mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
3a69b3aca6
Cherrypick from master 1991-04-04 18:19:53 UTC K. Richard Pixley <rich@cygnus> 'Initial revision':
gas/COPYING
gas/ChangeLog
gas/Makefile.in
gas/README
gas/app.c
gas/as.c
gas/as.h
gas/atof-generic.c
gas/bignum-copy.c
gas/bignum.h
gas/cond.c
gas/config/atof-ieee.c
gas/config/atof-vax.c
gas/config/obj-aout.c
gas/config/obj-aout.h
gas/config/obj-bout.c
gas/config/obj-bout.h
gas/config/obj-coff.c
gas/config/obj-coff.h
gas/config/tc-a29k.c
gas/config/tc-a29k.h
gas/config/tc-generic.c
gas/config/tc-generic.h
gas/config/tc-i386.c
gas/config/tc-i386.h
gas/config/tc-i860.c
gas/config/tc-i860.h
gas/config/tc-i960.c
gas/config/tc-i960.h
gas/config/tc-m68851.h
gas/config/tc-m68k.c
gas/config/tc-m68k.h
gas/config/tc-ns32k.c
gas/config/tc-ns32k.h
gas/config/tc-sparc.c
gas/config/tc-sparc.h
gas/config/tc-vax.c
gas/config/tc-vax.h
gas/config/te-generic.h
gas/config/te-ic960.h
gas/config/te-sun3.h
gas/config/vax-inst.h
gas/configure
gas/configure.in
gas/debug.c
gas/expr.c
gas/expr.h
gas/flonum-copy.c
gas/flonum-mult.c
gas/flonum.h
gas/frags.c
gas/frags.h
gas/hash.c
gas/hash.h
gas/input-file.c
gas/input-file.h
gas/input-scrub.c
gas/messages.c
gas/obj.h
gas/output-file.c
gas/output-file.h
gas/read.c
gas/read.h
gas/struc-symbol.h
gas/subsegs.c
gas/subsegs.h
gas/symbols.c
gas/symbols.h
gas/tc.h
gas/write.c
gas/write.h
ld/ld.h
ld/ldexp.c
ld/ldfile.c
ld/ldfile.h
ld/ldlang.h
ld/ldlex.h
ld/ldmain.h
ld/ldmisc.h
ld/ldwrite.h
Cherrypick from master 1991-03-21 21:29:06 UTC David Henkel-Wallace <gumby@cygnus> 'Initial revision':
ld/ldexp.h
ld/ldgram.y
ld/ldlang.c
ld/ldlex.l
ld/ldmain.c
ld/ldmisc.c
ld/ldwrite.c
Cherrypick from master 1991-01-17 15:34:55 UTC Roland Pesch <pesch@cygnus> 'Initial revision':
gas/doc/as.texinfo
66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/* subsegs.h -> subsegs.c
|
|
Copyright (C) 1987 Free Software Foundation, Inc.
|
|
|
|
This file is part of GAS, the GNU Assembler.
|
|
|
|
GAS is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 1, or (at your option)
|
|
any later version.
|
|
|
|
GAS 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GAS; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
/*
|
|
* For every sub-segment the user mentions in the ASsembler program,
|
|
* we make one struct frchain. Each sub-segment has exactly one struct frchain
|
|
* and vice versa.
|
|
*
|
|
* Struct frchain's are forward chained (in ascending order of sub-segment
|
|
* code number). The chain runs through frch_next of each subsegment.
|
|
* This makes it hard to find a subsegment's frags
|
|
* if programmer uses a lot of them. Most programs only use text0 and
|
|
* data0, so they don't suffer. At least this way:
|
|
* (1) There are no "arbitrary" restrictions on how many subsegments
|
|
* can be programmed;
|
|
* (2) Subsegments' frchain-s are (later) chained together in the order in
|
|
* which they are emitted for object file viz text then data.
|
|
*
|
|
* From each struct frchain dangles a chain of struct frags. The frags
|
|
* represent code fragments, for that sub-segment, forward chained.
|
|
*/
|
|
|
|
struct frchain /* control building of a frag chain */
|
|
{ /* FRCH = FRagment CHain control */
|
|
struct frag * frch_root; /* 1st struct frag in chain, or NULL */
|
|
struct frag * frch_last; /* last struct frag in chain, or NULL */
|
|
struct frchain * frch_next; /* next in chain of struct frchain-s */
|
|
segT frch_seg; /* SEG_TEXT or SEG_DATA. */
|
|
subsegT frch_subseg; /* subsegment number of this chain */
|
|
};
|
|
|
|
typedef struct frchain frchainS;
|
|
|
|
extern frchainS * frchain_root; /* NULL means no frchains yet. */
|
|
/* all subsegments' chains hang off here */
|
|
|
|
extern frchainS * frchain_now;
|
|
/* Frchain we are assembling into now */
|
|
/* That is, the current segment's frag */
|
|
/* chain, even if it contains no (complete) */
|
|
/* frags. */
|
|
|
|
extern frchainS * data0_frchainP;
|
|
/* Sentinel for frchain crawling. */
|
|
/* Points to the 1st data-segment frchain. */
|
|
/* (Which is pointed to by the last text- */
|
|
/* segment frchain.) */
|
|
|
|
/* end: subsegs.h */
|