[PATCH v2 5/6] xen: Read data correctly from dynamically allocated console ring, too

console ring is dynamically allocated since 19543 changeset (New option
conring_size= to allow larger console ring). Take into account that
and read data correctly from it, too.

v2 - Dave Anderson suggestions/fixes:
   - check conring type before determining its value.

Signed-off-by: Daniel Kiper <daniel.kiper@...>

diff -Npru crash-6.0.8.orig/xen_hyper_command.c crash-6.0.8/xen_hyper_command.c
--- crash-6.0.8.orig/xen_hyper_command.c	2012-06-29 16:59:18.000000000 +0200
+++ crash-6.0.8/xen_hyper_command.c	2012-08-10 14:05:24.000000000 +0200
 <at>  <at>  -590,24 +590,35  <at>  <at>  xen_hyper_dump_log(void)
 	ulong conring;
 	char *buf;
 	char last;
+	uint32_t conring_size;
+
+	if (get_symbol_type("conring", NULL, NULL) == TYPE_CODE_ARRAY)
+		conring = symbol_value("conring");
+	else
+		get_symbol_data("conring", sizeof(ulong), &conring);

-	conring = symbol_value("conring");
 	get_symbol_data("conringc", sizeof(uint), &conringc);
 	get_symbol_data("conringp", sizeof(uint), &conringp);
+
+	if (symbol_exists("conring_size"))
+		get_symbol_data("conring_size", sizeof(uint32_t), &conring_size);
+	else