gcc/stab.def - gcc - Git at Google

 /* Table of DBX symbol codes for the GNU system.
    Copyright (C) 1988-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.

    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
    published by the Free Software Foundation; either version 3 of the
    License, or (at your option) any later version.

    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with the GNU C Library; see the file COPYING3.  If
    not see <http://www.gnu.org/licenses/>.  */

 /* This contains contribution from Cygnus Support.  */

 /* Global variable.  Only the name is significant.
    To find the address, look in the corresponding external symbol.  */
 __define_stab (N_GSYM, 0x20, "GSYM")

 /* Function name for BSD Fortran.  Only the name is significant.
    To find the address, look in the corresponding external symbol.  */
 __define_stab (N_FNAME, 0x22, "FNAME")

 /* Function name or text-segment variable for C.  Value is its address.
    Desc is supposedly starting line number, but GCC doesn't set it
    and DBX seems not to miss it.  */
 __define_stab (N_FUN, 0x24, "FUN")

 /* Data-segment variable with internal linkage.  Value is its address.
    "Static Sym".  */
 __define_stab (N_STSYM, 0x26, "STSYM")

 /* BSS-segment variable with internal linkage.  Value is its address.  */
 __define_stab (N_LCSYM, 0x28, "LCSYM")

 /* Begin function marker.  */
 __define_stab (N_BNSYM, 0x2e, "BNSYM")

 /* End function marker.  */
 __define_stab (N_ENSYM, 0x4e, "ENSYM")

 /* Name of main routine.  Only the name is significant.
    This is not used in C.  */
 __define_stab (N_MAIN, 0x2a, "MAIN")

 /* Global symbol in Pascal.
    Supposedly the value is its line number; I'm skeptical.  */
 __define_stab (N_PC, 0x30, "PC")

 /* Number of symbols:  0, files,,funcs,lines according to Ultrix V4.0.  */
 __define_stab (N_NSYMS, 0x32, "NSYMS")

 /* "No DST map for sym: name, ,0,type,ignored"  according to Ultrix V4.0.  */
 __define_stab (N_NOMAP, 0x34, "NOMAP")

 /* New stab from Solaris.  I don't know what it means, but it
    don't seem to contain useful information.  */
 __define_stab (N_OBJ, 0x38, "OBJ")

 /* New stab from Solaris.  I don't know what it means, but it
    don't seem to contain useful information.  Possibly related to the
    optimization flags used in this module.  */
 __define_stab (N_OPT, 0x3c, "OPT")

 /* Register variable.  Value is number of register.  */
 __define_stab (N_RSYM, 0x40, "RSYM")

 /* Modula-2 compilation unit.  Can someone say what info it contains?  */
 __define_stab (N_M2C, 0x42, "M2C")

 /* Line number in text segment.  Desc is the line number;
    value is corresponding address.  */
 __define_stab (N_SLINE, 0x44, "SLINE")

 /* Similar, for data segment.  */
 __define_stab (N_DSLINE, 0x46, "DSLINE")

 /* Similar, for bss segment.  */
 __define_stab (N_BSLINE, 0x48, "BSLINE")

 /* Sun's source-code browser stabs.  ?? Don't know what the fields are.
    Supposedly the field is "path to associated .cb file".  THIS VALUE
    OVERLAPS WITH N_BSLINE!  */
 __define_stab (N_BROWS, 0x48, "BROWS")

 /* GNU Modula-2 definition module dependency.  Value is the modification time
    of the definition file.  Other is nonzero if it is imported with the
    GNU M2 keyword %INITIALIZE.  Perhaps N_M2C can be used if there
    are enough empty fields? */
 __define_stab(N_DEFD, 0x4a, "DEFD")

 /* THE FOLLOWING TWO STAB VALUES CONFLICT.  Happily, one is for Modula-2
    and one is for C++.   Still,...  */
 /* GNU C++ exception variable.  Name is variable name.  */
 __define_stab (N_EHDECL, 0x50, "EHDECL")
 /* Modula2 info "for imc":  name,,0,0,0  according to Ultrix V4.0.  */
 __define_stab (N_MOD2, 0x50, "MOD2")

 /* GNU C++ `catch' clause.  Value is its address.  Desc is nonzero if
    this entry is immediately followed by a CAUGHT stab saying what exception
    was caught.  Multiple CAUGHT stabs means that multiple exceptions
    can be caught here.  If Desc is 0, it means all exceptions are caught
    here.  */
 __define_stab (N_CATCH, 0x54, "CATCH")

 /* Structure or union element.  Value is offset in the structure.  */
 __define_stab (N_SSYM, 0x60, "SSYM")

 /* Name of main source file.
    Value is starting text address of the compilation.  */
 __define_stab (N_SO, 0x64, "SO")

 /* Automatic variable in the stack.  Value is offset from frame pointer.
    Also used for type descriptions.  */
 __define_stab (N_LSYM, 0x80, "LSYM")

 /* Beginning of an include file.  Only Sun uses this.
    In an object file, only the name is significant.
    The Sun linker puts data into some of the other fields.  */
 __define_stab (N_BINCL, 0x82, "BINCL")

 /* Name of sub-source file (#include file).
    Value is starting text address of the compilation.  */
 __define_stab (N_SOL, 0x84, "SOL")

 /* Parameter variable.  Value is offset from argument pointer.
    (On most machines the argument pointer is the same as the frame pointer.  */
 __define_stab (N_PSYM, 0xa0, "PSYM")

 /* End of an include file.  No name.
    This and N_BINCL act as brackets around the file's output.
    In an object file, there is no significant data in this entry.
    The Sun linker puts data into some of the fields.  */
 __define_stab (N_EINCL, 0xa2, "EINCL")

 /* Alternate entry point.  Value is its address.  */
 __define_stab (N_ENTRY, 0xa4, "ENTRY")

 /* Beginning of lexical block.
    The desc is the nesting level in lexical blocks.
    The value is the address of the start of the text for the block.
    The variables declared inside the block *precede* the N_LBRAC symbol.  */
 __define_stab (N_LBRAC, 0xc0, "LBRAC")

 /* Place holder for deleted include file.  Replaces a N_BINCL and everything
    up to the corresponding N_EINCL.  The Sun linker generates these when
    it finds multiple identical copies of the symbols from an include file.
    This appears only in output from the Sun linker.  */
 __define_stab (N_EXCL, 0xc2, "EXCL")

 /* Modula-2 scope information.  Can someone say what info it contains?  */
 __define_stab (N_SCOPE, 0xc4, "SCOPE")

 /* End of a lexical block.  Desc matches the N_LBRAC's desc.
    The value is the address of the end of the text for the block.  */
 __define_stab (N_RBRAC, 0xe0, "RBRAC")

 /* Begin named common block.  Only the name is significant.  */
 __define_stab (N_BCOMM, 0xe2, "BCOMM")

 /* End named common block.  Only the name is significant
    (and it should match the N_BCOMM).  */
 __define_stab (N_ECOMM, 0xe4, "ECOMM")

 /* End common (local name): value is address.
    I'm not sure how this is used.  */
 __define_stab (N_ECOML, 0xe8, "ECOML")

 /* These STAB's are used on Gould systems for Non-Base register symbols
    or something like that.  FIXME.  I have assigned the values at random
    since I don't have a Gould here.  Fixups from Gould folk welcome...  */
 __define_stab (N_NBTEXT, 0xF0, "NBTEXT")
 __define_stab (N_NBDATA, 0xF2, "NBDATA")
 __define_stab (N_NBBSS,  0xF4, "NBBSS")
 __define_stab (N_NBSTS,  0xF6, "NBSTS")
 __define_stab (N_NBLCS,  0xF8, "NBLCS")

 /* Second symbol entry containing a length-value for the preceding entry.
    The value is the length.  */
 __define_stab (N_LENG, 0xfe, "LENG")

 /* The above information, in matrix format.

 			STAB MATRIX
 	_________________________________________________
 	| 00 - 1F are not dbx stab symbols		|
 	| In most cases, the low bit is the EXTernal bit|

 	| 00 UNDEF  | 02 ABS	| 04 TEXT   | 06 DATA	|
 	| 01  |EXT  | 03  |EXT	| 05  |EXT  | 07  |EXT	|

 	| 08 BSS    | 0A INDR	| 0C FN_SEQ | 0E   	|
 	| 09  |EXT  | 0B 	| 0D	    | 0F	|

 	| 10 	    | 12 COMM	| 14 SETA   | 16 SETT	|
 	| 11	    | 13	| 15 	    | 17	|

 	| 18 SETD   | 1A SETB	| 1C SETV   | 1E WARNING|
 	| 19	    | 1B	| 1D 	    | 1F FN	|

 	|_______________________________________________|
 	| Debug entries with bit 01 set are unused.	|
 	| 20 GSYM   | 22 FNAME	| 24 FUN    | 26 STSYM	|
 	| 28 LCSYM  | 2A MAIN	| 2C	    | 2E BNSYM	|
 	| 30 PC	    | 32 NSYMS	| 34 NOMAP  | 36	|
 	| 38 OBJ    | 3A	| 3C OPT    | 3E	|
 	| 40 RSYM   | 42 M2C	| 44 SLINE  | 46 DSLINE |
 	| 48 BSLINE*| 4A DEFD	| 4C        | 4E ENSYM	|
 	| 50 EHDECL*| 52	| 54 CATCH  | 56        |
 	| 58        | 5A        | 5C        | 5E	|
 	| 60 SSYM   | 62	| 64 SO	    | 66 	|
 	| 68 	    | 6A	| 6C	    | 6E	|
 	| 70	    | 72	| 74	    | 76	|
 	| 78	    | 7A	| 7C	    | 7E	|
 	| 80 LSYM   | 82 BINCL	| 84 SOL    | 86	|
 	| 88	    | 8A	| 8C	    | 8E	|
 	| 90	    | 92	| 94	    | 96	|
 	| 98	    | 9A	| 9C	    | 9E	|
 	| A0 PSYM   | A2 EINCL	| A4 ENTRY  | A6	|
 	| A8	    | AA	| AC	    | AE	|
 	| B0	    | B2	| B4	    | B6	|
 	| B8	    | BA	| BC	    | BE	|
 	| C0 LBRAC  | C2 EXCL	| C4 SCOPE  | C6	|
 	| C8	    | CA	| CC	    | CE	|
 	| D0	    | D2	| D4	    | D6	|
 	| D8	    | DA	| DC	    | DE	|
 	| E0 RBRAC  | E2 BCOMM	| E4 ECOMM  | E6	|
 	| E8 ECOML  | EA	| EC	    | EE	|
 	| F0	    | F2	| F4	    | F6	|
 	| F8	    | FA	| FC	    | FE LENG	|
 	+-----------------------------------------------+
  * 50 EHDECL is also MOD2.
  * 48 BSLINE is also BROWS.
  */
	/* Table of DBX symbol codes for the GNU system.
	Copyright (C) 1988-2021 Free Software Foundation, Inc.
	This file is part of the GNU C Library.

	The GNU C Library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Library General Public License as
	published by the Free Software Foundation; either version 3 of the
	License, or (at your option) any later version.

	The GNU C Library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Library General Public License for more details.

	You should have received a copy of the GNU Library General Public
	License along with the GNU C Library; see the file COPYING3. If
	not see <http://www.gnu.org/licenses/>. */

	/* This contains contribution from Cygnus Support. */

	/* Global variable. Only the name is significant.
	To find the address, look in the corresponding external symbol. */
	__define_stab (N_GSYM, 0x20, "GSYM")

	/* Function name for BSD Fortran. Only the name is significant.
	To find the address, look in the corresponding external symbol. */
	__define_stab (N_FNAME, 0x22, "FNAME")

	/* Function name or text-segment variable for C. Value is its address.
	Desc is supposedly starting line number, but GCC doesn't set it
	and DBX seems not to miss it. */
	__define_stab (N_FUN, 0x24, "FUN")

	/* Data-segment variable with internal linkage. Value is its address.
	"Static Sym". */
	__define_stab (N_STSYM, 0x26, "STSYM")

	/* BSS-segment variable with internal linkage. Value is its address. */
	__define_stab (N_LCSYM, 0x28, "LCSYM")

	/* Begin function marker. */
	__define_stab (N_BNSYM, 0x2e, "BNSYM")

	/* End function marker. */
	__define_stab (N_ENSYM, 0x4e, "ENSYM")

	/* Name of main routine. Only the name is significant.
	This is not used in C. */
	__define_stab (N_MAIN, 0x2a, "MAIN")

	/* Global symbol in Pascal.
	Supposedly the value is its line number; I'm skeptical. */
	__define_stab (N_PC, 0x30, "PC")

	/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
	__define_stab (N_NSYMS, 0x32, "NSYMS")

	/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
	__define_stab (N_NOMAP, 0x34, "NOMAP")

	/* New stab from Solaris. I don't know what it means, but it
	don't seem to contain useful information. */
	__define_stab (N_OBJ, 0x38, "OBJ")

	/* New stab from Solaris. I don't know what it means, but it
	don't seem to contain useful information. Possibly related to the
	optimization flags used in this module. */
	__define_stab (N_OPT, 0x3c, "OPT")

	/* Register variable. Value is number of register. */
	__define_stab (N_RSYM, 0x40, "RSYM")

	/* Modula-2 compilation unit. Can someone say what info it contains? */
	__define_stab (N_M2C, 0x42, "M2C")

	/* Line number in text segment. Desc is the line number;
	value is corresponding address. */
	__define_stab (N_SLINE, 0x44, "SLINE")

	/* Similar, for data segment. */
	__define_stab (N_DSLINE, 0x46, "DSLINE")

	/* Similar, for bss segment. */
	__define_stab (N_BSLINE, 0x48, "BSLINE")

	/* Sun's source-code browser stabs. ?? Don't know what the fields are.
	Supposedly the field is "path to associated .cb file". THIS VALUE
	OVERLAPS WITH N_BSLINE! */
	__define_stab (N_BROWS, 0x48, "BROWS")

	/* GNU Modula-2 definition module dependency. Value is the modification time
	of the definition file. Other is nonzero if it is imported with the
	GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there
	are enough empty fields? */
	__define_stab(N_DEFD, 0x4a, "DEFD")

	/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2
	and one is for C++. Still,... */
	/* GNU C++ exception variable. Name is variable name. */
	__define_stab (N_EHDECL, 0x50, "EHDECL")
	/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */
	__define_stab (N_MOD2, 0x50, "MOD2")

	/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
	this entry is immediately followed by a CAUGHT stab saying what exception
	was caught. Multiple CAUGHT stabs means that multiple exceptions
	can be caught here. If Desc is 0, it means all exceptions are caught
	here. */
	__define_stab (N_CATCH, 0x54, "CATCH")

	/* Structure or union element. Value is offset in the structure. */
	__define_stab (N_SSYM, 0x60, "SSYM")

	/* Name of main source file.
	Value is starting text address of the compilation. */
	__define_stab (N_SO, 0x64, "SO")

	/* Automatic variable in the stack. Value is offset from frame pointer.
	Also used for type descriptions. */
	__define_stab (N_LSYM, 0x80, "LSYM")

	/* Beginning of an include file. Only Sun uses this.
	In an object file, only the name is significant.
	The Sun linker puts data into some of the other fields. */
	__define_stab (N_BINCL, 0x82, "BINCL")

	/* Name of sub-source file (#include file).
	Value is starting text address of the compilation. */
	__define_stab (N_SOL, 0x84, "SOL")

	/* Parameter variable. Value is offset from argument pointer.
	(On most machines the argument pointer is the same as the frame pointer. */
	__define_stab (N_PSYM, 0xa0, "PSYM")

	/* End of an include file. No name.
	This and N_BINCL act as brackets around the file's output.
	In an object file, there is no significant data in this entry.
	The Sun linker puts data into some of the fields. */
	__define_stab (N_EINCL, 0xa2, "EINCL")

	/* Alternate entry point. Value is its address. */
	__define_stab (N_ENTRY, 0xa4, "ENTRY")

	/* Beginning of lexical block.
	The desc is the nesting level in lexical blocks.
	The value is the address of the start of the text for the block.
	The variables declared inside the block precede the N_LBRAC symbol. */
	__define_stab (N_LBRAC, 0xc0, "LBRAC")

	/* Place holder for deleted include file. Replaces a N_BINCL and everything
	up to the corresponding N_EINCL. The Sun linker generates these when
	it finds multiple identical copies of the symbols from an include file.
	This appears only in output from the Sun linker. */
	__define_stab (N_EXCL, 0xc2, "EXCL")

	/* Modula-2 scope information. Can someone say what info it contains? */
	__define_stab (N_SCOPE, 0xc4, "SCOPE")

	/* End of a lexical block. Desc matches the N_LBRAC's desc.
	The value is the address of the end of the text for the block. */
	__define_stab (N_RBRAC, 0xe0, "RBRAC")

	/* Begin named common block. Only the name is significant. */
	__define_stab (N_BCOMM, 0xe2, "BCOMM")

	/* End named common block. Only the name is significant
	(and it should match the N_BCOMM). */
	__define_stab (N_ECOMM, 0xe4, "ECOMM")

	/* End common (local name): value is address.
	I'm not sure how this is used. */
	__define_stab (N_ECOML, 0xe8, "ECOML")

	/* These STAB's are used on Gould systems for Non-Base register symbols
	or something like that. FIXME. I have assigned the values at random
	since I don't have a Gould here. Fixups from Gould folk welcome... */
	__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
	__define_stab (N_NBDATA, 0xF2, "NBDATA")
	__define_stab (N_NBBSS, 0xF4, "NBBSS")
	__define_stab (N_NBSTS, 0xF6, "NBSTS")
	__define_stab (N_NBLCS, 0xF8, "NBLCS")

	/* Second symbol entry containing a length-value for the preceding entry.
	The value is the length. */
	__define_stab (N_LENG, 0xfe, "LENG")

	/* The above information, in matrix format.

	STAB MATRIX
	_________________________________________________
	\| 00 - 1F are not dbx stab symbols \|
	\| In most cases, the low bit is the EXTernal bit\|

	\| 00 UNDEF \| 02 ABS \| 04 TEXT \| 06 DATA \|
	\| 01 \|EXT \| 03 \|EXT \| 05 \|EXT \| 07 \|EXT \|

	\| 08 BSS \| 0A INDR \| 0C FN_SEQ \| 0E \|
	\| 09 \|EXT \| 0B \| 0D \| 0F \|

	\| 10 \| 12 COMM \| 14 SETA \| 16 SETT \|
	\| 11 \| 13 \| 15 \| 17 \|

	\| 18 SETD \| 1A SETB \| 1C SETV \| 1E WARNING\|
	\| 19 \| 1B \| 1D \| 1F FN \|

	\|_______________________________________________\|
	\| Debug entries with bit 01 set are unused. \|
	\| 20 GSYM \| 22 FNAME \| 24 FUN \| 26 STSYM \|
	\| 28 LCSYM \| 2A MAIN \| 2C \| 2E BNSYM \|
	\| 30 PC \| 32 NSYMS \| 34 NOMAP \| 36 \|
	\| 38 OBJ \| 3A \| 3C OPT \| 3E \|
	\| 40 RSYM \| 42 M2C \| 44 SLINE \| 46 DSLINE \|
	\| 48 BSLINE*\| 4A DEFD \| 4C \| 4E ENSYM \|
	\| 50 EHDECL*\| 52 \| 54 CATCH \| 56 \|
	\| 58 \| 5A \| 5C \| 5E \|
	\| 60 SSYM \| 62 \| 64 SO \| 66 \|
	\| 68 \| 6A \| 6C \| 6E \|
	\| 70 \| 72 \| 74 \| 76 \|
	\| 78 \| 7A \| 7C \| 7E \|
	\| 80 LSYM \| 82 BINCL \| 84 SOL \| 86 \|
	\| 88 \| 8A \| 8C \| 8E \|
	\| 90 \| 92 \| 94 \| 96 \|
	\| 98 \| 9A \| 9C \| 9E \|
	\| A0 PSYM \| A2 EINCL \| A4 ENTRY \| A6 \|
	\| A8 \| AA \| AC \| AE \|
	\| B0 \| B2 \| B4 \| B6 \|
	\| B8 \| BA \| BC \| BE \|
	\| C0 LBRAC \| C2 EXCL \| C4 SCOPE \| C6 \|
	\| C8 \| CA \| CC \| CE \|
	\| D0 \| D2 \| D4 \| D6 \|
	\| D8 \| DA \| DC \| DE \|
	\| E0 RBRAC \| E2 BCOMM \| E4 ECOMM \| E6 \|
	\| E8 ECOML \| EA \| EC \| EE \|
	\| F0 \| F2 \| F4 \| F6 \|
	\| F8 \| FA \| FC \| FE LENG \|
	+-----------------------------------------------+
	* 50 EHDECL is also MOD2.
	* 48 BSLINE is also BROWS.
	*/