/* a.out object file format
- Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 1,
+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
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. */
-
-/* $Id$ */
+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. */
#include "as.h"
-
+#ifdef BFD_ASSEMBLER
+#undef NO_RELOC
+#include "aout/aout64.h"
+#endif
#include "obstack.h"
- /* in: segT out: N_TYPE bits */
-const short seg_N_TYPE[] = {
+#ifndef BFD_ASSEMBLER
+/* 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] = { /* N_TYPE == 0x1E = 32-2 */
- SEG_UNKNOWN, /* N_UNDF == 0 */
- SEG_GOOF,
- SEG_ABSOLUTE, /* N_ABS == 2 */
- SEG_GOOF,
- SEG_TEXT, /* N_TEXT == 4 */
- SEG_GOOF,
- SEG_DATA, /* N_DATA == 6 */
- SEG_GOOF,
- SEG_BSS, /* N_BSS == 8 */
- 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_GOOF,
- SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
- SEG_GOOF,
+const segT N_TYPE_seg[N_TYPE + 2] =
+{ /* N_TYPE == 0x1E = 32-2 */
+ SEG_UNKNOWN, /* N_UNDF == 0 */
+ SEG_GOOF,
+ SEG_ABSOLUTE, /* N_ABS == 2 */
+ SEG_GOOF,
+ SEG_TEXT, /* N_TEXT == 4 */
+ SEG_GOOF,
+ SEG_DATA, /* N_DATA == 6 */
+ SEG_GOOF,
+ SEG_BSS, /* N_BSS == 8 */
+ 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_GOOF,
+ SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
+ SEG_GOOF,
};
+#endif
-#ifdef __STDC__
-static void obj_aout_stab(int what);
-static void obj_aout_line(void);
-static void obj_aout_desc(void);
-#else /* __STDC__ */
-static void obj_aout_desc();
-static void obj_aout_stab();
-static void obj_aout_line();
-#endif /* __STDC__ */
+static void obj_aout_line PARAMS ((int));
+static void obj_aout_weak PARAMS ((int));
+static void obj_aout_type PARAMS ((int));
-const pseudo_typeS obj_pseudo_table[] = {
- { "line", obj_aout_line, 0 }, /* source code line number */
- { "ln", obj_aout_line, 0 }, /* source code line number */
- { "desc", obj_aout_desc, 0 }, /* def */
- { "stabd", obj_aout_stab, 'd' }, /* stabs */
- { "stabn", obj_aout_stab, 'n' }, /* stabs */
- { "stabs", obj_aout_stab, 's' }, /* stabs */
+const pseudo_typeS obj_pseudo_table[] =
+{
+ {"line", obj_aout_line, 0}, /* source code line number */
+ {"ln", obj_aout_line, 0}, /* coff line number that we use anyway */
- { NULL} /* end sentinel */
-}; /* obj_pseudo_table */
+ {"weak", obj_aout_weak, 0}, /* mark symbol as weak. */
+ {"type", obj_aout_type, 0},
-/* Relocation. */
+ /* 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},
-/*
- * In: length of relocation (or of address) in chars: 1, 2 or 4.
- * Out: GNU LD relocation length code: 0, 1, or 2.
- */
+ {"optim", s_ignore, 0}, /* For sun386i cc (?) */
-static unsigned char
-nbytes_r_length [] = {
- 42, 0, 1, 42, 2
- };
+ /* other stuff */
+ {"ABORT", s_abort, 0},
-/*
- * 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;
-{
- struct reloc_info_generic ri;
- register symbolS *symbolP;
+ {NULL} /* end sentinel */
+}; /* obj_pseudo_table */
- /* If a machine dependent emitter is needed, call it instead. */
- if (md_emit_relocations) {
- (*md_emit_relocations) (fixP, segment_address_in_file);
- return;
- }
- /* JF this is for paranoia */
- bzero((char *)&ri,sizeof(ri));
- for (; fixP; fixP = fixP->fx_next) {
- if ((symbolP = fixP->fx_addsy) != 0) {
- ri.r_bsr = fixP->fx_bsr;
- ri.r_disp = fixP->fx_im_disp;
- ri.r_callj = fixP->fx_callj;
- ri.r_length = nbytes_r_length [fixP->fx_size];
- ri.r_pcrel = fixP->fx_pcrel;
- ri.r_address = fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file;
-
- if (S_GET_TYPE(symbolP) == N_UNDF) {
- ri.r_extern = 1;
- ri.r_symbolnum = symbolP->sy_number;
- } else {
- ri.r_extern = 0;
- ri.r_symbolnum = S_GET_TYPE(symbolP);
- }
-
- /* Output the relocation information in machine-dependent form. */
- md_ri_to_chars(*where, &ri);
- *where += md_reloc_size;
- } /* if there is an add symbol */
- } /* for each fix */
-
- return;
-} /* emit_relocations() */
+#ifdef BFD_ASSEMBLER
-/* Aout file generation & utilities */
-void obj_header_append(where, headers)
-char **where;
-object_headers *headers;
+void
+obj_aout_frob_symbol (sym, punt)
+ symbolS *sym;
+ int *punt;
{
- tc_headers_hook(headers);
-
-#ifdef CROSS_ASSEMBLE
- 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);
-#ifdef EXEC_MACHINE_TYPE
- md_number_to_chars(*where, headers->header.a_machtype, sizeof(headers->header.a_machtype));
- *where += sizeof(headers->header.a_machtype);
-#endif /* EXEC_MACHINE_TYPE */
-#ifdef EXEC_VERSION
- md_number_to_chars(*where, headers->header.a_version, sizeof(headers->header.a_version));
- *where += sizeof(headers->header.a_version);
-#endif /* EXEC_VERSION */
-
-#else /* CROSS_ASSEMBLE */
-
- append(where, (char *) &headers->header, sizeof(headers->header));
-#endif /* CROSS_ASSEMBLE */
+ flagword flags;
+ asection *sec;
+ int desc, type, other;
+
+ flags = symbol_get_bfdsym (sym)->flags;
+ desc = S_GET_DESC (sym);
+ type = S_GET_TYPE (sym);
+ other = S_GET_OTHER (sym);
+ sec = S_GET_SEGMENT (sym);
+
+ /* Only frob simple symbols this way right now. */
+ if (! (type & ~ (N_TYPE | N_EXT)))
+ {
+ 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;
-} /* obj_append_header() */
+ if (flags & BSF_EXPORT)
+ 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
+ {
+ symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
+ }
-void obj_symbol_to_chars(where, symbolP)
-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 *)&(S_GET_VALUE(symbolP)), S_GET_VALUE(symbolP), sizeof(S_GET_VALUE(symbolP)));
+ S_SET_TYPE (sym, type);
- append(where, (char *)&symbolP->sy_symbol, sizeof(obj_symbol_type));
-} /* obj_symbol_to_chars() */
+ /* Double check weak symbols. */
+ if (S_IS_WEAK (sym))
+ {
+ if (S_IS_COMMON (sym))
+ as_bad (_("Symbol `%s' can not be both weak and common"),
+ S_GET_NAME (sym));
+ }
+}
-void obj_emit_symbols(where, symbol_rootP)
-char **where;
-symbolS *symbol_rootP;
+void
+obj_aout_frob_file ()
{
- symbolS * symbolP;
+ /* 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;
+ 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 == true);
+}
+
+#else /* ! BFD_ASSEMBLER */
- /*
- * Emit all symbols left in the symbol chain.
+/* Relocation. */
+
+/*
+ * emit_relocations()
+ *
+ * Crawl along a fixS chain. Emit the segment's relocations.
*/
- 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;
+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;
+{
+ for (; fixP; fixP = fixP->fx_next)
+ 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 */
+void
+obj_header_append (where, headers)
+ char **where;
+ object_headers *headers;
+{
+ tc_headers_hook (headers);
+
+#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 */
+
+}
+#endif /* ! defined (obj_header_append) */
+
+void
+obj_symbol_to_chars (where, symbolP)
+ 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));
- temp = S_GET_NAME(symbolP);
- S_SET_OFFSET(symbolP, symbolP->sy_name_offset);
+ append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
+}
- /* 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);
+void
+obj_emit_symbols (where, symbol_rootP)
+ char **where;
+ symbolS *symbol_rootP;
+{
+ symbolS *symbolP;
+
+ /* 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;
+
+ 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. */
+ 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);
+ obj_symbol_to_chars (where, symbolP);
+ S_SET_NAME (symbolP, temp);
}
-} /* emit_symbols() */
+}
+
+#endif /* ! BFD_ASSEMBLER */
-void obj_symbol_new_hook(symbolP)
-symbolS *symbolP;
+static void
+obj_aout_line (ignore)
+ int ignore;
{
- S_SET_OTHER(symbolP, 0);
- S_SET_DESC(symbolP, 0);
- return;
-} /* obj_symbol_new_hook() */
+ /* Assume delimiter is part of expression.
+ BSD4.2 as fails with delightful bug, so we
+ are not being incompatible here. */
+ new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
+ demand_empty_rest_of_line ();
+} /* obj_aout_line() */
+
+/* Handle .weak. This is a GNU extension. */
+
+static void
+obj_aout_weak (ignore)
+ int ignore;
+{
+ char *name;
+ int c;
+ symbolS *symbolP;
+
+ do
+ {
+ 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 == ',')
+ {
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '\n')
+ c = '\n';
+ }
+ }
+ while (c == ',');
+ demand_empty_rest_of_line ();
+}
+
+/* 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 ogas ignored the .type pseudo-op, so we also ignore it if
+ we can't parse it. */
+
+static void
+obj_aout_type (ignore)
+ int ignore;
+{
+ char *name;
+ int c;
+ symbolS *sym;
+
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ sym = symbol_find (name);
+ *input_line_pointer = c;
+ if (sym != NULL)
+ {
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == ',')
+ {
+ ++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);
+ }
+ }
+ }
-static void obj_aout_line() {
- /* Assume delimiter is part of expression. */
- /* BSD4.2 as fails with delightful bug, so we */
- /* are not being incompatible here. */
- new_logical_line((char *)NULL, (int)(get_absolute_expression()));
- demand_empty_rest_of_line();
-} /* obj_aout_line() */
+ /* Ignore everything else on the line. */
+ s_ignore (0);
+}
-/*
- * 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;
+void
+obj_read_begin_hook ()
{
- 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 = "";
+#ifndef BFD_ASSEMBLER
-/*
- * Input_line_pointer->after ','. String->symbol name.
- */
- if (! goof) {
- symbolP = symbol_new(string,
- SEG_UNKNOWN,
- 0,
- (struct frag *)0);
- switch (what) {
- case 'd':
- S_SET_NAME(symbolP, NULL); /* .stabd feature. */
- S_SET_VALUE(symbolP, 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) == ',')
- symbolP->sy_symbol.n_type = saved_type = longint;
- else {
- as_bad("I want a comma after the n_type expression");
- goof = 1;
- input_line_pointer --; /* Backup over a non-',' char. */
- }
+void
+obj_crawl_symbol_chain (headers)
+ object_headers *headers;
+{
+ symbolS *symbolP;
+ symbolS **symbolPP;
+ int symbol_number = 0;
+
+ tc_crawl_symbol_chain (headers);
+
+ symbolPP = &symbol_rootP; /*->last symbol chain link. */
+ while ((symbolP = *symbolPP) != NULL)
+ {
+ 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 (!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. */
- }
- }
+ if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
+ {
+ S_SET_SEGMENT (symbolP, SEG_TEXT);
+ } /* if pusing data into text */
- 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++;
- }
- }
- }
+ resolve_symbol_value (symbolP, 1);
- if ((!goof) && (what=='s' || what=='n')) {
- pseudo_set(symbolP);
- symbolP->sy_symbol.n_type = saved_type;
+ /* Skip symbols which were equated to undefined or common
+ symbols. */
+ if (symbolP->sy_value.X_op == O_symbol
+ && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
+ {
+ *symbolPP = symbol_next (symbolP);
+ continue;
}
- if (goof)
- ignore_rest_of_line();
- else
- demand_empty_rest_of_line ();
-} /* obj_aout_stab() */
-
-static void obj_aout_desc() {
- 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.
- */
- name = input_line_pointer;
- c = get_symbol_end();
- p = input_line_pointer;
- * p = c;
- SKIP_WHITESPACE();
- if (*input_line_pointer != ',') {
- *p = 0;
- as_bad("Expected comma after name \"%s\"", name);
- *p = c;
- ignore_rest_of_line();
- } else {
- input_line_pointer ++;
- temp = get_absolute_expression();
- *p = 0;
- symbolP = symbol_find_or_make(name);
- *p = c;
- S_SET_DESC(symbolP,temp);
- }
- demand_empty_rest_of_line();
-} /* obj_aout_desc() */
+ /* OK, here is how we decide which symbols go out into the brave
+ new symtab. Symbols that do are:
-void obj_read_begin_hook() {
- return;
-} /* obj_read_begin_hook() */
+ * symbols with no name (stabd's?)
+ * symbols with debug info in their N_TYPE
-void obj_crawl_symbol_chain(headers)
-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. */
- while ((symbolP = *symbolPP) != NULL) {
- if (flagseen['R'] && (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);
-
- /* OK, here is how we decide which symbols go out into the
- brave new symtab. Symbols that do are:
-
- * symbols with no name (stabd's?)
- * symbols with debug info in their N_TYPE
-
- Symbols that don't are:
- * symbols that are registers
- * symbols with \1 as their 3rd character (numeric labels)
- * "local labels" as defined by S_LOCAL_NAME(name)
- if the -L switch was passed to gas.
-
- All other symbols are output. We complain if a deleted
- 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))))) {
- symbolP->sy_number = symbol_number++;
-
- /* The + 1 after strlen account for the \0 at the
- end of each string */
- if (!S_IS_STABD(symbolP)) {
- /* Ordinary case. */
- symbolP->sy_name_offset = string_byte_count;
- string_byte_count += strlen(S_GET_NAME(symbolP)) + 1;
- }
- else /* .Stabd case. */
- symbolP->sy_name_offset = 0;
- symbolPP = &(symbol_next(symbolP));
- } else {
- if (S_IS_EXTERNAL(symbolP) || !S_IS_DEFINED(symbolP)) {
- as_bad("Local symbol %s never defined", S_GET_NAME(symbolP));
- } /* oops. */
-
- /* 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);
+ Symbols that don't are:
+ * symbols that are registers
+ * symbols with \1 as their 3rd character (numeric labels)
+ * "local labels" as defined by S_LOCAL_NAME(name) if the -L
+ switch was passed to gas.
- return;
-} /* obj_crawl_symbol_chain() */
+ All other symbols are output. We complain if a deleted
+ symbol was marked external. */
+
+
+ if (!S_IS_REGISTER (symbolP)
+ && (!S_GET_NAME (symbolP)
+ || S_IS_DEBUG (symbolP)
+ || !S_IS_DEFINED (symbolP)
+ || S_IS_EXTERNAL (symbolP)
+ || (S_GET_NAME (symbolP)[0] != '\001'
+ && (flag_keep_locals || !S_LOCAL_NAME (symbolP)))))
+ {
+ symbolP->sy_number = symbol_number++;
+
+ /* The + 1 after strlen account for the \0 at the
+ end of each string */
+ if (!S_IS_STABD (symbolP))
+ {
+ /* Ordinary case. */
+ symbolP->sy_name_offset = string_byte_count;
+ string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
+ }
+ else /* .Stabd case. */
+ symbolP->sy_name_offset = 0;
+ symbolPP = &symbolP->sy_next;
+ }
+ else
+ {
+ if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP))
+ /* 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)));
+ } /* oops. */
+
+ /* 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);
+}
/*
* Find strings by crawling along symbol table chain.
*/
-void obj_emit_strings(where)
-char **where;
+void
+obj_emit_strings (where)
+ 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 */
+
+ 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 */
+}
+
+#ifndef AOUT_VERSION
+#define AOUT_VERSION 0
+#endif
+
+void
+obj_pre_write_hook (headers)
+ object_headers *headers;
{
- symbolS *symbolP;
-
-#ifdef CROSS_ASSEMBLE
- /* 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_ASSEMBLE */
- append (where, (char *)&string_byte_count, (unsigned long)sizeof(string_byte_count));
-#endif /* CROSS_ASSEMBLE */
-
- 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 */
+ H_SET_DYNAMIC (headers, 0);
+ H_SET_VERSION (headers, AOUT_VERSION);
+ H_SET_MACHTYPE (headers, AOUT_MACHTYPE);
+ tc_aout_pre_write_hook (headers);
+}
+
+void
+DEFUN_VOID (s_sect)
+{
+ /* Strip out the section name */
+ char *section_name;
+ char *section_name_end;
+ char c;
+
+ unsigned int len;
+ unsigned int exp;
+ char *save;
+
+ section_name = input_line_pointer;
+ c = get_symbol_end ();
+ section_name_end = input_line_pointer;
+
+ len = section_name_end - section_name;
+ input_line_pointer++;
+ save = input_line_pointer;
+
+ 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"));
+ }
- return;
-} /* obj_emit_strings() */
+ if (strcmp (section_name, ".text") == 0)
+ {
+ subseg_set (SEG_TEXT, (subsegT) exp);
+ }
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+ if (strcmp (section_name, ".data") == 0)
+ {
+ if (flag_readonly_data_in_text)
+ subseg_set (SEG_TEXT, (subsegT) exp + 1000);
+ else
+ subseg_set (SEG_DATA, (subsegT) exp);
+ }
+
+ *section_name_end = c;
+}
+
+#endif /* ! BFD_ASSEMBLER */
/* end of obj-aout.c */
projects / binutils-gdb.git / blobdiff