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Diffstat (limited to 'sys/contrib/dev/acpica/components/disassembler/dmdeferred.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/disassembler/dmdeferred.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/disassembler/dmdeferred.c b/sys/contrib/dev/acpica/components/disassembler/dmdeferred.c new file mode 100644 index 0000000..1e8c224 --- /dev/null +++ b/sys/contrib/dev/acpica/components/disassembler/dmdeferred.c @@ -0,0 +1,272 @@ +/****************************************************************************** + * + * Module Name: dmdeferred - Disassembly of deferred AML opcodes + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/acdispat.h> +#include <contrib/dev/acpica/include/amlcode.h> +#include <contrib/dev/acpica/include/acdisasm.h> +#include <contrib/dev/acpica/include/acparser.h> + +#define _COMPONENT ACPI_CA_DISASSEMBLER + ACPI_MODULE_NAME ("dmdeferred") + + +/* Local prototypes */ + +static ACPI_STATUS +AcpiDmDeferredParse ( + ACPI_PARSE_OBJECT *Op, + UINT8 *Aml, + UINT32 AmlLength); + + +/****************************************************************************** + * + * FUNCTION: AcpiDmParseDeferredOps + * + * PARAMETERS: Root - Root of the parse tree + * + * RETURN: Status + * + * DESCRIPTION: Parse the deferred opcodes (Methods, regions, etc.) + * + *****************************************************************************/ + +ACPI_STATUS +AcpiDmParseDeferredOps ( + ACPI_PARSE_OBJECT *Root) +{ + const ACPI_OPCODE_INFO *OpInfo; + ACPI_PARSE_OBJECT *Op = Root; + ACPI_STATUS Status; + + + ACPI_FUNCTION_NAME (DmParseDeferredOps); + + + /* Traverse the entire parse tree */ + + while (Op) + { + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + if (!(OpInfo->Flags & AML_DEFER)) + { + Op = AcpiPsGetDepthNext (Root, Op); + continue; + } + + /* Now we know we have a deferred opcode */ + + switch (Op->Common.AmlOpcode) + { + case AML_METHOD_OP: + case AML_BUFFER_OP: + case AML_PACKAGE_OP: + case AML_VAR_PACKAGE_OP: + + Status = AcpiDmDeferredParse (Op, Op->Named.Data, Op->Named.Length); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + break; + + /* We don't need to do anything for these deferred opcodes */ + + case AML_REGION_OP: + case AML_DATA_REGION_OP: + case AML_CREATE_QWORD_FIELD_OP: + case AML_CREATE_DWORD_FIELD_OP: + case AML_CREATE_WORD_FIELD_OP: + case AML_CREATE_BYTE_FIELD_OP: + case AML_CREATE_BIT_FIELD_OP: + case AML_CREATE_FIELD_OP: + case AML_BANK_FIELD_OP: + + break; + + default: + ACPI_ERROR ((AE_INFO, "Unhandled deferred AML opcode [0x%.4X]", + Op->Common.AmlOpcode)); + break; + } + + Op = AcpiPsGetDepthNext (Root, Op); + } + + return (AE_OK); +} + + +/****************************************************************************** + * + * FUNCTION: AcpiDmDeferredParse + * + * PARAMETERS: Op - Root Op of the deferred opcode + * Aml - Pointer to the raw AML + * AmlLength - Length of the AML + * + * RETURN: Status + * + * DESCRIPTION: Parse one deferred opcode + * (Methods, operation regions, etc.) + * + *****************************************************************************/ + +static ACPI_STATUS +AcpiDmDeferredParse ( + ACPI_PARSE_OBJECT *Op, + UINT8 *Aml, + UINT32 AmlLength) +{ + ACPI_WALK_STATE *WalkState; + ACPI_STATUS Status; + ACPI_PARSE_OBJECT *SearchOp; + ACPI_PARSE_OBJECT *StartOp; + UINT32 BaseAmlOffset; + ACPI_PARSE_OBJECT *NewRootOp; + ACPI_PARSE_OBJECT *ExtraOp; + + + ACPI_FUNCTION_TRACE (DmDeferredParse); + + + if (!Aml || !AmlLength) + { + return_ACPI_STATUS (AE_OK); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Parsing deferred opcode %s [%4.4s]\n", + Op->Common.AmlOpName, (char *) &Op->Named.Name)); + + /* Need a new walk state to parse the AML */ + + WalkState = AcpiDsCreateWalkState (0, Op, NULL, NULL); + if (!WalkState) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, Aml, + AmlLength, NULL, ACPI_IMODE_LOAD_PASS1); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Parse the AML for this deferred opcode */ + + WalkState->ParseFlags &= ~ACPI_PARSE_DELETE_TREE; + WalkState->ParseFlags |= ACPI_PARSE_DISASSEMBLE; + Status = AcpiPsParseAml (WalkState); + + /* + * We need to update all of the AML offsets, since the parser thought + * that the method began at offset zero. In reality, it began somewhere + * within the ACPI table, at the BaseAmlOffset. Walk the entire tree that + * was just created and update the AmlOffset in each Op. + */ + BaseAmlOffset = (Op->Common.Value.Arg)->Common.AmlOffset + 1; + StartOp = (Op->Common.Value.Arg)->Common.Next; + SearchOp = StartOp; + + while (SearchOp) + { + SearchOp->Common.AmlOffset += BaseAmlOffset; + SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp); + } + + /* + * For Buffer and Package opcodes, link the newly parsed subtree + * into the main parse tree + */ + switch (Op->Common.AmlOpcode) + { + case AML_BUFFER_OP: + case AML_PACKAGE_OP: + case AML_VAR_PACKAGE_OP: + + switch (Op->Common.AmlOpcode) + { + case AML_PACKAGE_OP: + + ExtraOp = Op->Common.Value.Arg; + NewRootOp = ExtraOp->Common.Next; + ACPI_FREE (ExtraOp); + break; + + case AML_VAR_PACKAGE_OP: + case AML_BUFFER_OP: + default: + + NewRootOp = Op->Common.Value.Arg; + break; + } + + Op->Common.Value.Arg = NewRootOp->Common.Value.Arg; + + /* Must point all parents to the main tree */ + + StartOp = Op; + SearchOp = StartOp; + while (SearchOp) + { + if (SearchOp->Common.Parent == NewRootOp) + { + SearchOp->Common.Parent = Op; + } + + SearchOp = AcpiPsGetDepthNext (StartOp, SearchOp); + } + + ACPI_FREE (NewRootOp); + break; + + default: + break; + } + + return_ACPI_STATUS (AE_OK); +} |
