Changes in softfloat-specialize

Changes in softfloat-specialize http://nxr.netbsd.org/rss/src/lib/libc/softfloat/softfloat-specialize en Copyright 2005 Java Fix logic pertaining to NaN for floatx80. The previous was wrong in that low and high were mixed up. The only exisiting consumer on floatx80 types and softfloat is m68k. /src/lib/libc/softfloat/softfloat-specialize - 1.14 Wed Sep 17 11:42:17 UTC 2025 nat Shift the high word of floatx80 accordingly on m68k. This is because gcc will store floatx80 as signbit(1)exponent(15) padding(32) as opposed to sign and exponent in a short(16 bit) word. /src/lib/libc/softfloat/softfloat-specialize - 1.13 Wed Sep 17 11:37:38 UTC 2025 nat Switch over m68k soffloat build to libc/softfloat. m68k would previously use softfloat functions contained in libgcc_s. This change aligns m68k with other platforms built with softfloat. It is still possible to build the gcc_s softfloat impementation by setting MKSOFFTFLOAT=yes MKLIBCSOFTFLOAT=no Addresses PR/59393. /src/lib/libc/softfloat/softfloat-specialize - 1.12 Wed Sep 10 23:07:39 UTC 2025 nat libc: Sprinkle #ifdef _REENTRANT around thr_sigsetmask. Workaround -- temporary, I hope -- for: PR lib/59401: libc: thr_sigsetmask definition is incoherent /src/lib/libc/softfloat/softfloat-specialize - 1.11 Tue May 06 23:18:27 UTC 2025 riastradh libc softfloat: Make SIGFPE for trapped fp exceptions non-ignorable. In hardfloat, when the kernel delivers SIGFPE for a floating-point exception trap, if SIGFPE is masked or ignored, it is handled _as if_ SIGFPE were unmasked and had the default signal disposition: 964 /* 965 * If the signal is masked or ignored, then unmask it and 966 * reset it to the default action so that the process or 967 * its tracer will be notified. 968 */ 969 const bool ignored = action == SIG_IGN; 970 if (masked || ignored) { 971 mutex_enter(&ps->sa_mutex); 972 sigdelset(mask, signo); 973 sigdelset(&p->p_sigctx.ps_sigcatch, signo); 974 sigdelset(&p->p_sigctx.ps_sigignore, signo); 975 sigdelset(&SIGACTION_PS(ps, signo).sa_mask, signo); 976 SIGACTION_PS(ps, signo).sa_handler = SIG_DFL; 977 mutex_exit(&ps->sa_mutex); 978 } https://nxr.netbsd.org/xref/src/sys/kern/kern_sig.c?r=1.410#964 In other words, if you have asked for floating-point exception traps via fpsetmask(3) or feeenableexcept(3), then you can't simply defer or ignore them at the signal level any more than you can defer or ignore SIGBUS or SIGSEGV. And if the signal handler returns, it will restart the instruction and -- if nothing has changed in the set of trapped floating-point exceptions -- trap again, delivering the same signal again. Since we can't lock access to signal dispositions, I don't think we can guarantee the same effect from userland atomically, but we can get a close approximation (should be good enough for single-threaded programs, at least) by mimicking this logic and calling sigqueueinfo in a loop. PR misc/56820: Many FPE related tests fail on softfloat machines /src/lib/libc/softfloat/softfloat-specialize - 1.10 Sun Apr 27 15:23:27 UTC 2025 riastradh branches: 1.9.36; Changes to existing files to enable building AARCH64 userland. evbarm64-el This is clang only. While gcc4.8 supports aarch64, no netbsd support has been written for aarch64 with gcc4.8. /src/lib/libc/softfloat/softfloat-specialize - 1.9 Sun Aug 10 05:57:31 UTC 2014 matt Add hooks to softfloat to support per-lwp exception state. /src/lib/libc/softfloat/softfloat-specialize - 1.8 Thu Jan 10 08:16:10 UTC 2013 matt branches: 1.7.2; cast to appropriate types. /src/lib/libc/softfloat/softfloat-specialize - 1.7 Wed Mar 21 02:32:26 UTC 2012 christos branches: 1.6.4; Apply local namespace protection equivalent to the weak alias done in softfloat-for-gcc.h, which we can't include here, to move "float_exception_mask" into implementation namespace. /src/lib/libc/softfloat/softfloat-specialize - 1.6 Sun Mar 06 10:27:37 UTC 2011 martin Use sigqueueinfo() instead of raise() to generate exceptions. Provide minimalistic siginfo data. /src/lib/libc/softfloat/softfloat-specialize - 1.5 Fri Mar 04 11:48:58 UTC 2011 martin branches: 1.4.46; Add support to build the mac68k port with soft-float enabled (i.e., setting MKSOFTFLOAT=yes). The main purpose of this feature is to let NetBSD work in machines with the 68040LC chip (those that have the FPU bug). All the work has been done by Bruce O'Neel <edoneel AT sdf.lonestar.org>, with some very minor changes by me; the patches were being posted to the port-mac68k mailing list. It has been tested for a long time by several users, including me. I have just verified that regular releases, as well as soft-float ones, continue to build. There have been no objections to this patch since I asked for them in July in the port-mac68k list. /src/lib/libc/softfloat/softfloat-specialize - 1.4 Sun Sep 26 21:13:27 UTC 2004 jmmv Add SIGFPE support to SoftFloat, so fpsetmask/fpgetmask now work. A new variable, float_exception_mask (#defined to _softfloat_float_exception_mask) contains the current exception mask. Also make the argument to float_raise into an fp_except. Also synchronise file header comments between files. /src/lib/libc/softfloat/softfloat-specialize - 1.3 Sun May 12 13:12:45 UTC 2002 bjh21 branches: 1.2.2; After the grand unification of softfloat-specialize, let sparc64 builds work properly again. /src/lib/libc/softfloat/softfloat-specialize - 1.2 Tue Apr 23 11:59:25 UTC 2002 agc All the versions of softfloat-specialize were practically identical, so replace them with a single one. /src/lib/libc/softfloat/softfloat-specialize - 1.1 Sun Apr 21 21:07:35 UTC 2002 bjh21 Catch up to -current. /src/lib/libc/softfloat/softfloat-specialize - 1.2.2.3 Fri Jun 21 18:18:19 UTC 2002 nathanw Catch up to -current. /src/lib/libc/softfloat/softfloat-specialize - 1.2.2.2 Thu Apr 25 04:01:45 UTC 2002 nathanw file softfloat-specialize was added on branch nathanw_sa on 2002-04-25 04:01:45 +0000 /src/lib/libc/softfloat/softfloat-specialize - 1.2.2.1 Tue Apr 23 11:59:25 UTC 2002 nathanw Sync with HEAD /src/lib/libc/softfloat/softfloat-specialize - 1.4.46.1 Sat Mar 05 15:09:20 UTC 2011 bouyer sync with head /src/lib/libc/softfloat/softfloat-specialize - 1.6.4.2 Wed Jan 23 00:05:23 UTC 2013 yamt sync with head /src/lib/libc/softfloat/softfloat-specialize - 1.6.4.1 Tue Apr 17 00:05:23 UTC 2012 yamt