perf tools: Use __BYTE_ORDER__

Switch from the libc-defined __BYTE_ORDER to the compiler-defined
__BYTE_ORDER__ in order to make endianness detection more robust, like
it was done for libbpf.

Signed-off-by: Ilya Leoshkevich <[e-mail]>
Suggested-by: Arnaldo Carvalho de Melo <[e-mail]>
Cc: Heiko Carstens <[e-mail]>
Cc: Thomas Richter <[e-mail]>
Cc: Vasily Gorbik <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c

···
 
 #include "arm-spe-pkt-decoder.h"
 
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #define le16_to_cpu bswap_16
 #define le32_to_cpu bswap_32
 #define le64_to_cpu bswap_64

tools/perf/util/data-convert-bt.c

···
 	    bt_ctf_field_type_integer_set_base(type, BT_CTF_INTEGER_BASE_HEXADECIMAL))
 		goto err;
 
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 	bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_BIG_ENDIAN);
 #else
 	bt_ctf_field_type_set_byte_order(type, BT_CTF_BYTE_ORDER_LITTLE_ENDIAN);

tools/perf/util/genelf.h

···
 #error "unsupported architecture"
 #endif
 
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #define GEN_ELF_ENDIAN	ELFDATA2MSB
 #else
 #define GEN_ELF_ENDIAN	ELFDATA2LSB

tools/perf/util/intel-bts.c

···
 #define INTEL_BTS_ERR_NOINSN  5
 #define INTEL_BTS_ERR_LOST    9
 
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #define le64_to_cpu bswap_64
 #else
 #define le64_to_cpu

tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c

···
 
 	if (branch == INTEL_PT_BR_CONDITIONAL ||
 	    branch == INTEL_PT_BR_UNCONDITIONAL) {
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 		switch (insn->immediate.nbytes) {
 		case 1:
 			intel_pt_insn->rel = insn->immediate.value;

tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c

···
 
 #define BIT63		((uint64_t)1 << 63)
 
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #define le16_to_cpu bswap_16
 #define le32_to_cpu bswap_32
 #define le64_to_cpu bswap_64

tools/perf/util/s390-cpumsf.c

···
 				   struct hws_basic_entry *basicp)
 {
 	struct hws_basic_entry *basic = basicp;
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	struct hws_basic_entry local;
 	unsigned long long word = be64toh(*(unsigned long long *)basicp);
 
···
 				  struct hws_diag_entry *diagp)
 {
 	struct hws_diag_entry *diag = diagp;
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	struct hws_diag_entry local;
 	unsigned long long word = be64toh(*(unsigned long long *)diagp);
 
···
 static bool s390_cpumsf_trailer_show(const char *color, size_t pos,
 				     struct hws_trailer_entry *te)
 {
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	struct hws_trailer_entry local;
 	const unsigned long long flags = be64toh(te->flags);
 
···
 	te = (struct hws_trailer_entry *)(buf + S390_CPUMSF_PAGESZ
 					      - sizeof(*te));
 
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	clock_base = be64toh(te->progusage[0]) >> 63 & 0x1;
 	progusage2 = be64toh(te->progusage[1]);
 #else