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Commit 9e0304e3 authored by Chris Metcalf's avatar Chris Metcalf
Browse files

arch/tile: big-endian: properly bswap instruction bundles when backtracing 



Instruction bundles are always little-endian, even when running in
big-endian mode.  I missed this internal bug fix when cherry-picking
the big-endian code to return to the community.

Signed-off-by: default avatarChris Metcalf <cmetcalf@tilera.com>
parent 485802a6

arch/tile/kernel/backtrace.c

+7 −2
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 


#include <linux/kernel.h>

#include <linux/string.h>

#include <asm/byteorder.h>

#include <asm/backtrace.h>

#include <asm/tile-desc.h>

#include <arch/abi.h>
@@ -336,8 +337,12 @@ static void find_caller_pc_and_caller_sp(CallerLocation *location, 
				bytes_to_prefetch / sizeof(tile_bundle_bits);

		}



		/* Decode the next bundle. */

		bundle.bits = prefetched_bundles[next_bundle++];

		/*

		 * Decode the next bundle.

		 * TILE always stores instruction bundles in little-endian

		 * mode, even when the chip is running in big-endian mode.

		 */

		bundle.bits = le64_to_cpu(prefetched_bundles[next_bundle++]);

		bundle.num_insns =

			parse_insn_tile(bundle.bits, pc, bundle.insns);

		num_info_ops = bt_get_info_ops(&bundle, info_operands);