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32364f99e1
Accept either little-endian or big-endian representation of the ELF hints magic number in the header of a hints file and convert the parameters to the native byte-order of the repsective system. This is a pre-requisite for a planned change to always write the byte order in little-endian format on all architectures. The only relvant architecture that uses big-endian data is powerpc64, and it is not likely that new architectures will choose that representation of data in memory. When all supported architectures use little-endian data in the hints file, the byte swap logic can be enabled for big-endian CPUs at compile time. Up to that point, there is a very small run-time penalty that is paid on all systems to check the byte-order of the hints file and to provide the option to byte-swap the parameters read from the hints file header. This commit contains the changes from review D44080 (which had been split off from this patch for easier review), Reviewed by: kib MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D44053 (cherry picked from commit 7b77d37a561b47db093a2528b8032dbfe5791698) rtld-elf: add some debug print statements The byte-order independent code has been reported to fail on powerpc64. Add some more debug statements to help identify the parametrs used and to verify the correct operation of the byte-swap macros used.. (cherry picked from commit 173953182af060dcab43990e179ee91e9f2d1e54) rtld: fix check for endianess of elf hints file Don't check if the elf hints file is in host byte order, but check if it is in little endian by looking at the magic number. This fixes rtld on big endian platforms. Reviewed by: se, kib (prior version of the patch) Fixes: 7b77d37a561b ("rtld-elf: support either byte-order of hints") MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D44472 (cherry picked from commit da2d6e2815d7694e3ccbd561508074c547b02dd6) rtld: reduce debug messages after fix on big-endian hosts Remove a debug message that had been added to support the debugging of a mis-detection of the hint files endianness on powerpc64. MFC after: 3 days (cherry picked from commit c44bf7d2e9d2292867f2e23f291266af26762354) |
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| .. | ||
| aarch64 | ||
| amd64 | ||
| arm | ||
| i386 | ||
| powerpc | ||
| powerpc64 | ||
| riscv | ||
| rtld-libc | ||
| tests | ||
| debug.c | ||
| debug.h | ||
| libmap.c | ||
| libmap.conf | ||
| libmap.h | ||
| Makefile | ||
| Makefile.depend | ||
| map_object.c | ||
| rtld.1 | ||
| rtld.c | ||
| rtld.h | ||
| rtld_lock.c | ||
| rtld_lock.h | ||
| rtld_malloc.c | ||
| rtld_malloc.h | ||
| rtld_paths.h | ||
| rtld_printf.c | ||
| rtld_printf.h | ||
| rtld_tls.h | ||
| rtld_utrace.h | ||
| Symbol.map | ||
| xmalloc.c | ||