GLIBC support for Xtensa

• https://sourceware.org/glibc/wiki/Release/2.26
• https://fossies.org/linux/glibc/math/README.libm-test

Testsuite may be run natively (on linux system running on hardware or in system emulation) or on linux-user emulation. First is very accurate, but slow. Second is fast (10h wall clock for all tests) but not so accurate.

• FAIL: conform/POSIX2008/fcntl.h/linknamespace
• FAIL: conform/POSIX2008/mqueue.h/linknamespace
• FAIL: conform/POSIX2008/sys/stat.h/conform
• FAIL: conform/XOPEN2K8/fcntl.h/linknamespace
• FAIL: conform/XOPEN2K8/mqueue.h/linknamespace
• FAIL: conform/XOPEN2K8/sys/stat.h/conform
• FAIL: conform/XOPEN2K/fcntl.h/linknamespace
• FAIL: conform/XOPEN2K/mqueue.h/linknamespace
• FAIL: debug/backtrace-tst
• FAIL: debug/tst-backtrace2
• FAIL: debug/tst-backtrace3
• FAIL: debug/tst-backtrace4
• FAIL: debug/tst-backtrace5
• FAIL: debug/tst-backtrace6
• FAIL: debug/tst-longjmp_chk2
• FAIL: dlfcn/default
  • output looks good, works if run manually
• FAIL: iconvdata/mtrace-tst-loading
• FAIL: iconvdata/tst-loading
• FAIL: io/bug-ftw2
• FAIL: io/ftwtest
• FAIL: io/test-stat2
• FAIL: io/test-utime
• FAIL: io/tst-fts
• FAIL: localedata/mtrace-tst-leaks
• FAIL: localedata/tst-leaks
• FAIL: malloc/tst-dynarray-fail
• FAIL: malloc/tst-dynarray-fail-mem
• FAIL: malloc/tst-mallocstate
• FAIL: misc/tst-clone3
  • bad test?: futex syscall should have 6 arguments
• FAIL: nptl/tst-backtrace1
• FAIL: nptl/tst-cancel21
  • timeout; works if run manually
• FAIL: nptl/tst-cancel7
• FAIL: nptl/tst-cancelx21
  • timeout; works if run manually
• FAIL: nptl/tst-cancelx7
• FAIL: nptl/tst-stack4
  • Timeout, too many threads
• FAIL: posix/tst-getaddrinfo5
• FAIL: stdio-common/bug22
  • bad test?: expected exit status should be 1
• FAIL: stdlib/tst-strtod-round
• FAIL: string/tst-cmp
• FAIL: wcsmbs/tst-wcstod-round

• FAIL: c++-types-check
• FAIL: conform/POSIX2008/fcntl.h/linknamespace
• FAIL: conform/POSIX2008/mqueue.h/linknamespace
• FAIL: conform/POSIX2008/sys/stat.h/conform
• FAIL: conform/XOPEN2K/fcntl.h/linknamespace
• FAIL: conform/XOPEN2K/mqueue.h/linknamespace
• FAIL: conform/XOPEN2K8/fcntl.h/linknamespace
• FAIL: conform/XOPEN2K8/mqueue.h/linknamespace
• FAIL: conform/XOPEN2K8/sys/stat.h/conform
• FAIL: debug/tst-chk1
• FAIL: debug/tst-chk2
• FAIL: debug/tst-chk3
• FAIL: debug/tst-chk4
• FAIL: debug/tst-chk5
• FAIL: debug/tst-chk6
• FAIL: debug/tst-lfschk1
• FAIL: debug/tst-lfschk2
• FAIL: debug/tst-lfschk3
• FAIL: debug/tst-lfschk4
• FAIL: debug/tst-lfschk5
• FAIL: debug/tst-lfschk6
• FAIL: debug/tst-longjmp_chk2
• FAIL: dlfcn/default
• FAIL: elf/check-abi-libc
• FAIL: elf/check-execstack
• FAIL: elf/check-localplt
• FAIL: elf/tst-_dl_addr_inside_object
• FAIL: elf/tst-audit1
• FAIL: elf/tst-audit11
• FAIL: elf/tst-audit12
• FAIL: elf/tst-audit2
• FAIL: elf/tst-audit8
• FAIL: elf/tst-audit9
• UNSUPPORTED: elf/tst-env-setuid
• UNSUPPORTED: elf/tst-env-setuid-tunables
• FAIL: elf/tst-pie2
• FAIL: elf/tst-prelink-cmp
• XPASS: elf/tst-protected1a
• XPASS: elf/tst-protected1b
• FAIL: elf/tst-ptrguard1
• FAIL: elf/tst-ptrguard1-static
• FAIL: elf/tst-stackguard1
• FAIL: elf/tst-stackguard1-static
• FAIL: elf/tst-unused-dep
• FAIL: elf/tst-unused-dep-cmp
• FAIL: elf/vismain
• FAIL: inet/test_ifindex
• [- openat (“/dev/shm”, O_TMPFILE | O_RDWR): Permission denied] FAIL: io/tst-open-tmpfile
• FAIL: malloc/tst-dynarray-at-fail
• FAIL: malloc/tst-dynarray-fail
• FAIL: malloc/tst-malloc-thread-fail
• FAIL: malloc/tst-malloc-usable-tunables
• FAIL: malloc/tst-mallocstate
• FAIL: math/test-double-finite-fma
• FAIL: math/test-double-fma
• UNSUPPORTED: math/test-fesetexcept-traps
• FAIL: math/test-float-finite-fma
• FAIL: math/test-float-fma
• FAIL: math/test-idouble-fma
• FAIL: math/test-ifloat-fma
• UNSUPPORTED: math/test-nearbyint-except
• UNSUPPORTED: math/test-nearbyint-except-2
• FAIL: math/test-tgmath
• FAIL: math/test-tgmath2
• [- QEMU bug: mincore] FAIL: misc/test-errno-linux
• FAIL: misc/tst-clone2
• FAIL: misc/tst-clone3
• FAIL: nptl/test-cond-printers
• FAIL: nptl/test-condattr-printers
• FAIL: nptl/test-mutex-printers
• FAIL: nptl/test-mutexattr-printers
• FAIL: nptl/test-rwlock-printers
• FAIL: nptl/test-rwlockattr-printers
• FAIL: nptl/tst-align-clone
• [+- QEMU feature: FUTEX_UNLOCK_PI] FAIL: nptl/tst-cond-except
• FAIL: nptl/tst-cond24
• FAIL: nptl/tst-cond25
• FAIL: nptl/tst-create-detached
• [- QEMU feature: no vfork] FAIL: nptl/tst-exec1
• [- QEMU feature: no vfork] FAIL: nptl/tst-exec5
• FAIL: nptl/tst-getpid1
• FAIL: nptl/tst-robust-fork
• [- QEMU feature] FAIL: nptl/tst-robust1
• [- QEMU feature] FAIL: nptl/tst-robust2
• [- QEMU feature] FAIL: nptl/tst-robust3
• [- QEMU feature] FAIL: nptl/tst-robust4
• [- QEMU feature] FAIL: nptl/tst-robust5
• [- QEMU feature] FAIL: nptl/tst-robust6
• [- QEMU feature] FAIL: nptl/tst-robust7
• [- QEMU feature] FAIL: nptl/tst-robust8
• [- QEMU feature] FAIL: nptl/tst-robust9
• FAIL: nptl/tst-setuid3
• FAIL: nptl/tst-spin2
• FAIL: nptl/tst-stackguard1
• FAIL: nptl/tst-stackguard1-static
• [- QEMU feature: do_getsockopt] FAIL: posix/test-errno
• FAIL: posix/tst-getaddrinfo5
• FAIL: posix/tst-posix_spawn-setsid
• FAIL: posix/tst-spawn
• FAIL: posix/tst-spawn-static
• FAIL: posix/tst-spawn2
• FAIL: posix/tst-spawn3
• UNSUPPORTED: posix/tst-sysconf-empty-chroot
• UNSUPPORTED: resolv/tst-resolv-res_init
• UNSUPPORTED: resolv/tst-resolv-res_init-thread
• UNSUPPORTED: resolv/tst-resolv-threads
• [- QEMU feature: mq_notify] FAIL: rt/tst-mqueue3
• [- QEMU feature: mq_notify] FAIL: rt/tst-mqueue5
• [- QEMU feature: mq_notify] FAIL: rt/tst-mqueue6
• FAIL: stdio-common/bug22
• FAIL: stdio-common/test-vfprintf
• FAIL: stdio-common/tst-vfprintf-width-prec
• FAIL: string/tst-cmp
• UNSUPPORTED: sunrpc/tst-svc_register
• FAIL: sunrpc/tst-udp-error
• [- Cannot allocate memory] FAIL: timezone/tst-tzset