gdb: move store/extract integer functions to extract-store-integer.{c,h}

Move the declarations out of defs.h, and the implementations out of
findvar.c.

I opted for a new file, because this functionality of converting
integers to bytes and vice-versa seems a bit to generic to live in
findvar.c.

Change-Id: I524858fca33901ee2150c582bac16042148d2251
Approved-By: John Baldwin <jhb@FreeBSD.org>

1 files changed, 111 insertions, 0 deletions

diff --git a/gdb/extract-store-integer.h b/gdb/extract-store-integer.h
new file mode 100644
index 0000000..1ba5f82
--- /dev/null
+++ b/gdb/extract-store-integer.h
@@ -0,0 +1,111 @@
+/* Copyright (C) 2024 Free Software Foundation, Inc.
+
+   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/>.  */
+
+#ifndef GDB_EXTRACT_STORE_INTEGER_H
+#define GDB_EXTRACT_STORE_INTEGER_H
+
+template<typename T, typename = RequireLongest<T>>
+T extract_integer (gdb::array_view<const gdb_byte>, enum bfd_endian byte_order);
+
+static inline LONGEST
+extract_signed_integer (gdb::array_view<const gdb_byte> buf,
+			enum bfd_endian byte_order)
+{
+  return extract_integer<LONGEST> (buf, byte_order);
+}
+
+static inline LONGEST
+extract_signed_integer (const gdb_byte *addr, int len,
+			enum bfd_endian byte_order)
+{
+  return extract_signed_integer (gdb::array_view<const gdb_byte> (addr, len),
+				 byte_order);
+}
+
+static inline ULONGEST
+extract_unsigned_integer (gdb::array_view<const gdb_byte> buf,
+			  enum bfd_endian byte_order)
+{
+  return extract_integer<ULONGEST> (buf, byte_order);
+}
+
+static inline ULONGEST
+extract_unsigned_integer (const gdb_byte *addr, int len,
+			  enum bfd_endian byte_order)
+{
+  return extract_unsigned_integer (gdb::array_view<const gdb_byte> (addr, len),
+				   byte_order);
+}
+
+extern int extract_long_unsigned_integer (const gdb_byte *, int,
+					  enum bfd_endian, LONGEST *);
+
+extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
+					struct type *type);
+
+/* All 'store' functions accept a host-format integer and store a
+   target-format integer at ADDR which is LEN bytes long.  */
+
+template<typename T, typename = RequireLongest<T>>
+extern void store_integer (gdb::array_view<gdb_byte> dst,
+			   bfd_endian byte_order, T val);
+
+template<typename T>
+static inline void
+store_integer (gdb_byte *addr, int len, bfd_endian byte_order, T val)
+{
+  return store_integer (gdb::make_array_view (addr, len), byte_order, val);
+}
+
+static inline void
+store_signed_integer (gdb::array_view<gdb_byte> dst, bfd_endian byte_order,
+		      LONGEST val)
+{
+  return store_integer (dst, byte_order, val);
+}
+
+static inline void
+store_signed_integer (gdb_byte *addr, int len, bfd_endian byte_order,
+		      LONGEST val)
+{
+  return store_signed_integer (gdb::make_array_view (addr, len), byte_order,
+			       val);
+}
+
+static inline void
+store_unsigned_integer (gdb::array_view<gdb_byte> dst, bfd_endian byte_order,
+			ULONGEST val)
+{
+  return store_integer (dst, byte_order, val);
+}
+
+static inline void
+store_unsigned_integer (gdb_byte *addr, int len, bfd_endian byte_order,
+			ULONGEST val)
+{
+  return store_unsigned_integer (gdb::make_array_view (addr, len), byte_order,
+				 val);
+}
+
+extern void store_typed_address (gdb_byte *buf, struct type *type,
+				 CORE_ADDR addr);
+
+extern void copy_integer_to_size (gdb_byte *dest, int dest_size,
+				  const gdb_byte *source, int source_size,
+				  bool is_signed, enum bfd_endian byte_order);
+
+#endif /* GDB_EXTRACT_STORE_INTEGER_H */