gdb: make store_integer take an array_view

Change store_integer, store_signed_integer and store_unsigned_integer to
accept an array_view.  Add some backwards compatibility overloads to
avoid changing all callers at once.

Change-Id: Ibb1381228ab1cb65fc7e2e4b92cf9ab1047cdc03
Reviewed-By: John Baldwin <jhb@FreeBSD.org>

2 files changed, 38 insertions, 17 deletions

diff --git a/gdb/defs.h b/gdb/defs.h
index bcce4f4..e20143b 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -495,21 +495,44 @@ extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
    target-format integer at ADDR which is LEN bytes long.  */
 
 template<typename T, typename = RequireLongest<T>>
-extern void store_integer (gdb_byte *addr, int len, enum bfd_endian byte_order,
-			   T val);
+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_signed_integer (gdb_byte *addr, int len,
-		      enum bfd_endian byte_order, LONGEST val)
+store_unsigned_integer (gdb::array_view<gdb_byte> dst, bfd_endian byte_order,
+			ULONGEST val)
 {
-  return store_integer (addr, len, byte_order, val);
+  return store_integer (dst, byte_order, val);
 }
 
 static inline void
-store_unsigned_integer (gdb_byte *addr, int len,
-			enum bfd_endian byte_order, ULONGEST val)
+store_unsigned_integer (gdb_byte *addr, int len, bfd_endian byte_order,
+			ULONGEST val)
 {
-  return store_integer (addr, len, byte_order, 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,
diff --git a/gdb/findvar.c b/gdb/findvar.c
index 02b4a12..8f016f5 100644
--- a/gdb/findvar.c
+++ b/gdb/findvar.c
@@ -159,12 +159,12 @@ extract_typed_address (const gdb_byte *buf, struct type *type)
    target-format integer at ADDR which is LEN bytes long.  */
 template<typename T, typename>
 void
-store_integer (gdb_byte *addr, int len, enum bfd_endian byte_order,
+store_integer (gdb::array_view<gdb_byte> dst, enum bfd_endian byte_order,
 	       T val)
 {
   gdb_byte *p;
-  gdb_byte *startaddr = addr;
-  gdb_byte *endaddr = startaddr + len;
+  gdb_byte *startaddr = dst.data ();
+  gdb_byte *endaddr = startaddr + dst.size ();
 
   /* Start at the least significant end of the integer, and work towards
      the most significant.  */
@@ -187,13 +187,11 @@ store_integer (gdb_byte *addr, int len, enum bfd_endian byte_order,
 }
 
 /* Explicit instantiations.  */
-template void store_integer (gdb_byte *addr, int len,
-			     enum bfd_endian byte_order,
-			     LONGEST val);
+template void store_integer (gdb::array_view<gdb_byte> dst,
+			     bfd_endian byte_order, LONGEST val);
 
-template void store_integer (gdb_byte *addr, int len,
-			     enum bfd_endian byte_order,
-			     ULONGEST val);
+template void store_integer (gdb::array_view<gdb_byte> dst,
+			     bfd_endian byte_order, ULONGEST val);
 
 /* Store the address ADDR as a pointer of type TYPE at BUF, in target
    form.  */