diff options
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/subsegs.h | 119 |
1 files changed, 81 insertions, 38 deletions
diff --git a/gas/subsegs.h b/gas/subsegs.h index 7f97eeb..0b65c0f 100644 --- a/gas/subsegs.h +++ b/gas/subsegs.h @@ -1,18 +1,19 @@ /* subsegs.h -> subsegs.c - Copyright (C) 1987 Free Software Foundation, Inc. - + + Copyright (C) 1987, 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. */ @@ -38,50 +39,92 @@ 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 */ }; 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 { - frchainS *frchainP; - int hadone; - int user_stuff; - /* struct frag *frag_root;*/ - /* struct frag *last_frag;*/ - fixS *fix_root; - fixS *fix_tail; - struct internal_scnhdr scnhdr; - symbolS *dot; - - struct lineno_list *lineno_list_head; - struct lineno_list *lineno_list_tail; - + frchainS *frchainP; + 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. */ + int bss : 1; + + int user_stuff; + fixS *fix_root; + fixS *fix_tail; +#if defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) + struct internal_scnhdr scnhdr; +#endif + symbolS *dot; + + 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 } segment_info_type; -segment_info_type segment_info[]; + +#ifdef BFD_ASSEMBLER + +#define seg_info(SEC) \ + ((segment_info_type *) bfd_get_section_userdata (stdoutput, (SEC))) +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; #endif +#endif /* ! BFD_ASSEMBLER */ + /* end of subsegs.h */ |