1$NetBSD: README.gcc12,v 1.25 2024/06/29 23:25:55 mrg Exp $ 2 3 4new stuff: 5 libmpx 6 liboffloadmic 7 libvtv 8 libcet 9 libphobos 10 d 11 gfortran 12 libbacktrace: +dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5 13 c++tools 14 15todo: 16 - audit all uses of new warning-disable variables and 17 convert some from -Wno- to -Wno-error= 18 19arch/feature list. 20 21tools: does build.sh tools work? 22kernels: does a kernel run? y (yes), b (builds/ready), p (partially), ? (not ready) 23libgcc: does libgcc build? 24native-gcc: does a full mknative-gcc complete? 25sani: has sanitizer been ported to this CPU again for GCC 12? b (build) y (works) 26make release: does build.sh release complete? (before sanitizer - bs) 27runs: does the system boot with a full world? 28atf: does atf run / compare well 29switched: has port switched? y (yes), n (no/ready), ? (not ready) 30 31 32architecture tools kernels libgcc native-gcc/sani make release runs atf switched 33------------ ----- ------- ------ --------------- ------------ ---- --- -------- 34aarch64 y y y y y[17] y y y y 35aarch64eb y y y y y[17] y y y y 36alpha y y y y b y y y y 37earmv4 y b ? y ? ? ? ? y 38earmv4eb y b ? y ? ? ? ? y 39earmv5 y y y y b y y y y 40earmv5eb y y y y b y y y y 41earmv5hf y b ? y ? ? ? ? y 42earmv5hfeb y b ? y ? ? ? ? y 43earmv6 y b ? y ? ? ? ? y 44earmv6eb y b ? y ? ? ? ? y 45earmv6hf y y y y b y y y y 46earmv6hfeb y y y y b y y y y 47earmv7 y b y y ? ? ? ? y 48earmv7eb y b ? y ? ? ? ? y 49earmv7hf y y y y b y y y y 50earmv7hfeb y y y y b y y y y 51hppa y y y y ? y y y y 52i386 y y y y y[18] y y n[19] y 53ia64 y b y y y y y[3] n y 54m68000 y y y y b n y[14] ? ? 55m68k y y y y b y y[14] y[14] ? 56mipseb y b y y b y y y y 57mipsel y b y y b y y ? y 58mips64eb y b y y b y y y y 59mips64el y b y y b y y ? y 60powerpc y y y y y y y y y 61powerpc64 y ? ? y b b ? ? y 62sh3eb y ? y y b y ? ? ? 63sh3el y n[20] y y b y n[22] ? ? 64sparc y y y y n[21] y y y y 65sparc64 y b y y n[16] y y ? y 66vax y y y y n[23] n n[24,25] ? ? 67x86_64 y y y y y[13] y y y y 68riscv32 y y y y b y n[2] ? y 69riscv64 y y y y b y y y y 70------------ ----- ------- ------ --------------- ------------ ---- --- 71architecture tools kernels libgcc native-gcc/sani make release runs atf 72 73[2]: riscv32 kernels are not really implemented yet, not GCC 12 issue. 74[3]: GENERIC.SKI boots just as well as GCC 10. 75[13]: on amd64, with very basic test, lsan, ubsan, and asan work, but tsan crashes at start up: 76 ThreadSanitizer: CHECK failed: tsan_rtl.cpp:149 "((reinterpret_cast<uptr>(this) % 64)) == ((0))" (0x10, 0x0) (tid=21499) 77 ThreadSanitizer:DEADLYSIGNAL 78 ==21499==ERROR: ThreadSanitizer: SEGV on unknown address 0x000000000017 (pc 0x7f7ff4e5e14e bp 0x7f7fffffdbd0 sp 0x7f7fffffdb40 T21499) 79 ==21499==The signal is caused by a READ memory access. 80 ==21499==Hint: address points to the zero page. 81 ThreadSanitizer:DEADLYSIGNAL 82 ThreadSanitizer: nested bug in the same thread, aborting. 83[14]: "dd count=1", "env LC_CTYPE=en_US.UTF-8 locale", and "tests/crypto/libcrypto/h_evp_test evpmd_blake.txt" abort. 84 adding -fno-stack-protector to strsuftoll.c, citrus_module.c, and blake2_prov.c, respectively, works around the problem. 85 -- workarounds commited. 86[16]: sanitizers crash early: 87 Program received signal SIGSEGV, Segmentation fault. 88 (gdb) bt 89 #0 0x000000004064265c in __sanitizer::CheckASLR () at /usr/src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_linux.cpp:2181 90 #1 0xffffffffffffc704 in ?? () 91 Backtrace stopped: previous frame identical to this frame (corrupt stack?) 92 -- some wip patches make this less bad 93[17]: (NOT A REGRESSION) libtsan is newly introduced, which fails with: 94 FATAL: ThreadSanitizer: unexpected memory mapping 0x200100000-0x200101000 95[18]: lib*san is compiled with -march=i586 to ensure required atomic ops are present 96[19]: kernel freezes with garbage parmanently output to console, after lib/libc/sys/t_ptrace_wait:syscall_signal_on_sce fails: 97 syscall_signal_on_sce: [[ 3013.0266693] sorry pid 1847 was killed: orphanes 98 ss 99 ss 100 ss 101 ... 102[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: 103 kernel/t_sysv (92/935): 3 test cases 104 msg: [ 3981.4751382] panic: kernel diagnostic assertion "msghdr->msg_spot >= 0" failed: file "../../../../kern/sysv_msg.c", line 426 105[21]: asan has v7/v8/atomic issues: 106 ld: /usr/lib/libasan.so: undefined reference to `__sync_val_compare_and_swap_8' 107 nm shows some more: 108 U __sync_add_and_fetch_4 109 U __sync_fetch_and_add_4 110 U __sync_lock_test_and_set_4 111 U __sync_val_compare_and_swap_1 112 U __sync_val_compare_and_swap_4 113 liblsan and libubsan are mssing the _4 and _8 versions, too. 114 -- they're not really supported (not my atf) in gcc 10 currently. 115[22]: single-user shell crashes. if userland is built with DBG=-O1, it boots into multi-user mode. 116 however, at least db(3) is broken, by which files are corrupted when edited by vi(1). 117[23]: sanitizers fail to build: 118 sanitizer_flag_parser.h:141:72: error: format '%zx' expects argument of type 'size_t', but argument 4 has type 'unsigned int' [-Werror=format=] 119[24]: (NOT A REGRESSION) c++ exception handling is broken. mechanically applying 120 http://www.execsw.org/netbsd/changeset.cgi?id=20140318T234341Z.c59ac4642e7d4b345f6dc5aa9887e9e1f9aa459a#src/gnu/dist/gcc4/gcc/config/vax/vax.c 121 does not help (with adjustments for gcc 10.5.0, which is broken, too): 122 (gdb) invalid-command 123 [1] Illegal instruction (core dumped) gdb 124[25]: (maybe not related to [24]) native gcc is broken: 125 simh# cc hello.c 126 during RTL pass: final 127 hello.c: In function 'main': 128 hello.c:9:1: internal compiler error: Segmentation fault 129 130 131CPU vs platform test table (for CPUs with multiple ports). this is "make release" or just kernels. 132values: y (yes), k (kernels only), n (failed), r (running), ? (not attempted), nx (yes, no x11), nk (no kernels available) 133 134CPU platform list 135--- -------- ---- 136 acorn32 cats epoc32 evbarm-eb evbarm-el hpcarm iyonix netwinder shark zaurus 137earmv4: k k k k k k k y 138earm: nx nx k k 139earmhf: k k 140earmv6: k k 141earmv6hf: nx nx 142earmv7: k k 143earmv7hf: nx nx 144 145 amiga atari cesfic hp300 luna68k mac68k mvme68k news68k next68k sun3 x68k 146m68k: nx k k k k nx k k k nx k 147 148 evbmips emips ews4800mips mipsco newsmips sgimips 149mipseb: k k k k k y 150 151 evbmips algor arc cobalt hpcmips pmax 152mipsel: k k k k k y 153 154 algor evbmips pmax 155mips64eb: y 156mips64el: k y y 157 158 amigappc bebox evbppc ibmnws macppc mvmeppc ofppc prep rs6000 sandpoint 159powerpc: k k k k y k k k k k 160 161 evbppc macppc ofppc 162powerpc64: nk nk nk 163 164 dreamcast evbsh3 hpcsh landisk mmeye 165sh3eb: y k 166sh3el: k y k k 167