ari, btrace: avoid unsigned long long

Fix the ARI warning about the use of unsigned long long.  We can't use
ULONGEST as this is defined unsigned long on 64-bit systems.  This will
result in a compile error when storing a pointer to an unsigned long long
structure field (declared in perf_event.h as __u64) in a ULONGEST * variable.

Use size_t to hold the buffer size inside GDB and __u64 when interfacing the
Linux kernel.

gdb/
	* nat/linux-btrace.c (perf_event_read): Change the type of DATA_HEAD.
	(perf_event_read_all): Change the type of SIZE and DATA_HEAD.
	(perf_event_read_bts): Change the type of SIZE and READ.
	(linux_enable_bts): Change the type of SIZE, PAGES, DATA_SIZE,
	and DATA_OFFSET.  Move DATA_SIZE declaration.  Restrict the buffer size
	to UINT_MAX.  Check for overflows when using DATA_HEAD from the perf
	mmap page.
	(linux_enable_pt): Change the type of PAGES and SIZE.  Restrict the
	buffer size to UINT_MAX.
	(linux_read_bts): Change the type of BUFFER_SIZE, SIZE, DATA_HEAD, and
	DATA_TAIL.
	* nat/linux-btrace.h (struct perf_event_buffer)<size, data_head>
	<last_head>: Change type.
	* common/btrace-common.h (struct btrace_dat_pt) <size>: Change type.
	* common/btrace-common.c (btrace_data_append): Change the type of
	SIZE.
	* btrace.c (parse_xml_raw): Change the type of SIZE.  Change oddness
	check.

1 files changed, 5 insertions, 6 deletions

diff --git a/gdb/btrace.c b/gdb/btrace.c
index 731d2377fa..94942f4a49 100644
--- a/gdb/btrace.c
+++ b/gdb/btrace.c
@@ -1414,19 +1414,18 @@ parse_xml_btrace_block (struct gdb_xml_parser *parser,
 
 static void
 parse_xml_raw (struct gdb_xml_parser *parser, const char *body_text,
-	       gdb_byte **pdata, unsigned long *psize)
+	       gdb_byte **pdata, size_t *psize)
 {
   struct cleanup *cleanup;
   gdb_byte *data, *bin;
-  unsigned long size;
-  size_t len;
+  size_t len, size;
 
   len = strlen (body_text);
-  size = len / 2;
-
-  if ((size_t) size * 2 != len)
+  if (len % 2 != 0)
     gdb_xml_error (parser, _("Bad raw data size."));
 
+  size = len / 2;
+
   bin = data = xmalloc (size);
   cleanup = make_cleanup (xfree, data);