$NetBSD: README.gcc12,v 1.20 2023/10/22 00:09:20 mrg Exp $ new stuff: libmpx liboffloadmic libvtv libcet libphobos d gfortran libbacktrace: +dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5 c++tools todo: - audit all uses of new warning-disable variables and convert some from -Wno- to -Wno-error= arch/feature list. tools: does build.sh tools work? kernels: does a kernel run? y (yes), b (builds/ready), p (partially), ? (not ready) libgcc: does libgcc build? native-gcc: does a full mknative-gcc complete? sani: has sanitizer been ported to this CPU again for GCC 12? b (build) y (works) make release: does build.sh release complete? (before sanitizer - bs) runs: does the system boot with a full world? atf: does atf run / compare well switched: has port switched? y (yes), n (no/ready), ? (not ready) architecture tools kernels libgcc native-gcc/sani make release runs atf switched ------------ ----- ------- ------ --------------- ------------ ---- --- -------- aarch64 y y y y y[17] y y y ? aarch64eb y y y y y[17] y y y ? alpha y y y y b y y y ? earmv4 y b ? y ? ? ? ? ? earmv4eb y b ? y ? ? ? ? ? earmv5 y y y y b y y y ? earmv5eb y y y y b y y y ? earmv5hf y b ? y ? ? ? ? ? earmv5hfeb y b ? y ? ? ? ? ? earmv6 y b ? y ? ? ? ? ? earmv6eb y b ? y ? ? ? ? ? earmv6hf y y y y b y y y ? earmv6hfeb y y y y b y y y ? earmv7 y b y y ? ? ? ? ? earmv7eb y b ? y ? ? ? ? ? earmv7hf y y y y b y y y ? earmv7hfeb y y y y b y y y ? hppa y y y y ? y ? ? ? i386 y y y y n[18] y y n[19] ? ia64 y b y y y y y[3] n ? m68000 y y y y n[11] n y[14] ? ? m68k y y y y b y y[14] y[14] ? mipseb y b y y b y ? ? ? mipsel y b y y b y ? ? ? mips64eb y b y y b y ? ? ? mips64el y b y y b y ? ? ? powerpc y y y y ? n[4] ? ? ? powerpc64 y ? ? y ? ? ? ? ? sh3eb y ? y y b y ? ? ? sh3el y n[20] y y b y n[22] ? ? sparc y y y y n[21] y y y ? sparc64 y b y y n[16] y y ? ? vax y y y y n[23] n n[24,25] ? ? x86_64 y y y y y[13] y y y ? riscv32 y y y y b y n[2] ? ? riscv64 y y y y b y y y ? ------------ ----- ------- ------ --------------- ------------ ---- --- architecture tools kernels libgcc native-gcc/sani make release runs atf [2]: riscv32 kernels are not really implemented yet, not GCC 12 issue. [3]: GENERIC.SKI boots just as well as GCC 10. [4]: rs6000 has a new generator for rs6000-builtins.cc and rs6000-builtins.h rs6000-vecdefines.h [7]: fails to build kernels: In file included from sys/arch/powerpc/oea/pmap64.c:4: sys/arch/powerpc/oea/pmap.c:2186:2: error: #error PPC_OEA64 not supported [11]: sanitizers don't build yet. [13]: on amd64, with very basic test, lsan, ubsan, and asan work, but tsan crashes at start up: ThreadSanitizer: CHECK failed: tsan_rtl.cpp:149 "((reinterpret_cast(this) % 64)) == ((0))" (0x10, 0x0) (tid=21499) ThreadSanitizer:DEADLYSIGNAL ==21499==ERROR: ThreadSanitizer: SEGV on unknown address 0x000000000017 (pc 0x7f7ff4e5e14e bp 0x7f7fffffdbd0 sp 0x7f7fffffdb40 T21499) ==21499==The signal is caused by a READ memory access. ==21499==Hint: address points to the zero page. ThreadSanitizer:DEADLYSIGNAL ThreadSanitizer: nested bug in the same thread, aborting. [14]: "dd count=1", "env LC_CTYPE=en_US.UTF-8 locale", and "tests/crypto/libcrypto/h_evp_test evpmd_blake.txt" abort. adding -fno-stack-protector to strsuftoll.c, citrus_module.c, and blake2_prov.c, respectively, works around the problem. [16]: sanitizers crash early: Program received signal SIGSEGV, Segmentation fault. (gdb) bt #0 0x000000004064265c in __sanitizer::CheckASLR () at /usr/src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_linux.cpp:2181 #1 0xffffffffffffc704 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) [17]: (NOT A REGRESSION) libtsan is newly introduced, which fails with: FATAL: ThreadSanitizer: unexpected memory mapping 0x200100000-0x200101000 [18]: *san requires 64-bit atomic ops: ld: /usr/lib/libasan.so: undefined reference to `__sync_val_compare_and_swap_8' If lib*san is compiled with -march=i586, all tests in usr.bin/{cc,c++} successfully pass. [19]: kernel freezes with garbage parmanently output to console, after lib/libc/sys/t_ptrace_wait:syscall_signal_on_sce fails: syscall_signal_on_sce: [[ 3013.0266693] sorry pid 1847 was killed: orphanes ss ss ss ... [20]: kernel needs -O1 for ffs32() and ffs_nodealloccg() for multi-user boot. Even if the whole kernel is built with -O1, it panics during ATF: kernel/t_sysv (92/935): 3 test cases msg: [ 3981.4751382] panic: kernel diagnostic assertion "msghdr->msg_spot >= 0" failed: file "../../../../kern/sysv_msg.c", line 426 [21]: asan has v7/v8/atomic issues: ld: /usr/lib/libasan.so: undefined reference to `__sync_val_compare_and_swap_8' nm shows some more: U __sync_add_and_fetch_4 U __sync_fetch_and_add_4 U __sync_lock_test_and_set_4 U __sync_val_compare_and_swap_1 U __sync_val_compare_and_swap_4 liblsan and libubsan are mssing the _4 and _8 versions, too. [22]: single-user shell crashes. if userland is built with DBG=-O1, it boots into multi-user mode. however, at least db(3) is broken, by which files are corrupted when edited by vi(1). [23]: sanitizers fail to build: sanitizer_flag_parser.h:141:72: error: format '%zx' expects argument of type 'size_t', but argument 4 has type 'unsigned int' [-Werror=format=] [24]: (NOT A REGRESSION) c++ exception handling is broken. mechanically applying http://www.execsw.org/netbsd/changeset.cgi?id=20140318T234341Z.c59ac4642e7d4b345f6dc5aa9887e9e1f9aa459a#src/gnu/dist/gcc4/gcc/config/vax/vax.c does not help (with adjustments for gcc 10.5.0, which is broken, too): (gdb) invalid-command [1] Illegal instruction (core dumped) gdb [25]: (maybe not related to [24]) native gcc is broken: simh# cc hello.c during RTL pass: final hello.c: In function 'main': hello.c:9:1: internal compiler error: Segmentation fault CPU vs platform test table (for CPUs with multiple ports). this is "make release" or just kernels. values: y (yes), k (kernels only), n (failed), r (running), ? (not attempted), nx (yes, no x11) CPU platform list --- -------- ---- acorn32 cats epoc32 evbarm-eb evbarm-el hpcarm iyonix netwinder shark zaurus earmv4: k k k k k k k y earm: nx nx k k earmhf: k k earmv6: k k earmv6hf: nx nx earmv7: k k earmv7hf: nx nx amiga atari cesfic hp300 luna68k mac68k mvme68k news68k next68k sun3 x68k m68k: nx k k k k nx k k k nx k evbmips emips ews4800mips mipsco newsmips sgimips mipseb: k k k k k y evbmips algor arc cobalt hpcmips pmax mipsel: k k k k k y algor evbmips pmax mips64eb: y mips64el: k y y amigappc bebox evbppc ibmnws macppc mvmeppc ofppc prep rs6000 sandpoint powerpc: k k k k kn[4] k k k k k evbppc macppc ofppc powerpc64: k k n[7] dreamcast evbsh3 hpcsh landisk mmeye sh3eb: y k sh3el: k y k k