gdb: add target_ops::supports_displaced_step

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

diff --git a/gas/frags.h b/gas/frags.h
index 73b71821b9c816f86de52043d471165e0b225842..39005ae71bc93f8a4985641dbd82b018f78ea0c1 100644 (file)
--- a/gas/frags.h
+++ b/gas/frags.h
@@ -1,12 +1,11 @@
 /* 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
-   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,
@@ -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
-   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
 
-#ifdef ANSI_PROTOTYPES
 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
@@ -48,7 +45,7 @@ struct frag {
   addressT last_fr_address;
 
   /* (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;
@@ -63,17 +60,26 @@ struct frag {
   struct frag *fr_next;
 
   /* Where the frag was created, or where it became a variant frag.  */
-  char *fr_file;
+  const char *fr_file;
   unsigned int fr_line;
 
 #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;
 
+  /* 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;
@@ -93,6 +99,9 @@ struct frag {
 #ifdef TC_FRAG_TYPE
   TC_FRAG_TYPE tc_frag_data;
 #endif
+#ifdef OBJ_FRAG_TYPE
+  OBJ_FRAG_TYPE obj_frag_data;
+#endif
 
   /* Data begins here.  */
   char fr_literal[1];
@@ -111,51 +120,44 @@ extern addressT frag_now_fix_octets (void);
 
 /* 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 condition.  */
-#define FRAG_APPEND_1_CHAR(datum)                      \
-{                                                      \
-  if (obstack_room (&frags) <= 1)                      \
-    {                                                  \
-      frag_wane (frag_now);                            \
-      frag_new (0);                                    \
-    }                                                  \
-  obstack_1grow (&frags, datum);                       \
-}
-#else
+COMMON fragS predefined_address_frag;
+
 extern void frag_append_1_char (int);
 #define FRAG_APPEND_1_CHAR(X) frag_append_1_char (X)
-#endif
 
 void frag_init (void);
 fragS *frag_alloc (struct obstack *);
-void frag_grow (unsigned int nchars);
-char *frag_more (int nchars);
+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,
-                        int n_fill, int max);
+                        size_t n_fill, int max);
 void frag_align_code (int alignment, int max);
-void frag_new (int old_frags_var_max_size);
+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,
-                   int max_chars,
-                   int var,
+                   size_t max_chars,
+                   size_t var,
                    relax_substateT subtype,
                    symbolS * symbol,
                    offsetT offset,
                    char *opcode);
 
 char *frag_var (relax_stateT type,
-               int max_chars,
-               int var,
+               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 */