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| author |   bluhm <bluhm@openbsd.org> | 2018-07-09 16:20:33 +0000 |
|---|---|---|
| committer | bluhm <bluhm@openbsd.org> | 2018-07-09 16:20:33 +0000 |
| commit | 6d6884da9552eaecc9b650abb69bf999719c27cd (patch) | |
| tree | c949388cb29984483491c3fa7f742019fdbcc866 | |
| parent | Rename the THESETS variable to ALLSETS because it holds the list (diff) | |
| download | wireguard-openbsd-6d6884da9552eaecc9b650abb69bf999719c27cd.tar.xz wireguard-openbsd-6d6884da9552eaecc9b650abb69bf999719c27cd.zip | |
Clear the part of fenv that is modified by old AMD Opteron during
process startup.
from guenther@
| -rw-r--r-- | regress/lib/libm/fenv/fenv.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/regress/lib/libm/fenv/fenv.c b/regress/lib/libm/fenv/fenv.c index 038b2f9ef19..4de4d86fd22 100644 --- a/regress/lib/libm/fenv/fenv.c +++ b/regress/lib/libm/fenv/fenv.c @@ -1,4 +1,4 @@ -/* $OpenBSD: fenv.c,v 1.3 2017/08/07 20:56:46 bluhm Exp $ */ +/* $OpenBSD: fenv.c,v 1.4 2018/07/09 16:20:33 bluhm Exp $ */ /*- * Copyright (c) 2004 David Schultz <das@FreeBSD.org> @@ -41,6 +41,7 @@ #include <stdio.h> #include <string.h> #include <unistd.h> +#include <machine/fpu.h> /* * Implementations are permitted to define additional exception flags @@ -132,6 +133,10 @@ test_dfl_env(void) fenv_t env; fegetenv(&env); +#ifdef __amd64 + /* Some early amd64 CPUs set fip+fdp for non-x87 instructions */ + memset(&env.__x87.__others[0], 0, 14); +#endif /* __amd64 */ assert(memcmp(&env, FE_DFL_ENV, sizeof(env)) == 0); #endif assert(fetestexcept(FE_ALL_EXCEPT) == 0); @@ -424,7 +429,7 @@ test_feholdupdate(void) * We don't want to cause a fatal exception in * the child until the second pass, so we can * check other properties of feupdateenv(). - */ + */ if (pass == 1) assert((feenableexcept(except) & ALL_STD_EXCEPT) == 0); |