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Diffstat (limited to 'usr/src/common/acpica/parser/psutils.c')
| -rw-r--r-- | usr/src/common/acpica/parser/psutils.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/usr/src/common/acpica/parser/psutils.c b/usr/src/common/acpica/parser/psutils.c new file mode 100644 index 0000000000..9b1019c711 --- /dev/null +++ b/usr/src/common/acpica/parser/psutils.c @@ -0,0 +1,281 @@ +/****************************************************************************** + * + * Module Name: psutils - Parser miscellaneous utilities (Parser only) + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2016, 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 "acpi.h" +#include "accommon.h" +#include "acparser.h" +#include "amlcode.h" + +#define _COMPONENT ACPI_PARSER + ACPI_MODULE_NAME ("psutils") + + +/******************************************************************************* + * + * FUNCTION: AcpiPsCreateScopeOp + * + * PARAMETERS: None + * + * RETURN: A new Scope object, null on failure + * + * DESCRIPTION: Create a Scope and associated namepath op with the root name + * + ******************************************************************************/ + +ACPI_PARSE_OBJECT * +AcpiPsCreateScopeOp ( + UINT8 *Aml) +{ + ACPI_PARSE_OBJECT *ScopeOp; + + + ScopeOp = AcpiPsAllocOp (AML_SCOPE_OP, Aml); + if (!ScopeOp) + { + return (NULL); + } + + ScopeOp->Named.Name = ACPI_ROOT_NAME; + return (ScopeOp); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsInitOp + * + * PARAMETERS: Op - A newly allocated Op object + * Opcode - Opcode to store in the Op + * + * RETURN: None + * + * DESCRIPTION: Initialize a parse (Op) object + * + ******************************************************************************/ + +void +AcpiPsInitOp ( + ACPI_PARSE_OBJECT *Op, + UINT16 Opcode) +{ + ACPI_FUNCTION_ENTRY (); + + + Op->Common.DescriptorType = ACPI_DESC_TYPE_PARSER; + Op->Common.AmlOpcode = Opcode; + + ACPI_DISASM_ONLY_MEMBERS (strncpy (Op->Common.AmlOpName, + (AcpiPsGetOpcodeInfo (Opcode))->Name, + sizeof (Op->Common.AmlOpName))); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsAllocOp + * + * PARAMETERS: Opcode - Opcode that will be stored in the new Op + * Aml - Address of the opcode + * + * RETURN: Pointer to the new Op, null on failure + * + * DESCRIPTION: Allocate an acpi_op, choose op type (and thus size) based on + * opcode. A cache of opcodes is available for the pure + * GENERIC_OP, since this is by far the most commonly used. + * + ******************************************************************************/ + +ACPI_PARSE_OBJECT* +AcpiPsAllocOp ( + UINT16 Opcode, + UINT8 *Aml) +{ + ACPI_PARSE_OBJECT *Op; + const ACPI_OPCODE_INFO *OpInfo; + UINT8 Flags = ACPI_PARSEOP_GENERIC; + + + ACPI_FUNCTION_ENTRY (); + + + OpInfo = AcpiPsGetOpcodeInfo (Opcode); + + /* Determine type of ParseOp required */ + + if (OpInfo->Flags & AML_DEFER) + { + Flags = ACPI_PARSEOP_DEFERRED; + } + else if (OpInfo->Flags & AML_NAMED) + { + Flags = ACPI_PARSEOP_NAMED_OBJECT; + } + else if (Opcode == AML_INT_BYTELIST_OP) + { + Flags = ACPI_PARSEOP_BYTELIST; + } + + /* Allocate the minimum required size object */ + + if (Flags == ACPI_PARSEOP_GENERIC) + { + /* The generic op (default) is by far the most common (16 to 1) */ + + Op = AcpiOsAcquireObject (AcpiGbl_PsNodeCache); + } + else + { + /* Extended parseop */ + + Op = AcpiOsAcquireObject (AcpiGbl_PsNodeExtCache); + } + + /* Initialize the Op */ + + if (Op) + { + AcpiPsInitOp (Op, Opcode); + Op->Common.Aml = Aml; + Op->Common.Flags = Flags; + } + + return (Op); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsFreeOp + * + * PARAMETERS: Op - Op to be freed + * + * RETURN: None. + * + * DESCRIPTION: Free an Op object. Either put it on the GENERIC_OP cache list + * or actually free it. + * + ******************************************************************************/ + +void +AcpiPsFreeOp ( + ACPI_PARSE_OBJECT *Op) +{ + ACPI_FUNCTION_NAME (PsFreeOp); + + + if (Op->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, + "Free retval op: %p\n", Op)); + } + + if (Op->Common.Flags & ACPI_PARSEOP_GENERIC) + { + (void) AcpiOsReleaseObject (AcpiGbl_PsNodeCache, Op); + } + else + { + (void) AcpiOsReleaseObject (AcpiGbl_PsNodeExtCache, Op); + } +} + + +/******************************************************************************* + * + * FUNCTION: Utility functions + * + * DESCRIPTION: Low level character and object functions + * + ******************************************************************************/ + + +/* + * Is "c" a namestring lead character? + */ +BOOLEAN +AcpiPsIsLeadingChar ( + UINT32 c) +{ + return ((BOOLEAN) (c == '_' || (c >= 'A' && c <= 'Z'))); +} + + +/* + * Get op's name (4-byte name segment) or 0 if unnamed + */ +UINT32 +AcpiPsGetName ( + ACPI_PARSE_OBJECT *Op) +{ + + /* The "generic" object has no name associated with it */ + + if (Op->Common.Flags & ACPI_PARSEOP_GENERIC) + { + return (0); + } + + /* Only the "Extended" parse objects have a name */ + + return (Op->Named.Name); +} + + +/* + * Set op's name + */ +void +AcpiPsSetName ( + ACPI_PARSE_OBJECT *Op, + UINT32 name) +{ + + /* The "generic" object has no name associated with it */ + + if (Op->Common.Flags & ACPI_PARSEOP_GENERIC) + { + return; + } + + Op->Named.Name = name; +} |