X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fdw2gencfi.h;h=3af2875767fa899a12d3f7a1f77414d064594a51;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=0361f97c8f68ff8c9f2b5cbe51a0cbb69ebfa4fa;hpb=2be24b54a9ec257e8f0f5035e1bf66ceb6a517ad;p=deliverable%2Fbinutils-gdb.git

diff --git a/gas/dw2gencfi.h b/gas/dw2gencfi.h
index 0361f97c8f..3af2875767 100644
--- a/gas/dw2gencfi.h
+++ b/gas/dw2gencfi.h
@@ -1,12 +1,12 @@
 /* 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
-   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,
@@ -16,13 +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
-   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
 
-#include "elf/dwarf2.h"
+#include "dwarf2.h"
 
 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_set_sections (void);
 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_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);
@@ -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_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 */