+ relc_symbol_name = symbol_relc_make_expr (& symp->sy_value);
+
+ /* For debugging, print out conversion input & output. */
+#ifdef DEBUG_SYMS
+ print_expr (& symp->sy_value);
+ if (relc_symbol_name)
+ fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name);
+#endif
+
+ if (relc_symbol_name != NULL)
+ relc_symbol = symbol_new (relc_symbol_name, undefined_section,
+ 0, & zero_address_frag);
+
+ if (relc_symbol == NULL)
+ {
+ as_bad (_("cannot convert expression symbol %s to complex relocation"),
+ S_GET_NAME (symp));
+ resolved = 0;
+ }
+ else
+ {
+ symbol_table_insert (relc_symbol);
+
+ /* S_CLEAR_EXTERNAL (relc_symbol); */
+ if (symp->bsym->flags & BSF_SRELC)
+ relc_symbol->bsym->flags |= BSF_SRELC;
+ else
+ relc_symbol->bsym->flags |= BSF_RELC;
+ /* symp->bsym->flags |= BSF_RELC; */
+ copy_symbol_attributes (symp, relc_symbol);
+ symp->sy_value.X_op = O_symbol;
+ symp->sy_value.X_add_symbol = relc_symbol;
+ symp->sy_value.X_add_number = 0;
+ resolved = 1;
+ }
+
+ final_seg = undefined_section;
+ goto exit_dont_set_value;
+ }
+#endif
+ else
+ {
+ symbolS *add_symbol, *op_symbol;
+ offsetT left, right;
+ segT seg_left, seg_right;
+ operatorT op;
+ int move_seg_ok;
+
+ symp->sy_flags.sy_resolving = 1;
+
+ /* 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 / OCTETS_PER_BYTE;
+ if (final_seg == expr_section)
+ final_seg = absolute_section;
+ /* Fall through. */
+
+ case O_register:
+ resolved = 1;
+ break;
+
+ case O_symbol:
+ case O_symbol_rva:
+ left = resolve_symbol_value (add_symbol);
+ seg_left = S_GET_SEGMENT (add_symbol);
+ if (finalize_syms)
+ symp->sy_value.X_op_symbol = NULL;
+
+ do_symbol:
+ if (S_IS_WEAKREFR (symp))
+ {
+ gas_assert (final_val == 0);
+ if (S_IS_WEAKREFR (add_symbol))
+ {
+ gas_assert (add_symbol->sy_value.X_op == O_symbol
+ && add_symbol->sy_value.X_add_number == 0);
+ add_symbol = add_symbol->sy_value.X_add_symbol;
+ gas_assert (! S_IS_WEAKREFR (add_symbol));
+ symp->sy_value.X_add_symbol = add_symbol;
+ }
+ }
+
+ if (symp->sy_flags.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 = symbol_resolved_p (add_symbol);
+ break;
+ }
+
+ if (finalize_syms && final_val == 0)
+ {
+ if (LOCAL_SYMBOL_CHECK (add_symbol))
+ add_symbol = local_symbol_convert ((struct local_symbol *)
+ add_symbol);
+ copy_symbol_attributes (symp, add_symbol);
+ }
+
+ /* If we have equated this symbol to an undefined or common
+ symbol, keep X_op set to O_symbol, and 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)
+#if defined (OBJ_COFF) && defined (TE_PE)
+ || S_IS_WEAK (add_symbol)
+#endif
+ || S_IS_COMMON (add_symbol))
+ {
+ if (finalize_syms)
+ {
+ symp->sy_value.X_op = O_symbol;
+ symp->sy_value.X_add_symbol = add_symbol;
+ symp->sy_value.X_add_number = final_val;
+ /* Use X_op_symbol as a flag. */
+ symp->sy_value.X_op_symbol = add_symbol;
+ }
+ final_seg = seg_left;
+ final_val = 0;
+ resolved = symbol_resolved_p (add_symbol);
+ symp->sy_flags.sy_resolving = 0;
+ goto exit_dont_set_value;
+ }
+ else if (finalize_syms
+ && ((final_seg == expr_section && seg_left != expr_section)
+ || symbol_shadow_p (symp)))
+ {
+ /* If the symbol is an expression symbol, do similarly
+ as for undefined and common syms above. Handles
+ "sym +/- expr" where "expr" cannot be evaluated
+ immediately, and we want relocations to be against
+ "sym", eg. because it is weak. */
+ symp->sy_value.X_op = O_symbol;
+ symp->sy_value.X_add_symbol = add_symbol;
+ symp->sy_value.X_add_number = final_val;
+ symp->sy_value.X_op_symbol = add_symbol;
+ final_seg = seg_left;
+ final_val += symp->sy_frag->fr_address + left;
+ resolved = symbol_resolved_p (add_symbol);
+ symp->sy_flags.sy_resolving = 0;
+ 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 = seg_left;
+ }
+
+ resolved = symbol_resolved_p (add_symbol);
+ if (S_IS_WEAKREFR (symp))
+ {
+ symp->sy_flags.sy_resolving = 0;
+ goto exit_dont_set_value;
+ }
+ break;
+
+ case O_uminus:
+ case O_bit_not:
+ case O_logical_not:
+ left = resolve_symbol_value (add_symbol);
+ seg_left = S_GET_SEGMENT (add_symbol);
+
+ /* By reducing these to the relevant dyadic operator, we get
+ !S -> S == 0 permitted on anything,
+ -S -> 0 - S only permitted on absolute
+ ~S -> S ^ ~0 only permitted on absolute */
+ if (op != O_logical_not && seg_left != absolute_section
+ && finalize_syms)
+ report_op_error (symp, NULL, op, add_symbol);
+
+ if (final_seg == expr_section || final_seg == undefined_section)
+ final_seg = absolute_section;
+
+ 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;
+
+ resolved = symbol_resolved_p (add_symbol);
+ 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);
+ right = resolve_symbol_value (op_symbol);
+ 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)
+ {
+ if (seg_right == absolute_section)
+ {
+ final_val += right;
+ goto do_symbol;
+ }
+ else if (seg_left == absolute_section)
+ {
+ final_val += left;
+ add_symbol = op_symbol;
+ left = right;
+ seg_left = seg_right;
+ goto do_symbol;
+ }
+ }
+ else if (op == O_subtract)
+ {
+ if (seg_right == absolute_section)
+ {
+ final_val -= right;
+ goto do_symbol;
+ }
+ }
+
+ move_seg_ok = 1;
+ /* Equality and non-equality tests are permitted on anything.
+ Subtraction, and other comparison operators are 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. */
+ if (!(seg_left == absolute_section
+ && seg_right == absolute_section)
+ && !(op == O_eq || op == O_ne)
+ && !((op == O_subtract
+ || op == O_lt || op == O_le || op == O_ge || op == O_gt)
+ && seg_left == seg_right
+ && (seg_left != undefined_section
+ || add_symbol == op_symbol)))
+ {
+ /* Don't emit messages unless we're finalizing the symbol value,
+ otherwise we may get the same message multiple times. */
+ if (finalize_syms)
+ report_op_error (symp, add_symbol, op, op_symbol);
+ /* However do not move the symbol into the absolute section
+ if it cannot currently be resolved - this would confuse
+ other parts of the assembler into believing that the
+ expression had been evaluated to zero. */
+ else
+ move_seg_ok = 0;
+ }
+
+ if (move_seg_ok
+ && (final_seg == expr_section || final_seg == undefined_section))
+ final_seg = absolute_section;
+
+ /* 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_syms)
+ {
+ const 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:
+ case O_ne:
+ left = (left == right && seg_left == seg_right
+ && (seg_left != undefined_section
+ || add_symbol == op_symbol)
+ ? ~ (offsetT) 0 : 0);
+ if (symp->sy_value.X_op == O_ne)
+ left = ~left;
+ 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)
+ {
+ if (seg_left == undefined_section
+ || seg_right == undefined_section)
+ final_seg = undefined_section;
+ else if (seg_left == absolute_section)
+ final_seg = seg_right;
+ else
+ final_seg = seg_left;
+ }
+ resolved = (symbol_resolved_p (add_symbol)
+ && symbol_resolved_p (op_symbol));
+ break;
+
+ 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_flags.sy_resolving = 0;
+ }
+
+ if (finalize_syms)
+ S_SET_VALUE (symp, final_val);
+
+exit_dont_set_value:
+ /* Always set the segment, even if not finalizing the value.
+ The segment is used to determine whether a symbol is defined. */
+ S_SET_SEGMENT (symp, final_seg);
+
+ /* Don't worry if we can't resolve an expr_section symbol. */
+ if (finalize_syms)
+ {
+ if (resolved)
+ symp->sy_flags.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_flags.sy_resolved = 1;
+ }
+ }
+
+ return final_val;
+}
+
+static void resolve_local_symbol (const char *, void *);
+
+/* A static function passed to hash_traverse. */
+
+static void
+resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, void *value)
+{
+ if (value != NULL)
+ resolve_symbol_value ((symbolS *) value);
+}
+
+/* Resolve all local symbols. */
+
+void
+resolve_local_symbol_values (void)
+{
+ hash_traverse (local_hash, resolve_local_symbol);
+}
+
+/* Obtain the current value of a symbol without changing any
+ sub-expressions used. */
+
+int
+snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP)
+{
+ symbolS *symbolP = *symbolPP;
+
+ if (LOCAL_SYMBOL_CHECK (symbolP))
+ {
+ struct local_symbol *locsym = (struct local_symbol *) symbolP;
+
+ *valueP = locsym->lsy_value;
+ *segP = locsym->lsy_section;
+ *fragPP = local_symbol_get_frag (locsym);
+ }
+ else
+ {
+ expressionS exp = symbolP->sy_value;
+
+ if (!symbolP->sy_flags.sy_resolved && exp.X_op != O_illegal)
+ {
+ int resolved;
+
+ if (symbolP->sy_flags.sy_resolving)
+ return 0;
+ symbolP->sy_flags.sy_resolving = 1;
+ resolved = resolve_expression (&exp);
+ symbolP->sy_flags.sy_resolving = 0;
+ if (!resolved)
+ return 0;
+
+ switch (exp.X_op)
+ {
+ case O_constant:
+ case O_register:
+ if (!symbol_equated_p (symbolP))
+ break;
+ /* Fall thru. */
+ case O_symbol:
+ case O_symbol_rva:
+ symbolP = exp.X_add_symbol;
+ break;
+ default:
+ return 0;
+ }
+ }
+
+ *symbolPP = symbolP;
+ *valueP = exp.X_add_number;
+ *segP = symbolP->bsym->section;
+ *fragPP = symbolP->sy_frag;
+
+ if (*segP == expr_section)
+ switch (exp.X_op)
+ {
+ case O_constant: *segP = absolute_section; break;
+ case O_register: *segP = reg_section; break;
+ default: break;
+ }
+ }
+
+ return 1;
+}
+
+/* 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
+ label that isn't local. Also, like fb labels, there can be multiple
+ instances of a dollar label. Therefor, we name encode each instance with
+ 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;
+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 (long label)
+{
+ long *i;
+
+ 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];
+
+ /* If we get here, label isn't defined. */
+ return 0;
+}
+
+static long
+dollar_label_instance (long label)
+{
+ long *i;
+
+ 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]);
+
+ /* If we get here, we haven't seen the label before.
+ Therefore its instance count is zero. */
+ return 0;
+}
+
+void
+dollar_label_clear (void)
+{
+ memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count);
+}
+
+#define DOLLAR_LABEL_BUMP_BY 10
+
+void
+define_dollar_label (long label)
+{
+ 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 get to here, we don't have label listed yet. */
+
+ if (dollar_labels == NULL)
+ {
+ dollar_labels = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY);
+ dollar_label_instances = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY);
+ dollar_label_defines = XNEWVEC (char, 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_max += DOLLAR_LABEL_BUMP_BY;
+ dollar_labels = XRESIZEVEC (long, dollar_labels, dollar_label_max);
+ dollar_label_instances = XRESIZEVEC (long, dollar_label_instances,
+ dollar_label_max);
+ dollar_label_defines = XRESIZEVEC (char, dollar_label_defines,
+ dollar_label_max);
+ } /* if we needed to grow */
+
+ dollar_labels[dollar_label_count] = label;
+ dollar_label_instances[dollar_label_count] = 1;
+ dollar_label_defines[dollar_label_count] = 1;
+ ++dollar_label_count;
+}
+
+/* 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.
+
+ fb labels get the same treatment, except that ^B is used in place
+ of ^A. */
+
+char * /* Return local label name. */
+dollar_label_name (long n, /* we just saw "n$:" : n a number. */
+ int augend /* 0 for current instance, 1 for new instance. */)
+{
+ long i;
+ /* Returned to caller, then copied. Used for created names ("4f"). */
+ static char symbol_name_build[24];
+ char *p;
+ char *q;
+ char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */
+
+ know (n >= 0);
+ know (augend == 0 || augend == 1);
+ p = symbol_name_build;
+#ifdef LOCAL_LABEL_PREFIX
+ *p++ = LOCAL_LABEL_PREFIX;
+#endif
+ *p++ = 'L';
+
+ /* Next code just does sprintf( {}, "%d", n); */
+ /* Label number. */
+ q = symbol_name_temporary;
+ for (*q++ = 0, i = n; i; ++q)
+ {
+ *q = i % 10 + '0';
+ i /= 10;
+ }
+ while ((*p = *--q) != '\0')
+ ++p;
+
+ *p++ = DOLLAR_LABEL_CHAR; /* ^A */
+
+ /* Instance number. */
+ q = symbol_name_temporary;
+ for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q)
+ {
+ *q = i % 10 + '0';
+ i /= 10;
+ }
+ while ((*p++ = *--q) != '\0');
+
+ /* The label, as a '\0' ended string, starts at symbol_name_build. */
+ return symbol_name_build;
+}
+
+/* Somebody else's idea of local labels. They are made by "n:" where n
+ is any decimal digit. Refer to them with
+ "nb" for previous (backward) n:
+ or "nf" for next (forward) n:.
+
+ We do a little better and let n be any number, not just a single digit, but
+ since the other guy's assembler only does ten, we treat the first ten
+ specially.
+
+ Like someone else's assembler, we have one set of local label counters for
+ entire assembly, not one set per (sub)segment like in most assemblers. This
+ implies that one can refer to a label in another segment, and indeed some
+ crufty compilers have done just that.
+
+ Since there could be a LOT of these things, treat them as a sparse
+ array. */
+
+#define FB_LABEL_SPECIAL (10)
+
+static long fb_low_counter[FB_LABEL_SPECIAL];
+static long *fb_labels;
+static long *fb_label_instances;
+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)
+
+static void
+fb_label_init (void)
+{
+ memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter));
+}
+
+/* Add one to the instance number of this fb label. */
+
+void
+fb_label_instance_inc (long label)
+{
+ long *i;
+
+ if ((unsigned long) label < FB_LABEL_SPECIAL)
+ {
+ ++fb_low_counter[label];
+ return;
+ }
+
+ if (fb_labels != NULL)
+ {
+ for (i = fb_labels + FB_LABEL_SPECIAL;
+ i < fb_labels + fb_label_count; ++i)
+ {
+ 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. */
+
+ if (fb_labels == NULL)
+ {
+ fb_labels = XNEWVEC (long, FB_LABEL_BUMP_BY);
+ fb_label_instances = XNEWVEC (long, FB_LABEL_BUMP_BY);
+ fb_label_max = FB_LABEL_BUMP_BY;
+ fb_label_count = FB_LABEL_SPECIAL;
+
+ }
+ else if (fb_label_count == fb_label_max)
+ {
+ fb_label_max += FB_LABEL_BUMP_BY;
+ fb_labels = XRESIZEVEC (long, fb_labels, fb_label_max);
+ fb_label_instances = XRESIZEVEC (long, fb_label_instances, fb_label_max);
+ } /* if we needed to grow */
+
+ fb_labels[fb_label_count] = label;
+ fb_label_instances[fb_label_count] = 1;
+ ++fb_label_count;
+}
+
+static long
+fb_label_instance (long label)
+{
+ long *i;
+
+ if ((unsigned long) label < FB_LABEL_SPECIAL)
+ {
+ return (fb_low_counter[label]);
+ }
+
+ if (fb_labels != NULL)
+ {
+ for (i = fb_labels + FB_LABEL_SPECIAL;
+ i < fb_labels + fb_label_count; ++i)
+ {
+ if (*i == label)
+ {
+ return (fb_label_instances[i - fb_labels]);
+ } /* if we find it */
+ } /* for each existing label */
+ }
+
+ /* We didn't find the label, so this must be a reference to the
+ first instance. */
+ return 0;
+}
+
+/* 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.
+
+ dollar labels get the same treatment, except that ^A is used in
+ place of ^B. */
+
+char * /* Return local label name. */
+fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */
+ long augend /* 0 for nb, 1 for n:, nf. */)
+{
+ long i;
+ /* Returned to caller, then copied. Used for created names ("4f"). */
+ static char symbol_name_build[24];
+ char *p;
+ char *q;
+ char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */
+
+ know (n >= 0);
+#ifdef TC_MMIX
+ know ((unsigned long) augend <= 2 /* See mmix_fb_label. */);
+#else
+ know ((unsigned long) augend <= 1);
+#endif
+ p = symbol_name_build;
+#ifdef LOCAL_LABEL_PREFIX
+ *p++ = LOCAL_LABEL_PREFIX;
+#endif
+ *p++ = 'L';
+
+ /* Next code just does sprintf( {}, "%d", n); */
+ /* Label number. */
+ q = symbol_name_temporary;
+ for (*q++ = 0, i = n; i; ++q)
+ {
+ *q = i % 10 + '0';
+ i /= 10;
+ }
+ while ((*p = *--q) != '\0')
+ ++p;
+
+ *p++ = LOCAL_LABEL_CHAR; /* ^B */
+
+ /* Instance number. */
+ q = symbol_name_temporary;
+ for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q)
+ {
+ *q = i % 10 + '0';
+ i /= 10;
+ }
+ while ((*p++ = *--q) != '\0');
+
+ /* The label, as a '\0' ended string, starts at symbol_name_build. */
+ return (symbol_name_build);
+}
+
+/* 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. This is used for error messages. */
+
+char *
+decode_local_label_name (char *s)
+{
+ char *p;
+ char *symbol_decode;
+ int label_number;
+ int instance_number;
+ const char *type;
+ const char *message_format;
+ int lindex = 0;
+
+#ifdef LOCAL_LABEL_PREFIX
+ if (s[lindex] == LOCAL_LABEL_PREFIX)
+ ++lindex;
+#endif
+
+ if (s[lindex] != 'L')
+ return s;
+
+ for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p)
+ label_number = (10 * label_number) + *p - '0';
+
+ if (*p == DOLLAR_LABEL_CHAR)
+ type = "dollar";
+ else if (*p == LOCAL_LABEL_CHAR)
+ type = "fb";
+ else
+ return s;
+
+ for (instance_number = 0, p++; ISDIGIT (*p); ++p)
+ instance_number = (10 * instance_number) + *p - '0';
+
+ message_format = _("\"%d\" (instance number %d of a %s label)");
+ symbol_decode = (char *) 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 (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return resolve_symbol_value (s);
+
+ if (!s->sy_flags.sy_resolved)
+ {
+ valueT val = resolve_symbol_value (s);
+ if (!finalize_syms)
+ return val;
+ }
+ if (S_IS_WEAKREFR (s))
+ return S_GET_VALUE (s->sy_value.X_add_symbol);
+
+ if (s->sy_value.X_op != O_constant)
+ {
+ if (! s->sy_flags.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));
+ }
+ return (valueT) s->sy_value.X_add_number;
+}
+
+/* Set the value of a symbol. */
+
+void
+S_SET_VALUE (symbolS *s, valueT val)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ {
+ ((struct local_symbol *) s)->lsy_value = val;
+ return;
+ }
+
+ s->sy_value.X_op = O_constant;
+ s->sy_value.X_add_number = (offsetT) val;
+ s->sy_value.X_unsigned = 0;
+ S_CLEAR_WEAKREFR (s);
+}
+
+void
+copy_symbol_attributes (symbolS *dest, symbolS *src)
+{
+ if (LOCAL_SYMBOL_CHECK (dest))
+ dest = local_symbol_convert ((struct local_symbol *) dest);
+ if (LOCAL_SYMBOL_CHECK (src))
+ src = local_symbol_convert ((struct local_symbol *) src);
+
+ /* In an expression, transfer the settings of these flags.
+ The user can override later, of course. */
+#define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \
+ | BSF_GNU_INDIRECT_FUNCTION)
+ dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS;
+
+#ifdef OBJ_COPY_SYMBOL_ATTRIBUTES
+ OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src);
+#endif
+
+#ifdef TC_COPY_SYMBOL_ATTRIBUTES
+ TC_COPY_SYMBOL_ATTRIBUTES (dest, src);
+#endif
+}
+
+int
+S_IS_FUNCTION (symbolS *s)
+{
+ flagword flags;
+
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+
+ flags = s->bsym->flags;
+
+ return (flags & BSF_FUNCTION) != 0;
+}
+
+int
+S_IS_EXTERNAL (symbolS *s)
+{
+ flagword flags;
+
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+
+ flags = s->bsym->flags;
+
+ /* Sanity check. */
+ if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL))
+ abort ();
+
+ return (flags & BSF_GLOBAL) != 0;
+}
+
+int
+S_IS_WEAK (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ /* Conceptually, a weakrefr is weak if the referenced symbol is. We
+ could probably handle a WEAKREFR as always weak though. E.g., if
+ the referenced symbol has lost its weak status, there's no reason
+ to keep handling the weakrefr as if it was weak. */
+ if (S_IS_WEAKREFR (s))
+ return S_IS_WEAK (s->sy_value.X_add_symbol);
+ return (s->bsym->flags & BSF_WEAK) != 0;
+}
+
+int
+S_IS_WEAKREFR (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_weakrefr != 0;
+}
+
+int
+S_IS_WEAKREFD (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_weakrefd != 0;
+}
+
+int
+S_IS_COMMON (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return bfd_is_com_section (s->bsym->section);
+}
+
+int
+S_IS_DEFINED (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return ((struct local_symbol *) s)->lsy_section != undefined_section;
+ return s->bsym->section != undefined_section;
+}
+
+
+#ifndef EXTERN_FORCE_RELOC
+#define EXTERN_FORCE_RELOC IS_ELF
+#endif
+
+/* Return true for symbols that should not be reduced to section
+ symbols or eliminated from expressions, because they may be
+ overridden by the linker. */
+int
+S_FORCE_RELOC (symbolS *s, int strict)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return ((struct local_symbol *) s)->lsy_section == undefined_section;
+
+ return ((strict
+ && ((s->bsym->flags & BSF_WEAK) != 0
+ || (EXTERN_FORCE_RELOC
+ && (s->bsym->flags & BSF_GLOBAL) != 0)))
+ || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0
+ || s->bsym->section == undefined_section
+ || bfd_is_com_section (s->bsym->section));
+}
+
+int
+S_IS_DEBUG (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ if (s->bsym->flags & BSF_DEBUGGING)
+ return 1;
+ return 0;
+}
+
+int
+S_IS_LOCAL (symbolS *s)
+{
+ flagword flags;
+ const char *name;
+
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 1;
+
+ flags = s->bsym->flags;
+
+ /* 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
+ /* Keep BSF_FILE symbols in order to allow debuggers to identify
+ the source file even when the object file is stripped. */
+ && (flags & (BSF_GLOBAL | BSF_FILE)) == 0
+ && bfd_get_section (s->bsym) == absolute_section)
+ return 1;
+
+ name = S_GET_NAME (s);
+ return (name != NULL
+ && ! S_IS_DEBUG (s)
+ && (strchr (name, DOLLAR_LABEL_CHAR)
+ || strchr (name, LOCAL_LABEL_CHAR)
+ || TC_LABEL_IS_LOCAL (name)
+ || (! flag_keep_locals
+ && (bfd_is_local_label (stdoutput, s->bsym)
+ || (flag_mri
+ && name[0] == '?'
+ && name[1] == '?')))));
+}
+
+int
+S_IS_STABD (symbolS *s)
+{
+ return S_GET_NAME (s) == 0;
+}
+
+int
+S_CAN_BE_REDEFINED (const symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return (local_symbol_get_frag ((struct local_symbol *) s)
+ == &predefined_address_frag);
+ /* Permit register names to be redefined. */
+ return s->bsym->section == reg_section;
+}
+
+int
+S_IS_VOLATILE (const symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_volatile;
+}
+
+int
+S_IS_FORWARD_REF (const symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_forward_ref;
+}
+
+const char *
+S_GET_NAME (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return ((struct local_symbol *) s)->lsy_name;
+ return s->bsym->name;
+}
+
+segT
+S_GET_SEGMENT (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return ((struct local_symbol *) s)->lsy_section;
+ return s->bsym->section;
+}
+
+void
+S_SET_SEGMENT (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 (LOCAL_SYMBOL_CHECK (s))
+ {
+ if (seg == reg_section)
+ s = local_symbol_convert ((struct local_symbol *) s);
+ else
+ {
+ ((struct local_symbol *) s)->lsy_section = seg;
+ return;
+ }
+ }
+
+ if (s->bsym->flags & BSF_SECTION_SYM)
+ {
+ if (s->bsym->section != seg)
+ abort ();
+ }
+ else
+ s->bsym->section = seg;
+}
+
+void
+S_SET_EXTERNAL (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ if ((s->bsym->flags & BSF_WEAK) != 0)
+ {
+ /* Let .weak override .global. */
+ return;
+ }
+ if (s->bsym->flags & BSF_SECTION_SYM)
+ {
+ /* Do not reassign section symbols. */
+ as_warn (_("section symbols are already global"));
+ return;
+ }
+#ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
+ if (S_GET_SEGMENT (s) == reg_section)
+ {
+ as_bad ("can't make register symbol `%s' global",
+ S_GET_NAME (s));
+ return;
+ }
+#endif
+ s->bsym->flags |= BSF_GLOBAL;
+ s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK);
+
+#ifdef TE_PE
+ if (! an_external_name && S_GET_NAME(s)[0] != '.')
+ an_external_name = S_GET_NAME (s);
+#endif
+}
+
+void
+S_CLEAR_EXTERNAL (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ if ((s->bsym->flags & BSF_WEAK) != 0)
+ {
+ /* Let .weak override. */
+ return;
+ }
+ s->bsym->flags |= BSF_LOCAL;
+ s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK);
+}
+
+void
+S_SET_WEAK (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+#ifdef obj_set_weak_hook
+ obj_set_weak_hook (s);
+#endif
+ s->bsym->flags |= BSF_WEAK;
+ s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL);
+}
+
+void
+S_SET_WEAKREFR (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_weakrefr = 1;
+ /* If the alias was already used, make sure we mark the target as
+ used as well, otherwise it might be dropped from the symbol
+ table. This may have unintended side effects if the alias is
+ later redirected to another symbol, such as keeping the unused
+ previous target in the symbol table. Since it will be weak, it's
+ not a big deal. */
+ if (s->sy_flags.sy_used)
+ symbol_mark_used (s->sy_value.X_add_symbol);
+}
+
+void
+S_CLEAR_WEAKREFR (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_weakrefr = 0;
+}
+
+void
+S_SET_WEAKREFD (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_weakrefd = 1;
+ S_SET_WEAK (s);
+}
+
+void
+S_CLEAR_WEAKREFD (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ if (s->sy_flags.sy_weakrefd)
+ {
+ s->sy_flags.sy_weakrefd = 0;
+ /* If a weakref target symbol is weak, then it was never
+ referenced directly before, not even in a .global directive,
+ so decay it to local. If it remains undefined, it will be
+ later turned into a global, like any other undefined
+ symbol. */
+ if (s->bsym->flags & BSF_WEAK)
+ {
+#ifdef obj_clear_weak_hook
+ obj_clear_weak_hook (s);
+#endif
+ s->bsym->flags &= ~BSF_WEAK;
+ s->bsym->flags |= BSF_LOCAL;
+ }
+ }
+}
+
+void
+S_SET_THREAD_LOCAL (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ if (bfd_is_com_section (s->bsym->section)
+ && (s->bsym->flags & BSF_THREAD_LOCAL) != 0)
+ return;
+ s->bsym->flags |= BSF_THREAD_LOCAL;
+ if ((s->bsym->flags & BSF_FUNCTION) != 0)
+ as_bad (_("Accessing function `%s' as thread-local object"),
+ S_GET_NAME (s));
+ else if (! bfd_is_und_section (s->bsym->section)
+ && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0)
+ as_bad (_("Accessing `%s' as thread-local object"),
+ S_GET_NAME (s));
+}
+
+void
+S_SET_NAME (symbolS *s, const char *name)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ {
+ ((struct local_symbol *) s)->lsy_name = name;
+ return;
+ }
+ s->bsym->name = name;
+}
+
+void
+S_SET_VOLATILE (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_volatile = 1;
+}
+
+void
+S_CLEAR_VOLATILE (symbolS *s)
+{
+ if (!LOCAL_SYMBOL_CHECK (s))
+ s->sy_flags.sy_volatile = 0;
+}
+
+void
+S_SET_FORWARD_REF (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_forward_ref = 1;
+}
+
+/* Return the previous symbol in a chain. */
+
+symbolS *
+symbol_previous (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ abort ();
+ return s->sy_previous;
+}
+
+/* Return the next symbol in a chain. */
+
+symbolS *
+symbol_next (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ abort ();
+ return s->sy_next;
+}
+
+/* Return a pointer to the value of a symbol as an expression. */
+
+expressionS *
+symbol_get_value_expression (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ return &s->sy_value;
+}
+
+/* Set the value of a symbol to an expression. */
+
+void
+symbol_set_value_expression (symbolS *s, const expressionS *exp)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_value = *exp;
+ S_CLEAR_WEAKREFR (s);
+}
+
+/* Return whether 2 symbols are the same. */
+
+int
+symbol_same_p (symbolS *s1, symbolS *s2)
+{
+ if (s1->sy_flags.sy_local_symbol
+ && local_symbol_converted_p ((struct local_symbol *) s1))
+ s1 = local_symbol_get_real_symbol ((struct local_symbol *) s1);
+ if (s2->sy_flags.sy_local_symbol
+ && local_symbol_converted_p ((struct local_symbol *) s2))
+ s2 = local_symbol_get_real_symbol ((struct local_symbol *) s2);
+ return s1 == s2;
+}
+
+/* Return a pointer to the X_add_number component of a symbol. */
+
+offsetT *
+symbol_X_add_number (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return (offsetT *) &((struct local_symbol *) s)->lsy_value;
+
+ return &s->sy_value.X_add_number;
+}
+
+/* Set the value of SYM to the current position in the current segment. */
+
+void
+symbol_set_value_now (symbolS *sym)
+{
+ S_SET_SEGMENT (sym, now_seg);
+ S_SET_VALUE (sym, frag_now_fix ());
+ symbol_set_frag (sym, frag_now);
+}
+
+/* Set the frag of a symbol. */
+
+void
+symbol_set_frag (symbolS *s, fragS *f)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ {
+ local_symbol_set_frag ((struct local_symbol *) s, f);
+ return;
+ }
+ s->sy_frag = f;
+ S_CLEAR_WEAKREFR (s);
+}
+
+/* Return the frag of a symbol. */
+
+fragS *
+symbol_get_frag (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return local_symbol_get_frag ((struct local_symbol *) s);
+ return s->sy_frag;
+}
+
+/* Mark a symbol as having been used. */
+
+void
+symbol_mark_used (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_used = 1;
+ if (S_IS_WEAKREFR (s))
+ symbol_mark_used (s->sy_value.X_add_symbol);
+}
+
+/* Clear the mark of whether a symbol has been used. */
+
+void
+symbol_clear_used (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_used = 0;
+}
+
+/* Return whether a symbol has been used. */
+
+int
+symbol_used_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 1;
+ return s->sy_flags.sy_used;
+}
+
+/* Mark a symbol as having been used in a reloc. */
+
+void
+symbol_mark_used_in_reloc (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_used_in_reloc = 1;
+}
+
+/* Clear the mark of whether a symbol has been used in a reloc. */
+
+void
+symbol_clear_used_in_reloc (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_used_in_reloc = 0;
+}
+
+/* Return whether a symbol has been used in a reloc. */
+
+int
+symbol_used_in_reloc_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_used_in_reloc;
+}
+
+/* Mark a symbol as an MRI common symbol. */
+
+void
+symbol_mark_mri_common (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_flags.sy_mri_common = 1;
+}
+
+/* Clear the mark of whether a symbol is an MRI common symbol. */
+
+void
+symbol_clear_mri_common (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_mri_common = 0;
+}
+
+/* Return whether a symbol is an MRI common symbol. */
+
+int
+symbol_mri_common_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_mri_common;
+}
+
+/* Mark a symbol as having been written. */
+
+void
+symbol_mark_written (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_written = 1;
+}
+
+/* Clear the mark of whether a symbol has been written. */
+
+void
+symbol_clear_written (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return;
+ s->sy_flags.sy_written = 0;
+}
+
+/* Return whether a symbol has been written. */
+
+int
+symbol_written_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_flags.sy_written;
+}
+
+/* Mark a symbol has having been resolved. */
+
+void
+symbol_mark_resolved (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ {
+ local_symbol_mark_resolved ((struct local_symbol *) s);
+ return;
+ }
+ s->sy_flags.sy_resolved = 1;
+}
+
+/* Return whether a symbol has been resolved. */
+
+int
+symbol_resolved_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return local_symbol_resolved_p ((struct local_symbol *) s);
+ return s->sy_flags.sy_resolved;
+}
+
+/* Return whether a symbol is a section symbol. */
+
+int
+symbol_section_p (symbolS *s ATTRIBUTE_UNUSED)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return (s->bsym->flags & BSF_SECTION_SYM) != 0;
+}
+
+/* Return whether a symbol is equated to another symbol. */
+
+int
+symbol_equated_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_value.X_op == O_symbol;
+}
+
+/* Return whether a symbol is equated to another symbol, and should be
+ treated specially when writing out relocs. */
+
+int
+symbol_equated_reloc_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ /* X_op_symbol, normally not used for O_symbol, is set by
+ resolve_symbol_value to flag expression syms that have been
+ equated. */
+ return (s->sy_value.X_op == O_symbol
+#if defined (OBJ_COFF) && defined (TE_PE)
+ && ! S_IS_WEAK (s)
+#endif
+ && ((s->sy_flags.sy_resolved && s->sy_value.X_op_symbol != NULL)
+ || ! S_IS_DEFINED (s)
+ || S_IS_COMMON (s)));
+}
+
+/* Return whether a symbol has a constant value. */
+
+int
+symbol_constant_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 1;
+ return s->sy_value.X_op == O_constant;
+}
+
+/* Return whether a symbol was cloned and thus removed from the global
+ symbol list. */
+
+int
+symbol_shadow_p (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return 0;
+ return s->sy_next == s;
+}
+
+/* Return the BFD symbol for a symbol. */
+
+asymbol *
+symbol_get_bfdsym (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ return s->bsym;
+}
+
+/* Set the BFD symbol for a symbol. */
+
+void
+symbol_set_bfdsym (symbolS *s, asymbol *bsym)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ /* Usually, it is harmless to reset a symbol to a BFD section
+ symbol. For example, obj_elf_change_section sets the BFD symbol
+ of an old symbol with the newly created section symbol. But when
+ we have multiple sections with the same name, the newly created
+ section may have the same name as an old section. We check if the
+ old symbol has been already marked as a section symbol before
+ resetting it. */
+ if ((s->bsym->flags & BSF_SECTION_SYM) == 0)
+ s->bsym = bsym;
+ /* else XXX - What do we do now ? */
+}
+
+#ifdef OBJ_SYMFIELD_TYPE
+
+/* Get a pointer to the object format information for a symbol. */
+
+OBJ_SYMFIELD_TYPE *
+symbol_get_obj (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ return &s->sy_obj;
+}
+
+/* Set the object format information for a symbol. */
+
+void
+symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_obj = *o;
+}
+
+#endif /* OBJ_SYMFIELD_TYPE */
+
+#ifdef TC_SYMFIELD_TYPE
+
+/* Get a pointer to the processor information for a symbol. */
+
+TC_SYMFIELD_TYPE *
+symbol_get_tc (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ return &s->sy_tc;
+}
+
+/* Set the processor information for a symbol. */
+
+void
+symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ s = local_symbol_convert ((struct local_symbol *) s);
+ s->sy_tc = *o;
+}
+
+#endif /* TC_SYMFIELD_TYPE */
+
+void
+symbol_begin (void)
+{
+ symbol_lastP = NULL;
+ symbol_rootP = NULL; /* In case we have 0 symbols (!!) */
+ sy_hash = hash_new ();
+ local_hash = hash_new ();
+
+ memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol));
+#if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL)
+ abs_symbol.bsym = bfd_abs_section_ptr->symbol;
+#endif
+ abs_symbol.sy_value.X_op = O_constant;
+ abs_symbol.sy_frag = &zero_address_frag;
+
+ if (LOCAL_LABELS_FB)
+ fb_label_init ();
+}
+
+void
+dot_symbol_init (void)
+{
+ dot_symbol.bsym = bfd_make_empty_symbol (stdoutput);
+ if (dot_symbol.bsym == NULL)
+ as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ()));
+ dot_symbol.bsym->name = ".";
+ dot_symbol.sy_flags.sy_forward_ref = 1;
+ dot_symbol.sy_value.X_op = O_constant;
+}
+\f
+int indent_level;
+
+/* Maximum indent level.
+ Available for modification inside a gdb session. */
+static int max_indent_level = 8;
+
+void
+print_symbol_value_1 (FILE *file, symbolS *sym)
+{
+ const char *name = S_GET_NAME (sym);
+ if (!name || !name[0])
+ name = "(unnamed)";
+ fprintf (file, "sym ");
+ fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym));
+ fprintf (file, " %s", name);
+
+ if (LOCAL_SYMBOL_CHECK (sym))
+ {
+ struct local_symbol *locsym = (struct local_symbol *) sym;
+
+ if (local_symbol_get_frag (locsym) != & zero_address_frag
+ && local_symbol_get_frag (locsym) != NULL)
+ {
+ fprintf (file, " frag ");
+ fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) local_symbol_get_frag (locsym)));
+ }
+ if (local_symbol_resolved_p (locsym))
+ fprintf (file, " resolved");
+ fprintf (file, " local");
+ }
+ else
+ {
+ if (sym->sy_frag != &zero_address_frag)
+ {
+ fprintf (file, " frag ");
+ fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->sy_frag));
+ }
+ if (sym->sy_flags.sy_written)
+ fprintf (file, " written");
+ if (sym->sy_flags.sy_resolved)
+ fprintf (file, " resolved");
+ else if (sym->sy_flags.sy_resolving)
+ fprintf (file, " resolving");
+ if (sym->sy_flags.sy_used_in_reloc)
+ fprintf (file, " used-in-reloc");
+ if (sym->sy_flags.sy_used)
+ fprintf (file, " used");
+ if (S_IS_LOCAL (sym))
+ fprintf (file, " local");
+ if (S_IS_EXTERNAL (sym))
+ fprintf (file, " extern");
+ if (S_IS_WEAK (sym))
+ fprintf (file, " weak");
+ if (S_IS_DEBUG (sym))
+ fprintf (file, " debug");
+ if (S_IS_DEFINED (sym))
+ fprintf (file, " defined");
+ }
+ if (S_IS_WEAKREFR (sym))
+ fprintf (file, " weakrefr");
+ if (S_IS_WEAKREFD (sym))
+ fprintf (file, " weakrefd");
+ fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym)));
+ if (symbol_resolved_p (sym))
+ {
+ segT s = S_GET_SEGMENT (sym);
+
+ if (s != undefined_section
+ && s != expr_section)
+ fprintf (file, " %lx", (unsigned 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, "");
+ if (LOCAL_SYMBOL_CHECK (sym))
+ fprintf (file, "constant %lx",
+ (unsigned long) ((struct local_symbol *) sym)->lsy_value);
+ else
+ print_expr_1 (file, &sym->sy_value);
+ fprintf (file, ">");
+ indent_level--;
+ }
+ fflush (file);
+}
+
+void
+print_symbol_value (symbolS *sym)
+{
+ indent_level = 0;
+ print_symbol_value_1 (stderr, sym);
+ fprintf (stderr, "\n");
+}
+
+static void
+print_binary (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 *file, expressionS *exp)
+{
+ fprintf (file, "expr ");
+ fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp));
+ fprintf (file, " ");
+ 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", (unsigned 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, "",
+ (unsigned 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 (expressionS *exp)
+{
+ print_expr_1 (stderr, exp);
+ fprintf (stderr, "\n");
+}
+
+void
+symbol_print_statistics (FILE *file)
+{
+ hash_print_statistics (file, "symbol table", sy_hash);
+ hash_print_statistics (file, "mini local symbol table", local_hash);
+ fprintf (file, "%lu mini local symbols created, %lu converted\n",
+ local_symbol_count, local_symbol_conversion_count);
+}
+
+#ifdef OBJ_COMPLEX_RELC
+
+/* Convert given symbol to a new complex-relocation symbol name. This
+ may be a recursive function, since it might be called for non-leaf
+ nodes (plain symbols) in the expression tree. The caller owns the
+ returning string, so should free it eventually. Errors are
+ indicated via as_bad and a NULL return value. The given symbol
+ is marked with sy_used_in_reloc. */
+
+char *
+symbol_relc_make_sym (symbolS * sym)
+{
+ char * terminal = NULL;
+ const char * sname;
+ char typetag;
+ int sname_len;
+
+ gas_assert (sym != NULL);
+
+ /* Recurse to symbol_relc_make_expr if this symbol
+ is defined as an expression or a plain value. */
+ if ( S_GET_SEGMENT (sym) == expr_section
+ || S_GET_SEGMENT (sym) == absolute_section)
+ return symbol_relc_make_expr (& sym->sy_value);
+
+ /* This may be a "fake symbol" L0\001, referring to ".".
+ Write out a special null symbol to refer to this position. */
+ if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME))
+ return xstrdup (".");
+
+ /* We hope this is a plain leaf symbol. Construct the encoding
+ as {S,s}II...:CCCCCCC....
+ where 'S'/'s' means section symbol / plain symbol
+ III is decimal for the symbol name length
+ CCC is the symbol name itself. */
+ symbol_mark_used_in_reloc (sym);
+
+ sname = S_GET_NAME (sym);
+ sname_len = strlen (sname);
+ typetag = symbol_section_p (sym) ? 'S' : 's';
+
+ terminal = XNEWVEC (char, (1 /* S or s */
+ + 8 /* sname_len in decimal */
+ + 1 /* _ spacer */
+ + sname_len /* name itself */
+ + 1 /* \0 */ ));
+
+ sprintf (terminal, "%c%d:%s", typetag, sname_len, sname);
+ return terminal;
+}
+
+/* Convert given value to a new complex-relocation symbol name. This
+ is a non-recursive function, since it is be called for leaf nodes
+ (plain values) in the expression tree. The caller owns the
+ returning string, so should free() it eventually. No errors. */
+
+char *
+symbol_relc_make_value (offsetT val)
+{
+ char * terminal = XNEWVEC (char, 28); /* Enough for long long. */
+
+ terminal[0] = '#';
+ bfd_sprintf_vma (stdoutput, terminal + 1, val);
+ return terminal;
+}
+
+/* Convert given expression to a new complex-relocation symbol name.
+ This is a recursive function, since it traverses the entire given
+ expression tree. The caller owns the returning string, so should
+ free() it eventually. Errors are indicated via as_bad() and a NULL
+ return value. */
+
+char *
+symbol_relc_make_expr (expressionS * exp)
+{
+ const char * opstr = NULL; /* Operator prefix string. */
+ int arity = 0; /* Arity of this operator. */
+ char * operands[3]; /* Up to three operands. */
+ char * concat_string = NULL;
+
+ operands[0] = operands[1] = operands[2] = NULL;
+
+ gas_assert (exp != NULL);
+
+ /* Match known operators -> fill in opstr, arity, operands[] and fall
+ through to construct subexpression fragments; may instead return
+ string directly for leaf nodes. */
+
+ /* See expr.h for the meaning of all these enums. Many operators
+ have an unnatural arity (X_add_number implicitly added). The
+ conversion logic expands them to explicit "+" subexpressions. */
+
+ switch (exp->X_op)
+ {
+ default:
+ as_bad ("Unknown expression operator (enum %d)", exp->X_op);
+ break;
+
+ /* Leaf nodes. */
+ case O_constant:
+ return symbol_relc_make_value (exp->X_add_number);
+
+ case O_symbol:
+ if (exp->X_add_number)
+ {
+ arity = 2;
+ opstr = "+";
+ operands[0] = symbol_relc_make_sym (exp->X_add_symbol);
+ operands[1] = symbol_relc_make_value (exp->X_add_number);
+ break;
+ }
+ else
+ return symbol_relc_make_sym (exp->X_add_symbol);
+
+ /* Helper macros for nesting nodes. */
+
+#define HANDLE_XADD_OPT1(str_) \
+ if (exp->X_add_number) \
+ { \
+ arity = 2; \
+ opstr = "+:" str_; \
+ operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \
+ operands[1] = symbol_relc_make_value (exp->X_add_number); \
+ break; \
+ } \
+ else \
+ { \
+ arity = 1; \
+ opstr = str_; \
+ operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \
+ } \
+ break
+
+#define HANDLE_XADD_OPT2(str_) \
+ if (exp->X_add_number) \
+ { \
+ arity = 3; \
+ opstr = "+:" str_; \
+ operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \
+ operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \
+ operands[2] = symbol_relc_make_value (exp->X_add_number); \
+ } \
+ else \
+ { \
+ arity = 2; \
+ opstr = str_; \
+ operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \
+ operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \
+ } \
+ break
+
+ /* Nesting nodes. */
+
+ case O_uminus: HANDLE_XADD_OPT1 ("0-");
+ case O_bit_not: HANDLE_XADD_OPT1 ("~");
+ case O_logical_not: HANDLE_XADD_OPT1 ("!");
+ case O_multiply: HANDLE_XADD_OPT2 ("*");
+ case O_divide: HANDLE_XADD_OPT2 ("/");
+ case O_modulus: HANDLE_XADD_OPT2 ("%");
+ case O_left_shift: HANDLE_XADD_OPT2 ("<<");
+ case O_right_shift: HANDLE_XADD_OPT2 (">>");
+ case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|");
+ case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^");
+ case O_bit_and: HANDLE_XADD_OPT2 ("&");
+ case O_add: HANDLE_XADD_OPT2 ("+");
+ case O_subtract: HANDLE_XADD_OPT2 ("-");
+ case O_eq: HANDLE_XADD_OPT2 ("==");
+ case O_ne: HANDLE_XADD_OPT2 ("!=");
+ case O_lt: HANDLE_XADD_OPT2 ("<");
+ case O_le: HANDLE_XADD_OPT2 ("<=");
+ case O_ge: HANDLE_XADD_OPT2 (">=");
+ case O_gt: HANDLE_XADD_OPT2 (">");
+ case O_logical_and: HANDLE_XADD_OPT2 ("&&");
+ case O_logical_or: HANDLE_XADD_OPT2 ("||");
+ }
+
+ /* Validate & reject early. */
+ if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0)))
+ opstr = NULL;
+ if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0)))
+ opstr = NULL;
+ if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0)))
+ opstr = NULL;
+
+ if (opstr == NULL)
+ concat_string = NULL;
+ else if (arity == 0)
+ concat_string = xstrdup (opstr);
+ else if (arity == 1)
+ concat_string = concat (opstr, ":", operands[0], (char *) NULL);
+ else if (arity == 2)
+ concat_string = concat (opstr, ":", operands[0], ":", operands[1],
+ (char *) NULL);
+ else
+ concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":",
+ operands[2], (char *) NULL);
+
+ /* Free operand strings (not opstr). */
+ if (arity >= 1) xfree (operands[0]);
+ if (arity >= 2) xfree (operands[1]);
+ if (arity >= 3) xfree (operands[2]);
+
+ return concat_string;
+}
+
+#endif