gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gas / dw2gencfi.h

diff --git a/gas/dw2gencfi.h b/gas/dw2gencfi.h
index 0361f97c8f68ff8c9f2b5cbe51a0cbb69ebfa4fa..3af2875767fa899a12d3f7a1f77414d064594a51 100644 (file)
--- a/gas/dw2gencfi.h
+++ b/gas/dw2gencfi.h
@@ -1,12 +1,12 @@
 /* dw2gencfi.h - Support for generating Dwarf2 CFI information.
 /* dw2gencfi.h - Support for generating Dwarf2 CFI information.

-   Copyright 2003 Free Software Foundation, Inc.
+   Copyright (C) 2003-2020 Free Software Foundation, Inc.

    Contributed by Michal Ludvig <mludvig@suse.cz>
 
    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
    Contributed by Michal Ludvig <mludvig@suse.cz>
 
    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,


@@ -16,13 +16,13 @@
 
    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 DW2GENCFI_H
 #define DW2GENCFI_H
 
 
 #ifndef DW2GENCFI_H
 #define DW2GENCFI_H
 

-#include "elf/dwarf2.h"
+#include "dwarf2.h"

 
 struct symbol;
 
 
 struct symbol;
 


@@ -36,9 +36,12 @@ extern void cfi_finish (void);
 extern void cfi_new_fde (struct symbol *);
 extern void cfi_end_fde (struct symbol *);
 extern void cfi_set_return_column (unsigned);
 extern void cfi_new_fde (struct symbol *);
 extern void cfi_end_fde (struct symbol *);
 extern void cfi_set_return_column (unsigned);

+extern void cfi_set_sections (void);

 extern void cfi_add_advance_loc (struct symbol *);
 extern void cfi_add_advance_loc (struct symbol *);

+extern void cfi_add_label (const char *);

 
 extern void cfi_add_CFA_offset (unsigned, offsetT);
 
 extern void cfi_add_CFA_offset (unsigned, offsetT);

+extern void cfi_add_CFA_val_offset (unsigned, offsetT);

 extern void cfi_add_CFA_def_cfa (unsigned, offsetT);
 extern void cfi_add_CFA_register (unsigned, unsigned);
 extern void cfi_add_CFA_def_cfa_register (unsigned);
 extern void cfi_add_CFA_def_cfa (unsigned, offsetT);
 extern void cfi_add_CFA_register (unsigned, unsigned);
 extern void cfi_add_CFA_def_cfa_register (unsigned);


@@ -48,6 +51,154 @@ extern void cfi_add_CFA_undefined (unsigned);
 extern void cfi_add_CFA_same_value (unsigned);
 extern void cfi_add_CFA_remember_state (void);
 extern void cfi_add_CFA_restore_state (void);
 extern void cfi_add_CFA_same_value (unsigned);
 extern void cfi_add_CFA_remember_state (void);
 extern void cfi_add_CFA_restore_state (void);

-extern void cfi_add_CFA_nop (void);
+
+/* Structures for md_cfi_end.  */
+
+#if defined (TE_PE) || defined (TE_PEP)
+#define SUPPORT_FRAME_LINKONCE 1
+#else
+#define SUPPORT_FRAME_LINKONCE 0
+#endif
+
+#ifdef tc_cfi_reloc_for_encoding
+#define SUPPORT_COMPACT_EH 1
+#else
+#define SUPPORT_COMPACT_EH 0
+#endif
+
+#define MULTIPLE_FRAME_SECTIONS (SUPPORT_FRAME_LINKONCE || SUPPORT_COMPACT_EH)
+
+struct cfi_insn_data
+{
+  struct cfi_insn_data *next;
+#if MULTIPLE_FRAME_SECTIONS
+  segT cur_seg;
+#endif
+  int insn;
+  union
+  {
+    struct
+    {
+      unsigned reg;
+      offsetT offset;
+    } ri;
+
+    struct
+    {
+      unsigned reg1;
+      unsigned reg2;
+    } rr;
+
+    unsigned r;
+    offsetT i;
+
+    struct
+    {
+      symbolS *lab1;
+      symbolS *lab2;
+    } ll;
+
+    struct cfi_escape_data *esc;
+
+    struct
+    {
+      unsigned reg, encoding;
+      expressionS exp;
+    } ea;
+
+    const char *sym_name;
+  } u;
+};
+
+/* An enumeration describing the Compact EH header format.  The least
+   significant bit is used to distinguish the entries.
+
+   Inline Compact:                     Function offset [0]
+                                       Four chars of unwind data.
+   Out-of-line Compact:                        Function offset [1]
+                                       Compact unwind data offset [0]
+   Legacy:                             Function offset [1]
+                                       Unwind data offset [1]
+
+   The header type is initialized to EH_COMPACT_UNKNOWN until the
+   format is discovered by encountering a .fde_data entry.
+   Failure to find a .fde_data entry will cause an EH_COMPACT_LEGACY
+   header to be generated.  */
+
+enum {
+  EH_COMPACT_UNKNOWN,
+  EH_COMPACT_LEGACY,
+  EH_COMPACT_INLINE,
+  EH_COMPACT_OUTLINE,
+  EH_COMPACT_OUTLINE_DONE,
+  /* Outline if .cfi_inline_lsda used, otherwise legacy FDE.  */
+  EH_COMPACT_HAS_LSDA
+};
+
+/* Stack of old CFI data, for save/restore.  */
+struct cfa_save_data
+{
+  struct cfa_save_data *next;
+  offsetT cfa_offset;
+};
+
+/* Current open FDE entry.  */
+struct frch_cfi_data
+{
+  struct fde_entry *cur_fde_data;
+  symbolS *last_address;
+  offsetT cur_cfa_offset;
+  struct cfa_save_data *cfa_save_stack;
+};
+
+struct fde_entry
+{
+  struct fde_entry *next;
+#if MULTIPLE_FRAME_SECTIONS
+  segT cur_seg;
+#endif
+  symbolS *start_address;
+  symbolS *end_address;
+  struct cfi_insn_data *data;
+  struct cfi_insn_data **last;
+  unsigned char per_encoding;
+  unsigned char lsda_encoding;
+  int personality_id;
+  expressionS personality;
+  expressionS lsda;
+  unsigned int return_column;
+  unsigned int signal_frame;
+#if MULTIPLE_FRAME_SECTIONS
+  int handled;
+#endif
+  int eh_header_type;
+  /* Compact unwinding opcodes, not including the PR byte or LSDA.  */
+  int eh_data_size;
+  bfd_byte *eh_data;
+  /* For out of line tables and FDEs.  */
+  symbolS *eh_loc;
+  int sections;
+#ifdef tc_fde_entry_extras
+  tc_fde_entry_extras
+#endif
+};
+
+/* The list of all FDEs that have been collected.  */
+extern struct fde_entry *all_fde_data;
+
+/* Fake CFI type; outside the byte range of any real CFI insn.  */
+#define CFI_adjust_cfa_offset  0x100
+#define CFI_return_column      0x101
+#define CFI_rel_offset         0x102
+#define CFI_escape             0x103
+#define CFI_signal_frame       0x104
+#define CFI_val_encoded_addr   0x105
+#define CFI_label              0x106
+
+/* By default emit .eh_frame only, not .debug_frame.  */
+#define CFI_EMIT_eh_frame               (1 << 0)
+#define CFI_EMIT_debug_frame            (1 << 1)
+#define CFI_EMIT_target                 (1 << 2)
+#define CFI_EMIT_eh_frame_compact       (1 << 3)

 
 #endif /* DW2GENCFI_H */
 
 #endif /* DW2GENCFI_H */