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author | Alan Modra <amodra@gmail.com> | 2001-03-20 03:12:01 +0000 |
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committer | Alan Modra <amodra@gmail.com> | 2001-03-20 03:12:01 +0000 |
commit | 38686296b33380716ebee5e36a6915c8ae90fc01 (patch) | |
tree | 36029e6487e6b2286247a3c6f10f12c983eac082 | |
parent | 486363b69b062711ab7e542b7f5ae6d3d9f4bbde (diff) | |
download | gdb-38686296b33380716ebee5e36a6915c8ae90fc01.zip gdb-38686296b33380716ebee5e36a6915c8ae90fc01.tar.gz gdb-38686296b33380716ebee5e36a6915c8ae90fc01.tar.bz2 |
Use `relax_marker' instead of fragile address test code to determine
whether a frag's fr_address has been updated.
-rw-r--r-- | gas/ChangeLog | 9 | ||||
-rw-r--r-- | gas/frags.h | 6 | ||||
-rw-r--r-- | gas/write.c | 54 |
3 files changed, 30 insertions, 39 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 054e911..86e67bf 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,12 @@ +2001-03-20 Alan Modra <alan@linuxcare.com.au> + + * frags.h (struct frag): Add relax_marker. + * write.c (is_dnrange): Delete. + (relax_frag): Use correct types for `aim', `target', `address'. + Delete `offset', `was_address'. Test `relax_marker' instead of + using fragile (and slow) address test. + (relax_segment): Init and flip `relax_marker'. + 2001-03-19 Alan Modra <alan@linuxcare.com.au> * config/tc-i386.c (md_assemble <REGISTER_WARNINGS>): Correct diff --git a/gas/frags.h b/gas/frags.h index 7c29621..e4cb050 100644 --- a/gas/frags.h +++ b/gas/frags.h @@ -1,5 +1,5 @@ /* frags.h - Header file for the frag concept. - Copyright 1987, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000 + Copyright 1987, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -62,6 +62,10 @@ struct frag { struct list_info_struct *line; #endif + /* Flipped each relax pass so we can easily determine whether + fr_address has been adjusted. */ + unsigned int relax_marker:1; + /* What state is my tail in? */ relax_stateT fr_type; relax_substateT fr_subtype; diff --git a/gas/write.c b/gas/write.c index ec42193..b647a11 100644 --- a/gas/write.c +++ b/gas/write.c @@ -1996,28 +1996,6 @@ write_object_file () #ifdef TC_GENERIC_RELAX_TABLE -static int is_dnrange PARAMS ((fragS *, fragS *)); - -/* Subroutines of relax_segment. */ - -static int -is_dnrange (f1, f2) - fragS *f1; - fragS *f2; -{ - addressT f2addr; - - f2addr = f2->fr_address; - for (; f1; f1 = f1->fr_next) - { - if (f1->fr_next == f2) - return 1; - if (f1->fr_address > f2addr) - break; - } - return 0; -} - /* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */ long @@ -2030,17 +2008,19 @@ relax_frag (segment, fragP, stretch) const relax_typeS *start_type; relax_substateT next_state; relax_substateT this_state; - long aim, target, growth; - symbolS *symbolP = fragP->fr_symbol; - long offset = fragP->fr_offset; - /* Recompute was_address by undoing "+= stretch" done by relax_segment. */ - unsigned long was_address = fragP->fr_address - stretch; - unsigned long address = fragP->fr_address; - const relax_typeS *table = TC_GENERIC_RELAX_TABLE; - + long growth; + offsetT aim; + addressT target; + addressT address; + symbolS *symbolP; + const relax_typeS *table; + + target = fragP->fr_offset; + address = fragP->fr_address; + table = TC_GENERIC_RELAX_TABLE; this_state = fragP->fr_subtype; start_type = this_type = table + this_state; - target = offset; + symbolP = fragP->fr_symbol; if (symbolP) { @@ -2064,15 +2044,11 @@ relax_frag (segment, fragP, stretch) /* If frag has yet to be reached on this pass, assume it will move by STRETCH just as we did. If this is not so, it will be because some frag - between grows, and that will force another pass. - - Beware zero-length frags. */ + between grows, and that will force another pass. */ if (stretch != 0 - && S_GET_SEGMENT (symbolP) == segment - && (sym_frag->fr_address > was_address - || (sym_frag->fr_address == was_address - && is_dnrange (fragP, sym_frag)))) + && sym_frag->relax_marker != fragP->relax_marker + && S_GET_SEGMENT (symbolP) == segment) { target += stretch; } @@ -2179,6 +2155,7 @@ relax_segment (segment_frag_root, segment) address = 0; for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) { + fragP->relax_marker = 0; fragP->fr_address = address; address += fragP->fr_fix; @@ -2264,6 +2241,7 @@ relax_segment (segment_frag_root, segment) offsetT offset; symbolS *symbolP; + fragP->relax_marker ^= 1; was_address = fragP->fr_address; address = fragP->fr_address += stretch; symbolP = fragP->fr_symbol; |