/* b.out object file format
- Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
+ Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 2000
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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. */
+ 02111-1307, USA. */
#include "as.h"
#include "obstack.h"
-const short /* in: segT out: N_TYPE bits */
- seg_N_TYPE[] =
+
+/* In: segT Out: N_TYPE bits */
+const short seg_N_TYPE[] =
{
N_ABS,
N_TEXT,
N_DATA,
N_BSS,
- N_UNDF, /* unknown */
- N_UNDF, /* error */
- N_UNDF, /* expression */
- 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 */
+{ /* N_TYPE == 0x1E = 32-2 */
+ SEG_UNKNOWN, /* N_UNDF == 0 */
SEG_GOOF,
- SEG_ABSOLUTE, /* N_ABS == 2 */
+ SEG_ABSOLUTE, /* N_ABS == 2 */
SEG_GOOF,
- SEG_TEXT, /* N_TEXT == 4 */
+ SEG_TEXT, /* N_TEXT == 4 */
SEG_GOOF,
- SEG_DATA, /* N_DATA == 6 */
+ SEG_DATA, /* N_DATA == 6 */
SEG_GOOF,
- SEG_BSS, /* N_BSS == 8 */
+ 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_REGISTER, /* dummy N_REGISTER for regs = 30 */
SEG_GOOF,
};
const pseudo_typeS obj_pseudo_table[] =
{
- {"line", obj_bout_line, 0}, /* source code line number */
+ {"line", obj_bout_line, 0}, /* Source code line number. */
-/* coff debugging directives. Currently ignored silently */
+/* coff debugging directives. Currently ignored silently. */
{"def", s_ignore, 0},
{"dim", s_ignore, 0},
{"endef", s_ignore, 0},
{"ABORT", s_ignore, 0},
{"ident", s_ignore, 0},
- {NULL} /* end sentinel */
-}; /* obj_pseudo_table */
+ {NULL} /* End sentinel. */
+};
+
+/* Relocation. */
-/* 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. */
+ fixS *fixP; /* Fixup chain for this segment. */
relax_addressT segment_address_in_file;
{
for (; fixP; fixP = fixP->fx_next)
tc_bout_fix_to_chars (*where, fixP, segment_address_in_file);
*where += sizeof (struct relocation_info);
- } /* if there's a symbol */
- } /* for each fixup */
+ } /* if there's a symbol */
+ } /* for each fixup */
+}
-} /* emit_relocations() */
+/* Aout file generation & utilities . */
-/* Aout file generation & utilities */
+/* Convert a lvalue to machine dependent data. */
-/* Convert a lvalue to machine dependent data */
void
obj_header_append (where, headers)
char **where;
object_headers *headers;
{
- /* Always leave in host byte order */
+ /* Always leave in host byte order. */
headers->header.a_talign = section_alignment[SEG_TEXT];
+ /* Force to at least 2. */
if (headers->header.a_talign < 2)
{
headers->header.a_talign = 2;
- } /* force to at least 2 */
+ }
headers->header.a_dalign = section_alignment[SEG_DATA];
headers->header.a_balign = section_alignment[SEG_BSS];
headers->header.a_tload = 0;
- headers->header.a_dload = md_section_align (SEG_DATA, H_GET_TEXT_SIZE (headers));
+ headers->header.a_dload =
+ md_section_align (SEG_DATA, H_GET_TEXT_SIZE (headers));
headers->header.a_relaxable = linkrelax;
#else /* ! CROSS_COMPILE */
append (where, (char *) &headers->header, sizeof (headers->header));
#endif /* ! CROSS_COMPILE */
-} /* a_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));
+ 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));
-} /* obj_symbol_to_chars() */
+}
void
obj_emit_symbols (where, symbol_rootP)
{
symbolS *symbolP;
- /*
- * Emit all symbols left in the symbol chain.
- */
+ /* 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. */
+ /* Used to save the offset of the name. It is used to point 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);
obj_symbol_to_chars (where, symbolP);
S_SET_NAME (symbolP, temp);
}
-} /* emit_symbols() */
+}
void
obj_symbol_new_hook (symbolP)
obj_bout_line (ignore)
int ignore;
{
- /* Assume delimiter is part of expression. */
- /* BSD4.2 as fails with delightful bug, so we */
- /* are not being incompatible here. */
+ /* 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_bout_line() */
+}
void
obj_read_begin_hook ()
tc_crawl_symbol_chain (headers);
- symbolPP = &symbol_rootP; /*->last symbol chain link. */
+ symbolPP = &symbol_rootP; /* -> last symbol chain link. */
while ((symbolP = *symbolPP) != NULL)
{
if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
{
S_SET_SEGMENT (symbolP, SEG_TEXT);
- } /* if pusing data into text */
+ } /* if pusing data into text */
resolve_symbol_value (symbolP, 1);
/* 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. */
+ All other symbols are output. We complain if a deleted
+ symbol was marked external. */
if (1
&& !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. */
+ /* 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' && (flag_keep_locals || !S_LOCAL_NAME (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 */
+ /* The + 1 after strlen account for the \0 at the 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));
}
{
if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP))
{
- as_bad (_("Local symbol %s never defined"), S_GET_NAME (symbolP));
- } /* oops. */
+ as_bad (_("Local symbol %s never defined"),
+ S_GET_NAME (symbolP));
+ } /* Oops. */
- /* Unhook it from the chain */
+ /* Unhook it from the chain. */
*symbolPP = symbol_next (symbolP);
- } /* if this symbol should be in the output */
- } /* for each symbol */
+ } /* 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.
- */
+/* Find strings by crawling along symbol table chain. */
void
obj_emit_strings (where)
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));
+ 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 (where, S_GET_NAME (symbolP), (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
- } /* walk symbol chain */
+ append (where, S_GET_NAME (symbolP),
+ (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
+ } /* Walk symbol chain. */
}
-
-/* end of obj-bout.c */
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