/* symbols.c -symbol table-
-
- Copyright (C) 1987, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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. */
+ 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 DEBUG_SYMS / * to debug symbol list maintenance */
#include <ctype.h>
#include "obstack.h" /* For "symbols.h" */
#include "subsegs.h"
+/* This is non-zero if symbols are case sensitive, which is the
+ default. */
+int symbols_case_sensitive = 1;
+
#ifndef WORKING_DOT_WORD
extern int new_broken_words;
#endif
-#ifdef VMS
-extern char const_flag;
-#endif
-static
-struct hash_control *
- sy_hash; /* symbol-name => struct symbol pointer */
+/* symbol-name => struct symbol pointer */
+static struct hash_control *sy_hash;
/* Below are commented in "symbols.h". */
-unsigned int local_bss_counter;
symbolS *symbol_rootP;
symbolS *symbol_lastP;
symbolS abs_symbol;
-symbolS *dot_text_symbol;
-symbolS *dot_data_symbol;
-symbolS *dot_bss_symbol;
+#ifdef DEBUG_SYMS
+#define debug_verify_symchain verify_symbol_chain
+#else
+#define debug_verify_symchain(root, last) ((void) 0)
+#endif
struct obstack notes;
-#if __STDC__ == 1
-static void fb_label_init (void);
-#else /* not __STDC__ */
-static void fb_label_init ();
-#endif /* not __STDC__ */
+static void fb_label_init PARAMS ((void));
+static long dollar_label_instance PARAMS ((long));
+static long fb_label_instance PARAMS ((long));
-void
-symbol_begin ()
+static void print_binary PARAMS ((FILE *, const char *, expressionS *));
+
+/* symbol_new()
+
+ Return a pointer to a new symbol. Die if we can't make a new
+ symbol. Fill in the symbol's values. Add symbol to end of symbol
+ chain.
+
+ This function should be called in the general case of creating a
+ symbol. However, if the output file symbol table has already been
+ set, and you are certain that this symbol won't be wanted in the
+ output file, you can call symbol_create. */
+
+symbolS *
+symbol_new (name, segment, valu, frag)
+ const char *name;
+ segT segment;
+ valueT valu;
+ fragS *frag;
{
- symbol_lastP = NULL;
- symbol_rootP = NULL; /* In case we have 0 symbols (!!) */
- sy_hash = hash_new ();
- memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol));
- S_SET_SEGMENT (&abs_symbol, SEG_ABSOLUTE); /* Can't initialise a union. Sigh. */
- local_bss_counter = 0;
-#ifdef LOCAL_LABELS_FB
- fb_label_init ();
-#endif /* LOCAL_LABELS_FB */
-}
+ symbolS *symbolP = symbol_create (name, segment, valu, frag);
-/*
- * symbol_new()
- *
- * Return a pointer to a new symbol.
- * Die if we can't make a new symbol.
- * Fill in the symbol's values.
- * Add symbol to end of symbol chain.
- *
- *
- * Please always call this to create a new symbol.
- *
- * Changes since 1985: Symbol names may not contain '\0'. Sigh.
- * 2nd argument is now a SEG rather than a TYPE. The mapping between
- * segments and types is mostly encapsulated herein (actually, we inherit it
- * from macros in struc-symbol.h).
- */
+ /*
+ * Link to end of symbol chain.
+ */
+#ifdef BFD_ASSEMBLER
+ {
+ extern int symbol_table_frozen;
+ if (symbol_table_frozen)
+ abort ();
+ }
+#endif
+ symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP);
+
+ return symbolP;
+}
symbolS *
-symbol_new (name, segment, value, frag)
- char *name; /* It is copied, the caller can destroy/modify */
+symbol_create (name, segment, valu, frag)
+ const char *name; /* It is copied, the caller can destroy/modify */
segT segment; /* Segment identifier (SEG_<something>) */
- long value; /* Symbol value */
+ valueT valu; /* Symbol value */
fragS *frag; /* Associated fragment */
{
unsigned int name_length;
name_length = strlen (name) + 1; /* +1 for \0 */
obstack_grow (¬es, name, name_length);
preserved_copy_of_name = obstack_finish (¬es);
+#ifdef STRIP_UNDERSCORE
+ if (preserved_copy_of_name[0] == '_')
+ preserved_copy_of_name++;
+#endif
+
+#ifdef tc_canonicalize_symbol_name
+ preserved_copy_of_name =
+ tc_canonicalize_symbol_name (preserved_copy_of_name);
+#endif
+
+ if (! symbols_case_sensitive)
+ {
+ unsigned char *s;
+
+ for (s = (unsigned char *) preserved_copy_of_name; *s != '\0'; s++)
+ if (islower (*s))
+ *s = toupper (*s);
+ }
+
symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS));
/* symbol must be born in some fixed state. This seems as good as any. */
memset (symbolP, 0, sizeof (symbolS));
-#ifdef STRIP_UNDERSCORE
- S_SET_NAME (symbolP, (*preserved_copy_of_name == '_'
- ? preserved_copy_of_name + 1
- : preserved_copy_of_name));
-#else /* STRIP_UNDERSCORE */
+#ifdef BFD_ASSEMBLER
+ symbolP->bsym = bfd_make_empty_symbol (stdoutput);
+ if (symbolP->bsym == NULL)
+ as_perror ("%s", "bfd_make_empty_symbol");
+ symbolP->bsym->udata.p = (PTR) symbolP;
+#endif
S_SET_NAME (symbolP, preserved_copy_of_name);
-#endif /* STRIP_UNDERSCORE */
S_SET_SEGMENT (symbolP, segment);
- S_SET_VALUE (symbolP, value);
- /* symbol_clear_list_pointers(symbolP); uneeded if symbol is born zeroed. */
+ S_SET_VALUE (symbolP, valu);
+ symbol_clear_list_pointers (symbolP);
symbolP->sy_frag = frag;
- /* krm: uneeded if symbol is born zeroed.
- symbolP->sy_forward = NULL; *//* JF */
+#ifndef BFD_ASSEMBLER
symbolP->sy_number = ~0;
- symbolP->sy_name_offset = ~0;
-
- /*
- * Link to end of symbol chain.
- */
- symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP);
+ symbolP->sy_name_offset = (unsigned int) ~0;
+#endif
obj_symbol_new_hook (symbolP);
-#ifdef DEBUG
- /* verify_symbol_chain(symbol_rootP, symbol_lastP); */
-#endif /* DEBUG */
+#ifdef tc_symbol_new_hook
+ tc_symbol_new_hook (symbolP);
+#endif
- return (symbolP);
-} /* symbol_new() */
+ return symbolP;
+}
\f
/*
* Gripes if we are redefining a symbol incompatibly (and ignores it).
*
*/
-void
+symbolS *
colon (sym_name) /* just seen "x:" - rattle symbols & frags */
- register char *sym_name; /* symbol name, as a cannonical string */
+ const char *sym_name; /* symbol name, as a cannonical string */
/* We copy this string: OK to alter later. */
{
register symbolS *symbolP; /* symbol we are working with */
-#ifdef LOCAL_LABELS_DOLLAR
- /* Sun local labels go out of scope whenever a non-local symbol is defined. */
+ /* Sun local labels go out of scope whenever a non-local symbol is
+ defined. */
+ if (LOCAL_LABELS_DOLLAR)
+ {
+ int local;
- if (*sym_name != 'L')
- dollar_label_clear ();
-#endif /* LOCAL_LABELS_DOLLAR */
+#ifdef BFD_ASSEMBLER
+ local = bfd_is_local_label_name (stdoutput, sym_name);
+#else
+ local = LOCAL_LABEL (sym_name);
+#endif
+
+ if (! local)
+ dollar_label_clear ();
+ }
#ifndef WORKING_DOT_WORD
if (new_broken_words)
fragS *frag_tmp;
char *frag_opcode;
- extern md_short_jump_size;
- extern md_long_jump_size;
- possible_bytes = md_short_jump_size + new_broken_words * md_long_jump_size;
+ extern const int md_short_jump_size;
+ extern const int md_long_jump_size;
+ possible_bytes = (md_short_jump_size
+ + new_broken_words * md_long_jump_size);
frag_tmp = frag_now;
frag_opcode = frag_var (rs_broken_word,
possible_bytes,
(relax_substateT) 0,
(symbolS *) broken_words,
- 0L,
+ (offsetT) 0,
NULL);
/* We want to store the pointer to where to insert the jump table in the
- fr_opcode of the rs_broken_word frag. This requires a little hackery */
- while (frag_tmp && (frag_tmp->fr_type != rs_broken_word || frag_tmp->fr_opcode))
+ fr_opcode of the rs_broken_word frag. This requires a little
+ hackery. */
+ while (frag_tmp
+ && (frag_tmp->fr_type != rs_broken_word
+ || frag_tmp->fr_opcode))
frag_tmp = frag_tmp->fr_next;
know (frag_tmp);
frag_tmp->fr_opcode = frag_opcode;
if ((symbolP = symbol_find (sym_name)) != 0)
{
-#ifdef VMS
- /*
- * If the new symbol is .comm AND it has a size of zero,
- * we ignore it (i.e. the old symbol overrides it)
- */
- if ((SEGMENT_TO_SYMBOL_TYPE ((int) now_seg) == (N_UNDF | N_EXT)) &&
- ((obstack_next_free (&frags) - frag_now->fr_literal) == 0))
- return;
- /*
- * If the old symbol is .comm and it has a size of zero,
- * we override it with the new symbol value.
- */
- if ((symbolP->sy_type == (N_UNDF | N_EXT))
- && (S_GET_VALUE (symbolP) == 0))
- {
- symbolP->sy_frag = frag_now;
- symbolP->sy_other = const_flag;
- S_SET_VALUE (symbolP, obstack_next_free (&frags) - frag_now->fr_literal);
- symbolP->sy_type |= SEGMENT_TO_SYMBOL_TYPE ((int) now_seg); /* keep N_EXT bit */
- return;
- }
-#endif /* VMS */
+#ifdef RESOLVE_SYMBOL_REDEFINITION
+ if (RESOLVE_SYMBOL_REDEFINITION (symbolP))
+ return symbolP;
+#endif
/*
- * Now check for undefined symbols
- */
- if (!S_IS_DEFINED (symbolP))
+ * Now check for undefined symbols
+ */
+ if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
{
if (S_GET_VALUE (symbolP) == 0)
{
symbolP->sy_frag = frag_now;
-#ifdef VMS
- symbolP->sy_other = const_flag;
+#ifdef OBJ_VMS
+ S_SET_OTHER(symbolP, const_flag);
#endif
- S_SET_VALUE (symbolP, obstack_next_free (&frags) - frag_now->fr_literal);
+ S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
S_SET_SEGMENT (symbolP, now_seg);
#ifdef N_UNDF
know (N_UNDF == 0);
else
{
/*
- * There are still several cases to check:
- * A .comm/.lcomm symbol being redefined as
- * initialized data is OK
- * A .comm/.lcomm symbol being redefined with
- * a larger size is also OK
- *
- * This only used to be allowed on VMS gas, but Sun cc
- * on the sparc also depends on it.
- */
- /* char New_Type = SEGMENT_TO_SYMBOL_TYPE((int) now_seg); */
-#ifdef MANY_SEGMENTS
-#define SEG_BSS SEG_E2
-#define SEG_DATA SEG_E1
-#endif
-
- if (((!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP) && S_IS_EXTERNAL (symbolP))
- || (S_GET_SEGMENT (symbolP) == SEG_BSS))
- && ((now_seg == SEG_DATA)
- || (now_seg == S_GET_SEGMENT (symbolP))))
+ * There are still several cases to check:
+ * A .comm/.lcomm symbol being redefined as
+ * initialized data is OK
+ * A .comm/.lcomm symbol being redefined with
+ * a larger size is also OK
+ *
+ * This only used to be allowed on VMS gas, but Sun cc
+ * on the sparc also depends on it.
+ */
+
+ if (((!S_IS_DEBUG (symbolP)
+ && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))
+ && S_IS_EXTERNAL (symbolP))
+ || S_GET_SEGMENT (symbolP) == bss_section)
+ && (now_seg == data_section
+ || now_seg == S_GET_SEGMENT (symbolP)))
{
/*
- * Select which of the 2 cases this is
- */
- if (now_seg != SEG_DATA)
+ * Select which of the 2 cases this is
+ */
+ if (now_seg != data_section)
{
/*
- * New .comm for prev .comm symbol.
- * If the new size is larger we just
- * change its value. If the new size
- * is smaller, we ignore this symbol
- */
+ * New .comm for prev .comm symbol.
+ * If the new size is larger we just
+ * change its value. If the new size
+ * is smaller, we ignore this symbol
+ */
if (S_GET_VALUE (symbolP)
- < ((unsigned) (obstack_next_free (&frags) - frag_now->fr_literal)))
+ < ((unsigned) frag_now_fix ()))
{
- S_SET_VALUE (symbolP,
- obstack_next_free (&frags) -
- frag_now->fr_literal);
+ S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
}
}
else
{
- /*
- * It is a .comm/.lcomm being converted
- * to initialized data.
- */
+ /* It is a .comm/.lcomm being converted to initialized
+ data. */
symbolP->sy_frag = frag_now;
-#ifdef VMS
- symbolP->sy_other = const_flag;
-#endif /* VMS */
- S_SET_VALUE (symbolP, obstack_next_free (&frags) - frag_now->fr_literal);
+#ifdef OBJ_VMS
+ S_SET_OTHER(symbolP, const_flag);
+#endif
+ S_SET_VALUE (symbolP, (valueT) frag_now_fix ());
S_SET_SEGMENT (symbolP, now_seg); /* keep N_EXT bit */
}
}
else
{
-#ifdef OBJ_COFF
- as_fatal ("Symbol \"%s\" is already defined as \"%s\"/%d.",
+#if defined (S_GET_OTHER) && defined (S_GET_DESC)
+ as_fatal ("Symbol \"%s\" is already defined as \"%s\"/%d.%d.%ld.",
sym_name,
segment_name (S_GET_SEGMENT (symbolP)),
- S_GET_VALUE (symbolP));
-#else /* OBJ_COFF */
- as_fatal ("Symbol \"%s\" is already defined as \"%s\"/%d.%d.%d.",
+ S_GET_OTHER (symbolP), S_GET_DESC (symbolP),
+ (long) S_GET_VALUE (symbolP));
+#else
+ as_fatal ("Symbol \"%s\" is already defined as \"%s\"/%ld.",
sym_name,
segment_name (S_GET_SEGMENT (symbolP)),
- S_GET_OTHER (symbolP), S_GET_DESC (symbolP),
- S_GET_VALUE (symbolP));
-#endif /* OBJ_COFF */
+ (long) S_GET_VALUE (symbolP));
+#endif
}
} /* if the undefined symbol has no value */
}
{
/* Don't blow up if the definition is the same */
if (!(frag_now == symbolP->sy_frag
- && S_GET_VALUE (symbolP) == obstack_next_free (&frags) - frag_now->fr_literal
+ && S_GET_VALUE (symbolP) == frag_now_fix ()
&& S_GET_SEGMENT (symbolP) == now_seg))
as_fatal ("Symbol %s already defined.", sym_name);
} /* if this symbol is not yet defined */
}
else
{
- symbolP = symbol_new (sym_name,
- now_seg,
- (valueT) (obstack_next_free (&frags) - frag_now->fr_literal),
+ symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (),
frag_now);
-#ifdef VMS
+#ifdef OBJ_VMS
S_SET_OTHER (symbolP, const_flag);
-#endif /* VMS */
+#endif /* OBJ_VMS */
symbol_table_insert (symbolP);
} /* if we have seen this symbol before */
- return;
-} /* colon() */
+ if (mri_common_symbol != NULL)
+ {
+ /* This symbol is actually being defined within an MRI common
+ section. This requires special handling. */
+ symbolP->sy_value.X_op = O_symbol;
+ symbolP->sy_value.X_add_symbol = mri_common_symbol;
+ symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol);
+ symbolP->sy_frag = &zero_address_frag;
+ S_SET_SEGMENT (symbolP, expr_section);
+ symbolP->sy_mri_common = 1;
+ }
+
+#ifdef tc_frob_label
+ tc_frob_label (symbolP);
+#endif
+#ifdef obj_frob_label
+ obj_frob_label (symbolP);
+#endif
+
+ return symbolP;
+}
\f
/*
symbol_table_insert (symbolP)
symbolS *symbolP;
{
- register char *error_string;
+ register const char *error_string;
know (symbolP);
know (S_GET_NAME (symbolP));
- if (*(error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (char *) symbolP)))
+ if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP)))
{
as_fatal ("Inserting \"%s\" into symbol table failed: %s",
S_GET_NAME (symbolP), error_string);
*/
symbolS *
symbol_find_or_make (name)
- char *name;
+ const char *name;
{
register symbolS *symbolP;
symbolS *
symbol_make (name)
- char *name;
+ CONST char *name;
{
symbolS *symbolP;
/* Let the machine description default it, e.g. for register names. */
- symbolP = md_undefined_symbol (name);
+ symbolP = md_undefined_symbol ((char *) name);
if (!symbolP)
- {
- symbolP = symbol_new (name,
- SEG_UNKNOWN,
- 0,
- &zero_address_frag);
- } /* if md didn't build us a symbol */
+ symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag);
return (symbolP);
} /* symbol_make() */
symbolS *
symbol_find (name)
- char *name;
+ CONST char *name;
{
#ifdef STRIP_UNDERSCORE
return (symbol_find_base (name, 1));
symbolS *
symbol_find_base (name, strip_underscore)
- char *name;
+ CONST char *name;
int strip_underscore;
{
if (strip_underscore && *name == '_')
name++;
+
+#ifdef tc_canonicalize_symbol_name
+ {
+ char *copy;
+
+ copy = (char *) alloca (strlen (name) + 1);
+ strcpy (copy, name);
+ name = tc_canonicalize_symbol_name (copy);
+ }
+#endif
+
+ if (! symbols_case_sensitive)
+ {
+ unsigned char *copy;
+
+ copy = (unsigned char *) alloca (strlen (name) + 1);
+ name = (const char *) copy;
+ for (; *copy != '\0'; copy++)
+ if (islower (*copy))
+ *copy = toupper (*copy);
+ }
+
return ((symbolS *) hash_find (sy_hash, name));
}
{
know (*rootPP == NULL);
know (*lastPP == NULL);
+ addme->sy_next = NULL;
+#ifdef SYMBOLS_NEED_BACKPOINTERS
+ addme->sy_previous = NULL;
+#endif
*rootPP = addme;
*lastPP = addme;
return;
addme->sy_previous = target;
#endif /* SYMBOLS_NEED_BACKPOINTERS */
-#ifdef DEBUG
- /* verify_symbol_chain(*rootPP, *lastPP); */
-#endif /* DEBUG */
+ debug_verify_symchain (symbol_rootP, symbol_lastP);
+}
- return;
-} /* symbol_append() */
+/* Set the chain pointers of SYMBOL to null. */
+void
+symbol_clear_list_pointers (symbolP)
+ symbolS *symbolP;
+{
+ symbolP->sy_next = NULL;
+#ifdef SYMBOLS_NEED_BACKPOINTERS
+ symbolP->sy_previous = NULL;
+#endif
+}
#ifdef SYMBOLS_NEED_BACKPOINTERS
/* Remove SYMBOLP from the list. */
symbolP->sy_previous->sy_next = symbolP->sy_next;
} /* if not first */
-#ifdef DEBUG
- verify_symbol_chain (*rootPP, *lastPP);
-#endif /* DEBUG */
-
- return;
-} /* symbol_remove() */
-
-/* Set the chain pointers of SYMBOL to null. */
-void
-symbol_clear_list_pointers (symbolP)
- symbolS *symbolP;
-{
- symbolP->sy_next = NULL;
- symbolP->sy_previous = NULL;
-} /* symbol_clear_list_pointers() */
+ debug_verify_symchain (*rootPP, *lastPP);
+}
/* Link symbol ADDME before symbol TARGET in the chain. */
void
target->sy_previous = addme;
addme->sy_next = target;
-#ifdef DEBUG
- verify_symbol_chain (*rootPP, *lastPP);
-#endif /* DEBUG */
-
- return;
-} /* symbol_insert() */
+ debug_verify_symchain (*rootPP, *lastPP);
+}
#endif /* SYMBOLS_NEED_BACKPOINTERS */
symbolS *symbolP = rootP;
if (symbolP == NULL)
- {
- return;
- } /* empty chain */
+ return;
for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP))
{
#ifdef SYMBOLS_NEED_BACKPOINTERS
- /*$if (symbolP->sy_previous) {
- know(symbolP->sy_previous->sy_next == symbolP);
- } else {
- know(symbolP == rootP);
- }$*//* both directions */
- know (symbolP->sy_next->sy_previous == symbolP);
-#else /* SYMBOLS_NEED_BACKPOINTERS */
+ assert (symbolP->sy_next->sy_previous == symbolP);
+#else
+ /* Walk the list anyways, to make sure pointers are still good. */
;
#endif /* SYMBOLS_NEED_BACKPOINTERS */
- } /* verify pointers */
+ }
+
+ assert (lastP == symbolP);
+}
+
+void
+verify_symbol_chain_2 (sym)
+ symbolS *sym;
+{
+ symbolS *p = sym, *n = sym;
+#ifdef SYMBOLS_NEED_BACKPOINTERS
+ while (symbol_previous (p))
+ p = symbol_previous (p);
+#endif
+ while (symbol_next (n))
+ n = symbol_next (n);
+ verify_symbol_chain (p, n);
+}
- know (lastP == symbolP);
+/* Resolve the value of a symbol. This is called during the final
+ pass over the symbol table to resolve any symbols with complex
+ values. */
- return;
-} /* verify_symbol_chain() */
+valueT
+resolve_symbol_value (symp, finalize)
+ symbolS *symp;
+ int finalize;
+{
+ int resolved;
+ valueT final_val;
+ segT final_seg;
+
+ if (symp->sy_resolved)
+ {
+ if (symp->sy_value.X_op == O_constant)
+ return (valueT) symp->sy_value.X_add_number;
+ else
+ return 0;
+ }
+
+ resolved = 0;
+ final_seg = S_GET_SEGMENT (symp);
+
+ if (symp->sy_resolving)
+ {
+ if (finalize)
+ as_bad ("Symbol definition loop encountered at %s", S_GET_NAME (symp));
+ final_val = 0;
+ resolved = 1;
+ }
+ else
+ {
+ symbolS *add_symbol, *op_symbol;
+ offsetT left, right;
+ segT seg_left, seg_right;
+ operatorT op;
+ symp->sy_resolving = 1;
-#ifdef LOCAL_LABELS_DOLLAR
+ /* Help out with CSE. */
+ add_symbol = symp->sy_value.X_add_symbol;
+ op_symbol = symp->sy_value.X_op_symbol;
+ final_val = symp->sy_value.X_add_number;
+ op = symp->sy_value.X_op;
+
+ switch (op)
+ {
+ default:
+ BAD_CASE (op);
+ break;
+
+ case O_absent:
+ final_val = 0;
+ /* Fall through. */
+
+ case O_constant:
+ final_val += symp->sy_frag->fr_address;
+ if (final_seg == expr_section)
+ final_seg = absolute_section;
+ resolved = 1;
+ break;
+
+ case O_symbol:
+ case O_symbol_rva:
+ left = resolve_symbol_value (add_symbol, finalize);
+ do_symbol:
+
+ if (symp->sy_mri_common)
+ {
+ /* This is a symbol inside an MRI common section. The
+ relocation routines are going to handle it specially.
+ Don't change the value. */
+ resolved = add_symbol->sy_resolved;
+ break;
+ }
+
+ if (finalize && final_val == 0)
+ copy_symbol_attributes (symp, add_symbol);
+
+ /* If we have equated this symbol to an undefined symbol, we
+ keep X_op set to O_symbol, and we don't change
+ X_add_number. This permits the routine which writes out
+ relocation to detect this case, and convert the
+ relocation to be against the symbol to which this symbol
+ is equated. */
+ if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol))
+ {
+ if (finalize)
+ {
+ symp->sy_value.X_op = O_symbol;
+ S_SET_SEGMENT (symp, S_GET_SEGMENT (add_symbol));
+ symp->sy_value.X_add_number = final_val;
+ }
+ final_val = 0;
+ resolved = add_symbol->sy_resolved;
+ goto exit_dont_set_value;
+ }
+ else
+ {
+ final_val += symp->sy_frag->fr_address + left;
+ if (final_seg == expr_section || final_seg == undefined_section)
+ final_seg = S_GET_SEGMENT (add_symbol);
+ }
+
+ resolved = add_symbol->sy_resolved;
+ break;
+
+ case O_uminus:
+ case O_bit_not:
+ case O_logical_not:
+ left = resolve_symbol_value (add_symbol, finalize);
+
+ if (op == O_uminus)
+ left = -left;
+ else if (op == O_logical_not)
+ left = !left;
+ else
+ left = ~left;
+
+ final_val += left + symp->sy_frag->fr_address;
+ if (final_seg == expr_section || final_seg == undefined_section)
+ final_seg = absolute_section;
+
+ resolved = add_symbol->sy_resolved;
+ break;
+
+ case O_multiply:
+ case O_divide:
+ case O_modulus:
+ case O_left_shift:
+ case O_right_shift:
+ case O_bit_inclusive_or:
+ case O_bit_or_not:
+ case O_bit_exclusive_or:
+ case O_bit_and:
+ case O_add:
+ case O_subtract:
+ case O_eq:
+ case O_ne:
+ case O_lt:
+ case O_le:
+ case O_ge:
+ case O_gt:
+ case O_logical_and:
+ case O_logical_or:
+ left = resolve_symbol_value (add_symbol, finalize);
+ right = resolve_symbol_value (op_symbol, finalize);
+ seg_left = S_GET_SEGMENT (add_symbol);
+ seg_right = S_GET_SEGMENT (op_symbol);
+
+ /* Simplify addition or subtraction of a constant by folding the
+ constant into X_add_number. */
+ if (op == O_add || op == O_subtract)
+ {
+ if (seg_right == absolute_section)
+ {
+ if (op == O_add)
+ final_val += right;
+ else
+ final_val -= right;
+ op = O_symbol;
+ op_symbol = NULL;
+ goto do_symbol;
+ }
+ else if (seg_left == absolute_section && op == O_add)
+ {
+ op = O_symbol;
+ final_val += left;
+ add_symbol = op_symbol;
+ left = right;
+ op_symbol = NULL;
+ goto do_symbol;
+ }
+ }
+
+ /* Subtraction is permitted if both operands are in the same
+ section. Otherwise, both operands must be absolute. We
+ already handled the case of addition or subtraction of a
+ constant above. This will probably need to be changed
+ for an object file format which supports arbitrary
+ expressions, such as IEEE-695. */
+ /* Don't emit messages unless we're finalizing the symbol value,
+ otherwise we may get the same message multiple times. */
+ if ((seg_left != absolute_section || seg_right != absolute_section)
+ && (op != O_subtract || seg_left != seg_right)
+ && finalize)
+ {
+ char *file;
+ unsigned int line;
+
+ if (expr_symbol_where (symp, &file, &line))
+ {
+ if (seg_left == undefined_section)
+ as_bad_where (file, line,
+ "undefined symbol %s in operation",
+ S_GET_NAME (symp->sy_value.X_add_symbol));
+ if (seg_right == undefined_section)
+ as_bad_where (file, line,
+ "undefined symbol %s in operation",
+ S_GET_NAME (symp->sy_value.X_op_symbol));
+ if (seg_left != undefined_section
+ && seg_right != undefined_section)
+ as_bad_where (file, line, "invalid section for operation");
+ }
+ else
+ {
+ if (seg_left == undefined_section)
+ as_bad ("undefined symbol %s in operation setting %s",
+ S_GET_NAME (symp->sy_value.X_add_symbol),
+ S_GET_NAME (symp));
+ if (seg_right == undefined_section)
+ as_bad ("undefined symbol %s in operation setting %s",
+ S_GET_NAME (symp->sy_value.X_op_symbol),
+ S_GET_NAME (symp));
+ if (seg_left != undefined_section
+ && seg_right != undefined_section)
+ as_bad ("invalid section for operation setting %s",
+ S_GET_NAME (symp));
+ }
+ }
+
+ /* Check for division by zero. */
+ if ((op == O_divide || op == O_modulus) && right == 0)
+ {
+ /* If seg_right is not absolute_section, then we've
+ already issued a warning about using a bad symbol. */
+ if (seg_right == absolute_section && finalize)
+ {
+ char *file;
+ unsigned int line;
+
+ if (expr_symbol_where (symp, &file, &line))
+ as_bad_where (file, line, "division by zero");
+ else
+ as_bad ("division by zero when setting %s",
+ S_GET_NAME (symp));
+ }
+
+ right = 1;
+ }
+
+ switch (symp->sy_value.X_op)
+ {
+ case O_multiply: left *= right; break;
+ case O_divide: left /= right; break;
+ case O_modulus: left %= right; break;
+ case O_left_shift: left <<= right; break;
+ case O_right_shift: left >>= right; break;
+ case O_bit_inclusive_or: left |= right; break;
+ case O_bit_or_not: left |= ~right; break;
+ case O_bit_exclusive_or: left ^= right; break;
+ case O_bit_and: left &= right; break;
+ case O_add: left += right; break;
+ case O_subtract: left -= right; break;
+ case O_eq: left = left == right ? ~ (offsetT) 0 : 0; break;
+ case O_ne: left = left != right ? ~ (offsetT) 0 : 0; break;
+ case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break;
+ case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break;
+ case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break;
+ case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break;
+ case O_logical_and: left = left && right; break;
+ case O_logical_or: left = left || right; break;
+ default: abort ();
+ }
+
+ final_val += symp->sy_frag->fr_address + left;
+ if (final_seg == expr_section || final_seg == undefined_section)
+ final_seg = absolute_section;
+ resolved = (add_symbol->sy_resolved && op_symbol->sy_resolved);
+ break;
+
+ case O_register:
+ case O_big:
+ case O_illegal:
+ /* Give an error (below) if not in expr_section. We don't
+ want to worry about expr_section symbols, because they
+ are fictional (they are created as part of expression
+ resolution), and any problems may not actually mean
+ anything. */
+ break;
+ }
+
+ symp->sy_resolving = 0;
+ }
+
+ if (finalize)
+ {
+ S_SET_VALUE (symp, final_val);
+
+#if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER)
+ /* The old a.out backend does not handle S_SET_SEGMENT correctly
+ for a stab symbol, so we use this bad hack. */
+ if (final_seg != S_GET_SEGMENT (symp))
+#endif
+ S_SET_SEGMENT (symp, final_seg);
+ }
+
+exit_dont_set_value:
+ /* Don't worry if we can't resolve an expr_section symbol. */
+ if (finalize)
+ {
+ if (resolved)
+ symp->sy_resolved = 1;
+ else if (S_GET_SEGMENT (symp) != expr_section)
+ {
+ as_bad ("can't resolve value for symbol \"%s\"", S_GET_NAME (symp));
+ symp->sy_resolved = 1;
+ }
+ }
+
+ return final_val;
+}
/* Dollar labels look like a number followed by a dollar sign. Eg, "42$".
They are *really* local. That is, they go out of scope whenever we see a
the instance number, keep a list of defined symbols separate from the real
symbol table, and we treat these buggers as a sparse array. */
-static long *dollar_labels = NULL;
-static long *dollar_label_instances = NULL;
-static char *dollar_label_defines = NULL;
-static long dollar_label_count = 0;
-static long dollar_label_max = 0;
+static long *dollar_labels;
+static long *dollar_label_instances;
+static char *dollar_label_defines;
+static unsigned long dollar_label_count;
+static unsigned long dollar_label_max;
int
dollar_label_defined (label)
know ((dollar_labels != NULL) || (dollar_label_count == 0));
for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
- {
- if (*i == label)
- {
- return (dollar_label_defines[i - dollar_labels]);
- } /* found it */
- } /* look for label */
+ if (*i == label)
+ return dollar_label_defines[i - dollar_labels];
/* if we get here, label isn't defined */
- return (0);
+ return 0;
} /* dollar_label_defined() */
-static int
+static long
dollar_label_instance (label)
long label;
{
know ((dollar_labels != NULL) || (dollar_label_count == 0));
for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
- {
- if (*i == label)
- {
- return (dollar_label_instances[i - dollar_labels]);
- } /* found it */
- } /* look for (the union :-) label */
+ if (*i == label)
+ return (dollar_label_instances[i - dollar_labels]);
- /* if we get here, we haven't seen the label before, therefor it's instance
- count is zero. */
- return (0);
-} /* dollar_label_instance() */
+ /* If we get here, we haven't seen the label before, therefore its instance
+ count is zero. */
+ return 0;
+}
void
dollar_label_clear ()
{
- memset (dollar_label_defines, '\0', dollar_label_count);
- return;
-} /* clear_dollar_labels() */
+ memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count);
+}
#define DOLLAR_LABEL_BUMP_BY 10
long *i;
for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i)
- {
- if (*i == label)
- {
- ++dollar_label_instances[i - dollar_labels];
- dollar_label_defines[i - dollar_labels] = 1;
- return;
- } /* if we find it */
- } /* for each existing label */
+ if (*i == label)
+ {
+ ++dollar_label_instances[i - dollar_labels];
+ dollar_label_defines[i - dollar_labels] = 1;
+ return;
+ }
/* if we get to here, we don't have label listed yet. */
dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY);
dollar_label_max = DOLLAR_LABEL_BUMP_BY;
dollar_label_count = 0;
-
}
else if (dollar_label_count == dollar_label_max)
{
dollar_label_instances[dollar_label_count] = 1;
dollar_label_defines[dollar_label_count] = 1;
++dollar_label_count;
- return;
-} /* define_dollar_label() */
+}
/*
* dollar_label_name()
*
* Caller must copy returned name: we re-use the area for the next name.
*
- * The mth occurence of label n: is turned into the symbol "Ln^Am" where
- * n is the label number and m is the instance number. "L" makes it a label discarded
- * unless debugging and "^A"('\1') ensures no ordinary symbol SHOULD get the
- * same name as a local label symbol. The first "4:" is "L4^A1" - the m
- * numbers begin at 1.
+ * The mth occurence of label n: is turned into the symbol "Ln^Am"
+ * where n is the label number and m is the instance number. "L" makes
+ * it a label discarded unless debugging and "^A"('\1') ensures no
+ * ordinary symbol SHOULD get the same name as a local label
+ * symbol. The first "4:" is "L4^A1" - the m numbers begin at 1.
*
* fb labels get the same treatment, except that ^B is used in place of ^A.
*/
while ((*p++ = *--q) != '\0');;
/* The label, as a '\0' ended string, starts at symbol_name_build. */
- return (symbol_name_build);
-} /* dollar_label_name() */
-
-#endif /* LOCAL_LABELS_DOLLAR */
-
-#ifdef LOCAL_LABELS_FB
+ return symbol_name_build;
+}
/*
* Sombody else's idea of local labels. They are made by "n:" where n
static long fb_low_counter[FB_LABEL_SPECIAL];
static long *fb_labels;
static long *fb_label_instances;
-static long fb_label_count = 0;
-static long fb_label_max = 0;
+static long fb_label_count;
+static long fb_label_max;
/* this must be more than FB_LABEL_SPECIAL */
#define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6)
fb_label_init ()
{
memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter));
- return;
} /* fb_label_init() */
/* add one to the instance number of this fb label */
return;
}
- for (i = fb_labels + FB_LABEL_SPECIAL; i < fb_labels + fb_label_count; ++i)
+ if (fb_labels != NULL)
{
- if (*i == label)
+ for (i = fb_labels + FB_LABEL_SPECIAL;
+ i < fb_labels + fb_label_count; ++i)
{
- ++fb_label_instances[i - fb_labels];
- return;
- } /* if we find it */
- } /* for each existing label */
+ if (*i == label)
+ {
+ ++fb_label_instances[i - fb_labels];
+ return;
+ } /* if we find it */
+ } /* for each existing label */
+ }
/* if we get to here, we don't have label listed yet. */
fb_labels[fb_label_count] = label;
fb_label_instances[fb_label_count] = 1;
++fb_label_count;
- return;
-} /* fb_label_instance_inc() */
+}
static long
fb_label_instance (label)
return (fb_low_counter[label]);
}
- for (i = fb_labels + FB_LABEL_SPECIAL; i < fb_labels + fb_label_count; ++i)
+ if (fb_labels != NULL)
{
- if (*i == label)
+ for (i = fb_labels + FB_LABEL_SPECIAL;
+ i < fb_labels + fb_label_count; ++i)
{
- return (fb_label_instances[i - fb_labels]);
- } /* if we find it */
- } /* for each existing label */
+ if (*i == label)
+ {
+ return (fb_label_instances[i - fb_labels]);
+ } /* if we find it */
+ } /* for each existing label */
+ }
- /* NOTREACHED */
- know (0);
-} /* fb_label_instance() */
+ /* We didn't find the label, so this must be a reference to the
+ first instance. */
+ return 0;
+}
/*
* fb_label_name()
*
* Caller must copy returned name: we re-use the area for the next name.
*
- * The mth occurence of label n: is turned into the symbol "Ln^Bm" where
- * n is the label number and m is the instance number. "L" makes it a label discarded
- * unless debugging and "^B"('\2') ensures no ordinary symbol SHOULD get the
- * same name as a local label symbol. The first "4:" is "L4^B1" - the m
- * numbers begin at 1.
+ * The mth occurence of label n: is turned into the symbol "Ln^Bm"
+ * where n is the label number and m is the instance number. "L" makes
+ * it a label discarded unless debugging and "^B"('\2') ensures no
+ * ordinary symbol SHOULD get the same name as a local label
+ * symbol. The first "4:" is "L4^B1" - the m numbers begin at 1.
*
- * dollar labels get the same treatment, except that ^A is used in place of ^B.
- */
+ * dollar labels get the same treatment, except that ^A is used in place of ^B. */
char * /* Return local label name. */
fb_label_name (n, augend)
return (symbol_name_build);
} /* fb_label_name() */
-#endif /* LOCAL_LABELS_FB */
-
-
/*
* decode name that may have been generated by foo_label_name() above. If
* the name wasn't generated by foo_label_name(), then return it unaltered.
const char *message_format = "\"%d\" (instance number %d of a %s label)";
if (s[0] != 'L')
- return (s);
+ return s;
- for (label_number = 0, p = s + 1; isdigit (*p); ++p)
- {
- label_number = (10 * label_number) + *p - '0';
- }
+ for (label_number = 0, p = s + 1; isdigit ((unsigned char) *p); ++p)
+ label_number = (10 * label_number) + *p - '0';
if (*p == 1)
+ type = "dollar";
+ else if (*p == 2)
+ type = "fb";
+ else
+ return s;
+
+ for (instance_number = 0, p++; isdigit ((unsigned char) *p); ++p)
+ instance_number = (10 * instance_number) + *p - '0';
+
+ symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30);
+ sprintf (symbol_decode, message_format, label_number, instance_number, type);
+
+ return symbol_decode;
+}
+
+/* Get the value of a symbol. */
+
+valueT
+S_GET_VALUE (s)
+ symbolS *s;
+{
+ if (!s->sy_resolved && s->sy_value.X_op != O_constant)
+ resolve_symbol_value (s, 1);
+ if (s->sy_value.X_op != O_constant)
{
- type = "dollar";
+ static symbolS *recur;
+
+ /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON
+ may call S_GET_VALUE. We use a static symbol to avoid the
+ immediate recursion. */
+ if (recur == s)
+ return (valueT) s->sy_value.X_add_number;
+ recur = s;
+ if (! s->sy_resolved
+ || s->sy_value.X_op != O_symbol
+ || (S_IS_DEFINED (s) && ! S_IS_COMMON (s)))
+ as_bad ("Attempt to get value of unresolved symbol %s",
+ S_GET_NAME (s));
+ recur = NULL;
}
- else if (*p == 2)
+ return (valueT) s->sy_value.X_add_number;
+}
+
+/* Set the value of a symbol. */
+
+void
+S_SET_VALUE (s, val)
+ symbolS *s;
+ valueT val;
+{
+ s->sy_value.X_op = O_constant;
+ s->sy_value.X_add_number = (offsetT) val;
+ s->sy_value.X_unsigned = 0;
+}
+
+void
+copy_symbol_attributes (dest, src)
+ symbolS *dest, *src;
+{
+#ifdef BFD_ASSEMBLER
+ /* In an expression, transfer the settings of these flags.
+ The user can override later, of course. */
+#define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT)
+ dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS;
+#endif
+
+#ifdef OBJ_COPY_SYMBOL_ATTRIBUTES
+ OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src);
+#endif
+}
+
+#ifdef BFD_ASSEMBLER
+
+int
+S_IS_EXTERNAL (s)
+ symbolS *s;
+{
+ flagword flags = s->bsym->flags;
+
+ /* sanity check */
+ if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
+ abort ();
+
+ return (flags & BSF_GLOBAL) != 0;
+}
+
+int
+S_IS_WEAK (s)
+ symbolS *s;
+{
+ return (s->bsym->flags & BSF_WEAK) != 0;
+}
+
+int
+S_IS_COMMON (s)
+ symbolS *s;
+{
+ return bfd_is_com_section (s->bsym->section);
+}
+
+int
+S_IS_DEFINED (s)
+ symbolS *s;
+{
+ return s->bsym->section != undefined_section;
+}
+
+int
+S_IS_DEBUG (s)
+ symbolS *s;
+{
+ if (s->bsym->flags & BSF_DEBUGGING)
+ return 1;
+ return 0;
+}
+
+int
+S_IS_LOCAL (s)
+ symbolS *s;
+{
+ flagword flags = s->bsym->flags;
+ const char *name;
+
+ /* sanity check */
+ if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
+ abort ();
+
+ if (bfd_get_section (s->bsym) == reg_section)
+ return 1;
+
+ if (flag_strip_local_absolute
+ && (flags & BSF_GLOBAL) == 0
+ && bfd_get_section (s->bsym) == absolute_section)
+ return 1;
+
+ name = S_GET_NAME (s);
+ return (name != NULL
+ && ! S_IS_DEBUG (s)
+ && (strchr (name, '\001')
+ || strchr (name, '\002')
+ || (! flag_keep_locals
+ && (bfd_is_local_label (stdoutput, s->bsym)
+ || (flag_mri
+ && name[0] == '?'
+ && name[1] == '?')))));
+}
+
+int
+S_IS_EXTERN (s)
+ symbolS *s;
+{
+ return S_IS_EXTERNAL (s);
+}
+
+int
+S_IS_STABD (s)
+ symbolS *s;
+{
+ return S_GET_NAME (s) == 0;
+}
+
+CONST char *
+S_GET_NAME (s)
+ symbolS *s;
+{
+ return s->bsym->name;
+}
+
+segT
+S_GET_SEGMENT (s)
+ symbolS *s;
+{
+ return s->bsym->section;
+}
+
+void
+S_SET_SEGMENT (s, seg)
+ symbolS *s;
+ segT seg;
+{
+ /* Don't reassign section symbols. The direct reason is to prevent seg
+ faults assigning back to const global symbols such as *ABS*, but it
+ shouldn't happen anyway. */
+
+ if (s->bsym->flags & BSF_SECTION_SYM)
{
- type = "fb";
+ if (s->bsym->section != seg)
+ abort();
}
else
+ s->bsym->section = seg;
+}
+
+void
+S_SET_EXTERNAL (s)
+ symbolS *s;
+{
+ if ((s->bsym->flags & BSF_WEAK) != 0)
{
- return (s);
+ /* Let .weak override .global. */
+ return;
}
+ s->bsym->flags |= BSF_GLOBAL;
+ s->bsym->flags &= ~(BSF_LOCAL|BSF_WEAK);
+}
- for (instance_number = 0, p = s + 1; isdigit (*p); ++p)
+void
+S_CLEAR_EXTERNAL (s)
+ symbolS *s;
+{
+ if ((s->bsym->flags & BSF_WEAK) != 0)
{
- instance_number = (10 * instance_number) + *p - '0';
+ /* Let .weak override. */
+ return;
}
+ s->bsym->flags |= BSF_LOCAL;
+ s->bsym->flags &= ~(BSF_GLOBAL|BSF_WEAK);
+}
- symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30);
- (void) sprintf (symbol_decode, message_format, label_number,
- instance_number, type);
+void
+S_SET_WEAK (s)
+ symbolS *s;
+{
+ s->bsym->flags |= BSF_WEAK;
+ s->bsym->flags &= ~(BSF_GLOBAL|BSF_LOCAL);
+}
- return (symbol_decode);
-} /* decode_local_label_name() */
+void
+S_SET_NAME (s, name)
+ symbolS *s;
+ char *name;
+{
+ s->bsym->name = name;
+}
+#endif /* BFD_ASSEMBLER */
+void
+symbol_begin ()
+{
+ symbol_lastP = NULL;
+ symbol_rootP = NULL; /* In case we have 0 symbols (!!) */
+ sy_hash = hash_new ();
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+ memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol));
+#ifdef BFD_ASSEMBLER
+#if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL)
+ abs_symbol.bsym = bfd_abs_section.symbol;
+#endif
+#else
+ /* Can't initialise a union. Sigh. */
+ S_SET_SEGMENT (&abs_symbol, absolute_section);
+#endif
+ abs_symbol.sy_value.X_op = O_constant;
+ abs_symbol.sy_frag = &zero_address_frag;
+
+ if (LOCAL_LABELS_FB)
+ fb_label_init ();
+}
+
+\f
+int indent_level;
+
+/* Maximum indent level.
+ Available for modification inside a gdb session. */
+int max_indent_level = 8;
+
+#if 0
+
+static void
+indent ()
+{
+ printf ("%*s", indent_level * 4, "");
+}
+
+#endif
+
+void
+print_symbol_value_1 (file, sym)
+ FILE *file;
+ symbolS *sym;
+{
+ const char *name = S_GET_NAME (sym);
+ if (!name || !name[0])
+ name = "(unnamed)";
+ fprintf (file, "sym %lx %s", (unsigned long) sym, name);
+ if (sym->sy_frag != &zero_address_frag)
+ fprintf (file, " frag %lx", (long) sym->sy_frag);
+ if (sym->written)
+ fprintf (file, " written");
+ if (sym->sy_resolved)
+ fprintf (file, " resolved");
+ else if (sym->sy_resolving)
+ fprintf (file, " resolving");
+ if (sym->sy_used_in_reloc)
+ fprintf (file, " used-in-reloc");
+ if (sym->sy_used)
+ fprintf (file, " used");
+ if (S_IS_LOCAL (sym))
+ fprintf (file, " local");
+ if (S_IS_EXTERN (sym))
+ fprintf (file, " extern");
+ if (S_IS_DEBUG (sym))
+ fprintf (file, " debug");
+ if (S_IS_DEFINED (sym))
+ fprintf (file, " defined");
+ fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym)));
+ if (sym->sy_resolved)
+ {
+ segT s = S_GET_SEGMENT (sym);
+
+ if (s != undefined_section
+ && s != expr_section)
+ fprintf (file, " %lx", (long) S_GET_VALUE (sym));
+ }
+ else if (indent_level < max_indent_level
+ && S_GET_SEGMENT (sym) != undefined_section)
+ {
+ indent_level++;
+ fprintf (file, "\n%*s<", indent_level * 4, "");
+ print_expr_1 (file, &sym->sy_value);
+ fprintf (file, ">");
+ indent_level--;
+ }
+ fflush (file);
+}
+
+void
+print_symbol_value (sym)
+ symbolS *sym;
+{
+ indent_level = 0;
+ print_symbol_value_1 (stderr, sym);
+ fprintf (stderr, "\n");
+}
+
+static void
+print_binary (file, name, exp)
+ FILE *file;
+ const char * name;
+ expressionS *exp;
+{
+ indent_level++;
+ fprintf (file, "%s\n%*s<", name, indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_add_symbol);
+ fprintf (file, ">\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_op_symbol);
+ fprintf (file, ">");
+ indent_level--;
+}
+
+void
+print_expr_1 (file, exp)
+ FILE *file;
+ expressionS *exp;
+{
+ fprintf (file, "expr %lx ", (long) exp);
+ switch (exp->X_op)
+ {
+ case O_illegal:
+ fprintf (file, "illegal");
+ break;
+ case O_absent:
+ fprintf (file, "absent");
+ break;
+ case O_constant:
+ fprintf (file, "constant %lx", (long) exp->X_add_number);
+ break;
+ case O_symbol:
+ indent_level++;
+ fprintf (file, "symbol\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_add_symbol);
+ fprintf (file, ">");
+ maybe_print_addnum:
+ if (exp->X_add_number)
+ fprintf (file, "\n%*s%lx", indent_level * 4, "",
+ (long) exp->X_add_number);
+ indent_level--;
+ break;
+ case O_register:
+ fprintf (file, "register #%d", (int) exp->X_add_number);
+ break;
+ case O_big:
+ fprintf (file, "big");
+ break;
+ case O_uminus:
+ fprintf (file, "uminus -<");
+ indent_level++;
+ print_symbol_value_1 (file, exp->X_add_symbol);
+ fprintf (file, ">");
+ goto maybe_print_addnum;
+ case O_bit_not:
+ fprintf (file, "bit_not");
+ break;
+ case O_multiply:
+ print_binary (file, "multiply", exp);
+ break;
+ case O_divide:
+ print_binary (file, "divide", exp);
+ break;
+ case O_modulus:
+ print_binary (file, "modulus", exp);
+ break;
+ case O_left_shift:
+ print_binary (file, "lshift", exp);
+ break;
+ case O_right_shift:
+ print_binary (file, "rshift", exp);
+ break;
+ case O_bit_inclusive_or:
+ print_binary (file, "bit_ior", exp);
+ break;
+ case O_bit_exclusive_or:
+ print_binary (file, "bit_xor", exp);
+ break;
+ case O_bit_and:
+ print_binary (file, "bit_and", exp);
+ break;
+ case O_eq:
+ print_binary (file, "eq", exp);
+ break;
+ case O_ne:
+ print_binary (file, "ne", exp);
+ break;
+ case O_lt:
+ print_binary (file, "lt", exp);
+ break;
+ case O_le:
+ print_binary (file, "le", exp);
+ break;
+ case O_ge:
+ print_binary (file, "ge", exp);
+ break;
+ case O_gt:
+ print_binary (file, "gt", exp);
+ break;
+ case O_logical_and:
+ print_binary (file, "logical_and", exp);
+ break;
+ case O_logical_or:
+ print_binary (file, "logical_or", exp);
+ break;
+ case O_add:
+ indent_level++;
+ fprintf (file, "add\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_add_symbol);
+ fprintf (file, ">\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_op_symbol);
+ fprintf (file, ">");
+ goto maybe_print_addnum;
+ case O_subtract:
+ indent_level++;
+ fprintf (file, "subtract\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_add_symbol);
+ fprintf (file, ">\n%*s<", indent_level * 4, "");
+ print_symbol_value_1 (file, exp->X_op_symbol);
+ fprintf (file, ">");
+ goto maybe_print_addnum;
+ default:
+ fprintf (file, "{unknown opcode %d}", (int) exp->X_op);
+ break;
+ }
+ fflush (stdout);
+}
+
+void
+print_expr (exp)
+ expressionS *exp;
+{
+ print_expr_1 (stderr, exp);
+ fprintf (stderr, "\n");
+}
+
+void
+symbol_print_statistics (file)
+ FILE *file;
+{
+ hash_print_statistics (file, "symbol table", sy_hash);
+}
/* end of symbols.c */
projects / deliverable / binutils-gdb.git / blobdiff