/* 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. */
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 */