Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 277 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/dwarf2out.h b/gcc-4.9/gcc/dwarf2out.h
new file mode 100644
index 000000000..696fef938
--- /dev/null
+++ b/gcc-4.9/gcc/dwarf2out.h
@@ -0,0 +1,277 @@
+/* dwarf2out.h - Various declarations for functions found in dwarf2out.c
+   Copyright (C) 1998-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_DWARF2OUT_H
+#define GCC_DWARF2OUT_H 1
+
+#include "dwarf2.h"	/* ??? Remove this once only used by dwarf2foo.c.  */
+
+typedef struct die_struct *dw_die_ref;
+typedef const struct die_struct *const_dw_die_ref;
+
+typedef struct dw_val_node *dw_val_ref;
+typedef struct dw_cfi_node *dw_cfi_ref;
+typedef struct dw_loc_descr_node *dw_loc_descr_ref;
+typedef struct dw_loc_list_struct *dw_loc_list_ref;
+
+
+/* Call frames are described using a sequence of Call Frame
+   Information instructions.  The register number, offset
+   and address fields are provided as possible operands;
+   their use is selected by the opcode field.  */
+
+enum dw_cfi_oprnd_type {
+  dw_cfi_oprnd_unused,
+  dw_cfi_oprnd_reg_num,
+  dw_cfi_oprnd_offset,
+  dw_cfi_oprnd_addr,
+  dw_cfi_oprnd_loc
+};
+
+typedef union GTY(()) {
+  unsigned int GTY ((tag ("dw_cfi_oprnd_reg_num"))) dw_cfi_reg_num;
+  HOST_WIDE_INT GTY ((tag ("dw_cfi_oprnd_offset"))) dw_cfi_offset;
+  const char * GTY ((tag ("dw_cfi_oprnd_addr"))) dw_cfi_addr;
+  struct dw_loc_descr_node * GTY ((tag ("dw_cfi_oprnd_loc"))) dw_cfi_loc;
+} dw_cfi_oprnd;
+
+struct GTY(()) dw_cfi_node {
+  enum dwarf_call_frame_info dw_cfi_opc;
+  dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd1_desc (%1.dw_cfi_opc)")))
+    dw_cfi_oprnd1;
+  dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd2_desc (%1.dw_cfi_opc)")))
+    dw_cfi_oprnd2;
+};
+
+
+typedef vec<dw_cfi_ref, va_gc> *cfi_vec;
+
+typedef struct dw_fde_node *dw_fde_ref;
+
+/* All call frame descriptions (FDE's) in the GCC generated DWARF
+   refer to a single Common Information Entry (CIE), defined at
+   the beginning of the .debug_frame section.  This use of a single
+   CIE obviates the need to keep track of multiple CIE's
+   in the DWARF generation routines below.  */
+
+struct GTY(()) dw_fde_node {
+  tree decl;
+  const char *dw_fde_begin;
+  const char *dw_fde_current_label;
+  const char *dw_fde_end;
+  const char *dw_fde_vms_end_prologue;
+  const char *dw_fde_vms_begin_epilogue;
+  const char *dw_fde_second_begin;
+  const char *dw_fde_second_end;
+  cfi_vec dw_fde_cfi;
+  int dw_fde_switch_cfi_index; /* Last CFI before switching sections.  */
+  HOST_WIDE_INT stack_realignment;
+
+  unsigned funcdef_number;
+  unsigned fde_index;
+
+  /* Dynamic realign argument pointer register.  */
+  unsigned int drap_reg;
+  /* Virtual dynamic realign argument pointer register.  */
+  unsigned int vdrap_reg;
+  /* These 3 flags are copied from rtl_data in function.h.  */
+  unsigned all_throwers_are_sibcalls : 1;
+  unsigned uses_eh_lsda : 1;
+  unsigned nothrow : 1;
+  /* Whether we did stack realign in this call frame.  */
+  unsigned stack_realign : 1;
+  /* Whether dynamic realign argument pointer register has been saved.  */
+  unsigned drap_reg_saved: 1;
+  /* True iff dw_fde_begin label is in text_section or cold_text_section.  */
+  unsigned in_std_section : 1;
+  /* True iff dw_fde_second_begin label is in text_section or
+     cold_text_section.  */
+  unsigned second_in_std_section : 1;
+};
+
+
+/* This is how we define the location of the CFA. We use to handle it
+   as REG + OFFSET all the time,  but now it can be more complex.
+   It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET.
+   Instead of passing around REG and OFFSET, we pass a copy
+   of this structure.  */
+struct GTY(()) dw_cfa_location {
+  HOST_WIDE_INT offset;
+  HOST_WIDE_INT base_offset;
+  /* REG is in DWARF_FRAME_REGNUM space, *not* normal REGNO space.  */
+  unsigned int reg;
+  BOOL_BITFIELD indirect : 1;  /* 1 if CFA is accessed via a dereference.  */
+  BOOL_BITFIELD in_use : 1;    /* 1 if a saved cfa is stored here.  */
+};
+
+
+/* Each DIE may have a series of attribute/value pairs.  Values
+   can take on several forms.  The forms that are used in this
+   implementation are listed below.  */
+
+enum dw_val_class
+{
+  dw_val_class_none,
+  dw_val_class_addr,
+  dw_val_class_offset,
+  dw_val_class_loc,
+  dw_val_class_loc_list,
+  dw_val_class_range_list,
+  dw_val_class_const,
+  dw_val_class_unsigned_const,
+  dw_val_class_const_double,
+  dw_val_class_vec,
+  dw_val_class_flag,
+  dw_val_class_die_ref,
+  dw_val_class_fde_ref,
+  dw_val_class_lbl_id,
+  dw_val_class_lineptr,
+  dw_val_class_str,
+  dw_val_class_macptr,
+  dw_val_class_file,
+  dw_val_class_data8,
+  dw_val_class_decl_ref,
+  dw_val_class_vms_delta,
+  dw_val_class_high_pc
+};
+
+/* Describe a floating point constant value, or a vector constant value.  */
+
+struct GTY(()) dw_vec_const {
+  unsigned char * GTY((atomic)) array;
+  unsigned length;
+  unsigned elt_size;
+};
+
+struct addr_table_entry_struct;
+
+/* The dw_val_node describes an attribute's value, as it is
+   represented internally.  */
+
+struct GTY(()) dw_val_node {
+  enum dw_val_class val_class;
+  struct addr_table_entry_struct * GTY(()) val_entry;
+  union dw_val_struct_union
+    {
+      rtx GTY ((tag ("dw_val_class_addr"))) val_addr;
+      unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_offset"))) val_offset;
+      dw_loc_list_ref GTY ((tag ("dw_val_class_loc_list"))) val_loc_list;
+      dw_loc_descr_ref GTY ((tag ("dw_val_class_loc"))) val_loc;
+      HOST_WIDE_INT GTY ((default)) val_int;
+      unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
+      double_int GTY ((tag ("dw_val_class_const_double"))) val_double;
+      dw_vec_const GTY ((tag ("dw_val_class_vec"))) val_vec;
+      struct dw_val_die_union
+	{
+	  dw_die_ref die;
+	  int external;
+	} GTY ((tag ("dw_val_class_die_ref"))) val_die_ref;
+      unsigned GTY ((tag ("dw_val_class_fde_ref"))) val_fde_index;
+      struct indirect_string_node * GTY ((tag ("dw_val_class_str"))) val_str;
+      char * GTY ((tag ("dw_val_class_lbl_id"))) val_lbl_id;
+      unsigned char GTY ((tag ("dw_val_class_flag"))) val_flag;
+      struct dwarf_file_data * GTY ((tag ("dw_val_class_file"))) val_file;
+      unsigned char GTY ((tag ("dw_val_class_data8"))) val_data8[8];
+      tree GTY ((tag ("dw_val_class_decl_ref"))) val_decl_ref;
+      struct dw_val_vms_delta_union
+	{
+	  char * lbl1;
+	  char * lbl2;
+	} GTY ((tag ("dw_val_class_vms_delta"))) val_vms_delta;
+    }
+  GTY ((desc ("%1.val_class"))) v;
+};
+
+/* Locations in memory are described using a sequence of stack machine
+   operations.  */
+
+struct GTY(()) dw_loc_descr_node {
+  dw_loc_descr_ref dw_loc_next;
+  ENUM_BITFIELD (dwarf_location_atom) dw_loc_opc : 8;
+  /* Used to distinguish DW_OP_addr with a direct symbol relocation
+     from DW_OP_addr with a dtp-relative symbol relocation.  */
+  unsigned int dtprel : 1;
+  int dw_loc_addr;
+  dw_val_node dw_loc_oprnd1;
+  dw_val_node dw_loc_oprnd2;
+};
+
+
+/* Interface from dwarf2out.c to dwarf2cfi.c.  */
+extern struct dw_loc_descr_node *build_cfa_loc
+  (dw_cfa_location *, HOST_WIDE_INT);
+extern struct dw_loc_descr_node *build_cfa_aligned_loc
+  (dw_cfa_location *, HOST_WIDE_INT offset, HOST_WIDE_INT alignment);
+extern struct dw_loc_descr_node *mem_loc_descriptor
+  (rtx, enum machine_mode mode, enum machine_mode mem_mode,
+   enum var_init_status);
+extern bool loc_descr_equal_p (dw_loc_descr_ref, dw_loc_descr_ref);
+extern dw_fde_ref dwarf2out_alloc_current_fde (void);
+
+extern unsigned long size_of_locs (dw_loc_descr_ref);
+extern void output_loc_sequence (dw_loc_descr_ref, int);
+extern void output_loc_sequence_raw (dw_loc_descr_ref);
+
+/* Interface from dwarf2cfi.c to dwarf2out.c.  */
+extern void lookup_cfa_1 (dw_cfi_ref cfi, dw_cfa_location *loc,
+			  dw_cfa_location *remember);
+extern bool cfa_equal_p (const dw_cfa_location *, const dw_cfa_location *);
+
+extern void output_cfi (dw_cfi_ref, dw_fde_ref, int);
+
+extern GTY(()) cfi_vec cie_cfi_vec;
+
+/* Interface from dwarf2*.c to the rest of the compiler.  */
+extern enum dw_cfi_oprnd_type dw_cfi_oprnd1_desc
+  (enum dwarf_call_frame_info cfi);
+extern enum dw_cfi_oprnd_type dw_cfi_oprnd2_desc
+  (enum dwarf_call_frame_info cfi);
+
+extern void output_cfi_directive (FILE *f, struct dw_cfi_node *cfi);
+
+extern void dwarf2out_decl (tree);
+extern void dwarf2out_emit_cfi (dw_cfi_ref cfi);
+
+extern void debug_dwarf (void);
+struct die_struct;
+extern void debug_dwarf_die (struct die_struct *);
+extern void debug (die_struct &ref);
+extern void debug (die_struct *ptr);
+extern void dwarf2out_set_demangle_name_func (const char *(*) (const char *));
+#ifdef VMS_DEBUGGING_INFO
+extern void dwarf2out_vms_debug_main_pointer (void);
+#endif
+
+struct array_descr_info
+{
+  int ndimensions;
+  tree element_type;
+  tree base_decl;
+  tree data_location;
+  tree allocated;
+  tree associated;
+  struct array_descr_dimen
+    {
+      tree lower_bound;
+      tree upper_bound;
+      tree stride;
+    } dimen[10];
+};
+
+#endif /* GCC_DWARF2OUT_H */