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145 halyavin 1
/* Table of DBX symbol codes for the GNU system.
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   Copyright (C) 1988, 1997 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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5
   The GNU C Library is free software; you can redistribute it and/or
6
   modify it under the terms of the GNU Library General Public License as
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   published by the Free Software Foundation; either version 2 of the
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   License, or (at your option) any later version.
9
 
10
   The GNU C Library is distributed in the hope that it will be useful,
11
   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Library General Public License for more details.
14
 
15
   You should have received a copy of the GNU Library General Public
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   License along with the GNU C Library; see the file COPYING.LIB.  If not,
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   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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/* This contains contribution from Cygnus Support.  */
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/* Global variable.  Only the name is significant.
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   To find the address, look in the corresponding external symbol.  */
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__define_stab (N_GSYM, 0x20, "GSYM")
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/* Function name for BSD Fortran.  Only the name is significant.
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   To find the address, look in the corresponding external symbol.  */
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__define_stab (N_FNAME, 0x22, "FNAME")
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/* Function name or text-segment variable for C.  Value is its address.
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   Desc is supposedly starting line number, but GCC doesn't set it
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   and DBX seems not to miss it.  */
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__define_stab (N_FUN, 0x24, "FUN")
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/* Data-segment variable with internal linkage.  Value is its address.
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   "Static Sym".  */
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__define_stab (N_STSYM, 0x26, "STSYM")
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/* BSS-segment variable with internal linkage.  Value is its address.  */
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__define_stab (N_LCSYM, 0x28, "LCSYM")
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/* Name of main routine.  Only the name is significant.
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   This is not used in C.  */
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__define_stab (N_MAIN, 0x2a, "MAIN")
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46
/* Global symbol in Pascal.
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   Supposedly the value is its line number; I'm skeptical.  */
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__define_stab (N_PC, 0x30, "PC")
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/* Number of symbols:  0, files,,funcs,lines according to Ultrix V4.0. */
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__define_stab (N_NSYMS, 0x32, "NSYMS")
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/* "No DST map for sym: name, ,0,type,ignored"  according to Ultrix V4.0. */
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__define_stab (N_NOMAP, 0x34, "NOMAP")
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/* New stab from Solaris.  I don't know what it means, but it
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   don't seem to contain useful information.  */
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__define_stab (N_OBJ, 0x38, "OBJ")
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/* New stab from Solaris.  I don't know what it means, but it
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   don't seem to contain useful information.  Possibly related to the
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   optimization flags used in this module.  */
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__define_stab (N_OPT, 0x3c, "OPT")
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/* Register variable.  Value is number of register.  */
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__define_stab (N_RSYM, 0x40, "RSYM")
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/* Modula-2 compilation unit.  Can someone say what info it contains?  */
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__define_stab (N_M2C, 0x42, "M2C")
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/* Line number in text segment.  Desc is the line number;
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   value is corresponding address.  */
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__define_stab (N_SLINE, 0x44, "SLINE")
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/* Similar, for data segment.  */
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__define_stab (N_DSLINE, 0x46, "DSLINE")
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/* Similar, for bss segment.  */
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__define_stab (N_BSLINE, 0x48, "BSLINE")
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/* Sun's source-code browser stabs.  ?? Don't know what the fields are.
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   Supposedly the field is "path to associated .cb file".  THIS VALUE
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   OVERLAPS WITH N_BSLINE!  */
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__define_stab (N_BROWS, 0x48, "BROWS")
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/* GNU Modula-2 definition module dependency.  Value is the modification time
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   of the definition file.  Other is non-zero if it is imported with the
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   GNU M2 keyword %INITIALIZE.  Perhaps N_M2C can be used if there
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   are enough empty fields? */
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__define_stab(N_DEFD, 0x4a, "DEFD")
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/* THE FOLLOWING TWO STAB VALUES CONFLICT.  Happily, one is for Modula-2
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   and one is for C++.   Still,... */
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/* GNU C++ exception variable.  Name is variable name.  */
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__define_stab (N_EHDECL, 0x50, "EHDECL")
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/* Modula2 info "for imc":  name,,0,0,0  according to Ultrix V4.0.  */
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__define_stab (N_MOD2, 0x50, "MOD2")
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/* GNU C++ `catch' clause.  Value is its address.  Desc is nonzero if
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   this entry is immediately followed by a CAUGHT stab saying what exception
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   was caught.  Multiple CAUGHT stabs means that multiple exceptions
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   can be caught here.  If Desc is 0, it means all exceptions are caught
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   here.  */
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__define_stab (N_CATCH, 0x54, "CATCH")
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/* Structure or union element.  Value is offset in the structure.  */
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__define_stab (N_SSYM, 0x60, "SSYM")
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109
/* Name of main source file.
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   Value is starting text address of the compilation.  */
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__define_stab (N_SO, 0x64, "SO")
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/* Automatic variable in the stack.  Value is offset from frame pointer.
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   Also used for type descriptions.  */
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__define_stab (N_LSYM, 0x80, "LSYM")
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/* Beginning of an include file.  Only Sun uses this.
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   In an object file, only the name is significant.
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   The Sun linker puts data into some of the other fields.  */
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__define_stab (N_BINCL, 0x82, "BINCL")
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/* Name of sub-source file (#include file).
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   Value is starting text address of the compilation.  */
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__define_stab (N_SOL, 0x84, "SOL")
125
 
126
/* Parameter variable.  Value is offset from argument pointer.
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   (On most machines the argument pointer is the same as the frame pointer.  */
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__define_stab (N_PSYM, 0xa0, "PSYM")
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/* End of an include file.  No name.
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   This and N_BINCL act as brackets around the file's output.
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   In an object file, there is no significant data in this entry.
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   The Sun linker puts data into some of the fields.  */
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__define_stab (N_EINCL, 0xa2, "EINCL")
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136
/* Alternate entry point.  Value is its address.  */
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__define_stab (N_ENTRY, 0xa4, "ENTRY")
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/* Beginning of lexical block.
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   The desc is the nesting level in lexical blocks.
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   The value is the address of the start of the text for the block.
142
   The variables declared inside the block *precede* the N_LBRAC symbol.  */
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__define_stab (N_LBRAC, 0xc0, "LBRAC")
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/* Place holder for deleted include file.  Replaces a N_BINCL and everything
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   up to the corresponding N_EINCL.  The Sun linker generates these when
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   it finds multiple identical copies of the symbols from an include file.
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   This appears only in output from the Sun linker.  */
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__define_stab (N_EXCL, 0xc2, "EXCL")
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151
/* Modula-2 scope information.  Can someone say what info it contains?  */
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__define_stab (N_SCOPE, 0xc4, "SCOPE")
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/* End of a lexical block.  Desc matches the N_LBRAC's desc.
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   The value is the address of the end of the text for the block.  */
156
__define_stab (N_RBRAC, 0xe0, "RBRAC")
157
 
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/* Begin named common block.  Only the name is significant.  */
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__define_stab (N_BCOMM, 0xe2, "BCOMM")
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/* End named common block.  Only the name is significant
162
   (and it should match the N_BCOMM).  */
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__define_stab (N_ECOMM, 0xe4, "ECOMM")
164
 
165
/* End common (local name): value is address.
166
   I'm not sure how this is used.  */
167
__define_stab (N_ECOML, 0xe8, "ECOML")
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169
/* These STAB's are used on Gould systems for Non-Base register symbols
170
   or something like that.  FIXME.  I have assigned the values at random
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   since I don't have a Gould here.  Fixups from Gould folk welcome... */
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__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
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__define_stab (N_NBDATA, 0xF2, "NBDATA")
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__define_stab (N_NBBSS,  0xF4, "NBBSS")
175
__define_stab (N_NBSTS,  0xF6, "NBSTS")
176
__define_stab (N_NBLCS,  0xF8, "NBLCS")
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178
/* Second symbol entry containing a length-value for the preceding entry.
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   The value is the length.  */
180
__define_stab (N_LENG, 0xfe, "LENG")
6429 siemargl 181
 
145 halyavin 182
/* The above information, in matrix format.
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184
			STAB MATRIX
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	_________________________________________________
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	| 00 - 1F are not dbx stab symbols		|
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	| In most cases, the low bit is the EXTernal bit|
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	| 00 UNDEF  | 02 ABS	| 04 TEXT   | 06 DATA	|
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	| 01  |EXT  | 03  |EXT	| 05  |EXT  | 07  |EXT	|
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	| 08 BSS    | 0A INDR	| 0C FN_SEQ | 0E   	|
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	| 09  |EXT  | 0B 	| 0D	    | 0F	|
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195
	| 10 	    | 12 COMM	| 14 SETA   | 16 SETT	|
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	| 11	    | 13	| 15 	    | 17	|
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	| 18 SETD   | 1A SETB	| 1C SETV   | 1E WARNING|
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	| 19	    | 1B	| 1D 	    | 1F FN	|
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201
	|_______________________________________________|
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	| Debug entries with bit 01 set are unused.	|
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	| 20 GSYM   | 22 FNAME	| 24 FUN    | 26 STSYM	|
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	| 28 LCSYM  | 2A MAIN	| 2C	    | 2E	|
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	| 30 PC	    | 32 NSYMS	| 34 NOMAP  | 36	|
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	| 38 OBJ    | 3A	| 3C OPT    | 3E	|
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	| 40 RSYM   | 42 M2C	| 44 SLINE  | 46 DSLINE |
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	| 48 BSLINE*| 4A DEFD	| 4C        | 4E	|
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	| 50 EHDECL*| 52	| 54 CATCH  | 56        |
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	| 58        | 5A        | 5C        | 5E	|
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	| 60 SSYM   | 62	| 64 SO	    | 66 	|
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	| 68 	    | 6A	| 6C	    | 6E	|
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	| 70	    | 72	| 74	    | 76	|
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	| 78	    | 7A	| 7C	    | 7E	|
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	| 80 LSYM   | 82 BINCL	| 84 SOL    | 86	|
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	| 88	    | 8A	| 8C	    | 8E	|
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	| 90	    | 92	| 94	    | 96	|
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	| 98	    | 9A	| 9C	    | 9E	|
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	| A0 PSYM   | A2 EINCL	| A4 ENTRY  | A6	|
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	| A8	    | AA	| AC	    | AE	|
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	| B0	    | B2	| B4	    | B6	|
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	| B8	    | BA	| BC	    | BE	|
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	| C0 LBRAC  | C2 EXCL	| C4 SCOPE  | C6	|
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	| C8	    | CA	| CC	    | CE	|
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	| D0	    | D2	| D4	    | D6	|
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	| D8	    | DA	| DC	    | DE	|
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	| E0 RBRAC  | E2 BCOMM	| E4 ECOMM  | E6	|
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	| E8 ECOML  | EA	| EC	    | EE	|
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	| F0	    | F2	| F4	    | F6	|
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	| F8	    | FA	| FC	    | FE LENG	|
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	+-----------------------------------------------+
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 * 50 EHDECL is also MOD2.
233
 * 48 BSLINE is also BROWS.
234
 */