2002-01-07 Michael Snyder <msnyder@redhat.com>

2002-01-07  Michael Snyder  <msnyder@redhat.com>

	* infptrace.c (GDB_MAX_ALLOCA): New define.
	(child_xfer_memory): Use xmalloc/xfree instead of alloca if the
	size of the buffer exceeds GDB_MAX_ALLOCA (default 1 megabyte,
	can be overridden with whatever value is appropriate to the host).
	* infttrace.c (child_xfer_memory): Add FIXME warning about use of
	alloca to allocate potentially large buffer.
	* rs6000-nat.c (child_xfer_memory): Ditto.
	* symm-nat.c (child_xfer_memory): Ditto.
	* x86-64-linux-nat.c (child_xfer_memory): Ditto.