mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
5868b1fe68
as the value of a symbol. * struc-symbol.h (struct symbol): Removed sy_forward field. Added sy_resolved and sy_resolving single bit fields. * symbols.c (symbol_new): Don't initialize sy_forward field. (resolve_symbol_value): New function to adjust symbol value by fragment address, using recursion to resolve forward symbols. * symbols.h: Added prototype for new function. * read.c (pseudo_set): Set symbolP->sy_value to an undefined expression rather than setting symbolP->sy_forward. * write.c (write_object_file): Use resolve_symbol_value on symbols, keeping the common case (the old behaviour) inline. * config/obj-aout.c (obj_aout_frob_symbol): Removed sy_forward handling (subsumed by write.c change). * config/obj-coff.c, config/obj-coffbfd.c (obj_coff_val): Set sy_value rather than sy_forward. * config/obj-coffbfd.c (obj_coff_endef, yank_symbols): Check expression segment rather than sy_forward. (yank_symbols): Use resolve_symbol_value. (crawl_symbols): Removed extra pass over symbols. * config/obj-aout.c, config/obj-bout.c, config/obj-coff.c, config/obj-vms.c (obj_crawl_symbol_chain): Removed extra pass over symbols which handled sy_forward; use resolve_symbol_value instead. * config/obj-coff.h, config/obj-coffbfd.h (obj_frob_forward_symbol): Define. * config/obj-elf.c (obj_elf_stab_generic): Check expression segment rather than sy_forward. * config/obj-vms.c (VMS_Check_For_Main): Don't initialize sy_forward; do initialize sy_resolved and sy_resolving. * config/tc-hppa.h (STAB_FIXUP): Use sy_value, not sy_forward.
2569 lines
64 KiB
C
2569 lines
64 KiB
C
/* coff object file format with bfd
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Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
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This file is part of GAS.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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How does this releate to the rest of GAS ?
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Well, all the other files in gas are more or less a black box. It
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takes care of opening files, parsing command lines, stripping blanks
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etc etc. This module gets a chance to register what it wants to do by
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saying that it is interested in various pseduo ops. The other big
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change is write_object_file. This runs through all the data
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structures that gas builds, and outputs the file in the format of our
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choice.
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Hacked for BFDness by steve chamberlain
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This object module now supports the Hitachi H8/{3|5}00 and the AMD 29k
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sac@cygnus.com
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*/
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#include "as.h"
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#include "obstack.h"
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#include "subsegs.h"
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#include "frags.h"
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#include "../bfd/libbfd.h"
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#include "../bfd/libcoff.h"
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/* The NOP_OPCODE is for the alignment fill value. Fill with nop so
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that we can stick sections together without causing trouble. */
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#ifndef NOP_OPCODE
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#define NOP_OPCODE 0x00
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#endif
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#define MIN(a,b) ((a) < (b)? (a) : (b))
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/* This vector is used to turn an internal segment into a section #
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suitable for insertion into a coff symbol table
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*/
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const short seg_N_TYPE[] =
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{ /* in: segT out: N_TYPE bits */
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C_ABS_SECTION,
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1,
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2,
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3,
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4,
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5,
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6,
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7,
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8,
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9,
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10,
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C_UNDEF_SECTION, /* SEG_UNKNOWN */
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C_UNDEF_SECTION, /* SEG_ABSENT */
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C_UNDEF_SECTION, /* SEG_PASS1 */
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C_UNDEF_SECTION, /* SEG_GOOF */
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C_UNDEF_SECTION, /* SEG_BIG */
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C_UNDEF_SECTION, /* SEG_DIFFERENCE */
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C_DEBUG_SECTION, /* SEG_DEBUG */
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C_NTV_SECTION, /* SEG_NTV */
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C_PTV_SECTION, /* SEG_PTV */
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C_REGISTER_SECTION, /* SEG_REGISTER */
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};
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int function_lineoff = -1; /* Offset in line#s where the last function
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started (the odd entry for line #0) */
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static symbolS *last_line_symbol;
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/* Add 4 to the real value to get the index and compensate the
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negatives. This vector is used by S_GET_SEGMENT to turn a coff
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section number into a segment number
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*/
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static symbolS *previous_file_symbol = NULL;
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void c_symbol_merge ();
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static int line_base;
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symbolS *c_section_symbol ();
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bfd *abfd;
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void EXFUN (bfd_as_write_hook, (struct internal_filehdr *,
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bfd * abfd));
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static void EXFUN (fixup_segment, (segment_info_type *segP,
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segT this_segment_type));
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static void EXFUN (fixup_mdeps, (fragS *,
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object_headers *,
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segT));
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static void EXFUN (fill_section, (bfd * abfd,
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object_headers *,
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unsigned long *));
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char *EXFUN (s_get_name, (symbolS * s));
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static symbolS *EXFUN (tag_find_or_make, (char *name));
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static symbolS *EXFUN (tag_find, (char *name));
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static int
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EXFUN (c_line_new, (
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symbolS * symbol,
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long paddr,
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unsigned short line_number,
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fragS * frag));
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static void EXFUN (w_symbols,
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(bfd * abfd,
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char *where,
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symbolS * symbol_rootP));
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static void EXFUN (obj_coff_def, (int what));
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static void EXFUN (obj_coff_lcomm, (void));
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static void EXFUN (obj_coff_dim, (void));
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static void EXFUN (obj_coff_text, (void));
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static void EXFUN (obj_coff_data, (void));
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static void EXFUN( obj_coff_bss,(void));
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static void EXFUN( obj_coff_ident,(void));
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static void EXFUN (obj_coff_endef, (void));
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static void EXFUN (obj_coff_line, (void));
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static void EXFUN (obj_coff_ln, (int));
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static void EXFUN (obj_coff_scl, (void));
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static void EXFUN (obj_coff_size, (void));
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static void EXFUN (obj_coff_tag, (void));
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static void EXFUN (obj_coff_type, (void));
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static void EXFUN (obj_coff_val, (void));
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void EXFUN (obj_coff_section, (void));
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static void EXFUN (tag_init, (void));
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static void EXFUN (tag_insert, (char *name, symbolS * symbolP));
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static struct hash_control *tag_hash;
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static symbolS *def_symbol_in_progress = NULL;
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const pseudo_typeS obj_pseudo_table[] =
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{
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{"def", obj_coff_def, 0},
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{"dim", obj_coff_dim, 0},
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{"endef", obj_coff_endef, 0},
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{"line", obj_coff_line, 0},
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{"ln", obj_coff_ln, 0},
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{"appline", obj_coff_ln, 1},
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{"scl", obj_coff_scl, 0},
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{"size", obj_coff_size, 0},
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{"tag", obj_coff_tag, 0},
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{"type", obj_coff_type, 0},
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{"val", obj_coff_val, 0},
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{"section", obj_coff_section, 0},
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{"use", obj_coff_section, 0},
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{"sect", obj_coff_section, 0},
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{"text", obj_coff_text, 0},
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{"data", obj_coff_data, 0},
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{"bss", obj_coff_bss, 0},
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{"ident", obj_coff_ident, 0},
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{"ABORT", s_abort, 0},
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{"lcomm", obj_coff_lcomm, 0},
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{NULL} /* end sentinel */
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}; /* obj_pseudo_table */
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/* Section stuff
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We allow more than just the standard 3 sections, infact, we allow
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10 sections, (though the usual three have to be there).
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This structure performs the mappings for us:
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*/
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/* OBS stuff
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static struct internal_scnhdr bss_section_header;
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struct internal_scnhdr data_section_header;
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struct internal_scnhdr text_section_header;
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const segT N_TYPE_seg [32] =
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{
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};
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*/
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#define N_SEG 32
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typedef struct
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{
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segT seg_t;
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int i;
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} seg_info_type;
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seg_info_type seg_info_off_by_4[N_SEG] =
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{
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{SEG_PTV, },
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{SEG_NTV, },
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{SEG_DEBUG, },
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{SEG_ABSOLUTE, },
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{SEG_UNKNOWN, },
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{SEG_E0},
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{SEG_E1},
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{SEG_E2},
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{SEG_E3},
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{SEG_E4},
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{SEG_E5},
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{SEG_E6},
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{SEG_E7},
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{SEG_E8},
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{SEG_E9},
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{(segT)15},
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{(segT)16},
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{(segT)17},
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{(segT)18},
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{(segT)19},
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{(segT)20},
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{(segT)0},
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{(segT)0},
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{(segT)0},
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{SEG_REGISTER}
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};
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#define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
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#define SEG_INFO_FROM_SEG_NUMBER(x) (seg_info_off_by_4[(x)])
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relax_addressT
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DEFUN (relax_align, (address, alignment),
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register relax_addressT address AND
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register long alignment)
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{
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relax_addressT mask;
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relax_addressT new_address;
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mask = ~((~0) << alignment);
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new_address = (address + mask) & (~mask);
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return (new_address - address);
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} /* relax_align() */
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segT
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DEFUN (s_get_segment, (x),
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symbolS * x)
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{
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return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum).seg_t;
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}
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/* calculate the size of the frag chain and fill in the section header
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to contain all of it, also fill in the addr of the sections */
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static unsigned int
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DEFUN (size_section, (abfd, idx),
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bfd * abfd AND
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unsigned int idx)
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{
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unsigned int size = 0;
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fragS *frag = segment_info[idx].frchainP->frch_root;
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while (frag)
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{
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size = frag->fr_address;
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if (frag->fr_address != size)
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{
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printf ("Out of step\n");
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size = frag->fr_address;
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}
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switch (frag->fr_type)
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{
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#ifdef TC_COFF_SIZEMACHDEP
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case rs_machine_dependent:
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size += TC_COFF_SIZEMACHDEP (frag);
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break;
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#endif
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case rs_fill:
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case rs_org:
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size += frag->fr_fix;
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size += frag->fr_offset * frag->fr_var;
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break;
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case rs_align:
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size += frag->fr_fix;
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size += relax_align (size, frag->fr_offset);
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}
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frag = frag->fr_next;
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}
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segment_info[idx].scnhdr.s_size = size;
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return size;
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}
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static unsigned int
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DEFUN (count_entries_in_chain, (idx),
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unsigned int idx)
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{
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unsigned int nrelocs;
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fixS *fixup_ptr;
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/* Count the relocations */
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fixup_ptr = segment_info[idx].fix_root;
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nrelocs = 0;
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while (fixup_ptr != (fixS *) NULL)
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{
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if (TC_COUNT_RELOC (fixup_ptr))
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{
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#ifdef TC_A29K
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if (fixup_ptr->fx_r_type == RELOC_CONSTH)
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nrelocs += 2;
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else
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nrelocs++;
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#else
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nrelocs++;
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#endif
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}
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fixup_ptr = fixup_ptr->fx_next;
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}
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return nrelocs;
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}
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/* output all the relocations for a section */
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void
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DEFUN (do_relocs_for, (abfd, h, file_cursor),
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bfd * abfd AND
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object_headers * h AND
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unsigned long *file_cursor)
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{
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unsigned int nrelocs;
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unsigned int idx;
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unsigned long reloc_start = *file_cursor;
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for (idx = SEG_E0; idx < SEG_E9; idx++)
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{
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if (segment_info[idx].scnhdr.s_name[0])
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{
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struct external_reloc *ext_ptr;
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struct external_reloc *external_reloc_vec;
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unsigned int external_reloc_size;
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unsigned int base = segment_info[idx].scnhdr.s_paddr;
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fixS *fix_ptr = segment_info[idx].fix_root;
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nrelocs = count_entries_in_chain (idx);
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if (nrelocs)
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/* Bypass this stuff if no relocs. This also incidentally
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avoids a SCO bug, where free(malloc(0)) tends to crash. */
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{
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external_reloc_size = nrelocs * RELSZ;
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external_reloc_vec =
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(struct external_reloc *) malloc (external_reloc_size);
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ext_ptr = external_reloc_vec;
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/* Fill in the internal coff style reloc struct from the
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internal fix list. */
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while (fix_ptr)
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{
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symbolS *symbol_ptr;
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struct internal_reloc intr;
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/* Only output some of the relocations */
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if (TC_COUNT_RELOC (fix_ptr))
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{
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#ifdef TC_RELOC_MANGLE
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TC_RELOC_MANGLE (fix_ptr, &intr, base);
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#else
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symbolS *dot;
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symbol_ptr = fix_ptr->fx_addsy;
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intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
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intr.r_vaddr =
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base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
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intr.r_offset = fix_ptr->fx_offset;
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intr.r_offset = 0;
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/* Turn the segment of the symbol into an offset. */
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if (symbol_ptr)
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{
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dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
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if (dot)
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{
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intr.r_symndx = dot->sy_number;
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}
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else
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{
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intr.r_symndx = symbol_ptr->sy_number;
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}
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}
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else
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{
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intr.r_symndx = -1;
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}
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#endif
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(void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
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ext_ptr++;
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#if defined(TC_A29K)
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/* The 29k has a special kludge for the high 16 bit
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reloc. Two relocations are emited, R_IHIHALF,
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and R_IHCONST. The second one doesn't contain a
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symbol, but uses the value for offset. */
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if (intr.r_type == R_IHIHALF)
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{
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/* now emit the second bit */
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intr.r_type = R_IHCONST;
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intr.r_symndx = fix_ptr->fx_addnumber;
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(void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
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ext_ptr++;
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}
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#endif
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}
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fix_ptr = fix_ptr->fx_next;
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}
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|
/* Write out the reloc table */
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|
bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size,
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abfd);
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free (external_reloc_vec);
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|
|
/* Fill in section header info. */
|
|
segment_info[idx].scnhdr.s_relptr = *file_cursor;
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*file_cursor += external_reloc_size;
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segment_info[idx].scnhdr.s_nreloc = nrelocs;
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}
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else
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{
|
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/* No relocs */
|
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segment_info[idx].scnhdr.s_relptr = 0;
|
|
}
|
|
}
|
|
}
|
|
/* Set relocation_size field in file headers */
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|
H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
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|
}
|
|
|
|
|
|
/* run through a frag chain and write out the data to go with it, fill
|
|
in the scnhdrs with the info on the file postions
|
|
*/
|
|
static void
|
|
DEFUN (fill_section, (abfd, h, file_cursor),
|
|
bfd * abfd AND
|
|
object_headers *h AND
|
|
unsigned long *file_cursor)
|
|
{
|
|
|
|
unsigned int i;
|
|
unsigned int paddr = 0;
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
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|
{
|
|
unsigned int offset = 0;
|
|
|
|
struct internal_scnhdr *s = &(segment_info[i].scnhdr);
|
|
|
|
if (s->s_name[0])
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|
{
|
|
fragS *frag = segment_info[i].frchainP->frch_root;
|
|
char *buffer;
|
|
|
|
if (s->s_size == 0)
|
|
s->s_scnptr = 0;
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|
else
|
|
{
|
|
buffer = xmalloc (s->s_size);
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|
s->s_scnptr = *file_cursor;
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|
}
|
|
know (s->s_paddr == paddr);
|
|
|
|
if (strcmp (s->s_name, ".text") == 0)
|
|
s->s_flags |= STYP_TEXT;
|
|
else if (strcmp (s->s_name, ".data") == 0)
|
|
s->s_flags |= STYP_DATA;
|
|
else if (strcmp (s->s_name, ".bss") == 0)
|
|
{
|
|
s->s_scnptr = 0;
|
|
s->s_flags |= STYP_BSS;
|
|
#ifndef TC_I386
|
|
#ifndef TC_A29K
|
|
/* Apparently the SVR3 linker is confused by noload
|
|
sections. So is the UDI mondfe program. */
|
|
s->s_flags |= STYP_NOLOAD;
|
|
#endif
|
|
#endif
|
|
}
|
|
else if (strcmp (s->s_name, ".lit") == 0)
|
|
s->s_flags = STYP_LIT | STYP_TEXT;
|
|
else if (strcmp (s->s_name, ".init") == 0)
|
|
s->s_flags |= STYP_TEXT;
|
|
else if (strcmp (s->s_name, ".fini") == 0)
|
|
s->s_flags |= STYP_TEXT;
|
|
else if (strncmp (s->s_name, ".comment", 8) == 0)
|
|
s->s_flags |= STYP_INFO;
|
|
|
|
while (frag)
|
|
{
|
|
unsigned int fill_size;
|
|
switch (frag->fr_type)
|
|
{
|
|
case rs_machine_dependent:
|
|
if (frag->fr_fix)
|
|
{
|
|
memcpy (buffer + frag->fr_address,
|
|
frag->fr_literal,
|
|
frag->fr_fix);
|
|
offset += frag->fr_fix;
|
|
}
|
|
|
|
break;
|
|
case rs_fill:
|
|
case rs_align:
|
|
case rs_org:
|
|
if (frag->fr_fix)
|
|
{
|
|
memcpy (buffer + frag->fr_address,
|
|
frag->fr_literal,
|
|
frag->fr_fix);
|
|
offset += frag->fr_fix;
|
|
}
|
|
|
|
fill_size = frag->fr_var;
|
|
if (fill_size && frag->fr_offset > 0)
|
|
{
|
|
unsigned int count;
|
|
unsigned int off = frag->fr_fix;
|
|
for (count = frag->fr_offset; count; count--)
|
|
{
|
|
if (fill_size < s->s_size)
|
|
{
|
|
memcpy (buffer + frag->fr_address + off,
|
|
frag->fr_literal + frag->fr_fix,
|
|
fill_size);
|
|
off += fill_size;
|
|
offset += fill_size;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case rs_broken_word:
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
frag = frag->fr_next;
|
|
}
|
|
|
|
if (s->s_size != 0)
|
|
{
|
|
if (s->s_scnptr != 0)
|
|
{
|
|
bfd_write (buffer, s->s_size, 1, abfd);
|
|
*file_cursor += s->s_size;
|
|
}
|
|
free (buffer);
|
|
}
|
|
paddr += s->s_size;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Coff file generation & utilities */
|
|
|
|
static void
|
|
DEFUN (coff_header_append, (abfd, h),
|
|
bfd * abfd AND
|
|
object_headers * h)
|
|
{
|
|
unsigned int i;
|
|
char buffer[1000];
|
|
char buffero[1000];
|
|
|
|
bfd_seek (abfd, 0, 0);
|
|
|
|
#ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
|
|
H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
|
|
H_SET_VERSION_STAMP (h, 0);
|
|
H_SET_ENTRY_POINT (h, 0);
|
|
H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
|
|
H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
|
|
H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
|
|
buffero));
|
|
#else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
|
|
H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
|
|
#endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
|
|
|
|
i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
|
|
|
|
bfd_write (buffer, i, 1, abfd);
|
|
bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 1, abfd);
|
|
|
|
for (i = SEG_E0; i < SEG_E9; i++)
|
|
{
|
|
if (segment_info[i].scnhdr.s_name[0])
|
|
{
|
|
unsigned int size =
|
|
bfd_coff_swap_scnhdr_out (abfd,
|
|
&(segment_info[i].scnhdr),
|
|
buffer);
|
|
bfd_write (buffer, size, 1, abfd);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
char *
|
|
DEFUN (symbol_to_chars, (abfd, where, symbolP),
|
|
bfd * abfd AND
|
|
char *where AND
|
|
symbolS * symbolP)
|
|
{
|
|
unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
|
|
unsigned int i;
|
|
valueT val;
|
|
|
|
/* Turn any symbols with register attributes into abs symbols */
|
|
if (S_GET_SEGMENT (symbolP) == SEG_REGISTER)
|
|
{
|
|
S_SET_SEGMENT (symbolP, SEG_ABSOLUTE);
|
|
}
|
|
/* At the same time, relocate all symbols to their output value */
|
|
|
|
val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
|
|
+ S_GET_VALUE (symbolP));
|
|
|
|
S_SET_VALUE (symbolP, val);
|
|
|
|
symbolP->sy_symbol.ost_entry.n_value = val;
|
|
|
|
where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
|
|
where);
|
|
|
|
for (i = 0; i < numaux; i++)
|
|
{
|
|
where += bfd_coff_swap_aux_out (abfd,
|
|
&symbolP->sy_symbol.ost_auxent[i],
|
|
S_GET_DATA_TYPE (symbolP),
|
|
S_GET_STORAGE_CLASS (symbolP),
|
|
where);
|
|
}
|
|
return where;
|
|
|
|
}
|
|
|
|
|
|
void
|
|
obj_symbol_new_hook (symbolP)
|
|
symbolS *symbolP;
|
|
{
|
|
char underscore = 0; /* Symbol has leading _ */
|
|
|
|
/* Effective symbol */
|
|
/* Store the pointer in the offset. */
|
|
S_SET_ZEROES (symbolP, 0L);
|
|
S_SET_DATA_TYPE (symbolP, T_NULL);
|
|
S_SET_STORAGE_CLASS (symbolP, 0);
|
|
S_SET_NUMBER_AUXILIARY (symbolP, 0);
|
|
/* Additional information */
|
|
symbolP->sy_symbol.ost_flags = 0;
|
|
/* Auxiliary entries */
|
|
bzero ((char *) &symbolP->sy_symbol.ost_auxent[0], AUXESZ);
|
|
|
|
#ifdef STRIP_UNDERSCORE
|
|
/* Remove leading underscore at the beginning of the symbol.
|
|
* This is to be compatible with the standard librairies.
|
|
*/
|
|
if (*S_GET_NAME (symbolP) == '_')
|
|
{
|
|
underscore = 1;
|
|
S_SET_NAME (symbolP, S_GET_NAME (symbolP) + 1);
|
|
} /* strip underscore */
|
|
#endif /* STRIP_UNDERSCORE */
|
|
|
|
if (S_IS_STRING (symbolP))
|
|
SF_SET_STRING (symbolP);
|
|
if (!underscore && S_IS_LOCAL (symbolP))
|
|
SF_SET_LOCAL (symbolP);
|
|
|
|
return;
|
|
} /* obj_symbol_new_hook() */
|
|
|
|
/* stack stuff */
|
|
stack *
|
|
stack_init (chunk_size, element_size)
|
|
unsigned long chunk_size;
|
|
unsigned long element_size;
|
|
{
|
|
stack *st;
|
|
|
|
if ((st = (stack *) malloc (sizeof (stack))) == (stack *) 0)
|
|
return (stack *) 0;
|
|
if ((st->data = malloc (chunk_size)) == (char *) 0)
|
|
{
|
|
free (st);
|
|
return (stack *) 0;
|
|
}
|
|
st->pointer = 0;
|
|
st->size = chunk_size;
|
|
st->chunk_size = chunk_size;
|
|
st->element_size = element_size;
|
|
return st;
|
|
} /* stack_init() */
|
|
|
|
void
|
|
stack_delete (st)
|
|
stack *st;
|
|
{
|
|
free (st->data);
|
|
free (st);
|
|
}
|
|
|
|
char *
|
|
stack_push (st, element)
|
|
stack *st;
|
|
char *element;
|
|
{
|
|
if (st->pointer + st->element_size >= st->size)
|
|
{
|
|
st->size += st->chunk_size;
|
|
if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
|
|
return (char *) 0;
|
|
}
|
|
memcpy (st->data + st->pointer, element, st->element_size);
|
|
st->pointer += st->element_size;
|
|
return st->data + st->pointer;
|
|
} /* stack_push() */
|
|
|
|
char *
|
|
stack_pop (st)
|
|
stack *st;
|
|
{
|
|
if ((st->pointer -= st->element_size) < 0)
|
|
{
|
|
st->pointer = 0;
|
|
return (char *) 0;
|
|
}
|
|
|
|
return st->data + st->pointer;
|
|
}
|
|
|
|
char *
|
|
stack_top (st)
|
|
stack *st;
|
|
{
|
|
return st->data + st->pointer - st->element_size;
|
|
}
|
|
|
|
|
|
/*
|
|
* Handle .ln directives.
|
|
*/
|
|
|
|
static void
|
|
obj_coff_ln (appline)
|
|
int appline;
|
|
{
|
|
int l;
|
|
|
|
if (! appline && def_symbol_in_progress != NULL)
|
|
{
|
|
as_warn (".ln pseudo-op inside .def/.endef: ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* wrong context */
|
|
|
|
c_line_new (0,
|
|
obstack_next_free (&frags) - frag_now->fr_literal,
|
|
l = get_absolute_expression (),
|
|
frag_now);
|
|
#ifndef NO_LISTING
|
|
{
|
|
extern int listing;
|
|
|
|
if (listing)
|
|
{
|
|
if (! appline)
|
|
l += line_base - 1;
|
|
listing_source_line (l);
|
|
}
|
|
|
|
}
|
|
#endif
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_line() */
|
|
|
|
/*
|
|
* def()
|
|
*
|
|
* Handle .def directives.
|
|
*
|
|
* One might ask : why can't we symbol_new if the symbol does not
|
|
* already exist and fill it with debug information. Because of
|
|
* the C_EFCN special symbol. It would clobber the value of the
|
|
* function symbol before we have a chance to notice that it is
|
|
* a C_EFCN. And a second reason is that the code is more clear this
|
|
* way. (at least I think it is :-).
|
|
*
|
|
*/
|
|
|
|
#define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
|
|
#define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
|
|
*input_line_pointer == '\t') \
|
|
input_line_pointer++;
|
|
|
|
static void
|
|
DEFUN (obj_coff_def, (what),
|
|
int what)
|
|
{
|
|
char name_end; /* Char after the end of name */
|
|
char *symbol_name; /* Name of the debug symbol */
|
|
char *symbol_name_copy; /* Temporary copy of the name */
|
|
unsigned int symbol_name_length;
|
|
/*$char* directiveP;$ *//* Name of the pseudo opcode */
|
|
/*$char directive[MAX_DIRECTIVE];$ *//* Backup of the directive */
|
|
/*$char end = 0;$ *//* If 1, stop parsing */
|
|
|
|
if (def_symbol_in_progress != NULL)
|
|
{
|
|
as_warn (".def pseudo-op used inside of .def/.endef: ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
SKIP_WHITESPACES ();
|
|
|
|
def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress));
|
|
bzero (def_symbol_in_progress, sizeof (*def_symbol_in_progress));
|
|
|
|
symbol_name = input_line_pointer;
|
|
name_end = get_symbol_end ();
|
|
symbol_name_length = strlen (symbol_name);
|
|
symbol_name_copy = xmalloc (symbol_name_length + 1);
|
|
strcpy (symbol_name_copy, symbol_name);
|
|
|
|
/* Initialize the new symbol */
|
|
#ifdef STRIP_UNDERSCORE
|
|
S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
|
|
? symbol_name_copy + 1
|
|
: symbol_name_copy));
|
|
#else /* STRIP_UNDERSCORE */
|
|
S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
|
|
#endif /* STRIP_UNDERSCORE */
|
|
/* free(symbol_name_copy); */
|
|
def_symbol_in_progress->sy_name_offset = ~0;
|
|
def_symbol_in_progress->sy_number = ~0;
|
|
def_symbol_in_progress->sy_frag = &zero_address_frag;
|
|
|
|
if (S_IS_STRING (def_symbol_in_progress))
|
|
{
|
|
SF_SET_STRING (def_symbol_in_progress);
|
|
} /* "long" name */
|
|
|
|
*input_line_pointer = name_end;
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_def() */
|
|
|
|
unsigned int dim_index;
|
|
static void
|
|
DEFUN_VOID (obj_coff_endef)
|
|
{
|
|
symbolS *symbolP = 0;
|
|
/* DIM BUG FIX sac@cygnus.com */
|
|
dim_index = 0;
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".endef pseudo-op used outside of .def/.endef: ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
/* Set the section number according to storage class. */
|
|
switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
|
|
{
|
|
case C_STRTAG:
|
|
case C_ENTAG:
|
|
case C_UNTAG:
|
|
SF_SET_TAG (def_symbol_in_progress);
|
|
/* intentional fallthrough */
|
|
case C_FILE:
|
|
case C_TPDEF:
|
|
SF_SET_DEBUG (def_symbol_in_progress);
|
|
S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
|
|
break;
|
|
|
|
case C_EFCN:
|
|
SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
|
|
/* intentional fallthrough */
|
|
case C_BLOCK:
|
|
SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
|
|
/* intentional fallthrough */
|
|
case C_FCN:
|
|
S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
|
|
|
|
if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
|
|
{ /* .bf */
|
|
if (function_lineoff < 0)
|
|
{
|
|
fprintf (stderr, "`.bf' symbol without preceding function\n");
|
|
} /* missing function symbol */
|
|
SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
|
|
|
|
SF_SET_PROCESS (last_line_symbol);
|
|
function_lineoff = -1;
|
|
}
|
|
break;
|
|
|
|
#ifdef C_AUTOARG
|
|
case C_AUTOARG:
|
|
#endif /* C_AUTOARG */
|
|
case C_AUTO:
|
|
case C_REG:
|
|
case C_MOS:
|
|
case C_MOE:
|
|
case C_MOU:
|
|
case C_ARG:
|
|
case C_REGPARM:
|
|
case C_FIELD:
|
|
case C_EOS:
|
|
SF_SET_DEBUG (def_symbol_in_progress);
|
|
S_SET_SEGMENT (def_symbol_in_progress, SEG_ABSOLUTE);
|
|
break;
|
|
|
|
case C_EXT:
|
|
case C_STAT:
|
|
case C_LABEL:
|
|
/* Valid but set somewhere else (s_comm, s_lcomm, colon) */
|
|
break;
|
|
|
|
case C_USTATIC:
|
|
case C_EXTDEF:
|
|
case C_ULABEL:
|
|
as_warn ("unexpected storage class %d", S_GET_STORAGE_CLASS (def_symbol_in_progress));
|
|
break;
|
|
} /* switch on storage class */
|
|
|
|
/* Now that we have built a debug symbol, try to find if we should
|
|
merge with an existing symbol or not. If a symbol is C_EFCN or
|
|
SEG_ABSOLUTE or untagged SEG_DEBUG it never merges. We also
|
|
don't merge labels, which are in a different namespace, nor
|
|
symbols which have not yet been defined since they are typically
|
|
unique, nor do we merge tags with non-tags. */
|
|
|
|
/* Two cases for functions. Either debug followed by definition or
|
|
definition followed by debug. For definition first, we will
|
|
merge the debug symbol into the definition. For debug first, the
|
|
lineno entry MUST point to the definition function or else it
|
|
will point off into space when crawl_symbols() merges the debug
|
|
symbol into the real symbol. Therefor, let's presume the debug
|
|
symbol is a real function reference. */
|
|
|
|
/* FIXME-SOON If for some reason the definition label/symbol is
|
|
never seen, this will probably leave an undefined symbol at link
|
|
time. */
|
|
|
|
if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
|
|
|| S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
|
|
|| (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
|
|
&& !SF_GET_TAG (def_symbol_in_progress))
|
|
|| S_GET_SEGMENT (def_symbol_in_progress) == SEG_ABSOLUTE
|
|
|| def_symbol_in_progress->sy_value.X_seg != absolute_section
|
|
|| (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
|
|
|| (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
|
|
{
|
|
symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
|
|
&symbol_lastP);
|
|
}
|
|
else
|
|
{
|
|
/* This symbol already exists, merge the newly created symbol
|
|
into the This is not mandatory. The linker can handle
|
|
duplicate symbols correctly. But I guess that it save a *lot*
|
|
of space if the assembly file defines a lot of
|
|
symbols. [loic] */
|
|
|
|
/* The debug entry (def_symbol_in_progress) is merged into the
|
|
previous definition. */
|
|
|
|
c_symbol_merge (def_symbol_in_progress, symbolP);
|
|
/* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
|
|
def_symbol_in_progress = symbolP;
|
|
|
|
if (SF_GET_FUNCTION (def_symbol_in_progress)
|
|
|| SF_GET_TAG (def_symbol_in_progress))
|
|
{
|
|
/* For functions, and tags, the symbol *must* be where the
|
|
debug symbol appears. Move the existing symbol to the
|
|
current place. */
|
|
/* If it already is at the end of the symbol list, do nothing */
|
|
if (def_symbol_in_progress != symbol_lastP)
|
|
{
|
|
symbol_remove (def_symbol_in_progress, &symbol_rootP,
|
|
&symbol_lastP);
|
|
symbol_append (def_symbol_in_progress, symbol_lastP,
|
|
&symbol_rootP, &symbol_lastP);
|
|
} /* if not already in place */
|
|
} /* if function */
|
|
} /* normal or mergable */
|
|
|
|
if (SF_GET_TAG (def_symbol_in_progress)
|
|
&& symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP) == NULL)
|
|
{
|
|
tag_insert (S_GET_NAME (def_symbol_in_progress), def_symbol_in_progress);
|
|
}
|
|
|
|
if (SF_GET_FUNCTION (def_symbol_in_progress))
|
|
{
|
|
know (sizeof (def_symbol_in_progress) <= sizeof (long));
|
|
function_lineoff
|
|
= c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
|
|
|
|
SF_SET_PROCESS (def_symbol_in_progress);
|
|
|
|
if (symbolP == NULL)
|
|
{
|
|
/* That is, if this is the first time we've seen the
|
|
function... */
|
|
symbol_table_insert (def_symbol_in_progress);
|
|
} /* definition follows debug */
|
|
} /* Create the line number entry pointing to the function being defined */
|
|
|
|
def_symbol_in_progress = NULL;
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
}
|
|
|
|
static void
|
|
DEFUN_VOID (obj_coff_dim)
|
|
{
|
|
register int dim_index;
|
|
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".dim pseudo-op used outside of .def/.endef: ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
|
|
|
for (dim_index = 0; dim_index < DIMNUM; dim_index++)
|
|
{
|
|
SKIP_WHITESPACES ();
|
|
SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, get_absolute_expression ());
|
|
|
|
switch (*input_line_pointer)
|
|
{
|
|
|
|
case ',':
|
|
input_line_pointer++;
|
|
break;
|
|
|
|
default:
|
|
as_warn ("badly formed .dim directive ignored");
|
|
/* intentional fallthrough */
|
|
case '\n':
|
|
case ';':
|
|
dim_index = DIMNUM;
|
|
break;
|
|
} /* switch on following character */
|
|
} /* for each dimension */
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_dim() */
|
|
|
|
static void
|
|
obj_coff_line ()
|
|
{
|
|
int this_base;
|
|
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
obj_coff_ln (0);
|
|
return;
|
|
} /* if it looks like a stabs style line */
|
|
|
|
this_base = get_absolute_expression ();
|
|
if (this_base > line_base)
|
|
{
|
|
line_base = this_base;
|
|
}
|
|
|
|
|
|
#ifndef NO_LISTING
|
|
{
|
|
extern int listing;
|
|
if (listing && 0)
|
|
{
|
|
listing_source_line (line_base);
|
|
}
|
|
}
|
|
#endif
|
|
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
|
SA_SET_SYM_LNNO (def_symbol_in_progress, line_base);
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_line() */
|
|
|
|
static void
|
|
obj_coff_size ()
|
|
{
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".size pseudo-op used outside of .def/.endef ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
|
SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_size() */
|
|
|
|
static void
|
|
obj_coff_scl ()
|
|
{
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".scl pseudo-op used outside of .def/.endef ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_scl() */
|
|
|
|
static void
|
|
obj_coff_tag ()
|
|
{
|
|
char *symbol_name;
|
|
char name_end;
|
|
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".tag pseudo-op used outside of .def/.endef ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
|
symbol_name = input_line_pointer;
|
|
name_end = get_symbol_end ();
|
|
|
|
/* Assume that the symbol referred to by .tag is always defined. */
|
|
/* This was a bad assumption. I've added find_or_make. xoxorich. */
|
|
SA_SET_SYM_TAGNDX (def_symbol_in_progress, (long) tag_find_or_make (symbol_name));
|
|
if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
|
|
{
|
|
as_warn ("tag not found for .tag %s", symbol_name);
|
|
} /* not defined */
|
|
|
|
SF_SET_TAGGED (def_symbol_in_progress);
|
|
*input_line_pointer = name_end;
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_tag() */
|
|
|
|
static void
|
|
obj_coff_type ()
|
|
{
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".type pseudo-op used outside of .def/.endef ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
|
|
|
|
if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
|
|
S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
|
|
{
|
|
SF_SET_FUNCTION (def_symbol_in_progress);
|
|
} /* is a function */
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_type() */
|
|
|
|
static void
|
|
obj_coff_val ()
|
|
{
|
|
if (def_symbol_in_progress == NULL)
|
|
{
|
|
as_warn (".val pseudo-op used outside of .def/.endef ignored.");
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* if not inside .def/.endef */
|
|
|
|
if (is_name_beginner (*input_line_pointer))
|
|
{
|
|
char *symbol_name = input_line_pointer;
|
|
char name_end = get_symbol_end ();
|
|
|
|
if (!strcmp (symbol_name, "."))
|
|
{
|
|
def_symbol_in_progress->sy_frag = frag_now;
|
|
S_SET_VALUE (def_symbol_in_progress, obstack_next_free (&frags) - frag_now->fr_literal);
|
|
/* If the .val is != from the .def (e.g. statics) */
|
|
}
|
|
else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
|
|
{
|
|
def_symbol_in_progress->sy_value.X_add_symbol =
|
|
symbol_find_or_make (symbol_name);
|
|
def_symbol_in_progress->sy_value.X_subtract_symbol = NULL;
|
|
def_symbol_in_progress->sy_value.X_add_number = 0;
|
|
def_symbol_in_progress->sy_value.X_seg = undefined_section;
|
|
|
|
/* If the segment is undefined when the forward reference is
|
|
resolved, then copy the segment id from the forward
|
|
symbol. */
|
|
SF_SET_GET_SEGMENT (def_symbol_in_progress);
|
|
|
|
/* FIXME: gcc can generate address expressions
|
|
here in unusual cases (search for "obscure"
|
|
in sdbout.c). We just ignore the offset
|
|
here, thus generating incorrect debugging
|
|
information. We ignore the rest of the
|
|
line just below. */
|
|
}
|
|
/* Otherwise, it is the name of a non debug symbol and
|
|
its value will be calculated later. */
|
|
*input_line_pointer = name_end;
|
|
|
|
/* FIXME: this is to avoid an error message in the
|
|
FIXME case mentioned just above. */
|
|
while (! is_end_of_line[*input_line_pointer])
|
|
++input_line_pointer;
|
|
}
|
|
else
|
|
{
|
|
S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
|
|
} /* if symbol based */
|
|
|
|
demand_empty_rest_of_line ();
|
|
return;
|
|
} /* obj_coff_val() */
|
|
|
|
/*
|
|
* Maintain a list of the tagnames of the structres.
|
|
*/
|
|
|
|
static void
|
|
tag_init ()
|
|
{
|
|
tag_hash = hash_new ();
|
|
return;
|
|
} /* tag_init() */
|
|
|
|
static void
|
|
tag_insert (name, symbolP)
|
|
char *name;
|
|
symbolS *symbolP;
|
|
{
|
|
register char *error_string;
|
|
|
|
if (*(error_string = hash_jam (tag_hash, name, (char *) symbolP)))
|
|
{
|
|
as_fatal ("Inserting \"%s\" into structure table failed: %s",
|
|
name, error_string);
|
|
}
|
|
return;
|
|
} /* tag_insert() */
|
|
|
|
static symbolS *
|
|
tag_find_or_make (name)
|
|
char *name;
|
|
{
|
|
symbolS *symbolP;
|
|
|
|
if ((symbolP = tag_find (name)) == NULL)
|
|
{
|
|
symbolP = symbol_new (name,
|
|
SEG_UNKNOWN,
|
|
0,
|
|
&zero_address_frag);
|
|
|
|
tag_insert (S_GET_NAME (symbolP), symbolP);
|
|
} /* not found */
|
|
|
|
return (symbolP);
|
|
} /* tag_find_or_make() */
|
|
|
|
static symbolS *
|
|
tag_find (name)
|
|
char *name;
|
|
{
|
|
#ifdef STRIP_UNDERSCORE
|
|
if (*name == '_')
|
|
name++;
|
|
#endif /* STRIP_UNDERSCORE */
|
|
return ((symbolS *) hash_find (tag_hash, name));
|
|
} /* tag_find() */
|
|
|
|
void
|
|
obj_read_begin_hook ()
|
|
{
|
|
/* These had better be the same. Usually 18 bytes. */
|
|
#ifndef BFD_HEADERS
|
|
know (sizeof (SYMENT) == sizeof (AUXENT));
|
|
know (SYMESZ == AUXESZ);
|
|
#endif
|
|
tag_init ();
|
|
|
|
return;
|
|
} /* obj_read_begin_hook() */
|
|
|
|
/* This function runs through the symbol table and puts all the
|
|
externals onto another chain */
|
|
|
|
/* The chain of externals */
|
|
symbolS *symbol_externP = NULL;
|
|
symbolS *symbol_extern_lastP = NULL;
|
|
|
|
stack *block_stack;
|
|
symbolS *last_functionP = NULL;
|
|
symbolS *last_tagP;
|
|
|
|
static unsigned int
|
|
DEFUN_VOID (yank_symbols)
|
|
{
|
|
symbolS *symbolP;
|
|
unsigned int symbol_number = 0;
|
|
unsigned int last_file_symno = 0;
|
|
|
|
for (symbolP = symbol_rootP;
|
|
symbolP;
|
|
symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
|
|
{
|
|
if (!SF_GET_DEBUG (symbolP))
|
|
{
|
|
/* Debug symbols do not need all this rubbish */
|
|
symbolS *real_symbolP;
|
|
|
|
/* L* and C_EFCN symbols never merge. */
|
|
if (!SF_GET_LOCAL (symbolP)
|
|
&& S_GET_STORAGE_CLASS (symbolP) != C_LABEL
|
|
&& symbolP->sy_value.X_seg == absolute_section
|
|
&& (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
|
|
&& real_symbolP != symbolP)
|
|
{
|
|
/* FIXME-SOON: where do dups come from?
|
|
Maybe tag references before definitions? xoxorich. */
|
|
/* Move the debug data from the debug symbol to the
|
|
real symbol. Do NOT do the oposite (i.e. move from
|
|
real symbol to debug symbol and remove real symbol from the
|
|
list.) Because some pointers refer to the real symbol
|
|
whereas no pointers refer to the debug symbol. */
|
|
c_symbol_merge (symbolP, real_symbolP);
|
|
/* Replace the current symbol by the real one */
|
|
/* The symbols will never be the last or the first
|
|
because : 1st symbol is .file and 3 last symbols are
|
|
.text, .data, .bss */
|
|
symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
|
|
symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
|
|
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
|
symbolP = real_symbolP;
|
|
} /* if not local but dup'd */
|
|
|
|
if (flagseen['R'] && (S_GET_SEGMENT (symbolP) == SEG_E1))
|
|
{
|
|
S_SET_SEGMENT (symbolP, SEG_E0);
|
|
} /* push data into text */
|
|
|
|
resolve_symbol_value (symbolP);
|
|
|
|
if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
|
|
{
|
|
S_SET_EXTERNAL (symbolP);
|
|
}
|
|
else if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
|
|
{
|
|
if (S_GET_SEGMENT (symbolP) == SEG_E0)
|
|
{
|
|
S_SET_STORAGE_CLASS (symbolP, C_LABEL);
|
|
}
|
|
else
|
|
{
|
|
S_SET_STORAGE_CLASS (symbolP, C_STAT);
|
|
}
|
|
}
|
|
|
|
/* Mainly to speed up if not -g */
|
|
if (SF_GET_PROCESS (symbolP))
|
|
{
|
|
/* Handle the nested blocks auxiliary info. */
|
|
if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
|
|
{
|
|
if (!strcmp (S_GET_NAME (symbolP), ".bb"))
|
|
stack_push (block_stack, (char *) &symbolP);
|
|
else
|
|
{ /* .eb */
|
|
register symbolS *begin_symbolP;
|
|
begin_symbolP = *(symbolS **) stack_pop (block_stack);
|
|
if (begin_symbolP == (symbolS *) 0)
|
|
as_warn ("mismatched .eb");
|
|
else
|
|
SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
|
|
}
|
|
}
|
|
/* If we are able to identify the type of a function, and we
|
|
are out of a function (last_functionP == 0) then, the
|
|
function symbol will be associated with an auxiliary
|
|
entry. */
|
|
if (last_functionP == (symbolS *) 0 &&
|
|
SF_GET_FUNCTION (symbolP))
|
|
{
|
|
last_functionP = symbolP;
|
|
|
|
if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
|
|
{
|
|
S_SET_NUMBER_AUXILIARY (symbolP, 1);
|
|
} /* make it at least 1 */
|
|
|
|
/* Clobber possible stale .dim information. */
|
|
#if 0
|
|
/* Iffed out by steve - this fries the lnnoptr info too */
|
|
bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
|
|
sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
|
|
#endif
|
|
}
|
|
/* The C_FCN doesn't need any additional information. I
|
|
don't even know if this is needed for sdb. But the
|
|
standard assembler generates it, so... */
|
|
if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
|
|
{
|
|
if (last_functionP == (symbolS *) 0)
|
|
as_fatal ("C_EFCN symbol out of scope");
|
|
SA_SET_SYM_FSIZE (last_functionP,
|
|
(long) (S_GET_VALUE (symbolP) -
|
|
S_GET_VALUE (last_functionP)));
|
|
SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
|
|
last_functionP = (symbolS *) 0;
|
|
}
|
|
}
|
|
}
|
|
else if (SF_GET_TAG (symbolP))
|
|
{
|
|
/* First descriptor of a structure must point to
|
|
the first slot after the structure description. */
|
|
last_tagP = symbolP;
|
|
|
|
}
|
|
else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
|
|
{
|
|
/* +2 take in account the current symbol */
|
|
SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
|
|
}
|
|
else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
|
|
{
|
|
if (S_GET_VALUE (symbolP))
|
|
{
|
|
S_SET_VALUE (symbolP, last_file_symno);
|
|
last_file_symno = symbol_number;
|
|
} /* no one points at the first .file symbol */
|
|
} /* if debug or tag or eos or file */
|
|
|
|
/* We must put the external symbols apart. The loader
|
|
does not bomb if we do not. But the references in
|
|
the endndx field for a .bb symbol are not corrected
|
|
if an external symbol is removed between .bb and .be.
|
|
I.e in the following case :
|
|
[20] .bb endndx = 22
|
|
[21] foo external
|
|
[22] .be
|
|
ld will move the symbol 21 to the end of the list but
|
|
endndx will still be 22 instead of 21. */
|
|
|
|
|
|
if (SF_GET_LOCAL (symbolP))
|
|
{
|
|
/* remove C_EFCN and LOCAL (L...) symbols */
|
|
/* next pointer remains valid */
|
|
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
|
|
|
}
|
|
else if (!S_IS_DEFINED (symbolP)
|
|
&& !S_IS_DEBUG (symbolP)
|
|
&& !SF_GET_STATICS (symbolP) &&
|
|
S_GET_STORAGE_CLASS (symbolP) == C_EXT)
|
|
{ /* C_EXT && !SF_GET_FUNCTION(symbolP)) */
|
|
/* if external, Remove from the list */
|
|
symbolS *hold = symbol_previous (symbolP);
|
|
|
|
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
|
symbol_clear_list_pointers (symbolP);
|
|
symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
|
|
symbolP = hold;
|
|
}
|
|
else
|
|
{
|
|
if (SF_GET_STRING (symbolP))
|
|
{
|
|
symbolP->sy_name_offset = string_byte_count;
|
|
string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
|
|
}
|
|
else
|
|
{
|
|
symbolP->sy_name_offset = 0;
|
|
} /* fix "long" names */
|
|
|
|
symbolP->sy_number = symbol_number;
|
|
symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
|
|
} /* if local symbol */
|
|
} /* traverse the symbol list */
|
|
return symbol_number;
|
|
|
|
}
|
|
|
|
|
|
static unsigned int
|
|
DEFUN_VOID (glue_symbols)
|
|
{
|
|
unsigned int symbol_number = 0;
|
|
symbolS *symbolP;
|
|
for (symbolP = symbol_externP; symbol_externP;)
|
|
{
|
|
symbolS *tmp = symbol_externP;
|
|
|
|
/* append */
|
|
symbol_remove (tmp, &symbol_externP, &symbol_extern_lastP);
|
|
symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
|
|
|
|
/* and process */
|
|
if (SF_GET_STRING (tmp))
|
|
{
|
|
tmp->sy_name_offset = string_byte_count;
|
|
string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
|
|
}
|
|
else
|
|
{
|
|
tmp->sy_name_offset = 0;
|
|
} /* fix "long" names */
|
|
|
|
tmp->sy_number = symbol_number;
|
|
symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
|
|
} /* append the entire extern chain */
|
|
return symbol_number;
|
|
|
|
}
|
|
|
|
static unsigned int
|
|
DEFUN_VOID (tie_tags)
|
|
{
|
|
unsigned int symbol_number = 0;
|
|
|
|
symbolS *symbolP;
|
|
for (symbolP = symbol_rootP; symbolP; symbolP =
|
|
symbol_next (symbolP))
|
|
{
|
|
symbolP->sy_number = symbol_number;
|
|
|
|
|
|
|
|
if (SF_GET_TAGGED (symbolP))
|
|
{
|
|
SA_SET_SYM_TAGNDX
|
|
(symbolP,
|
|
((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
|
|
}
|
|
|
|
symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
|
|
}
|
|
return symbol_number;
|
|
|
|
}
|
|
|
|
static void
|
|
DEFUN (crawl_symbols, (h, abfd),
|
|
object_headers *h AND
|
|
bfd * abfd)
|
|
{
|
|
|
|
unsigned int i;
|
|
symbolS *symbolP;
|
|
|
|
/* Initialize the stack used to keep track of the matching .bb .be */
|
|
|
|
block_stack = stack_init (512, sizeof (symbolS *));
|
|
|
|
/* The symbol list should be ordered according to the following sequence
|
|
* order :
|
|
* . .file symbol
|
|
* . debug entries for functions
|
|
* . fake symbols for the sections, including.text .data and .bss
|
|
* . defined symbols
|
|
* . undefined symbols
|
|
* But this is not mandatory. The only important point is to put the
|
|
* undefined symbols at the end of the list.
|
|
*/
|
|
|
|
if (symbol_rootP == NULL
|
|
|| S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
|
|
{
|
|
c_dot_file_symbol ("fake");
|
|
}
|
|
/* Is there a .file symbol ? If not insert one at the beginning. */
|
|
|
|
/*
|
|
* Build up static symbols for the sections, they are filled in later
|
|
*/
|
|
|
|
|
|
for (i = SEG_E0; i < SEG_E9; i++)
|
|
{
|
|
if (segment_info[i].scnhdr.s_name[0])
|
|
{
|
|
char name[9];
|
|
|
|
strncpy (name, segment_info[i].scnhdr.s_name, 8);
|
|
name[8] = '\0';
|
|
segment_info[i].dot = c_section_symbol (name, i - SEG_E0 + 1);
|
|
}
|
|
}
|
|
|
|
|
|
/* Take all the externals out and put them into another chain */
|
|
H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
|
|
/* Take the externals and glue them onto the end.*/
|
|
H_SET_SYMBOL_TABLE_SIZE (h, H_GET_SYMBOL_COUNT (h) + glue_symbols ());
|
|
|
|
H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
|
|
know (symbol_externP == NULL);
|
|
know (symbol_extern_lastP == NULL);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Find strings by crawling along symbol table chain.
|
|
*/
|
|
|
|
void
|
|
DEFUN (w_strings, (where),
|
|
char *where)
|
|
{
|
|
symbolS *symbolP;
|
|
|
|
/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
|
|
md_number_to_chars (where, string_byte_count, 4);
|
|
where += 4;
|
|
for (symbolP = symbol_rootP;
|
|
symbolP;
|
|
symbolP = symbol_next (symbolP))
|
|
{
|
|
unsigned int size;
|
|
|
|
if (SF_GET_STRING (symbolP))
|
|
{
|
|
size = strlen (S_GET_NAME (symbolP)) + 1;
|
|
|
|
memcpy (where, S_GET_NAME (symbolP), size);
|
|
where += size;
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
DEFUN (do_linenos_for, (abfd, h, file_cursor),
|
|
bfd * abfd AND
|
|
object_headers * h AND
|
|
unsigned long *file_cursor)
|
|
{
|
|
unsigned int idx;
|
|
unsigned long start = *file_cursor;
|
|
|
|
for (idx = SEG_E0; idx < SEG_E9; idx++)
|
|
{
|
|
segment_info_type *s = segment_info + idx;
|
|
|
|
|
|
if (s->scnhdr.s_nlnno != 0)
|
|
{
|
|
struct lineno_list *line_ptr;
|
|
|
|
struct external_lineno *buffer =
|
|
(struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ);
|
|
|
|
struct external_lineno *dst = buffer;
|
|
|
|
/* Run through the table we've built and turn it into its external
|
|
form, take this chance to remove duplicates */
|
|
|
|
for (line_ptr = s->lineno_list_head;
|
|
line_ptr != (struct lineno_list *) NULL;
|
|
line_ptr = line_ptr->next)
|
|
{
|
|
|
|
if (line_ptr->line.l_lnno == 0)
|
|
{
|
|
/* Turn a pointer to a symbol into the symbols' index */
|
|
line_ptr->line.l_addr.l_symndx =
|
|
((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
|
|
}
|
|
else
|
|
{
|
|
line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
|
|
}
|
|
|
|
|
|
(void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
|
|
dst++;
|
|
|
|
}
|
|
|
|
s->scnhdr.s_lnnoptr = *file_cursor;
|
|
|
|
bfd_write (buffer, 1, s->scnhdr.s_nlnno * LINESZ, abfd);
|
|
free (buffer);
|
|
|
|
*file_cursor += s->scnhdr.s_nlnno * LINESZ;
|
|
}
|
|
}
|
|
H_SET_LINENO_SIZE (h, *file_cursor - start);
|
|
}
|
|
|
|
|
|
/* Now we run through the list of frag chains in a segment and
|
|
make all the subsegment frags appear at the end of the
|
|
list, as if the seg 0 was extra long */
|
|
|
|
static void
|
|
DEFUN_VOID (remove_subsegs)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
{
|
|
frchainS *head = segment_info[i].frchainP;
|
|
fragS dummy;
|
|
fragS *prev_frag = &dummy;
|
|
|
|
while (head && head->frch_seg == i)
|
|
{
|
|
prev_frag->fr_next = head->frch_root;
|
|
prev_frag = head->frch_last;
|
|
head = head->frch_next;
|
|
}
|
|
prev_frag->fr_next = 0;
|
|
}
|
|
}
|
|
|
|
int machine;
|
|
int coff_flags;
|
|
extern void
|
|
DEFUN_VOID (write_object_file)
|
|
{
|
|
int i;
|
|
struct frchain *frchain_ptr;
|
|
|
|
object_headers headers;
|
|
unsigned long file_cursor;
|
|
bfd *abfd;
|
|
unsigned int addr;
|
|
abfd = bfd_openw (out_file_name, TARGET_FORMAT);
|
|
|
|
|
|
if (abfd == 0)
|
|
{
|
|
as_perror ("FATAL: Can't create %s", out_file_name);
|
|
exit (42);
|
|
}
|
|
bfd_set_format (abfd, bfd_object);
|
|
bfd_set_arch_mach (abfd, BFD_ARCH, machine);
|
|
|
|
string_byte_count = 4;
|
|
|
|
for (frchain_ptr = frchain_root;
|
|
frchain_ptr != (struct frchain *) NULL;
|
|
frchain_ptr = frchain_ptr->frch_next)
|
|
{
|
|
/* Run through all the sub-segments and align them up. Also close any
|
|
open frags. We tack a .fill onto the end of the frag chain so
|
|
that any .align's size can be worked by looking at the next
|
|
frag */
|
|
|
|
subseg_new (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
|
|
#ifndef SUB_SEGMENT_ALIGN
|
|
#define SUB_SEGMENT_ALIGN(SEG) 1
|
|
#endif
|
|
frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE);
|
|
frag_wane (frag_now);
|
|
frag_now->fr_fix = 0;
|
|
know (frag_now->fr_next == NULL);
|
|
}
|
|
|
|
|
|
remove_subsegs ();
|
|
|
|
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
{
|
|
relax_segment (segment_info[i].frchainP->frch_root, i);
|
|
}
|
|
|
|
H_SET_NUMBER_OF_SECTIONS (&headers, 0);
|
|
|
|
/* Find out how big the sections are, and set the addresses. */
|
|
addr = 0;
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
{
|
|
long size;
|
|
|
|
segment_info[i].scnhdr.s_paddr = addr;
|
|
segment_info[i].scnhdr.s_vaddr = addr;
|
|
|
|
if (segment_info[i].scnhdr.s_name[0])
|
|
{
|
|
H_SET_NUMBER_OF_SECTIONS (&headers,
|
|
H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
|
|
}
|
|
|
|
size = size_section (abfd, i);
|
|
addr += size;
|
|
|
|
if (i == SEG_E0)
|
|
H_SET_TEXT_SIZE (&headers, size);
|
|
else if (i == SEG_E1)
|
|
H_SET_DATA_SIZE (&headers, size);
|
|
else if (i == SEG_E2)
|
|
H_SET_BSS_SIZE (&headers, size);
|
|
}
|
|
|
|
/* Turn the gas native symbol table shape into a coff symbol table */
|
|
crawl_symbols (&headers, abfd);
|
|
|
|
if (string_byte_count == 4)
|
|
string_byte_count = 0;
|
|
|
|
H_SET_STRING_SIZE (&headers, string_byte_count);
|
|
|
|
#if !defined(TC_H8300) && !defined(TC_Z8K)
|
|
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
|
{
|
|
fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
|
|
fixup_segment (&segment_info[i], i);
|
|
}
|
|
#endif
|
|
|
|
file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
|
|
|
|
bfd_seek (abfd, file_cursor, 0);
|
|
|
|
/* Plant the data */
|
|
|
|
fill_section (abfd, &headers, &file_cursor);
|
|
|
|
do_relocs_for (abfd, &headers, &file_cursor);
|
|
|
|
do_linenos_for (abfd, &headers, &file_cursor);
|
|
|
|
H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
|
|
#ifndef OBJ_COFF_OMIT_TIMESTAMP
|
|
H_SET_TIME_STAMP (&headers, (long)time((long*)0));
|
|
#else
|
|
H_SET_TIME_STAMP (&headers, 0);
|
|
#endif
|
|
|
|
#ifdef KEEP_RELOC_INFO
|
|
H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
|
|
COFF_FLAGS | coff_flags));
|
|
#else
|
|
H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
|
|
(H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
|
|
COFF_FLAGS | coff_flags));
|
|
#endif
|
|
|
|
{
|
|
unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
|
|
char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
|
|
char *ptr = buffer1;
|
|
H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
|
|
w_symbols (abfd, buffer1, symbol_rootP);
|
|
if (string_byte_count > 0)
|
|
w_strings (buffer1 + symtable_size);
|
|
bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd);
|
|
free (buffer1);
|
|
}
|
|
|
|
coff_header_append (abfd, &headers);
|
|
|
|
if (bfd_close_all_done (abfd) == false)
|
|
as_fatal ("Can't close %s: %s", out_file_name,
|
|
bfd_errmsg (bfd_error));
|
|
}
|
|
|
|
|
|
static void
|
|
DEFUN (change_to_section, (name, len, exp),
|
|
char *name AND
|
|
unsigned int len AND
|
|
unsigned int exp)
|
|
{
|
|
unsigned int i;
|
|
/* Find out if we've already got a section of this name etc */
|
|
for (i = SEG_E0; i < SEG_E9 && segment_info[i].scnhdr.s_name[0]; i++)
|
|
{
|
|
if (strncmp (segment_info[i].scnhdr.s_name, name, len) == 0)
|
|
{
|
|
subseg_new (i, exp);
|
|
return;
|
|
}
|
|
}
|
|
/* No section, add one */
|
|
strncpy (segment_info[i].scnhdr.s_name, name, 8);
|
|
segment_info[i].scnhdr.s_flags = STYP_REG;
|
|
subseg_new (i, exp);
|
|
}
|
|
|
|
/*
|
|
* implement the .section pseudo op:
|
|
* .section name {, "flags"}
|
|
* ^ ^
|
|
* | +--- optional flags: 'b' for bss
|
|
* | 'i' for info
|
|
* +-- section name 'l' for lib
|
|
* 'n' for noload
|
|
* 'o' for over
|
|
* 'w' for data
|
|
* 'x' for text
|
|
* But if the argument is not a quoted string, treat it as a
|
|
* subsegment number.
|
|
*/
|
|
|
|
void
|
|
DEFUN_VOID (obj_coff_section)
|
|
{
|
|
/* Strip out the section name */
|
|
char *section_name;
|
|
char *section_name_end;
|
|
char c;
|
|
int argp;
|
|
unsigned int len;
|
|
unsigned int exp;
|
|
long flags;
|
|
|
|
section_name = input_line_pointer;
|
|
c = get_symbol_end ();
|
|
section_name_end = input_line_pointer;
|
|
|
|
len = section_name_end - section_name;
|
|
input_line_pointer++;
|
|
SKIP_WHITESPACE ();
|
|
|
|
argp = 0;
|
|
if (c == ',')
|
|
argp = 1;
|
|
else if (*input_line_pointer == ',')
|
|
{
|
|
argp = 1;
|
|
++input_line_pointer;
|
|
SKIP_WHITESPACE ();
|
|
}
|
|
|
|
exp = 0;
|
|
flags = 0;
|
|
if (argp)
|
|
{
|
|
if (*input_line_pointer != '"')
|
|
exp = get_absolute_expression ();
|
|
else
|
|
{
|
|
++input_line_pointer;
|
|
while (*input_line_pointer != '"'
|
|
&& ! is_end_of_line[*input_line_pointer])
|
|
{
|
|
switch (*input_line_pointer)
|
|
{
|
|
case 'b': flags |= STYP_BSS; break;
|
|
case 'i': flags |= STYP_INFO; break;
|
|
case 'l': flags |= STYP_LIB; break;
|
|
case 'n': flags |= STYP_NOLOAD; break;
|
|
case 'o': flags |= STYP_OVER; break;
|
|
case 'w': flags |= STYP_DATA; break;
|
|
case 'x': flags |= STYP_TEXT; break;
|
|
default:
|
|
as_warn("unknown section attribute '%c'",
|
|
*input_line_pointer);
|
|
break;
|
|
}
|
|
++input_line_pointer;
|
|
}
|
|
if (*input_line_pointer == '"')
|
|
++input_line_pointer;
|
|
}
|
|
}
|
|
|
|
change_to_section (section_name, len, exp);
|
|
|
|
segment_info[now_seg].scnhdr.s_flags |= flags;
|
|
|
|
*section_name_end = c;
|
|
}
|
|
|
|
|
|
static void
|
|
obj_coff_text ()
|
|
{
|
|
change_to_section (".text", 5, get_absolute_expression ());
|
|
}
|
|
|
|
|
|
static void
|
|
obj_coff_data ()
|
|
{
|
|
change_to_section (".data", 5, get_absolute_expression ());
|
|
}
|
|
|
|
static void
|
|
obj_coff_bss()
|
|
{
|
|
if (*input_line_pointer == '\n') /* .bss */
|
|
change_to_section(".bss",4, get_absolute_expression());
|
|
else /* .bss id,expr */
|
|
obj_coff_lcomm();
|
|
}
|
|
|
|
static void
|
|
obj_coff_ident()
|
|
{
|
|
segT current_seg = now_seg; /* save current seg */
|
|
subsegT current_subseg = now_subseg;
|
|
change_to_section (".comment", 8, 0); /* .comment seg */
|
|
stringer (1); /* read string */
|
|
subseg_new (current_seg, current_subseg); /* restore current seg */
|
|
}
|
|
|
|
void
|
|
c_symbol_merge (debug, normal)
|
|
symbolS *debug;
|
|
symbolS *normal;
|
|
{
|
|
S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
|
|
S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
|
|
|
|
if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
|
|
{
|
|
S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
|
|
} /* take the most we have */
|
|
|
|
if (S_GET_NUMBER_AUXILIARY (debug) > 0)
|
|
{
|
|
memcpy ((char *) &normal->sy_symbol.ost_auxent[0], (char *) &debug->sy_symbol.ost_auxent[0], S_GET_NUMBER_AUXILIARY (debug) * AUXESZ);
|
|
} /* Move all the auxiliary information */
|
|
|
|
/* Move the debug flags. */
|
|
SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
|
|
} /* c_symbol_merge() */
|
|
|
|
static int
|
|
DEFUN (c_line_new, (symbol, paddr, line_number, frag),
|
|
symbolS * symbol AND
|
|
long paddr AND
|
|
unsigned short line_number AND
|
|
fragS * frag)
|
|
{
|
|
struct lineno_list *new_line =
|
|
(struct lineno_list *) xmalloc (sizeof (struct lineno_list));
|
|
|
|
segment_info_type *s = segment_info + now_seg;
|
|
new_line->line.l_lnno = line_number;
|
|
|
|
if (line_number == 0)
|
|
{
|
|
last_line_symbol = symbol;
|
|
new_line->line.l_addr.l_symndx = (long) symbol;
|
|
}
|
|
else
|
|
{
|
|
new_line->line.l_addr.l_paddr = paddr;
|
|
}
|
|
|
|
new_line->frag = (char *) frag;
|
|
new_line->next = (struct lineno_list *) NULL;
|
|
|
|
|
|
if (s->lineno_list_head == (struct lineno_list *) NULL)
|
|
{
|
|
s->lineno_list_head = new_line;
|
|
}
|
|
else
|
|
{
|
|
s->lineno_list_tail->next = new_line;
|
|
}
|
|
s->lineno_list_tail = new_line;
|
|
return LINESZ * s->scnhdr.s_nlnno++;
|
|
}
|
|
|
|
void
|
|
c_dot_file_symbol (filename)
|
|
char *filename;
|
|
{
|
|
symbolS *symbolP;
|
|
|
|
symbolP = symbol_new (".file",
|
|
SEG_DEBUG,
|
|
0,
|
|
&zero_address_frag);
|
|
|
|
S_SET_STORAGE_CLASS (symbolP, C_FILE);
|
|
S_SET_NUMBER_AUXILIARY (symbolP, 1);
|
|
SA_SET_FILE_FNAME (symbolP, filename);
|
|
#ifndef NO_LISTING
|
|
{
|
|
extern int listing;
|
|
if (listing)
|
|
{
|
|
listing_source_file (filename);
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
SF_SET_DEBUG (symbolP);
|
|
S_SET_VALUE (symbolP, (long) previous_file_symbol);
|
|
|
|
previous_file_symbol = symbolP;
|
|
|
|
/* Make sure that the symbol is first on the symbol chain */
|
|
if (symbol_rootP != symbolP)
|
|
{
|
|
if (symbolP == symbol_lastP)
|
|
{
|
|
symbol_lastP = symbol_lastP->sy_previous;
|
|
} /* if it was the last thing on the list */
|
|
|
|
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
|
symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
|
|
symbol_rootP = symbolP;
|
|
} /* if not first on the list */
|
|
|
|
} /* c_dot_file_symbol() */
|
|
|
|
/*
|
|
* Build a 'section static' symbol.
|
|
*/
|
|
|
|
symbolS *
|
|
c_section_symbol (name, idx)
|
|
char *name;
|
|
int idx;
|
|
{
|
|
symbolS *symbolP;
|
|
|
|
symbolP = symbol_new (name, idx,
|
|
0,
|
|
&zero_address_frag);
|
|
|
|
S_SET_STORAGE_CLASS (symbolP, C_STAT);
|
|
S_SET_NUMBER_AUXILIARY (symbolP, 1);
|
|
|
|
SF_SET_STATICS (symbolP);
|
|
|
|
return symbolP;
|
|
} /* c_section_symbol() */
|
|
|
|
static void
|
|
DEFUN (w_symbols, (abfd, where, symbol_rootP),
|
|
bfd * abfd AND
|
|
char *where AND
|
|
symbolS * symbol_rootP)
|
|
{
|
|
symbolS *symbolP;
|
|
unsigned int i;
|
|
|
|
/* First fill in those values we have only just worked out */
|
|
for (i = SEG_E0; i < SEG_E9; i++)
|
|
{
|
|
symbolP = segment_info[i].dot;
|
|
if (symbolP)
|
|
{
|
|
|
|
SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
|
|
SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
|
|
SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
|
|
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Emit all symbols left in the symbol chain.
|
|
*/
|
|
for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
|
|
{
|
|
/* Used to save the offset of the name. It is used to point
|
|
to the string in memory but must be a file offset. */
|
|
register char *temp;
|
|
|
|
tc_coff_symbol_emit_hook (symbolP);
|
|
|
|
temp = S_GET_NAME (symbolP);
|
|
if (SF_GET_STRING (symbolP))
|
|
{
|
|
S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
|
|
S_SET_ZEROES (symbolP, 0);
|
|
}
|
|
else
|
|
{
|
|
bzero (symbolP->sy_symbol.ost_entry.n_name, SYMNMLEN);
|
|
strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
|
|
}
|
|
where = symbol_to_chars (abfd, where, symbolP);
|
|
S_SET_NAME (symbolP, temp);
|
|
}
|
|
|
|
} /* w_symbols() */
|
|
|
|
static void
|
|
DEFUN_VOID (obj_coff_lcomm)
|
|
{
|
|
char *name;
|
|
char c;
|
|
int temp;
|
|
char *p;
|
|
|
|
symbolS *symbolP;
|
|
name = input_line_pointer;
|
|
|
|
c = get_symbol_end ();
|
|
p = input_line_pointer;
|
|
*p = c;
|
|
SKIP_WHITESPACE ();
|
|
if (*input_line_pointer != ',')
|
|
{
|
|
as_bad ("Expected comma after name");
|
|
ignore_rest_of_line ();
|
|
return;
|
|
}
|
|
if (*input_line_pointer == '\n')
|
|
{
|
|
as_bad ("Missing size expression");
|
|
return;
|
|
}
|
|
input_line_pointer++;
|
|
if ((temp = get_absolute_expression ()) < 0)
|
|
{
|
|
as_warn ("lcomm length (%d.) <0! Ignored.", temp);
|
|
ignore_rest_of_line ();
|
|
return;
|
|
}
|
|
*p = 0;
|
|
|
|
symbolP = symbol_find_or_make(name);
|
|
|
|
if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN &&
|
|
S_GET_VALUE(symbolP) == 0)
|
|
{
|
|
if (! need_pass_2)
|
|
{
|
|
char *p;
|
|
segT current_seg = now_seg; /* save current seg */
|
|
subsegT current_subseg = now_subseg;
|
|
|
|
subseg_new (SEG_E2, 1);
|
|
symbolP->sy_frag = frag_now;
|
|
p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
|
|
temp, (char *)0);
|
|
*p = 0;
|
|
subseg_new (current_seg, current_subseg); /* restore current seg */
|
|
S_SET_SEGMENT(symbolP, SEG_E2);
|
|
S_SET_STORAGE_CLASS(symbolP, C_STAT);
|
|
}
|
|
}
|
|
else
|
|
as_bad("Symbol %s already defined", name);
|
|
|
|
demand_empty_rest_of_line();
|
|
}
|
|
|
|
static void
|
|
DEFUN (fixup_mdeps, (frags, h, this_segment),
|
|
fragS * frags AND
|
|
object_headers * h AND
|
|
segT this_segment)
|
|
{
|
|
subseg_change (this_segment, 0);
|
|
while (frags)
|
|
{
|
|
switch (frags->fr_type)
|
|
{
|
|
case rs_align:
|
|
case rs_org:
|
|
frags->fr_type = rs_fill;
|
|
frags->fr_offset =
|
|
(frags->fr_next->fr_address - frags->fr_address - frags->fr_fix);
|
|
break;
|
|
case rs_machine_dependent:
|
|
md_convert_frag (h, frags);
|
|
frag_wane (frags);
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
frags = frags->fr_next;
|
|
}
|
|
}
|
|
|
|
#if 1
|
|
static void
|
|
DEFUN (fixup_segment, (segP, this_segment_type),
|
|
segment_info_type * segP AND
|
|
segT this_segment_type)
|
|
{
|
|
register fixS * fixP;
|
|
register symbolS *add_symbolP;
|
|
register symbolS *sub_symbolP;
|
|
register long add_number;
|
|
register int size;
|
|
register char *place;
|
|
register long where;
|
|
register char pcrel;
|
|
register fragS *fragP;
|
|
register segT add_symbol_segment = SEG_ABSOLUTE;
|
|
|
|
|
|
for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
|
|
{
|
|
fragP = fixP->fx_frag;
|
|
know (fragP);
|
|
where = fixP->fx_where;
|
|
place = fragP->fr_literal + where;
|
|
size = fixP->fx_size;
|
|
add_symbolP = fixP->fx_addsy;
|
|
#ifdef TC_I960
|
|
if (fixP->fx_callj && TC_S_IS_CALLNAME (add_symbolP))
|
|
{
|
|
/* Relocation should be done via the
|
|
associated 'bal' entry point
|
|
symbol. */
|
|
|
|
if (!TC_S_IS_BALNAME (tc_get_bal_of_call (add_symbolP)))
|
|
{
|
|
as_bad ("No 'bal' entry point for leafproc %s",
|
|
S_GET_NAME (add_symbolP));
|
|
continue;
|
|
}
|
|
fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
|
|
} /* callj relocation */
|
|
#endif
|
|
sub_symbolP = fixP->fx_subsy;
|
|
add_number = fixP->fx_offset;
|
|
pcrel = fixP->fx_pcrel;
|
|
|
|
if (add_symbolP)
|
|
{
|
|
add_symbol_segment = S_GET_SEGMENT (add_symbolP);
|
|
} /* if there is an addend */
|
|
|
|
if (sub_symbolP)
|
|
{
|
|
if (!add_symbolP)
|
|
{
|
|
/* Its just -sym */
|
|
if (S_GET_SEGMENT (sub_symbolP) != SEG_ABSOLUTE)
|
|
{
|
|
as_bad ("Negative of non-absolute symbol %s", S_GET_NAME (sub_symbolP));
|
|
} /* not absolute */
|
|
|
|
add_number -= S_GET_VALUE (sub_symbolP);
|
|
fixP->fx_subsy = 0;
|
|
|
|
/* if sub_symbol is in the same segment that add_symbol
|
|
and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
|
|
}
|
|
else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment)
|
|
&& (SEG_NORMAL (add_symbol_segment)
|
|
|| (add_symbol_segment == SEG_ABSOLUTE)))
|
|
{
|
|
/* Difference of 2 symbols from same segment. */
|
|
/* Can't make difference of 2 undefineds: 'value' means */
|
|
/* something different for N_UNDF. */
|
|
#ifdef TC_I960
|
|
/* Makes no sense to use the difference of 2 arbitrary symbols
|
|
as the target of a call instruction. */
|
|
if (fixP->fx_callj)
|
|
{
|
|
as_bad ("callj to difference of 2 symbols");
|
|
}
|
|
#endif /* TC_I960 */
|
|
add_number += S_GET_VALUE (add_symbolP) -
|
|
S_GET_VALUE (sub_symbolP);
|
|
|
|
add_symbolP = NULL;
|
|
fixP->fx_addsy = NULL;
|
|
}
|
|
else
|
|
{
|
|
/* Different segments in subtraction. */
|
|
know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE)));
|
|
|
|
if ((S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE))
|
|
{
|
|
add_number -= S_GET_VALUE (sub_symbolP);
|
|
}
|
|
else
|
|
{
|
|
as_bad ("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %d.",
|
|
segment_name (S_GET_SEGMENT (sub_symbolP)),
|
|
S_GET_NAME (sub_symbolP), fragP->fr_address + where);
|
|
} /* if absolute */
|
|
}
|
|
} /* if sub_symbolP */
|
|
|
|
if (add_symbolP)
|
|
{
|
|
if (add_symbol_segment == this_segment_type && pcrel)
|
|
{
|
|
/*
|
|
* This fixup was made when the symbol's segment was
|
|
* SEG_UNKNOWN, but it is now in the local segment.
|
|
* So we know how to do the address without relocation.
|
|
*/
|
|
#ifdef TC_I960
|
|
/* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
|
|
* in which cases it modifies *fixP as appropriate. In the case
|
|
* of a 'calls', no further work is required, and *fixP has been
|
|
* set up to make the rest of the code below a no-op.
|
|
*/
|
|
reloc_callj (fixP);
|
|
#endif /* TC_I960 */
|
|
|
|
add_number += S_GET_VALUE (add_symbolP);
|
|
add_number -= md_pcrel_from (fixP);
|
|
#ifdef TC_I386
|
|
/* On the 386 we must adjust by the segment
|
|
vaddr as well. Ian Taylor. */
|
|
add_number -= segP->scnhdr.s_vaddr;
|
|
#endif
|
|
pcrel = 0; /* Lie. Don't want further pcrel processing. */
|
|
fixP->fx_addsy = NULL; /* No relocations please. */
|
|
}
|
|
else
|
|
{
|
|
switch (add_symbol_segment)
|
|
{
|
|
case SEG_ABSOLUTE:
|
|
#ifdef TC_I960
|
|
reloc_callj (fixP); /* See comment about reloc_callj() above*/
|
|
#endif /* TC_I960 */
|
|
add_number += S_GET_VALUE (add_symbolP);
|
|
fixP->fx_addsy = NULL;
|
|
add_symbolP = NULL;
|
|
break;
|
|
default:
|
|
|
|
#ifdef TC_A29K
|
|
/* This really should be handled in the linker, but
|
|
backward compatibility forbids. */
|
|
add_number += S_GET_VALUE (add_symbolP);
|
|
#else
|
|
add_number += S_GET_VALUE (add_symbolP) +
|
|
segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
|
|
#endif
|
|
break;
|
|
|
|
case SEG_UNKNOWN:
|
|
#ifdef TC_I960
|
|
if ((int) fixP->fx_bit_fixP == 13)
|
|
{
|
|
/* This is a COBR instruction. They have only a
|
|
* 13-bit displacement and are only to be used
|
|
* for local branches: flag as error, don't generate
|
|
* relocation.
|
|
*/
|
|
as_bad ("can't use COBR format with external label");
|
|
fixP->fx_addsy = NULL; /* No relocations please. */
|
|
continue;
|
|
} /* COBR */
|
|
#endif /* TC_I960 */
|
|
#ifdef TC_I386
|
|
/* 386 COFF uses a peculiar format in
|
|
which the value of a common symbol is
|
|
stored in the .text segment (I've
|
|
checked this on SVR3.2 and SCO 3.2.2)
|
|
Ian Taylor <ian@cygnus.com>. */
|
|
if (S_IS_COMMON (add_symbolP))
|
|
add_number += S_GET_VALUE (add_symbolP);
|
|
#endif
|
|
break;
|
|
|
|
|
|
} /* switch on symbol seg */
|
|
} /* if not in local seg */
|
|
} /* if there was a + symbol */
|
|
|
|
if (pcrel)
|
|
{
|
|
add_number -= md_pcrel_from (fixP);
|
|
if (add_symbolP == 0)
|
|
{
|
|
fixP->fx_addsy = &abs_symbol;
|
|
} /* if there's an add_symbol */
|
|
#ifdef TC_I386
|
|
/* On the 386 we must adjust by the segment vaddr
|
|
as well. Ian Taylor. */
|
|
add_number -= segP->scnhdr.s_vaddr;
|
|
#endif
|
|
} /* if pcrel */
|
|
|
|
if (!fixP->fx_bit_fixP)
|
|
{
|
|
if ((size == 1 &&
|
|
(add_number & ~0xFF) && ((add_number & ~0xFF) != (-1 & ~0xFF))) ||
|
|
(size == 2 &&
|
|
(add_number & ~0xFFFF) && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF))))
|
|
{
|
|
as_bad ("Value of %d too large for field of %d bytes at 0x%x",
|
|
add_number, size, fragP->fr_address + where);
|
|
} /* generic error checking */
|
|
#ifdef WARN_SIGNED_OVERFLOW_WORD
|
|
/* Warn if a .word value is too large when treated as
|
|
a signed number. We already know it is not too
|
|
negative. This is to catch over-large switches
|
|
generated by gcc on the 68k. */
|
|
if (!flagseen['J']
|
|
&& size == 2
|
|
&& add_number > 0x7fff)
|
|
as_bad ("Signed .word overflow; switch may be too large; %d at 0x%x",
|
|
add_number, fragP->fr_address + where);
|
|
#endif
|
|
} /* not a bit fix */
|
|
/* once this fix has been applied, we don't have to output anything
|
|
nothing more need be done -*/
|
|
md_apply_fix (fixP, add_number);
|
|
} /* For each fixS in this segment. */
|
|
} /* fixup_segment() */
|
|
|
|
#endif
|