Add support for the xdef and xref pseudo-ops to the Z80 assembler.

[deliverable/binutils-gdb.git] / gas / frags.h

diff --git a/gas/frags.h b/gas/frags.h
index e4cb0509dbc50ce7f4b5dc1abd26b9581a971dd5..39005ae71bc93f8a4985641dbd82b018f78ea0c1 100644 (file)
--- a/gas/frags.h
+++ b/gas/frags.h
@@ -1,12 +1,11 @@
 /* frags.h - Header file for the frag concept.
 /* frags.h - Header file for the frag concept.

-   Copyright 1987, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001
-   Free Software Foundation, Inc.
+   Copyright (C) 1987-2020 Free Software Foundation, Inc.

 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)

    any later version.
 
    GAS is distributed in the hope that it will be useful,
    any later version.
 
    GAS is distributed in the hope that it will be useful,


@@ -16,15 +15,13 @@
 
    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
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free

-   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA.  */
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */

 
 #ifndef FRAGS_H
 #define FRAGS_H
 
 
 #ifndef FRAGS_H
 #define FRAGS_H
 

-#ifdef ANSI_PROTOTYPES

 struct obstack;
 struct obstack;

-#endif

 
 /* A code fragment (frag) is some known number of chars, followed by some
    unknown number of chars. Typically the unknown number of chars is an
 
 /* A code fragment (frag) is some known number of chars, followed by some
    unknown number of chars. Typically the unknown number of chars is an


@@ -38,34 +35,51 @@ struct obstack;
    of a particular frag}+offset.
 
    BUG: it may be smarter to have a single pointer off to various different
    of a particular frag}+offset.
 
    BUG: it may be smarter to have a single pointer off to various different

-   notes for different frag kinds.  See how code pans.   */
+   notes for different frag kinds.  See how code pans.  */

 
 struct frag {
   /* Object file address (as an octet offset).  */
   addressT fr_address;
 
 struct frag {
   /* Object file address (as an octet offset).  */
   addressT fr_address;

-  /* Chain forward; ascending address order.  Rooted in frch_root.  */
-  struct frag *fr_next;
+  /* When relaxing multiple times, remember the address the frag had
+     in the last relax pass.  */
+  addressT last_fr_address;

 
   /* (Fixed) number of octets we know we have.  May be 0.  */
 
   /* (Fixed) number of octets we know we have.  May be 0.  */

-  offsetT fr_fix;
+  valueT fr_fix;

   /* May be used for (Variable) number of octets after above.
      The generic frag handling code no longer makes any use of fr_var.  */
   offsetT fr_var;
   /* For variable-length tail.  */
   /* May be used for (Variable) number of octets after above.
      The generic frag handling code no longer makes any use of fr_var.  */
   offsetT fr_var;
   /* For variable-length tail.  */

-  symbolS *fr_symbol;
-  /* For variable-length tail.  */

   offsetT fr_offset;
   offsetT fr_offset;

+  /* For variable-length tail.  */
+  symbolS *fr_symbol;

   /* Points to opcode low addr byte, for relaxation.  */
   char *fr_opcode;
 
   /* Points to opcode low addr byte, for relaxation.  */
   char *fr_opcode;
 

+  /* Chain forward; ascending address order.  Rooted in frch_root.  */
+  struct frag *fr_next;
+
+  /* Where the frag was created, or where it became a variant frag.  */
+  const char *fr_file;
+  unsigned int fr_line;
+

 #ifndef NO_LISTING
   struct list_info_struct *line;
 #endif
 
 #ifndef NO_LISTING
   struct list_info_struct *line;
 #endif
 

+  /* A serial number for a sequence of frags having at most one alignment
+     or org frag, and that at the tail of the sequence.  */
+  unsigned int region:16;
+

   /* Flipped each relax pass so we can easily determine whether
      fr_address has been adjusted.  */
   unsigned int relax_marker:1;
 
   /* Flipped each relax pass so we can easily determine whether
      fr_address has been adjusted.  */
   unsigned int relax_marker:1;
 

+  /* Used to ensure that all insns are emitted on proper address
+     boundaries.  */
+  unsigned int has_code:1;
+  unsigned int insn_addr:6;
+

   /* What state is my tail in? */
   relax_stateT fr_type;
   relax_substateT fr_subtype;
   /* What state is my tail in? */
   relax_stateT fr_type;
   relax_substateT fr_subtype;


@@ -85,10 +99,9 @@ struct frag {
 #ifdef TC_FRAG_TYPE
   TC_FRAG_TYPE tc_frag_data;
 #endif
 #ifdef TC_FRAG_TYPE
   TC_FRAG_TYPE tc_frag_data;
 #endif

-
-  /* Where the frag was created, or where it became a variant frag.  */
-  char *fr_file;
-  unsigned int fr_line;
+#ifdef OBJ_FRAG_TYPE
+  OBJ_FRAG_TYPE obj_frag_data;
+#endif

 
   /* Data begins here.  */
   char fr_literal[1];
 
   /* Data begins here.  */
   char fr_literal[1];


@@ -102,58 +115,49 @@ struct frag {
    however, included in frchain_now.  The fr_fix field is bogus;
    instead, use frag_now_fix ().  */
 COMMON fragS *frag_now;
    however, included in frchain_now.  The fr_fix field is bogus;
    instead, use frag_now_fix ().  */
 COMMON fragS *frag_now;

-extern addressT frag_now_fix PARAMS ((void));
-extern addressT frag_now_fix_octets PARAMS ((void));
+extern addressT frag_now_fix (void);
+extern addressT frag_now_fix_octets (void);

 
 /* For foreign-segment symbol fixups.  */
 COMMON fragS zero_address_frag;
 
 /* For foreign-segment symbol fixups.  */
 COMMON fragS zero_address_frag;

-/* For local common (N_BSS segment) fixups.  */
-COMMON fragS bss_address_frag;
-
-#if 0
-/* A macro to speed up appending exactly 1 char to current frag.  */
-/* JF changed < 1 to <= 1 to avoid a race conditon.  */
-#define FRAG_APPEND_1_CHAR(datum)                      \
-{                                                      \
-  if (obstack_room (&frags) <= 1)                      \
-    {                                                  \
-      frag_wane (frag_now);                            \
-      frag_new (0);                                    \
-    }                                                  \
-  obstack_1grow (&frags, datum);                       \
-}
-#else
-extern void frag_append_1_char PARAMS ((int));
+COMMON fragS predefined_address_frag;
+
+extern void frag_append_1_char (int);

 #define FRAG_APPEND_1_CHAR(X) frag_append_1_char (X)
 #define FRAG_APPEND_1_CHAR(X) frag_append_1_char (X)

-#endif

 
 

-void frag_init PARAMS ((void));
-fragS *frag_alloc PARAMS ((struct obstack *));
-void frag_grow PARAMS ((unsigned int nchars));
-char *frag_more PARAMS ((int nchars));
-void frag_align PARAMS ((int alignment, int fill_character, int max));
-void frag_align_pattern PARAMS ((int alignment,
-                                const char *fill_pattern,
-                                int n_fill,
-                                int max));
-void frag_align_code PARAMS ((int alignment, int max));
-void frag_new PARAMS ((int old_frags_var_max_size));
-void frag_wane PARAMS ((fragS * fragP));
-
-char *frag_variant PARAMS ((relax_stateT type,
-                           int max_chars,
-                           int var,
-                           relax_substateT subtype,
-                           symbolS * symbol,
-                           offsetT offset,
-                           char *opcode));
-
-char *frag_var PARAMS ((relax_stateT type,
-                       int max_chars,
-                       int var,
-                       relax_substateT subtype,
-                       symbolS * symbol,
-                       offsetT offset,
-                       char *opcode));
+void frag_init (void);
+fragS *frag_alloc (struct obstack *);
+void frag_grow (size_t nchars);
+char *frag_more (size_t nchars);
+void frag_align (int alignment, int fill_character, int max);
+void frag_align_pattern (int alignment, const char *fill_pattern,
+                        size_t n_fill, int max);
+void frag_align_code (int alignment, int max);
+void frag_new (size_t old_frags_var_max_size);
+void frag_wane (fragS * fragP);
+size_t frag_room (void);
+
+char *frag_variant (relax_stateT type,
+                   size_t max_chars,
+                   size_t var,
+                   relax_substateT subtype,
+                   symbolS * symbol,
+                   offsetT offset,
+                   char *opcode);
+
+char *frag_var (relax_stateT type,
+               size_t max_chars,
+               size_t var,
+               relax_substateT subtype,
+               symbolS * symbol,
+               offsetT offset,
+               char *opcode);
+
+bfd_boolean frag_offset_fixed_p (const fragS *, const fragS *, offsetT *);
+bfd_boolean frag_gtoffset_p (valueT, const fragS *, valueT, const fragS *,
+                            offsetT *);
+
+int get_frag_count (void);
+void clear_frag_count (void);

 
 #endif /* FRAGS_H */
 
 #endif /* FRAGS_H */