1 /******************************************************************************
3 * Module Name: dmdeferred - Disassembly of deferred AML opcodes
5 *****************************************************************************/
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45 #include <contrib/dev/acpica/include/acpi.h>
46 #include <contrib/dev/acpica/include/accommon.h>
47 #include <contrib/dev/acpica/include/acdispat.h>
48 #include <contrib/dev/acpica/include/amlcode.h>
49 #include <contrib/dev/acpica/include/acdisasm.h>
50 #include <contrib/dev/acpica/include/acparser.h>
52 #define _COMPONENT ACPI_CA_DISASSEMBLER
53 ACPI_MODULE_NAME ("dmdeferred")
56 /* Local prototypes */
60 ACPI_PARSE_OBJECT *Op,
65 /******************************************************************************
67 * FUNCTION: AcpiDmParseDeferredOps
69 * PARAMETERS: Root - Root of the parse tree
73 * DESCRIPTION: Parse the deferred opcodes (Methods, regions, etc.)
75 *****************************************************************************/
78 AcpiDmParseDeferredOps (
79 ACPI_PARSE_OBJECT *Root)
81 const ACPI_OPCODE_INFO *OpInfo;
82 ACPI_PARSE_OBJECT *Op = Root;
86 ACPI_FUNCTION_ENTRY ();
89 /* Traverse the entire parse tree */
93 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
94 if (!(OpInfo->Flags & AML_DEFER))
96 Op = AcpiPsGetDepthNext (Root, Op);
100 /* Now we know we have a deferred opcode */
102 switch (Op->Common.AmlOpcode)
107 case AML_VAR_PACKAGE_OP:
109 Status = AcpiDmDeferredParse (Op, Op->Named.Data, Op->Named.Length);
110 if (ACPI_FAILURE (Status))
116 /* We don't need to do anything for these deferred opcodes */
119 case AML_DATA_REGION_OP:
120 case AML_CREATE_QWORD_FIELD_OP:
121 case AML_CREATE_DWORD_FIELD_OP:
122 case AML_CREATE_WORD_FIELD_OP:
123 case AML_CREATE_BYTE_FIELD_OP:
124 case AML_CREATE_BIT_FIELD_OP:
125 case AML_CREATE_FIELD_OP:
126 case AML_BANK_FIELD_OP:
132 ACPI_ERROR ((AE_INFO, "Unhandled deferred AML opcode [0x%.4X]",
133 Op->Common.AmlOpcode));
137 Op = AcpiPsGetDepthNext (Root, Op);
144 /******************************************************************************
146 * FUNCTION: AcpiDmDeferredParse
148 * PARAMETERS: Op - Root Op of the deferred opcode
149 * Aml - Pointer to the raw AML
150 * AmlLength - Length of the AML
154 * DESCRIPTION: Parse one deferred opcode
155 * (Methods, operation regions, etc.)
157 *****************************************************************************/
160 AcpiDmDeferredParse (
161 ACPI_PARSE_OBJECT *Op,
165 ACPI_WALK_STATE *WalkState;
167 ACPI_PARSE_OBJECT *SearchOp;
168 ACPI_PARSE_OBJECT *StartOp;
169 UINT32 BaseAmlOffset;
170 ACPI_PARSE_OBJECT *NewRootOp;
171 ACPI_PARSE_OBJECT *ExtraOp;
174 ACPI_FUNCTION_TRACE (DmDeferredParse);
177 if (!Aml || !AmlLength)
179 return_ACPI_STATUS (AE_OK);
182 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Parsing deferred opcode %s [%4.4s]\n",
183 Op->Common.AmlOpName, (char *) &Op->Named.Name));
185 /* Need a new walk state to parse the AML */
187 WalkState = AcpiDsCreateWalkState (0, Op, NULL, NULL);
190 return_ACPI_STATUS (AE_NO_MEMORY);
193 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, Aml,
194 AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
195 if (ACPI_FAILURE (Status))
197 return_ACPI_STATUS (Status);
200 /* Parse the AML for this deferred opcode */
202 WalkState->ParseFlags &= ~ACPI_PARSE_DELETE_TREE;
203 WalkState->ParseFlags |= ACPI_PARSE_DISASSEMBLE;
204 Status = AcpiPsParseAml (WalkState);
207 * We need to update all of the AML offsets, since the parser thought
208 * that the method began at offset zero. In reality, it began somewhere
209 * within the ACPI table, at the BaseAmlOffset. Walk the entire tree that
210 * was just created and update the AmlOffset in each Op.
212 BaseAmlOffset = (Op->Common.Value.Arg)->Common.AmlOffset + 1;
213 StartOp = (Op->Common.Value.Arg)->Common.Next;
218 SearchOp->Common.AmlOffset += BaseAmlOffset;
219 SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp);
223 * For Buffer and Package opcodes, link the newly parsed subtree
224 * into the main parse tree
226 switch (Op->Common.AmlOpcode)
230 case AML_VAR_PACKAGE_OP:
232 switch (Op->Common.AmlOpcode)
236 ExtraOp = Op->Common.Value.Arg;
237 NewRootOp = ExtraOp->Common.Next;
241 case AML_VAR_PACKAGE_OP:
245 NewRootOp = Op->Common.Value.Arg;
249 Op->Common.Value.Arg = NewRootOp->Common.Value.Arg;
251 /* Must point all parents to the main tree */
257 if (SearchOp->Common.Parent == NewRootOp)
259 SearchOp->Common.Parent = Op;
262 SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp);
265 ACPI_FREE (NewRootOp);
273 return_ACPI_STATUS (AE_OK);