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re PR other/85161 (Test case failures in libbacktrace on powerpc64 BE starting with r253456) 

PR other/85161
	* elf.c (elf_zlib_fetch): Fix up predefined macro names in test for
	big endian, only use 32-bit loads if endianity macros are predefined
	and indicate big or little endian.

From-SVN: r259096
This commit is contained in:
Jakub Jelinek 2018-04-04 19:18:14 +02:00 committed by Jakub Jelinek
parent 600583ab73
commit c5c4b2ae6e
2 changed files with 15 additions and 1 deletions
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7
libbacktrace/ChangeLog
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@ -1,3 +1,10 @@
2018-04-04 Jakub Jelinek <jakub@redhat.com>
PR other/85161
* elf.c (elf_zlib_fetch): Fix up predefined macro names in test for
big endian, only use 32-bit loads if endianity macros are predefined
and indicate big or little endian.
2018-02-14 Igor Tsimbalist <igor.v.tsimbalist@intel.com>
PR target/84148

9
libbacktrace/elf.c
View File

@ -1086,12 +1086,19 @@ elf_zlib_fetch (const unsigned char **ppin, const unsigned char *pinend,
return 0;
}
#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) \
&& defined(__ORDER_BIG_ENDIAN__) \
&& (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ \
|| __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
/* We've ensured that PIN is aligned. */
next = *(const uint32_t *)pin;
#if __BYTE_ORDER == __ORDER_BIG_ENDIAN
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
next = __builtin_bswap32 (next);
#endif
#else
next = pin[0] | (pin[1] << 8) | (pin[2] << 16) | (pin[3] << 24);
#endif
val |= (uint64_t)next << bits;
bits += 32;