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-rw-r--r--gnu/usr.bin/gas/subsegs.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/gnu/usr.bin/gas/subsegs.c b/gnu/usr.bin/gas/subsegs.c
deleted file mode 100644
index 0d2ee09c13a..00000000000
--- a/gnu/usr.bin/gas/subsegs.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/* $OpenBSD: subsegs.c,v 1.3 2002/07/16 19:57:58 fgsch Exp $ */
-
-/* subsegs.c - subsegments -
- Copyright (C) 1987, 1990, 1991, 1992 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 2, 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. */
-
-/*
- * Segments & sub-segments.
- */
-
-#ifndef lint
-static char rcsid[] = "$OpenBSD: subsegs.c,v 1.3 2002/07/16 19:57:58 fgsch Exp $";
-#endif
-
-#include "as.h"
-
-#include "subsegs.h"
-#include "obstack.h"
-
-#ifdef MANY_SEGMENTS
-segment_info_type segment_info[SEG_MAXIMUM_ORDINAL];
-
-frchainS* frchain_root,
- * frchain_now;
-
-#else
-frchainS* frchain_root,
- * frchain_now, /* Commented in "subsegs.h". */
- * data0_frchainP;
-
-#endif
-char * const /* in: segT out: char* */
- seg_name[] = {
- "absolute",
-#ifdef MANY_SEGMENTS
- "e0","e1","e2","e3","e4","e5","e6","e7","e8","e9",
-#else
- "text",
- "data",
- "bss",
-#endif
- "unknown",
- "absent",
- "pass1",
- "ASSEMBLER-INTERNAL-LOGIC-ERROR!",
- "bignum/flonum",
- "difference",
- "debug",
- "transfert vector preload",
- "transfert vector postload",
- "register",
- "",
- }; /* Used by error reporters, dumpers etc. */
-
-
-void
- subsegs_begin()
-{
- /* Check table(s) seg_name[], seg_N_TYPE[] is in correct order */
-#ifdef MANY_SEGMENTS
-#else
- know(SEG_ABSOLUTE == 0);
- know(SEG_TEXT == 1);
- know(SEG_DATA == 2);
- know(SEG_BSS == 3);
- know(SEG_UNKNOWN == 4);
- know(SEG_ABSENT == 5);
- know(SEG_PASS1 == 6);
- know(SEG_GOOF == 7);
- know(SEG_BIG == 8);
- know(SEG_DIFFERENCE == 9);
- know(SEG_DEBUG == 10);
- know(SEG_NTV == 11);
- know(SEG_PTV == 12);
- know(SEG_REGISTER == 13);
- know(SEG_MAXIMUM_ORDINAL == SEG_REGISTER );
- /* know(segment_name(SEG_MAXIMUM_ORDINAL + 1)[0] == 0);*/
-#endif
-
- obstack_begin(&frags, 5000);
- frchain_root = NULL;
- frchain_now = NULL; /* Warn new_subseg() that we are booting. */
- /* Fake up 1st frag. */
- /* It won't be used=> is ok if obstack... */
- /* pads the end of it for alignment. */
- frag_now=(fragS *)obstack_alloc(&frags,SIZEOF_STRUCT_FRAG);
- memset(frag_now, 0, SIZEOF_STRUCT_FRAG);
- /* This 1st frag will not be in any frchain. */
- /* We simply give subseg_new somewhere to scribble. */
- now_subseg = 42; /* Lie for 1st call to subseg_new. */
-#ifdef MANY_SEGMENTS
- {
- int i;
- for (i = SEG_E0; i < SEG_UNKNOWN; i++) {
- subseg_new(i, 0);
- segment_info[i].frchainP = frchain_now;
- }
- }
-#else
- subseg_new(SEG_DATA, 0); /* .data 0 */
- data0_frchainP = frchain_now;
-#endif
-
-}
-
-/*
- * subseg_change()
- *
- * Change the subsegment we are in, BUT DO NOT MAKE A NEW FRAG for the
- * subsegment. If we are already in the correct subsegment, change nothing.
- * This is used eg as a worker for subseg_new [which does make a new frag_now]
- * and for changing segments after we have read the source. We construct eg
- * fixSs even after the source file is read, so we do have to keep the
- * segment context correct.
- */
-void
- subseg_change (seg, subseg)
-register segT seg;
-register int subseg;
-{
- now_seg = seg;
- now_subseg = subseg;
- know(SEG_NORMAL(seg));
-#ifdef MANY_SEGMENTS
- seg_fix_rootP = &segment_info[seg].fix_root;
- seg_fix_tailP = &segment_info[seg].fix_tail;
-#else
- switch (seg) {
- case SEG_DATA:
- seg_fix_rootP = &data_fix_root;
- seg_fix_tailP = &data_fix_tail;
- break;
- case SEG_TEXT:
- seg_fix_rootP = &text_fix_root;
- seg_fix_tailP = &text_fix_tail;
- break;
- case SEG_BSS:
- seg_fix_rootP = &bss_fix_root;
- seg_fix_tailP = &bss_fix_tail;
- break;
- }
-#endif
-}
-
-/*
- * subseg_new()
- *
- * If you attempt to change to the current subsegment, nothing happens.
- *
- * In: segT, subsegT code for new subsegment.
- * frag_now -> incomplete frag for current subsegment.
- * If frag_now == NULL, then there is no old, incomplete frag, so
- * the old frag is not closed off.
- *
- * Out: now_subseg, now_seg updated.
- * Frchain_now points to the (possibly new) struct frchain for this
- * sub-segment.
- * Frchain_root updated if needed.
- */
-
-void
- subseg_new (seg, subseg) /* begin assembly for a new sub-segment */
-register segT seg; /* SEG_DATA or SEG_TEXT */
-register subsegT subseg;
-{
- long tmp; /* JF for obstack alignment hacking */
- know(SEG_NORMAL(seg));
- if (seg != now_seg || subseg != now_subseg)
- { /* we just changed sub-segments */
- register frchainS * frcP; /* crawl frchain chain */
- register frchainS** lastPP; /* address of last pointer */
- frchainS *newP; /* address of new frchain */
- register fragS *former_last_fragP;
- register fragS *new_fragP;
-
- if (frag_now) /* If not bootstrapping. */
- {
- frag_now->fr_fix = obstack_next_free(& frags) - frag_now->fr_literal;
- frag_wane(frag_now); /* Close off any frag in old subseg. */
- }
- /*
- * It would be nice to keep an obstack for each subsegment, if we swap
- * subsegments a lot. Hence we would have much fewer frag_wanes().
- */
- {
-
- obstack_finish( &frags);
- /*
- * If we don't do the above, the next object we put on obstack frags
- * will appear to start at the fr_literal of the current frag.
- * Also, above ensures that the next object will begin on a
- * address that is aligned correctly for the engine that runs
- * this program.
- */
- }
- subseg_change (seg, (int)subseg);
- /*
- * Attempt to find or make a frchain for that sub seg.
- * Crawl along chain of frchainSs, begins @ frchain_root.
- * If we need to make a frchainS, link it into correct
- * position of chain rooted in frchain_root.
- */
- for (frcP = * (lastPP = & frchain_root);
- frcP
- && (int)(frcP->frch_seg) <= (int)seg;
- frcP = * ( lastPP = & frcP->frch_next)
- )
- {
- if ( (int)(frcP->frch_seg) == (int)seg
- && frcP->frch_subseg >= subseg)
- {
- break;
- }
- }
- /*
- * frcP: Address of the 1st frchainS in correct segment with
- * frch_subseg >= subseg.
- * We want to either use this frchainS, or we want
- * to insert a new frchainS just before it.
- *
- * If frcP == NULL, then we are at the end of the chain
- * of frchainS-s. A NULL frcP means we fell off the end
- * of the chain looking for a
- * frch_subseg >= subseg, so we
- * must make a new frchainS.
- *
- * If we ever maintain a pointer to
- * the last frchainS in the chain, we change that pointer
- * ONLY when frcP == NULL.
- *
- * lastPP: Address of the pointer with value frcP;
- * Never NULL.
- * May point to frchain_root.
- *
- */
- if ( ! frcP
- || ( (int)(frcP->frch_seg) > (int)seg
- || frcP->frch_subseg > subseg)) /* Kinky logic only works with 2 segments. */
- {
- /*
- * This should be the only code that creates a frchainS.
- */
- newP=(frchainS *)obstack_alloc(&frags,sizeof(frchainS));
- memset(newP, 0, sizeof(frchainS));
- /* This begines on a good boundary */
- /* because a obstack_done() preceeded it. */
- /* It implies an obstack_done(), so we */
- /* expect the next object allocated to */
- /* begin on a correct boundary. */
- *lastPP = newP;
- newP->frch_next = frcP; /* perhaps NULL */
- (frcP = newP)->frch_subseg = subseg;
- newP->frch_seg = seg;
- newP->frch_last = NULL;
- }
- /*
- * Here with frcP->ing to the frchainS for subseg.
- */
- frchain_now = frcP;
- /*
- * Make a fresh frag for the subsegment.
- */
- /* We expect this to happen on a correct */
- /* boundary since it was proceeded by a */
- /* obstack_done(). */
- tmp=obstack_alignment_mask(&frags); /* JF disable alignment */
- obstack_alignment_mask(&frags)=0;
- frag_now=(fragS *)obstack_alloc(&frags,SIZEOF_STRUCT_FRAG);
- obstack_alignment_mask(&frags)=tmp;
- /* know(frags.obstack_c_next_free == frag_now->fr_literal); */
- /* But we want any more chars to come */
- /* immediately after the structure we just made. */
- new_fragP = frag_now;
- new_fragP->fr_next = NULL;
- /*
- * Append new frag to current frchain.
- */
- former_last_fragP = frcP->frch_last;
- if (former_last_fragP)
- {
- know( former_last_fragP->fr_next == NULL );
- know( frchain_now->frch_root );
- former_last_fragP->fr_next = new_fragP;
- }
- else
- {
- frcP->frch_root = new_fragP;
- }
- frcP->frch_last = new_fragP;
- } /* if (changing subsegments) */
-} /* subseg_new() */
-
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
-
-/* end of subsegs.c */
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