From de9df3993cfffde468c1c226382f24cec7e9fedc Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 21 Aug 2018 21:57:22 -0700 Subject: lib/test_hexdump.c: fix failure on big endian cpu On a big endian cpu, test_hexdump fails as follows. The logs show that bytes are expected in reversed order. [...] test_hexdump: Len: 24 buflen: 130 strlen: 97 test_hexdump: Result: 97 'be32db7b 0a1893b2 70bac424 7d83349b a69c31ad 9c0face9 .2.{....p..$}.4...1.....' test_hexdump: Expect: 97 '7bdb32be b293180a 24c4ba70 9b34837d ad319ca6 e9ac0f9c .2.{....p..$}.4...1.....' test_hexdump: Len: 8 buflen: 130 strlen: 77 test_hexdump: Result: 77 'be32db7b0a1893b2 .2.{....' test_hexdump: Expect: 77 'b293180a7bdb32be .2.{....' test_hexdump: Len: 6 buflen: 131 strlen: 87 test_hexdump: Result: 87 'be32 db7b 0a18 .2.{..' test_hexdump: Expect: 87 '32be 7bdb 180a .2.{..' test_hexdump: Len: 24 buflen: 131 strlen: 97 test_hexdump: Result: 97 'be32db7b 0a1893b2 70bac424 7d83349b a69c31ad 9c0face9 .2.{....p..$}.4...1.....' test_hexdump: Expect: 97 '7bdb32be b293180a 24c4ba70 9b34837d ad319ca6 e9ac0f9c .2.{....p..$}.4...1.....' test_hexdump: Len: 32 buflen: 131 strlen: 101 test_hexdump: Result: 101 'be32db7b0a1893b2 70bac4247d83349b a69c31ad9c0face9 4cd1199943b1af0c .2.{....p..$}.4...1.....L...C...' test_hexdump: Expect: 101 'b293180a7bdb32be 9b34837d24c4ba70 e9ac0f9cad319ca6 0cafb1439919d14c .2.{....p..$}.4...1.....L...C...' test_hexdump: failed 801 out of 1184 tests This patch fixes it. Link: http://lkml.kernel.org/r/f3112437f62c2f48300535510918e8be1dceacfb.1533610877.git.christophe.leroy@c-s.fr Fixes: 64d1d77a44697 ("hexdump: introduce test suite") Signed-off-by: Christophe Leroy Reviewed-by: Andy Shevchenko Cc: Michael Ellerman Cc: rashmica Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/test_hexdump.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'lib') diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c index 3f415d8101f3..626f580b4ff7 100644 --- a/lib/test_hexdump.c +++ b/lib/test_hexdump.c @@ -18,7 +18,7 @@ static const unsigned char data_b[] = { static const unsigned char data_a[] = ".2.{....p..$}.4...1.....L...C..."; -static const char * const test_data_1_le[] __initconst = { +static const char * const test_data_1[] __initconst = { "be", "32", "db", "7b", "0a", "18", "93", "b2", "70", "ba", "c4", "24", "7d", "83", "34", "9b", "a6", "9c", "31", "ad", "9c", "0f", "ac", "e9", @@ -32,16 +32,33 @@ static const char * const test_data_2_le[] __initconst = { "d14c", "9919", "b143", "0caf", }; +static const char * const test_data_2_be[] __initconst = { + "be32", "db7b", "0a18", "93b2", + "70ba", "c424", "7d83", "349b", + "a69c", "31ad", "9c0f", "ace9", + "4cd1", "1999", "43b1", "af0c", +}; + static const char * const test_data_4_le[] __initconst = { "7bdb32be", "b293180a", "24c4ba70", "9b34837d", "ad319ca6", "e9ac0f9c", "9919d14c", "0cafb143", }; +static const char * const test_data_4_be[] __initconst = { + "be32db7b", "0a1893b2", "70bac424", "7d83349b", + "a69c31ad", "9c0face9", "4cd11999", "43b1af0c", +}; + static const char * const test_data_8_le[] __initconst = { "b293180a7bdb32be", "9b34837d24c4ba70", "e9ac0f9cad319ca6", "0cafb1439919d14c", }; +static const char * const test_data_8_be[] __initconst = { + "be32db7b0a1893b2", "70bac4247d83349b", + "a69c31ad9c0face9", "4cd1199943b1af0c", +}; + #define FILL_CHAR '#' static unsigned total_tests __initdata; @@ -56,6 +73,7 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize, size_t l = len; int gs = groupsize, rs = rowsize; unsigned int i; + const bool is_be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); if (rs != 16 && rs != 32) rs = 16; @@ -67,13 +85,13 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize, gs = 1; if (gs == 8) - result = test_data_8_le; + result = is_be ? test_data_8_be : test_data_8_le; else if (gs == 4) - result = test_data_4_le; + result = is_be ? test_data_4_be : test_data_4_le; else if (gs == 2) - result = test_data_2_le; + result = is_be ? test_data_2_be : test_data_2_le; else - result = test_data_1_le; + result = test_data_1; /* hex dump */ p = test; -- cgit v1.2.3