#include "safe-ctype.h"
#include "obstack.h" /* For "symbols.h" */
#include "subsegs.h"
-#include "struc-symbol.h"
#include "write.h"
+struct symbol_flags
+{
+ /* Whether the symbol is a local_symbol. */
+ unsigned int sy_local_symbol : 1;
+
+ /* Weather symbol has been written. */
+ unsigned int sy_written : 1;
+
+ /* Whether symbol value has been completely resolved (used during
+ final pass over symbol table). */
+ unsigned int sy_resolved : 1;
+
+ /* Whether the symbol value is currently being resolved (used to
+ detect loops in symbol dependencies). */
+ unsigned int sy_resolving : 1;
+
+ /* Whether the symbol value is used in a reloc. This is used to
+ ensure that symbols used in relocs are written out, even if they
+ are local and would otherwise not be. */
+ unsigned int sy_used_in_reloc : 1;
+
+ /* Whether the symbol is used as an operand or in an expression.
+ NOTE: Not all the backends keep this information accurate;
+ backends which use this bit are responsible for setting it when
+ a symbol is used in backend routines. */
+ unsigned int sy_used : 1;
+
+ /* Whether the symbol can be re-defined. */
+ unsigned int sy_volatile : 1;
+
+ /* Whether the symbol is a forward reference. */
+ unsigned int sy_forward_ref : 1;
+
+ /* This is set if the symbol is defined in an MRI common section.
+ We handle such sections as single common symbols, so symbols
+ defined within them must be treated specially by the relocation
+ routines. */
+ unsigned int sy_mri_common : 1;
+
+ /* This is set if the symbol is set with a .weakref directive. */
+ unsigned int sy_weakrefr : 1;
+
+ /* This is set when the symbol is referenced as part of a .weakref
+ directive, but only if the symbol was not in the symbol table
+ before. It is cleared as soon as any direct reference to the
+ symbol is present. */
+ unsigned int sy_weakrefd : 1;
+};
+
+/* The information we keep for a symbol. Note that the symbol table
+ holds pointers both to this and to local_symbol structures. See
+ below. */
+
+struct symbol
+{
+ /* Symbol flags. */
+ struct symbol_flags sy_flags;
+
+ /* BFD symbol */
+ asymbol *bsym;
+
+ /* The value of the symbol. */
+ expressionS sy_value;
+
+ /* Forwards and (optionally) backwards chain pointers. */
+ struct symbol *sy_next;
+ struct symbol *sy_previous;
+
+ /* Pointer to the frag this symbol is attached to, if any.
+ Otherwise, NULL. */
+ struct frag *sy_frag;
+
+#ifdef OBJ_SYMFIELD_TYPE
+ OBJ_SYMFIELD_TYPE sy_obj;
+#endif
+
+#ifdef TC_SYMFIELD_TYPE
+ TC_SYMFIELD_TYPE sy_tc;
+#endif
+
+#ifdef TARGET_SYMBOL_FIELDS
+ TARGET_SYMBOL_FIELDS
+#endif
+};
+
+/* A pointer in the symbol may point to either a complete symbol
+ (struct symbol above) or to a local symbol (struct local_symbol
+ defined here). The symbol code can detect the case by examining
+ the first field. It is always NULL for a local symbol.
+
+ We do this because we ordinarily only need a small amount of
+ information for a local symbol. The symbol table takes up a lot of
+ space, and storing less information for a local symbol can make a
+ big difference in assembler memory usage when assembling a large
+ file. */
+
+struct local_symbol
+{
+ /* Symbol flags. Only sy_local_symbol and sy_resolved are relevant. */
+ struct symbol_flags lsy_flags;
+
+ /* The symbol section. This also serves as a flag. If this is
+ reg_section, then this symbol has been converted into a regular
+ symbol, and lsy_sym points to it. */
+ segT lsy_section;
+
+ /* The symbol name. */
+ const char *lsy_name;
+
+ /* The symbol frag or the real symbol, depending upon the value in
+ lsy_section. */
+ union
+ {
+ fragS *lsy_frag;
+ symbolS *lsy_sym;
+ } u;
+
+ /* The value of the symbol. */
+ valueT lsy_value;
+
+#ifdef TC_LOCAL_SYMFIELD_TYPE
+ TC_LOCAL_SYMFIELD_TYPE lsy_tc;
+#endif
+};
+
+#define local_symbol_converted_p(l) ((l)->lsy_section == reg_section)
+#define local_symbol_mark_converted(l) ((l)->lsy_section = reg_section)
+#define local_symbol_resolved_p(l) ((l)->lsy_flags.sy_resolved)
+#define local_symbol_mark_resolved(l) ((l)->lsy_flags.sy_resolved = 1)
+#define local_symbol_get_frag(l) ((l)->u.lsy_frag)
+#define local_symbol_set_frag(l, f) ((l)->u.lsy_frag = (f))
+#define local_symbol_get_real_symbol(l) ((l)->u.lsy_sym)
+#define local_symbol_set_real_symbol(l, s) ((l)->u.lsy_sym = (s))
+
/* This is non-zero if symbols are case sensitive, which is the
default. */
int symbols_case_sensitive = 1;
gas_assert (lastP == symbolP);
}
+int
+symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP)
+{
+ return (!LOCAL_SYMBOL_CHECK (s)
+ && ((s->sy_next != s
+ && s->sy_next != NULL
+ && s->sy_next->sy_previous == s)
+ || s == lastPP)
+ && ((s->sy_previous != s
+ && s->sy_previous != NULL
+ && s->sy_previous->sy_next == s)
+ || s == rootPP));
+}
+
#ifdef OBJ_COMPLEX_RELC
static int
return s->sy_next == s;
}
+/* If S was created as a struct symbol, return S, otherwise if S is a
+ converted local_symbol return the converted symbol, otherwise
+ return NULL. */
+
+symbolS *
+symbol_symbolS (symbolS *s)
+{
+ if (LOCAL_SYMBOL_CHECK (s))
+ return NULL;
+ return s;
+}
+
/* Return the BFD symbol for a symbol. */
asymbol *
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