Move DWARF code to dwarf2/ subdirectory

This moves all the remaining DWARF code to the new dwarf2
subdirectory.  This is just a simple renaming, with updates to
includes as needed.

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2/expr.c: Rename from dwarf2expr.c.
	* dwarf2/expr.h: Rename from dwarf2expr.h.
	* dwarf2/frame-tailcall.c: Rename from dwarf2-frame-tailcall.c.
	* dwarf2/frame-tailcall.h: Rename from dwarf2-frame-tailcall.h.
	* dwarf2/frame.c: Rename from dwarf2-frame.c.
	* dwarf2/frame.h: Rename from dwarf2-frame.h.
	* dwarf2/index-cache.c: Rename from dwarf-index-cache.c.
	* dwarf2/index-cache.h: Rename from dwarf-index-cache.h.
	* dwarf2/index-common.c: Rename from dwarf-index-common.c.
	* dwarf2/index-common.h: Rename from dwarf-index-common.h.
	* dwarf2/index-write.c: Rename from dwarf-index-write.c.
	* dwarf2/index-write.h: Rename from dwarf-index-write.h.
	* dwarf2/loc.c: Rename from dwarf2loc.c.
	* dwarf2/loc.h: Rename from dwarf2loc.h.
	* dwarf2/read.c: Rename from dwarf2read.c.
	* dwarf2/read.h: Rename from dwarf2read.h.
	* dwarf2/abbrev.c, aarch64-tdep.c, alpha-tdep.c,
	amd64-darwin-tdep.c, arc-tdep.c, arm-tdep.c, bfin-tdep.c,
	compile/compile-c-symbols.c, compile/compile-cplus-symbols.c,
	compile/compile-loc2c.c, cris-tdep.c, csky-tdep.c, findvar.c,
	gdbtypes.c, guile/scm-type.c, h8300-tdep.c, hppa-bsd-tdep.c,
	hppa-linux-tdep.c, i386-darwin-tdep.c, i386-linux-tdep.c,
	i386-tdep.c, iq2000-tdep.c, m32c-tdep.c, m68hc11-tdep.c,
	m68k-tdep.c, microblaze-tdep.c, mips-tdep.c, mn10300-tdep.c,
	msp430-tdep.c, nds32-tdep.c, nios2-tdep.c, or1k-tdep.c,
	riscv-tdep.c, rl78-tdep.c, rs6000-tdep.c, rx-tdep.c, s12z-tdep.c,
	s390-tdep.c, score-tdep.c, sh-tdep.c, sparc-linux-tdep.c,
	sparc-tdep.c, sparc64-linux-tdep.c, sparc64-tdep.c, tic6x-tdep.c,
	tilegx-tdep.c, v850-tdep.c, xstormy16-tdep.c, xtensa-tdep.c:
	Update.
	* Makefile.in (COMMON_SFILES): Update.
	(HFILES_NO_SRCDIR): Update.

Change-Id: Ied9ce1436cd27ac4a4cffef10ec92e396f181928

1 files changed, 0 insertions, 325 deletions

diff --git a/gdb/dwarf2expr.h b/gdb/dwarf2expr.h
deleted file mode 100644
index 2f3d2ce..0000000
--- a/gdb/dwarf2expr.h
+++ /dev/null
@@ -1,325 +0,0 @@
-/* DWARF 2 Expression Evaluator.
-
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
-
-   Contributed by Daniel Berlin <dan@dberlin.org>.
-
-   This file is part of GDB.
-
-   This program 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 of the License, or
-   (at your option) any later version.
-
-   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#if !defined (DWARF2EXPR_H)
-#define DWARF2EXPR_H
-
-#include "leb128.h"
-#include "gdbtypes.h"
-
-/* The location of a value.  */
-enum dwarf_value_location
-{
-  /* The piece is in memory.
-     The value on the dwarf stack is its address.  */
-  DWARF_VALUE_MEMORY,
-
-  /* The piece is in a register.
-     The value on the dwarf stack is the register number.  */
-  DWARF_VALUE_REGISTER,
-
-  /* The piece is on the dwarf stack.  */
-  DWARF_VALUE_STACK,
-
-  /* The piece is a literal.  */
-  DWARF_VALUE_LITERAL,
-
-  /* The piece was optimized out.  */
-  DWARF_VALUE_OPTIMIZED_OUT,
-
-  /* The piece is an implicit pointer.  */
-  DWARF_VALUE_IMPLICIT_POINTER
-};
-
-/* A piece of an object, as recorded by DW_OP_piece or DW_OP_bit_piece.  */
-struct dwarf_expr_piece
-{
-  enum dwarf_value_location location;
-
-  union
-  {
-    struct
-    {
-      /* This piece's address, for DWARF_VALUE_MEMORY pieces.  */
-      CORE_ADDR addr;
-      /* Non-zero if the piece is known to be in memory and on
-	 the program's stack.  */
-      bool in_stack_memory;
-    } mem;
-
-    /* The piece's register number, for DWARF_VALUE_REGISTER pieces.  */
-    int regno;
-
-    /* The piece's literal value, for DWARF_VALUE_STACK pieces.  */
-    struct value *value;
-
-    struct
-    {
-      /* A pointer to the data making up this piece,
-	 for DWARF_VALUE_LITERAL pieces.  */
-      const gdb_byte *data;
-      /* The length of the available data.  */
-      ULONGEST length;
-    } literal;
-
-    /* Used for DWARF_VALUE_IMPLICIT_POINTER.  */
-    struct
-    {
-      /* The referent DIE from DW_OP_implicit_pointer.  */
-      sect_offset die_sect_off;
-      /* The byte offset into the resulting data.  */
-      LONGEST offset;
-    } ptr;
-  } v;
-
-  /* The length of the piece, in bits.  */
-  ULONGEST size;
-  /* The piece offset, in bits.  */
-  ULONGEST offset;
-};
-
-/* The dwarf expression stack.  */
-
-struct dwarf_stack_value
-{
-  dwarf_stack_value (struct value *value_, int in_stack_memory_)
-  : value (value_), in_stack_memory (in_stack_memory_)
-  {}
-
-  struct value *value;
-
-  /* True if the piece is in memory and is known to be on the program's stack.
-     It is always ok to set this to zero.  This is used, for example, to
-     optimize memory access from the target.  It can vastly speed up backtraces
-     on long latency connections when "set stack-cache on".  */
-  bool in_stack_memory;
-};
-
-/* The expression evaluator works with a dwarf_expr_context, describing
-   its current state and its callbacks.  */
-struct dwarf_expr_context
-{
-  dwarf_expr_context ();
-  virtual ~dwarf_expr_context () = default;
-
-  void push_address (CORE_ADDR value, bool in_stack_memory);
-  void eval (const gdb_byte *addr, size_t len);
-  struct value *fetch (int n);
-  CORE_ADDR fetch_address (int n);
-  bool fetch_in_stack_memory (int n);
-
-  /* The stack of values.  */
-  std::vector<dwarf_stack_value> stack;
-
-  /* Target architecture to use for address operations.  */
-  struct gdbarch *gdbarch;
-
-  /* Target address size in bytes.  */
-  int addr_size;
-
-  /* DW_FORM_ref_addr size in bytes.  If -1 DWARF is executed from a frame
-     context and operations depending on DW_FORM_ref_addr are not allowed.  */
-  int ref_addr_size;
-
-  /* Offset used to relocate DW_OP_addr, DW_OP_addrx, and
-     DW_OP_GNU_addr_index arguments.  */
-  CORE_ADDR offset;
-
-  /* The current depth of dwarf expression recursion, via DW_OP_call*,
-     DW_OP_fbreg, DW_OP_push_object_address, etc., and the maximum
-     depth we'll tolerate before raising an error.  */
-  int recursion_depth, max_recursion_depth;
-
-  /* Location of the value.  */
-  enum dwarf_value_location location;
-
-  /* For DWARF_VALUE_LITERAL, the current literal value's length and
-     data.  For DWARF_VALUE_IMPLICIT_POINTER, LEN is the offset of the
-     target DIE of sect_offset kind.  */
-  ULONGEST len;
-  const gdb_byte *data;
-
-  /* Initialization status of variable: Non-zero if variable has been
-     initialized; zero otherwise.  */
-  int initialized;
-
-  /* A vector of pieces.
-
-     Each time DW_OP_piece is executed, we add a new element to the
-     end of this array, recording the current top of the stack, the
-     current location, and the size given as the operand to
-     DW_OP_piece.  We then pop the top value from the stack, reset the
-     location, and resume evaluation.
-
-     The Dwarf spec doesn't say whether DW_OP_piece pops the top value
-     from the stack.  We do, ensuring that clients of this interface
-     expecting to see a value left on the top of the stack (say, code
-     evaluating frame base expressions or CFA's specified with
-     DW_CFA_def_cfa_expression) will get an error if the expression
-     actually marks all the values it computes as pieces.
-
-     If an expression never uses DW_OP_piece, num_pieces will be zero.
-     (It would be nice to present these cases as expressions yielding
-     a single piece, so that callers need not distinguish between the
-     no-DW_OP_piece and one-DW_OP_piece cases.  But expressions with
-     no DW_OP_piece operations have no value to place in a piece's
-     'size' field; the size comes from the surrounding data.  So the
-     two cases need to be handled separately.)  */
-  std::vector<dwarf_expr_piece> pieces;
-
-  /* Return the value of register number REGNUM (a DWARF register number),
-     read as an address.  */
-  virtual CORE_ADDR read_addr_from_reg (int regnum) = 0;
-
-  /* Return a value of type TYPE, stored in register number REGNUM
-     of the frame associated to the given BATON.
-
-     REGNUM is a DWARF register number.  */
-  virtual struct value *get_reg_value (struct type *type, int regnum) = 0;
-
-  /* Read LENGTH bytes at ADDR into BUF.  */
-  virtual void read_mem (gdb_byte *buf, CORE_ADDR addr, size_t length) = 0;
-
-  /* Return the location expression for the frame base attribute, in
-     START and LENGTH.  The result must be live until the current
-     expression evaluation is complete.  */
-  virtual void get_frame_base (const gdb_byte **start, size_t *length) = 0;
-
-  /* Return the CFA for the frame.  */
-  virtual CORE_ADDR get_frame_cfa () = 0;
-
-  /* Return the PC for the frame.  */
-  virtual CORE_ADDR get_frame_pc ()
-  {
-    error (_("%s is invalid in this context"), "DW_OP_implicit_pointer");
-  }
-
-  /* Return the thread-local storage address for
-     DW_OP_GNU_push_tls_address or DW_OP_form_tls_address.  */
-  virtual CORE_ADDR get_tls_address (CORE_ADDR offset) = 0;
-
-  /* Execute DW_AT_location expression for the DWARF expression
-     subroutine in the DIE at DIE_CU_OFF in the CU.  Do not touch
-     STACK while it being passed to and returned from the called DWARF
-     subroutine.  */
-  virtual void dwarf_call (cu_offset die_cu_off) = 0;
-
-  /* Execute "variable value" operation on the DIE at SECT_OFF.  */
-  virtual struct value *dwarf_variable_value (sect_offset sect_off) = 0;
-
-  /* Return the base type given by the indicated DIE at DIE_CU_OFF.
-     This can throw an exception if the DIE is invalid or does not
-     represent a base type.  SIZE is non-zero if this function should
-     verify that the resulting type has the correct size.  */
-  virtual struct type *get_base_type (cu_offset die_cu_off, int size)
-  {
-    /* Anything will do.  */
-    return builtin_type (this->gdbarch)->builtin_int;
-  }
-
-  /* Push on DWARF stack an entry evaluated for DW_TAG_call_site's
-     parameter matching KIND and KIND_U at the caller of specified BATON.
-     If DEREF_SIZE is not -1 then use DW_AT_call_data_value instead of
-     DW_AT_call_value.  */
-  virtual void push_dwarf_reg_entry_value (enum call_site_parameter_kind kind,
-					   union call_site_parameter_u kind_u,
-					   int deref_size) = 0;
-
-  /* Return the address indexed by DW_OP_addrx or DW_OP_GNU_addr_index.
-     This can throw an exception if the index is out of range.  */
-  virtual CORE_ADDR get_addr_index (unsigned int index) = 0;
-
-  /* Return the `object address' for DW_OP_push_object_address.  */
-  virtual CORE_ADDR get_object_address () = 0;
-
-private:
-
-  struct type *address_type () const;
-  void push (struct value *value, bool in_stack_memory);
-  bool stack_empty_p () const;
-  void add_piece (ULONGEST size, ULONGEST offset);
-  void execute_stack_op (const gdb_byte *op_ptr, const gdb_byte *op_end);
-  void pop ();
-};
-
-void dwarf_expr_require_composition (const gdb_byte *, const gdb_byte *,
-				     const char *);
-
-int dwarf_block_to_dwarf_reg (const gdb_byte *buf, const gdb_byte *buf_end);
-
-int dwarf_block_to_dwarf_reg_deref (const gdb_byte *buf,
-				    const gdb_byte *buf_end,
-				    CORE_ADDR *deref_size_return);
-
-int dwarf_block_to_fb_offset (const gdb_byte *buf, const gdb_byte *buf_end,
-			      CORE_ADDR *fb_offset_return);
-
-int dwarf_block_to_sp_offset (struct gdbarch *gdbarch, const gdb_byte *buf,
-			      const gdb_byte *buf_end,
-			      CORE_ADDR *sp_offset_return);
-
-/* Wrappers around the leb128 reader routines to simplify them for our
-   purposes.  */
-
-static inline const gdb_byte *
-gdb_read_uleb128 (const gdb_byte *buf, const gdb_byte *buf_end,
-		  uint64_t *r)
-{
-  size_t bytes_read = read_uleb128_to_uint64 (buf, buf_end, r);
-
-  if (bytes_read == 0)
-    return NULL;
-  return buf + bytes_read;
-}
-
-static inline const gdb_byte *
-gdb_read_sleb128 (const gdb_byte *buf, const gdb_byte *buf_end,
-		  int64_t *r)
-{
-  size_t bytes_read = read_sleb128_to_int64 (buf, buf_end, r);
-
-  if (bytes_read == 0)
-    return NULL;
-  return buf + bytes_read;
-}
-
-static inline const gdb_byte *
-gdb_skip_leb128 (const gdb_byte *buf, const gdb_byte *buf_end)
-{
-  size_t bytes_read = skip_leb128 (buf, buf_end);
-
-  if (bytes_read == 0)
-    return NULL;
-  return buf + bytes_read;
-}
-
-extern const gdb_byte *safe_read_uleb128 (const gdb_byte *buf,
-					  const gdb_byte *buf_end,
-					  uint64_t *r);
-
-extern const gdb_byte *safe_read_sleb128 (const gdb_byte *buf,
-					  const gdb_byte *buf_end,
-					  int64_t *r);
-
-extern const gdb_byte *safe_skip_leb128 (const gdb_byte *buf,
-					 const gdb_byte *buf_end);
-
-#endif /* dwarf2expr.h */