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482 lines
12 KiB
482 lines
12 KiB
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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genxx.h
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Abstract:
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This file contains macros (some of them destined for the M4 preprocessor)
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to aid in the generation of ks & hal header files. This is used by
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ke\xxx\genxxx.c, as well as sdktools\genxx.
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Author:
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Forrest C. Foltz (forrestf) 23-Jan-1998
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Revision History:
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--*/
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//
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// Structure element definitions.
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//
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#define MAX_ELEMENT_NAME_LEN 127 // big enough for comments too
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typedef struct _STRUC_ELEMENT {
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//
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// Flags is one or more SEF_xxx, defined below.
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//
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UINT64 Flags;
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//
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// Note that Equate is used to store a pointer in the case of bitfield
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// processing.
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//
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UINT64 Equate;
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//
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// Name should be quite long, as it is used to hold comments as well.
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//
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CHAR Name[ MAX_ELEMENT_NAME_LEN + 1 ];
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} STRUC_ELEMENT, *PSTRUC_ELEMENT;
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#define SEF_ENABLE_MASK 0x0000FF00
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#define SEF_HAL 0x00000100
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#define SEF_KERNEL 0x00000200
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#define SEF_INC_FORMAT_MASK 0x00010000
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#define SEF_H_FORMAT 0x00000000
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#define SEF_INC_FORMAT 0x00010000
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//
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// Types. Note that SETMASK, CLRMASK has no effect on te BITFLD types. BITFLD
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// types have SEF_HAL | SEF_KERNEL set in the type.
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//
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#define SEF_TYPE_MASK 0x000000FF
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#define SEF_EQUATE 0x00000000
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#define SEF_EQUATE64 0x00000001
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#define SEF_COMMENT 0x00000002
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#define SEF_STRING 0x00000003 // Equate is vararg to printf
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#define SEF_BITFLD 0x00000004
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#define SEF_BITALIAS 0x00000005
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#define SEF_STRUCTURE 0x00000006
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#define SEF_SETMASK 0x00000010 // Equate is the mask
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#define SEF_CLRMASK 0x00000011 // Equate is the mask
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#define SEF_END 0x00000012
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#define SEF_START 0x00000013
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#define SEF_PATH 0x00000014
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//
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// Note that BITFLD entries have per-entry hal|kernel flags
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//
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//
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// Define architecture specific generation macros.
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//
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#define SEF_FLAGS 0
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#define HAL SEF_HAL
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#define KERNEL SEF_KERNEL
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#ifndef ULONG_MAX
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#define ULONG_MAX 0xFFFFFFFF
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#endif
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#ifndef LONG_MAX
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#define LONG_MAX ((LONG)0x7FFFFFFF)
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#endif
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#ifndef LONG_MIN
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#define LONG_MIN ((LONG)0x80000000)
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#endif
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#ifdef _WIN64_
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#define SEF_UINT SEF_EQUATE64
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#else
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#define SEF_UINT SEF_EQUATE
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#endif
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//
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// genDef(Pc, KPCR, MinorVersion)
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//
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// -> #define PcMinorVersion 0x0
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//
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#define genDef(Prefix, Type, Member) \
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{ SEF_EQUATE, OFFSET(Type, Member), #Prefix #Member },
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//
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// genOff(Pc, KPCR, MinorVersion, 128)
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//
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// -> #define PcMinorVersion 0xffffff80
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//
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#define genOff(Prefix, Type, Member, Offset) \
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{ SEF_EQUATE, OFFSET(Type, Member) - Offset, #Prefix #Member },
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//
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// genAlt( PbAlignmentFixupCount, KPRCB, KeAlignmentFixupCount )
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//
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// -> #define PbAlignmentFixupCount 0x2f4
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//
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#define genAlt(Name, Type, Member) \
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{ SEF_EQUATE, OFFSET(Type, Member), #Name },
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//
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// genCom("This is a comment")
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//
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// //
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// -> // This is a comment
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// //
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//
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#define genCom(Comment) \
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{ SEF_COMMENT, 0, Comment },
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//
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// genNam(PCR_MINOR_VERSION)
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//
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// -> #define PCR_MINOR_VERSION 0x1
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//
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#define genNam(Name) \
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{ SEF_EQUATE, (ULONG)(Name), #Name },
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//
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// genNamUint(KSEG0_BASE)
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//
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// -> #define KSE0_BASE 0xffffffff80000000
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//
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#define genNamUint(Name) \
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{ SEF_UINT, (UINT64)(Name), #Name },
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//
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// genVal(FirmwareFrameLength, FIRMWARE_FRAME_LENGTH)
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//
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// -> #define FirmwareFrameLength 0x250
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//
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// Note: if the value is 64-bit when _WIN64_ is enabled, use genValUint()
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//
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#define genVal(Name, Value) \
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{ SEF_EQUATE, (ULONG)(Value), #Name },
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//
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// genValUint(KiPcr, KIPCR)
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//
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// -> #define KiPcr 0xe0000000ffffe000
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//
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#define genValUint(Name, Value) \
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{ SEF_UINT, (UINT64)(Value), #Name },
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//
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// genSpc()
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//
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// ->
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//
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#define genSpc() \
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{ SEF_STRING, 0, "\n" },
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//
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// genStr(" PCR equ ds:[0%lXH]\n", KIP0PCRADDRESS)
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//
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// -> PCR equ ds:[0FFDFF000H]
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//
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#define genStr(String, Value) \
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{ SEF_STRING, (ULONG_PTR)(Value), String },
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//
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// genTxt("ifdef NT_UP\n")
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//
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// -> ifdef NT_UP
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//
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#define genTxt(String) \
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{ SEF_STRING, 0, String },
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#define DisableInc( x ) \
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{ SEF_CLRMASK, x, "" },
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#define EnableInc( x ) \
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{ SEF_SETMASK, x, "" },
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#define MARKER_STRING "This is the genxx marker string."
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//
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// Source file can specify the _NTDRIVE\_NTROOT - relative output path.
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// 'f' is the set of enable-flags that should be routed to this file.
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// Use '0' if there is only a single output file.
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//
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// 'f' should also contain one of SEF_H_FORMAT or SEF_INC_FORMAT to
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// indicate whether the generated file is in 'header file' or 'include file'
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// format.
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//
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#define setPath( p, f ) \
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{ SEF_PATH | f, 0, p },
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//
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// START_LIST defines the first element in ElementList. This element contains
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// a (possibly truncated) pointer to the ElementList array. This is used to
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// determine the fixup RA bias.
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//
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#define START_LIST \
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{ SEF_START, (ULONG_PTR)ElementList, MARKER_STRING },
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#define END_LIST \
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{ SEF_END, 0, "" }
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//
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// Preprocessor assertion. Do something here to make the compiler generate
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// an error if x != y.
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//
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#define ASSERT_SAME( x, y )
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//
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// Macro to round Val up to the next Bnd boundary. Bnd must be an integral
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// power of two.
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//
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#define ROUND_UP( Val, Bnd ) \
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(((Val) + ((Bnd) - 1)) & ~((Bnd) - 1))
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#ifndef OFFSET
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//
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// Define member offset computation macro.
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//
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#define OFFSET(type, field) ((ULONG_PTR)(&((type *)0)->field))
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#endif
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//
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// Following are some M4 macros to help with bitfields.
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//
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#ifndef SKIP_M4
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//
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// First, define the makezeros(n) macro that will generate a string with
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// n pairs of ',0'. This is a recursively defined macro.
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//
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define(`makezeros',`ifelse(eval($1),0,,`0,makezeros(eval($1-1))')')
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//
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// Define a concatenation macro.
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//
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define(`cat',`$1$2')
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//
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// The following example bitfield declaration uses HARDWARE_PTE as an
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// example, which is declared (for alpha) as follows:
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//
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// typedef struct _HARDWARE_PTE {
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// ULONG Valid: 1;
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// ULONG Owner: 1;
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// ULONG Dirty: 1;
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// ULONG reserved: 1;
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// ULONG Global: 1;
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// ULONG GranularityHint: 2;
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// ULONG Write: 1;
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// ULONG CopyOnWrite: 1;
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// ULONG PageFrameNumber: 23;
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// } HARDWARE_PTE, *PHARDWARE_PTE;
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//
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//
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// // First, startBitStruc() is invoked with the structure name.
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//
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// startBitStruc( HARDWARE_PTE, SEF_HAL | SEF_KERNEL )
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//
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// //
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// // Now, suppose we wanted to expose seven of the fields in an assembly
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// // include file:
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// //
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//
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// genBitField( Valid, PTE_VALID )
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// genBitField( Owner, PTE_OWNER )
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// genBitField( Dirty, PTE_DIRTY )
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// genBitField( reserved )
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// genBitField( Global, PTE_GLOBAL )
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// genBitField( GranularityHint )
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// genBitField( Write, PTE_WRITE )
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// genBitField( CopyOnWrite, PTE_COPYONWRITE )
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// genBitField( PageFrameNumber, PTE_PFN )
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//
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// Note that fields that are not used (in this case 'reserved' and
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// 'GranularityHint') must still appear in the list.
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//
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// The above will generate a bunch of static, initialized copies of HARDWARE_PTE
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// like so:
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//
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// HARDWARE_PTE HARDWARE_PTE_Valid = {
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_Owner = {
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// 0, // Valid
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_Dirty = {
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// 0, // Valid
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// 0, // Owner
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_Global = {
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// 0, // Valid
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// 0, // Owner
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// 0, // Dirty
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// 0, // reserved
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_Write = {
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// 0, // Valid
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// 0, // Owner
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// 0, // Dirty
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// 0, // reserved (skipped)
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// 0, // Global
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_CopyOnWrite = {
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// 0, // Valid
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// 0, // Owner
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// 0, // Dirty
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// 0, // reserved (skipped)
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// 0, // Global
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// 0, // GranularityHint (skipped)
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// 0xFFFFFFFF };
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//
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// HARDWARE_PTE HARDWARE_PTE_PageFrameNumber = {
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// 0, // Valid
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// 0, // Owner
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// 0, // Dirty
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// 0, // reserved (skipped)
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// 0, // Global
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// 0, // GranularityHint (skipped)
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// 0, // CopyOnWrite
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// 0xFFFFFFFF };
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//
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// Then, as part of processing the END_LIST macro, these structures are
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// generated:
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//
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// { SEF_BITFLD, &HARDWARE_PTE_Valid, "PTE_VALID" },
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// { SEF_BITFLD, &HARDWARE_PTE_Owner, "PTE_OWNER" },
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// { SEF_BITFLD, &HARDWARE_PTE_Dirty, "PTE_DIRTY" },
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// { SEF_BITFLD, &HARDWARE_PTE_Global, "PTE_GLOBAL" },
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// { SEF_BITFLD, &HARDWARE_PTE_Write, "PTE_WRITE" },
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// { SEF_BITFLD, &HARDWARE_PTE_CopyOnWrite, "PTE_COPYONWRITE" },
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// { SEF_BITFLD, &HARDWARE_PTE_PageFrameNumber, "PTE_PFN" },
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// { SEF_END, 0, "" }
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//
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//
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// ... and that's what gets compiled by the target compiler into the .obj.
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// Now, the final stage: genxx.exe is run against this target .obj, and
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// would generate the following:
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//
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// #define PTE_VALID_MASK 0x1
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// #define PTE_VALID 0x0
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// #define PTE_OWNER_MASK 0x2
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// #define PTE_OWNER 0x1
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// #define PTE_DIRTY_MASK 0x4
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// #define PTE_DIRTY 0x2
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// #define PTE_GLOBAL_MASK 0x10
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// #define PTE_GLOBAL 0x4
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// #define PTE_WRITE_MASK 0x80
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// #define PTE_WRITE 0x7
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// #define PTE_COPYONWRITE_MASK 0x100
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// #define PTE_COPYONWRITE 0x8
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// #define PTE_PFN_MASK 0xfffffe00
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// #define PTE_PFN 0x9
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//
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//
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// BITFIELD_STRUCS accumulates array element initializations. END_LIST will
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// dump these into the definition array.
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//
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define(`BITFIELD_STRUCS',`')
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//
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// startBitStruc( <strucname>, <whichfile> )
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// sets BIT_STRUC_NAME = <strucname> and resets the ZERO_FIELDS count to 0.
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// It also sets the WHICH_FILE macro.
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//
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define(`startBitStruc', `define(`BIT_STRUC_NAME',`$1')
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define(`BITFIELD_STRUCS',
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BITFIELD_STRUCS
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)
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define(`ZERO_FIELDS',0)
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define(`SEF_TYPE',$2)
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')
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//
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// genBitField( <fldname>, <generatedname> ) declares a structure of type
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// <strucname> and initializes the <fldname> bitfield within it.
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//
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// Note that I used "cma" instead of an actual comma, this gets changed to
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// a comma by DUMP_BITFIELDS, below. If I were more proficient with M4 I
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// would know how to get around this.
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//
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define(`genBitField', `define(`VAR_NAME', cat(cat(BIT_STRUC_NAME,`_'),$1))
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`#'define `def_'VAR_NAME
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BIT_STRUC_NAME VAR_NAME = {'
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`makezeros(ZERO_FIELDS)'
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`(ULONG_PTR)-1 };'
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`define(`PAD_VAR_NAME', cat(cat(BIT_STRUC_NAME,`p'),$1))'
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`ULONG64 PAD_VAR_NAME = 0x8000000000000000UI64;'
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`define(`ZERO_FIELDS',incr(ZERO_FIELDS))'
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`define(`FIELD_NAME', $1)'
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`define(`FIELD_ASMNAME', $2)'
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`define(`BITFIELD_STRUCS',
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BITFIELD_STRUCS
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`#i'fdef `def_'VAR_NAME
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`#i'fndef `dec_'VAR_NAME
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`#de'fine `dec_'VAR_NAME
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{ SEF_BITFLD | SEF_TYPE cma (ULONG_PTR)&VAR_NAME cma "FIELD_ASMNAME" } cma
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`#e'ndif
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`#e'ndif
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)'
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)
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define(`genBitAlias', `define(`BITFIELD_STRUCS',
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BITFIELD_STRUCS
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`#i'fdef `def_'VAR_NAME
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`#i'fndef `deca_'VAR_NAME
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`#de'fine `deca_'VAR_NAME
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{ SEF_BITALIAS | SEF_TYPE cma 0 cma "$1" } cma
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`#e'ndif
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`#e'ndif
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)'
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)
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//
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// DUMP_BITFIELDS dumps the array initializers accumulated by BITFIELD_STRUCS,
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// after replacing each 'cma' with an actual comma.
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//
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define(`DUMP_BITFIELDS',`define(`cma',`,') BITFIELD_STRUCS')
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#endif // SKIP_M4
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