X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fsubsegs.h;h=9a5abb019c1c9aef8b7388e08c2aa421af7e7c30;hb=6174d9c85e9c00fcbf75f23e81064d2bcadb6d10;hp=fa0f4994663cc96c4465a6a8268408065a1cc809;hpb=ace68c4ed92c1d7820a3bda5d78f56a5a34932c2;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/subsegs.h b/gas/subsegs.h index fa0f499466..9a5abb019c 100644 --- a/gas/subsegs.h +++ b/gas/subsegs.h @@ -1,21 +1,23 @@ /* subsegs.h -> subsegs.c - Copyright (C) 1987 Free Software Foundation, Inc. + Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1998, 2000 + Free Software Foundation, Inc. -This file is part of GAS, the GNU Assembler. + 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 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. + 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. */ + 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, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ /* * For every sub-segment the user mentions in the ASsembler program, @@ -36,52 +38,118 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ * represent code fragments, for that sub-segment, forward chained. */ +#include "obstack.h" + 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 */ + 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 */ +#ifdef BFD_ASSEMBLER + fixS *fix_root; /* Root of fixups for this subsegment. */ + fixS *fix_tail; /* Last fixup for this subsegment. */ +#endif + struct obstack frch_obstack; /* for objects in this frag chain */ + fragS *frch_frag_now; /* frag_now for this subsegment */ }; typedef struct frchain frchainS; -extern frchainS * frchain_root; /* NULL means no frchains yet. */ - /* all subsegments' chains hang off here */ +/* All subsegments' chains hang off here. NULL means no frchains yet. */ +extern frchainS *frchain_root; -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. */ +/* Frchain we are assembling into now. That is, the current segment's + frag chain, even if it contains no (complete) frags. */ +extern frchainS *frchain_now; - -#ifdef MANY_SEGMENTS -typedef struct -{ +typedef struct segment_info_struct { frchainS *frchainP; - int hadone; + unsigned int hadone : 1; + + /* This field is set if this is a .bss section which does not really + have any contents. Once upon a time a .bss section did not have + any frags, but that is no longer true. This field prevent the + SEC_HAS_CONTENTS flag from being set for the section even if + there are frags. */ + unsigned int bss : 1; + int user_stuff; - struct frag *frag_root; - struct frag *last_frag; + + /* Fixups for this segment. If BFD_ASSEMBLER, this is only valid + after the frchains are run together. */ fixS *fix_root; fixS *fix_tail; + +#if defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) struct internal_scnhdr scnhdr; + enum linkonce_type linkonce; + const char *name; +#endif + symbolS *dot; - struct lineno_list *lineno_list_head; - struct lineno_list *lineno_list_tail; - + struct lineno_list *lineno_list_head; + struct lineno_list *lineno_list_tail; + +#ifdef BFD_ASSEMBLER + /* Which BFD section does this gas segment correspond to? */ + asection *bfd_section; + + /* NULL, or pointer to the gas symbol that is the section symbol for + this section. sym->bsym and bfd_section->symbol should be the same. */ + symbolS *sym; +#endif + + union { + /* Current size of section holding stabs strings. */ + unsigned long stab_string_size; + /* Initial frag for ELF. */ + char *p; + } + stabu; + +#ifdef NEED_LITERAL_POOL + unsigned long literal_pool_size; +#endif + +#ifdef TC_SEGMENT_INFO_TYPE + TC_SEGMENT_INFO_TYPE tc_segment_info_data; +#endif } segment_info_type; -segment_info_type segment_info[]; + +#ifdef BFD_ASSEMBLER + +extern segment_info_type *seg_info PARAMS ((segT)); +extern symbolS *section_symbol PARAMS ((segT)); + +#else /* ! BFD_ASSEMBLER */ + +#ifdef MANY_SEGMENTS + +extern segment_info_type segment_info[]; + +#define seg_info(SEC) (&segment_info[SEC]) + #else -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.) */ + +/* Sentinel for frchain crawling. Points to the 1st data-segment + frchain. (Which is pointed to by the last text-segment frchain.) */ +extern frchainS *data0_frchainP; +extern frchainS *bss0_frchainP; + +/* Dummy so stuff can compile. Should never be used. */ +struct seg_info_trash { + struct { + unsigned stab_string_size : 1; + } stabu; + unsigned hadone : 1; +}; +#define seg_info(S) (abort (), (struct seg_info_trash *) 0) #endif -/* end: subsegs.h */ +#endif /* ! BFD_ASSEMBLER */ + +extern void subsegs_print_statistics PARAMS ((FILE *));