_type <= AML_TYPE_EXEC_6A_0T_1R) { 151 return (acpi_gbl_argument_count[op_type]); 152 } 153 154 return (0); 155 } 156 157 /* 158 * This table is directly indexed by the opcodes It returns 159 * an index into the opcode table (acpi_gbl_aml_op_info) 160 */ 161 const u8 acpi_gbl_short_op_index[256] = { 162 /* 0 1 2 3 4 5 6 7 */ 163 /* 8 9 A B C D E F */ 164 /* 0x00 */ 0x00, 0x01, _UNK, _UNK, _UNK, _UNK, 0x02, _UNK, 165 /* 0x08 */ 0x03, _UNK, 0x04, 0x05, 0x06, 0x07, 0x6E, _UNK, 166 /* 0x10 */ 0x08, 0x09, 0x0a, 0x6F, 0x0b, _UNK, _UNK, _UNK, 167 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 168 /* 0x20 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 169 /* 0x28 */ _UNK, _UNK, _UNK, _UNK, _UNK, 0x63, _PFX, _PFX, 170 /* 0x30 */ 0x67, 0x66, 0x68, 0x65, 0x69, 0x64, 0x6A, 0x7D, 171 /* 0x38 */ 0x7F, 0x80, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 172 /* 0x40 */ _UNK, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, 173 /* 0x48 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, 174 /* 0x50 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, 175 /* 0x58 */ _ASC, _ASC, _ASC, _UNK, _PFX, _UNK, _PFX, _ASC, 176 /* 0x60 */ 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 177 /* 0x68 */ 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, _UNK, 178 /* 0x70 */ 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 179 /* 0x78 */ 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 180 /* 0x80 */ 0x2b, 0x2c, 0x2d, 0x2e, 0x70, 0x71, 0x2f, 0x30, 181 /* 0x88 */ 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x72, 182 /* 0x90 */ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x73, 0x74, 183 /* 0x98 */ 0x75, 0x76, _UNK, _UNK, 0x77, 0x78, 0x79, 0x7A, 184 /* 0xA0 */ 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x60, 0x61, 185 /* 0xA8 */ 0x62, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 186 /* 0xB0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 187 /* 0xB8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 188 /* 0xC0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 189 /* 0xC8 */ _UNK, _UNK, _UNK, _UNK, 0x44, _UNK, _UNK, _UNK, 190 /* 0xD0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 191 /* 0xD8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 192 /* 0xE0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 193 /* 0xE8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 194 /* 0xF0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 195 /* 0xF8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x45, 196 }; 197 198 /* 199 * This table is indexed by the second opcode of the extended opcode 200 * pair. It returns an index into the opcode table (acpi_gbl_aml_op_info) 201 */ 202 const u8 acpi_gbl_long_op_index[NUM_EXTENDED_OPCODE] = { 203 /* 0 1 2 3 4 5 6 7 */ 204 /* 8 9 A B C D E F */ 205 /* 0x00 */ _UNK, 0x46, 0x47, _UNK, _UNK, _UNK, _UNK, _UNK, 206 /* 0x08 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 207 /* 0x10 */ _UNK, _UNK, 0x48, 0x49, _UNK, _UNK, _UNK, _UNK, 208 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x7B, 209 /* 0x20 */ 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 210 /* 0x28 */ 0x52, 0x53, 0x54, _UNK, _UNK, _UNK, _UNK, _UNK, 211 /* 0x30 */ 0x55, 0x56, 0x57, 0x7e, _UNK, _UNK, _UNK, _UNK, 212 /* 0x38 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 213 /* 0x40 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 214 /* 0x48 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 215 /* 0x50 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 216 /* 0x58 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 217 /* 0x60 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 218 /* 0x68 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 219 /* 0x70 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 220 /* 0x78 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 221 /* 0x80 */ 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 222 /* 0x88 */ 0x7C, 223 }; 224