/* a.out object file format
- Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
+ Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-This file is part of GAS, the GNU Assembler.
+ This file is part of GAS, the GNU Assembler.
-GAS is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2,
-or (at your option) any later version.
+ GAS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2,
+ or (at your option) any later version.
-GAS is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
-the GNU General Public License for more details.
+ GAS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ the GNU General Public License for more details.
-You should have received a copy of the GNU General Public
-License along with GAS; see the file COPYING. If not, write
-to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#define OBJ_HEADER "obj-aout.h"
#include "as.h"
-#include "aout/stab_gnu.h"
+#ifdef BFD_ASSEMBLER
+#undef NO_RELOC
+#include "aout/aout64.h"
+#endif
#include "obstack.h"
#ifndef BFD_ASSEMBLER
-/* in: segT out: N_TYPE bits */
+/* in: segT out: N_TYPE bits. */
const short seg_N_TYPE[] =
{
N_ABS,
N_TEXT,
N_DATA,
N_BSS,
- N_UNDF, /* unknown */
- N_UNDF, /* absent */
- N_UNDF, /* pass1 */
- N_UNDF, /* error */
- N_UNDF, /* bignum/flonum */
- N_UNDF, /* difference */
- N_UNDF, /* debug */
- N_UNDF, /* ntv */
- N_UNDF, /* ptv */
- N_REGISTER, /* register */
+ N_UNDF, /* Unknown. */
+ N_UNDF, /* Error. */
+ N_UNDF, /* Expression. */
+ N_UNDF, /* Debug. */
+ N_UNDF, /* Ntv. */
+ N_UNDF, /* Ptv. */
+ N_REGISTER, /* Register. */
};
const segT N_TYPE_seg[N_TYPE + 2] =
SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
- SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
+ SEG_REGISTER, /* Dummy N_REGISTER for regs = 30. */
SEG_GOOF,
};
#endif
-static void obj_aout_stab PARAMS ((int what));
-static void obj_aout_line PARAMS ((void));
-static void obj_aout_desc PARAMS ((void));
-
-const pseudo_typeS obj_pseudo_table[] =
-{
- /* stabs debug info */
- {"line", obj_aout_line, 0}, /* source code line number */
- {"ln", obj_aout_line, 0}, /* coff line number that we use anyway */
- {"desc", obj_aout_desc, 0}, /* desc */
- {"stabd", obj_aout_stab, 'd'},/* stabs */
- {"stabn", obj_aout_stab, 'n'},/* stabs */
- {"stabs", obj_aout_stab, 's'},/* stabs */
-
- /* coff debug pseudos (ignored) */
- {"def", s_ignore, 0},
- {"dim", s_ignore, 0},
- {"endef", s_ignore, 0},
- {"ident", s_ignore, 0},
- {"line", s_ignore, 0},
- {"ln", s_ignore, 0},
- {"scl", s_ignore, 0},
- {"size", s_ignore, 0},
- {"tag", s_ignore, 0},
- {"type", s_ignore, 0},
- {"val", s_ignore, 0},
- {"version", s_ignore, 0},
-
- /* stabs-in-coff (?) debug pseudos (ignored) */
- {"optim", s_ignore, 0}, /* For sun386i cc (?) */
-
- /* other stuff */
- {"ABORT", s_abort, 0},
-
- {NULL} /* end sentinel */
-}; /* obj_pseudo_table */
-
-
#ifdef BFD_ASSEMBLER
void
-obj_aout_frob_symbol (sym, punt)
- symbolS *sym;
- int *punt;
+obj_aout_frob_symbol (symbolS *sym, int *punt ATTRIBUTE_UNUSED)
{
flagword flags;
asection *sec;
int desc, type, other;
- /* Is this part format-dependent? */
- if (sym->sy_forward)
- {
- S_SET_VALUE (sym,
- S_GET_VALUE (sym)
- + S_GET_VALUE (sym->sy_forward)
- + sym->sy_forward->sy_frag->fr_address
- );
- sym->sy_forward = 0;
- }
-
- flags = sym->bsym->flags;
- desc = S_GET_DESC (sym);
- type = S_GET_TYPE (sym);
- other = S_GET_OTHER (sym);
- sec = sym->bsym->section;
+ flags = symbol_get_bfdsym (sym)->flags;
+ desc = aout_symbol (symbol_get_bfdsym (sym))->desc;
+ type = aout_symbol (symbol_get_bfdsym (sym))->type;
+ other = aout_symbol (symbol_get_bfdsym (sym))->other;
+ sec = S_GET_SEGMENT (sym);
/* Only frob simple symbols this way right now. */
- if (! (type & ~0x1f))
+ if (! (type & ~ (N_TYPE | N_EXT)))
{
- if (sec == &bfd_abs_section
- || sec == &bfd_und_section)
+ if (type == (N_UNDF | N_EXT)
+ && sec == &bfd_abs_section)
+ {
+ sec = bfd_und_section_ptr;
+ S_SET_SEGMENT (sym, sec);
+ }
+
+ if ((type & N_TYPE) != N_INDR
+ && (type & N_TYPE) != N_SETA
+ && (type & N_TYPE) != N_SETT
+ && (type & N_TYPE) != N_SETD
+ && (type & N_TYPE) != N_SETB
+ && type != N_WARNING
+ && (sec == &bfd_abs_section
+ || sec == &bfd_und_section))
return;
if (flags & BSF_EXPORT)
- type |= 1;
+ type |= N_EXT;
+
+ switch (type & N_TYPE)
+ {
+ case N_SETA:
+ case N_SETT:
+ case N_SETD:
+ case N_SETB:
+ /* Set the debugging flag for constructor symbols so that
+ BFD leaves them alone. */
+ symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
+
+ /* You can't put a common symbol in a set. The way a set
+ element works is that the symbol has a definition and a
+ name, and the linker adds the definition to the set of
+ that name. That does not work for a common symbol,
+ because the linker can't tell which common symbol the
+ user means. FIXME: Using as_bad here may be
+ inappropriate, since the user may want to force a
+ particular type without regard to the semantics of sets;
+ on the other hand, we certainly don't want anybody to be
+ mislead into thinking that their code will work. */
+ if (S_IS_COMMON (sym))
+ as_bad (_("Attempt to put a common symbol into set %s"),
+ S_GET_NAME (sym));
+ /* Similarly, you can't put an undefined symbol in a set. */
+ else if (! S_IS_DEFINED (sym))
+ as_bad (_("Attempt to put an undefined symbol into set %s"),
+ S_GET_NAME (sym));
+
+ break;
+ case N_INDR:
+ /* Put indirect symbols in the indirect section. */
+ S_SET_SEGMENT (sym, bfd_ind_section_ptr);
+ symbol_get_bfdsym (sym)->flags |= BSF_INDIRECT;
+ if (type & N_EXT)
+ {
+ symbol_get_bfdsym (sym)->flags |= BSF_EXPORT;
+ symbol_get_bfdsym (sym)->flags &=~ BSF_LOCAL;
+ }
+ break;
+ case N_WARNING:
+ /* Mark warning symbols. */
+ symbol_get_bfdsym (sym)->flags |= BSF_WARNING;
+ break;
+ }
}
else
- {
- sym->bsym->flags |= BSF_DEBUGGING;
- }
+ symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
+
+ aout_symbol (symbol_get_bfdsym (sym))->type = type;
- S_SET_TYPE (sym, type);
+ /* Double check weak symbols. */
+ if (S_IS_WEAK (sym) && S_IS_COMMON (sym))
+ as_bad (_("Symbol `%s' can not be both weak and common"),
+ S_GET_NAME (sym));
}
-#else
+void
+obj_aout_frob_file_before_fix (void)
+{
+ /* Relocation processing may require knowing the VMAs of the sections.
+ Since writing to a section will cause the BFD back end to compute the
+ VMAs, fake it out here.... */
+ bfd_byte b = 0;
+ bfd_boolean x = TRUE;
+ if (bfd_section_size (stdoutput, text_section) != 0)
+ x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0,
+ (bfd_size_type) 1);
+ else if (bfd_section_size (stdoutput, data_section) != 0)
+ x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0,
+ (bfd_size_type) 1);
+
+ assert (x);
+}
-/* Relocation. */
+#else /* ! BFD_ASSEMBLER */
+
+/* Relocation. */
+
+/** Crawl along a fixS chain. Emit the segment's relocations. */
-/*
- * emit_relocations()
- *
- * Crawl along a fixS chain. Emit the segment's relocations.
- */
void
-obj_emit_relocations (where, fixP, segment_address_in_file)
- char **where;
- fixS *fixP; /* Fixup chain for this segment. */
- relax_addressT segment_address_in_file;
+obj_emit_relocations (char **where,
+ fixS *fixP, /* Fixup chain for this segment. */
+ relax_addressT segment_address_in_file)
{
for (; fixP; fixP = fixP->fx_next)
- if (fixP->fx_addsy != NULL)
+ if (fixP->fx_done == 0)
{
+ symbolS *sym;
+
+ sym = fixP->fx_addsy;
+ while (sym->sy_value.X_op == O_symbol
+ && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
+ sym = sym->sy_value.X_add_symbol;
+ fixP->fx_addsy = sym;
+
+ if (! sym->sy_resolved && ! S_IS_DEFINED (sym))
+ {
+ char *file;
+ unsigned int line;
+
+ if (expr_symbol_where (sym, &file, &line))
+ as_bad_where (file, line, _("unresolved relocation"));
+ else
+ as_bad (_("bad relocation: symbol `%s' not in symbol table"),
+ S_GET_NAME (sym));
+ }
+
tc_aout_fix_to_chars (*where, fixP, segment_address_in_file);
*where += md_reloc_size;
}
}
#ifndef obj_header_append
-/* Aout file generation & utilities */
+/* Aout file generation & utilities. */
+
+/* An AOUT header on disk is laid out in target byte order. */
+
void
-obj_header_append (where, headers)
- char **where;
- object_headers *headers;
+obj_header_append (char **where, object_headers *headers)
{
- tc_headers_hook (headers);
+ char *p;
-#ifdef CROSS_COMPILE
- md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info));
- *where += sizeof (headers->header.a_info);
- md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
- *where += sizeof (headers->header.a_text);
- md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
- *where += sizeof (headers->header.a_data);
- md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
- *where += sizeof (headers->header.a_bss);
- md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
- *where += sizeof (headers->header.a_syms);
- md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
- *where += sizeof (headers->header.a_entry);
- md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
- *where += sizeof (headers->header.a_trsize);
- md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
- *where += sizeof (headers->header.a_drsize);
-
-#else /* CROSS_COMPILE */
-
- append (where, (char *) &headers->header, sizeof (headers->header));
-#endif /* CROSS_COMPILE */
+ tc_headers_hook (headers);
-}
+#ifdef __A_OUT_GNU_H__
+#define SIZEOF_HEADER(PIECE) (sizeof (((struct exec_bytes *) 0)->PIECE))
+#else
+#define SIZEOF_HEADER(PIECE) 4
#endif
+#define DO(PIECE) \
+ md_number_to_chars (p, headers->header.PIECE, SIZEOF_HEADER (PIECE)); \
+ p += SIZEOF_HEADER (PIECE);
+
+ p = *where;
+ DO (a_info);
+ DO (a_text);
+ DO (a_data);
+ DO (a_bss);
+ DO (a_syms);
+ DO (a_entry);
+ DO (a_trsize);
+ DO (a_drsize);
+ *where = p;
+#undef DO
+#undef SIZEOF_HEADER
+}
+#endif /* ! defined (obj_header_append) */
void
-obj_symbol_to_chars (where, symbolP)
- char **where;
- symbolS *symbolP;
+obj_symbol_to_chars (char **where, symbolS *symbolP)
{
- md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP)));
- md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP)));
- md_number_to_chars ((char *) &(symbolP->sy_symbol.n_value), S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value));
-
- append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
+ char *p = *where;
+ md_number_to_chars (p, S_GET_OFFSET (symbolP), 4);
+ p += 4;
+ /* Can't use S_GET_TYPE here as it masks. */
+ *p++ = symbolP->sy_symbol.n_type;
+ *p++ = symbolP->sy_symbol.n_other;
+ md_number_to_chars (p, S_GET_DESC (symbolP), 2);
+ p += 2;
+ md_number_to_chars (p, S_GET_VALUE (symbolP), 4);
+ p += 4;
+ *where = p;
}
void
-obj_emit_symbols (where, symbol_rootP)
- char **where;
- symbolS *symbol_rootP;
+obj_emit_symbols (char **where, symbolS *symbol_rootP)
{
symbolS *symbolP;
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;
+ to the string in memory but must be a file offset. */
+ char *temp;
temp = S_GET_NAME (symbolP);
S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
- /* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
+ /* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
S_SET_EXTERNAL (symbolP);
+ /* Adjust the type of a weak symbol. */
+ if (S_GET_WEAK (symbolP))
+ {
+ switch (S_GET_TYPE (symbolP))
+ {
+ case N_UNDF: S_SET_TYPE (symbolP, N_WEAKU); break;
+ case N_ABS: S_SET_TYPE (symbolP, N_WEAKA); break;
+ case N_TEXT: S_SET_TYPE (symbolP, N_WEAKT); break;
+ case N_DATA: S_SET_TYPE (symbolP, N_WEAKD); break;
+ case N_BSS: S_SET_TYPE (symbolP, N_WEAKB); break;
+ default: as_bad (_("%s: bad type for weak symbol"), temp); break;
+ }
+ }
+
obj_symbol_to_chars (where, symbolP);
S_SET_NAME (symbolP, temp);
}
#endif /* ! BFD_ASSEMBLER */
static void
-obj_aout_line ()
+obj_aout_line (int ignore ATTRIBUTE_UNUSED)
{
/* Assume delimiter is part of expression.
BSD4.2 as fails with delightful bug, so we
- are not being incompatible here. */
+ are not being incompatible here. */
new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
demand_empty_rest_of_line ();
-} /* obj_aout_line() */
-
-/*
- * stab()
- *
- * Handle .stabX directives, which used to be open-coded.
- * So much creeping featurism overloaded the semantics that we decided
- * to put all .stabX thinking in one place. Here.
- *
- * We try to make any .stabX directive legal. Other people's AS will often
- * do assembly-time consistency checks: eg assigning meaning to n_type bits
- * and "protecting" you from setting them to certain values. (They also zero
- * certain bits before emitting symbols. Tut tut.)
- *
- * If an expression is not absolute we either gripe or use the relocation
- * information. Other people's assemblers silently forget information they
- * don't need and invent information they need that you didn't supply.
- *
- * .stabX directives always make a symbol table entry. It may be junk if
- * the rest of your .stabX directive is malformed.
- */
-static void
-obj_aout_stab (what)
- int what;
-{
- extern int listing;
-
- register symbolS *symbolP = 0;
- register char *string;
- int saved_type = 0;
- int length;
- int goof; /* TRUE if we have aborted. */
- long longint;
-
- /*
- * Enter with input_line_pointer pointing past .stabX and any following
- * whitespace.
- */
- goof = 0; /* JF who forgot this?? */
- if (what == 's')
- {
- string = demand_copy_C_string (&length);
- SKIP_WHITESPACE ();
- if (*input_line_pointer == ',')
- input_line_pointer++;
- else
- {
- as_bad ("I need a comma after symbol's name");
- goof = 1;
- }
- }
- else
- string = "";
-
- /*
- * Input_line_pointer->after ','. String->symbol name.
- */
- if (!goof)
- {
- symbolP = symbol_new (string, undefined_section, 0, (struct frag *) 0);
- switch (what)
- {
- case 'd':
- S_SET_NAME (symbolP, NULL); /* .stabd feature. */
- S_SET_VALUE (symbolP, (char*) obstack_next_free (&frags) - frag_now->fr_literal);
- symbolP->sy_frag = frag_now;
- break;
-
- case 'n':
- symbolP->sy_frag = &zero_address_frag;
- break;
-
- case 's':
- symbolP->sy_frag = &zero_address_frag;
- break;
-
- default:
- BAD_CASE (what);
- break;
- }
-
- if (get_absolute_expression_and_terminator (&longint) == ',')
- {
- saved_type = longint;
- S_SET_TYPE (symbolP, saved_type);
- }
- else
- {
- as_bad ("I want a comma after the n_type expression");
- goof = 1;
- input_line_pointer--; /* Backup over a non-',' char. */
- }
- }
+}
- if (!goof)
- {
- if (get_absolute_expression_and_terminator (&longint) == ',')
- S_SET_OTHER (symbolP, longint);
- else
- {
- as_bad ("I want a comma after the n_other expression");
- goof = 1;
- input_line_pointer--; /* Backup over a non-',' char. */
- }
- }
+/* Handle .weak. This is a GNU extension. */
- if (!goof)
- {
- S_SET_DESC (symbolP, get_absolute_expression ());
- if (what == 's' || what == 'n')
- {
- if (*input_line_pointer != ',')
- {
- as_bad ("I want a comma after the n_desc expression");
- goof = 1;
- }
- else
- {
- input_line_pointer++;
- }
- }
- }
+static void
+obj_aout_weak (int ignore ATTRIBUTE_UNUSED)
+{
+ char *name;
+ int c;
+ symbolS *symbolP;
- if ((!goof) && (what == 's' || what == 'n'))
- {
- pseudo_set (symbolP);
- S_SET_TYPE (symbolP, saved_type);
- }
-#ifndef NO_LISTING
- if (listing && !goof)
+ do
{
- if (S_GET_TYPE (symbolP) == N_SLINE)
- {
- listing_source_line (S_GET_DESC (symbolP));
- }
- else if (S_GET_TYPE (symbolP) == N_SO || S_GET_TYPE (symbolP) == N_SOL)
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ symbolP = symbol_find_or_make (name);
+ *input_line_pointer = c;
+ SKIP_WHITESPACE ();
+ S_SET_WEAK (symbolP);
+ if (c == ',')
{
- listing_source_file (string);
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '\n')
+ c = '\n';
}
}
-#endif
+ while (c == ',');
+ demand_empty_rest_of_line ();
+}
- if (goof)
- ignore_rest_of_line ();
- else
- demand_empty_rest_of_line ();
-} /* obj_aout_stab() */
+/* Handle .type. On {Net,Open}BSD, this is used to set the n_other field,
+ which is then apparently used when doing dynamic linking. Older
+ versions of gas ignored the .type pseudo-op, so we also ignore it if
+ we can't parse it. */
static void
-obj_aout_desc ()
+obj_aout_type (int ignore ATTRIBUTE_UNUSED)
{
- register char *name;
- register char c;
- register char *p;
- register symbolS *symbolP;
- register int temp;
-
- /*
- * Frob invented at RMS' request. Set the n_desc of a symbol.
- */
+ char *name;
+ int c;
+ symbolS *sym;
+
name = input_line_pointer;
c = get_symbol_end ();
- p = input_line_pointer;
- *p = c;
+ sym = symbol_find_or_make (name);
+ *input_line_pointer = c;
SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- *p = 0;
- as_bad ("Expected comma after name \"%s\"", name);
- *p = c;
- ignore_rest_of_line ();
- }
- else
+ if (*input_line_pointer == ',')
{
- input_line_pointer++;
- temp = get_absolute_expression ();
- *p = 0;
- symbolP = symbol_find_or_make (name);
- *p = c;
- S_SET_DESC (symbolP, temp);
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '@')
+ {
+ ++input_line_pointer;
+ if (strncmp (input_line_pointer, "object", 6) == 0)
+ S_SET_OTHER (sym, 1);
+ else if (strncmp (input_line_pointer, "function", 8) == 0)
+ S_SET_OTHER (sym, 2);
+ }
}
- demand_empty_rest_of_line ();
-} /* obj_aout_desc() */
-void
-obj_read_begin_hook ()
-{
- return;
-} /* obj_read_begin_hook() */
+ /* Ignore everything else on the line. */
+ s_ignore (0);
+}
#ifndef BFD_ASSEMBLER
void
-obj_crawl_symbol_chain (headers)
- object_headers *headers;
+obj_crawl_symbol_chain (object_headers *headers)
{
symbolS *symbolP;
symbolS **symbolPP;
int symbol_number = 0;
- /* JF deal with forward references first... */
- for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
- {
- if (symbolP->sy_forward)
- {
- S_SET_VALUE (symbolP, S_GET_VALUE (symbolP)
- + S_GET_VALUE (symbolP->sy_forward)
- + symbolP->sy_forward->sy_frag->fr_address);
-
- symbolP->sy_forward = 0;
- } /* if it has a forward reference */
- } /* walk the symbol chain */
-
tc_crawl_symbol_chain (headers);
- symbolPP = &symbol_rootP; /*->last symbol chain link. */
+ symbolPP = &symbol_rootP; /*->last symbol chain link. */
while ((symbolP = *symbolPP) != NULL)
{
- if (flagseen['R'] && (S_GET_SEGMENT (symbolP) == SEG_DATA))
+ if (symbolP->sy_mri_common)
+ {
+ if (S_IS_EXTERNAL (symbolP))
+ as_bad (_("%s: global symbols not supported in common sections"),
+ S_GET_NAME (symbolP));
+ *symbolPP = symbol_next (symbolP);
+ continue;
+ }
+
+ if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
{
S_SET_SEGMENT (symbolP, SEG_TEXT);
- } /* if pusing data into text */
+ }
- S_SET_VALUE (symbolP, S_GET_VALUE (symbolP) + symbolP->sy_frag->fr_address);
+ resolve_symbol_value (symbolP);
+
+ /* Skip symbols which were equated to undefined or common
+ symbols. Also skip defined uncommon symbols which can
+ be resolved since in this case they should have been
+ resolved to a non-symbolic constant. */
+ if (symbolP->sy_value.X_op == O_symbol
+ && (! S_IS_DEFINED (symbolP)
+ || S_IS_COMMON (symbolP)
+ || symbol_resolved_p (symbolP)))
+ {
+ *symbolPP = symbol_next (symbolP);
+ continue;
+ }
/* OK, here is how we decide which symbols go out into the brave
new symtab. Symbols that do are:
switch was passed to gas.
All other symbols are output. We complain if a deleted
- symbol was marked external. */
-
+ symbol was marked external. */
if (!S_IS_REGISTER (symbolP)
&& (!S_GET_NAME (symbolP)
|| S_IS_DEBUG (symbolP)
-#ifdef TC_I960
- /* FIXME-SOON this ifdef seems highly dubious to me. xoxorich. */
|| !S_IS_DEFINED (symbolP)
|| S_IS_EXTERNAL (symbolP)
-#endif /* TC_I960 */
- || (S_GET_NAME (symbolP)[0] != '\001' && (flagseen['L'] || !S_LOCAL_NAME (symbolP)))))
+ || (S_GET_NAME (symbolP)[0] != '\001'
+ && (flag_keep_locals || !S_LOCAL_NAME (symbolP)))))
{
symbolP->sy_number = symbol_number++;
end of each string */
if (!S_IS_STABD (symbolP))
{
- /* Ordinary case. */
+ /* Ordinary case. */
symbolP->sy_name_offset = string_byte_count;
string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
}
- else /* .Stabd case. */
+ else /* .Stabd case. */
symbolP->sy_name_offset = 0;
- symbolPP = &(symbol_next (symbolP));
+ symbolPP = &symbolP->sy_next;
}
else
{
if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP))
- {
- as_bad ("Local symbol %s never defined.", decode_local_label_name (S_GET_NAME (symbolP)));
- } /* oops. */
+ /* This warning should never get triggered any more.
+ Well, maybe if you're doing twisted things with
+ register names... */
+ as_bad (_("Local symbol %s never defined."),
+ decode_local_label_name (S_GET_NAME (symbolP)));
/* Unhook it from the chain */
*symbolPP = symbol_next (symbolP);
- } /* if this symbol should be in the output */
- } /* for each symbol */
+ }
+ }
H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
+}
- return;
-} /* obj_crawl_symbol_chain() */
-
-/*
- * Find strings by crawling along symbol table chain.
- */
+/* Find strings by crawling along symbol table chain. */
void
-obj_emit_strings (where)
- char **where;
+obj_emit_strings (char **where)
{
symbolS *symbolP;
-#ifdef CROSS_COMPILE
- /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
- md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
- *where += sizeof (string_byte_count);
-#else /* CROSS_COMPILE */
- append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count));
-#endif /* CROSS_COMPILE */
+ md_number_to_chars (*where, string_byte_count, 4);
+ *where += 4;
for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
- {
- if (S_GET_NAME (symbolP))
- append (&next_object_file_charP, S_GET_NAME (symbolP),
- (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
- } /* walk symbol chain */
-
- return;
-} /* obj_emit_strings() */
+ if (S_GET_NAME (symbolP))
+ append (where, S_GET_NAME (symbolP),
+ (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
+}
#ifndef AOUT_VERSION
#define AOUT_VERSION 0
#endif
void
-obj_pre_write_hook (headers)
- object_headers *headers;
+obj_pre_write_hook (object_headers *headers)
{
H_SET_DYNAMIC (headers, 0);
H_SET_VERSION (headers, AOUT_VERSION);
H_SET_MACHTYPE (headers, AOUT_MACHTYPE);
tc_aout_pre_write_hook (headers);
- return;
-} /* obj_pre_write_hook() */
+}
-void
-DEFUN_VOID (s_sect)
+#endif /* ! BFD_ASSEMBLER */
+
+#ifdef BFD_ASSEMBLER
+
+/* Support for an AOUT emulation. */
+
+static void
+aout_pop_insert (void)
{
- /* Strip out the section name */
- char *section_name;
- char *section_name_end;
- char c;
+ pop_insert (aout_pseudo_table);
+}
- unsigned int len;
- unsigned int exp;
- char *save;
+static int
+obj_aout_s_get_other (symbolS *sym)
+{
+ return aout_symbol (symbol_get_bfdsym (sym))->other;
+}
- section_name = input_line_pointer;
- c = get_symbol_end ();
- section_name_end = input_line_pointer;
+static void
+obj_aout_s_set_other (symbolS *sym, int o)
+{
+ aout_symbol (symbol_get_bfdsym (sym))->other = o;
+}
- len = section_name_end - section_name;
- input_line_pointer++;
- save = input_line_pointer;
+static int
+obj_aout_sec_sym_ok_for_reloc (asection *sec ATTRIBUTE_UNUSED)
+{
+ return obj_sec_sym_ok_for_reloc (sec);
+}
- SKIP_WHITESPACE ();
- if (c == ',')
- {
- exp = get_absolute_expression ();
- }
- else if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- exp = get_absolute_expression ();
- }
- else
- {
- input_line_pointer = save;
- exp = 0;
- }
- if (exp >= 1000)
- {
- as_bad ("subsegment index too high");
- }
+static void
+obj_aout_process_stab (segT seg ATTRIBUTE_UNUSED,
+ int w,
+ const char *s,
+ int t,
+ int o,
+ int d)
+{
+ aout_process_stab (w, s, t, o, d);
+}
- if (strcmp (section_name, ".text") == 0)
- {
- subseg_new (SEG_TEXT, (subsegT) exp);
- }
+static int
+obj_aout_s_get_desc (symbolS *sym)
+{
+ return aout_symbol (symbol_get_bfdsym (sym))->desc;
+}
- if (strcmp (section_name, ".data") == 0)
- {
- if (flagseen['R'])
- subseg_new (SEG_TEXT, (subsegT) exp + 1000);
- else
- subseg_new (SEG_DATA, (subsegT) exp);
- }
+static void
+obj_aout_s_set_desc (symbolS *sym, int d)
+{
+ aout_symbol (symbol_get_bfdsym (sym))->desc = d;
+}
- *section_name_end = c;
+static int
+obj_aout_s_get_type (symbolS *sym)
+{
+ return aout_symbol (symbol_get_bfdsym (sym))->type;
}
-#endif /* ! BFD_ASSEMBLER */
+static void
+obj_aout_s_set_type (symbolS *sym, int t)
+{
+ aout_symbol (symbol_get_bfdsym (sym))->type = t;
+}
+
+static int
+obj_aout_separate_stab_sections (void)
+{
+ return 0;
+}
+
+/* When changed, make sure these table entries match the single-format
+ definitions in obj-aout.h. */
+
+const struct format_ops aout_format_ops =
+{
+ bfd_target_aout_flavour,
+ 1, /* dfl_leading_underscore. */
+ 0, /* emit_section_symbols. */
+ 0, /* begin. */
+ 0, /* app_file. */
+ obj_aout_frob_symbol,
+ 0, /* frob_file. */
+ 0, /* frob_file_before_adjust. */
+ obj_aout_frob_file_before_fix,
+ 0, /* frob_file_after_relocs. */
+ 0, /* s_get_size. */
+ 0, /* s_set_size. */
+ 0, /* s_get_align. */
+ 0, /* s_set_align. */
+ obj_aout_s_get_other,
+ obj_aout_s_set_other,
+ obj_aout_s_get_desc,
+ obj_aout_s_set_desc,
+ obj_aout_s_get_type,
+ obj_aout_s_set_type,
+ 0, /* copy_symbol_attributes. */
+ 0, /* generate_asm_lineno. */
+ obj_aout_process_stab,
+ obj_aout_separate_stab_sections,
+ 0, /* init_stab_section. */
+ obj_aout_sec_sym_ok_for_reloc,
+ aout_pop_insert,
+ 0, /* ecoff_set_ext. */
+ 0, /* read_begin_hook. */
+ 0 /* symbol_new_hook. */
+};
+#endif /* BFD_ASSEMBLER */
+
+const pseudo_typeS aout_pseudo_table[] =
+{
+ {"line", obj_aout_line, 0}, /* Source code line number. */
+ {"ln", obj_aout_line, 0}, /* COFF line number that we use anyway. */
+
+ {"weak", obj_aout_weak, 0}, /* Mark symbol as weak. */
+
+ {"type", obj_aout_type, 0},
+
+ /* coff debug pseudos (ignored) */
+ {"def", s_ignore, 0},
+ {"dim", s_ignore, 0},
+ {"endef", s_ignore, 0},
+ {"ident", s_ignore, 0},
+ {"line", s_ignore, 0},
+ {"ln", s_ignore, 0},
+ {"scl", s_ignore, 0},
+ {"size", s_ignore, 0},
+ {"tag", s_ignore, 0},
+ {"val", s_ignore, 0},
+ {"version", s_ignore, 0},
-/* end of obj-aout.c */
+ {"optim", s_ignore, 0}, /* For sun386i cc (?). */
+
+ /* other stuff */
+ {"ABORT", s_abort, 0},
+
+ {NULL, NULL, 0}
+};
projects / thirdparty / binutils-gdb.git / blobdiff